CN113747464B

CN113747464B - Unlicensed transmission method, terminal and communication device

Info

Publication number: CN113747464B
Application number: CN202010949199.8A
Authority: CN
Inventors: 庄宏成
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-05-29
Filing date: 2020-09-10
Publication date: 2024-10-29
Anticipated expiration: 2040-09-10
Also published as: WO2021238729A1; CN113747464A

Abstract

The application discloses an unauthorized transmission method, a terminal and a communication device. The method comprises the following steps: the method comprises the steps that a terminal sends first capability information to a network device, receives GF transmission parameters from the network device, and transmits GF data on GF transmission resources according to the GF transmission parameters, wherein the first capability information is used for indicating that the terminal has RIS capability, the RIS capability is used for indicating that the terminal is allowed to transmit the data through the RIS, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters comprise retransmission times of the GF data and/or MCS to be adopted for sending the GF data. Since the RIS can improve the quality of the radio link, setting the RIS at the terminal can improve the reliability of GF initial transmission. The network equipment configures GF transmission resources based on RIS capability of the terminal, does not configure more GF transmission resources, reduces collision of GF transmission resources, and can improve reliability of GF primary transmission.

Description

Unlicensed transmission method, terminal and communication device

Cross Reference to Related Applications

The present application claims priority from chinese patent office, application number 202010473565.7, application name "a data transmission method and terminal" filed on 29 th month 5 in 2020, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications technologies, and in particular, to an unlicensed transmission method, a terminal, and a communications device.

Background

In New Radio (NR) systems, grant-free (GF) transmission is proposed. In GF transmission, the network side device transmits configuration grant configuration (configured grant configuration) information for configuring several parameters of GF transmission to the terminal through radio resource control (radio resource control, RRC) signaling. For example, the configuration information is used to configure all transmission resources and transmission parameters of time domain resources, the number of repeated transmissions, etc. After receiving the configuration information, the terminal can use the configured transmission parameters to perform data transmission on the configured time-frequency resources.

If the quality of the transmission link is poor or the GF transmission resources collide, the GF transmission failure of the terminal may be caused. This requires the terminal to retransmit the data to be transmitted (which may be simply referred to as GF retransmission) to improve the performance of GF transmission. Although the performance of GF transmission can be improved by GF retransmission, the reliability of GF initial transmission cannot be ensured.

Disclosure of Invention

The application provides an unlicensed transmission method, a terminal and a communication device, which are used for improving the reliability of unlicensed primary transmission.

In a first aspect, an unlicensed transmission method is provided, which may be performed by a first communication device, which may be a communication apparatus or a communication device, such as a chip or a system-on-chip, capable of supporting the functions required for the communication apparatus to implement the method. The following describes an example of the communication device as a terminal. The method comprises the following steps:

The method comprises the steps that a terminal sends first capability information to a network device, receives GF transmission parameters from the network device, and transmits GF data on GF transmission resources according to the GF transmission parameters, wherein the first capability information is used for indicating that the terminal has RIS capability, the RIS capability is used for indicating that the terminal is allowed to transmit the data through the RIS, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters comprise retransmission times of the GF data and/or modulation and coding strategies (modulation and coding scheme, MCS) to be adopted for sending the GF data. Since the RIS can improve the quality of the radio link, setting the RIS at the terminal can improve the reliability of GF initial transmission. The network equipment configures GF transmission resources for the terminal based on the RIS capability of the terminal, does not configure more GF transmission resources for the terminal, can reduce collision of GF transmission resources, and can improve the reliability of GF primary transmission.

In one possible implementation, the first capability information includes one or more of a maximum gain of the RIS, an area of the RIS, and a number of RIS units included by the RIS. Since the RIS capabilities of different terminals may be different, the terminal may inform the network device that the terminal has its RIS capabilities, so that the network device allocates appropriate GF transmission resources for the terminal according to the RIS capabilities of the terminal.

In some embodiments, the terminal may actively inform the network device of its RIS capabilities. For example, the terminal is provided with an RIS, but the RIS fails, the terminal changes from having RIS capability to not having RIS capability, and the terminal sends second capability information to the network device, wherein the second capability information is used for indicating that the terminal does not have RIS capability; or the terminal changes from not having RIS capability to having RIS capability, and the terminal sends the first capability information to the network device.

In other embodiments, the terminal may feed back the first capability information to the network device at the request of the network device. For example, when the terminal receives an RIS capability request message from the network device, the terminal sends first capability information to the network device, where the RIS capability request message is used to request the terminal to inform whether the terminal has an RIS capability.

In one possible implementation, the number of GF transmission resources configured by the terminal is less than the number of GF transmission resources configured by a terminal that is not RIS capable. Since the network device configures fewer GF transmission resources for the RIS-capable terminals, the possibility of transmission failure due to resource collision that may be caused by multiple terminals sharing the resources may be reduced. And fewer GF transmission resources are needed, so that the transmission resources can be saved.

In one possible implementation manner, the GF transmission parameter includes a number of retransmissions of GF data to be transmitted by the terminal, where the number of retransmissions is less than a first preset value, and the first preset value is a number of retransmissions configured by the terminal that does not have RIS capability;

The GF transmission parameters comprise MCS to be adopted for transmitting the GF data, and the modulation order of the MCS is larger than a second preset value, wherein the second preset value is the modulation order of the MCS configured by the terminal without RIS capability. In the scheme, the modulation order of the MCS configured by the network equipment for the terminal with RIS capability is higher, the retransmission times are fewer, and the data transmission rate is improved on the basis of ensuring the data transmission reliability.

In the embodiment of the present application, according to the transmission rate of GF data, the terminal transmits GF on GF transmission resources according to GF transmission parameters.

The terminal transmits the GF data on the GF transmission resource according to the GF transmission parameter by using an RIS independent transmission method, where the transmission rate of the first type data is less than or equal to a first preset threshold, and the RIS independent transmission method includes the terminal coupling a signal carrying the GF data to the RIS, adjusting an amplitude and/or a phase of the RIS, and reflecting or refracting the signal to the network device by the RIS after adjusting the amplitude and/or the phase; or alternatively

The terminal transmits the GF data on the GF transmission resource according to the GF transmission parameter by using an RIS auxiliary transmission method, where the transmission rate of the GF data of the second type is greater than a first preset threshold, the RIS auxiliary transmission method includes coupling a signal carrying the GF data to the RIS by the terminal, adjusting an amplitude and/or a phase of the RIS, reflecting the signal to the network device by the RIS after adjusting the amplitude and/or the phase, and transmitting the signal carrying the GF data to the network device by the terminal after baseband processing.

In the embodiment of the application, for the GF data with larger transmission rate, the GF data can be transmitted by adopting an RIS independent transmission mode, and if the transmission rate of the GF data is smaller, the GF data can be transmitted by adopting an RIS auxiliary transmission mode. Thus, the power consumption of the terminal can be reduced as much as possible while ensuring the reliability of GF data transmission.

In a second aspect, an unlicensed transmission method is provided, which may be performed by a second communication device, which may be a communication apparatus or a communication device capable of supporting the functions required for the communication apparatus to implement the method, such as a chip or a chip system. The following describes an example in which the communication device is a network device. The method comprises the following steps:

The network equipment receives first capability information from a terminal and sends GF (media field) transmission parameters to the terminal, wherein the first capability information is used for indicating that the terminal has RIS (radio frequency identification) capability, the RIS capability is used for indicating that the terminal is allowed to transmit data through RIS, the terminal has RIS capability, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters comprise retransmission times of GF data and/or MCS (modulation scheme) adopted for sending the GF data.

In one possible implementation, the first capability information includes one or more of a maximum gain of the RIS, an area of the RIS, and a number of RIS units included by the RIS.

In one possible implementation, the number of GF transmission resources configured by the network device for the RIS-capable terminal is less than the number of GF transmission resources configured by the network device for the terminal that is not RIS-capable.

The GF transmission parameters comprise MCS to be adopted for transmitting the GF data, and the modulation order of the MCS is larger than a second preset value, wherein the second preset value is the modulation order of the MCS configured by the terminal without RIS capability. The number of retransmission times configured by the network equipment for the terminal with RIS capability is smaller than the number of retransmission times configured by the network equipment for the terminal without RIS capability; the adjustment order of the MCS configured by the network device for the RIS capable terminal is greater than the adjustment order of the MCS configured by the network device for the non-RIS capable terminal.

In one possible implementation, the number of retransmissions configured by the network device for the first terminal is smaller than the number of retransmissions configured by the network device for the second terminal, the first terminal having RIS capability, the second terminal having RIS capability,

The RIS maximum gain of the first terminal is greater than the RIS maximum gain of the second terminal; or alternatively

The RIS maximum gain of the first terminal is equal to the RIS maximum gain of the second terminal, and the RIS area of the first terminal is larger than the RIS area of the second terminal; or alternatively

The RIS maximum gain of the first terminal is equal to the RIS maximum gain of the second terminal, the RIS area of the first terminal is equal to the RIS area of the second terminal, and the RIS unit number of the first terminal is greater than the RIS unit number of the second terminal.

In a third aspect, embodiments of the present application provide a communication device, which may be a terminal or a communication device capable of supporting a function required by the terminal to implement the method, such as a chip or a chip system. The functions may be implemented in hardware, or may be implemented by executing corresponding software in hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the communication device includes a processor, a RIS, and a transceiver;

The transceiver is configured to send first capability information to a network device, and receive an unlicensed GF transmission parameter from the network device, and send the GF transmission parameter to the processor, where the first capability information is configured to indicate that the terminal has RIS capability, and the RIS capability is configured to indicate that the terminal is allowed to transmit data through the RIS;

The processor is used for obtaining GF data, processing the GF data on GF transmission resources according to the GF transmission parameters and generating a first transmission signal;

the RIS is configured to obtain the first transmission signal, and reflect or refract the first transmission signal, so that a beam of the first transmission signal is directed to a network device.

In a possible implementation manner, the processor is further configured to generate a first control signal, and output the first control signal to the RIS, where the first control signal is used to adjust a phase and/or an amplitude of the RIS.

In one possible implementation, the processor includes a first data processing module and a RIS control module, where the RIS control module is configured to generate the first control signal.

In one possible implementation, the processor further includes a second data processing module, where the second data processing module is configured to obtain GF data, process the GF data on GF transmission resources according to the GF transmission parameter, generate a second transmission signal, and send the second transmission signal to the transceiver.

In a possible implementation manner, if the GF data is first type data, the first data processing module obtains the GF data, where a transmission rate of the first type data is less than or equal to a first preset threshold;

And if the GF data is the second type data, the second data processing module acquires the GF data, wherein the transmission rate of the second type data is larger than the first preset threshold value.

In one possible implementation manner, the transceiver includes a radio frequency integrated circuit, a radio frequency front end module and an antenna, wherein the radio frequency integrated circuit is connected with the second data processing module and is used for sending the second transmission signal to the radio frequency front end module;

the radio frequency front end module is connected with the radio frequency integrated circuit and used for sending the second transmission signal to the RIS and/or the antenna.

In one possible implementation, the transceiver includes: the second transmission signal is transmitted to the antenna via the radio frequency integrated circuit and the radio frequency front end module, and the antenna is used for coupling the second transmission signal to the RIS.

In one possible implementation manner, the transceiver further includes a switch, one end of the radio frequency integrated circuit is connected to the second data processing module, the other end of the radio frequency integrated circuit is connected to the radio frequency front end module, and the first end of the radio frequency front end module is connected to the radio frequency integrated circuit; the second end of the radio frequency front end module is connected with the antenna, and the third end of the radio frequency front end module is connected with the RIS through the switch;

The switch is used for controlling the passage between the radio frequency front end module and the RIS to be in an open state or a disconnection state; when the switch controls the access between the radio frequency front end module and the RIS to be in an open state, the radio frequency integrated circuit sends the second transmission signal to the radio frequency front end module; the radio frequency front end module is used for sending the second transmission signal to the RIS and the antenna; when the switch controls the access between the radio frequency front end module and the RIS to be in a disconnected state, the second transmission signal is sent to the antenna through the radio frequency integrated circuit and the radio frequency front end module; the antenna is for coupling the second transmission signal to the RIS.

