CN110446231B

CN110446231B - Communication method and device of wireless network

Info

Publication number: CN110446231B
Application number: CN201810415848.9A
Authority: CN
Inventors: 王键; 沈丽; 刘海涛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-03
Filing date: 2018-05-03
Publication date: 2021-07-16
Anticipated expiration: 2038-05-03
Also published as: WO2019210813A1; CN110446231A

Abstract

The application provides a communication method and equipment of a wireless network. The method comprises the following steps: the terminal equipment sends first information to first network equipment; and the terminal equipment performs a low-delay cell switching process after sending the first information. Wherein the first information is used to indicate at least one of: the terminal equipment requests to perform cell switching with low delay; the terminal equipment performs low-delay cell switching; the terminal equipment supports the capacity of switching the low-delay cell; downlink transmission capability requested by the terminal device; downlink transmission capability of the terminal device; uplink transmission capability requested by the terminal device; and the uplink transmission capability of the terminal equipment. The technical scheme provided by the application can ensure that the terminal equipment (for example, UE) can definitely perform the cell switching with low time delay when performing the cell switching, thereby reasonably arranging the uplink and the downlink for communicating with the cell.

Description

Communication method and device of wireless network

Technical Field

The present application relates to the field of communications, and in particular, to a communication method and apparatus for a wireless network.

Background

In a mobile communication system, a terminal device (e.g., UE) communicates data with a network device by establishing a data link. When performing cell handover, the terminal device may generally include normal cell handover and low-latency cell handover (normal handover).

When the terminal device performs the ordinary cell switching, the terminal device needs to first interrupt the data communication with the source base station, and then can establish the data link with the target base station through the uplink access process. That is, in a normal cell handover, all transceiving links of the terminal device can communicate with one cell, and there is data interruption in the handover process. When a terminal device performs a low-latency cell handover (e.g., a 0 ms-latency cell handover), the terminal device needs to establish a data link with a target base station and perform data communication before interrupting data communication with a source base station, and then to interrupt data communication with the source base station. That is, the terminal device does not have interruption of data communication in cell handover with low latency.

In a 5G communication system, a terminal device may support a downlink 4 receive link and an uplink 2 transmit link. When a terminal device performs a low latency cell handover (e.g., a 0ms latency cell handover), a portion of the uplink/downlink of the terminal device communicates with the source base station and another portion of the uplink/downlink communicates with the target base station.

In the 5G communication system, when performing cell handover with low latency, it is unclear whether cell handover with low latency or ordinary cell handover is required, and thus it is not possible to reasonably arrange an uplink receiving link and a downlink transmitting link.

Disclosure of Invention

The application provides a communication method and equipment of a wireless network, and a terminal device (for example, UE) can reasonably arrange an uplink and a downlink for communicating with a cell in a cell switching process.

In a first aspect, a communication method of a wireless network is provided, where the communication method includes: the terminal equipment sends first information to first network equipment; and the terminal equipment performs a low-delay cell switching process after sending the first information.

The first network device is not specifically limited in this embodiment, and may be a source base station that communicates with the terminal device, or may be a target base station to which the terminal device needs to be handed over.

It should be understood that, in this embodiment of the present application, the first information sent by the terminal device to the first network device may explicitly indicate that the terminal device desires to perform low-latency cell handover, and may also implicitly indicate that the terminal device desires to perform low-latency cell handover.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate that the terminal device requests to perform cell handover with low latency.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate that the terminal device performs low-latency cell handover.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate a capability of a terminal device to support low-latency cell handover.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate a number of radio frequency chains used by the terminal device for downlink transmission.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate a number of MIMO layers or a number of streams that the terminal device uses for downlink transmission.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate the number of ports used by the terminal device for downlink transmission.

With reference to the first aspect, in some possible implementations of the first aspect, the first information may be used to indicate a number of a MIMO rank used by the terminal device for downlink transmission.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate a number of radio frequency chains used by the terminal device for uplink transmission.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate the number of MIMO layers or streams that the terminal device uses for uplink transmission.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first information may be used to indicate the number of ports used by the terminal device for uplink transmission.

With reference to the first aspect, in some possible implementations of the first aspect, the first information may be used to indicate a number of a multiple-input multiple-output, MIMO, rank used by the terminal device for uplink transmission.

In the above technical solution, the terminal device may perform the low-latency cell handover after sending the first information to the network device, and may perform the low-latency cell handover definitely, so that an uplink and a downlink for communicating with the cell may be arranged reasonably.

In one possible implementation, the communication method further includes: after the terminal device receives the second information sent by the first network device, the terminal device performs a low-latency cell switching process.

The embodiment of the application can also be implemented after the terminal device receives the second information sent by the first network device. And then carrying out a low-delay cell switching process.

With reference to the second aspect, in some possible implementation manners of the second aspect, the second information may be used to indicate that the first network device confirms that the terminal device performs cell handover with low latency.

With reference to the second aspect, in some possible implementation manners of the second aspect, the second information may be used to indicate that the first network device configures the terminal device to perform low-latency cell handover.

With reference to the second aspect, in some possible implementations of the second aspect, the second information may be used to indicate that the first network device confirms the downlink transmission capability of the terminal device.

With reference to the second aspect, in some possible implementations of the second aspect, the second information may be used to indicate that the first network device configures the downlink transmission capability of the terminal device.

In the above technical solution, the terminal device may perform the low-latency cell handover procedure after receiving the information sent by the network device, so that the terminal device may avoid determining to perform the low-latency cell handover procedure according to its own condition.

In a possible implementation manner, when the terminal device determines to perform cell handover with low latency according to one or more of the type of the service carried, the minimum number of transmission links performing uplink data transmission with the first network device, and a power control parameter of the uplink data transmission, the terminal device sends the first information to the first network device.

It should be understood that, in some embodiments, when the terminal device sends the first network device a cell handover with low latency is desired, it may first determine whether the cell handover with low latency is needed and/or supported according to its own condition (e.g., one or more conditions among the type of traffic currently carried, the minimum number of transmission links for performing uplink data transmission, and power control parameters).

In the above technical solution, the terminal device may determine whether to require and/or support low-latency cell handover according to the type of the service being carried and the power control parameter before performing the low-latency cell handover procedure, so as to further ensure accurate communication.

In a possible implementation manner, the terminal device performs downlink transmission of low-latency cell handover according to the requested downlink transmission capability; or the terminal equipment carries out the uplink transmission of the low-delay cell switching according to the requested uplink transmission capacity.

The embodiment of the present application does not specifically limit the uplink transmission capability or the downlink transmission capability of the terminal device in the uplink or downlink transmission process. The terminal device may determine an uplink transmission capability or a downlink transmission capability, or an uplink transmission capability or a downlink transmission capability configured by the first network device for the terminal device.

It should be understood that uplink transmission or downlink transmission may be performed during the low-latency cell handover of the terminal device.

In a possible implementation manner, the terminal device performs downlink transmission for low-latency cell handover according to downlink transmission capability of the terminal device or performs uplink transmission for low-latency cell handover according to uplink transmission capability of the terminal device.

In the above technical solution, the terminal device performs a low-latency cell handover procedure according to the uplink/downlink transmission capability configured by the network device, so that the terminal device can be prevented from performing scheduling and cell handover according to its own condition.

In one possible implementation, the first information includes at least one of the following information: cell switching request information of the terminal equipment with low delay; the low-delay cell switching capability of the terminal equipment; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the capability of a downlink receiving link for the terminal device to communicate with a second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

It should be understood that the content of the first information in the embodiment of the present application may correspond to the content indicated by the first information.

In one possible implementation, the second information includes at least one of the following information: the terminal equipment carries out cell switching confirmation information with low time delay; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the terminal device has a downlink receiving link capability for communicating with the second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

It should be understood that the content of the second information in the embodiment of the present application may correspond to the content indicated by the second information.

In one possible implementation, the first information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

In a possible implementation manner, the first information is carried on the RRC signaling, and the terminal device sends the first information when sending a measurement report to the first network device; or, the terminal device sends the first information after sending the measurement report to the first network device.

In the embodiment of the present application, the time for the terminal device to send the first information is not specifically limited, and the first information may be sent when the measurement report is sent to the first network device, or the first information may be sent after the measurement report is sent to the first network device.

In one possible implementation, the second information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

In a possible implementation manner, the second information is carried on the RRC signaling, and after the terminal device receives the second information on the RRC connection reconfiguration signaling sent by the first network device, the terminal device performs a low-latency cell handover procedure.

It should be appreciated that the RRC connection reconfiguration signaling is signaling that configures the terminal device for low latency cell handover.

