CN113747464A

CN113747464A - Authorization-free transmission method, terminal and communication device

Info

Publication number: CN113747464A
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: 2021-12-03
Also published as: WO2021238729A1

Abstract

The application discloses an authorization-free transmission method, a terminal and a communication device. The method comprises the following steps: the terminal sends first capability information to the network equipment, receives GF transmission parameters from the network equipment, 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 data through the RIS, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters comprise the retransmission times of the GF data and/or MCS adopted for transmitting the GF data. Since the RIS can improve the quality of a radio link, the setting of the RIS at the terminal can improve the reliability of the GF initial transmission. The network equipment configures GF transmission resources based on the RIS capability of the terminal, does not configure more GF transmission resources, reduces the conflict of the GF transmission resources and can also improve the reliability of GF initial transmission.

Description

Authorization-free transmission method, terminal and communication device

Cross Reference to Related Applications

The present application claims priority from the chinese patent application filed on 29/5/2020 and entitled "a data transmission method and terminal," in chinese patent office, application number 202010473565.7, 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 authorization-free transmission method, a terminal, and a communication device.

Background

In New Radio (NR) systems, grant-free (GF) transmission is proposed. In the GF transmission, the network device sends configured grant configuration (configured grant configuration) information to the terminal through Radio Resource Control (RRC) signaling, where the configuration information is used to configure several parameters of the GF transmission. For example, the configuration information is used to configure all transmission resources and transmission parameters such as time domain resources, the number of repeated transmissions, and the like. After receiving the configuration information, the terminal can use the configured transmission parameters to perform data transmission on the configured time-frequency resources.

The terminal GF transmission will fail if the transmission link quality is poor or if GF transmission resources collide. This requires the terminal to retransmit the data to be transmitted (which may be referred to as GF retransmission for short) to improve the performance of GF transmission. Although the performance of GF transmission can be improved by GF retransmission, the reliability of the GF initial transmission cannot be guaranteed.

Disclosure of Invention

The application provides an authorization-free transmission method, a terminal and a communication device, which are used for improving the reliability of authorization-free initial 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 capable of supporting a communication apparatus to implement functions required by the method, such as a chip or a system-on-chip. The following description will be given taking the communication device as a terminal as an example. The method comprises the following steps:

the terminal sends first capability information to the network equipment, receives GF transmission parameters from the network equipment, 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 data through the RIS, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters comprise the retransmission times of the GF data and/or the Modulation and Coding Scheme (MCS) adopted for transmitting the GF data. Since the RIS can improve the quality of a radio link, the setting of the RIS at the terminal can improve the reliability of the 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 the conflict of the GF transmission resources, and can also improve the reliability of GF initial 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 different terminals have different RIS capabilities, the terminals can inform the network device of the RIS capabilities of the terminals, so that the network device can allocate appropriate GF transmission resources to the terminals according to the RIS capabilities of the terminals.

In some embodiments, the terminal may actively inform the network device of the terminal's RIS capabilities. For example, the terminal is provided with the RIS, but the RIS has a fault, the terminal is changed from having the RIS capability to not having the RIS capability, and the terminal sends second capability information to the network equipment, wherein the second capability information is used for indicating that the terminal does not have the RIS capability; or, the terminal is changed from not having the RIS capability to having the RIS capability, and the terminal transmits 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 transmits the first capability information to the network device, wherein the RIS capability request message is used for requesting the terminal to inform whether the terminal has RIS capability.

In a possible implementation, the number of GF transmission resources with which the terminal is configured is smaller than the number of GF transmission resources with which a terminal without RIS capability is configured. Since the network device configures fewer GF transmission resources for the RIS-capable terminal, the possibility of transmission failure due to resource collision that may be caused by multiple terminals sharing the resources can be reduced. And the needed GF transmission resources are less, thereby saving the transmission resources.

In one possible implementation, the GF transmission parameter includes a number of retransmissions of GF data to be transmitted by the terminal, the number of retransmissions being smaller than a first preset value, the first preset value being a number of retransmissions configured by a terminal not having RIS capability;

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

In the embodiment of the present application, the mode of transmitting GF on the GF transmission resource by the terminal is also different according to the GF transmission parameter according to the transmission rate of GF data.

Illustratively, the GF data is first type data, the terminal adopts an RIS individual transmission mode to transmit the GF data on GF transmission resources according to GF transmission parameters, wherein, the transmission rate of the first type data is less than or equal to a first preset threshold, the RIS individual transmission mode comprises that the terminal couples signals carrying the GF data to the RIS, adjusts the amplitude and/or the phase of the RIS, and reflects or refracts the signals to the network equipment through the RIS after adjusting the amplitude and/or the phase; alternatively, the first and second electrodes may be,

illustratively, the GF data is a second type of data, and the terminal transmits the GF data on the GF transmission resource by using an RIS assisted transmission mode according to the GF transmission parameters, wherein the transmission rate of the second type of data is greater than a first preset threshold, the RIS assisted transmission mode includes that the terminal couples a signal carrying the GF data to the RIS, adjusts the amplitude and/or phase of the RIS, reflects the signal to the network device through the RIS after adjusting the amplitude and/or phase, and sends the signal carrying the GF data to the network device through the antenna after the terminal processes the signal carrying the GF data through the baseband.

In the embodiment of the present application, for GF data with a large transmission rate, an RIS single transmission mode may be used to transmit the GF data, and if the transmission rate of the GF data is small, an RIS auxiliary transmission mode may be used to transmit the GF data. Thus, the reliability of GF data transmission is ensured, and the power consumption of the terminal can be reduced as much as possible.

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 a communication apparatus to implement functions required by the method, such as a chip or a system-on-chip. The following description will be given taking the communication device as a network device as an example. The method comprises the following steps:

the network equipment receives first capability information from a terminal and sends GF transmission parameters to the terminal, wherein the first capability information is used for indicating that the terminal has an RIS capability, the RIS capability is used for indicating that the terminal is allowed to transmit data through the RIS, the terminal has the RIS capability, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters comprise the retransmission times of GF data and/or MCS 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 transfer resources that the network device configures for RIS-capable terminals is less than the number of GF transfer resources that the network device configures for RIS-incapable terminals.

the GF transmission parameters comprise MCS to be adopted for sending the GF data, the modulation order of the MCS is greater than a second preset value, and the second preset value is the modulation order of the MCS configured by the terminal without the RIS capability. The retransmission times configured by the network equipment for the terminals with RIS capability are less than the retransmission times configured by the network equipment for the terminals 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 less than the number of retransmissions configured by the network device for the second terminal, the first terminal having RIS capability and the second terminal having RIS capability, wherein,

the RIS maximum gain of the first terminal is greater than the RIS maximum gain of the second terminal; alternatively, the first and second electrodes may be,

the maximum RIS gain of the first terminal is equal to the maximum RIS gain of the second terminal, and the RIS area of the first terminal is larger than that of the second terminal; alternatively, the first and second electrodes may be,

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 number of RIS units of the first terminal is greater than the number of RIS units of the second terminal.

In a third aspect, the present application provides a communication device, which may be a terminal or a communication device capable of supporting the terminal to implement the functions required by the method, such as a chip or a system-on-chip. The functions can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

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

the transceiver is used for sending first capability information to a network device, receiving an authorization-free GF transmission parameter from the network device and sending the GF transmission parameter to the processor, wherein the first capability information is used for indicating that the terminal has an RIS capability, and the RIS capability is used for indicating that the terminal is allowed to transmit data through the RIS;

the processor is used for acquiring 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 such that a beam of the first transmission signal is directed to a network device.

In one possible implementation, 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 used to adjust a phase and/or 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 a possible implementation manner, 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 a GF transmission resource 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 a first type of data, the first data processing module obtains the GF data, where a transmission rate of the first type of data is less than or equal to a first preset threshold;

and if the GF data is of a second type, the second data processing module acquires the GF data, wherein the transmission rate of the second type of data is greater than the first preset threshold.

In a possible implementation manner, the transceiver includes a radio frequency integrated circuit, a radio frequency front end module, and an antenna, where the radio frequency integrated circuit is connected to the second data processing module and is configured to send 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 via the radio frequency integrated circuit, the radio frequency front end module, to the antenna, which is used to couple the second transmission signal to the RIS.

