CN111757403A

CN111757403A - Resource allocation method and communication device

Info

Publication number: CN111757403A
Application number: CN201910252621.1A
Authority: CN
Inventors: 李翔宇; 彭文杰; 王君; 戴明增
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-09
Anticipated expiration: 2039-03-29
Also published as: WO2020200135A1; CN111757403B

Abstract

A resource allocation method and a communication device can be applied to the Internet of vehicles, such as V2X, LTE-V, V2V and the like. The method comprises the following steps: the first network device receives a first message which is sent by a second network device and used for a handover request, the first network device sends a second message which responds to the handover request to the second network device, the second message comprises information which is used for indicating whether the terminal device continues to use a first transmission resource and/or a first transmission resource pool after being handed over to a target cell, the first transmission resource and the first transmission resource pool are used for supporting side chain data transmission of the terminal device, the first transmission resource is a transmission resource which is scheduled for the terminal device in a source cell, and the first transmission resource pool is a transmission resource pool configured in the source cell. The first network equipment can decide whether the terminal equipment continues to use the first transmission resource and/or the first transmission resource pool after the cell switching, so that the service continuity of the terminal equipment during the cell switching can be improved.

Description

Resource allocation method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a resource allocation method and a communications apparatus.

Background

With the development of communication technology, the third Generation partnership project (3rd Generation partnership project, 3GPP) proposes a vehicle to all (V2X) technology based on a cellular network. V2X is a new generation information communication technology capable of connecting a vehicle with everything, and has various application scenarios such as vehicle-to-vehicle communication (V2V), vehicle-to-person communication (V2P), vehicle-to-road facility communication (V2I), vehicle-to-network communication (V2N) and the like shown in fig. 1, so as to help the vehicle to better realize an Automatic Driving (ADS) function.

In the V2X system, when a terminal device in a Radio Resource Control (RRC) connected state performs cell handover, a special resource pool of a target cell may be included in a handover command and transmitted to the terminal device. The terminal equipment can randomly select resources from a special resource pool for side-chain data transmission in the period from receiving the switching command to completing the switching or before selecting the sending resources through a sensing process. However, because the QoS requirement of the V2X type service is high, the special resource pool configured in the handover command at present cannot support the service continuity well, and cannot meet the application scenario of group communication.

Disclosure of Invention

The embodiment of the application provides a resource allocation method and a communication device, which are used for solving the technical problem that service continuity of terminal equipment is poor when cell switching is carried out in the prior art.

In a first aspect, an embodiment of the present application provides a resource configuration method, where the method is applied to a first network device, where the first network device may be a target network device, and a second network device appearing in the method may be a source network device. The method comprises the following steps: a first network device receives a first message sent by a second network device, where the first message is used for a handover request, the first message includes information used for indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, the first transmission resource and the first transmission resource pool are respectively used for supporting side-chain data transmission of a terminal device, the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a Radio Resource Control (RRC) connected state; and the first network equipment sends a second message for responding to the switching request to the second network equipment, wherein the second message comprises information for indicating whether the terminal equipment continues to use the first transmission resource and/or the first transmission resource pool after being switched to the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can decide whether to continue to use the first transmission resource and/or the first transmission resource pool configured in the source cell after the terminal device is switched to the target cell, so that the service continuity of the terminal device during cell switching can be ensured.

With reference to the first aspect, in a first possible design of the first aspect, when the first network device determines that the terminal device uses the first transmission resource and/or the first transmission resource pool after being handed over to the target cell, the second message includes first indication information, where the first indication information is used to indicate that the terminal device uses the first transmission resource and/or the first transmission resource pool after being handed over to the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can indicate that the terminal device is allowed to use the information of the first transmission resource and/or the first transmission resource pool configured in the source cell after being switched to the target cell by responding to the switching request sent by the second network device, so that the terminal device can use the same transmission resource or transmission resource pool to transmit data before and after cell switching, and the influence of different resources configured in different cells on the service continuity of communication is avoided.

With reference to the first aspect, in a second possible design of the first aspect, in a case that the first network device does not use the first transmission resource and/or the first transmission resource pool after deciding that the terminal device is handed over to the target cell, the second message may include second indication information, where the second indication information is used to indicate a second transmission resource and/or a second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool are respectively used to support side-chain data transmission of the terminal device, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can indicate the information of the second transmission resource and/or the second transmission resource pool which is reconfigured for the terminal device and can be used after the terminal device is switched to the target cell in a mode of responding to the switching request sent by the second network device, so that the service continuity of the terminal device during cell switching can be ensured.

With reference to the first aspect or any one of the possible designs of the first aspect, in a third possible design of the first aspect, the first transmission resource and/or the first transmission resource pool is obtained by the second network device from a measurement report message sent by the terminal device; or the first transmission resource and/or the first transmission resource pool are determined by the second network device according to the identifier of the terminal device.

By adopting the technical scheme in the embodiment of the application, the information of the first transmission resource and/or the first transmission resource pool configured in the source cell can be actively reported by the terminal equipment, and can also be determined by the second network equipment, such as the source network equipment, according to the identifier of the terminal equipment.

With reference to the first aspect or any one of the possible designs of the first aspect, in a fourth possible design of the first aspect, the first transmission resource and the second transmission resource are transmission resources that need to be activated or deactivated by a DCI indication when configured, or transmission resources that need not be activated or deactivated by a DCI indication when configured; the first transmission resource pool and the second transmission resource pool comprise a sending resource pool and a receiving resource pool.

By adopting the technical scheme in the embodiment of the application, the first transmission resource and the second transmission resource may be configured scheduled grant for the network device, for example, configured granted grant type1 that does not need DCI to indicate activation or deactivation, or configured grant type2 that needs DCI to indicate activation or deactivation; the first transmission resource pool and the second transmission resource pool can be resource pools configured for network devices, and comprise two parts, namely a sending resource pool and a receiving resource pool.

In a second aspect, an embodiment of the present application provides a resource configuration method, where the method is applied to a second network device, where the second network device may be a source network device, and a first network device present in the method may be a target network device. The method comprises the following steps: the second network equipment sends a first message to the first network equipment, the first message is used for switching request, the first message comprises information used for indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, the first transmission resource and the first transmission resource pool are respectively used for supporting side chain data transmission of the terminal equipment, the first transmission resource is a transmission resource scheduled for the terminal equipment in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal equipment is in a Radio Resource Control (RRC) connection state; and the second network equipment receives a second message which is sent by the first network equipment and used for responding to the switching request, wherein the second message comprises information used for indicating whether the terminal equipment continues to use the first transmission resource and/or the first transmission resource pool after being switched to the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can decide whether to continue to use the first transmission resource and/or the first transmission resource pool configured in the source cell after the terminal device is switched to the target cell, and the second transmission resource and/or the first transmission resource pool are/is sent to the second network device through the second message responding to the switching request, so that the service continuity of the terminal device during cell switching is ensured.

With reference to the second aspect, in a first possible design of the second aspect, in a case that the first network device decides to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the second message includes first indication information, where the first indication information is used to indicate that the terminal device uses the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can indicate that the terminal device is allowed to use the first transmission resource and/or the first transmission resource pool configured in the source cell after being switched to the target cell by responding to the switching request sent by the second network device, so that the terminal device can use the same transmission resource or transmission resource pool to transmit data before and after cell switching, and the influence of different resources configured in different cells on the service continuity of communication is avoided.

With reference to the second aspect, in a second possible design of the second aspect, in a case that the first network device determines not to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the handover response message includes second indication information, the second indication information is used to indicate a second transmission resource and/or a second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool are respectively used to support side-chain data transmission of the terminal device after the handover is completed, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can indicate the second transmission resource and/or the second transmission resource pool which is reconfigured for the terminal device and is used after the terminal device is switched to the target cell in a mode of responding to the switching request sent by the second network device, so that the service continuity of the terminal device during cell switching can be ensured.

With reference to the second aspect, or any one of the possible designs of the second aspect, in a third possible design of the second aspect, before the second network device sends the first message to the first network device, the method further includes: receiving a measurement report message sent by terminal equipment, and acquiring a first transmission resource and/or a first transmission resource pool according to the measurement report message; or, the method further includes the second network device determining the first transmission resource and/or the first transmission resource pool according to the identifier of the terminal device.

With reference to the second aspect or any one of the possible designs of the second aspect, in a fourth possible design of the second aspect, the first transmission resource and the second transmission resource are transmission resources that need to be activated or deactivated by a DCI indication during configuration, or transmission resources that need not be activated or deactivated by a DCI indication during configuration; the first transmission resource pool and the second transmission resource pool comprise a sending resource pool and a receiving resource pool.

In a third aspect, an embodiment of the present application provides a communication apparatus, which may have a function of implementing the first network device in the first aspect or any one of the possible designs of the first aspect. The communication device may be the first network device, or may be a device included in the first network device, such as a chip. The functions of the first network device may be implemented by hardware, or may be implemented by hardware executing corresponding software, where the hardware or software includes one or more modules corresponding to the functions.

In one possible design, the communication apparatus includes a processing module and a transceiver module in a structure, where the processing module is configured to support the communication apparatus to perform the corresponding functions in the first aspect or any design of the first aspect. The transceiver module is configured to support communication between the communication apparatus and other communication devices, for example, receive a first message sent by a second network device, or send a second message used for responding to a handover request to the second network device. The communication device may also include a memory module, coupled to the processing module, that stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, the storage module may be a memory, and the memory may be integrated with the processor or disposed separately from the processor, which is not limited in this application.

In another possible design, the communication device may be configured to include a processor and a memory, and the processor is coupled to the memory and configured to execute computer program instructions stored in the memory to enable the communication device to perform the method of the first aspect or any one of the possible designs of the first aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. When the communication device is a first network device, the communication interface may be a transceiver or an input/output interface; when the communication means is a chip included in the first network device, the communication interface may be an input/output interface of the chip. Alternatively, the transceiver may be a transmit-receive circuit and the input/output interface may be an input/output circuit.

Alternatively, the communication device may have the functionality of the second network apparatus in any of the possible designs implementing the second aspect or the second aspect described above. The communication device may be the second network device, or may be a device included in the second network device, such as a chip. The functions of the second network device may be implemented by hardware, or may be implemented by hardware executing corresponding software, where the hardware or software includes one or more modules corresponding to the functions.

In one possible design, the communication device includes a processing module and a transceiver module in a structure, wherein the processing module is configured to support the communication device to perform the corresponding functions in the second aspect or any design of the second aspect. The transceiver module is configured to support communication between the communication apparatus and other communication devices, for example, send a first message to the first network device, or receive a second message sent by the first network device and used for responding to the handover request. The communication device may also include a memory module, coupled to the processing module, that stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, the storage module may be a memory, and the memory may be integrated with the processor or disposed separately from the processor, which is not limited in this application.

In another possible design, the communication device may be configured to include a processor and a memory, and the processor is coupled to the memory and configured to execute computer program instructions stored in the memory to enable the communication device to perform the method of the second aspect or any one of the possible designs of the second aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. When the communication device is a second network device, the communication interface may be a transceiver or an input/output interface; when the communication means is a chip included in the second network device, the communication interface may be an input/output interface of the chip. Alternatively, the transceiver may be a transmit-receive circuit and the input/output interface may be an input/output circuit.