In a possible implementation manner, the GF data is the second type data, and the processor is further configured to generate a second control signal, where the second control signal is configured to control the switch to open a path between the radio frequency front end module and the RIS; or alternatively

The GF data is the second type data, and the processor is further configured to generate a third control signal, where the third control signal is configured to control the switch to disconnect a path between the rf front-end module and the RIS.

In a fourth aspect, embodiments of the present application provide a communication apparatus, which may be a network device or a communication apparatus capable of supporting functions required by the network device to implement the method, such as a chip or a chip system. The functions may be implemented in hardware, or may be implemented by executing corresponding software in hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the communication device includes a transceiver module and a processing module, where the transceiver module is configured to receive first capability information from a terminal, the first capability information being configured to indicate that the terminal has RIS capability, the RIS capability being configured to indicate that the terminal is allowed to transmit data through the RIS;

the receiving and transmitting module is further configured to send the GF transmission parameter determined by the processing module to the terminal, where the terminal has RIS capability, the GF transmission parameter is configured according to the RIS capability of the terminal, and the GF transmission parameter includes a retransmission number of GF data and/or an MCS to be used for sending GF data.

In a possible implementation manner, the GF transmission parameter includes a number of retransmissions of GF data, where the number of retransmissions is less than a first preset value, and the first preset value is a number of retransmissions configured by a terminal that does not have RIS capability;

The GF transmission parameters include an MCS to be used for transmitting the GF data, and the modulation order of the MCS is greater than a second preset value, which is a modulation order of an MCS configured by a terminal having no RIS capability.

In one possible implementation, the number of GF transmission resources configured by the processing module for the terminal is less than the number of GF transmission resources configured for a terminal that is not RIS capable.

In one possible implementation, the number of retransmissions configured by the processing module for a first terminal is smaller than the number of retransmissions configured by the processing module for a second terminal, the first terminal having RIS capability, the second terminal having RIS capability, wherein,

The RIS maximum gain of the first terminal is equal to the RIS maximum gain of the second terminal, the RIS area of the first terminal is equal to the RIS area of the second terminal, and the RIS unit number of the first terminal is larger than the RIS unit number of the second terminal.

The processing module in the fourth aspect may perform the corresponding functions in the foregoing second aspect and/or the method examples in the second aspect, and specific reference is made to the detailed description in the method examples, which are not repeated herein.

In a fifth aspect, embodiments of the present application provide a communication device, which may be the communication device in the third aspect or the fourth aspect of the above embodiments, or a chip system provided in the communication device in the third aspect or the fourth aspect. The communication device comprises a communication interface and a processor, and optionally a memory. The memory is used for storing computer programs or instructions or data, and the processor is coupled with the memory and the communication interface, when the processor reads the computer programs or instructions or data, the communication device executes the method executed by the terminal or the network device in the embodiment of the method.

In a sixth aspect, embodiments of the present application provide a chip system, which includes a processor, and may further include a memory and/or a communication interface, for implementing the method described in the first aspect or the second aspect. In one possible implementation, the chip system further includes a memory for storing program instructions and/or data. The chip system may be formed of a chip or may include a chip and other discrete devices.

In a seventh aspect, an embodiment of the present application provides a communication system, including the communication apparatus according to the third aspect and the communication apparatus according to the fourth aspect; or the communication system comprises the communication device according to the third aspect and the communication device according to one possible design of the fourth aspect; or the communication system comprises a communication device in one possible design of the third aspect and a communication device according to the fourth aspect.

In an eighth aspect, the present application provides a computer readable storage medium storing a computer program which, when executed, implements the method of the first or second aspects described above.

In a ninth aspect, there is provided a computer program product comprising: computer program code which, when run, causes the method of the first or second aspect described above to be performed.

Advantageous effects of the fifth to ninth aspects and the implementation manners thereof described above may be referred to the description of the advantageous effects of the respective aspects or the respective aspects and the implementation manners thereof.

Drawings

Fig. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applicable;

FIG. 2 is a schematic diagram of the working principle of the RIS according to the embodiment of the present application;

fig. 3 is a flow chart of an unlicensed transmission method according to an embodiment of the present application;

Fig. 4 is a flowchart of configuring GF transmission resources and GF transmission parameters for a terminal according to first capability information according to an embodiment of the present application;

Fig. 5 is a schematic flow chart of a terminal transmitting GF data according to an embodiment of the present application;

fig. 6A is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 6B is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another communication device according to an embodiment of the present application;

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

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

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

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

Detailed Description

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

In NR systems GF transmission is proposed. In GF transmission, the resources that the terminal can use are preconfigured, and when the terminal needs to send data, it is not necessary to send an uplink scheduling request for requesting to allocate resources to the network side device, so delay and signaling overhead can be reduced. Specifically, the network side device sends configured authorization configuration information to the terminal through RRC signaling, where the configuration information is used to configure a number of parameters of GF transmission. For example, the configuration information is used to configure all transmission resources and transmission parameters such as time-frequency resources, and the value of the number of repeated transmissions K. The configuration time-frequency resource includes a period of configuring the time-frequency resource, and a position of a time domain resource and/or a frequency domain resource to be used by the terminal within one period, and the like. It should be understood that the reliability of data transmission performed by the terminal once is low, so that the data transmission can be repeated for multiple times to improve the success rate of the data transmission. After receiving the configuration information, the terminal can perform data transmission on the configured GF time-frequency resource according to the configured transmission parameters.

However, the quality of GF transmission depends on the quality of the transmission link and the collision degree of GF transmission resources, and if the quality of the transmission link is poor or GF transmission resources collide, the GF transmission of the terminal may fail. This requires the terminal to retransmit the data to be transmitted (which may be simply referred to as GF retransmission) to improve the performance of GF transmission. For example, the terminal may perform GF retransmission on a time-frequency resource after random backoff, or the terminal may perform GF retransmission on a space-frequency resource after random backoff. Illustratively, the terminal performs GF retransmission on the original hybrid automatic repeat request (hybrid automatic retransmission request, HARQ) resources, or the terminal performs GF retransmission on other HARQ resources. For example, the network side device maps the conflicted terminal to other HARQ resources of the current or other access areas according to the current state (for example, the situation that the activated users are distributed in each access area), and informs the mapping rule from the terminal to the other HARQ resources through high-level signaling, so that the terminal performs GF retransmission on the other HARQ resources. The terminal performs GF retransmission on the original multi-antenna resource (space frequency resource) after random backoff, or performs GF retransmission on other multi-antenna resources in the current access area or other resources in the access area of other multi-antenna resources according to the multi-antenna resource remapping rule notified by the network side device.

Although the performance of GF transmission can be improved by GF retransmission, the reliability of GF initial transmission cannot be ensured. In view of this, it is possible to provide a device for controlling the flow of liquid. The embodiment of the application provides a GF transmission method, which is used for improving the reliability of GF primary transmission.

The technical scheme provided by the embodiment of the application can be applied to a long term evolution (long term evolution, LTE) system supporting unlicensed transmission, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD), a universal mobile telecommunication system (universal mobile telecommunication system, UMTS), a worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, a New Radio (NR) communication system and the like. Of course, the technical solution provided by the embodiment of the present application may also be applied to a machine-to-machine (machine to machine, M2M) network, an internet of things (internet of things, ioT) network, or other networks. But also to inter-device links, such as device-to-device (D2D) links. The D2D link may also be referred to as a sidelink, wherein the sidelink may also be referred to as a side link or a sidelink, etc. In the embodiment of the present application, the above terms refer to links established between devices of the same type, and the meanings of the links are the same. The same type of device may be a link between terminals, a link between base stations, a link between relay nodes, or the like, which is not limited in the embodiment of the present application.

Please refer to fig. 1, which is an application scenario applied in the embodiment of the present application, or a network architecture applied in the embodiment of the present application. In fig. 1, a network device and 6 terminals are included, terminal 1, terminal 2, terminal 3, terminal 4, terminal 5 and terminal 6. It should be understood that the number of terminals in fig. 1 is by way of example only, and that more or fewer may be provided, and that the network architecture may include other network devices, such as wireless relay devices and wireless backhaul devices, not shown in fig. 1. The network device is an access device of the terminal through the wireless access network, and may be a base station.

The network device is an entity in the network side for transmitting or receiving signals, such as a new generation base station (generation Node B, gNodeB). The network device may be a device for communicating with a mobile device. The network devices may be APs in a wireless local area network (wireless local area networks, WLAN), evolved base stations (evolutional Node B, enbs or enodebs) in long term evolution (long term evolution, LTE), or may also include next generation node bs (next generation node B, gNB) in a 5G NR system, or relay stations or access points, or on-board devices, wearable devices, and network devices in future 5G networks or network devices in future evolved public land mobile network (public land mobile network, PLMN) networks, or gNodeB/gNB in NR systems, etc. The following takes an example in which the network device is a gNB.

The gNB may include an antenna, a baseband unit (BBU) and a remote radio unit (remote radio unit, RRU). Wherein the BBU can be connected with the RRU through a public wireless interface (common public radio interface, CPRI) or enhanced CPRI (ENHANCE CPRI, ECPRI) and the like, and the RRU can be connected with the antenna through a feeder line. The antenna may be a passive antenna, separate from the RRU, which may be connected by a cable. Or the antenna may be an active antenna unit (ACTIVE ANTENNA unit, AAU), i.e. the antenna unit of the AAU and the RRU are integrated together. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna.

In some deployments, the gNB may include a centralized unit (centralized unit, CU) and a separate unit (DU). CU implements part of the functions of the gNB, and DU implements part of the functions of the gNB, for example, DU may be used to implement transceiving of radio frequency signals, conversion of radio frequency signals and baseband signals, and part of baseband processing. CU may be used for baseband processing, control of the base station, etc. In some embodiments, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (PACKET DATA convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC) layer, medium access control (medium access control, MAC) layer, and Physical (PHY) layer. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by DUs or by DUs and AAUs. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which the present application is not limited to.

A terminal, also referred to as a terminal device, may be a wireless terminal device capable of receiving network device schedules and indications, which may be a device providing voice and/or data connectivity to a user, or a handheld device having wireless connectivity functionality, or other processing device connected to a wireless modem. The wireless terminal device may communicate with one or more core networks or the internet via a radio access network (e.g., radio access network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones), computers and data cards, which may be portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices, for example, that exchange voice and/or data with the radio access network. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal Digital Assistants (PDAs), tablet computers (Pad), computers with wireless transceiver capabilities, and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile Station (MS), remote station (remote station), access Point (AP), remote terminal device (remote terminal), access terminal device (ACCESS TERMINAL), user terminal device (user terminal), user agent (user agent), subscriber station (subscriber station, SS), user terminal device (customer premises equipment, CPE), terminal (terminal), user Equipment (UE), mobile Terminal (MT), etc. The wireless terminal device may also be a wearable device as well as a next generation communication system, e.g. a terminal in a 5G network or a terminal in a future evolved public land mobile network (public land mobile network, PLMN) network, a terminal in an NR communication system, etc.

The embodiment of the application can be suitable for uplink signal transmission and also suitable for D2D signal transmission. For uplink signal transmission, the sending device is a terminal, and the corresponding receiving device is a network device; for D2D signal transmission, the transmitting device is a terminal and the receiving device is a terminal. For example, 3 terminals as illustrated in the dashed area of fig. 1 may be suitable for D2D signal transmission, and the direction of signal transmission is not limited in the embodiment of the present application.