In a possible implementation manner, the first network device is a source network device to which the terminal device performs handover, and the second network device is a target network device to which the terminal device performs handover, or the first network device is a target network device to which the terminal device performs handover, and the second network device is a source network device to which the terminal device performs handover.

In a second aspect, a communication method of a wireless network is provided, the communication method including: the first network equipment sends first information to the terminal equipment; and the first network equipment performs a low-delay cell switching process after sending the first information.

It should be understood that the terminal device may perform the cell handover procedure with low latency after receiving the indication information of the first network device.

With reference to the second aspect, in some possible implementation manners of the second aspect, the first information may be used to indicate that the first network device instructs the terminal device to perform cell handover with low latency.

With reference to the second aspect, in some possible implementation manners of the second aspect, the first information may be used to indicate that the first network device configures the terminal device to perform low-latency cell handover.

With reference to the second aspect, in some possible implementations of the second aspect, the first information may be used to indicate that the first network device configures downlink transmission capability of the terminal device.

It should be understood that the downlink transmission capability is not specifically limited in the embodiments of the present application. The number of radio frequency chains used by the terminal device for downlink transmission, or the number of MIMO layers or streams used by the terminal device for downlink transmission, or the number of MIMO ranks used by the terminal device for downlink transmission, or the number of ports used by the terminal device for downlink transmission may be included, but is not limited thereto.

With reference to the second aspect, in some possible implementations of the second aspect, the first information may be used to indicate that the first network device configures an uplink transmission capability of the terminal device.

It should be understood that the uplink transmission capability is not specifically limited in the embodiments of the present application. The number of radio frequency chains used by the terminal device for uplink transmission, or the number of MIMO layers or streams used by the terminal device for uplink transmission, or the number of MIMO ranks used by the terminal device for uplink transmission, or the number of ports used by the terminal device for uplink transmission may be included, but is not limited thereto.

In the above technical solution, the terminal device may perform the low latency cell handover after receiving the first information sent by the first network device, and may definitely perform the low latency cell handover, so that the terminal device may reasonably arrange an uplink and a downlink for communicating with the cell.

In one possible implementation, the communication method further includes: after the first network device receives second information sent by the terminal device, the first network device performs a low-latency cell handover process, where the second information is used for the terminal device to confirm that the first network device performs the low-latency cell handover.

In the embodiment of the present application, after the terminal device receives the confirmation information sent by the terminal device at the first network device, the cell handover procedure with low delay may be performed.

In a possible implementation manner, the first information is used to configure downlink transmission capability of the terminal device, and the first network device performs downlink transmission for low-latency cell handover according to the downlink transmission capability; the first information is used for configuring the uplink transmission capability of the terminal device, and the first network device performs uplink transmission of low-latency cell switching according to the uplink transmission capability.

It should be understood that the first network device may perform uplink transmission for low-latency cell handover according to the uplink transmission capability configured for the terminal device, or perform downlink transmission for low-latency cell handover according to the downlink transmission capability configured for the terminal device.

In one possible implementation, the first information includes at least one of the following information: the terminal equipment carries out low-delay cell switching indication information; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the capability of a downlink receiving link for the terminal device to communicate with a second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

In a possible implementation manner, the second information is cell handover confirmation information with low latency for the terminal device.

In one possible implementation, the first indication information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

In a possible implementation manner, the first information is carried on the RRC signaling, the first network device sends the first information to the terminal device, and the first network device sends the first information on the RRC connection reconfiguration signaling sent to the terminal device.

In a possible implementation manner, the second information is carried on the RRC signaling, and after the first network device receives the second information on the RRC connection reconfiguration signaling sent by the terminal device, the first network device performs a low-latency cell handover procedure.

In a third aspect, a communication device of a wireless network is provided, the communication device comprising: a transceiver for transmitting first information to a first network device; a processor configured to perform a low-latency cell handover procedure after sending the first information, wherein the first information is used to indicate at least one of: the terminal equipment requests to perform cell switching with low delay; the terminal equipment performs low-delay cell switching; the terminal equipment supports the capability of switching the low-delay cell; downlink transmission capability requested by the terminal device; a downlink transmission capability of the terminal device, where the downlink transmission capability includes a number of radio frequency chains used for downlink transmission, or a number of layers or streams of multiple-input multiple-output MIMO used for downlink transmission, or a number of multiple-input multiple-output MIMO ranks used for downlink transmission, or a number of ports used for downlink transmission; the uplink transmission capability requested by the terminal device; the terminal device includes an uplink transmission capability, where the uplink transmission capability includes a number of radio frequency chains for uplink transmission, or a number of multiple-input multiple-output MIMO layers or streams for uplink transmission, or a number of multiple-input multiple-output MIMO ranks for uplink transmission, or a number of ports for uplink transmission.

It should be understood that the "transceiver" in the embodiments of the present application may also be referred to as a "communication interface", "transmitter", etc.

In some possible implementations, the processor is further configured to: after receiving second information sent by the first network device, the terminal device performs a low-latency cell handover procedure, where the second information is used to indicate at least one of the following: confirming the terminal equipment to perform low-delay cell switching; configuring the terminal equipment to perform low-delay cell switching; confirming the downlink transmission capability of the terminal equipment; configuring the downlink transmission capability of the terminal device. Confirming the uplink transmission capability of the terminal equipment; and configuring the uplink transmission capability of the terminal equipment.

In some possible implementations, the transceiver is specifically configured to: when the terminal device determines to perform cell handover with low delay according to one or more of the type of the service carried, the minimum number of transmission links for performing uplink data transmission with the first network device, and the power control parameter for the uplink data transmission, the terminal device transmits first information to the first network device.

In some possible implementations, the processor is specifically configured to: performing downlink transmission of low-delay cell switching according to the downlink transmission capability; or the uplink transmission of the low-delay cell switching is carried out according to the uplink transmission capability.

In some possible implementations, the first information includes at least one of the following information: cell switching request information of the terminal equipment with low delay; the low-delay cell switching capability of the terminal equipment; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the capability of a downlink receiving link for the terminal device to communicate with a second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

In some possible implementations, the second information includes at least one of the following information: the terminal equipment carries out cell switching confirmation information with low time delay; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the terminal device has a downlink receiving link capability for communicating with the second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

In some possible implementations, the first information is carried on radio resource control, RRC, signaling and/or media intervention control, mac ce, signaling.

In some possible implementations, the terminal device sends the first information when sending the measurement report to the first network device; or, the terminal device sends the first information after sending the measurement report to the first network device.

In some possible implementations, the second information is carried on radio resource control, RRC, signaling and/or media intervention control, mac ce, signaling.

In some possible implementation manners, after the terminal device receives the second information on the RRC connection reconfiguration signaling sent by the first network device, the terminal device performs a low-latency cell handover procedure, where the RRC connection reconfiguration signaling is a signaling that configures the terminal device to perform low-latency cell handover.

In some possible implementations, the first network device is a source network device to which the terminal device performs handover, and the second network device is a target network device to which the terminal device performs handover, or the first network device is a target network device to which the terminal device performs handover, and the second network device is a source network device to which the terminal device performs handover.

In a fourth aspect, there is provided a communication device of a wireless network, the communication device comprising: the transceiver is used for sending first information to the terminal equipment; a processor configured to perform a low-latency cell handover procedure after transmitting first information, the first information indicating at least one of: instructing the terminal equipment to perform low-delay cell switching; configuring the terminal equipment to perform low-delay cell switching; configuring downlink transmission capability of the terminal device, where the downlink transmission capability includes the number of radio frequency chains used by the terminal device for downlink transmission, or the number of layers or streams of multiple-input multiple-output (MIMO) used by the terminal device for downlink transmission, or the number of MIMO ranks used by the terminal device for downlink transmission, or the number of ports used by the terminal device for downlink transmission; configuring an uplink transmission capability of the terminal device, where the uplink transmission capability includes a number of radio frequency chains used by the terminal device for uplink transmission, or a number of multiple-input multiple-output (MIMO) layers or streams used by the terminal device for uplink transmission, or a number of MIMO ranks used by the terminal device for uplink transmission, or a number of ports used by the terminal device for uplink transmission.

In some possible implementations, the processor is further configured to: after receiving second information sent by the terminal device, the first network device performs a low-latency cell handover procedure, where the second information is used for the terminal device to confirm that the first network device performs low-latency cell handover.

In some possible implementations, the processor is specifically configured to: and carrying out downlink transmission of low-delay cell switching according to the downlink transmission capability.