In a 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 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 to the antenna, and the third end of the radio frequency front end module is connected to the RIS through the switch;

the switch is used for controlling a channel between the radio frequency front-end module and the RIS to be in an opening state or a disconnection state; when the switch controls the channel between the radio frequency front-end module and the RIS to be in the 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 a channel 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 used to couple 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 used to control the switch to open a path between the radio frequency front end module and the RIS; alternatively, the first and second electrodes may be,

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 used to control the switch to disconnect a path between the radio frequency front end module and the RIS.

In a fourth aspect, the present application provides a communication apparatus, which may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, such as a chip or a system-on-chip. The functions can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

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

the transceiver module is further configured to send the GF transmission parameters determined by the processing module to the terminal, where the terminal has an RIS capability, the GF transmission parameters are configured according to the RIS capability of the terminal, and the GF transmission parameters include the number of retransmissions of GF data and/or an MCS to be used for sending GF data.

In one possible implementation manner, the GF transmission parameter includes a retransmission number of GF data, the retransmission number is smaller than a first preset value, and the first preset value is a retransmission number configured by a terminal without RIS capability;

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

In a possible implementation, the processing module configures the number of GF transmission resources for the terminal to be less than the number of GF transmission resources configured for terminals without RIS capability.

In one possible implementation, the number of retransmissions configured by the processing module for a first terminal having RIS capability is less than the number of retransmissions configured by the processing module for a 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 greater than the RIS area of the second terminal; alternatively, the first and second electrodes may be,

The processing module in the fourth aspect may perform corresponding functions in the second aspect and/or the method example of the second aspect, which is specifically described in detail in the method example and is not described herein again.

In a fifth aspect, the present application provides a communication device, which may be the communication device in the third aspect or the fourth aspect of the foregoing 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, a processor and optionally a memory. Wherein the memory is used for storing computer programs or instructions or data, the processor is coupled with the memory and the communication interface, and when the processor reads the computer programs or instructions or data, the communication device is caused to execute the method executed by the terminal or the network equipment in the above method embodiments.

In a sixth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory and/or a communication interface, and is configured to implement the method in the first aspect or the second aspect. In one possible implementation, the system-on-chip further includes a memory for storing program instructions and/or data. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

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

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

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

Drawings

Fig. 1 is a schematic diagram of a network architecture suitable for use in the embodiments of the present application;

FIG. 2 is a schematic diagram of the working principle of the RIS provided by the embodiments of the present application;

fig. 3 is a schematic flowchart of an authorization-exempt transmission method according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a process 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 flowchart 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 a 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 clearer, 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 available resources of the terminal are configured in advance, when the terminal needs to transmit data, the terminal does not need to transmit an uplink scheduling request for requesting resource allocation to the network side equipment, so that the time delay and the 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 several parameters for GF transmission. For example, the configuration information is used to configure all transmission resources and transmission parameters such as time-frequency resources and values of the number of repeated transmissions K. The time frequency resource configuration comprises a time frequency resource configuration period, a time domain resource and/or a frequency domain resource position to be used by the terminal in one period, and the like. It should be understood that the terminal has low reliability for data transmission in a single time, so that multiple transmissions can be repeated to improve the success rate of data transmission. And after receiving the configuration information, the terminal can perform data transmission on the configured GF time-frequency resources according to the configured transmission parameters.

However, the performance 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 terminal GF transmission will fail. This requires the terminal to retransmit the data to be transmitted (which may be referred to as GF retransmission for short) to improve the performance of GF transmission. For example, after the terminal performs random backoff, the terminal may perform GF retransmission on time-frequency resources, or after the terminal performs random backoff, the terminal may perform GF retransmission on space-frequency resources. Illustratively, the terminal performs GF retransmission on an original hybrid automatic retransmission request (HARQ) resource, or the terminal performs GF retransmission on other HARQ resources. For example, the network side device maps the collided terminals to other HARQ resources of the current or other access areas according to the current state (for example, the activated users are distributed in each access area), and informs the mapping rule of the terminals to other HARQ resources through high-layer signaling, so that the terminals perform GF retransmission on other HARQ resources. Illustratively, after the terminal performs random backoff, GF retransmission is performed on the original multi-antenna resource (space-frequency resource), or GF retransmission is performed on other multi-antenna resources in the current access area or other resources in the access area of other multi-antenna resources by the terminal according to a 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 the GF initial transmission cannot be guaranteed. In view of this. The embodiment of the application provides a GF transmission method, which is used for improving the reliability of GF initial transmission.

The technical scheme provided by the embodiment of the application can be applied to a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a New Radio (NR) communication system, and the like, which support unlicensed transmission. Of course, the technical solution provided in the embodiments of the present application may also be applied to a machine to machine (M2M) network, an internet of things (IoT) network, or other networks. It may also be applied to inter-device links, such as device to device (D2D) links. The D2D link may also be referred to as sidelink, where the sidelink may also be referred to as an edge link or a sidelink, etc. In the embodiments of the present application, the above terms all refer to links established between devices of the same type, and have the same meaning. The devices of the same type may be links from a terminal to the terminal, links from a base station to a base station, links from relay nodes to relay nodes, and the like, which are not limited in this 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, and the 6 terminals are 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 only an example, and may be more or less, and the network architecture may further include other network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in fig. 1. The network device is an access device of the terminal through a wireless access network, and may be a base station.

The network device is an entity, such as a new generation base station (gbnodeb), in the network side for transmitting or receiving signals. The network device may be a device for communicating with the mobile device. The network device may be an AP in a Wireless Local Area Network (WLAN), an evolved Node B (eNB) or eNodeB in a Long Term Evolution (LTE), or may also include a next generation Node B (gNB) in a 5G NR system, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved Public Land Mobile Network (PLMN) network, or a gNB/gNB in the NR system. In the following, the network device is a gNB as an example.

The gNB may include an antenna, a Base Band Unit (BBU) and a Remote Radio Unit (RRU). The BBU may be connected to the RRU through a Common Public Radio Interface (CPRI) or an enhanced CPRI (enhanced CPRI, eccri), and the RRU may be connected to the antenna through a feeder line. The antenna may be a passive antenna, which is separate from the RRU and may be connected thereto by a cable. Or the antenna may be an Active Antenna Unit (AAU), that is, the antenna unit of the AAU and the RRU are integrated together. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions.

In some deployments, the gNB may include a Centralized Unit (CU) and a Distributed Unit (DU). The CU implements part of the function of the gNB and the DU implements part of the function of the gNB, for example, the DU may be used to implement transceiving of radio frequency signals, conversion of radio frequency signals to baseband signals, and part of baseband processing. The CU may be used to perform baseband processing, control the base station, etc. In some embodiments, the CU is responsible for handling non-real time protocols and services, implementing Radio Resource Control (RRC), Packet Data Convergence Protocol (PDCP) layer functions. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or transmitted by the DU and the AAU under this architecture. It is to be 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 (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

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 connection capability, or other processing device connected to a wireless modem. Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones), computers, and data cards, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks or the internet via a radio access network (e.g., a RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), tablet computers (pads), and computers with wireless transceiving functions. A wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a Mobile Station (MS), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a Subscriber Station (SS), a user terminal device (CPE), a terminal (terminal), a User Equipment (UE), a Mobile Terminal (MT), etc. The wireless terminal device may also be a wearable device and a next generation communication system, e.g. a terminal in a 5G network or a terminal in a Public Land Mobile Network (PLMN) network for future evolution, a terminal in an NR communication system, etc.

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

Generally, poor transmission link quality or GF transmission resource collision will cause the terminal GF to fail transmission. This requires the terminal to retransmit the data to be transmitted (which may be referred to as GF retransmission for short) to improve the performance of GF transmission. Although the performance of GF transmission can be improved by GF retransmission, the reliability of the GF initial transmission cannot be guaranteed.

In view of this, in the embodiment of the present application, a reconfigurable intelligent interface (RIS) may be set at the terminal, and since the RIS can improve the coverage of the wireless network, the quality of the transmission link may be improved, thereby improving the reliability of the GF initial transmission. In addition, the network device can configure the GF transmission resources based on the RIS capability of the terminal, thus reducing the conflict of GF transmission resources and further improving the reliability of GF initial transmission.