Generally, poor quality of the transmission link or collision of GF transmission resources may cause failure of GF transmission by the terminal. This requires the terminal to retransmit the data to be transmitted (which may be simply referred to as GF retransmission) to improve the performance of GF transmission. Although the performance of GF transmission can be improved by GF retransmission, the reliability of GF initial transmission cannot be ensured.

In view of this, in the embodiment of the present application, a Reconfigurable Intelligent Surface (RIS) may be provided at the terminal, and since the RIS may improve coverage of the wireless network, the quality of the transmission link may be improved, thereby improving reliability of GF primary transmission. In addition, the network equipment can configure GF transmission resources based on RIS capability of the terminal, so that collision of GF transmission resources can be reduced, and the reliability of GF primary transmission is further improved.

It should be understood that RIS is a digitally reconfigurable artificial electromagnetic surface, an artificial composite structure formed by a large number of sub-wavelength digitally reconfigurable artificial electromagnetic units in a macroscopic arrangement (periodic or non-periodic). Because the basic units and the arrangement modes can be designed at will, the limit that the traditional material is difficult to control accurately in an atomic or molecular level can be broken through, and the ultra-conventional medium parameters which cannot be realized by the traditional material and the traditional technology, such as medium parameters comprising positive dielectric constant and negative dielectric constant, are constructed. Materials with supernormal medium parameters may be referred to as superstructured materials, which may also be referred to as digital electromagnetic metamaterials or electromagnetic encoding metamaterials in some embodiments, since they are based on controlling electromagnetic waves by changing the spatial arrangement of the digital encoding units, i.e. the properties of the electromagnetic field at specific spatial locations may be controlled by changing the state distribution of the base units.

For example, please refer to fig. 2, which is a schematic diagram of the operation principle of the RIS. As shown in FIG. 2, the RIS comprises a plurality of RIS units, and different RIS units are connected through diodes, such as PIN diodes, varactors, and the like. The RIS may reflect the received radio waves. It will be appreciated that the RIS may change the reflected phase difference of a radio wave as it propagates from one medium to another medium having a different refractive index, as refraction occurs in addition to reflection. It is also understood that RIS causes the radio wave to follow the generalized snell's law at the reflective or refractive interface. That is, the RIS may be such that the reflection angle of the radio wave may not be equal to the angle of incidence. As shown in fig. 2, the RIS can make the reflection angle of the radio wave be the reflection angle 2, with respect to the conventional surface (the reflection angle of the radio wave is the reflection angle 1). RIS has the ability to shape radio waves according to the generalized Snell's law relative to conventional surfaces.

Specifically, the RIS units are controlled to adjust the amplitude and/or phase of the received signal, and the reflection coefficient of each RIS unit can be controlled. The adjustment of the amplitude and/or phase of the received signal by the RIS unit can also be considered as adjusting the amplitude and/or phase of the RIS unit. It will be appreciated that the reflection coefficient of each RIS unit is different, as is the reflection or refraction angle of the radio wave. That is, the multiple RIS units are controlled to adjust the amplitude and/or phase of the received signal, respectively, and the reflection angle or refraction angle of the radio wave by the RIS can be adjusted, so that fine three-dimensional (3D) passive beam forming for directional signal enhancement or nulling is cooperatively realized.

In some embodiments, the RIS unit may be controlled to adjust the amplitude and/or phase of the received signal by controlling the on-off state (on-state or off-state) of a PIN diode connected to the RIS unit. The RIS unit to which the PIN diode is connected is placed in an on-state or an off-state, for example, by applying different biases to the PIN diode. The RIS comprises a plurality of RIS units in different states, and the RIS has different adjustment amounts on the amplitude and/or the phase of the received signal, so that the reflection coefficients of the RIS are also all different. The adjustment of the amplitude and/or phase of the received signal by the RIS module can be controlled by controlling the state of the RIS unit, for example such that the reflection phases of the RIS to the radio waves differ by 180 °, thereby controlling the reflection coefficient of the RIS. This makes it possible to achieve directional beam forming such that the reflection angle of the radio wave by the RIS is not equal to the incident angle. Different reflection angles of RIS to radio waves lead to different beam directions, so that the coverage and system capacity of a wireless network can be improved, and the RIS can be widely applied to communication systems. For example, in the embodiment of the present application, an RIS may be set in the terminal, and a communication service is implemented using the RIS.

The method for unlicensed transmission provided by the embodiment of the application is described below with reference to the accompanying drawings.

In the following description, this method is taken as an example applied to the network architecture shown in fig. 1. In addition, the method may be performed by two communication devices, for example, a first communication device and a second communication device, where the first communication device may be a terminal or a communication device capable of supporting a function required by the terminal to implement the method, or the first communication device may be a network apparatus or a communication device capable of supporting a function required by the network apparatus to implement the method, and of course, may also be other communication devices, such as a chip or a chip system. The same applies to the second communication device, which may be a network appliance or a communication device capable of supporting the functions required by the network appliance to implement the method, or the second communication device may be a terminal or a communication device capable of supporting the functions required by the terminal to implement the method, but may also be other communication devices, such as a chip or a chip system. And the implementation manner of the first communication apparatus and the second communication apparatus is not limited, for example, the first communication apparatus may be a network device, the second communication apparatus may be a terminal, or the first communication apparatus is a terminal, the second communication apparatus is a network device, or the first communication apparatus is a network device, and the second communication apparatus is a communication apparatus capable of supporting a function required by the terminal to implement the method, and so on.

For convenience of description, hereinafter, the method is exemplified by the terminal and the base station, that is, the first communication apparatus is the base station and the second communication apparatus is the terminal. Since the application of the technical solution provided in this embodiment to the network architecture shown in fig. 1 is taken as an example herein, the terminal described below may be a terminal in the network architecture shown in fig. 1, and the base station described below may be a network device in the network architecture shown in fig. 1. When the method is applied to other network architectures, the understanding of the base station and the terminal may refer to the description of applying the method to the network architecture shown in fig. 1, and will not be repeated herein. The embodiment of the application can be suitable for the transmission of low-delay high-reliability service, such as the transmission of high-reliability low-delay communication (ultra-reliable and low latency communications, uRLLC) service. The embodiments of the present application are applicable to GF transmission mechanisms, and may be applicable to other possible transmission mechanisms, and in the following description, GF transmission between a terminal and a base station is taken as an example.

Referring to fig. 3, a flow chart of an unlicensed transmission method according to an embodiment of the present application is described below.

S301, the terminal sends first capability information of the terminal to the base station, wherein the first capability information is used for indicating whether the terminal allows data transmission through RIS.

In the embodiment of the present application, the first capability information is used to indicate whether the terminal allows data transmission through the RIS, and the terminal provided with the RIS generally allows data transmission through the RIS, and the terminal without the RIS cannot naturally transmit data through the RIS. Allowing data to be transmitted over the RIS may also be considered to be RIS capable, so in some embodiments the first capability information may also be used to indicate whether the terminal is RIS capable, referred to as RIS capability information. It should be understood that a terminal provided with an RIS has RIS capabilities and that if a certain terminal is not provided with an RIS, the terminal is not provided with RIS capabilities.

The embodiment of the application aims to improve the reliability of GF initial transmission, and for this reason, the embodiment of the application can set RIS at the terminal, and the base station can allocate GF transmission resources and set GF transmission parameters for the terminal according to the RIS capability of the terminal so as to improve the reliability of GF initial transmission. However, for a certain communication system, such as the network architecture shown in fig. 1, some terminals may have RIS set, some terminals may not have RIS set, and the base station does not know which terminals have RIS capability. In a possible implementation, the terminal may send first capability information of the terminal to the base station, where the first capability information may be used to indicate whether the terminal has RIS capability. Therefore, the base station can determine whether the terminal has RIS capability according to the received first capability information, further determine how to allocate GF transmission resources to the terminal according to the determination result, reduce collision of GF transmission resources of a plurality of terminals as much as possible, and improve the reliability of GF primary transmission.

In the embodiment of the application, the terminal can actively inform the base station of the first capability information of the terminal, and can also send the first capability information to the base station according to the request of the base station. The terminal sends the first capability information to the base station under the request of the base station, for example, the base station sends an RIS capability request message to the terminal, where the RIS capability request message is used to instruct the terminal to report the first capability information of the terminal to the base station. For example, the terminal may actively transmit the first capability information to the base station. It is considered that although the terminal is provided with the RIS, there is a possibility that the RIS malfunctions, resulting in that the terminal provided with the RIS does not have the RIS capability. Or a faulty RIS in the terminal, the terminal is provided with RIS capabilities by replacing the RIS or the like. The terminal may transmit the first capability information to the base station at the time of the update of the first capability information. For example, the terminal initially does not have RIS capability, after which the terminal has RIS capability, i.e. the terminal never has RIS capability to its capability, the terminal sends the first capability information to the base station.

The embodiment of the application does not limit the implementation form of the first capability information, and in a possible implementation manner, the first capability information can be carried on one or more fields of the existing signaling, so that the compatibility with the existing signaling is facilitated. For example, the first capability information is carried in radio resource control (radio resource control, RRC) signaling, medium access control element (MEDIA ACCESS control control element, MAC CE) signaling, uplink control information (uplink control information, UCI) signaling, etc. The one or more fields may be a RRC signaling defined field, a MAC CE signaling defined field, or a UCI signaling defined field, or may be a newly defined RRC field, a MAC CE field, or a UCI field. The embodiments of the present application are not limited in this regard. For example, in some embodiments, the first capability information may also be carried in newly defined signaling, in other embodiments, the first capability information may be carried in the same signaling as the capability information of the terminal, i.e. signaling for carrying the capability information of the terminal is followed. For example, the first capability information and the capability information of the terminal are respectively carried on different fields of the signaling. For another example, the first capability information and the capability information of the terminal are carried in the same field of the signaling.

For example, the first capability information may be carried in a first field of RRC signaling, which may occupy 1bit (bit), if the first field carries "0" indicating that the terminal has RIS capability, and correspondingly, the first field carries "1" indicating that the terminal does not have RIS capability. Or the first field carrying "1" indicates that the terminal has RIS capability, and correspondingly, the first field carrying "0" indicates that the terminal does not have RIS capability.

For example, the first capability information may include parameters for indicating RIS capability, such as one or more of a maximum gain of the RIS, an area size of the RIS, and a number of RIS units included by the RIS. It will be appreciated that the greater the RIS maximum gain set by a terminal, the greater the terminal's ability to reflect or refract signals. If the RIS maximum gain is the same for multiple terminals, the larger the RIS area the more the terminals will be able to reflect or refract the signal. If the RIS maximum gain is the same for a plurality of terminals and the RIS areas are the same for the plurality of terminals, the greater the number of RIS units the greater the ability of the terminals to reflect or refract the signal. The first capability information may be carried in one field or a plurality of fields if the first capability information includes a plurality of the RIS maximum gain, the size of the area of the RIS, and the number of RIS units. For example, the first capability information is carried on RRC signaling that includes a first field on which the first capability information is carried. For example, the first capability information includes an RIS maximum gain, an area size of an RIS, and a number of RIS units, and then the RRC signaling may include a first field, a second field, and a third field, where the RIS maximum gain is carried in the first field, the area size of the RIS is carried in the second field, and the number of RIS units is carried in the third field. The terminal may default to have RIS capabilities if the first capability information includes the RIS capability parameter.

The implementation form of the first capability information may also be a combination of the two examples. I.e. the first indication information comprises both parameters for indicating RIS capabilities and 1bit information for indicating whether the terminal is RIS capable. In this implementation, if the RIS of the terminal fails, even if the first indication information includes parameters of the RIS capability, it can be determined that the terminal does not have the RIS capability through the 1bit information.