In some possible implementations, the processor is specifically configured to: and carrying out the uplink transmission of the low-delay cell switching according to the uplink transmission capability.

In some possible implementations, the first information includes at least one of the following information: the terminal equipment carries out low-delay cell switching indication information; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the capability of a downlink receiving link for the terminal device to communicate with a second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

In some possible implementations, the second information is cell handover confirmation information with low latency for the terminal device.

In some possible implementations, the first indication information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

In some possible implementations, the transceiver is specifically configured to: and sending the first information on an RRC connection reconfiguration signaling sent to the terminal equipment, wherein the RRC connection reconfiguration signaling is a signaling for configuring the terminal equipment to perform low-delay cell switching.

In some possible implementations, the processor is specifically configured to: after receiving the second information on the RRC connection reconfiguration signaling sent by the terminal device, the first network device performs a low-latency cell handover procedure.

In a fifth aspect, a communication device is provided for performing the method of the first aspect or any possible implementation manner of the first aspect. In particular, the communication device comprises means for performing the method of the first aspect described above or any one of the possible implementations of the first aspect.

A sixth aspect provides a communication device for performing the method of the second aspect or any possible implementation manner of the second aspect. In particular, the communication device comprises means for performing the method of the second aspect described above or any of its possible implementations.

In a seventh aspect, a chip system is provided, which is applied in a communication device, and includes: the chip system comprises at least one processor, at least one memory and an interface circuit, wherein the interface circuit is responsible for information interaction between the chip system and the outside, the at least one memory, the interface circuit and the at least one processor are interconnected through lines, and instructions are stored in the at least one memory; the instructions are executable by the at least one processor to perform operations of the communication device in the method of the various aspects described above.

In an eighth aspect, there is provided a communication system comprising: a communication device; the communication device is the communication device according to the above aspects.

In a ninth aspect, there is provided a computer program product for use in a communications device, the computer program product comprising a series of instructions which, when executed, is operable to carry out the operations of the communications device in the method of the above aspects.

In a tenth aspect, there is provided a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

Fig. 1 is a schematic flowchart of a UE for 0ms handover signaling applied to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a wireless communication system 200 to which an embodiment of the present application is applied.

Fig. 3 is a schematic flow chart of a communication method of a wireless network according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of a communication method of a wireless network according to another embodiment of the present application.

Fig. 5 is a schematic flow chart of a communication method of a wireless network according to another embodiment of the present application.

Fig. 6 is a schematic flow chart of a communication method of a wireless network according to another embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device 700 of a wireless network provided by an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication device 800 of a wireless network provided by an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device 900 of a wireless network provided by an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device 1000 of a wireless network provided by an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

It should be understood that the technical solutions of the embodiments of the present application may be applied to various communication systems, for example: a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) system, a Frequency Division Duplex (FDD) system, a Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future fifth generation (5G) or New Radio (NR) system, and the like.

The type of the terminal device in this embodiment is not specifically limited, and may be, for example, a User Equipment (UE), an access terminal, a terminal device, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless network device, a user agent, or a user equipment. A terminal may include, but is not limited to, a Mobile Station (MS), a mobile phone (mobile telephone), a User Equipment (UE), a handset (handset), a portable device (portable), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a radio frequency identification for logistics (RFID) terminal device, a handheld device with wireless communication capability, a computing device or other device connected to a wireless modem, a vehicle mounted device, a wearable device, an internet of things, a terminal device in a vehicle network, and a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The type of the network device is not particularly limited in the embodiments of the present application, and may be any device for communicating with the terminal device, the network device may be, for example, a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be, for example, a relay station, an access point, a vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, etc.

As a possible approach, the network device may be composed of a Centralized Unit (CU) and a Distributed Unit (DU). One CU can be connected to one DU, or a plurality of DUs can share one CU, which can save cost and facilitate network expansion. The CU and the DU may be divided according to a protocol stack, wherein one possible manner is to deploy a Radio Resource Control (RRC), a service data mapping protocol Stack (SDAP), and a Packet Data Convergence Protocol (PDCP) layer in the CU, and deploy the remaining Radio Link Control (RLC), a Medium Access Control (MAC) layer, and a physical layer in the DU.

In addition, in the embodiment of the present application, the network device provides a service for a cell, and the terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

The method provided by the embodiment of the application can be applied to terminal equipment or network equipment, and the terminal equipment or the network equipment comprises a hardware layer, an operating system layer running on the hardware layer and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. In the embodiment of the present application, a specific structure of an execution main body of a method for transmitting a signal is not particularly limited in the embodiment of the present application as long as communication can be performed by the method for transmitting a signal according to the embodiment of the present application by running a program in which a code of the method for transmitting a signal of the embodiment of the present application is recorded.

Moreover, various aspects or features of embodiments of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

As described above, in the prior art, when a terminal device performs a cell handover with low latency in a 5G communication system, it is unclear whether the cell handover with low latency or a normal cell handover is required, and thus an uplink receiving link and a downlink transmitting link cannot be arranged reasonably. This is explained in detail below with reference to fig. 1.

In an LTE communication system, the antenna configuration of a terminal device (e.g., UE) is 1T2R, that is, the default configuration of the terminal device is uplink 1 transmission link and downlink 2 reception link. The terminal equipment can perform ordinary switching when performing cell switching. When the terminal equipment is switched in a cell, the terminal equipment needs to firstly interrupt data communication with a source base station and then can establish data link with a target base station through an uplink access process. During normal handover there will be handover data interruption.

A low-latency cell handover (e.g., a 0 ms-latency cell handover) may be used to indicate that the terminal device needs to establish a data link with the target base station and perform data communication before interrupting data communication with the source base station during the cell handover. In the process of cell switching with low delay, the terminal equipment can ensure that the data communication is carried out with the source base station and the target base station at the same time, and the terminal equipment and the source base station have no interruption of the data communication, so that the cell switching with low delay can be realized.

In a 5G NR communication system, the antenna configuration of a terminal device (e.g., UE) that is already commonly known by the standard may be an uplink 2 transmission link and a downlink 4 reception link for some specific frequency allocation bands.

Therefore, in the 5G NR communication system, when a terminal device (e.g., UE) can perform cell handover with low latency, a part of the downlink receiving link may be communicated with the source base station, and a part of the downlink receiving link may be switched to communicate with the target base station; meanwhile, a part of the uplink receiving link can be communicated with the source base station, and a part of the uplink receiving link can be switched to be communicated with the target base station.

The following describes a cell handover procedure of a terminal device (e.g., UE) for 0ms in detail with reference to fig. 1.

Fig. 1 is a schematic flowchart of a UE for performing 0ms handover signaling, which is applied in the embodiment of the present application, and the steps in fig. 1 include steps 110 and 180, which are described in detail below. Step 110: the UE receives measurement control (measurement control) transmitted by a source base station (source node).

The source base station can send different types of measurement tasks to the UE by using a mobility management algorithm according to different needs, send measurement configuration to the UE in an RRC configuration message, and send the measurement configuration to the UE through a meas configuration cell carried in the RRC connection configuration message. The meas config information element may indicate an object for which the UE performs measurement, a standard of a measurement report, a format of the measurement report, an interval of measurement, and the like.

In step 115, the UE sends a measurement report (measurement report) to the source base station.

The UE may perform measurement configuration at an RRC protocol of the UE according to a measurement configuration message sent by the source base station, and may report the measurement configuration to the source base station through a measurement report if the UE finds that the measurement environment satisfies an event described in a measurement control during measurement.

Prior to step 115, data may be communicated between the UE and the source base station, which may be encrypted using the key of the source base station.

Step 120, the source base station performs handover decision (handover decision). And after receiving the measurement report sent by the UE, the source base station starts to judge whether a switching command needs to be issued. If a handover command needs to be issued, the source base station may send a handover request to a target base station to be handed over, and the source base station applies for a new air interface resource for the UE.

In step 125, the source base station sends a handover request to the target base station (target node).

The source base station may send a handover request to the target base station, requesting the target base station to grant the UE access. The handover request signaling may include a reason why the UE needs to perform handover, context information of the UE, history information of the UE, and the like.

In step 130, the target base station replies a handover request ACK to the source base station.

And the target base station judges after receiving the handover request sent by the source base station, and replies a handover request ACK to the source base station if the target base station agrees to the access of the UE.

In step 135, the source base station issues an RRC connection reconfiguration (RRC connection reconfiguration) to the UE.

After receiving the handover request ACK sent by the target base station (a new air interface resource application is successful), the source base station may issue a handover command to the UE through an RRC connection reconfiguration signaling, and instruct the UE to initiate a handover action.

