WO2024067827A1

WO2024067827A1 - Transmission method and apparatus, parameter determination method and apparatus and communication device

Info

Publication number: WO2024067827A1
Application number: PCT/CN2023/122737
Authority: WO
Inventors: 彭淑燕; 杨坤
Original assignee: 维沃移动通信有限公司
Priority date: 2022-09-30
Filing date: 2023-09-28
Publication date: 2024-04-04
Also published as: CN117858110A

Abstract

The present application relates to the technical field of communications, and discloses a transmission method and apparatus, a parameter determination method and apparatus and a communication device. The parameter determination method in embodiments of the present application comprises: a first device receives a first signal on the basis of a target parameter, and/or sends the first signal on the basis of the target parameter, wherein the target parameter comprises at least one of a receiving parameter of the first device and a sending parameter of the first device; and the first device sends and/or receives data information on the basis of first information, wherein the first information is determined from the target parameter on the basis of a measurement result of the first signal.

Description

Transmission method, parameter determination method, device and communication equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202211216001.0 filed in China on September 30, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a transmission method, a parameter determination method, an apparatus and a communication device.

Background technique

Reconfigurable Intelligent Surface(s) (RIS) devices can control the reflection/refraction direction to realize functions such as beam scanning/beam shaping.

RIS devices can be connected to base stations and user equipment (UE, also known as terminals) respectively, and RIS devices can forward base station signals to UE. In this process, the beam from the base station to the RIS device and the beam from the RIS device to the UE jointly determine the quality of the signal from the base station to the UE.

In the related art, the RIS device can only forward beams, so that the beams from the base station to the RIS device and the beams from the RIS device to the UE may not be aligned with each other, or the beams of the device are not properly selected, thereby reducing the data transmission quality from the base station to the UE and even causing communication failure.

Summary of the invention

The embodiments of the present application provide a transmission method, a parameter determination method, an apparatus, and a communication device, which can train the transmission parameters from a base station to a RIS device, and/or train the transmission parameters from a RIS device to a UE, so that the beam from the base station to the RIS device and the beam from the RIS device to the UE are aligned, or a suitable beam is selected, so as to improve the data transmission quality from the base station to the UE.

In a first aspect, a transmission method is provided, the method comprising:

The first device receives the first signal based on the target parameter, and/or sends the first signal based on the target parameter;

The target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device;

The first device sends and/or receives data information based on first information, wherein the first information is determined from the target parameter based on a measurement result of the first signal.

In a second aspect, a transmission device is provided, which is applied to a first device, and includes:

A first transmission module, configured to receive a first signal based on a target parameter, and/or send a first signal based on a target parameter; wherein the target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device;

The second transmission module is used to send and/or receive data information based on the first information, wherein the first information is The target parameter is determined based on a measurement result of the first signal.

In a third aspect, a transmission method is provided, the method comprising:

The third device receives the first signal and obtains a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device;

The third device sends the measurement result.

In a fourth aspect, a transmission device is provided, which is applied to a third device, and the device includes:

a measurement module, configured to receive a first signal and obtain a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device;

The first sending module is used to send the measurement result.

In a fifth aspect, a parameter determination method is provided, the method comprising:

The second device sends a first signal;

The second device receives a measurement result, where the measurement result is a measurement result obtained by receiving and/or measuring the first signal forwarded by the first device;

The second device determines first information from a target parameter based on the measurement result, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.

In a sixth aspect, a parameter determination device is provided, which is applied to a second device, and the device includes:

A second sending module, used for sending a first signal;

A first receiving module, used to receive a measurement result, where the measurement result is a measurement result obtained by receiving and/or measuring the first signal forwarded by the first device;

The first determination module is configured to determine first information from a target parameter based on the measurement result, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.

In the seventh aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect, the third aspect, or the fifth aspect are implemented.