In the embodiment of the application, the base station can configure GF transmission resources and GF transmission parameters for the terminal according to the first capability information of the terminal. And the terminal performs GF transmission on GF transmission resources configured by the base station. The following describes how the base station configures GF transmission resources and GF transmission parameters for the terminal according to whether the terminal has the first capability information.

S302, the base station configures GF transmission resources and GF transmission parameters for the terminal according to the first capability information.

In general, in order to reduce the possibility of transmission failure due to resource collision that may be caused by sharing resources by a plurality of terminals, a base station may allocate a plurality of GF transmission resources to the terminals. One base station can access a plurality of terminals, and if a plurality of GF transmission resources are respectively configured for each terminal, more GF transmission resources are needed. In some embodiments, the base station may allocate multiple GF transmission resources for multiple terminals to conserve resources. For example, a plurality of terminals accessing to the base station may be divided into a plurality of terminal groups, and the base station may allocate a plurality of GF transmission resources to each group of terminals according to the number of terminal groups and the number of terminals included in each terminal group. Allocating multiple GF transmission resources for each group of terminals may save resources as compared to allocating multiple GH transmission resources for each terminal. However, a plurality of GF transmission resources are allocated to each group of terminals, and the GF transmission resources are still required.

In particular, referring to fig. 4, a detailed flow of the base station configuring GF transmission resources and GF transmission parameters for the terminal according to the first capability information is shown.

S401, the base station determines whether the terminal has RIS capability.

S402, the base station determines that the terminal has RIS capability, and the base station configures a single transmission resource for the terminal.

S403, the base station determines that the terminal does not have RIS capability, and the base station configures a plurality of transmission resources for the terminal.

Because RIS can improve wireless transmission quality, so the terminal that sets up RIS transmits data through RIS, can improve the success rate of data transmission, so the basic station can dispose fewer GF transmission resources for the terminal that sets up RIS. If the base station receives the first capability information from the terminal indicating that the terminal is RIS capable, the base station may configure less GF transmission resources for the terminal. For example, the base station configures a single GF transmission resource for the terminal, which requires relatively fewer GF transmission resources, thereby saving transmission resources. Since the base station configures a single GF transmission resource for the terminal, the possibility of transmission failure due to resource collision that may be caused by sharing the resource by a plurality of terminals can be reduced. It should be understood that the number of GF transmission resources configured by the base station for terminals with RIS capability is less than the number of GF transmission resources configured by the base station for terminals without RIS capability. For example, the base station configures M GF transmission resources for terminals that do not have RIS capability, and the base station configures N GF transmission resources for terminals that do have RIS capability, where N is less than or equal to M.

Similarly, the base station may configure GF transmission parameters, such as retransmission times, MCS, etc., for the terminal according to the first capability information. Specifically, the number of retransmissions configured by the base station for terminals with RIS capability is smaller than the number of retransmissions configured by the base station for terminals without RIS capability. The value of the modulation and coding strategy (modulation and coding scheme, MCS) parameter configured by the base station for the RIS capable terminal is greater than the value of the MCS parameter configured by the base station for the terminal without RIS capability. For example, MCS configured by the base station for a terminal without RIS capability is Quadrature Phase Shift Keying (QPSK), and MCS configured by the base station for a terminal with RIS capability is 16 quadrature amplitude modulation (quadrature amplitude modulation, QAM).

S404, the base station determines whether RIS capability of the terminal is larger than a preset threshold;

s405, the base station determines that RIS capability of the terminal is greater than or equal to a preset threshold, and the base station configures fewer GF retransmission times for the terminal;

s406, the base station determines that RIS capability of the terminal is smaller than a preset threshold, and configures more GF retransmission times for the terminal.

Further, although the terminals have RIS capability, the maximum RIS capability that different terminals have may be different, so the strength of the signals forwarded by the terminals through the RIS may also be different. Based on this, in some embodiments, the base station may further determine, according to the RIS capability size of the terminal, the number of GF transmission resources configured for the terminal. For example, the terminal has an RIS capability, but the RIS capability is weak, for example, the RIS capability is less than or equal to the first preset threshold, then M1 GF transmission resources may be configured for the terminal. In contrast, if the RIS capability is strong, e.g., the RIS capability is greater than a first preset threshold, then M2 GF transmission resources may be configured for the terminal, with the understanding that M2 is less than or equal to M1. I.e. the stronger the RIS capability, the fewer GF transmission resources the base station configures for the terminal. In other words, the GF transmission resources configured by the base station for the terminal having the RIS capability is less than the number of GF transmission resources configured by the base station for the terminal having no RIS capability. The number of GF transmission resources configured by the base station for the terminal with stronger RIS capability is smaller than the number of GF transmission resources configured by the base station for the terminal with weaker RIS capability.

In some embodiments, the RIS capability size may be characterized by an RIS gain, by an RIS area size, or by the number of RIS units. For example, the RIS gain is mdB, then the RIS capability size is mdB; or the RIS area is m square millimeters, then the RIS capacity size is m square millimeters; or the number of RIS units is m, then the RIS capability size is m. Correspondingly, if the RIS capability size is characterized by an RIS gain, the first preset threshold is a gain threshold; if the RIS capability size is characterized by a RIS area size, the first preset threshold is an area threshold; if the RIS capability size is characterized by the RIS unit number, the first preset threshold is the RIS unit number threshold.

In other embodiments, the RIS area size or RIS cell number may also be quantized to a RIS gain, with the RIS capability size being characterized by the RIS gain. For example, the RIS area size is m square millimeters, the corresponding RIS gain is m1dB, and then the RIS capability size is m1dB. The number of RIS units is m, the corresponding RIS gain is m2dB, and then the RIS capability is m2dB.

Similarly, the base station may configure GF transmission parameters for the terminal according to the size of the RIS capability. The stronger the RIS capability, the fewer the number of retransmissions the base station configures for the terminal, and the smaller the modulation order of the MCS the base station configures for the terminal. For example, the number of retransmissions configured by the base station for terminals with stronger RIS capability is less than the number of retransmissions configured by the base station for terminals with weaker RIS capability. Illustratively, the RIS capability of the terminal is greater than a second predetermined threshold, the base station configures the terminal with a first value for the number of retransmissions, the RIS capability of the terminal is smaller than or equal to a second preset threshold, the value of the retransmission times configured by the base station for the terminal is a second value, and the first value is smaller than or equal to the second value. For another example, the base station configures a larger MCS for terminals with stronger RIS capabilities and the base station configures a smaller MCS for terminals with weaker RIS capabilities. Illustratively, the terminal's RIS capability is greater than a first preset threshold, the modulation order of the MCS configured by the base station for the terminal is a first order, the RIS capability of the terminal is smaller than or equal to a first preset threshold, the modulation order of the MCS configured by the base station for the terminal is a second order, and the first order is larger than the second order. Thus, the data transmission rate can be improved on the basis of ensuring the data transmission reliability.

In the embodiment of the application, the base station can determine the size of the RIS capability of the terminal according to the first capability information, namely, the base station determines the RIS capability size according to one or more of the RIS maximum gain, the RIS area and the RIS unit number of the terminal. The greater the RIS maximum gain of a terminal, the greater the terminal's ability to reflect or refract signals. If the RIS maximum gain is the same for multiple terminals, the larger the RIS area the more the terminals will be able to reflect or refract the signal. If the RIS maximum gain is the same for a plurality of terminals and the RIS areas are the same for the plurality of terminals, the greater the number of RIS units the greater the ability of the terminals to reflect or refract the signal. From this point of view, the base station may also consider that the terminal is configured with GF transmission resources and GF transmission parameters according to one or more of its maximum gain, its area, and its number of units. For convenience of description, the GF transmission parameter is taken as an example of retransmission times.

In some embodiments, the base station may determine GF transmission resources and number of retransmissions based on the RIS maximum gain. It should be understood that the larger the RIS maximum gain, the fewer the GF transmission resources, and the fewer the number of retransmissions. For example, there are two terminals, the two terminals are a first terminal and a second terminal, and the RIS maximum gain of the first terminal is greater than the RIS maximum gain of the second terminal, so that the number of GF transmission resources configured by the base station for the first terminal is smaller than the number of GF transmission resources configured by the base station for the second terminal, and the number of retransmissions configured by the base station for the first terminal is smaller than the number of retransmissions configured by the base station for the second terminal.

In a possible implementation manner, a corresponding relationship between a preset RIS gain threshold and the number of GF transmission resources may be defined in advance, as shown in table 1, and the base station may determine the number of GF transmission resources to be configured according to the corresponding relationship and the RIS maximum gain of the terminal. Similarly, as shown in table 1, a correspondence between the RIS maximum gain and the number of retransmissions may be defined, and the base station may determine the value of the number of retransmissions to be configured according to the correspondence and the RIS maximum gain of the terminal.

TABLE 1

Presetting RIS gain threshold	GF transmission resource number	Number of retransmissions
			G₁	M₁	N₁
…	…	…
			G_i	M_i	N_i

It should be understood that if the RIS maximum gain of the terminal is G, when G is greater than or equal to G ₁ and G is less than G ₂ according to table 1, the base station may determine that M ₁ GF transmission resources are configured for the terminal, and the base station may determine that the number of retransmissions configured for the terminal has a value of N ₁. If the RIS maximum gain of the terminal is G, according to table 1, when G is greater than or equal to G _i, the base station may determine that M _i GF transmission resources are configured for the terminal, and the base station may determine that the number of retransmissions configured for the terminal is N _i.

If the RIS maximum gains of the plurality of terminals are the same, the larger the RIS area is, the stronger the capability of the terminals to forward signals is, and the stronger the strength of the base station to receive signals is. In other embodiments, the base station may determine GF transmission resources and GF transmission parameters based on the RIS maximum gain and the RIS area. For example, there are two terminals, the two terminals are a first terminal and a second terminal, the RIS maximum gain of the first terminal is the same as the RIS maximum gain of the second terminal, but the RIS area of the first terminal is larger than the RIS area of the second terminal, so that the GF transmission resources configured by the base station for the first terminal are smaller than the GF transmission resources configured by the base station for the second terminal, and the number of retransmissions configured by the base station for the first terminal is smaller than the number of retransmissions configured by the base station for the second terminal.

In a possible implementation manner, for each preset RIS gain threshold value of the multiple preset RIS gain thresholds, a corresponding relationship between the preset RIS area threshold value and the number of GF transmission resources may be defined, as shown in table 2, and the base station may determine the number of GF transmission resources to be configured according to the corresponding relationship and the RIS maximum gain and the RIS area of the terminal. Similarly, for each preset RIS gain threshold, a corresponding relationship between the preset RIS area threshold and the number of retransmissions may be defined, and as shown in table 2, the base station may determine, according to the corresponding relationship, the RIS maximum gain of the terminal, and the RIS area, a value of the number of retransmissions to be configured.

TABLE 2

It should be understood that if the RIS maximum gain of the terminal is G, the RIS area of the terminal is S, and when G is greater than G ₁ and less than or equal to G ₂, S is greater than S ₁ and less than or equal to S ₂, the base station may determine that M ₁ GF transmission resources are configured for the terminal, and the base station may determine that the number of retransmissions configured for the terminal has a value of N ₁ according to table 2. When G is greater than G ₁ and less than or equal to G ₂ and S is greater than S _i, the base station may determine that M _i GF transmission resources are configured for the terminal, and the base station may determine that the number of retransmissions configured for the terminal has a value of N _i.