The RRC connection reconfiguration signaling may include a cell ID, a carrier frequency, a new UE identity, etc. of the target cell.

Step 140, the UE synchronizes with the target base station and keeps connecting with the source base station (synchronization to target cell push connection with source cell).

After receiving the RRC connection configuration signaling sent by the source base station, the UE may switch a part of the uplink transmission link and/or the downlink reception link to complete synchronization with the target base station according to the switching command prompt, and meanwhile, the UE keeps data link between another part of the uplink transmission link and/or the downlink reception link and the source base station.

Prior to step 145, the source base station may forward the data of the UE to the target base station.

Step 145, the UE sends a Physical Random Access Channel (PRACH) to the target base station.

The UE may initiate random access to the target base station by sending a physical random access channel.

In step 150, the target base station allocates Uplink (UL) to the UE.

And after receiving the random access request sent by the UE, the target base station allocates uplink resources for the UE.

In step 155, the UE sends an RRC connection reconfiguration complete (RRC connection reconfiguration complete) to the target base station.

After accessing a new cell (target base station), the UE sends an RRC connection configuration complete to the target base station, which prompts the target base station that the UE has accessed the target base station.

In step 160, the UE distinguishes whether a Packet Data Convergence Protocol (PDCP) data packet is from a source base station or a target base station (PDCP packet from source or target cell).

The UE can distinguish whether PDCP data is from the source base station or the target base station when communicating data with the source base station and the target base station simultaneously.

Prior to step 160, the UE communicates data with the source base station, which may be encrypted using the key of the source base station; the UE also communicates data with the target base station, which may be encrypted using the key of the target base station.

In step 165, the UE detaches from the source cell (fetch from source cell).

The UE may interrupt the data link with the source base station only after the UE simultaneously performs data communication with the source base station and the target base station.

In step 170, the source base station sends SN status transition (SN status transition) to the target base station.

After the UE confirms to perform data linking with the target base station and discontinues the data linking with the source base station, the source base station may send the SN status transmitter of the UE to the target base station.

In step 175, the target base station sends UE context release (UE context release) to the source base station.

After receiving the SN status transmitter of the UE sent by the source base station, the target base station may send a UE context release command to the source base station.

In step 180, the source base station releases the resource (release resource).

The source base station may release the resource occupied by the UE after receiving the UE context release command sent by the target base station.

As can be seen from the above 0ms handover procedure in fig. 1, a terminal device (e.g., UE) receives an uplink transmission sent by a source base station using a single uplink. At this time, the UE may drop a portion of the uplink transmission link for data link with the target base station, but it is unclear to the UE whether the UE uses a single uplink for uplink transmission due to channel characteristic scheduling or the source base station wants the UE to use another portion of the uplink for data link with the target base station (i.e., for 0 ms-delayed cell handover).

In the above switching process with 0ms delay, if the antenna configuration of the UE is the uplink 2 transmission link and the downlink 4 reception link, the UE may separate one uplink transmission link to establish a data link with the target base station. However, it is unclear whether the UE should separate 1 downlink receiving link or 2 downlink receiving links to establish data link with the target base station facing 4 downlink receiving links.

In view of the above problems, embodiments of the present application provide a communication method for a wireless network, in which a terminal device can definitely perform cell switching with low latency, so that an uplink and a downlink for communicating with a cell can be reasonably arranged.

Fig. 2 is a schematic diagram of a wireless communication system applied to an embodiment of the present application. As shown in fig. 2, the wireless communication system 200 includes a network device 202, and the network device 202 may include 1 antenna or multiple antennas, e.g.,

antennas

204, 206, 208, 210, 212, and 214. Additionally, network device 202 can additionally include a transmitter chain and a receiver chain, each of which can comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art.

Network device 202 may communicate with a plurality of terminal devices, such as terminal device 216 and terminal device 222. However, it is understood that network device 202 may communicate with any number of terminal devices similar to terminal device 216 or terminal device 222. The

end devices

216 and 222 may be, for example, cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable device for communicating over the wireless communication system 200.

As shown in fig. 2, terminal device 216 is in communication with

antennas

212 and 214, where

antennas

212 and 214 transmit information to terminal device 216 over a forward link (also called a downlink) 218 and receive information from terminal device 216 over a reverse link (also called an uplink) 220. In addition, terminal device 222 is in communication with

antennas

204 and 206, where

antennas

204 and 206 transmit information to terminal device 222 over forward link 224 and receive information from terminal device 222 over reverse link 226.

Each antenna (or group of antennas consisting of multiple antennas) and/or area designed for communication is referred to as a sector of network device 202. For example, antenna groups can be designed to communicate to terminal devices in a sector of the areas covered by network device 202. A network device may transmit signals to all terminal devices in its corresponding sector through single-antenna or multi-antenna transmit diversity. During communication between network device 202 and

terminal devices

216 and 222 via

forward links

218 and 224, respectively, the transmitting antennas of network device 202 can also utilize beamforming to improve signal-to-noise ratio of

forward links

218 and 224. Moreover, mobile devices in neighboring cells can experience less interference when network device 202 utilizes beamforming to transmit to

terminal devices

216 and 222 scattered randomly through an associated coverage area than when the network device transmits through single or multiple antenna transmit diversity to all of its terminal devices.

At a given time, network device 202, terminal device 216, or terminal device 222 may be a wireless communication transmitting apparatus and/or a wireless communication receiving apparatus. When sending data, the wireless communication sending device may encode the data for transmission. Specifically, the wireless communication transmitting device may obtain (e.g., generate, receive from other communication devices, or save in memory, etc.) a number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be contained in a transport block (or transport blocks) of data, which may be segmented to produce multiple code blocks.

In addition, the communication system 200 may be a PLMN network, a D2D network, an M2M network, or other networks, and fig. 2 is a simplified schematic diagram of an example, and other network devices may be included in the network, which are not shown in fig. 2.

The embodiment of the application provides a communication method of a wireless network, and terminal equipment can definitely perform cell switching with low delay, so that an uplink and a downlink for communicating with network equipment can be reasonably arranged.

The following describes in detail a communication method of a wireless network provided in an embodiment of the present application.

Fig. 3 is a schematic flow chart of a communication method of a wireless network according to an embodiment of the present application. The method of FIG. 3 may include steps 310-320, and the steps 310-320 are described in detail below.

In step 310, the terminal device sends first information to the first network device.

In this embodiment, the terminal device may send first information to the first network device, where the first information may indicate that the terminal device desires to perform low latency cell handover.

The first network device is not specifically limited in this embodiment, and may be any network device that communicates with the terminal device. As one example, the first network device may be a source base station in communication with the terminal device. As another example, the first network device may also be a target base station to which the terminal device needs to be handed over. The terminal device may directly send a request for performing low-latency cell handover to the source base station, or may send a request for performing low-latency cell handover to a target base station to which handover is required.

The embodiment of the application does not specifically limit the cell switching with low delay, and the delay of the cell switching of the terminal equipment can be less than or equal to a certain threshold. As an example, the terminal device may perform a 0ms delayed cell handover. As another example, the terminal device may perform a 0.1ms delayed cell handover.

The type corresponding to the first information is not specifically limited in the embodiment of the present application. As an example, the first information may explicitly indicate that the terminal device desires to perform a low-latency cell handover, for example, the terminal device may request the first network device to perform the low-latency cell handover, and for example, the terminal device may report the capability of supporting the low-latency cell handover to the first network device, and for example, the terminal device may report the capability of performing the low-latency cell handover to the first network device. As another example, the first information may implicitly indicate that the terminal device desires a low-latency cell handover, e.g., the terminal device may report uplink transmission capability and/or downlink transmission capability of the terminal device to the first network device, e.g., the terminal device may report uplink transmission capability and/or downlink transmission capability requested by the terminal device to the first network device. The type corresponding to the first information will be described in detail below, and will not be described herein again.

In step 320, the terminal device performs a low-latency cell handover procedure after sending the first information.

The terminal device may perform a low-latency cell handover (e.g., a 0 ms-latency cell handover) after sending the first information to the first network device.

In the embodiment of the application, the terminal device may perform the low-latency cell handover after sending the first information to the network device, which may ensure the continuity of the service, and may definitely perform the low-latency cell handover, thereby reasonably arranging the uplink and the downlink for communicating with the cell.

The following describes the first information in detail, taking as an example that the first information can explicitly indicate that the terminal device desires to perform a low-latency cell handover.

Optionally, in some embodiments, the first information may indicate that the terminal device requests a cell handover with low latency. As an example, the first information may be low-latency cell handover request information of the terminal device.