It is understood that a 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 aperiodic). Because the basic units and the arrangement mode can be designed at will, the limitation that the traditional material is difficult to accurately control at an atomic or molecular level can be broken through, and the unconventional medium parameters which can not be realized by the traditional material and the traditional technology, such as medium parameters including both positive dielectric constant and negative dielectric constant, can be constructed. The material with the extraordinary medium parameters can be called as the metamaterial, and the metamaterial can be called as the digital electromagnetic metamaterial or the electromagnetic coding metamaterial in some embodiments because the electromagnetic wave is controlled by changing the spatial arrangement of the digital coding units, namely the characteristics of the electromagnetic field at a specific spatial position can be controlled by changing the state distribution of the basic units.

For example, please refer to fig. 2, which is a schematic diagram of the working principle of RIS. As shown in fig. 2, the RIS includes 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 received radio waves. It is understood that radio waves propagate from one medium to another medium having a different refractive index, and refraction occurs in addition to reflection, so the RIS can change the reflection phase difference of the radio waves. It can also be understood that RIS causes radio waves to follow generalized snell's law on reflective or refractive interfaces. That is, the RIS may cause the reflection angle of the radio wave to be unequal to the incident angle. As shown in fig. 2, the RIS can make the reflection angle of the radio wave be a reflection angle 2, relative to a conventional surface (the reflection angle of the radio wave is a reflection angle 1). With respect to traditional surfaces, RIS has the ability to shape radio waves according to generalized snell's law.

Specifically, the RIS unit is 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 is to be understood that the reflection coefficient of each RIS unit is different, and the reflection angle or refraction angle of the radio wave by the RIS unit is also different. That is, the plurality of RIS units are controlled to adjust the amplitude and/or phase of the received signals, respectively, and the RIS can adjust the reflection angle or refraction angle of the radio wave, thereby cooperatively realizing fine three-dimensional (3D) passive beamforming for directional signal enhancement or nulling.

In some embodiments, the RIS unit can be controlled to make amplitude and/or phase adjustments to the received signals by controlling the on/off state (on state or off state) of the PIN diode connected to the RIS unit. For example, by applying different bias voltages to the PIN diodes, the PIN diodes are in an open state or in a closed state, i.e. the RIS units connected to the PIN diodes are in an open state or in a closed state. The RIS comprises a plurality of RIS units in different states, and the RIS adjusts the amplitude and/or phase of the received signal by different amounts, so that the reflection coefficient of the RIS is different. The adjustment of the RIS module to the amplitude and/or phase of the received signal can be controlled by controlling the state of the RIS unit, for example, the reflection phase of the RIS to the radio waves is 180 degrees different, and the reflection coefficient of the RIS is controlled. Therefore, the reflection angle of the radio wave by the RIS is not equal to the incidence angle, and the directional beam forming is realized. The different reflection angles of the RIS to the wireless wave cause the wave beam direction to be different, thus can promote the coverage and the system capacity of the wireless network, so the RIS can be widely applied to the communication system. For example, in the embodiment of the present application, an RIS may be provided in the terminal, and the communication service may be implemented using the RIS.

The following describes an unlicensed transmission method provided in an embodiment of the present application with reference to the drawings.

In the following description, the method is applied to the network architecture shown in fig. 1 as an example. In addition, the method may be performed by two communication devices, for example, a first communication device and a second communication device, wherein the first communication device may be a terminal or a communication device capable of supporting the terminal to implement the functions required by the method, or the first communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, and may of course be other communication devices, such as a chip or a system-on-chip. The same is true for the second communication device, which may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or the second communication device may be a terminal or a communication device capable of supporting the terminal to implement the functions required by the method, but may also be other communication devices, such as a chip or a system of chips. For example, the first communication device may be a network device, the second communication device may be a terminal, or the first communication device is a terminal, the second communication device is a network device, or the first communication device is a network device, and the second communication device is a communication device capable of supporting the terminal to implement the functions required by the method, and so on.

For convenience of introduction, in the following, the method is taken as an example performed by a terminal and a base station, that is, the first communication device is a base station and the second communication device is a terminal. Since the technical solution provided by this embodiment is applied to the network architecture shown in fig. 1 as an example, 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 base station and the terminal may refer to the description of applying the method to the network architecture shown in fig. 1, and are not described herein again. The embodiment of the application is applicable to transmission of low-latency and high-reliability services, for example, transmission of ultra-reliable and low-latency communications (urlllc) services. The embodiments of the present application may be applicable to a GF transmission mechanism, and may also 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.

Please refer to fig. 3, which is a flowchart illustrating an unlicensed transmission method according to an embodiment of the present application, where the flowchart of the unlicensed transmission method is described as follows.

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 the RIS.

In the embodiment of the present application, the first capability information is used to indicate whether the terminal allows data to be transferred through the RIS, the terminal normally provided with the RIS allows data to be transferred through the RIS, and the terminal not provided with the RIS cannot naturally transfer data through the RIS. Allowing data transfer over the RIS can also be considered as RIS capable, so in some embodiments the first capability information can also be used to indicate whether the terminal has RIS capability, referred to as RIS capability information. It should be understood that a terminal provided with an RIS has an RIS capability, and if a certain terminal is not provided with an RIS, the terminal does not have the RIS capability.

The embodiment of the application aims to improve the reliability of GF initial transmission, therefore, the embodiment of the application can set an 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 of the 6 terminals may have an RIS and some of the terminals may not have an RIS, but the base station does not know which terminals have an RIS capability. In a possible implementation, the terminal may send first capability information of the terminal to the base station, the first capability information being usable to indicate whether the terminal has RIS capability. Therefore, the base station can determine whether the terminal has the RIS capability according to the received first capability information, and further determine how to allocate GF transmission resources for the terminal according to the determined result, thereby reducing the conflict of the GF transmission resources of a plurality of terminals as much as possible and improving the reliability of GF initial transmission.

In the embodiment of the present application, the terminal may actively notify the base station of the first capability information of the terminal, or may send the first capability information to the base station according to a request of the base station. Illustratively, the terminal sends the first capability information to the base station at the request of the base station, for example, the base station sends an RIS capability request message to the terminal, and 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 is included in the terminal, and the terminal is made to have the RIS capability by replacing the RIS or the like. The terminal may transmit the first capability information to the base station when the first capability information is updated. For example, the terminal does not have the RIS capability initially, and thereafter the terminal has the RIS capability, i.e., the terminal changes from not having the RIS capability to having the RIS capability, the terminal transmits the first capability information to the base station.

The implementation form of the first capability information is not limited in the embodiment of the present application, and in a possible implementation manner, the first capability information may be carried on one or more fields of an existing signaling, which is favorable for compatibility with the existing signaling. For example, the first capability information is carried in Radio Resource Control (RRC) signaling, medium access control element (MAC CE) signaling, Uplink Control Information (UCI) signaling, and the like. The one or more fields may be a field defined by RRC signaling, a field defined by MAC CE signaling, or a field defined by UCI signaling, or may be a newly defined RRC field, MAC CE field, or UCI field. The embodiments of the present application are not limited thereto. For example, in some embodiments, the first capability information may also be carried in newly defined signaling, and in other embodiments, the first capability information may be carried in the same signaling as the capability information of the terminal, that is, the signaling for carrying the capability information of the terminal is used. 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.

Illustratively, the first capability information may be carried in a first field of RRC signaling, where the first field may occupy 1bit (bit), and if the first field carries "0" to indicate that the terminal has RIS capability, correspondingly, the first field carries "1" to indicate that the terminal does not have RIS capability. Or the first field carries "1" to indicate that the terminal has the RIS capability, and correspondingly, the first field carries "0" to indicate that the terminal does not have the RIS capability.

Illustratively, the first capability information may include parameters for indicating the RIS capability, such as one or more of a RIS maximum gain, an area size of the RIS, and a number of RIS units included by the RIS. It should be understood that if the maximum RIS gain set by a terminal is larger, the terminal has a stronger ability to reflect or refract signals. If the RIS maximum gain of a plurality of terminals is the same, the larger the area of the RIS, the stronger the terminal's ability to reflect or refract signals. If the RIS maximum gains of a plurality of terminals are the same and the RIS areas of the plurality of terminals are the same, the terminals having the larger number of RIS units have a stronger ability to reflect or refract signals. If the first capability information includes a plurality of kinds of the RIS maximum gain, the area size of the RIS, and the number of RIS units, the first capability information may be carried in one field or may carry a plurality of fields. For example, the first capability information is carried in RRC signaling, the RRC signaling includes a first field, and the first capability information is carried in the first field. For example, the first capability information includes an RIS maximum gain, an area size of the RIS, and a number of RIS units, the RRC signaling may include a first field, a second field, and a third field, wherein 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. If the first capability information includes the RIS capability parameter, the terminal can be defaulted to having the RIS capability.