In a fourth aspect, an embodiment of the present application provides a chip system, including: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the system-on-chip to implement the method in any one of the possible designs of the first aspect described above or the method in any one of the possible designs of the second aspect described above.

Optionally, the system on a chip may have one or more processors. The processor may be implemented by hardware or by software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

Optionally, the memory in the system-on-chip may also be one or more. The memory may be integrated with the processor or may be separate from the processor, which is not limited in this application. For example, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated with the processor on the same chip or separately disposed on different chips, and the type of the memory and the arrangement of the memory and the processor are not particularly limited in this application.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium, which stores computer-readable instructions, and when the computer-readable instructions are read and executed by a computer, the computer-readable instructions cause the computer to perform the method in any one of the possible designs of the first aspect or to implement the method in any one of the possible designs of the second aspect.

In a sixth aspect, embodiments of the present application provide a computer program product, which when read and executed by a computer, causes the computer to perform the method in any one of the possible designs of the first aspect or the second aspect.

In a seventh aspect, an embodiment of the present application provides another resource allocation method, where the method is applicable to a terminal device. The method comprises the following steps: the terminal equipment acquires a condition meeting the triggering connection, wherein the condition comprises one or more of the following items: when the system broadcast message does not comprise a transmission resource pool corresponding to the service interest frequency point and uses the transmission resource in the transmission resource pool corresponding to the service interest frequency point to transmit data, the channel state information is worse than or equal to a first threshold value, or the channel congestion degree is greater than or equal to a second threshold value, the transmission resource pool configured for the current service interest frequency point does not meet the requirement of the quality of service (QoS) of a new service, and the service transmission mode changes; and the terminal equipment sends a third message to the network equipment, wherein the third message is used for establishing or recovering the Radio Resource Control (RRC) connection.

By adopting the technical scheme provided by the embodiment of the application, the triggering connection condition is set in consideration of various factors such as the channel quality of the existing service transmission, the QoS requirement of a new service, the service transmission mode and the like, the QoS requirement of the service transmission on a sidelink can be better ensured, and the condition that the terminal equipment cannot enter the RRC connection state due to too single connection establishment condition is avoided.

With reference to the seventh aspect, in a first possible design of the seventh aspect, a transmission resource pool configured for a frequency point of interest of a current service does not meet a QoS requirement of a new service, and the method includes: the transmission delay required by the new service is less than or equal to a third threshold value; or the reliability required by the new service is greater than or equal to a fourth threshold value; or the transmission rate required by the new service is greater than or equal to a fifth threshold; or the communication distance required by the new service is greater than a sixth threshold; or one or more QoS parameters corresponding to the new service exceed the seventh threshold range or are not in the range of the configuration list; the service transmission mode changes, including: one or more of a transmission cycle of the service, data amount information of the service transmission, time information of the service transmission, and frequency information of the service transmission are changed. It can be seen that, when the condition for triggering connection relates to determining whether the transmission resource pool corresponding to the frequency point of interest of the service can meet the QoS requirement of the new service, and determining whether the service transmission mode changes, the determination modes are multiple and the flexibility is good.

With reference to the seventh aspect or to the first possible design of the seventh aspect, in a second possible design of the seventh aspect, for any one or more parameters including the first to seventh thresholds and the configuration list, the method further includes: the terminal equipment receives an RRC message sent by the network equipment, wherein the RRC message comprises the any one or more parameters; or, the terminal device receives a system broadcast message sent by the network device, where the system broadcast message includes the any one or more parameters; or the terminal device acquires the one or more parameters pre-configured in the terminal device.

By adopting the technical scheme provided by the embodiment of the application, any one or more parameters related in the connection triggering conditions can be configured through multiple possible implementation modes, so that the condition that the parameter configuration mode is single and the terminal equipment initiates RRC connection establishment or RRC connection recovery is prevented from being influenced, and the applicability of the resource configuration method is effectively improved. When a certain configuration mode is unavailable, the network equipment can also select other modes to configure parameters in the conditions, and meanwhile, the network equipment can conveniently update the conditions for triggering the connection in time according to the change of the environment.

With reference to the second possible design of the seventh aspect, in a third possible design of the seventh aspect, the method further includes: the terminal equipment determines the value of any one or more parameters according to the received RRC message; if the terminal equipment does not receive the RRC message, the value of any one or more parameters is determined according to the received system broadcast message; if the terminal equipment does not receive the RRC message and does not receive the system broadcast message, any one or more pre-configured parameters are acquired.

By adopting the technical scheme provided by the embodiment of the application, the terminal equipment may receive one, two or even 0 RRC message or system broadcast message for configuring any one or more parameters, and set priorities for various implementation modes of parameter configuration, so that the rule for setting the connection triggering condition is ensured to be ordered.

In an eighth aspect, an embodiment of the present application provides another resource allocation method, where the method is applicable to a terminal device. The method comprises the following steps: the terminal equipment enters a Radio Resource Control (RRC) idle state or an RRC non-activated state, or leaves the coverage range of the network equipment; the terminal device reserves a third transmission resource and/or a third transmission resource pool configured in the source cell, wherein the third transmission resource and the third transmission resource pool are respectively used for supporting side-chain data transmission of the terminal device, the third transmission resource is a transmission resource scheduled for the terminal device in the source cell, and the third transmission resource pool is a transmission resource pool configured in the source cell.

By adopting the technical scheme in the embodiment of the application, when the terminal device enters the RRC idle state or the RRC inactive state, the transmission resource and/or the transmission resource pool originally configured by the second network device can be reserved, so that the service continuity can be better supported, the QoS requirement of data transmission on the sidelink can be met, and the situation that the data transmission on the sidelink is influenced by directly releasing the resource configured by the second network device when the terminal device performs RRC state conversion can be avoided. Since the terminal device cannot listen to the system broadcast message sent by the network device after leaving the coverage area of the network device, when the terminal device leaves the coverage area of the network device, the transmission resource and/or the transmission resource pool originally configured by the second network device in the coverage area of the network device is reserved, and the service continuity of the terminal device on the sidelink can be effectively supported.

With reference to the eighth aspect, in a first possible design of the eighth aspect, in a case that the terminal device leaves the coverage of the network device, for example, after the terminal device leaves the coverage of the network device, the method further includes: and the terminal equipment releases the third transmission resource and/or the third transmission resource pool through the effective duration corresponding to the third transmission resource and/or the third transmission resource pool respectively.

By adopting the technical scheme in the embodiment of the application, the corresponding effective duration is respectively set for the third transmission resource and/or the third transmission resource pool reserved after the terminal equipment leaves the coverage area of the network equipment, so that the resource utilization rate of the system can be effectively improved.

With reference to the first possible design of the eighth aspect, in a second possible design of the eighth aspect, in a case that the terminal device leaves the coverage of the network device, for example, before the terminal device leaves the coverage of the network device, the method further includes: the terminal equipment receives an RRC message sent by first network equipment, wherein the RRC message comprises the effective duration; or, the terminal device receives a system broadcast message sent by the first network device, where the system broadcast message includes the valid duration; or the terminal device obtains the effective duration pre-configured in the terminal device.

By adopting the technical scheme in the embodiment of the application, the terminal equipment can acquire the effective duration which is allocated and set by the network equipment for the third transmission resource and/or the third transmission resource pool through multiple possible implementation modes, so that the problems that the setting mode of the effective duration is too single, and the reserved transmission resource and/or the transmission resource pool is not released after the terminal equipment leaves the coverage range of the network equipment, are solved, and the resource utilization rate of the system is effectively improved.

With reference to the second possible design of the eighth aspect, in a third possible design of the eighth aspect, the method further includes: the terminal equipment determines the effective duration according to the received RRC message; if the terminal equipment does not receive the RRC message, determining the effective duration according to the received system broadcast message; and if the terminal equipment does not receive the RRC message and the system broadcast message, acquiring the preset effective duration.

In this way, since the terminal device may receive one, two, or even 0 RRC message and system broadcast message for configuring the effective duration, and set priorities for various implementation manners of the effective duration configuration, it may be ensured that the effective duration of the third transmission resource and/or the third transmission resource pool can be successfully set, so that after the terminal device leaves the coverage area of the network device, the part of resources may be released through the corresponding effective duration, thereby improving the resource utilization rate of the system.

With reference to the eighth aspect, in a fourth possible design of the eighth aspect, in a situation where the terminal device enters the RRC idle state or the RRC inactive state, for example, after the terminal device enters the RRC idle state or the RRC inactive state, the method further includes: the terminal device sends a fourth message to the first network device, wherein the fourth message is used for RRC connection establishment or RRC connection recovery, and the fourth message comprises information used for indicating a third transmission resource and/or a third transmission resource pool; and the terminal equipment receives a fifth message sent by the first network equipment, wherein the fifth message comprises information used for indicating whether the terminal equipment continues to use the third transmission resource and/or the third transmission resource pool after accessing the target cell.

By adopting the technical scheme in the embodiment of the application, the terminal device can carry the currently reserved transmission resource and/or transmission resource pool, and send the fourth message for RRC connection establishment or RRC connection recovery to the first network device, so that the first network device can decide whether to continue to use the currently reserved transmission resource and/or transmission resource pool, thereby effectively ensuring the service continuity of the terminal device.

With reference to the fourth possible design of the eighth aspect, in a fifth possible design of the eighth aspect, in a case that the first network device determines that the terminal device uses the third transmission resource and/or the third transmission resource pool after accessing the target cell, the fifth message includes third indication information, where the third indication information is used to indicate that the terminal device uses the third transmission resource and/or the third transmission resource pool after accessing the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can indicate that the terminal device is allowed to use the third transmission resource and/or the third transmission resource pool configured in the source cell after being switched to the target cell by sending the fifth message, so that the terminal device can use the same transmission resource or transmission resource pool to transmit data before and after cell switching, and the influence on the service continuity of group communication caused by different resources configured in different cells is avoided.

With reference to the fourth possible design of the eighth aspect, in a sixth possible design of the eighth aspect, in a case that the first network device does not use the third transmission resource and/or the third transmission resource pool after deciding that the terminal device accesses the target cell, the fifth message includes fourth indication information, the fourth indication information is used to indicate a fourth transmission resource and/or a fourth transmission resource pool reconfigured in the target cell, the fourth transmission resource and the fourth transmission resource pool are respectively used to support side-chain data transmission of the terminal device, the fourth transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the fourth transmission resource pool is a transmission resource pool configured in the target cell.

By adopting the technical scheme in the embodiment of the application, the first network device can indicate the second transmission resource and/or the second transmission resource pool which is reconfigured for the terminal device and can be used after the terminal device is switched to the target cell by sending the fifth message, so that the service continuity of the terminal device during cell switching can be ensured.

With reference to the fourth to sixth possible designs of the eighth aspect, in a seventh possible design of the eighth aspect, in a case that the terminal device enters the RRC idle state or the RRC inactive state, for example, before the terminal device enters the RRC idle state or the RRC inactive state, the method further includes: and the terminal equipment receives a sixth message sent by the second network equipment, wherein the sixth message is used for RRC connection suspension or RRC connection release, the sixth message comprises information used for indicating a first area, the first area is an area which allows the terminal equipment to continue to use a third transmission resource and/or a third transmission resource pool when cell reselection occurs, and the first area comprises at least one cell.