It should be understood that the first information may be used to indicate that the terminal device requests to perform the low-latency cell handover, and the terminal device may perform the low-latency cell handover procedure after receiving the acknowledgement information sent by the first network device. This will be described in more detail below in connection with the embodiment of fig. 3.

Optionally, in some embodiments, the first information may indicate that the terminal device performs cell handover with low latency.

It should be understood that the first information may be used to indicate that the terminal device may perform the low-latency cell handover, and the terminal device may decide to perform the low-latency cell handover procedure by itself, and may not need the acknowledgement information of the first network device.

Optionally, in some embodiments, the first information may indicate a capability of the terminal device to support low-latency cell handover. As an example, the first information may be cell switching capability information of a terminal device with low latency.

It should be appreciated that the first information may be used to indicate whether the terminal device reports to the first network device that low latency cell handover may be supported. For example, 0 may indicate that the terminal device may support cell handover with low latency. 1 may indicate that the terminal device may not support low latency cell handover.

Optionally, in some embodiments, the first information may indicate that the terminal device confirms performing the low-latency cell handover after receiving the configuration/instruction sent by the first network device to perform the low-latency cell handover.

The following describes the first information in detail, taking as an example that the first information can implicitly indicate that the terminal device desires to perform a cell handover with low latency.

Optionally, in some embodiments, the first information may indicate uplink transmission capability and/or downlink transmission capability of the terminal device. The terminal device may perform uplink transmission and/or downlink transmission according to the uplink transmission capability and/or the downlink transmission capability, respectively.

It should be understood that the terminal device may report its uplink transmission capability and/or downlink transmission capability according to its own condition. The first network device may determine whether to perform low-latency cell handover according to the transmission capability reported by the terminal device. The uplink transmission capability may be, for example, the number of radio frequency chains used for uplink transmission, the number of multiple-input multiple-output (MIMO) layers or streams used for uplink transmission, the number of MIMO ranks used for uplink transmission, or the number of ports used for uplink transmission. The uplink transmission capability may be, for example, the number of radio frequency chains used for uplink transmission, the number of multiple-input multiple-output (MIMO) layers or streams used for uplink transmission, the number of MIMO ranks used for downlink transmission, or the number of ports used for downlink transmission. It should also be understood that the uplink transmission and/or the downlink transmission performed by the terminal device according to the uplink transmission capability and/or the downlink transmission capability may be performed during the low-latency cell handover performed by the terminal device.

As an example, in this embodiment of the application, the first information may be, for example, a capability of a downlink receiving link for the terminal device to communicate with the first network device, a capability of an uplink transmitting link for the terminal device to communicate with the first network device, a capability of a downlink multi-antenna for the terminal device to communicate with the first network device, a capability of an uplink multi-antenna for the terminal device to communicate with the first network device, a capability of a downlink port for the terminal device to communicate with the first network device, or a capability of an uplink port for the terminal device to communicate with the first network device.

As another example, in this embodiment of the application, the first information may be, for example, a capability of a downlink receiving link for the terminal device to communicate with the second network device, a capability of an uplink transmitting link for the terminal device to communicate with the second network device, a capability of a downlink multi-antenna for the terminal device to communicate with the second network device, a capability of an uplink multi-antenna for the terminal device to communicate with the second network device, a capability of a downlink port for the terminal device to communicate with the second network device, or a capability of an uplink port for the terminal device to communicate with the second network device.

The second network device in the embodiment of the present application may be any network device that communicates with the terminal device. As an example, the second network device may be a target base station, e.g., when the first network device is a source base station, the second network device may be a target base station. As an example, the second network device may be a source base station, e.g., when the first network device is a target base station, the second network device may be a source base station.

The terminal device may report, to the first network device (e.g., may be a source base station), the number of uplinks and/or the number of downlinks that the terminal device may be in data link with the second network device (e.g., may be a target base station) through the first information. As an example, if the antenna of the terminal device is configured with 2 uplink transmission links and 4 downlink reception links, the terminal device may report to the source base station through the first message, and the terminal device may separate 2 downlink reception links to perform data communication with the target base station, and at the same time, may separate 2 downlink reception links to perform data communication with the source base station.

In the embodiment of the application, the terminal device may determine, through the first information, the number of uplink receiving links and the number of downlink sending links.

Optionally, in some embodiments, the first information may indicate uplink transmission capability and/or downlink transmission capability requested by the terminal device. The terminal device may perform uplink transmission and/or downlink transmission according to the requested uplink transmission capability and/or downlink transmission capability, respectively.

It should be understood that the terminal device may perform uplink transmission and/or downlink transmission according to the uplink transmission capability and/or downlink transmission capability indicated by the first network device, respectively. For uplink transmission capability and/or downlink transmission capability, reference may be made to the above description, which is not repeated herein. Optionally, in some embodiments, the terminal device may perform a low-latency cell handover procedure after receiving the second information sent by the first network device (e.g., step 220), which is described with reference to fig. 3.

Specific implementations of embodiments of the present application are described in more detail below with reference to specific examples. It should be noted that the following examples are merely provided to assist those skilled in the art in understanding the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific values or specific scenarios illustrated. It will be apparent to those skilled in the art from the examples given herein that various equivalent modifications or changes may be made, and such modifications and changes are intended to fall within the scope of the embodiments of the present application.

Fig. 4 is a schematic flow chart of a communication method of a wireless network according to another embodiment of the present application. The method of FIG. 4 may include steps 410-430, and the steps 410-430 are described in detail below.

In step 410, the terminal device sends first information to the first network device.

Step 410 corresponds to step 310, and reference may be specifically made to the description of step 310, which is not described herein again.

In step 420, the first network device sends second information to the terminal device.

The type corresponding to the second information is not specifically limited in the embodiment of the present application. As an example, the second information may explicitly instruct the terminal device to perform a low-latency cell handover, e.g., the first network device may confirm the terminal device performs the low-latency cell handover, and as another example, the first network device may configure the terminal device to perform the low-latency cell handover. As another example, the second information may implicitly indicate that the first network device instructs the terminal device to perform a low-latency cell handover, e.g., the first network device may confirm the downlink transmission capability and/or downlink transmission capability of the terminal device, e.g., the first network device may configure the downlink transmission capability and/or downlink transmission capability of the terminal device. The type corresponding to the second information will be described in detail below, and will not be described herein again.

In step 430, the terminal device performs a low-latency cell handover procedure.

In this embodiment, the terminal device may perform low-latency cell handover after receiving the second information sent by the first network device.

In the embodiment of the application, the terminal device can perform the low-delay cell switching process after receiving the information sent by the network device, so that the terminal device can be prevented from determining to perform the low-delay cell switching process according to the self condition.

The following describes in detail an example of cell handover in which the second information can explicitly instruct the terminal device to perform low latency.

Optionally, in some embodiments, the second information may confirm that the terminal device performs the low-latency cell handover request, and the terminal device may perform the low-latency cell handover procedure after receiving the confirmation information. As an example, the second information may be cell handover confirmation information with low latency performed by the terminal device.

Optionally, in some embodiments, the second information may instruct or configure the terminal device to perform low-latency cell handover, and the terminal device may perform a low-latency cell handover procedure after receiving the configuration information. As an example, the second information may be a low-latency cell handover indication or configuration information performed by the terminal device. The details will be described with reference to fig. 4 as an example.

Fig. 5 is a schematic flow chart of a communication method of a wireless network according to another embodiment of the present application. The method of FIG. 5 may include steps 510-520, and the steps 510-520 are described in detail below.

In step 510, the terminal device receives the second information sent by the first network device.

The second information in the embodiment of the present application may be used to instruct or configure the terminal device to perform cell handover with low latency.

Step 510 corresponds to step 420, and reference may be specifically made to the description of the second information in step 420, which is not described herein again.

In step 520, the terminal device performs cell handover with low latency.

The following describes in detail an example of cell handover in which the second information can implicitly instruct the terminal device to perform low latency.

Optionally, in some embodiments, the second information may confirm uplink transmission capability and/or downlink transmission capability of configuring the terminal device for low-latency cell handover.

It should be understood that, after receiving the uplink transmission capability and/or the downlink transmission capability configured by the first network device, the terminal device may perform uplink transmission and/or downlink transmission according to the uplink transmission capability and/or the downlink transmission capability, respectively.

As an example, in this embodiment of the application, the second information may be, for example, a capability of a downlink receiving link for the terminal device to communicate with the first network device, a capability of an uplink transmitting link for the terminal device to communicate with the first network device, a capability of a downlink multi-antenna for the terminal device to communicate with the first network device, a capability of an uplink multi-antenna for the terminal device to communicate with the first network device, a capability of a downlink port for the terminal device to communicate with the first network device, or a capability of an uplink port for the terminal device to communicate with the first network device.