For example, the implementation form of the first capability information may also be a combination of the two examples. That is, the first indication information includes both a parameter for indicating the RIS capability and 1-bit information for indicating whether the terminal has the RIS capability. In this implementation, even if the RIS of the terminal fails and the first indication information includes the parameter of the RIS capability, it can be determined that the terminal does not have the RIS capability by the 1-bit information.

In the embodiment of the present application, the base station may configure a GF transmission resource and a GF transmission parameter 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. How the base station configures the GF transmission resources and GF transmission parameters for the terminal according to whether the terminal has the first capability information is described below.

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

Generally, to reduce the possibility of transmission failure due to resource collision that may be caused by multiple terminals sharing resources, the base station may allocate multiple GF transmission resources to the terminals. One base station can access a plurality of terminals, and if a plurality of GF transmission resources are 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 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 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 more GF transmission resources are required.

Specifically, referring to fig. 4, a detailed flow of the base station configuring the 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 the RIS capability.

S402, the base station determines that the terminal has the RIS capability, and the base station configures 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.

Since the RIS can improve the quality of wireless transmission, the terminals provided with the RIS transmit data through the RIS, and the success rate of data transmission can be improved, so that the base station can configure fewer GF transmission resources for the terminals provided with the RIS. If the base station receives the first capability information from the terminal indicating that the terminal has RIS capability, 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, and relatively speaking, fewer GF transmission resources are required, which may save 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 a plurality of terminals sharing the resource can be reduced. It should be understood that the number of GF transmission resources that the base station configures for the RIS capable terminal is smaller than the number of GF transmission resources that the base station configures for the RIS incapable terminal. For example, the base station configures M GF transmission resources for a terminal without RIS capability, and the base station configures N GF transmission resources for a terminal with 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, and the like, for the terminal according to the first capability information. Specifically, the number of retransmissions that the base station can configure for the RIS-capable terminal is less than the number of retransmissions that the base station configures for the non-RIS-capable terminal. The value of a Modulation and Coding Scheme (MCS) parameter configured by the base station for the terminal with RIS capability is greater than the value of an MCS parameter configured by the base station for the terminal without RIS capability. For example, the MCS configured by the base station for the non-RIS capable terminal is Quadrature Phase Shift Keying (QPSK), and the MCS configured by the base station for the RIS capable terminal is 16 Quadrature Amplitude Modulation (QAM).

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

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

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

Further, although the terminals have the RIS capability, the maximum RIS capability of different terminals may be different, and the strength of the signals forwarded by the terminals through the RIS is also different. Based on this, in some embodiments, the base station may also determine the number of GF transmission resources configured for the terminal according to the RIS capability size of the terminal. E.g. the terminal has RIS capability but the RIS capability is weaker, e.g. the RIS capability is smaller than or equal to a first preset threshold, then M1 GF transmission resources may be configured for the terminal. Conversely, if the RIS capability is stronger, e.g. the RIS capability is greater than a first preset threshold, then M2 GF transmission resources may be configured for the terminal, it being understood 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 base station configures GF transmission resources for the RIS-capable terminal less than the number of GF transmission resources configured for the RIS-incapable terminal by the base station. The number of GF transmission resources configured by the base station for the terminal with stronger RIS capability is less than that of GF transmission resources configured by the base station for the terminal with weaker RIS capability.

In some embodiments, the RIS capability size can be characterized by the RIS gain, also by the RIS area size, or also 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 capability 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 the RIS gain, the first preset threshold is the gain threshold; if the RIS capability size is characterized by the RIS area size, then the first preset threshold is the area threshold; if the RIS capability size is characterized by the number of RIS units, then the first preset threshold is the RIS units number threshold.

In other embodiments, the RIS area size or the number of RIS units can also be quantified as the 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 m1 dB. The number of RIS units is m, the corresponding RIS gain is m2dB, and then the RIS capability size is m2 dB.

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

In the embodiment of the present application, the base station may determine the size of the RIS capability of the terminal according to the first capability information, that is, the base station determines the size of the RIS capability according to one or more of the RIS maximum gain, the RIS area, and the number of RIS units of the terminal. The greater the maximum gain of the RIS of a terminal, the stronger the ability of the terminal to reflect or refract signals. If the RIS maximum gain of a plurality of terminals is the same, the larger the area of the RIS, the stronger the terminal's ability to reflect or refract signals. If the RIS maximum gains of a plurality of terminals are the same and the RIS areas of the plurality of terminals are the same, the terminals having the larger number of RIS units have a stronger ability to reflect or refract signals. From this point of view, it can also be considered that the base station configures the GF transmission resources and GF transmission parameters for the terminal according to one or more of the RIS maximum gain, the RIS area, and the number of RIS units of the terminal. For convenience of description, in the embodiments of the present application, a GF transmission parameter is taken as an example of the retransmission times.

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

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

TABLE 1

Preset RIS gain threshold	Number of GF transmission resources	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, according to Table 1, when G is greater than or equal to G₁And G is less than G₂The base station can determine to configure M for the terminal₁A base station can determine the value of the retransmission times configured for the terminal as N₁. If the maximum RIS gain of the terminal is G, according to Table 1, when G is greater than or equal to G_iThe base station can determine to configure M for the terminal_iA base station can determine the value of the retransmission times configured for the terminal as N_i。

If the maximum gains of the RISs of a plurality of terminals are the same, the larger the area of the RIS is, the stronger the capability of the terminal for forwarding signals is, and the stronger the intensity of the base station for receiving the signals is. In other embodiments, the base station may determine the GF transmission resources and GF transmission parameters based on the RIS maximum gain and the RIS area. For example, there are two terminals, which are a first terminal and a second terminal respectively, 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, then the number of GF transmission resources allocated by the base station for the first terminal is smaller than the number of GF transmission resources allocated by the base station for the second terminal, and the number of retransmissions allocated by the base station for the first terminal is smaller than the number of retransmissions allocated by the base station for the second terminal.

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

TABLE 2

It should be understood that if the RIS maximum gain of the terminal is G and the RIS area of the terminal is S, according to Table 2, when G is greater than G₁Less than or equal to G₂S is greater than S₁Less than or equal to S₂The base station can determine to configure M for the terminal₁A base station can determine the value of the retransmission times configured for the terminal as N₁. When G is greater than G₁Less than or equal to G₂S is greater than S_iThe base station can determine to configure M for the terminal_iA base station can be determined asThe value of the retransmission times configured by the terminal is N_i。

If the maximum RIS gains of a plurality of terminals are the same and the RIS areas of the plurality of terminals are the same, the more the number of RIS units is, the stronger the capability of the terminals for forwarding signals is, and the stronger the strength of the base station for receiving signals is. Based on this, in some embodiments, the base station may determine GF transmission parameters from RIS maximum gain, RIS area, and the number of RIS units. For example, there are two terminals, which are a first terminal and a second terminal respectively, 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 less 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 less 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 of a plurality of preset RIS area thresholds corresponding to each preset RIS gain threshold, 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 retransmission times of the preset RIS unit number may be defined, and as shown in table 3, the base station may determine a value of the retransmission times to be configured according to the corresponding relationship, the RIS maximum gain, the RIS area, and the number of the RIS unit of the terminal.

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 G₁Less than or equal to G₂S is greater than S₁Less than or equal to S₂L is greater than L₁Less than or equal to L₂The base station can determine to configure M for the terminal₁A base station can determine the value of the retransmission times configured for the terminal as N₁. When G is greater than G₁Less than or equal to G₂S is greater than S₁Less than or equal to S₂L is greater than L_iThe base station can determine to configure M for the terminal_iA base station can determine the value of the retransmission times configured for the terminal as N_i。

It should be noted that, tables 1 to 3 only take the GF transmission parameters as the number of GF transmission resources and the number of retransmissions as examples, and the embodiments of the present application do not limit the type and number of GF transmission parameters. For example, the GF transmission parameters may also include MCS, etc. It should be understood that the modulation order of the MCS that the base station configures for the RIS capable terminal is greater than the modulation order of the MCS that the base station configures for the non-RIS capable terminal.