In an eighth aspect, a first device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a first signal based on a target parameter, and/or send a first signal based on the target parameter; wherein the target parameter comprises at least one of the following: a receiving parameter of the first device, a sending parameter of the first device; the communication interface is also used to send and/or receive data information based on first information, wherein the first information is determined from the target parameter based on a measurement result of the first signal.

In the ninth aspect, a third device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a first signal and obtain a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device; the communication interface is also used to send the measurement result.

In a tenth aspect, a second device is provided, comprising a processor and a communication interface, wherein the communication interface is used to send a first signal and receive a measurement result, wherein the measurement result is a measurement result obtained by receiving and/or measuring the first signal forwarded by the first device; and the processor is used to determine the first signal from the target parameter based on the measurement result. Information, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.

In the eleventh aspect, a communication system is provided, comprising: a second device, a first device and a third device, wherein the first device can be used to execute the steps of the transmission method as described in the first aspect, the third device can be used to execute the steps of the transmission method as described in the third aspect, and the second device can be used to execute the steps of the parameter determination method as described in the fifth aspect.

In the twelfth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented, or the steps of the method described in the fifth aspect are implemented.

In the thirteenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the method as described in the first aspect, or the method as described in the third aspect, or the method as described in the fifth aspect.

In the fourteenth aspect, a computer program product is provided, wherein the computer program product is stored in a storage medium, and the computer program product is executed by at least one processor to implement the steps of the transmission method as described in the first aspect, or the computer program product is executed by at least one processor to implement the steps of the transmission method as described in the third aspect, or the computer program product is executed by at least one processor to implement the steps of the parameter determination method as described in the fifth aspect.

In an embodiment of the present application, in a scenario where the first device acts as a relay device between the second device and the third device, the first device receives the first signal based on the target parameter, and/or sends the first signal based on the target parameter. In this way, the beam of the first device can be trained, and data information can be sent and/or received based on the beam determined by the measurement result of the first signal during the training process. The beam from the second device to the first device and the beam from the first device to the third device can be aligned, or a suitable beam can be selected, thereby improving the data transmission quality from the second device to the third device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a wireless communication system to which an embodiment of the present application can be applied;

FIG2 is a schematic diagram of a network structure between a base station, a relay device and a terminal;

FIG3 is a flow chart of CSI-triggered beam training;

FIG4 is a flow chart of a transmission method provided in an embodiment of the present application;

FIG5 is a schematic diagram of a beam between a relay device, a network side device and a terminal;

FIG6 is a second schematic diagram of beams between a relay device, a network side device and a terminal;

FIG7 is a flow chart of another transmission method provided in an embodiment of the present application;

FIG8 is a flow chart of a parameter determination method provided in an embodiment of the present application;

FIG9 is a schematic diagram of the structure of a transmission device provided in an embodiment of the present application;

FIG10 is a schematic diagram of the structure of another transmission device provided in an embodiment of the present application;

FIG11 is a schematic diagram of the structure of a parameter determination device provided in an embodiment of the present application;

FIG. 12 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

1 shows a block diagram of a wireless communication system applicable to the embodiment of the present application. The wireless communication system includes a terminal 11, a network side device 12 and a RIS device 13, or further includes a RIS controller 14. The terminal 11 may be a mobile phone, a tablet computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR)/virtual reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle user equipment (VUE), a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (a home appliance with wireless communication function, such as a refrigerator, a television, a washing machine or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine and other terminal side devices, and the wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glasses, smart jewelry (smart bracelet, smart bracelet, smart ring, smart necklace, smart anklet, smart anklet, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a wireless access network device, a wireless access network device, or a core network device. Radio Access Network (RAN), radio access network function or radio access network unit. Access network equipment may include base stations, wireless local area network (WLAN) access points or WiFi nodes, etc. The base station may be called node B, evolved node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), home node B, home evolved node B, transmitting and receiving point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

Reconfigurable Intelligent Surface(s) (RIS) is an emerging artificial material device. RIS device units can dynamically/semi-statically adjust their own electromagnetic properties to affect the reflection/refraction behavior of electromagnetic waves incident to the RIS device units, causing the electromagnetic parameters (phase or amplitude or polarization direction) of the forwarded signal (reflected signal or transmitted/refracted signal) to change. RIS devices are composed of a large number of RIS device units. By controlling the electromagnetic characteristic state of each RIS device unit, the reflection/refraction behavior of each RIS device unit on the electromagnetic signal is superimposed on each other in space, realizing functions such as beam scanning/beamforming, etc.