As another example, in this embodiment of the application, the second information may be, for example, a capability of a downlink receiving link for the terminal device to communicate with the second network device, a capability of an uplink transmitting link for the terminal device to communicate with the second network device, a capability of a downlink multi-antenna for the terminal device to communicate with the second network device, a capability of an uplink multi-antenna for the terminal device to communicate with the second network device, a capability of a downlink port for the terminal device to communicate with the second network device, or a capability of an uplink port for the terminal device to communicate with the second network device.

As mentioned above, the first information may indicate that the terminal device confirms performing the cell handover with low latency after receiving the configuration/instruction sent by the first network device to perform the cell handover with low latency.

It should be understood that, in some embodiments, the terminal device may send the first information after receiving the second information sent by the first network device (step 510), and perform cell handover with low latency, which is illustrated in fig. 5, on the basis of fig. 5.

Fig. 6 is a schematic flow chart of a communication method of a wireless network according to another embodiment of the present application. The method of FIG. 6 may include steps 610-630, and the steps 610-630 are described in detail below.

In step 610, the terminal device receives the second information sent by the first network device.

In this embodiment of the present application, the second information sent by the first network device may be used to indicate that the first network device instructs or configures the terminal device to perform low-latency cell handover.

Step 610 corresponds to step 510, and reference may be specifically made to the description of the second information in step 5410, which is not described herein again.

In step 620, the terminal device sends the first information to the first network device.

In this embodiment, the first information sent by the terminal device may be used to indicate that the terminal device confirms to perform low-latency cell handover after receiving the configuration/instruction sent by the first network device to perform low-latency cell handover.

In step 630, the terminal device performs a low-latency cell handover procedure.

In this embodiment of the present application, the first information and/or the second information may be carried in Radio Resource Control (RRC) signaling or media access control element (MAC CE) signaling, which is not specifically limited in this application.

In the embodiment of the application, the terminal device may send the first information and/or receive the second information through the MAC CE. As an example, a MAC CE may be newly defined, and the first information may be reported and/or the second information may be received through the MAC CE.

In this embodiment of the application, the terminal device may send the first information and/or receive and receive the second information through the MAC CE in the LTE system, and may also send the first information and/or receive and receive the second information through the MAC CE in the NR system, which is not specifically limited in this application.

The following describes, in more detail, a specific implementation manner of transmitting the first information and/or receiving the second information through the MAC CE according to the embodiment of the present application, with reference to a specific example. It should be noted that the following examples are merely provided to assist those skilled in the art in understanding the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific values or specific scenarios illustrated. It will be apparent to those skilled in the art from the examples given herein that various equivalent modifications or changes may be made, and such modifications and changes are intended to fall within the scope of the embodiments of the present application.

Table 1 logical channel identification values for downlink shared channel

Referring to table 1, in the conventional LTE system, a logical channel identification value (value of logical channel identification for downlink shared channel, value of LCID for UL-SCH) for the downlink shared channel may be newly defined in the logical channel identification value for the downlink shared channel, and may be used to indicate the first information,

for example, an index (index)10100 may be newly added in table 1, where an index of 10100 may be used to represent a 0ms handover request (0ms handover request).

Table 2 logical channel identification values for uplink shared channel

Referring to table 2, in the existing LTE system, a logical channel identification value (value of logical channel identification for uplink shared channel, value of LCID for DL-SCH) for the uplink shared channel may be newly defined in the logical channel identification value for the uplink shared channel, and may be used to represent the first information,

for example, an index (index)10011 may be newly added to table 2, where the index of 10011 may be used to indicate a 0ms handover request (0ms handover request).

Table 3 logical channel identification values for downlink shared channel

Referring to table 3, in the conventional NR system, a logical channel identification value (value of logical channel identification for downlink shared channel, value of LCID for DL-SCH) for the downlink shared channel, in the embodiment of the present application, a signaling may be newly defined in the logical channel identification value for the downlink shared channel, and may be used to indicate the first information,

for example, an index (index)101111 may be newly added in table 3, where an index of 101111 may be used to indicate a 0ms handover request (0ms handover request).

Table 4 logical channel identification values for uplink shared channel

Referring to table 4, in the conventional NR system, a logical channel identification value (value of logical channel identification for uplink shared channel, value of LCID for DL-SCH) for the uplink shared channel, in the embodiment of the present application, a signaling may be newly defined in the logical channel identification value for the uplink shared channel, and may be used to represent the first information,

for example, an index (index)110110 may be newly added in table 4, where an index of 110110 may be used to represent a 0ms handover request (0ms handover request).

In the embodiment of the application, the terminal device may send the first information and/or receive the second information through RRC signaling. As an example, an RRC information element (RRC IE) may be newly defined, and the terminal device may report the first information and/or receive the second information through the RRC IE.

Optionally, in some embodiments, if the terminal device may send the first information on RRC signaling, the terminal device may send the first information when sending the measurement report to the first network device.

It should be understood that, when the measurement reports (measurement reports) may be measurement controls (measurement controls) issued by the terminal device according to the first network device, the terminal device may measure downlink signal parameters, signal quality, cell environment, and the like in the current sector according to the measurement tasks. The measurement report may trigger the first network device to perform a low-latency cell handover procedure.

In the embodiment of the application, the terminal device may send the first information on the signaling of the existing flow, so that the signaling can be saved.

Optionally, in some embodiments, if the terminal device may send the first information on RRC signaling, the terminal device may send the first information after sending the measurement report to the first network device.

It should be understood that the terminal device may send the first information at other times after sending the measurement report to the first network device, and this application is not limited to this specifically.

Optionally, in some embodiments, if the terminal device may receive the second information on RRC signaling, the terminal device may receive the second information on RRC connection reconfiguration signaling sent by the first network device.

It should be understood that the RRC connection reconfiguration signaling may be signaling that the first network device configures the terminal device for low-latency cell handover.

Optionally, in some embodiments, if the terminal device may receive the second information on the RRC signaling, after the terminal device may receive the second information on the RRC connection reconfiguration signaling sent by the first network device, the terminal device may perform a low-latency cell handover procedure.

Optionally, in some embodiments, if the terminal device may receive the second information on the RRC signaling, the terminal device may receive the second information on the RRC connection reconfiguration signaling sent by the first network device, and after the terminal device may send the first information through the RRC signaling or the MAC CE signaling, the cell handover procedure with low latency may be performed.

Optionally, in some embodiments, the terminal device may determine whether to trigger the low-latency cell handover procedure before sending the first information to the network device.

In the embodiment of the present application, the terminal device may determine whether a cell handover procedure with low latency is needed and/or supported according to any one of the following: the service type currently carried by the terminal equipment, the minimum number of sending links for uplink data transmission with the first network equipment, and the power control parameter of the uplink data transmission.

It should be understood that, in the embodiment of the present application, a method for determining whether a cell handover procedure with low latency is needed and/or supported is not specifically limited. As an example, the terminal device may make the determination only according to the service type of the current bearer. As another example, the terminal device may determine whether to perform the cell handover procedure with low latency by comprehensively considering at least one of the above conditions, which is not specifically limited in this application.

In the embodiment of the application, the terminal device can judge whether cell switching with low delay is needed according to the type of the current service. As an example, the terminal device may sense the type of a currently-loaded service through an application processing + MODEM (AP + MODEM) chip port, and may determine whether to trigger cell handover with low latency according to the type of the service. For example, the ordinary internet data transmission service may not pay attention to the transmission delay and handover, and the terminal device carrying the service type may not need to trigger the cell handover with low delay. For another example, in services such as online games, when delay, jitter, and zero-interrupt switching are considered, a terminal device bearing the service type needs to trigger cell switching with low delay.

In the embodiment of the application, the terminal device determines whether to support cell switching with low delay according to the minimum number of transmission links for performing uplink data transmission with the first network device and/or a power control parameter for the uplink data transmission. As an example, the terminal device may determine the minimum number of transmission links capable of uplink data transmission with the first network device according to the power control parameter and/or the path loss result of the first network device, so as to determine whether the terminal device can support cell handover with low latency.

In the embodiment of the present application, before performing a cell handover procedure with low latency, the terminal device may determine whether to need and/or support cell handover with low latency according to the type of the service being carried and the power control parameter, so as to further ensure accurate communication.