If the RIS maximum gains of the plurality of terminals are the same, the RIS areas of the plurality of terminals are the same, the more RIS units, the stronger the ability of the terminals to forward signals, and the stronger the strength of the base station received signals. Based on this, in some embodiments, the base station may determine GF transmission parameters based on the RIS maximum gain, the RIS area, and the RIS unit number. For example, there are two terminals, the two terminals are a first terminal and a second terminal, the RIS maximum gain of the first terminal is the same as the RIS maximum gain of the second terminal, the RIS area of the first terminal is the same as the RIS area of the second terminal, but the number of RIS units included in the first terminal is greater than the number of RIS units included in the second terminal, so that the number of GF transmission resources configured by the base station for the first terminal is smaller than the number of GF transmission resources configured by the base station for the second terminal, and the number of retransmissions configured by the base station for the first terminal is smaller than the number of retransmissions configured by the base station for the second terminal.

In a possible implementation manner, for each preset RIS area threshold value of the plurality of preset RIS area thresholds corresponding to each preset RIS gain threshold value, a corresponding relationship between the number of preset RIS units and the number of GF transmission resources may be defined, as shown in table 3, and the base station may determine the number of GF transmission resources to be configured according to the corresponding relationship and the RIS maximum gain, the RIS area, and the number of RIS units of the terminal. Similarly, a corresponding relationship of the number of retransmissions of the preset RIS unit may be defined, and as shown in table 3, the base station may determine the value of the number of retransmissions to be configured according to the corresponding relationship and the RIS maximum gain, the RIS area, and the number of RIS units of the terminal.

TABLE 3 Table 3

It should be understood that if the RIS maximum gain of the terminal is G, the RIS area of the terminal is S, and the number of RIS units included in the terminal is L. According to table 3, when G is greater than G ₁ and less than or equal to G ₂, S is greater than S ₁ and less than or equal to S ₂, L is greater than L ₁ and less than or equal to L ₂, the base station may determine that M ₁ GF transmission resources are configured for the terminal, and the base station may determine that the number of retransmissions configured for the terminal has a value of N ₁. When G is greater than G ₁ and less than or equal to G ₂, S is greater than S ₁ and less than or equal to S ₂, L is greater than L _i, the base station may determine that M _i GF transmission resources are configured for the terminal, and the base station may determine that the number of retransmissions configured for the terminal has a value of N _i.

It should be noted that, in tables 1 to 3, only the GF transmission parameters are the GF transmission resource number and the number of retransmissions, and the type and the number of GF transmission parameters are not limited in the embodiment of the present application. For example, GF transmission parameters may also include MCS, etc. It should be appreciated that the modulation order of the MCS configured by the base station for the RIS capable terminal is greater than the modulation order of the MCS configured by the base station for the terminal without the RIS capability.

In some embodiments, like tables 1-3, RIS capability levels may be defined, with the number of GF transmission resources and GF transmission parameters corresponding to the different RIS capability levels also being different. The base station may determine the RIS capability level according to the RIS capability size of the terminal. For example, 3 RIS capability levels may be divided, with the 3 RIS capability levels being a first level, a second level, and a third level, respectively. When the RIS capability is greater than a first preset threshold, the RIS capability belongs to a first grade; when the RIS capability is smaller than or equal to a first preset threshold value and larger than a second preset threshold value, wherein the second preset threshold value is smaller than the first preset threshold value, the RIS capability belongs to a second grade; when the RIS capability is less than or equal to the second preset threshold, then the RIS capability is of a third level. It should be understood that the higher the RIS capability level, the fewer GF transmission resources the base station configures for the terminal, the fewer retransmissions the base station configures for the terminal, and the greater the modulation order of the MCS the base station configures for the terminal.

And S303, the terminal transmits the GF data according to the GF transmission resources configured by the base station.

It should be understood that the terminal may connect with the base station through a random access procedure before transmitting GF data to the base station. In the random access process, a terminal and a base station are aligned, for example, the base station transmits a plurality of beams to the terminal, the terminal determines the beam with the strongest signal strength according to the signal strength of the plurality of beams, and determines the direction of the base station based on the direction of the beam with the strongest signal strength; or, for example, the base station informs the terminal of the location of the base station, and the terminal determines the beam pointing direction according to the location of the base station. So after the terminal randomly accesses the base station, the terminal can know the direction of the base station. If the beam forming direction of the terminal RIS points to the direction of the base station, the intensity of the signal received by the base station from the terminal is strongest, and the reliability of GF data transmission can be ensured. For the terminal with RIS capability, the GF data can be transmitted in an auxiliary mode through the RIS, and the reliability of primary transmission of the GF data is improved.

The terminal with RIS capability may transmit GF data to the base station via the RIS, may transmit GF data to the base station via a radio frequency (antenna), or may transmit GF data to the base station via the RIS and the antenna. For convenience of distinction, in the embodiment of the present application, data is reflected or refracted by the RIS to the base station, and a transmission mode which is not transmitted to the base station by a conventional baseband transmission mode is called an RIS single transmission mode; the transmission mode of transmitting data to the base station through the RIS and the conventional baseband transmission mode is called an RIS auxiliary transmission mode. The conventional baseband transmission mode may also be that signals are transmitted through a radio frequency circuit.

The terminal with RIS capability can transmit data through RIS independent transmission mode or RIS auxiliary transmission mode. For example, communication services have high requirements on time delay and reliability, and some communication services have low requirements on reliability. Traffic with lower latency requirements may be reflected or refracted by the RIS to the base station. Traffic with high requirements for delay and reliability, such as uRLLC traffic, may be transmitted to the base station via the antenna after baseband processing, in addition to being reflected or refracted by the RIS. The terminal can determine which transmission mode is adopted according to the transmission rate of GF data to be transmitted. For example, for GF data with a smaller transmission rate, the terminal may use an RIS independent transmission mode, and for GF data with a larger transmission rate, the terminal may use an RIS auxiliary transmission mode, so that the transmission rate requirement of GF data transmission and the energy consumption requirement of the terminal may be both considered.

Referring to fig. 5, a flow chart of the terminal transmitting GF data is shown, and a specific flow is described below.

S501, the terminal determines whether GF data is first type data;

S502, the terminal determines that the GF data is the first type data, and the terminal determines that the GF data is transmitted in an RIS independent transmission mode.

S503, the terminal determines that the GF data is not the first type data, and the terminal determines to transmit the GF data through an RIS auxiliary transmission mode.

Before transmitting the GF data, the terminal can judge the data type of the GF data and determine which transmission mode is adopted for data transmission according to the determined data type. It should be understood that the data type may be defined herein in terms of the transmission rate size. For example, if the transmission rate of GF data is small, the data may be defined as first type data, e.g., the transmission rate is less than a preset threshold, and the data is first type data, e.g., voice data. Conversely, if the transmission rate of the data is large, the data may be defined as a second type of data, e.g., the transmission rate is greater than or equal to a preset threshold, and the data is a second type of data, e.g., time-frequency data. Since the transmission rate of the first type of data is small relative to the transmission rate of the second type of data, in some embodiments, the first type of data may also be referred to as small packet data, and the second type of data may be referred to as large packet data, relatively speaking.

In some embodiments, the terminal may determine whether GF data is first type data or second type data by determining a transmission rate size of GF data to be transmitted. In other embodiments, the terminal may determine that GF data is the first type of data or the second type of data by a service identification of the GF data. For example, the service identifier carried when transmitting GF data indicates that the GF data belongs to voice service, the terminal may determine that the GF data is the first type of data. For another example, the service identifier carried when transmitting GF data indicates that the GF data belongs to a video service or a game service, then the terminal may determine that the GF data is the second type of data.

The terminal determines that GF data to be transmitted is the first type of data, and the terminal may determine to use an RIS independent transmission scheme. The terminal determines that the GF data to be transmitted is the second type data, and the terminal can transmit the GF data by adopting an RIS auxiliary transmission mode, so that the transmission rate requirement of GF data transmission and the energy consumption of the terminal can be considered to realize the functions.

For ease of understanding, how a terminal with RIS capability can utilize its data transmission will be described below with reference to the accompanying drawings.

Fig. 6A is a schematic diagram of a possible structure of a terminal according to an embodiment of the present application. The terminal comprises a transceiver 601, a processor and an RIS603. The transceiver 601 may be configured to send the aforementioned first capability information to the base station, so that the base station may configure GF resources for transmitting GF data for the terminal according to the first capability information, and configure GF transmission parameters for the terminal. The processor may be configured to process GF data, generate a transmission signal, and send the transmission signal to the RIS or transceiver. The RIS603 may reflect and/or refract the received transmission signal such that the beam of the transmission signal is directed to the base station, enabling transmission of the transmission signal to the base station. And the transceiver 601 may also transmit the received transmission signal to the base station.

The transceiver 601 may include a radio frequency integrated circuit 6011, a radio frequency front end module 6012, and an antenna 6013. The processor may process GF data, generate a data signal to be transmitted, and output to the rf integrated circuit 6011. The rf integrated circuit 6011 may convert the received data signal into an rf signal (high frequency signal) to ensure that the signal may be transmitted through the antenna 6013. The rf front-end module 6012 may amplify and filter the rf signal output from the rf integrated circuit 6011, and send the processed rf signal to the antenna 6013.

It should be appreciated that if the GF data is a first type of data, the processor may determine to send the GF data via the RIS alone transmission, and if the GF data is a second type of data, the processor may determine to send the GF data via the RIS assisted transmission. The GF data is processed differently by the processor in different transmission modes. Thus, in an embodiment of the present application, the processor may include a first data processing module 6021 and a second data processing module 6022, wherein the first data processing module 6021 is configured to process GF data into a first transmission signal, and the first transmission signal may be transmitted through the RIS 603; the second data processing module 6022 is configured to process GF data into a second transmission signal, which may be transmitted via the transceiver 601.

The first data processing module 6021 may be any chip or chip system having a processing function, for example, the first data processing module 6021 may be a circuit or chip independent of a baseband chip. Or the first data processing module 6021 may be a functional module or an algorithm module in a baseband chip. The first data processing module 6021 is connected to the RIS603, and converts the data signal to be transmitted into a binary bit stream, maps the bit stream into a first transmission signal according to an MCS to be used for transmitting the data signal, such as QPSK, 16QAM, etc., and is coupled to the RIS603.

The RIS603 may be configured to reflect or refract an incident signal, so that the reflected or refracted signal of the signal is directed to the base station, thereby enhancing the strength of the base station for receiving the terminal signal, and improving the reliability of GF primary transmission. It should be understood that the beamforming direction of the RIS603 points in the direction of the base station, and the base station receives the strongest signal from the terminal. In order to ensure that the beamforming direction of the RIS603 points to the direction of the base station, the terminal in the embodiment of the present application may further include a RIS control module 604.

The RIS control module 604 is coupled to the RSI module 603 and is operable to generate a first control signal that is operable to adjust the amplitude and/or phase (i.e., the beamforming parameters) of the signal received by the RIS603 to effect reflection or refraction of the radio waves by the RIS603 in different directions. Thus, when the RIS603 is excited by the carrier signal, the phase and/or amplitude of the signal can be adjusted according to the adjusted beamforming parameter, that is, the reflection angle or refraction angle of the RIS603 on the incident signal is adjusted, so that the reflection angle or refraction angle of the signal is changed.

The RIS control module 604 may be a circuit or chip independent of the RIS603, or may be a functional module or algorithm module integrated in the RIS603, as long as the first control signal can be generated. It should be appreciated that the first control signal is used to adjust the beamforming parameters of the RIS603 such that the RIS603 reflects or refracts the incident signal and then points in the direction of the base station, so that the intensity of the signal received by the base station is strongest. After the terminal accesses the base station, the relative orientation of the terminal and the base station may change, and the first control signal generated by the RIS control module 604 may control the terminal to point to the base station. Specifically, the RIS control module 604 may generate the first control signal based on the base station orientation determined during random access.