By adopting the technical scheme in the embodiment of the application, the mobility of the terminal equipment in an RRC idle state or an RRC non-activated state can be effectively supported by setting the first region for the terminal equipment. In this way, the terminal device moves in the first cell, and the third transmission resource and/or the third transmission resource pool can be continuously used when the cell reselection occurs, without the need for the network device to perform resource reconfiguration again.

With reference to the seventh possible design of the eighth aspect, in an eighth possible design of the eighth aspect, before the terminal device sends the fourth message, the method further includes: the terminal device leaves the first area and is in an RRC idle state or an RRC inactive state before sending the fourth message.

By adopting the technical scheme in the embodiment of the application, if the network device indicates the first area in the sixth message for RRC connection suspension or RRC connection release, the terminal device may send the fourth message for RRC connection establishment when leaving the first area, and request the network device to perform resource configuration. The network device may allow the terminal device to continue to use the reserved transmission resource or transmission resource pool, or may reconfigure the available transmission resource or transmission resource pool for the terminal device.

With reference to the seventh possible design of the eighth aspect, in a ninth possible design of the eighth aspect, before the terminal device sends the fourth message, the method further includes: and the terminal equipment acquires the condition meeting the triggering connection, and is in an RRC idle state or an RRC non-activated state before the fourth message is sent.

By adopting the technical scheme in the embodiment of the application, when the terminal equipment can acquire the satisfied condition for triggering the connection, the terminal equipment sends the fourth message for establishing the RRC connection to enter the RRC connection state and request the network equipment to perform explicit resource configuration, so that the service continuity of the terminal equipment is better supported, and the side chain transmission efficiency is improved.

With reference to the ninth possible design of the eighth aspect, in a tenth possible design of the eighth aspect, the condition for triggering connection may be satisfied by one or more of: when the transmission resources in the third transmission resource pool are used for transmitting data, the channel state information is worse than or equal to a first threshold value, or the channel congestion degree is larger than or equal to a second threshold value; the third transmission resource pool does not meet the QoS requirement of the new service; the traffic transmission mode changes.

By adopting the technical scheme in the embodiment of the application, the condition of triggering the connection can consider various factors such as the channel quality of the existing service transmission, the QoS requirement of the new service, the service transmission mode and the like, so that the QoS requirement of the service transmission on the side chain can be better ensured, and the condition that the terminal equipment cannot enter the RRC connection state due to the single connection establishment condition is avoided.

With reference to the tenth possible design of the eighth aspect, in an eleventh possible design of the eighth aspect, the third pool of transmission resources does not meet the QoS requirement of the new service, and the method includes: the transmission delay required by the new service is less than or equal to a third threshold value; or the reliability required by the new service is greater than or equal to a fourth threshold value; or the transmission rate required by the new service is greater than or equal to a fifth threshold; or the communication distance required by the new service is greater than a sixth threshold; or one or more QoS parameters corresponding to the new service exceed the seventh threshold range or are not in the range of the configuration list; the service transmission mode changes, including: one or more of a transmission cycle of the service, data amount information of the service transmission, time information of the service transmission, and frequency information of the service transmission are changed. It can be seen that, when the condition for triggering connection relates to determining whether the transmission resource pool corresponding to the frequency point of interest of the service can meet the QoS requirement of the new service, and determining whether the service transmission mode changes, the determination modes are multiple and the flexibility is good.

With reference to the tenth or eleventh possible design of the eighth aspect, in a twelfth possible design of the eighth aspect, the method further includes, for any one or more parameters including the first to seventh thresholds and the configuration list: the terminal equipment receives an RRC message sent by the first network equipment, wherein the RRC message comprises the any one or more parameters; or, the terminal device receives a system broadcast message sent by the first network device, where the system broadcast message includes the any one or more parameters; or the terminal device acquires the one or more parameters pre-configured in the terminal device. Optionally, the terminal device may receive the RRC message or the system broadcast message or acquire the pre-configuration before acquiring the trigger connection.

By adopting the technical scheme in the embodiment of the application, any parameter related to the connection triggering condition can be set in various ways, so that the connection triggering condition is more flexible, and the requirement of the terminal equipment for entering the RRC connection state is met.

With reference to the twelfth possible design of the eighth aspect, in a thirteenth possible design of the eighth aspect, the method further includes: the terminal equipment determines the value of any one or more parameters according to the received RRC message; if the terminal equipment does not receive the RRC message, the value of any one or more parameters is determined according to the received system broadcast message; and if the terminal equipment does not receive the RRC message and does not receive the system broadcast message, acquiring the any one or more pre-configured parameters.

With reference to any one of the possible designs of the eighth aspect, in a fourteenth possible design of the eighth aspect, the third transmission resource and the fourth transmission resource are transmission resources that need to be activated or deactivated by a DCI indication when configured, or transmission resources that need not be activated or deactivated by a DCI indication when configured; the third transmission resource pool and the fourth transmission resource pool comprise a sending resource pool and a receiving resource pool.

In a ninth aspect, an embodiment of the present application provides another communication apparatus, where the communication apparatus has a function of implementing a terminal device in any one of the possible designs of the seventh aspect or the seventh aspect, or has a function of implementing a terminal device in any one of the possible designs of the eighth aspect or the eighth aspect. The communication device may be a terminal device, such as a vehicle-mounted terminal device or a vehicle-mounted communication device, a device included in the terminal device, such as a chip, or a device including the terminal device, such as various types of vehicles. The functions of the terminal device may be implemented by hardware, or may be implemented by hardware executing corresponding software, where the hardware or software includes one or more modules corresponding to the functions.

In one possible design, the structure of the communication device includes a processing module and a transceiver module, where the processing module is configured to support the communication device to perform the corresponding function in any one of the designs of the seventh aspect or the seventh aspect, or to perform the corresponding function in any one of the designs of the eighth aspect or the eighth aspect. The transceiver module is configured to support communication between the communication apparatus and other communication devices, for example, send a third message for RRC connection establishment or RRC connection recovery to the network device. The communication device may also include a memory module, coupled to the processing module, that stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, the storage module may be a memory, and the memory may be integrated with the processor or disposed separately from the processor, which is not limited in this application.

In another possible design, the communication device may be configured to include a processor and a memory, where the processor is coupled to the memory and is operable to execute computer program instructions stored in the memory to cause the communication device to perform the method in any one of the possible designs of the seventh aspect or the seventh aspect, or to perform the method in any one of the possible designs of the eighth aspect or the eighth aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. When the communication device is a terminal device, the communication interface may be a transceiver or an input/output interface; when the communication device is a chip included in a short-medium device, the communication interface may be an input/output interface of the chip. Alternatively, the transceiver may be a transmit-receive circuit and the input/output interface may be an input/output circuit.

In a tenth aspect, an embodiment of the present application provides a chip system, including: a processor coupled to a memory, the memory storing a program or instructions that, when executed by the processor, cause the system-on-chip to implement the method in any one of the possible designs of the seventh aspect described above or to implement the method in any one of the possible designs of the eighth aspect described above.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium having computer-readable instructions stored thereon, which, when read and executed by a computer, cause the computer to perform the method in any one of the possible designs of the seventh aspect described above, or perform the method in any one of the possible designs of the eighth aspect described above.

In a twelfth aspect, embodiments of the present application provide a computer program product, which when read and executed by a computer, causes the computer to perform the method in any one of the possible designs of the seventh aspect described above or the method in any one of the possible designs of the eighth aspect described above.

In a thirteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes one or more of the terminal device, the first network device, and the second network device described in the foregoing aspects.

Drawings

FIG. 1 is a schematic diagram of an application scenario of the V2X technology;

fig. 2 is a schematic network architecture of a communication system according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a transition relationship between RRC connected states according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a resource allocation method according to an embodiment of the present application;

fig. 5 is a schematic flowchart of another resource allocation method according to an embodiment of the present application;

fig. 6a is a schematic diagram illustrating an application of a condition for triggering a connection according to an embodiment of the present application;

fig. 6b is a schematic diagram illustrating an application of another trigger connection condition according to an embodiment of the present application;

fig. 7 is a schematic flowchart of another resource allocation method according to an embodiment of the present application;

fig. 8 is an expanded flow diagram of another resource allocation method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 12 is another schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide interoperability for microwave access (world wide) systems, max) communication systems, fifth generation (5G) systems or new NR systems, or other similar communication systems for future use in or future communication systems.

In addition, the technical solution provided in the embodiment of the present application may be applied to a cellular link, and may also be applied to a link between devices, for example, a device to device (D2D) link. The D2D link or the V2X link may also be referred to as a Sidelink (SL), a sidelink, a side link, a secondary link, or the like. In the embodiments of the present application, the above terms all refer to links established between devices of the same type, and have the same meaning. The devices of the same type may be links from the terminal device to the terminal device, links from the base station to the base station, links from the relay node to the relay node, and the like, which are not limited in this embodiment of the present application. For the link between the terminal device and the terminal device, there is a D2D link defined by release (Rel) -12/13 of 3GPP, and also a V2X link defined by 3GPP for the internet of vehicles, vehicle-to-vehicle, vehicle-to-cell, or vehicle-to-any entity, including Rel-14/15. But also the Rel-16 and subsequent releases of NR system based V2X link currently under investigation by 3 GPP.

Referring to fig. 2, a network architecture of a communication system applicable to the embodiment of the present application is shown, where the communication system includes a network device 210, a terminal device 220, and a terminal device 230. Further, an application server 240 is also included in the communication system.

The network architecture includes two communication interfaces: a PC5 interface and a Uu interface. The PC5 interface is a direct connection communication interface between the terminal device and the terminal device, and the direct connection communication link between the terminal device and the terminal device is a sidelink for communication between the terminal device and the terminal device. The sidelink-based communication may use at least one of the following channels: a physical sidelink shared channel (psch) for carrying data (data); a physical side chain control channel (PSCCH) is used to carry side chain control information (SCI), which is also called Scheduling Assignment (SA).

The Uu interface is a communication interface between the terminal device and the network device, and a communication link between the terminal device and the network device includes an Uplink (UL) and a Downlink (DL). The Uu interface-based communication may be that the sender terminal device sends data to the network device through the Uu interface, sends the data to the application server through the network device for processing, and then sends the processed data to the network device through the application server, and sends the data to the receiver terminal device through the network device. It should be noted that, in a communication mode based on the Uu interface, the network device that forwards the uplink data from the sender terminal device to the application server and the network device that forwards the downlink data sent by the application server to the receiver terminal device may be the same network device or different network devices, and may be specifically determined by the application server.