The communication method for providing the wireless network according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 6, and the communication device according to the embodiment of the present invention is described in detail below with reference to fig. 7 to 10. It is to be understood that the description of the method embodiments corresponds to the description of the communication device embodiments, and therefore reference may be made to the previous method embodiments for parts not described in detail.

Fig. 7 is a schematic block diagram of a communication device 700 of a wireless network provided by an embodiment of the present application. The communication device 700 may include:

the transceiver module 710 is configured to send first information to a first network device.

A processing module 720, configured to perform a low-latency cell handover procedure after sending the first information, where the first information is used to indicate at least one of the following: the terminal equipment requests to perform cell switching with low delay; the terminal equipment performs low-delay cell switching; the terminal equipment supports the capability of switching the low-delay cell; downlink transmission capability requested by the terminal device; a downlink transmission capability of the terminal device, where the downlink transmission capability includes a number of radio frequency chains used for downlink transmission, or a number of layers or streams of multiple-input multiple-output MIMO used for downlink transmission, or a number of multiple-input multiple-output MIMO ranks used for downlink transmission, or a number of ports used for downlink transmission; the uplink transmission capability requested by the terminal device; the terminal device includes an uplink transmission capability, where the uplink transmission capability includes a number of radio frequency chains for uplink transmission, or a number of multiple-input multiple-output MIMO layers or streams for uplink transmission, or a number of multiple-input multiple-output MIMO ranks for uplink transmission, or a number of ports for uplink transmission.

Optionally, the processing module 720 is further configured to: after receiving second information sent by the first network device, the terminal device performs a low-latency cell handover procedure, where the second information is used to indicate at least one of the following: confirming the terminal equipment to perform low-delay cell switching; configuring the terminal equipment to perform low-delay cell switching; confirming the downlink transmission capability of the terminal equipment; configuring the downlink transmission capability of the terminal device. Confirming the uplink transmission capability of the terminal equipment; and configuring the uplink transmission capability of the terminal equipment.

Optionally, the transceiver module 710 is specifically configured to: when the terminal device determines to perform cell handover with low delay according to one or more of the type of the service carried, the minimum number of transmission links for performing uplink data transmission with the first network device, and the power control parameter for the uplink data transmission, the terminal device transmits first information to the first network device.

Optionally, the processing module 720 is specifically configured to: performing downlink transmission of low-delay cell switching according to the downlink transmission capability; or the uplink transmission of the low-delay cell switching is carried out according to the uplink transmission capability.

Optionally, the first information includes at least one of the following information: cell switching request information of the terminal equipment with low delay; the low-delay cell switching capability of the terminal equipment; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the capability of a downlink receiving link for the terminal device to communicate with a second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

Optionally, the second information comprises at least one of the following information: the terminal equipment carries out cell switching confirmation information with low time delay; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the terminal device has a downlink receiving link capability for communicating with the second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

Optionally, the first information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

Optionally, the terminal device sends the first information when sending the measurement report to the first network device; or, the terminal device sends the first information after sending the measurement report to the first network device.

Optionally, the second information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

Optionally, after the terminal device receives the second information on the RRC connection reconfiguration signaling sent by the first network device, the terminal device performs a low-latency cell handover procedure, where the RRC connection reconfiguration signaling is a signaling for configuring the terminal device to perform the low-latency cell handover.

Optionally, the first network device is a source network device to which the terminal device performs handover, and the second network device is a target network device to which the terminal device performs handover, or the first network device is a target network device to which the terminal device performs handover, and the second network device is a source network device to which the terminal device performs handover.

Fig. 8 is a schematic block diagram of a communication device 800 of a wireless network provided by an embodiment of the present application. The communication device 800 may include:

the transceiver module 810 is configured to send the first information to the terminal device.

A processing module 820, configured to perform a low-latency cell handover procedure after sending the first information.

Wherein the first information is used to indicate at least one of: instructing the terminal equipment to perform low-delay cell switching; configuring the terminal equipment to perform low-delay cell switching; configuring downlink transmission capability of the terminal device, where the downlink transmission capability includes the number of radio frequency chains used by the terminal device for downlink transmission, or the number of layers or streams of multiple-input multiple-output (MIMO) used by the terminal device for downlink transmission, or the number of MIMO ranks used by the terminal device for downlink transmission, or the number of ports used by the terminal device for downlink transmission; configuring an uplink transmission capability of the terminal device, where the uplink transmission capability includes a number of radio frequency chains used by the terminal device for uplink transmission, or a number of multiple-input multiple-output (MIMO) layers or streams used by the terminal device for uplink transmission, or a number of MIMO ranks used by the terminal device for uplink transmission, or a number of ports used by the terminal device for uplink transmission.

Optionally, the processing module 820 is further configured to: after receiving second information sent by the terminal device, the first network device performs a low-latency cell handover procedure, where the second information is used for the terminal device to confirm that the first network device performs low-latency cell handover.

Optionally, the processing module 820 is specifically configured to: and carrying out downlink transmission of low-delay cell switching according to the downlink transmission capability.

Optionally, the processing module 820 is specifically configured to: and carrying out the uplink transmission of the low-delay cell switching according to the uplink transmission capability.

Optionally, the first information includes at least one of the following information: the terminal equipment carries out low-delay cell switching indication information; the terminal device has a downlink receiving link capability for communicating with the first network device; the terminal device's ability to communicate with the first network device's uplink transmission link; the terminal device has a downlink multi-antenna capability for communicating with the first network device; the terminal device has an uplink multi-antenna capability for communicating with the first network device; a downlink port capability for the terminal device to communicate with the first network device; an uplink port capability for the terminal device to communicate with the first network device; the capability of a downlink receiving link for the terminal device to communicate with a second network device; the terminal device's ability to communicate with the second network device's uplink transmission link; a downlink multi-antenna capability of the terminal device to communicate with the second network device; the terminal device has uplink multi-antenna capability for communicating with the second network device; a downlink port capability for the terminal device to communicate with the second network device; an upstream port capability for the terminal device to communicate with the second network device.

Optionally, the second information is information for confirming low-latency cell handover performed by the terminal device.

Optionally, the first indication information is carried on radio resource control, RRC, signaling and/or media access control, mac ce, signaling.

Optionally, the transceiver module 810 is specifically configured to: and sending the first information on an RRC connection reconfiguration signaling sent to the terminal equipment, wherein the RRC connection reconfiguration signaling is a signaling for configuring the terminal equipment to perform low-delay cell switching.

Optionally, the processing module 820 is specifically configured to: after receiving the second information on the RRC connection reconfiguration signaling sent by the terminal device, the first network device performs a low-latency cell handover procedure.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. As shown in fig. 9, the communication device 900 includes: one or more processors 901, one or more memories 902, one or more transceivers 903. The processor 901 is configured to control the transceiver 903 to transmit and receive signals, the memory 902 is configured to store a computer program, and the processor 901 is configured to call and execute the computer program from the memory 902, so that the communication device executes corresponding procedures and/or operations executed by the communication device in the embodiment of the transmission method of the present application.

The processor 901 may be configured to execute corresponding operations and/or functions of the processing module 720 in the communication device 700, and the transceiver 903 may be configured to execute corresponding operations and/or functions of the transceiver module 710 in the communication device 700, which is not described herein again for brevity.

Fig. 10 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application. As shown in fig. 10, the communication apparatus 1000 includes: one or more processors 1001, one or more memories 1002, one or more transceivers 1003. The processor 1001 is configured to control the transceiver 1003 to transmit and receive signals, the memory 1002 is configured to store a computer program, and the processor 1001 is configured to call and execute the computer program from the memory 1002, so that the communication device executes corresponding procedures and/or operations executed by the communication device in the embodiment of the transmission method of the present application.

The processor 1001 may be configured to execute corresponding operations and/or functions of the processing module 820 in the communication device 800, and the transceiver 1003 may be configured to execute corresponding operations and/or functions of the transceiver module 810 in the communication device 800, which is not described herein again for brevity.

An embodiment of the present application further provides a chip system, which is applied to a communication device, and the chip system includes: the chip system comprises at least one processor, at least one memory and an interface circuit, wherein the interface circuit is responsible for information interaction between the chip system and the outside, the at least one memory, the interface circuit and the at least one processor are interconnected through lines, and instructions are stored in the at least one memory; the instructions are executable by the at least one processor to perform the operations of the communication device in the methods of the various aspects described above.

An embodiment of the present application further provides a communication system, including: a communication device, and/or a network device; the communication device is the communication device according to the above aspects.

The present invention also provides a computer program product, which is applied to a communication device and includes a series of instructions, when executed, to perform the operations of the communication device in the methods of the above aspects.