In some embodiments, like tables 1-3, RIS capability levels may be defined, with different RIS capability levels corresponding to different numbers of GF transmission resources and GF transmission parameters. Wherein, the base station can determine the RIS capability grade according to the RIS capability size of the terminal. For example, 3 RIS capability levels can be divided, 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, then the RIS capability belongs to a first level; when the RIS capability is smaller than or equal to a first preset threshold and larger than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold, the RIS capability belongs to a second level; when the RIS capability is less than or equal to a second preset threshold, then the RIS capability belongs to a third level. It should be understood that the higher the RIS capability level, the less GF transmission resources the base station configures for the terminal, the less the number of 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 sends 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, the terminal and the base station may align beams, 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 strengths 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 position of the base station, and the terminal determines the beam direction according to the position of the base station. So the terminal can know the orientation of the base station after the terminal randomly accesses the base station. If the beam forming direction of the terminal RIS points to the direction of the base station, the strength of the base station receiving the signal from the terminal is strongest, and the reliability of GF data transmission can be ensured. The terminal with RIS capability can assist in transferring GF data through the RIS, and the reliability of GF data primary transfer is improved.

The terminal having the RIS capability can transmit the GF data to the base station via the RIS, can transmit the GF data to the base station via a radio frequency (antenna), and can transmit the GF data to the base station via the RIS and the antenna. For the convenience of distinguishing, the embodiment of the application reflects or refracts data to the base station through the RIS, and a transmission mode which is not sent to the base station through a traditional baseband transmission mode is called as an RIS single transmission mode; the transmission method of transmitting data to the base station through the RIS and the conventional baseband transmission method is called an RIS assisted transmission method. The conventional baseband transmission method may also be that the signal is transmitted via the rf circuit.

The terminal with the RIS capability can transmit data in an independent transmission mode through the RIS and can also transmit data in an auxiliary transmission mode through the RIS. For example, some communication services have high requirements on delay and reliability, and some communication services have low requirements on reliability. The traffic with lower delay requirement can be reflected or refracted to the base station through the RIS. Services with higher requirements on time delay and reliability, such as the urrllc service, can be reflected or refracted to the base station through the RIS, and can also be transmitted to the base station through the antenna after being processed by the baseband. The terminal determines the transmission method to be used according to the transmission rate of the GF data to be transmitted. For example, for GF data with a lower transmission rate, the terminal may use the RIS-only transmission mode, and for GF data with a higher transmission rate, the terminal may use the RIS-assisted transmission mode, which may take into account both the transmission rate requirement for GF data transmission and the energy consumption requirement of the terminal.

Please refer to fig. 5, which is a flowchart illustrating a process of transmitting GF data by a terminal, and a specific process is described as follows.

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

s502, the terminal determines that the GF data is the first type data, and the terminal determines that GF data transmission is carried out in an RIS single 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 the terminal transmits 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 according to the transmission rate size. For example, if the transmission rate of the GF data is small, the data may be defined as a first type of data, e.g., if the transmission rate is less than a preset threshold, the data is a first type of data, e.g., voice data. Conversely, if the transmission rate of the data is greater, the data may be defined as a second type of data, e.g., if the transmission rate is greater than or equal to a predetermined threshold, 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 relatively speaking, the second type of data may be referred to as large packet data.

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

The terminal determines that the GF data to be transmitted is the first type data and the terminal determines that the RIS-only transmission mode is employed. The terminal determines that the GF data to be transmitted is the second type data, and the terminal determines to adopt an RIS auxiliary transmission mode to transmit the GF data, 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 having an RIS capability performs data transfer using an RIS will be described below with reference to the drawings.

Please refer to fig. 6A, which is a schematic diagram of a possible structure of a terminal according to an embodiment of the present disclosure. The terminal includes a transceiver 601, a processor and a RIS 603. The transceiver 601 may be configured to send the aforementioned first capability information to the base station, so that the base station configures a GF resource for transmitting GF data for the terminal according to the first capability information, and configures a GF transmission parameter for the terminal. The processor may be configured to process the GF data, generate a transmission signal, and transmit the transmission signal to the RIS or the transceiver. The RIS603 can reflect and/or refract the received transmission signal, so that the beam of the transmission signal is directed to the base station, and the transmission signal is sent 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 the GF data to 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 a radio frequency signal (high frequency signal) to ensure that the signal can be transmitted through the antenna 6013. The rf front-end module 6012 may perform amplification, filtering, and other processing on the rf signal output by the rf integrated circuit 6011, and send the processed rf signal to the antenna 6013.

It is to be understood that the processor may determine to transmit the GF data through the RIS-assisted transport if the GF data is a first type of data, and may determine to transmit the GF data through the RIS-assisted transport if the GF data is a second type of data. The GF data is processed differently by the processor for different transmission modes. Thus, in the present embodiment, 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 the GF data into a first transmission signal, which may be transmitted through the RIS 603; the second data processing module 6022 is configured to process the 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 the baseband chip. Or the first data processing module 6021 may be a functional module or an algorithm module in the baseband chip. The first data processing module 6021 is connected to the RIS603, and is capable of converting a data signal to be transmitted into a binary bit stream, mapping the bit stream into a first transmission signal according to an MCS to be used for transmitting the data signal, such as QPSK, 16QAM, and the like, and coupling the first transmission signal to the RIS 603.

The RIS603 can be used for reflecting or refracting the incident signal, so that the reflected or refracted signal of the signal is directed to the base station, the strength of the base station for receiving the terminal signal is enhanced, and the reliability of GF initial transmission is improved. It should be understood that the beam forming direction of RIS603 points to the direction of the base station, and the strength of the signal received by the base station from the terminal is strongest. In order to ensure that the beam forming direction of the RIS603 points to the direction of the base station, the terminal in the embodiment of the present application may further include an RIS control module 604.

The RIS control module 604 is connected to the RSI module 603, and configured to generate a first control signal, where the first control signal is used to adjust an amplitude and/or a phase (i.e., a beam forming parameter) of a signal received by the RIS603, so as to implement reflection or refraction of the radio wave 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 beam forming parameter, that is, the reflection angle or refraction angle of the RIS603 to 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 a chip independent from the RIS603, or may be a functional module or an algorithm module integrated in the RIS603 as long as it can generate the first control signal. It should be understood that the first control signal is used to adjust the beam forming parameter of the RIS603, so that the RIS603 reflects or refracts the incident signal and points to the direction of the base station, so that the strength of the base station receiving the signal is strongest. After the terminal accesses the base station, the relative pointing direction between 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 according to the base station orientation determined during the random access procedure.

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 amplitudes. Illustratively, the first control signal occupies 1bit, and then the first control signal corresponds to voltage signals of 2 amplitudes (may be simply referred to as levels). The phase shift amount corresponding to the high level is 90 °, and the phase shift amount corresponding to the low level is 180 °. It should be understood that the high level and the low level are relative, and for example, a level greater than 1V may be defined as the high level, and a level less than or equal to 1V may be defined as the low level. When the first control signal is a high level signal, the RIS603 can shift the phase of the received signal by 90 °, and the reflection angle of the incident signal by the RIS603 can be changed. Illustratively, the first control signal occupies 2 bits, and can correspond to 4 levels of amplitude respectively. For example, the 4 amplitudes are amplitude 1, amplitude 2, amplitude 3 and amplitude 4, wherein amplitude 1 corresponds to a phase shift of 45 °, amplitude 2 corresponds to a phase shift of 135 °, amplitude 3 corresponds to a phase shift of 225 °, and amplitude 4 corresponds to a phase shift of 270 °. When the amplitude of the first control signal is amplitude 1, the RIS603 can shift the phase of the received signal by 45 °; when the magnitude of the first control signal is magnitude 4, the RIS603 can shift the phase of the received signal by 270 °, thereby changing the reflection angle of the incident signal by the RIS 603.