The network device in fig. 2 may be an access network device, such as a base station. Wherein the access network equipment corresponds to different equipment on different systems, e.g. on the fourth generation mobile communication technology (the 4)^thgeneration, 4G) system may correspond to an eNB, and in a 5G system corresponds to an access network device in 5G, for example, a gNB. Although only the terminal device 220 and the terminal device 230 are shown in fig. 2, it should be understood that the network device may provide services for a plurality of terminal devices, and the number of terminal devices in the communication system is not limited in the embodiment of the present application. Similarly, the terminal device in fig. 2 is described by taking a vehicle-mounted terminal device or a vehicle as an example, and it should be understood that the terminal device in the embodiment of the present application is not limited thereto.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) A terminal device, which may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. The terminal device may communicate with a core network via a Radio Access Network (RAN), and exchange voice and/or data with the RAN. For example, the terminal device may be a handheld device, a vehicle-mounted device, or the like having a wireless connection function. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote management), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

2) The network device is a device in the network for accessing the terminal device to the wireless network. The network device may be a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). The network device may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolved Node B) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation node B (gNB) in a fifth generation mobile communication technology (5G) New Radio (NR) system, or may also include a Transmission Reception Point (TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a WiFi Access Point (AP), and the like, or may further include a Centralized Unit (CU) and a Distributed Unit (DU) in a cloud access network (cloudsran) system, which is not limited in the embodiment of the present application. As another example, one type of network device in V2X technology is a Road Side Unit (RSU), which may be a fixed infrastructure entity supporting V2X applications and may exchange messages with other entities supporting V2X applications.

3) The resource allocation pattern is also called a resource allocation pattern. One terminal device may use one or two resource configuration modes. The first resource allocation Mode is that the resource of the terminal device for data transmission on the sidelink at a time is allocated by the network device in a scheduling manner, for example, the resource allocation Mode 3 defined in the LTE V2X system and the resource allocation Mode 1 defined in the NR V2X system. In this transmission mode, the situation that adjacent terminal devices are allocated the same resource does not occur, and better transmission reliability can be ensured.

The second resource allocation Mode is that the resource for the terminal device to perform data transmission on the sidelink every time is dynamically selected by the terminal device from a configured resource pool, for example, a resource allocation Mode 4 defined in the LTE V2X system and a resource allocation Mode 2 defined in the NRV2X system. The resource pool may be configured by the network device through a system broadcast message or an RRC message. When the terminal equipment transmits data, the data can be transmitted by autonomously acquiring at least part of resources from the resource pool through random selection, on the basis of an interception reservation mechanism or on the basis of a partial interception reservation mechanism. Since the terminal device autonomously selects the resource, a situation that different terminal devices select the same resource to transmit data may occur, and transmission collision may occur.

4) RRC CONNECTED state, the terminal device may have three RRC CONNECTED states, RRC CONNECTED state (RRC _ CONNECTED), RRC IDLE state (RRC _ IDLE), and RRC INACTIVE state (RRC _ INACTIVE). As shown in fig. 3, the RRC connected state, the RRC idle state, and the RRC inactive state can be switched to each other, but the RRC idle state and the RRC inactive state can only be switched from the RRC inactive state to the RRC idle state. The terminal device in the RRC connected state may use the first resource configuration mode or the second resource configuration mode, or may even use both resource configuration modes at the same time, and which resource configuration mode is specifically used is determined by the network device.

In addition, the terminal devices may be classified into in-coverage (IC) terminal devices and out-of-coverage (OOC) terminal devices according to whether the terminal devices are located within the coverage of the network device. Only the terminal devices within the coverage of the network device have various RRC connection states, and the terminal devices outside the coverage of the network device cannot directly interact with the network device.

5) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "at least one" is to be understood as meaning one or more, for example one, two or more. For example, the inclusion of at least one means that one, two or more are included, and does not limit which is included. For example, at least one of A, B and C is included, then inclusion can be A, B, C, A and B, A and C, B and C, or A and B and C. Similarly, the understanding of the description of "at least one" and the like is similar. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not define the order, sequence, priority, or importance of the plurality of objects, and the description of first "and" second "does not define that the objects are necessarily different.

Referring to fig. 4, a resource allocation method according to an embodiment of the present application is applicable to a scenario in which a terminal device in an RRC connected state performs cell handover. The method includes steps S401 to S403 as follows:

step S401, the first network device receives a first message sent by the second network device, where the first message is used for a handover request, and the first message includes information used for indicating a first transmission resource and/or a first transmission resource pool configured in the source cell.

In this embodiment, the first network device may be a target network device, the target network device is a network device that the terminal device accesses after performing cell handover, the target cell is a cell that the terminal device accesses after performing cell handover, and the target cell may be a cell under the target network device. Correspondingly, the second network device may be a source network device, the source network device is a network device accessed by the terminal device before handover, and the source cell is a cell accessed by the terminal device before cell handover. The first message sent by the second network device may also be referred to as a handover request message.

The first transmission resource and/or the first transmission resource pool are/is respectively used for supporting side chain data transmission of the terminal device, wherein the side chain data transmission refers to data transmission between the terminal device and other terminal devices on a side uplink. The first transmission resource is a transmission resource scheduled by the second network device for the terminal device in the source cell, and may be a transmission resource dedicated to the terminal device, and corresponds to the first resource configuration mode; the first transmission resource pool is a transmission resource pool configured for the terminal device by the second network device in the source cell, can be used under the condition that no network scheduling resource exists, and corresponds to the second resource configuration mode. It should be understood that the second network device may configure the first transmission resource only for the terminal device in the source cell, or may configure the first transmission resource pool only for the terminal device in the source cell, or may configure both the first transmission resource and the first transmission resource pool for the terminal device in the source cell, which is not limited in this application. Furthermore, when the second network device configures the first transmission resource and the first transmission resource pool for the terminal device in the source cell, the terminal device may use only the first transmission resource, may use only the resource in the first transmission resource pool, may use both the first transmission resource and the resource in the first transmission resource pool, and is not limited in the same way.

The first transmission resource may be a transmission resource that requires DCI indication activation or deactivation at the time of configuration, or a transmission resource that does not require DCI indication activation or deactivation at the time of configuration. In one possible design, the first transmission resource may be a configured grant indicating a time and frequency range available for traffic transmission to the terminal device, and may be configured by the second network device through an RRC message based on a per cell and a per bandwidth part (BWP). configurable grant includes two types, configurable grant type1 and configurable grant type 2. The configuredprint type1 does not require DCI carried on PDCCH to indicate activation and deactivation when configured, and can be used directly once configured. configured grant type2 requires DCI carried on a PDCCH to indicate activation and deactivation during configuration, and after configuration, it is required to determine whether to enable according to the indication of activation and deactivation in the DCI. The first transmission resource pool is a set of a segment of time-frequency resources, and may include a transmission resource pool and a reception resource pool. In one possible design, the first transmission resource pool may be a resource pool configured for the second network device.

It should be noted that, before the second network device sends the first message for the handover request to the first network device, the second network device may receive the measurement report message sent by the terminal device. In one possible design, the measurement report message includes information indicating the first transmission resource and/or the first transmission resource pool. Therefore, the second network device may determine the first transmission resource and/or the first transmission resource pool according to the measurement report message sent by the terminal device. In another possible design, the measurement report message may not include information indicating the first transmission resource and/or the first transmission resource pool, and the second network device may determine the first transmission resource and/or the first transmission resource pool according to the identifier of the terminal device. Illustratively, the second network device stores information, records, or corresponding relationships of transmission resources and/or transmission resource pools configured for each terminal device in the source cell, and when a first message needs to be sent to the first network device, searches in the stored corresponding relationships according to the identifier of the terminal device, and determines the corresponding first transmission resource and/or first transmission resource pool.

In one possible design, the second network device may send the first message to the first network device through an Xn interface with the first network device, which is not limited in this embodiment of the present application.

Step S402, the first network device sends a second message for responding to the switching request to the second network device, wherein the second message comprises information for indicating whether the terminal device continues to use the first transmission resource and/or the first transmission resource pool after being switched to the target cell.

In this embodiment of the present application, the second message sent by the first network device for responding to the handover request may also be referred to as a handover response message or a handover request response message.

When the first network device determines that the terminal device uses the first transmission resource and/or the first transmission resource pool after being handed over to the target cell, the second message sent by the first network device may include first indication information, where the first indication information is used to indicate that the terminal device uses the first transmission resource and/or the first transmission resource pool after being handed over to the target cell. In a case that the first network device does not use the first transmission resource and/or the first transmission resource pool after deciding that the terminal device is handed over to the target cell, the second message sent by the first network device may include second indication information, where the second indication information is used to indicate the second transmission resource and/or the second transmission resource pool that the first network device reconfigures for the terminal device in the target cell.

The second transmission resource and/or the second transmission resource pool are/is used for supporting the side chain data transmission of the terminal equipment. The second transmission resource is a transmission resource scheduled by the first network device for the terminal device in the target cell, and may be a transmission resource dedicated to the terminal device corresponding to the first resource configuration mode; the second transmission resource pool is a transmission resource pool configured by the first network device for the terminal device in the target cell, and can be used in the case that no network scheduling resource exists, and corresponds to the second resource configuration mode. It should be understood that the first network device may configure the second transmission resource only for the terminal device in the target cell, or may configure the second transmission resource pool only for the terminal device in the target cell, or may configure both the second transmission resource and the second transmission resource pool for the terminal device in the target cell, which is not limited in this application. Similarly, in the case that the second transmission resource and the second transmission resource pool are configured simultaneously, the terminal device may use the second transmission resource alone, may also use the resource in the second transmission resource pool simultaneously, and is also not limited.

Similar to the first transmission resource, the second transmission resource may be a transmission resource that requires DCI indication activation or deactivation at the time of configuration, or a transmission resource that does not require DCI indication activation or deactivation at the time of configuration. In one possible design, the second transmission resource may be a configured grant indicating a time and frequency range available for traffic transmission for the terminal device, and may be configured by the first network device through an RRC message based on per cell and per BWP. The configured grant comprises two types, namely a configured grant type1 and a configured grant type2, the configured grant type1 does not require the DCI carried on the PDCCH to indicate activation or deactivation during configuration, and the configured grant type2 requires the DCI carried on the PDCCH to indicate activation or deactivation during configuration. Similar to the first transmission resource pool, the second transmission resource pool is a set of a segment of time-frequency resources, and may include a transmission resource pool and a reception resource pool. In one possible design, the second pool of transmission resources may be resource pools configured for the first network device.

In a possible design, the first network device may send the second message to the second network device through an Xn interface between the first network device and the second network device, which is not limited in this embodiment of the present application.

Step S403, the second network device receives a second message used by the first network device to respond to the handover request.

After step S403, the second network device may send the first indication information or the second indication information sent by the first network device to the terminal device. In one possible design, the second network device may send a message, such as a handover message, to the terminal device, where the message is used to instruct cell handover, and the first indication information or the second indication information is carried in the message.

In this way, the first network device decides whether the first transmission resource and/or the first transmission resource pool configured in the source cell can be continuously used in the target cell, and configures a new transmission resource and/or a new transmission resource pool for the terminal device when the first transmission resource and/or the first transmission resource pool are unavailable, so that the service continuity of the terminal device when cell handover occurs can be effectively ensured.