In some embodiments, the first control signal may be an electrical signal comprising a plurality of magnitudes, different magnitudes corresponding to different phases and/or magnitudes. Illustratively, the first control signal occupies 1 bit, and then the first control signal corresponds to 2 amplitude voltage signals (which may be simply referred to as levels). The phase offset corresponding to the high level is 90 degrees, and the phase offset corresponding to the low level is 180 degrees. It should be understood that the high level and the low level are relatively, and for example, a level greater than 1V may be defined as a high level and a level less than or equal to 1V may be defined as a low level. When the first control signal is a high level signal, the RIS603 may shift the phase of the received signal by 90 °, and the reflection angle of the RIS603 to the incident signal may be changed. The first control signal occupies 2 bits, which may correspond to levels of 4 magnitudes, respectively, for example. For example, the 4 amplitudes are amplitude 1, amplitude 2, amplitude 3, and amplitude 4, respectively, where the phase offset corresponding to amplitude 1 is 45 °, the phase offset corresponding to amplitude 2 is 135 °, the phase offset corresponding to amplitude 3 is 225 °, and the phase offset corresponding to amplitude 4 is 270 °. When the amplitude of the first control signal is 1, the ris603 may shift the phase of the received signal by 45 °; when the amplitude of the first control signal is amplitude 4, the RIS603 may shift the phase of the received signal by 270 °, thereby changing the reflection angle of the RIS603 for the incident signal.

It should be noted that, if the RIS603 points to the base station, the first data processing module 6021 may directly send the first transmission signal to the RIS603. If the phase and/or amplitude of RIS603 needs to be adjusted, RIS control module 604 generates a first control signal by which the phase and/or amplitude of RIS603 is adjusted.

It should be appreciated that the RIS separate transmission, as illustrated by the dashed box in fig. 6A including the first data processing module 6021 and the RIS control module 604, the first transmission signal is reflected or refracted by the RIS603 to the base station and is not transmitted to the base station by the conventional baseband transmission. Since the data is not required to be transmitted by the conventional baseband transmission method, the rf integrated circuit 6011 and the rf front-end module 6012 can be turned off to reduce the power consumption of the terminal.

In addition, the conventional baseband transmission method supports multiple carriers, but for RIS single transmission, the multiple carrier signals supported by the baseband transmission method cannot be used for excitation, so that an excitation source for exciting the RIS603 can be arranged in the terminal, and the excitation source can generate a single carrier signal for exciting the RIS603, which is simpler.

If the GF data is the second type of data, the processor may determine to transmit the GF data using RIS assisted transmission. In this case, the processor determines that GF data is processed into a first transmission signal by the first data processing module 6021, that GF data is processed into a second transmission signal by the second data processing module 6022, and outputs the second transmission signal to the transceiver 601. I.e. the terminal may transmit to the base station via the transceiver 601 in addition to reflecting the data signal to the base station via the RIS 603. Because the RIS auxiliary transmission mode can support a larger transmission rate, the reliability of data transmission can be improved, and the time delay is reduced.

As shown in fig. 6A, in the RIS auxiliary transmission mode, the second data processing module 6022 is connected to the rf integrated circuit 6011, the rf integrated circuit 6011 is connected to the rf front-end module 6012, and the rf front-end module 6012 is connected to the RIS603 and the antenna 6013. If the radio frequency front end module 6012 is connected to the RIS603, the data signal output by the radio frequency front end module 6012 may be coupled to the RIS603. If the rf front-end module 6012 is connected to the antenna 6013, the data signal output by the rf front-end module 6012 may be transmitted to the antenna 6013, and the antenna 6013 radiates the data signal, coupling the data signal to the RIS603 (illustrated in dashed lines in fig. 6A). That is, in the embodiment of the present application, the data signal output by the rf front-end module 6012 may be coupled to the RIS603 through a wire connected to the RIS603, or may be coupled to the RIS603 through an antenna 6013. In contrast, a manner of coupling a data signal to be transmitted through the antenna 6013 to the RIS0613 by a wire coupling manner may be referred to as a wire feed coupling manner, which is also referred to as a space feed coupling manner. Illustratively, the data signal to be transmitted may be coupled to the RIS603 by changing the beamforming direction of the antenna 6013. Alternatively, the RIS603 may be disposed on a side of the antenna 6013 adjacent to the housing, such that signals radiated by the antenna 6013 couple to the RIS603.

The terminal may determine to transmit GF data using a line feed coupling scheme and/or a space feed coupling scheme. For example, when the transmission path of the antenna 6013 to the base station is blocked or the link quality is poor, it may be determined to employ the air-feed coupling method, that is, to couple the data signal to the RIS603 using the antenna 6013 (illustrated in dashed lines in fig. 6A). For example, to improve the reliability of the primary transmission of GF data, the terminal may determine that the signal reflected or refracted by the RIS603 is in a line-feed coupling manner and a space-feed coupling manner, where one path is from the radio frequency front end module 6012 and the other path is from the antenna 6013, and for the base station, the strength of the signal received from the RIS603 is higher. Or the terminal may determine that the GF data is transmitted by using the line-feed coupling method and the antenna 6013, so that for the base station, two signals may be received, one of which is from the signal reflected by the RIS603 and the other is from the signal transmitted by the terminal through the antenna 6013, so that the quality of the wireless link between the terminal and the base station may be enhanced, thereby further improving the reliability of the initial transmission of the GF data and reducing the delay.

Illustratively, the terminal may determine that the quality of the communication link between the antenna 6013 and the base station is poor, and may determine that the second transmission signal is coupled to the RIS603 using a wire-fed coupling. Specifically, the second data processing module 6022 determines to send the second transmission signal to the RIS603 by a wire feed coupling. In a possible implementation, the rf front-end module 6012 is connected to the RIS603 by a wire, and the rf front-end module 6012 is disconnected from the antenna 6013. In this case, the path between the rf front-end module 6012 and the RIS603 is in an open state, and the path between the rf front-end module 6012 and the antenna 6013 is in a disconnected state. The rf integrated circuit 6011 sends the second transmission signal to the rf front-end module 6012, and the rf front-end module 6012 sends the data signal to the RIS603. I.e. the data signal is sent to the RIS603 by means of a line feed coupling.

For another example, the second data processing module 6022 may also determine to couple the second transmission signal to the RIS603 by way of a feed-through coupling. In this case, the rf front-end module 6012 and the RIS603 may not be connected, and the rf front-end module 6012 is connected to the antenna 6013. For example, the rf front-end module 6012 may be connected to the antenna 6013 through an rf switch in the rf front-end module 6012. In this case, the path between the rf front-end module 6012 and the RIS603 is in an off state, and the path between the rf front-end module 6012 and the antenna 6013 is in an on state. The rf front-end module 6012 sends the second transmission signal to the antenna 6013, and the antenna 6013 sends the second transmission signal to the RIS603. I.e. the second signal is sent to the RIS603 by means of a space feed coupling.

It will be appreciated that if the RIS603 is disposed on a side of the antenna 6013 adjacent the housing, then signals radiated by the antenna 6013 will couple to the RIS603. If RIS603 is remote from antenna 6013, then the signal radiated by antenna 6013 may not couple to RIS603. In this case, if the second data processing module 6022 may also generate a control signal, the control signal may be used to control the beamforming direction of the antenna 6013 such that the signal radiated by the antenna 6013 is coupled to the RIS603.

For another example, the second data processing module 6022 may also determine to couple the first signal to the RIS603 by a wire feed coupling and a null feed coupling. In a possible implementation manner, please refer to fig. 6B, which is another possible structural schematic diagram of the terminal. The rf front-end module 6012 is connected to the RIS603 by a wire, and the rf front-end module 6012 is connected to the antenna 6013. Since the second transmission signal output by the second data processing module 6022 may be transmitted through the rf front-end module 6012 and the RIS603, it may also be transmitted through the rf front-end module 6012 and the antenna 6013. In this case, a switch 6014 may be provided at the terminal, where the switch 6014 may be used to control the path between the rf front-end module 6012 and the RIS603 to be in an on state or an off state, and to control the path between the rf front-end module 6012 and the antenna 6013 to be in an on state or an off state, that is, to implement coupling of the second transmission signal to the RIS603 by using a line-feed coupling method and/or an air-feed coupling method through the switch 6014.

The implementation form of the switch 6014 is not limited in the embodiment of the present application, for example, the switch 6014 may be disposed in the rf front-end module 6012, and the switch 6014 may be a switch, for example, a multiple pole multiple throw switch. Switch 6014 may also be a plurality of switches, such as a plurality of single pole single throw switches, or switch 6014 may also be a plurality of multiple pole multiple throw switches.

When the terminal determines that the data to be transmitted is the second type data, the switch 6014 is configured to control the path between the rf front-end module 6012 and the RIS603 to be in an on state, and the path between the rf front-end module 6012 and the antenna 6013 is in an off state, that is, send the second transmission signal by a line-feed coupling manner. For example, the second data processing module 6022 may generate a second control signal, where the second control signal may be used to control the switch 6014 to open a path between the rf front-end module 6012 and the RIS603, and disconnect a path between the rf front-end module 6012 and the antenna 6013, so that a signal output by the second data processing module 6022 is sent to the base station sequentially via the rf integrated circuit 6011, the rf front-end module 6012, and the RIS 603.

Of course, the switch 6014 may also control the path between the rf front-end module 6012 and the RIS603 to be in an off state, and the path between the rf front-end module 6012 and the antenna 6013 to be in an on state, that is, send the second transmission signal through an air-feed coupling mode. For example, the second data processing module 6022 may generate a third control signal, where the third control signal may be used to control the switch 6014 to disconnect the path between the rf front-end module 6012 and the RIS603, and open the path between the rf front-end module 6012 and the antenna 6013, so that the signal output by the second data processing module 6022 sequentially passes through the rf integrated circuit 6011, the rf front-end module 6012, and the antenna 6013 couples the second transmission signal to the RIS603 and then sends the second transmission signal to the base station.

The switch 6014 may also be used to control the path between the rf front-end module 6012 and the RIS603 to be on. When the switch 6014 controls the path between the rf front-end module 6012 and the RIS603 to be in an on state. For example, the second data processing module 6022 may be configured to generate a fourth control signal that may control the switch 6014 to open a path between the rf front-end module 6012 and the RIS603, and to open a path between the rf front-end module 6012 and the antenna 6013. When the channel between the radio frequency front end module 6012 and the antenna 6013 is in an open state, and the channel between the radio frequency front end module 6012 and the RIS603 is in an open state, the RIS auxiliary transmission can be realized by a line feed coupling mode and an air feed coupling mode.

When the switch 6014 controls the path between the rf front-end module 6012 and the RIS603 to be in an off state and the path between the rf front-end module 6012 and the antenna 6013 to be in an on state, the second data processing module 6022 may further determine which of the antennas 6013 of the terminal transmits the second transmission signal. For example, the second data processing module 6022 may generate signals for controlling the on-off of the multiple channels of the switch 6014 to achieve the antenna 6013 that is selectively communicated.

The switch 6014 may be located in the rf front-end module 6012, and the switch 6014 may be independent of the rf switch in the rf front-end module 6012 or may be integrated with the rf switch. For example, a channel may be added to the rf switch in the rf front-end module 6012, where the channel is used to control the on/off state of the RIS603, and the added channel may be used to control the channel between the rf front-end module 6012 and the RIS603 to be in an on state or an off state. Therefore, the improvement of terminal hardware can be reduced, and the terminal can couple the first signal to the RIS through a null feed coupling mode or a line feed coupling mode or through the null feed coupling mode and the line feed coupling mode, so that the terminal is more flexible.

One channel of the switch 6014 controls the path between the rf front-end module 6012 and the RIS603 to be in an on state or an off state, and the other channels of the switch 6014 control the path between the rf front-end module 6012 and the antenna 6013 to be in an on state or an off state.