Note that, if the RIS603 points to the base station, the first data processing module 6021 may directly transmit the first transmission signal to the RIS 603. If the phase and/or amplitude of the RIS603 needs to be adjusted, the RIS control module 604 generates a first control signal, and adjusts the phase and/or amplitude of the RIS603 through the first control signal.

It should be understood that the RIS single transmission mode, as indicated by the dashed box including the first data processing module 6021 and the RIS control module 604 in fig. 6A, 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 mode. Since data does not need to be transmitted through a conventional baseband transmission method, the rf integrated circuit 6011 and the rf front-end module 6012 may be turned off to reduce power consumption of the terminal.

In addition, although the conventional baseband transmission scheme supports multiple carriers, it is not possible to excite an RIS single transmission by using a multi-carrier signal supported by the transmission baseband transmission scheme, so that an excitation source for exciting the RIS603 can be provided in the terminal, and the excitation source can generate a single-carrier signal for exciting the RIS603, which is relatively simple.

If the GF data is of the second type, the processor may determine to transmit the GF data using RIS assisted transfer. In this case, the processor determines to process the GF data into a first transmission signal by the first data processing module 6021, to process the GF data into a second transmission signal by the second data processing module 6022, and to output the second transmission signal to the transceiver 601. That is, the terminal can transmit data signals to the base station through the transceiver 601 in addition to reflecting the data signals to the base station through the RIS 603. Because the RIS auxiliary transmission mode can support 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 assisted transmission mode, the second data processing module 6022 is connected to the radio frequency integrated circuit 6011, the radio frequency integrated circuit 6011 is connected to the radio frequency front end module 6012, and the radio frequency front end module 6012 is connected to the RIS603 and the antenna 6013. If the radio frequency front end module 6012 is connected with the RIS603, the data signals output by the radio frequency front end module 6012 may be coupled to the RIS 603. If the rf front-end module 6012 is connected to the antenna 6013, a data signal output from the rf front-end module 6012 may be transmitted to the antenna 6013, and the antenna 6013 radiates the data signal and couples the data signal to the RIS603 (illustrated by a dotted line in fig. 6A). That is, in the embodiment of the present application, the data signal output by the radio frequency front end module 6012 may be coupled to the RIS603 through a wire connected to the RIS603, and may also be coupled to the RIS603 through an antenna 6013. In contrast, the wire-feed coupling method may be referred to as a wire-feed coupling method, and the method of coupling the data signal to be transmitted to the RIS0613 via the antenna 6013 may be referred to as an air-feed coupling method. Illustratively, the data signal to be transmitted can 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 close to the housing, so that a signal radiated from the antenna 6013 is coupled to the RIS 603.

The terminal may determine to transmit GF data in a line feed coupled manner and/or an air feed coupled manner. For example, when the transmission path from the antenna 6013 to the base station is blocked or the link quality is not good, it may be determined to use the air-feed coupling method, that is, to couple the data signal to the RIS603 by using the antenna 6013 (illustrated by a dotted line in fig. 6A). For example, in order to improve the reliability of the primary transmission of GF data, the terminal may determine to use a line feed coupling mode and an empty feed coupling mode, that is, a signal reflected or refracted by RIS603, one from radio frequency front end module 6012 and one from antenna 6013, and for the base station, the intensity of receiving the signal from RIS603 is higher. Or the terminal may also determine to use the line feed coupling method and the antenna 6013 to transmit the GF data, so that for the base station, two paths of signals may be received, where one path of signal is from the signal reflected by the RIS603 and the other path of signal is from the signal transmitted by the terminal through the antenna 6013, so that the quality of a 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 time delay.

Illustratively, the terminal determines that the quality of the communication link between the antenna 6013 and the base station is poor, and determines to couple the second transmission signal to the RIS603 by using a wire feeder coupling method. Specifically, the second data processing module 6022 determines to transmit the second transmission signal to the RIS603 in a line feed-coupled manner. In a possible implementation manner, the radio frequency front end module 6012 is connected to the RIS603 through a wire, and the radio frequency front end module 6012 is not connected to the antenna 6013. In this case, the path between the radio frequency front end module 6012 and the RIS603 is in an open state, and the path between the radio frequency front end module 6012 and the antenna 6013 is in a disconnected state. The radio frequency integrated circuit 6011 transmits the second transmission signal to the radio frequency front end module 6012, and the radio frequency front end module 6012 transmits the data signal to the RIS 603. I.e. the data signals are sent to the RIS603 by means of a wire feed-coupling.

For another example, the second data processing module 6022 may also determine that the second transmission signal is coupled to the RIS603 by air-feed coupling. In this case, the radio frequency front end module 6012 may not be connected to the RIS603, and the radio frequency front end module 6012 may be connected to the antenna 6013. For example, the rf front end module 6012 may be coupled to the antenna 6013 through an rf switch within the rf front end module 6012. In this case, the path between the radio frequency front end module 6012 and the RIS603 is in a disconnected state, and the path between the radio frequency front end module 6012 and the antenna 6013 is in an open state. The radio frequency front end module 6012 transmits the second transmission signal to the antenna 6013, and the antenna 6013 transmits the second transmission signal to the RIS 603. I.e. the second signal is sent to the RIS603 by means of air-feed coupling.

It should be understood that if the RIS603 is disposed on the side of the antenna 6013 that is closer to the housing, the signal radiated by the antenna 6013 will be coupled to the RIS 603. If the RIS603 is far away from the antenna 6013, the signal radiated by the antenna 6013 may not couple to the RIS 603. In this case, if the second data processing module 6022 can also generate a control signal that can be used to control the beamforming direction of the antenna 6013 so that the signal radiated by the antenna 6013 is coupled to the RIS 603.

For another example, the second data processing module 6022 may also determine that the first signal is coupled to the RIS603 in a line-feed coupling manner and a null-feed coupling manner. In a possible implementation manner, please refer to fig. 6B, which is another possible structural diagram of the terminal. The radio frequency front end module 6012 is connected with the RIS603 through a wire, and the radio frequency front end module 6012 is connected with an antenna 6013. Since the second transmission signal output by the second data processing module 6022 may be transmitted via the radio frequency front end module 6012 and the RIS603, or may be transmitted via the radio frequency front end module 6012 and the antenna 6013. In this case, a switch 6014 may be disposed at the terminal, where the switch 6014 may be configured to control a path between the radio frequency front end module 6012 and the RIS603 to be in an open state or a disconnected state, and control a path between the radio frequency front end module 6012 and the antenna 6013 to be in an open state or a disconnected state, that is, the switch 6014 is used 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.

The embodiment of the present application does not limit the specific implementation form of the switch 6014, 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 multi-pole multi-throw switch. The switch 6014 may also be a plurality of switches, such as a plurality of single pole single throw switches, or the switch 6014 may also be a plurality of multi pole multi throw switches.

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

Certainly, the switch 6014 may also control a path between the radio frequency front end module 6012 and the RIS603 to be in a disconnected state, and a path between the radio frequency front end module 6012 and the antenna 6013 to be in an open state, that is, the second transmission signal is sent in an air-feed coupling manner. For example, the second data processing module 6022 may generate a third control signal, which may be used to control the switch 6014 to disconnect the path between the radio frequency front end module 6012 and the RIS603 and open the path between the radio frequency front end module 6012 and the antenna 6013, so that the signal output by the second data processing module 6022 passes through the radio frequency integrated circuit 6011, the radio frequency front end module 6012, and the antenna 6013 in sequence, and the antenna 6013 couples the second transmission signal to the RIS603 and 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 in an open state. When the switch 6014 controls the path between the radio frequency front end module 6012 and the RIS603 to be in an open state. For example, the second data processing module 6022 may be configured to generate a fourth control signal, which may control the switch 6014 to open a path between the rf front-end module 6012 and the RIS603, and open a path between the rf front-end module 6012 and the antenna 6013. When a path between the radio frequency front end module 6012 and the antenna 6013 is in an open state and a path between the radio frequency front end module 6012 and the RIS603 is in an open state, RIS auxiliary transmission can be realized in a line feed coupling mode and an idle feed coupling mode.