For example, in a group communication application scenario such as a fleet of vehicles, a fleet of vehicles may be geographically large, and terminal devices in the same fleet of vehicles may be under coverage of multiple cells. By adopting the scheme provided by the embodiment of the application, when the terminal equipment in the fleet is switched from one cell to another cell, the same transmission resource or transmission resource pool can be used by the source cell and the target cell under the decision of the first network equipment, or the transmission resource or transmission resource pool which can be used by the terminal equipment after accessing the target cell can be configured before the terminal equipment is switched, so that the influence on the service continuity of group communication caused by different resources configured in different cells is avoided.

Referring to fig. 5, another resource allocation method provided in the embodiment of the present application includes the following steps S501 to S502:

step S501: the terminal device obtains a condition satisfying the trigger connection, where the condition may be specifically expressed as one or more of the following:

and in the condition 1, when data are transmitted by using transmission resources in a transmission resource pool corresponding to the service interested frequency point, the channel state information is worse than or equal to a first threshold or the channel congestion degree is greater than or equal to a second threshold.

In the embodiment of the application, when the system broadcast message includes a transmission resource pool corresponding to the service interested frequency point, the terminal device may use a resource in the transmission resource pool to transmit data. At this time, if condition 1 is satisfied, it indicates that the channel quality on the current sidelink is poor, and the sidelink data transmission of the existing service may not be guaranteed. The reason may be that terminal devices using similar transmission resources are close in distance and interfere with each other seriously, or the number of terminal devices in the same area is large, and a transmission resource pool configured in a system broadcast message cannot support service transmission of the terminal devices, so that the terminal devices are required to request RRC connection establishment or RRC connection recovery.

The service interest frequency point refers to a frequency point where data of a service or a service type which is interested in the terminal equipment is transmitted, and the terminal equipment can indicate the service interest frequency point in the side chain UE information reported by the network equipment. For example, the terminal device may send sidelink UE information, SL-V2X-commtxresource req-r14 information element IE in the sidelink UE information may include one or more carriers, where each carrier corresponds to a destination identifier ID list for indicating which frequency points the terminal device has the service of interest on for transmission.

And 2, the transmission resource pool configured for the frequency point of interest of the current service does not meet or can not support the QoS requirement of the new service.

In the embodiment of the present application, the transmission resource pool configured for the frequency point of interest of the current service does not meet or cannot support the QoS requirement of the new service, and may include: the transmission delay (latency) required by the new service is smaller than or equal to a third threshold, the reliability (reliability) required by the new service is larger than or equal to a fourth threshold, the transmission rate (datarate) required by the new service is larger than or equal to a fifth threshold, the communication distance (minimum required communication range) required by the new service is larger than or equal to a sixth threshold, and one or more QoS parameters corresponding to the new service exceed the range of a seventh threshold or are not in the range of the configuration list. The one or more QoS parameters may include one or more of a fifth generation communication system QoS indicator (PC 55G QoS identifier, PQI) of PC5, a QoS indicator (V2X QoS identifier, VQI) based on V2X communication, a fifth generation communication system QoS indicator (5G QoS identifier, 5QI), a QoS Flow identifier (QoS Flow ID, QFI), a Guaranteed Flow Bit Rate (GFBR), a Maximum Flow Bit Rate (MFBR), and the like.

The reason for the non-satisfaction may be that the new service requires higher QoS parameters. For example, the QoS parameters may be lower transmission delay, higher reliability, higher transmission rate, larger communication distance, etc., which cannot be implemented on resources selected based on a transmission resource pool configured in the system broadcast message, and the network device is required to configure more appropriate transmission resources to meet the requirements of the new service.

Condition 3, traffic pattern (traffic pattern) changes.

In the embodiment of the present application, the service transmission mode includes various types of information, such as a transmission period (periodicity) of a service, data volume information of service transmission, time information of service transmission, and frequency information of service transmission. The service transmission period is used to indicate an estimated time interval of arrival of the service data on the logical channel, and may include, for example, various values such as 20ms, 50ms, 100ms, 200ms, and even 1000ms, which is not limited specifically; the data volume information transmitted by the service may be the size or data length of a Transport Block (TB) configured for the service, for example, the data volume information may be messagesize information; the time information of the traffic transmission is used to indicate the time position of the traffic transmission, and may be, for example, timing offset information.

The change of the traffic transmission mode may include: one or more of a transmission period (periodicity) of the service, data amount information of the service transmission, time information of the service transmission, and frequency information of the service transmission are changed. Due to the change of the service transmission mode, the transmission resource pool configured in the system broadcast message may no longer meet or be suitable for the service transmission requirement. Therefore, the terminal device is required to request RRC connection establishment or RRC connection recovery, so that the network device configures dedicated transmission resources. Illustratively, the change of the traffic transmission mode may be that the transmission period of the traffic is changed from 100ms to 50ms or 20ms, etc.

And 4, the system broadcast message does not comprise a transmission resource pool corresponding to the service interested frequency point. In one possible design, the transmission resource pool may be a transmission resource pool.

Step S502: and the terminal equipment sends a third message to the network equipment, wherein the third message is used for establishing or recovering the Radio Resource Control (RRC) connection.

In one possible design, the terminal device may send the third message to the network device when the above condition is satisfied. If the terminal device is currently in an RRC idle state, the third message may be used for RRC connection establishment, and at this time, the third message may also be referred to as an RRC connection establishment message; if the terminal device is currently in the RRC inactive state, the third message may be used for RRC connection recovery, and at this time, the third message may also be referred to as an RRC connection recovery message.

Illustratively, as shown in fig. 6a, the terminal device listens for a system broadcast message, for example, a System Information Block (SIB) message, under the coverage of the network device. If the system broadcast message contains configuration information of a transmission resource pool corresponding to the service interested frequency point, the terminal equipment can select resources from the transmission resource pool to perform service transmission on the sidelink based on a second resource configuration mode; otherwise, the terminal device may send a third message to the network device requesting RRC connection establishment or RRC connection recovery to enter an RRC connected state, with the network device explicitly configuring the dedicated transmission resource.

For another example, as shown in fig. 6b, the terminal device performs data transmission on the sidelink according to the reserved transmission resource pool or the transmission resource pool configured in the system broadcast message. If one or more of the above conditions 1, 2, and 3 are satisfied, the terminal device may send a third message requesting RRC connection establishment or RRC connection recovery. The condition 1 indicates that the existing service transmission on the sidelink cannot be guaranteed due to poor channel/link quality and heavy load, the condition 2 indicates that the QoS requirement of the new service of the terminal device is high and exceeds the range that can be supported by the resources in the currently configured transmission resource pool, and the condition 3 indicates that the service transmission mode is changed.

It should be noted that, for any one or more parameters including the first threshold to the seventh threshold and the configuration list involved in the above conditions, before the terminal device determines whether the condition for triggering connection is satisfied, the terminal device may receive an RRC message sent by the network device, where the RRC message includes the any one or more parameters; and/or the terminal device may also receive a system broadcast message sent by the network device, where the system broadcast message includes the any one or more parameters; and/or the terminal device may further obtain the any one or more parameters pre-configured in the terminal device. In this way, any one or more parameters related to the connection triggering condition can be configured through multiple possible implementation manners, so that the situation that the terminal equipment initiates RRC connection establishment or RRC connection recovery due to a single parameter configuration manner can be avoided, and the applicability of the resource configuration method is effectively improved. When a certain configuration mode is not available, the network equipment can also select other modes to configure the parameters in the conditions. Meanwhile, the network equipment can update the connection triggering condition in time according to the change of environment or requirement.

Furthermore, the terminal device may set priorities for various implementations for parameter configuration (which may be understood as a configuration manner or a source of the parameters). For example, the priority may be that the priority of the RRC message is greater than the priority of the system broadcast message, which is greater than the priority of the preconfigured parameters. In this way, the terminal device may use, according to the set priority, a value configured in a manner that the priority is the highest as a final value of the one or more parameters. For example, if the terminal device receives an RRC message for configuring the one or more parameters, the terminal device may determine values of the one or more parameters according to the RRC message; if the RRC message for configuring the one or more parameters is not received but the system broadcast message for configuring the one or more parameters is received, the value of the one or more parameters may be determined according to the system broadcast message; if the RRC message for configuring the one or more parameters is not received, and the system broadcast message for configuring the one or more parameters is not received, the one or more parameters pre-configured in the terminal device may be acquired. In this way, since the terminal device may receive one, two, or even 0 RRC message and system broadcast message for configuring any one or more of the parameters, setting priorities for various implementations of parameter configuration can ensure ordered rules for setting connection triggering conditions.

Therefore, the connection triggering condition provided by the embodiment of the application is set in consideration of various factors such as the channel quality of the existing service transmission, the QoS requirement of the new service, the service transmission mode and the like, so that the QoS requirement of the service transmission on the sidelink can be better ensured, and the situation that the terminal equipment cannot enter the RRC connection state due to too single connection establishment condition is avoided.

Referring to fig. 7, another resource configuration method provided in this embodiment of the present application is applicable to a scenario where a terminal device is switched from an RRC connected state to an RRC idle state or an RRC inactive state, or the terminal device leaves a coverage area of a network device. The method includes steps S701 to S702 as follows:

step S701, the terminal device enters an RRC idle state or an RRC inactive state, or leaves a coverage area of the network device.

In this embodiment, the entering of the terminal device into the RRC idle state may include: the terminal equipment enters an RRC idle state from an RRC connected state, or the terminal equipment enters the RRC idle state from an RRC non-activated state. The entering of the terminal device into the RRC inactive state may include a case where the terminal device enters the RRC inactive state from the RRC connected state. The terminal device leaving the coverage of the network device may include three situations, that the terminal device leaves the coverage of the network device from an RRC connected state, or the terminal device leaves the coverage of the network device from an RRC inactive state, or the terminal device leaves the coverage of the network device from an RRC idle state, and the like.

Step S702, the terminal device reserves a third transmission resource and/or a third transmission resource pool configured in the source cell.

And the third transmission resource pool are respectively used for supporting the side chain data transmission of the terminal equipment. The third transmission resource is a transmission resource scheduled by the second network device (e.g., the source network device) in the source cell for the terminal device, and may be a dedicated transmission resource of the terminal device corresponding to the first resource configuration mode. The third transmission resource pool is a transmission resource pool configured by the second network device (such as the source network device) for the terminal device in the source cell, and may be used in the case that there is no network scheduling resource, corresponding to the second resource configuration mode.

The third transmission resource may be a transmission resource that requires DCI indication activation or deactivation during configuration, or a transmission resource that does not require DCI indication activation or deactivation during configuration. In one possible design, the third transmission resource may be a configured grant for indicating to the terminal device the time and frequency range in which the traffic transmission is available, and may be configured by the second network device through an RRC message based on per cell and per BWP. The configured grant includes two types, namely a configured grant type1 and a configured grant type2, the configured grant type1 does not require the DCI carried on the PDCCH to indicate activation or deactivation during configuration, and the configured grant type2 requires the DCI carried on the PDCCH to indicate activation or deactivation during configuration. The third transmission resource pool is a set of a segment of time-frequency resources, and may include a transmission resource pool and a reception resource pool. In one possible design, the third pool of transmission resources may be resource pools configured for the second network device.