It should be noted that, if the quality of the communication link between the antenna 0613 and the base station is good, the path between the rf front-end module 6012 and the antenna 6013 may be in an open state. In this case, the second transmission signal may be reflected or refracted by the RIS603 to the base station, and the second transmission signal may also be sent to the base station through the rf integrated circuit 6011, the rf front-end module 6012, and the antenna 6013. For the base station, the signals received by the base station have two paths, one path is from the RIS603, and the other path is from the antenna 6013, so that the reliability of data transmission is further improved.

It should be understood that if GF data to be transmitted by the terminal is changed from the first type of data to the second type of data, the data transmission mode may be switched from the RIS-alone transmission mode to the RIS-assisted transmission mode, for example, the data is processed by the second data processing module 6022. If GF data to be transmitted by the terminal is changed from the second type data to the first type data, the transmission mode may be switched from the RIS auxiliary transmission mode to the RIS independent transmission mode, and the data is processed by the first data processing module 6021.

In the embodiment of the application, the terminal assists the transmission of the GF data through the RIS, so that the reliability of the primary transmission of the GF data can be improved, the retransmission times of the GF data can be further reduced, and the transmission time delay of the GF data can be reduced. The base station allocates GF transmission resources for the terminal according to the RIS capability of the terminal, and configures GF transmission parameters, so that collision of GF transmission resources can be reduced, reliability of primary transmission of GF data is improved, and transmission delay is reduced. It should be appreciated that if a terminal with RIS capability is configured with fewer GF transmission resources, for example, a terminal with RIS capability is configured with one GF transmission resource, GF data is retransmitted on the originally configured GF transmission resource after initial transmission failure of GF data. In contrast, the terminal having no RIS capability determines to transmit GF data, and, since a plurality of GF transmission resources are configured, can retransmit GF data on GF transmission resources different from the initially transmitted GF data in order to improve the success rate of data transmission.

In the embodiments of the present application, the method provided in the embodiments of the present application is described in terms of the terminal, the network device, and the interaction between the terminal and the network device, respectively. In order to implement the functions in the method provided by the embodiment of the present application, the terminal and the network device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

Communication devices for implementing the above method in the embodiments of the present application are described below with reference to the accompanying drawings. Therefore, the above contents can be used in the following embodiments, and repeated contents are not repeated.

Fig. 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. The communication apparatus 700 may correspond to implementing the functions or steps implemented by the terminal or the network device in the above-described respective method embodiments. The communication device may include a processing module 710 and a transceiver module 720. Optionally, a storage unit may be included, which may be used to store instructions (code or programs) and/or data. The processing module 710 and the transceiver module 720 may be coupled to the storage unit, for example, the processing module 710 may read instructions (codes or programs) and/or data in the storage unit to implement the corresponding methods. The units can be independently arranged or partially or fully integrated.

In some possible embodiments, the communications device 700 can correspondingly implement the behaviors and functions of the terminal in the above method embodiments. For example, the communication device 700 may be a terminal, or may be a component (e.g., a chip or a circuit) applied to the terminal. The transceiver module 720 may be used to perform all of the receiving or transmitting operations performed by the terminal in the embodiments shown in fig. 3, 5, e.g., S301, S303 in the embodiment shown in fig. 3, and/or other processes for supporting the techniques described herein. The processing module 710 is configured to perform all operations performed by the terminal in the embodiments shown in fig. 3 and 5, except for the transceiving operations, such as S501-S503 in the embodiment shown in fig. 5, and/or other procedures for supporting the techniques described herein.

In some embodiments, the transceiver module 720 is configured to send first capability information to the network device, and receive GF transmission parameters from the network device, and transmit GF data over GF transmission resources according to the GF transmission parameters, where the first capability information is configured to indicate that the communication device 700 has RIS capability, and the RIS capability is configured to indicate that the communication device 700 is allowed to transmit data over the RIS; the GF transmission parameters are configured according to the RIS capability of the communication device 700, and include the number of retransmissions of the GF data and/or the MCS to be used for transmitting the GF data.

As an alternative implementation, the first capability information includes one or more of a maximum gain of the RIS, an area of the RIS, and a number of RIS units included by the RIS.

As an optional implementation manner, the GF transmission parameter includes a number of retransmissions of GF data, where the number of retransmissions is less than a first preset value, and the first preset value is a number of retransmissions configured by a terminal that does not have RIS capability;

The GF transmission parameters comprise MCS to be adopted for transmitting the GF data, and the modulation order of the MCS is larger than a second preset value, wherein the second preset value is the modulation order of the MCS configured by the terminal without RIS capability.

As an alternative implementation, the number of GF transmission resources configured by the communication device 700 is less than the number of GF transmission resources configured by terminals that are not RIS capable.

As an optional implementation manner, the GF data is first type data, the processing module 710 determines that an RIS independent transmission manner is adopted, and controls the transceiver module 720 to transmit the GF data on the GF transmission resource according to the GF transmission parameter, where a transmission rate of the first type data is less than or equal to a first preset threshold; the RIS independent transmission mode comprises the steps of coupling a signal carrying GF data to the RIS, adjusting the amplitude and/or the phase of the RIS, and transmitting the signal to network equipment through the RIS after the amplitude and/or the phase are adjusted; or alternatively

As an alternative implementation manner, the GF data is a second type data, the processing module 710 adopts an RIS auxiliary transmission manner, and controls the transceiver module 720 to transmit the GF data on the GF transmission resource according to the GF transmission parameter, where the second type data has a transmission rate greater than the first preset threshold, the RIS auxiliary transmission manner includes coupling a signal carrying the GF data to the RIS, adjusting an amplitude and/or a phase of the RIS, transmitting the signal to the network device through the RIS after adjusting the amplitude and/or the phase, and transmitting the signal carrying the GF data to the network device through an antenna.

It should be understood that the processing module 710 in the embodiment of the present application may be implemented by the first data processing module 6021 and related circuit components in fig. 6A or fig. 6B, and the transceiver module 720 may be implemented by the circuit components or the communication interface such as the radio frequency front end module 6012, the switch 6014, and the antenna 6013 in fig. 6A or fig. 6B.

In other possible embodiments, the communications apparatus 700 can correspondingly implement the behaviors and functions of the network device in the above-described method embodiments. For example, the communication device 700 may be a base station, or may be a component (e.g., a chip or a circuit) applied to the base station. The transceiver module 720 may be used to perform all of the receiving or transmitting operations performed by the network device in the embodiments shown in fig. 3, 4, e.g., S301, S303 in the embodiment shown in fig. 3, and/or other processes for supporting the techniques described herein. The processing module 710 is configured to perform all operations performed by the network device in the embodiments shown in fig. 3 and 4, except for the transceiving operations, such as S302 in the embodiment shown in fig. 3, and/or other processes for supporting the techniques described herein.

In some embodiments, the transceiver module 720 is configured to receive first capability information from a terminal, and send, to the terminal, GF transmission parameters determined by the processing module 710, where the first capability information is used to indicate that the terminal has RIS capability, where the RIS capability is used to indicate that the terminal is allowed to transmit data through the RIS, and the terminal has RIS capability, where the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters include a number of retransmissions of GF data and/or an MCS to be used for sending GF data.

As an alternative implementation, the number of GF transmission resources configured by the processing module 710 for the terminal is less than the number of GF transmission resources configured for a terminal that is not RIS capable.

As an alternative implementation, the number of retransmissions configured by the processing module 710 for a first terminal, which has RIS capability, is smaller than the number of retransmissions configured by the processing module for a second terminal, which has RIS capability, wherein,

It should be appreciated that the processing module 710 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 720 may be implemented by a transceiver or transceiver-related circuit component or a communication interface.

As shown in fig. 8, a communication apparatus 800 provided in an embodiment of the present application is shown, where the communication apparatus 800 may be a terminal, capable of implementing a function of the terminal in the method provided in the embodiment of the present application, or the communication apparatus 800 may be a network device, capable of implementing a function of the network device in the method provided in the embodiment of the present application; the communication device 800 may also be a device capable of supporting a terminal to implement a function corresponding to the method provided in the embodiment of the present application, or a device capable of supporting a network device to implement a function corresponding to the method provided in the embodiment of the present application. The communication device 800 may be a chip or a chip system. In the embodiment of the application, the chip system can be formed by a chip, and can also comprise the chip and other discrete devices.

In a hardware implementation, the transceiver module 720 may be a transceiver, which is integrated in the communication device 800 to form the communication interface 810.

The communication apparatus 800 includes at least one processor 820 for implementing or for supporting the communication apparatus 800 to implement the functions of a network device or terminal in the method provided by the embodiment of the present application. Reference is made specifically to the detailed description in the method examples, and details are not described here.

The communication device 800 may also include at least one memory 830 for storing program instructions and/or data. Memory 830 is coupled to processor 820. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 820 may operate in conjunction with memory 830. Processor 820 may execute program instructions and/or data stored in memory 830 to cause communication device 800 to implement a corresponding method. At least one of the at least one memory may be included in the processor.

The communication apparatus 800 may also include a communication interface 810 for communicating with other devices over a transmission medium, such that an apparatus for use in the communication apparatus 800 may communicate with other devices. Illustratively, when the communication apparatus is a terminal, the other device is a network device; or when the communication apparatus is a network device, the other device is a terminal. Processor 820 may transmit and receive data using communication interface 810. The communication interface 810 may be a transceiver in particular.

The specific connection medium between the communication interface 810, the processor 820, and the memory 830 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 830, the processor 820 and the communication interface 810 are connected through the bus 840 in fig. 8, where the bus is indicated by a thick line in fig. 8, and the connection manner between other components is only schematically illustrated, but not limited thereto. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 8, but not only one bus or one type of bus.

In an embodiment of the present application, processor 820 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

In an embodiment of the present application, the memory 830 may be a nonvolatile memory, such as a hard disk (HARD DISK DRIVE, HDD) or a solid-state disk (SSD), or may be a volatile memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in embodiments of the present application may also be circuitry or any other device capable of performing memory functions for storing program instructions and/or data.

The communication device in the above embodiment may be a terminal, a circuit, a chip applied to the terminal, or other combination devices, components, etc. having the terminal function. When the communication device is a terminal, the transceiver module may be a transceiver, may include an antenna, a radio frequency circuit, and the like, and the processing module may be a processor, for example: a central processing module (central processing unit, CPU). When the communication device is a component having the above terminal function, the transceiver module may be a radio frequency unit, and the processing module may be a processor. When the communication device is a chip or a chip system, the transceiver module may be an input/output interface of the chip or the chip system, and the processing module may be a processor of the chip or the chip system.

Fig. 9 shows a simplified schematic structure of a communication device. For easy understanding and convenient illustration, in fig. 9, taking the communication device as a base station as an example, the functions of the network device in the above-described method embodiment are performed.

The communication device 900 may include a transceiver 910, a memory 921, and a processor 922. The transceiver 910 may be used for communication by a communication device, such as for receiving the first capability information described above, etc. The memory 921 is coupled to the processor 922 and is operable to store programs and data necessary for the communication device 900 to perform the functions. The processor 922 is configured to support the communication device 900 to perform the corresponding functions of the above-described method, which may be implemented by calling a program stored in the memory 921.

In particular, the transceiver 910 may be a wireless transceiver that may be used to support the communication device 900 in receiving and transmitting signaling and/or data over a wireless air interface. The transceiver 910 may also be referred to as a transceiver unit or a communication unit, and the transceiver 910 may include one or more radio frequency units 912, such as a remote radio frequency unit (remote radio unit, RRU) or an active antenna unit (ACTIVE ANTENNA unit, AAU), which may be specifically used for transmission of radio frequency signals and conversion of radio frequency signals to baseband signals, and one or more antennas 911, which may be specifically used for radiation and reception of radio frequency signals. Alternatively, the transceiver 910 may include only the above radio frequency units, and then the communication device 900 may include the transceiver 910, the memory 921, the processor 922, and the antenna 911.