When the switch 6014 controls the path between the radio frequency front end module 6012 and the RIS603 to be in a disconnected state, and the path between the radio frequency front end module 6012 and the antenna 6013 is in an open state, further, the second data processing module 6022 may determine which antenna 6013 of the terminal transmits the second transmission signal. For example, the second data processing module 6022 may generate signals for controlling the switching of the plurality of channels of the switch 6014 to implement the selective communication of the antenna 6013.

The switch 6014 may be located within the rf front end module 6012, and the switch 6014 may be independent from the rf switch in the rf front end module 6012 or may be integrated with the rf switch. For example, a channel for controlling on/off of the RIS603 may be added to a radio frequency switch in the radio frequency front end module 6012, where the added channel may be used to control a path between the radio frequency front end module 6012 and the RIS603 to be in an open state or a disconnected state. Therefore, the improvement on terminal hardware can be reduced, and the terminal can couple the first signal to the RIS in an air-fed coupling mode or a line-fed coupling mode or in the air-fed coupling mode and the line-fed coupling mode, so that the method is more flexible.

One channel of the switch 6014 controls a path between the radio frequency front end module 6012 and the RIS603 to be in an open state or a disconnected state, and the other channels of the switch 6014 control a path between the radio frequency front end module 6012 and the antenna 6013 to be in an open state or a disconnected state.

It should be noted that if the communication link between the antenna 0613 and the base station is of good quality, 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 transmitted 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 signal received by the base station has two paths, one path is from RIS603, and the other path is from antenna 6013, which further improves the reliability of data transmission.

It should be understood that if GF data to be transmitted by the terminal is changed from the first type data to the second type data, the data transmission mode may be switched from the RIS-only transmission mode to the RIS-assisted transmission mode, for example, the data is processed by the second data processing module 6022. If the GF data to be transmitted by the terminal is changed from the second type data to the first type data, it can be switched from the RIS assisted transmission mode to the RIS single 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 initial transmission of the GF data can be improved, the retransmission times of the GF data are further reduced, and the transmission delay of the GF data is reduced. The base station allocates GF transmission resources for the terminal according to the RIS capability of the terminal and configures GF transmission parameters, thereby reducing the conflict of GF transmission resources, improving the reliability of the initial transmission of GF data and reducing the transmission delay. It should be understood that if the RIS-capable terminal is configured with less GF transmission resources, for example, the RIS-capable terminal is configured with one GF transmission resource, GF data is retransmitted on the originally configured GF transmission resource when the initial transmission of GF data fails. In contrast, since a terminal without RIS capability determines that GF data is to be transmitted and a plurality of GF transmission resources are allocated, in order to increase the success rate of data transmission, GF data may be retransmitted on a GF transmission resource different from that for the initial transmission of GF data.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of the terminal, the network device, and the interaction between the terminal and the network device. In order to implement the functions in the method provided by the embodiments of the present application, the terminal and the network device may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module.

The following describes a communication device for implementing the above method in the embodiment of the present application with reference to the drawings. Therefore, the above contents can be used in the subsequent embodiments, and the 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 correspondingly implement the functions or steps implemented by the terminal or the network device in the above-described 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 with 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 method. The above units may be provided independently, or may be partially or wholly integrated.

In some possible embodiments, the communication device 700 can implement the behavior 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 a terminal. The transceiver module 720 may be used to perform all receiving or transmitting operations performed by the terminal in the embodiments shown in fig. 3 and 5, such as S301 and S303 in the embodiment shown in fig. 3, and/or other processes for supporting the techniques described herein. Wherein the processing module 710 is configured to perform all operations except transceiving operations performed by the terminal in the embodiments shown in fig. 3 and 5, such as S501-S503 in the embodiment shown in fig. 5, and/or other processes for supporting the techniques described herein.

In some embodiments, the transceiver module 720 is configured to send first capability information to the network device, the first capability information indicating that the communication apparatus 700 has an RIS capability, and receive GF transmission parameters from the network device, and transmit GF data on GF transmission resources according to the GF transmission parameters, the RIS capability indicating that the communication apparatus 700 is allowed to transmit data through 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 GF data and/or the MCS to be employed for transmitting 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 in the RIS.

As an optional implementation manner, the GF transmission parameter includes a retransmission number of GF data, where the retransmission number is smaller than a first preset value, and the first preset value is a retransmission number configured by a terminal without RIS capability;

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

As an alternative implementation, the number of GF transmission resources to which communication apparatus 700 is configured is smaller than the number of GF transmission resources to which a terminal without RIS capability is configured.

As an optional implementation manner, the GF data is a first type of data, the processing module 710 determines to use an RIS single transmission mode, 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 of data is less than or equal to a first preset threshold; the RIS individual transmission mode comprises the steps that signals carrying GF data are coupled to the RIS, the amplitude and/or the phase of the RIS are adjusted, and the signals are sent to the network equipment through the RIS after the amplitude and/or the phase are adjusted; alternatively, the first and second electrodes may be,

as an optional implementation manner, the GF data is a second type of data, the processing module 710 adopts an RIS assisted 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 a transmission rate of the second type of data is greater than the first preset threshold, the RIS assisted 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 the 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 related circuit components or communication interfaces 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 communication apparatus 700 can implement the behavior and functions of the network device in the above method embodiment. 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 a base station. 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. Wherein 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 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 the terminal, the first capability information indicating that the terminal has an RIS capability, the RIS capability indicating that the terminal is allowed to transmit data through the RIS, and transmit the GF transmission parameter determined by the processing module 710 to the terminal, the terminal having the RIS capability, the GF transmission parameter being configured according to the RIS capability of the terminal, the GF transmission parameter including a number of retransmissions of GF data and/or an MCS to be used for transmitting GF data.

As an optional implementation manner, the processing module 710 may configure the number of GF transmission resources for the terminal to be smaller than the number of GF transmission resources configured for the terminal without RIS capability.

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

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

Fig. 8 shows a communication apparatus 800 provided in this embodiment of the present application, where the communication apparatus 800 may be a terminal and may implement a function of the terminal in the method provided in this embodiment of the present application, or the communication apparatus 800 may be a network device and may implement a function of the network device in the method provided in this embodiment of the present application; the communication apparatus 800 may also be an apparatus capable of supporting a terminal to implement the corresponding functions in the method provided in the embodiment of the present application, or an apparatus capable of supporting a network device to implement the corresponding functions in the method provided in the embodiment of the present application. The communication device 800 may be a chip or a system-on-a-chip. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

In hardware implementation, the transceiver module 720 may be a transceiver, and the transceiver 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 supporting the communication apparatus 800 to implement the functions of the network device or the terminal in the methods provided by the embodiments of the present application. For details, reference is made to the detailed description in the method example, which is not repeated herein.

The communications apparatus 800 can also include at least one memory 830 for storing program instructions and/or data. The memory 830 is coupled with the processor 820. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 820 may operate in conjunction with the 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 communications apparatus 800 can also include a communication interface 810 for communicating with other devices over a transmission medium such that the apparatus used in the communications apparatus 800 can communicate with other devices. Illustratively, when the communication device is a terminal, the other device is a network device; or, when the communication device is a network device, the other device is a terminal. Processor 820 may transceive data using communication interface 810. The communication interface 810 may specifically be a transceiver.

The specific connection medium among the communication interface 810, the processor 820 and the memory 830 is not limited in the embodiments of the present application. In fig. 8, the memory 830, the processor 820 and the communication interface 810 are connected by a bus 840, the bus is represented by a thick line in fig. 8, and the connection manner among other components is only schematically illustrated and is not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus.

In the embodiments of the present application, the 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof, and may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A 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 directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory 830 may be a non-volatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (RAM), for example, a random-access 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 the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

The communication device in the above embodiments may be a terminal or a circuit, or may be a chip applied to a terminal or other combined device or component having the above terminal function. When the communication device is a terminal, the transceiver module may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module may be a processor, for example: a 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 system of chips, the transceiver module may be an input/output interface of the chip or the system of chips, and the processing module may be a processor of the chip or the system of chips.

Fig. 9 shows a simplified schematic of a communication device. For convenience of understanding and illustration, in fig. 9, the communication device is a base station as an example, and performs the functions of the network device in the above method embodiment.

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. The memory 921 is coupled to the processor 922 and can be used to store programs and data necessary for the communication device 900 to implement various functions. The processor 922 is configured to support the communication apparatus 900 to perform the corresponding functions in the above-described methods, which can be implemented by calling a program stored in the memory 921.