Therefore, when the terminal device enters an RRC idle state or an RRC inactive state, the transmission resource and/or the transmission resource pool originally configured by the second network device can be reserved, so that the service continuity is better supported, the QoS requirement of data transmission on the sidelink is met, and the situation that the data transmission on the sidelink is influenced by directly releasing the resource configured by the second network device when the RRC state is converted by the terminal device is avoided.

For a terminal device which is away from the coverage area of the network device, the terminal device cannot sense the system broadcast message sent by the network device considering that the terminal device is out of the coverage area of the network device. In this case, the terminal device reserves the transmission resource and/or the transmission resource pool originally configured by the second network device when in the coverage area of the network device, and can effectively support the service continuity of the terminal device on the sidelink.

And under the condition that the terminal equipment leaves the coverage of the network equipment, the terminal equipment can also release the third transmission resource and/or the third transmission resource pool after the effective duration corresponding to the third transmission resource and/or the third transmission resource pool respectively. It should be understood that the valid durations of the third transmission resource and the third transmission resource pool may be the same or different, and may all be set by those skilled in the art according to actual needs, and this application is not limited in this respect. For example, when the terminal device leaves the coverage area of the network device, a timer may be started to set the valid duration of the third transmission resource and/or the third transmission resource pool. And when the timer reminding effective duration arrives, releasing the third transmission resource and/or the third transmission resource pool.

In a possible design, the terminal device may receive an RRC message sent by a first network device (e.g., a target network device), determine an effective duration corresponding to a third transmission resource and/or a third transmission resource pool according to the RRC message, where the RRC message includes information for indicating the effective durations corresponding to the third transmission resource and/or the third transmission resource pool, respectively; and/or the terminal device may further receive a system broadcast message sent by the first network device, and determine an effective duration corresponding to the third transmission resource and/or the third transmission resource pool according to the system broadcast message, where the system broadcast message includes information for indicating effective durations corresponding to the third transmission resource and/or the third transmission resource pool, respectively; and/or the terminal device may obtain a third transmission resource pre-configured in the terminal device and/or an effective duration corresponding to the third transmission resource pool. Optionally, before leaving the coverage of the network device, the terminal device may determine the effective duration of the third transmission resource and/or the third transmission resource pool according to a received RRC message or a system broadcast message, or by using a method of obtaining a pre-configuration. Therefore, the effective duration of the third transmission resource and/or the third transmission resource pool can be configured through multiple possible implementation modes, so that the problems that the setting mode of the effective duration is too single, and the reserved transmission resource and/or the transmission resource pool is not released at a later time after the terminal equipment leaves the coverage range of the network equipment are solved, and the resource utilization rate of the system is effectively improved.

Optionally, the terminal device may also set a priority for various implementations of obtaining the validity duration (which may also be understood as an obtaining route or source of the validity duration). For example, the priority may be that the priority of the RRC message is greater than the priority of the system broadcast message, which is greater than the priority of the preconfigured parameters. Therefore, the terminal equipment can take the value configured according to the mode with the highest priority as the final value of the effective duration. For example, if receiving an RRC message for configuring an effective duration, the terminal device may determine the effective duration according to the RRC message; if the RRC message for configuring the effective duration is not received, but the system broadcast message for configuring the effective duration is received, determining the effective duration according to the system broadcast message; otherwise, if the RRC message for configuring the valid duration is not received, and the system broadcast message for configuring the valid duration is not received, the valid duration pre-configured in the terminal device may be obtained. In this way, since the terminal device may receive one, two, or even 0 RRC message and system broadcast message for configuring the effective duration, and set priorities for various implementation manners of the effective duration configuration, it may be ensured that the effective duration of the third transmission resource and/or the third transmission resource pool can be successfully set, so that after the terminal device leaves the coverage area of the network device, the part of resources may be released through the corresponding effective duration, thereby improving the resource utilization rate of the system.

In a case where the terminal device enters the RRC idle state or the RRC inactive state, the terminal device may receive a sixth message sent by the second network device (e.g., the source network device), where the sixth message is used for RRC connection release or RRC connection suspension. For example, if the terminal device enters the RRC idle state, the sixth message may be used for RRC connection release, and at this time, the sixth message may also be referred to as an RRC connection release message (RRC release message); if the terminal device enters the RRC inactive state, the sixth message may be used for RRC connection suspension, and at this time, the sixth message may be referred to as an RRC connection release message, or may also be referred to as an RRC connection suspension message, or may also have other names, which is not limited specifically. Optionally, the second network device may send the sixth message to the terminal device before the terminal device leaves the RRC connected state and enters the RRC idle state or the RRC inactive state.

In one possible design, the sixth message may include information indicating a first area, specifically, an area range in which the terminal device is allowed to continue using the third transmission resource and/or the third transmission resource pool when cell reselection occurs, and the first area may include one or more cells.

For example, in a situation where the terminal device is switched from the RRC connected state to the RRC inactive state, in order to better support mobility of the terminal device in the RRC inactive state, the first area may specifically be a first radio access network notification area (RAN-based notification area) area. When the terminal device moves in the first RNA area and cell reselection occurs, the terminal device can continue to use the reserved third transmission resource and/or the third transmission resource pool to transmit data. The first RNA region may be indicated by cell list celllist information carried in an Information Element (IE) in an RRC connection suspend message, or may be indicated by RAN area ID information carried in a system broadcast message.

For another example, in a situation where the terminal device is switched from the RRC connected state to the RRC idle state, in order to better support mobility of the terminal device in the RRC idle state, the first area may be specifically a first effective area. The first effective region functions similarly to the first RNA region. When the terminal device moves in the first effective area and cell reselection occurs, the terminal device may continue to use the reserved third transmission resource and/or the resource in the third transmission resource pool to transmit data, except that the terminal device is currently in an RRC idle state. It should be understood that the first active region may be indicated by information carried in an RRC connection release message or information carried in a system broadcast message, and the first active region may also have other names, which is not specifically limited in this application.

Alternatively, as shown in fig. 8, in a situation where the terminal device enters an RRC idle state or an RRC inactive state, in step S801, the terminal device may send a fourth message to the first network device, where the fourth message is used for RRC connection establishment or RRC connection recovery to enter the RRC connected state again. Information indicating the third transmission resource and/or the third transmission resource pool may be included in the fourth message.

In step S602, the first network device may send, to the terminal device, a fifth message in response to the fourth message, where the fifth message includes information indicating whether the terminal device continues to use the third transmission resource and/or the third transmission resource pool after accessing the target cell. For example, if the terminal device is in an RRC idle state before, the fourth message may be used for RRC connection establishment, where the fourth message may also be referred to as an RRC connection establishment message, and the fifth message may also be referred to as an RRC connection establishment response message; if the terminal device is in the RRC inactive state before, the fourth message may be used for RRC connection recovery, and at this time, the fourth message may also be referred to as an RRC connection recovery message, and the fifth message may also be referred to as an RRC connection recovery response message.

In a case where the first network device determines that the terminal device may use the third transmission resource and/or the third transmission resource pool after accessing the target cell, the fifth message may include third indication information, where the third indication information is used to indicate that the terminal device uses the third transmission resource and/or the third transmission resource pool after accessing the target cell. Alternatively, it may also be understood as indicating that the terminal device still reserves the third transmission resource and/or the third transmission resource pool after accessing the target cell.

And under the condition that the first network device determines that the terminal device does not use the third transmission resource and/or the third transmission resource pool after accessing the target cell, the fifth message includes fourth indication information, wherein the fourth indication information is used for indicating a fourth transmission resource and/or a fourth transmission resource pool reconfigured for the terminal device in the target cell by the first network device.

And the fourth transmission resource pool are respectively used for supporting the side chain data transmission of the terminal equipment. The fourth transmission resource is a transmission resource scheduled by the first network device for the terminal device in the target cell, and is a dedicated transmission resource of the terminal device corresponding to the first resource configuration mode. The fourth transmission resource pool is a transmission resource pool configured by the first network device for the terminal device in the target cell, and may be used in the case that there is no network scheduling resource, and corresponds to the second resource configuration mode. Similarly, the fourth transmission resource may be a transmission resource that requires DCI indication activation or deactivation at the time of configuration, or a transmission resource that does not require DCI indication activation or deactivation at the time of configuration. In one possible design, the fourth transmission resource may be a configured grant for indicating a time and frequency range available for traffic transmission to the terminal device, and may be configured by the first network device through an RRC message based on per cell and per BWP. The configured grant includes two types, namely a configured grant type1 and a configured grant type2, the configured grant type1 does not require the DCI carried on the PDCCH to indicate activation or deactivation during configuration, and the configured grant type2 requires the DCI carried on the PDCCH to indicate activation or deactivation during configuration. The fourth transmission resource pool is a set of a segment of time-frequency resources, and may include a transmission resource pool and a reception resource pool. In one possible design, the fourth pool of transmission resources may be resource pool configured for the first network device.

Thus, when the terminal device requests RRC connection establishment or RRC connection recovery, the current resource configuration of the terminal device, that is, the information indicating the currently reserved transmission resource and/or transmission resource pool, may be carried in the fourth message, and the first network device determines whether to continue using the current resource configuration or to reconfigure a new transmission resource or transmission resource pool, thereby effectively supporting service continuity of the terminal device and meeting the QoS requirement of the service.

As shown in fig. 8, after the first network device receives the fourth message sent by the terminal device, in step S803, the first network device may carry information indicating the third transmission resource and/or the third transmission resource pool, and send a resource configuration release message to the second network device to notify the first network device to release the third transmission resource and/or the third transmission resource pool. Further, in step S804, the first network device may receive a resource allocation release response message sent by the second network device. Therefore, the second network device can conveniently allocate the released third transmission resource and/or the resource in the third transmission resource pool to other terminal devices in the source cell for use, thereby effectively improving the resource utilization rate. For example, in the case that the fourth message indicates the first area, the first network device may carry information indicating the third transmission resource and/or the third transmission resource pool, send a resource configuration release message to one or more network devices in the first area, and receive a resource configuration release response message sent by the one or more network devices in the first area.

In one possible design, the terminal device may send a fourth message to request RRC connection establishment when leaving the first region and entering the second region. The second area may also include at least one cell, but the second area does not overlap with the first area.

For example, if the terminal device previously transitioned from the RRC connected state to the RRC inactive state, the RNA update procedure may be triggered when the terminal device leaves the first RNA region and enters the second RNA region (which is different from the first RNA region). Illustratively, the RNA update procedure may comprise: the terminal equipment sends a fourth message to the first network equipment for RRC connection establishment, wherein the fourth message comprises information for indicating a third transmission resource and/or a third transmission resource pool reserved by the terminal equipment; after receiving the fourth message, the second network device may send a resource configuration release message to the second network device through an Xn interface between the network devices, so as to notify the second network device to release the third transmission resource and/or the third transmission resource pool; meanwhile, the first network device may further decide whether the terminal device may continue to use the third transmission resource and/or the third transmission resource pool after the RRC connection of the terminal device is established; the first network device may send a fifth message to the terminal device, for responding to the RRC connection establishment request in the fourth message, where the fifth message includes information for indicating whether to continue using the third transmission resource and/or the third transmission resource pool; if the first network device determines to use a third transmission resource and/or a third transmission resource pool, the fifth message includes third indication information, for example, the third indication information may be a 1-bit indication bit for indicating that the current resource configuration is accepted; if the first network device determines not to use the third transmission resource and/or the third transmission resource pool, the fifth message includes fourth indication information for indicating the new resource configuration of the terminal device, for example, the fourth indication information may be information for indicating the fourth transmission resource and/or the fourth transmission resource pool newly allocated to the terminal device by the first network device. It should be noted that, in consideration that the terminal device may still continue to use the third transmission resource and/or the third transmission resource pool when performing cell reselection in the first RNA region, the first network device may send the resource configuration release message to the second network device, where the first network device sends the resource configuration release message to all network devices in the first RNA region, so that all network devices in the first RNA region release the third transmission resource and/or the third transmission resource pool, thereby improving resource utilization.