The memory 921 and the processor 922 may be integrated or independent from each other. As shown in fig. 9, the memory 921 and the processor 922 may be integrated with the control unit 920 of the communication device 900. For example, the control unit 920 may include a baseband unit (BBU) of the LTE base station, which may also be referred to as a Digital Unit (DU), or the control unit 910 may include a Distributed Unit (DU) and/or a centralized unit (centralized unit, CU) in the base station under the 5G and future radio access technologies. The control unit 920 may be configured by one or more antenna panels, where the multiple antenna panels may support radio access networks (such as LTE networks) with a single access system, and the multiple antenna panels may also support radio access networks (such as LTE networks, 5G networks, or other networks) with different access systems. The memory 921 and the processor 922 may serve one or more antenna panels. That is, the memory 921 and the processor 922 may be provided separately on each antenna panel. The same memory 921 and processor 922 may be shared by a plurality of antenna panels. Furthermore, each antenna panel may be provided with the necessary circuitry, for example, which may be used to implement the coupling of the memory 921 and the processor 922. The connections between the above transceiver 910, processor 922, and memory 21 may be made through a bus (bus) architecture and/or other connection medium.

Based on the structure shown in fig. 9, when the communication device 900 needs to transmit data, the processor 922 may perform baseband processing on the data to be transmitted and output a baseband signal to the radio frequency unit, where the radio frequency unit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal in the form of electromagnetic wave through the antenna. When data is transmitted to the communication device 900, the radio frequency unit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 922, and the processor 922 converts the baseband signal into data and processes the data.

Based on the structure shown in fig. 9, the transceiver 910 may be used to perform the steps performed by the transceiver module 720 above. And/or the processor 922 may be used to invoke instructions in the memory 921 to perform the steps performed by the processing module 710 above.

Fig. 10 shows a simplified schematic structure of a terminal. For easy understanding and ease of illustration, in fig. 10, the terminal is exemplified by a mobile phone. As shown in fig. 10, the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the vehicle-mounted unit, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of devices may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is shown in fig. 10. In an actual device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the application, the antenna and the radio frequency circuit with the transmitting and receiving functions can be regarded as a transmitting and receiving unit of the device, and the processor with the processing function can be regarded as a processing unit of the device. As shown in fig. 10, the apparatus includes a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 may also be referred to as a transceiver, transceiver device, etc. The processing unit 1020 may also be referred to as a processor, processing board, processing module, processing device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 1010 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit 1010 may be regarded as a transmitting unit, i.e., the transceiver unit 1010 includes a receiving unit and a transmitting unit. The transceiver unit 1010 may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that, the transceiver unit 1010 is configured to perform the transmitting operation and the receiving operation on the terminal side in the above-described method embodiment, and the processing unit 1020 is configured to perform other operations on the terminal other than the transmitting operation in the above-described method embodiment.

For example, in one implementation, transceiver unit 1010 may be used to perform S301, S302 in the embodiment shown in fig. 3, and/or other processes for supporting the techniques described herein.

When the communication device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

In this embodiment, reference may be made to the apparatus shown in fig. 11. As an example, the apparatus may perform functions similar to those of the processing module 710 of fig. 7. In fig. 11, the apparatus includes a processor 1110, a transmit data processor 1120, and a receive data processor 1130. The processing module 710 in the above embodiment may be the processor 1110 in fig. 11, and perform corresponding functions. The processing module 710 in the above embodiment may be the transmit data processor 1120, and/or the receive data processor 1130 in fig. 11. Although a channel encoder, a channel decoder are shown in fig. 11, it is to be understood that these modules are not limiting illustrations of the present embodiment, but are merely schematic.

Fig. 12 shows another form of the present embodiment. The communication device 1200 includes a modulation subsystem, a central processing subsystem, a peripheral subsystem, and the like. The communication device in this embodiment may act as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1203, an interface 1204. Wherein the processor 1203 performs the functions of the processing module 1310, and the interface 1204 performs the functions of the transceiver module 1320. As another variation, the modulation subsystem includes a memory 1206, a processor 1203, and a program stored on the memory 1206 and executable on the processor, where the processor 1203 implements the methods of the terminals in the method embodiments described above when executing the program. It is noted that the memory 1206 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1200, as long as the memory 1206 is coupled to the processor 1203.

The embodiment of the application also provides a communication system, in particular to the communication system which comprises network equipment and terminal equipment, or more network equipment and terminal equipment. The communication system comprises, by way of example, network devices and terminals for implementing the relevant functions of fig. 3, 4 and 5 described above.

The network devices are respectively used for realizing the functions of the related network parts in the figures 3 and 4. The terminal is used for realizing the functions of the terminals related to the figures 3 and 5. Please refer to the related description in the above method embodiment, and the description is omitted here.

Embodiments of the present application also provide a computer-readable storage medium, including instructions that, when executed on a computer, cause the computer to perform the method performed by the network device of fig. 3 and 4; or when run on a computer, cause the computer to perform the methods performed by the terminals of fig. 3, 5.

Embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method performed by the network device of fig. 3, 5; or when run on a computer, cause the computer to perform the methods performed by the terminals of fig. 3, 5.

The embodiment of the application provides a chip system, which comprises a processor and a memory, wherein the memory is used for realizing the functions of network equipment or a terminal in the method; or for implementing the functions of the network device and the terminal in the foregoing method. The chip system may be formed of a chip or may include a chip and other discrete devices.

It should be understood that the terms "system" and "network" in embodiments of the application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein a, b, c may be single or plural.

And, unless specified to the contrary, references to "first," "second," etc. ordinal words of embodiments of the present application are used for distinguishing between multiple objects and are not used for limiting the order, timing, priority, or importance of the multiple objects. For example, the first and second relaxation measurement strategies are merely intended to distinguish between different measurements, and are not intended to represent differences in priority, importance, etc. of the two strategies.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can 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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within 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. An unlicensed transmission method, comprising:

The method comprises the steps that a terminal sends first capability information to network equipment, wherein the first capability information is used for indicating that the terminal has RIS capability, and the RIS capability is used for indicating that the terminal is allowed to transmit data through RIS;

The terminal receives unlicensed GF transmission parameters from the network equipment, wherein the GF transmission parameters are configured according to RIS capability of the terminal, and the GF transmission parameters comprise retransmission times of GF data and/or Modulation and Coding Strategies (MCS) to be adopted for sending the GF data;

And the terminal transmits the GF data on the GF transmission resource according to the GF transmission parameters.

2. The method of claim 1, wherein the first capability information comprises one or more of a maximum gain of the RIS, an area of the RIS, and a number of RIS units included by the RIS.

3. The method of claim 1 or 2, wherein the GF transmission parameter comprises a number of retransmissions of GF data, the number of retransmissions being less than a first preset value, the first preset value being a number of retransmissions configured by terminals that do not have RIS capability;

4. The method of claim 1 or 2, wherein the number of GF transmission resources configured by the terminal is less than the number of GF transmission resources configured by a terminal that is not RIS capable.

5. The method of claim 1 or 2, wherein the terminal transmits GF data over GF transmission resources according to the GF transmission parameter, comprising:

The GF data is first type data, the terminal adopts an RIS single transmission mode, and transmits the GF data on the GF transmission resource according to the GF transmission parameters, wherein the transmission rate of the first type data is smaller than or equal to a first preset threshold value; the RIS independent transmission mode comprises the steps of coupling a signal carrying GF data to the RIS, adjusting the amplitude and/or the phase of the RIS, and transmitting the signal to the network equipment through the RIS after the amplitude and/or the phase are adjusted; or alternatively

The GF data is second type data, the terminal adopts an RIS auxiliary transmission mode and transmits the GF data on the GF transmission resource according to the GF transmission parameters, wherein the transmission rate of the second type data is larger than the first preset threshold value; the RIS assisted transmission mode includes coupling a signal carrying the GF data to the RIS and adjusting an amplitude and/or phase of the RIS, transmitting the signal to the network device through the RIS after adjusting the amplitude and/or phase, and transmitting the signal carrying the GF data to the network device through an antenna.

6. An unlicensed transmission method, comprising:

The method comprises the steps that network equipment receives first capability information from a terminal, wherein the first capability information is used for indicating that the terminal has RIS capability, and the RIS capability is used for indicating that the terminal is allowed to transmit data through RIS;

The network equipment sends an unlicensed GF transmission parameter to the terminal, wherein the GF transmission parameter is configured according to RIS capability of the terminal, and the GF transmission parameter comprises retransmission times of GF data and/or modulation and coding strategy MCS to be adopted for sending the GF data.

7. The method of claim 6, wherein the first capability information comprises one or more of a maximum gain of the RIS, an area of the RIS, and a number of RIS units included by the RIS.

8. The method of claim 6, wherein the GF transmission parameter comprises a number of retransmissions of GF data that is less than a first preset value that is a number of retransmissions configured by terminals that do not have RIS capability;

9. The method of any of claims 6-8, wherein the number of GF transmission resources configured by the terminal is less than the number of GF transmission resources configured for a terminal that is not RIS capable.

10. The method according to any one of claims 6-8, wherein the number of retransmissions configured by the network device for a first terminal is smaller than the number of retransmissions configured by the network device for a second terminal, the first terminal having RIS capability, the second terminal having RIS capability, wherein,

11. A terminal comprising a processor, a RIS, and a transceiver;

12. The terminal of claim 11, wherein the processor is further configured to generate a first control signal and output the first control signal to the RIS, wherein the first control signal is configured to adjust a phase and/or an amplitude of the RIS.

13. The terminal of claim 12, wherein the processor comprises a first data processing module and a RIS control module, wherein the RIS control module is configured to generate the first control signal.

14. The terminal of claim 13, wherein the processor further comprises a second data processing module configured to obtain GF data, process the GF data over GF transmission resources according to the GF transmission parameters, generate a second transmission signal, and send the second transmission signal to the transceiver; the GF transmission parameters are configured according to RIS capability of the terminal, and the GF transmission parameters include retransmission times of GF data and/or modulation and coding policy MCS to be adopted for transmitting GF data.

15. The terminal of claim 14, wherein if the GF data is a first type of data, the first data processing module obtains the GF data, wherein a transmission rate of the first type of data is less than or equal to a first preset threshold;

16. The terminal of claim 14 or 15, wherein the transceiver comprises a radio frequency integrated circuit, a radio frequency front end module, and an antenna, wherein,

The radio frequency integrated circuit is connected with the second data processing module and is used for sending the second transmission signal to the radio frequency front-end module;

17. The terminal of claim 16, wherein the second transmission signal is transmitted via the radio frequency integrated circuit, the radio frequency front end module, to the antenna, the antenna to couple the second transmission signal to the RIS.

18. The terminal of claim 17, wherein the transceiver further comprises a switch, one end of the radio frequency integrated circuit is connected to the second data processing module, the other end of the radio frequency integrated circuit is connected to the radio frequency front end module, and a first end of the radio frequency front end module is connected to the radio frequency integrated circuit; the second end of the radio frequency front end module is connected with the antenna, and the third end of the radio frequency front end module is connected with the RIS through the switch;

19. The terminal of claim 18, wherein the GF data is a second type of data, the processor further configured to generate a second control signal for controlling the switch to open a path between the rf front end module and the RIS; or alternatively

The GF data is second type data, and the processor is further used for generating a third control signal, wherein the third control signal is used for controlling the switch to disconnect a passage between the radio frequency front end module and the RIS;

wherein the transmission rate of the second type of data is greater than a first preset threshold.

20. A communication device, characterized in that the communication device comprises a processor and a memory for storing a computer program, the processor being adapted to execute the computer program stored on the memory, such that the device performs the method according to any of claims 1-5 or 6-10.

21. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when executed by a computer, causes the computer to perform the method according to any one of claims 1-5 or 6-10.