Additionally, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware or any other combination. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

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 of communicating in a wireless network, the method comprising:

the terminal equipment sends first information to first network equipment;

the terminal equipment performs a low-delay cell switching process after sending the first information;

wherein the first information is used to indicate at least one of:

the downlink transmission capability requested by the terminal device,

a downlink transmission capability of the terminal device, the downlink transmission capability including a number of radio frequency chains for downlink transmission, or a number of layers or streams of multiple-input multiple-output (MIMO) for downlink transmission, or a number of MIMO ranks for downlink transmission, or a number of ports for downlink transmission,

the uplink transmission capability requested by the terminal device,

the uplink transmission capability of the terminal device includes the number of radio frequency chains used for uplink transmission, or the number of layers or streams of multiple-input multiple-output MIMO used for uplink transmission, or the number of multiple-input multiple-output MIMO ranks used for uplink transmission, or the number of ports used for uplink transmission;

the method further comprises the following steps:

after the terminal device receives second information sent by the first network device, the terminal device performs a low-latency cell handover procedure, where the second information is used to indicate at least one of the following:

confirming the terminal equipment to carry out low-delay cell switching,

configuring the terminal equipment to perform cell switching with low delay,

acknowledging the downlink transmission capability of the terminal device,

configuring the downlink transmission capability of the terminal device,

acknowledging the uplink transmission capability of the terminal device,

configuring the uplink transmission capability of the terminal device.

2. The method of claim 1, wherein the terminal device sending first information to the first network device comprises:

and when the terminal equipment determines to perform cell switching with low delay according to one or more of the loaded service type, the minimum sending link number for performing uplink data transmission with the first network equipment and the power control parameter for performing uplink data transmission, the terminal equipment sends first information to the first network equipment.

3. The method of claim 1, wherein the first information indicating a downlink transmission capability requested by the terminal device or a downlink transmission capability of the terminal device comprises:

the terminal equipment performs downlink transmission of low-delay cell switching according to the downlink transmission capability;

the first information is used for indicating the uplink transmission capability requested by the terminal device or the uplink transmission capability of the terminal device, and includes:

and the terminal equipment carries out the uplink transmission of the low-delay cell switching according to the uplink transmission capacity.

4. The method of claim 1, wherein the second information is used to confirm the downlink transmission capability of the terminal device or configure the downlink transmission capability of the terminal device, comprising:

the second information is used for confirming the downlink transmission capability of the terminal device or configuring the downlink transmission capability of the terminal device, and includes:

and the terminal equipment carries out the uplink transmission of the low-delay cell switching according to the uplink transmission capability.

5. The method of any of claims 1 to 4, wherein the first information comprises at least one of:

low latency cell handover request information for the terminal device,

a low latency cell switching capability of the terminal device,

the capability of a downlink reception link for the terminal device to communicate with the first network device,

the terminal device's ability to communicate with the first network device on an uplink,

a downlink multi-antenna capability of the terminal device to communicate with the first network device,

an uplink multi-antenna capability of the terminal device to communicate with the first network device,

a downstream port capability of the terminal device to communicate with the first network device,

an upstream port capability of the terminal device to communicate with the first network device,

the capability of a downlink reception link of the terminal device to communicate with a second network device,

the terminal device's ability to communicate with the second network device on an uplink,

a downlink multi-antenna capability of the terminal device to communicate with the second network device,

an uplink multi-antenna capability of the terminal device to communicate with the second network device,

a downstream port capability for the terminal device to communicate with the second network device,

and the terminal equipment and the second network equipment are communicated with each other.

6. The method of any of claims 1 to 4, wherein the second information comprises at least one of:

the terminal equipment carries out cell switching confirmation information with low delay,

the capability of the terminal device to communicate with the second network device on the uplink,

the terminal device's ability to communicate with a second network device for uplink multi-antennas,

a downstream port capability of the terminal device to communicate with a second network device,

7. The method according to any of claims 1 to 4, wherein the first information is carried on radio resource control, RRC, signaling and/or media Access control, MAC, element, MACCE, signaling.

8. The method of claim 7, wherein the first information is carried on the RRC signaling,

the terminal equipment sends first information to first network equipment, and the first information comprises the following steps:

the terminal equipment sends the first information when sending a measurement report to the first network equipment; or, the terminal device sends the first information after sending a measurement report to the first network device.

9. The method according to any of claims 1 to 4, wherein the second information is carried on radio resource control, RRC, signaling and/or media Access control, MAC, element, MACCE, signaling.

10. The method of claim 9, wherein the second information is carried on the RRC signaling,

after the terminal device receives the second information sent by the first network device, the terminal device performs a low-latency cell switching process, including:

after the terminal device receives the second information on the RRC connection reconfiguration signaling sent by the first network device, the terminal device performs a low-latency cell handover procedure, where the RRC connection reconfiguration signaling is a signaling for configuring the terminal device to perform low-latency cell handover.

11. The method according to any of claims 1 to 4, wherein the first network device is a source network device to which the terminal device performs handover and the second network device is a target network device to which the terminal device performs handover, or wherein the first network device is a target network device to which the terminal device performs handover and the second network device is a source network device to which the terminal device performs handover.

12. A method of communicating in a wireless network, the method comprising:

the first network equipment sends first information to the terminal equipment;

the first network equipment carries out a low-delay cell switching process after sending the first information;

wherein the first information is used to indicate at least one of:

instructing the terminal device to perform a low-latency cell handover,

configuring the terminal equipment to perform cell switching with low delay,

configuring downlink transmission capability of the terminal device, where the downlink transmission capability includes the number of radio frequency chains used by the terminal device for downlink transmission, or the number of layers or streams of multiple-input multiple-output (MIMO) used by the terminal device for downlink transmission, or the number of MIMO ranks used by the terminal device for downlink transmission, or the number of ports used by the terminal device for downlink transmission,

configuring uplink transmission capability of the terminal device, where the uplink transmission capability includes the number of radio frequency chains used by the terminal device for uplink transmission, or the number of layers or streams of multiple-input multiple-output (MIMO) used by the terminal device for uplink transmission, or the number of MIMO ranks used by the terminal device for uplink transmission, or the number of ports used by the terminal device for uplink transmission;

the method further comprises the following steps:

after the first network device receives second information sent by the terminal device, the first network device performs a low-latency cell handover process, where the second information is used for the terminal device to confirm that the first network device performs the low-latency cell handover.

13. The method of claim 12, wherein the first information is used to configure downlink transmission capabilities of the terminal device, comprising:

the first network equipment carries out downlink transmission of low-delay cell switching according to downlink transmission capacity;

the first information is used for configuring the uplink transmission capability of the terminal device, and includes:

and the first network equipment carries out the uplink transmission of the low-delay cell switching according to the uplink transmission capacity.

14. The method of claim 12 or 13, wherein the first information comprises at least one of:

the terminal equipment carries out the low-delay cell switching indication information,

15. The method of claim 12 or 13, wherein the second information is a low latency cell handover confirm message for the terminal device.

16. The method according to claim 12 or 13, wherein the first indication information is carried on radio resource control, RRC, signaling and/or media intervention control, mac, element signaling.

17. The method of claim 16, wherein the first information is carried on the RRC signaling, the first network device sending first information to a terminal device, comprising:

the first network device sends the first information on an RRC connection reconfiguration signaling sent to the terminal device, where the RRC connection reconfiguration signaling is a signaling for configuring the terminal device to perform cell handover with low latency.

18. The method according to claim 12 or 13, wherein the second information is carried on radio resource control, RRC, signaling and/or media intervention control, mac, element signaling.

19. The method of claim 18, wherein the second information is carried on the RRC signaling, and after the first network device receives the second information sent by the terminal device, the first network device performs a low-latency cell handover procedure, including:

and after the first network equipment receives the second information on the RRC connection reconfiguration signaling sent by the terminal equipment, the first network equipment carries out a low-delay cell switching process.

20. The method according to claim 12 or 13, wherein the first network device is a source network device to which the terminal device performs handover and the second network device is a target network device to which the terminal device performs handover, or wherein the first network device is a target network device to which the terminal device performs handover and the second network device is a source network device to which the terminal device performs handover.

21. A communication device of a wireless network, the communication device comprising:

at least one processor and a communication interface for the communication device to interact with other communication devices, the program instructions, when executed in the at least one processor, causing the communication device to implement the method of any one of claims 1 to 11.

22. A communication device of a wireless network, the communication device comprising:

at least one processor and a communication interface for the communication device to interact with other communication devices, the program instructions, when executed in the at least one processor, causing the communication device to implement the method of any of claims 12 to 20.