In another possible design, it is considered that a terminal device in an RRC idle state or an RRC inactive state may select resources from a third configured transmission resource pool for performing side-chain data transmission, and the resources selected from the third transmission resource pool may not guarantee data transmission of a service with high QoS requirements. Therefore, the terminal device in the RRC idle state may send a fourth message for RRC connection establishment to the first network device when a preset connection triggering condition is met; the terminal device in the RRC inactive state may send a fourth message for RRC connection recovery to the first network device when a preset connection triggering condition is satisfied. When the RRC connection is established between the terminal device and the first network device, and the terminal device is switched from the RRC idle state or the RRC inactive state to the RRC connected state, the resource configuration mode changes accordingly, and the terminal device may use the first resource configuration mode to request the first network device to schedule dedicated transmission resources for the terminal device, so as to better support the QoS requirement of the service.

The conditions for triggering the connection provided by the embodiment of the present application may include one or more of the following:

condition 1: when the resources in the third transmission resource pool are used for transmitting data, the channel state information is worse than or equal to a first threshold value, or the channel congestion degree is larger than or equal to a second threshold value.

In the embodiment of the present application, satisfying condition 1 means: the channel quality on the current sidelink is poor, and the sidechain data transmission of the existing service may not be guaranteed. The reason may be that terminal devices using similar transmission resources are close in distance and interfere with each other seriously, or the number of terminal devices in the same area is large, and the third transmission resource pool cannot support service transmission of the terminal devices, so that the terminal devices are required to initiate an RRC connection establishment request or an RRC connection recovery request.

In a possible design, the terminal device may determine a current channel quality condition according to received Channel State Information (CSI), and if the channel state information is worse or worse than or equal to a first threshold, it indicates that the channel quality is poor, and needs to request RRC connection establishment or RRC connection recovery. The terminal device may also measure a channel congestion degree on the configured transmission resource pool, for example, the channel congestion degree may be a Channel Busy Ratio (CBR), and when the channel congestion degree is greater than or equal to a second threshold, it indicates that the channel quality is poor and it needs to request RRC connection establishment or RRC connection recovery. When the terminal device sends the fourth message, the RRC connection establishment request or the RRC connection recovery request to the network device, the terminal device may further carry auxiliary information indicating a current network state (e.g., a measured channel congestion degree, etc.) in the fourth message, so that the first network device may configure a suitable dedicated transmission resource for the terminal device.

Condition 2: the third pool of transmission resources does not meet or cannot support the quality of service, QoS, requirements of the new service.

In this embodiment of the application, the step of the third transmission resource pool not meeting or being unable to support the QoS requirement of the new service may include: one or more of a transmission delay (latency) required by the new service is less than or equal to a third threshold, a reliability (reliability) required by the new service is greater than or equal to a fourth threshold, a transmission rate (data rate) required by the new service is greater than or equal to a fifth threshold, a communication distance (mismatch communication range) required by the new service is greater than or equal to a sixth threshold, and one or more QoS parameters corresponding to the new service exceed a seventh threshold range or are not in a range of the configuration list. The one or more QoS parameters herein may include one or more of PQI, VQI, 5QI, QFI, GFBR, MFBR, etc.

The reason why the QoS requirement of the new service is not met or cannot be supported may be that a higher QoS parameter required by the new service, such as a lower transmission delay, a higher reliability, a higher transmission rate, a larger communication distance, and the like, cannot be implemented on a resource selected based on a currently configured transmission resource pool, and the network device is required to configure a more appropriate transmission resource to meet the requirement of the new service.

Condition 3: the traffic pattern (traffic pattern) changes.

The service transmission mode includes various types of information such as a transmission period (periodicity) of a service, data volume information of service transmission, time information of service transmission, frequency information of service transmission, and the like. The service transmission period is used to indicate an estimated time interval of arrival of the service data on the logical channel, and may include, for example, various values such as 20ms, 50ms, 100ms, 200ms, and even 1000ms, which is not limited specifically; the data volume information transmitted by the service may be the size or data length of a Transport Block (TB) configured for the service, for example, the data volume information may be messagesize information; the time information of the traffic transmission is used to indicate the time position of the traffic transmission, and may be, for example, timing offset information.

It should be understood that, in a scenario where the terminal device does not have the reserved third transmission resource pool and/or the third transmission resource, the terminal device in the RRC idle state may also send a fourth message to the first network device for RRC connection establishment when a preset connection triggering condition is satisfied; the terminal device in the RRC inactive state may also send a fourth message to the first network device for RRC connection recovery when a preset connection triggering condition is met.

Referring to fig. 9, a schematic structural diagram of a communication device according to an embodiment of the present application is provided, where the communication device 900 includes: a transceiver module 910 and a processing module 920.

The communication device may be adapted to implement the functionality relating to the first network device in any of the above method embodiments. For example, the communication means may be the first network device or a chip included in the first network device. Alternatively, the communication apparatus may also be used to implement the functions related to the second network device in any of the above method embodiments, for example, the communication apparatus may be the second network device or a chip included in the second network device.

When the communication apparatus is used as a first network device to execute the method embodiment shown in fig. 4, a transceiver module 910 is configured to receive a first message sent by a second network device, where the first message is used for a handover request, and the first message includes information indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, where the first transmission resource and the first transmission resource pool are respectively used for supporting side chain data transmission of a terminal device, where the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control, RRC, connected state; the transceiver module 910 is further configured to send a second message for responding to the handover request to the second network device; the processing module 920 is configured to execute an operation of determining whether the terminal device continues to use the first transmission resource and/or the first transmission resource pool after being handed over to the target cell.

When the communication apparatus is used as a second network device to execute the method embodiment shown in fig. 4, a transceiver module 910 is configured to send a first message to the first network device, where the first message includes information indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, where the first transmission resource and the first transmission resource pool are respectively used for supporting side chain data transmission of a terminal device, the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control, RRC, connected state; the transceiving module 910 is further configured to receive a second message sent by the first network device and used for responding to the handover request, where the second message includes information used for instructing the terminal device to continue to use the first transmission resource and/or the first transmission resource pool after being handed over to the target cell. A processing module 920, configured to obtain a first transmission resource and/or a first transmission resource pool configured in a source cell.

It should be understood that the processing module 920 involved in the communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 910 may be implemented by a transceiver or transceiver-related circuit components. The operations and/or functions of the modules in the communication apparatus are respectively for implementing the corresponding flows of the method shown in fig. 4, and are not described herein again for brevity.

Please refer to fig. 10, which is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may be embodied as a network equipment, such as a base station. For implementing the functionality relating to the first network device in the above-described method embodiment or for implementing the functionality relating to the second network device in the above-described method embodiment.

The network device includes: one or more radio frequency units, such as a Remote Radio Unit (RRU) 1001 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 1002. The RRU 1001 may be referred to as a transceiver unit, transceiver circuit, or transceiver, etc., which may include at least one antenna 10011 and a radio frequency unit 10012. The RRU 1001 section is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals. The BBU 1002 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 1001 and the BBU 1002 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.

The BBU 1002 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) 1002 can be used to control a base station to execute the operation flow related to the network device in the above method embodiment.

In an example, the BBU 1002 may be formed by one or more boards, where the boards may collectively support a radio access network (e.g., an LTE network) with a single access indication, or may respectively support radio access networks (e.g., LTE networks, 5G networks, or other networks) with different access schemes. The BBU 1002 can also include a memory 10021 and a processor 10022, the memory 10021 being configured to store necessary instructions and data. The processor 10022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the transmitting operation in the above-described method embodiment. The memory 10021 and the processor 10022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

Referring to fig. 11, a schematic structural diagram of a communication device according to an embodiment of the present application is provided, where the communication device 1100 includes: a transceiver module 1110 and a processing module 1120.

The communication device can be used for realizing the functions related to the terminal equipment in any of the above method embodiments. For example, the communication means may be a terminal device, such as a vehicle-mounted terminal device; the communication device may also be a chip included in a terminal apparatus, or a device including a terminal apparatus, such as various types of vehicles and the like.

When the communication apparatus is used as a terminal device to execute the method embodiment shown in fig. 5, the processing module 1120 is configured to obtain that a condition for triggering a connection is satisfied, where the condition includes one or more of the following: when the system broadcast message does not comprise a transmission resource pool corresponding to the service interest frequency point and uses the transmission resource in the transmission resource pool corresponding to the service interest frequency point to transmit data, the channel state information is worse than or equal to a first threshold or the channel congestion degree is greater than or equal to a second threshold, the transmission resource pool configured for the current service interest frequency point does not meet the requirement of the quality of service (QoS) of a new service, and the service transmission mode changes; the transceiving module 1110 is configured to send a third message to the network device, where the third message is used for RRC connection establishment or RRC connection recovery.

When the communication apparatus is used as a terminal device to execute the method embodiment shown in fig. 8, the processing module 1120 is configured to enable the terminal device to enter a radio resource control, RRC, idle state or an RRC, inactive state, or leave a coverage of a network device; the processing module 1120 is further configured to reserve a third transmission resource and/or a third transmission resource pool configured in the source cell, where the third transmission resource and the third transmission resource pool are respectively used for supporting side-chain data transmission of the terminal device, the third transmission resource is a transmission resource scheduled for the terminal device in the source cell, and the third transmission resource pool is a transmission resource pool configured in the source cell.

The processing module 1120 involved in the communication apparatus may be implemented by a processor or processor-related circuit components, and the transceiver module 1110 may be implemented by a transceiver or transceiver-related circuit components. The operations and/or functions of the modules in the communication apparatus are respectively for implementing the corresponding flows of the methods shown in fig. 5 and fig. 8, and are not described herein again for brevity.

Please refer to fig. 12, which is a schematic structural diagram of another communication device provided in the embodiment of the present application. The communication device may specifically be a terminal device. For ease of understanding and illustration, in fig. 12, the terminal device is exemplified by a mobile phone. As shown in fig. 12, the terminal device includes a processor and may further include a memory, and of course, may also include a radio frequency circuit, an antenna, an input/output device, and the like. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 12. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 12, the terminal device includes a transceiving unit 1210 and a processing unit 1220. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing the receiving function in the transceiving unit 1110 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiving unit 1210 may be regarded as a transmitting unit, that is, the transceiving unit 1210 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc. It should be understood that the transceiving unit 1210 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above method embodiments, and the processing unit 1220 is configured to perform other operations besides the transceiving operation on the terminal device in the above method embodiments.

An embodiment of the present application further provides a chip system, including: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the system-on-chip to implement the method of any of the above method embodiments.