In particular, the transceiver 910 may be a wireless transceiver, and may be configured to support the communication apparatus 900 to receive and transmit signaling and/or data over a wireless air interface. The transceiver 910 may also be referred to as a transceiving unit or a communication unit, and the transceiver 910 may include one or more radio frequency units 912, such as Remote Radio Units (RRUs) or Active Antenna Units (AAUs), which may be 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 used for radiation and reception of radio frequency signals. Alternatively, the transceiver 910 may only include 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 of each other. As shown in fig. 9, the memory 921 and the processor 922 may be integrated in the control unit 920 of the communication apparatus 900. Illustratively, the control unit 920 may include a baseband unit (BBU) of an 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 (CU) in a base station under 5G and future radio access technologies. The control unit 920 may be formed by one or more antenna panels, where a plurality of antenna panels may support a radio access network (e.g., an LTE network) of a single access system, and a plurality of antenna panels may also support radio access networks (e.g., an LTE network, a 5G network, or other networks) of different access systems. The memory 921 and 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 multiple antenna panels. In addition, necessary circuitry may be provided on each antenna panel, for example, to enable coupling of the memory 921 and the processor 922. The above transceivers 910, processors 922, and memory 21 may be connected by a bus (bus) structure 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 rf unit, and the rf unit performs rf processing on the baseband signal and then transmits the rf signal in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device 900, the rf unit receives an rf signal through the antenna, converts the rf 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 can be used to perform the above steps performed by the transceiver module 720. And/or processor 922 may be used to call instructions in memory 921 to perform the steps performed by processing module 710 above.

Fig. 10 shows a simplified structural diagram of a terminal. For ease of understanding and 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 used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of apparatuses may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the device, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 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 a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the rf circuit with transceiving function may be regarded as a transceiving unit of the apparatus, and the processor with processing function may be regarded as a processing unit of the apparatus. 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, a transceiving device, etc. The processing unit 1020 may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing the receiving function in the transceiving unit 1010 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiving unit 1010 may be regarded as a transmitting unit, that is, the transceiving unit 1010 includes a receiving unit and a transmitting unit. Transceiver unit 1010 may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

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

For example, in one implementation, the 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 transceiver unit may be an input/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 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 embodiments may be the processor 1110 in fig. 11, and performs the corresponding functions. The processing module 710 in the above embodiments may be the transmit data processor 1120, and/or the receive data processor 1130 in fig. 11. Although fig. 11 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.

Fig. 12 shows another form of the present embodiment. The communication device 1200 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1203, an interface 1204. The processor 1203 completes the functions of the processing module 1310, and the interface 1204 completes the functions of the transceiver 1320. As another variation, the modulation subsystem includes a memory 1206, a processor 1203, and a program stored in the memory 1206 and executable on the processor, and the processor 1203 executes the program to implement the method of the terminal in the above method embodiment. It should be 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 can be connected to the processor 1203.

The embodiment of the present application further provides a communication system, and specifically, the communication system includes a network device and a terminal device, or may further include more network devices and a plurality of terminal devices. Illustratively, the communication system includes network devices and terminals for implementing the related functions of fig. 3, 4 and 5 described above.

The network devices are respectively used for realizing the functions of the related network parts of the above-mentioned fig. 3 and fig. 4. The terminal is used for realizing the functions of the terminal related to the above-mentioned fig. 3 and fig. 5. Please refer to the related description in the above method embodiments, which is not repeated herein.

Also provided in an embodiment of the present application is a computer-readable storage medium, which includes instructions, when executed on a computer, cause the computer to perform the method performed by the network device in fig. 3 and 4; or when running on a computer, causes the computer to perform the methods performed by the terminal of fig. 3 and 5.

Also provided in an embodiment of the present application is a computer program product, which includes instructions that, when executed on a computer, cause the computer to execute the method performed by the network device in fig. 3 and 5; or when running on a computer, causes the computer to perform the methods performed by the terminal of fig. 3 and 5.

The embodiment of the application provides a chip system, which comprises a processor and a memory, and 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 methods. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

It should be understood that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. 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 and c can be single or multiple.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first relaxation measurement policy and the second relaxation measurement policy are only for distinguishing different measurements, and do not indicate a difference in priority, importance, or the like between the two policies.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to 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 and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

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

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

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

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

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

Claims

1. An unlicensed transmission method, comprising:

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

the terminal receives an authorization-free GF transmission parameter from the network equipment, wherein the GF transmission parameter is configured according to the RIS capability of the terminal, and the GF transmission parameter comprises the retransmission times of GF data and/or a Modulation and Coding Strategy (MCS) adopted for sending the GF data;

and the terminal transmits GF data on GF transmission resources according to the GF transmission parameters.

2. The method of claim 1, wherein 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.

3. The method according to claim 1 or 2, wherein the GF transmission parameters include the number of retransmissions of GF data, which is smaller than a first preset value, which is the number of retransmissions that a RIS-incapable terminal is configured to be configured with;

4. The method according to any of claims 1-3, wherein the number of GF transport resources that the terminal is configured with is smaller than the number of GF transport resources that a non RIS capable terminal is configured with.

5. The method according to any of claims 1-3, wherein the terminal transmits GF data on GF transmission resources according to the GF transmission parameters, comprising:

the GF data is of a first type, the terminal adopts an RIS single transmission mode and transmits the GF data on GF transmission resources according to the GF transmission parameters, wherein the transmission rate of the first type of data is less than or equal to a first preset threshold; the RIS individual transmission mode comprises the steps that signals carrying GF data are coupled to the RIS, the amplitude and/or the phase of the RIS are adjusted, and the signals are sent to the network equipment through the RIS after the amplitude and/or the phase are adjusted; alternatively, the first and second electrodes may be,

the GF data is of a second type, the terminal adopts an RIS auxiliary transmission mode and transmits the GF data on GF transmission resources according to the GF transmission parameters, wherein the transmission rate of the second type data is greater than the first preset threshold; the RIS assisted transport mode includes coupling a signal carrying the GF data to the RIS, adjusting the magnitude and/or phase of the RIS, transmitting the signal to the network device through the RIS after adjusting the magnitude 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 network equipment receives first capability information from a terminal, wherein the first capability information is used for indicating that the terminal has an RIS capability, and the RIS capability is used for indicating that the terminal is allowed to transmit data through an RIS;

the network equipment sends an authorization-free GF transmission parameter to the terminal, wherein the GF transmission parameter is configured according to the RIS capability of the terminal, and the GF transmission parameter comprises the retransmission times of GF data and/or a Modulation and Coding Strategy (MCS) adopted for sending GF data.

7. The method of claim 6, wherein 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.

8. The method of claim 6, wherein the GF transmission parameters comprise a number of retransmissions of GF data that is less than a first preset value, the first preset value being a number of retransmissions that a RIS capable terminal is configured with;

9. The method according to any of claims 6-8, wherein the number of GF transport resources that the terminal is configured with is smaller than the number of GF transport resources that are configured for RIS-capable terminals.

10. The method of any of claims 6-9, wherein the number of retransmissions configured by the network device for a first terminal that is RIS capable is less than the number of retransmissions configured by the network device for a second terminal that is RIS capable, 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 used to adjust a phase and/or amplitude of the RIS.

13. The terminal of claim 11, 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 according to any of claims 11-13, wherein the processor further comprises a second data processing module, and wherein the second data processing module is 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.

15. The terminal according to claim 14, wherein the first data processing module obtains the GF data if the GF data is a first type of 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 used for sending the second transmission signal to the radio frequency front end module;

17. The terminal of any one of claims 14-16, wherein the second transmission signal is transmitted via the radio frequency integrated circuit, the radio frequency front end module, to the antenna, the antenna being for coupling the second transmission signal to the RIS.

18. The terminal of any of claims 15-17, wherein the transceiver further comprises a switch, one end of the rf ic is connected to the second data processing module, the other end of the rf ic is connected to the rf front-end module, and a first end of the rf front-end module is connected to the rf ic; the second end of the radio frequency front end module is connected to the antenna, and the third end of the radio frequency front end module is connected to the RIS through the switch;

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

20. A communication apparatus, characterized in that the communication apparatus 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 apparatus performs the method according to any of claims 1-5 or 6-10.

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