The system-on-chip may be, for example, a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

It will be appreciated that the steps of the above described method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

The embodiment of the present application further provides a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are read and executed by a computer, the computer is enabled to execute the method in any of the above method embodiments.

The embodiments of the present application further provide a computer program product, which when read and executed by a computer, causes the computer to execute the method in any of the above method embodiments.

The embodiment of the present application further provides a communication system, where the communication system includes one or more of the terminal device, the first network device, and the second network device described in the foregoing method embodiments.

It should be understood that the processor mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for resource allocation, the method comprising:

a first network device receives a first message sent by a second network device, where the first message is used for a handover request, the first message includes information used for indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, the first transmission resource and the first transmission resource pool are respectively used for supporting side-chain data transmission of a terminal device, the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a Radio Resource Control (RRC) connected state;

and the first network equipment sends a second message for responding to the switching request to the second network equipment, wherein the second message comprises information for indicating whether the terminal equipment continues to use the first transmission resource and/or the first transmission resource pool after being switched to a target cell.

2. The method according to claim 1, wherein in a case that the first network device uses the first transmission resource and/or the first transmission resource pool after deciding that the terminal device is handed over to the target cell, the second message includes first indication information, and the first indication information is used for indicating that the terminal device uses the first transmission resource and/or the first transmission resource pool after handing over to the target cell.

3. The method according to claim 1 or 2, wherein in a case that the first network device does not use the first transmission resource and/or the first transmission resource pool after deciding that the terminal device is handed over to the target cell, the second message includes second indication information, the second indication information is used for indicating a second transmission resource and/or a second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool are respectively used for supporting side-chain data transmission of the terminal device, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

4. The method according to any of claims 1 to 3, wherein the first transmission resource and/or the first transmission resource pool are obtained by the second network device from a measurement report message sent by the terminal device, or wherein the first transmission resource and/or the first transmission resource pool are determined by the second network device according to an identifier of the terminal device.

5. The method according to any one of claims 1 to 4, wherein the first transmission resource and the second transmission resource are transmission resources that need to be activated or deactivated by a DCI (Downlink control information) indication during configuration, or transmission resources that do not need to be activated or deactivated by a DCI indication during configuration;

the first transmission resource pool and the second transmission resource pool comprise a sending resource pool and a receiving resource pool.

6. A method for resource allocation, the method comprising:

a second network device sends a first message to a first network device, where the first message is used for a handover request, the first message includes information indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, the first transmission resource and the first transmission resource pool are respectively used for supporting side-chain data transmission of a terminal device, the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a Radio Resource Control (RRC) connected state;

and the second network equipment receives a second message which is sent by the first network equipment and used for responding to the switching request, wherein the second message comprises information used for indicating whether the terminal equipment continues to use the first transmission resource and/or the first transmission resource pool after being switched to a target cell.

7. The method according to claim 6, wherein in case that the first network device decides to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the second message includes first indication information, and the first indication information is used for indicating that the terminal device uses the first transmission resource and/or the first transmission resource pool after being handed over to the target cell.

8. The method according to claim 6 or 7, wherein in a case that the first network device decides not to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the second message includes second indication information, the second indication information is used to indicate a second transmission resource and/or a second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool are respectively used to support sidelink data transmission of the terminal device after the handover is completed, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

9. The method of any of claims 6 to 8, wherein before the second network device sends the first message to the first network device, the method further comprises:

the second network equipment receives a measurement report message sent by the terminal equipment and obtains the first transmission resource and/or the first transmission resource pool according to the measurement report message; or,

and the second network equipment determines the first transmission resource and/or the first transmission resource pool according to the identifier of the terminal equipment.

10. The method according to any one of claims 6 to 9, wherein the first transmission resource and the second transmission resource are transmission resources that need activation or deactivation of a downlink control information DCI indication during configuration, or transmission resources that do not need DCI activation indication or deactivation during configuration;

11. A communication apparatus, characterized in that the communication apparatus comprises:

a transceiver module, configured to receive a first message sent by a second network device, where the first message is used for a handover request, the first message includes information used for indicating a first transmission resource and/or a first transmission resource pool configured in a source cell, the first transmission resource and the first transmission resource pool are respectively used for supporting side-chain data transmission of the terminal device, the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control, RRC, connected state;

a processing module, configured to send, to the second network device through the transceiver module, a second message used for responding to the handover request, where the second message includes information used for indicating whether to continue to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell.

12. The communications apparatus as claimed in claim 11, wherein in a case that the processing module determines that the terminal device uses the first transmission resource and/or the first transmission resource pool after handing over to the target cell, the second message includes first indication information, and the first indication information is used to indicate that the terminal device uses the first transmission resource and/or the first transmission resource pool after handing over to the target cell.

13. The communications apparatus according to claim 11 or 12, wherein in a case that the processing module does not use the first transmission resource and/or the first transmission resource pool after deciding that the terminal device is handed over to the target cell, the second message includes second indication information, the second indication information is used to indicate a second transmission resource and/or a second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool are respectively used to support sidelink data transmission of the terminal device, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

14. The communications apparatus according to any one of claims 11 to 13, wherein the first transmission resource and/or the first transmission resource pool is obtained by the second network device from a measurement report message sent by the terminal device, or is determined by the second network device according to an identifier of the terminal device.

15. The communications apparatus according to any one of claims 11 to 14, wherein the first transmission resource and the second transmission resource are transmission resources that need to be activated or deactivated by a DCI indication when configured, or transmission resources that do not need to be activated or deactivated by a DCI indication when configured;

16. A communication apparatus, characterized in that the communication apparatus comprises:

a processing module, configured to send a first message to a first network device through a transceiver module, where the first message is used for a handover request, the first message includes information used to indicate a first transmission resource and/or a first transmission resource pool configured in a source cell, the first transmission resource and the first transmission resource pool are respectively used to support side-chain data transmission of the terminal device, the first transmission resource is a transmission resource scheduled for the terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control, RRC, connected state;

the transceiver module is further configured to receive a second message sent by the first network device and used for responding to the handover request, where the second message includes information used for indicating whether to continue to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell.

17. The communications apparatus according to claim 16, wherein in a case that the first network device decides to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the second message includes first indication information, and the first indication information is used for indicating that the terminal device uses the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell.

18. The communications apparatus according to claim 16 or 17, wherein in a case that the first network device decides not to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the second message includes second indication information, the second indication information is used to indicate a second transmission resource and/or a second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool are respectively used to support sidelink data transmission of the terminal device after the handover is completed, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

19. The communication apparatus according to any of claims 16 to 18, wherein, prior to sending the first message to the first network device,

the transceiver module is further configured to receive a measurement report message sent by the terminal device; the processing module is further configured to obtain the first transmission resource and/or the first transmission resource pool according to the measurement report message; or,

the processing module is further configured to determine the first transmission resource and/or the first transmission resource pool according to the identifier of the terminal device.

20. The communications apparatus according to any one of claims 16 to 19, wherein the first transmission resource and the second transmission resource are transmission resources that need to be activated or deactivated by a DCI indication when configured, or transmission resources that do not need to be activated or deactivated by a DCI indication when configured;

21. A method for resource allocation, the method comprising:

the method comprises the steps that a terminal device obtains a condition meeting triggering connection, wherein the condition comprises one or more of the following items:

when the system broadcast message does not comprise a transmission resource pool corresponding to the service interest frequency point and uses the transmission resource in the transmission resource pool corresponding to the service interest frequency point to transmit data, the channel state information is worse than or equal to a first threshold value, or the channel congestion degree is greater than or equal to a second threshold value, the transmission resource pool configured for the current service interest frequency point does not meet the requirement of the quality of service (QoS) of a new service, and the service transmission mode changes;

and the terminal equipment sends a third message to the network equipment, wherein the third message is used for establishing or recovering the RRC connection.

22. The method of claim 21, wherein the step of configuring the transmission resource pool for the frequency point of interest of the current service without satisfying the QoS requirement of the new service comprises:

the transmission delay required by the new service is less than or equal to a third threshold; or, the reliability required by the new service is greater than or equal to a fourth threshold; or, the transmission rate required by the new service is greater than or equal to a fifth threshold; or the communication distance required by the new service is greater than a sixth threshold; or, one or more QoS parameters corresponding to the new service exceed a seventh threshold range or are not in a range of a configuration list;

the service transmission mode is changed, including:

one or more of the transmission cycle of the service, the data volume information of the service transmission, the time information of the service transmission, and the frequency information of the service transmission are changed.

23. The method of claim 21 or 22, wherein for any one or more parameters including the first through seventh thresholds and the configuration list, the method further comprises:

the terminal equipment receives an RRC message sent by network equipment, wherein the RRC message comprises any one or more parameters; and/or the presence of a gas in the gas,

the terminal equipment receives a system broadcast message sent by the network equipment, wherein the system broadcast message comprises any one or more parameters; and/or the presence of a gas in the gas,

the terminal device obtains the any one or more parameters pre-configured in the terminal device.

24. The method of claim 23, further comprising:

the terminal equipment determines the value of any one or more parameters according to the received RRC message;

if the terminal equipment does not receive the RRC message, determining the value of any one or more parameters according to the system broadcast message;

and if the terminal equipment does not receive the RRC message and the system broadcast message, acquiring the any one or more pre-configured parameters.

25. A communications apparatus, the apparatus comprising:

the processing module is configured to acquire a condition that a trigger connection is satisfied, where the condition includes one or more of: when the system broadcast message does not comprise a transmission resource pool corresponding to the service interest frequency point and uses the transmission resource in the transmission resource pool corresponding to the service interest frequency point to transmit data, the channel state information is worse than or equal to a first threshold value, or the channel congestion degree is greater than or equal to a second threshold value, the transmission resource pool configured for the current service interest frequency point does not meet the requirement of the quality of service (QoS) of a new service, and the service transmission mode changes;

and the transceiver module is used for sending a third message to the network equipment, wherein the third message is used for establishing or recovering the Radio Resource Control (RRC) connection.

26. The communications apparatus as claimed in claim 25, wherein the transmission resource pool configured for the frequency point of interest of the current service does not meet the QoS requirement of the new service, comprising:

the service transmission mode is changed, including:

one or more of a transmission cycle of the service, data amount information of the service transmission, time information of the service transmission, and frequency information for the service transmission are changed.

27. The communications apparatus according to claim 25 or 26, wherein the transceiver module is further configured to, for any one or more parameters including the first to seventh thresholds and the configuration list:

receiving an RRC message sent by a network device, wherein the RRC message comprises the any one or more parameters; and/or the presence of a gas in the gas,

receiving a system broadcast message sent by the network device, wherein the system broadcast message comprises the any one or more parameters; and/or the presence of a gas in the gas,

and acquiring any one or more parameters pre-configured in the terminal equipment.

28. The communications apparatus of claim 27, wherein the processing module is further configured to:

determining the value of any one or more parameters according to the RRC message;

if the receiving and sending module does not receive the RRC message, determining the value of any one or more parameters according to the system broadcast message;

and if the transceiver module does not receive the RRC message and does not receive the system broadcast message, acquiring the any one or more pre-configured parameters.