The RIS device includes a control module and interacts with the base station through a wireless or wired interface. The RIS can receive control from the upstream base station (including the donor gNB or the parent node), that is, the base station can control the transmission parameters of the RIS, such as the receive/transmit beam between the RIS and the base station or between the RIS and the UE, to improve the working efficiency of the RIS.

As shown in Figure 2, the network structure includes three network nodes. The middle network node is a RIS device, which includes a terminal module (Mobile Termination, MT) and a RIS panel. The MT can establish a connection with the upstream base station (through a control link). The base station transmits control signaling to the RIS through the MT, which can control the sending/receiving related parameters of the link between the RIS device and the base station (such as the backhaul (Backhaul, BH) link) or the link between the RIS and the UE (such as the access (Access, AC) link).

NR Uu beam alignment:

Taking the beam training on the downlink beam base station/UE side, where the base station/UE can align autonomously as an example, beam alignment is roughly divided into two stages. The first stage is to initially train the initial transmission beam from the base station to the UE when the UE accesses the network. The second stage is to train the fine transmit and receive beam pairs from the base station to the UE after the UE establishes a connection. The beam training in the second stage is mainly completed through the measurement of the Channel State Information Reference Signal (CSI-RS) and the feedback of the Channel State Information (CSI).

For the first stage, the base station periodically sends synchronization signals/physical broadcast channel signal blocks (or synchronization signal blocks) (Synchronization Signal and PBCH block, SSB), and sends a group of SSBs in a beam scanning manner in each SSB transmission period. The UE measures the reference signal carried by the SSB and reports the SSB index with higher received energy so that the base station can determine its transmission beam. The UE reports the SSB index according to the rules specified in the protocol. Each SSB corresponds to a group of physical random access channel (Physical Random Access Channel, PRACH) resources. The UE sends the preamble of initial access on the corresponding PRACH resources, which represents the UE reporting the corresponding SSB index. For the second stage, The Rel-15NR Uu CSI acquisition process is shown in Figure 3. The base station configures the CSI reporting related parameters and triggers the CSI reporting (the "trigger" is only for semi-persistent or periodic CSI reporting). The UE measures and reports the CSI according to the base station configuration information, and the base station adjusts the transmission parameters such as the uplink and downlink beams according to the results on the UE. Among them, each CSI reporting configuration indicates the type of CSI reporting (CSI quantity), including CSI reference signal resource index (CSI-RS Resource Index, CRI), SSB index and other parameters indicating the beam, and also includes other parameter types Precoding matrix index (Precoding matrix index, PMI), rank index (rank index, RI), channel quality index (CQI), layer 1 reference signal received power (Layer 1reference signal received power, L1-RSRP), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR), etc.

In addition, for beam training on the base station/UE side, the base station/UE can autonomously select the training beam.

In the related art, in the scenario where information is forwarded between the base station and the terminal through a relay device such as RIS, the RIS device can be used to enhance the terminal signal. For example: in low-rate services, the terminal can communicate directly with the base station, and in high-rate services, the terminal can enhance the signal quality and provide communication rate with the assistance of the RIS device. Therefore, before scheduling the RIS device to serve the terminal, the network must train the receiving/forwarding beam of the RIS device to ensure the channel quality of the cascade channel of the base station-RIS-terminal. However, since the RIS device does not have baseband signal processing capabilities and can only forward analog beams, the beam training method in the related art is not applicable to scenarios where RIS devices exist.

In an embodiment of the present application, a beam training method is defined in a scenario where a RIS device exists, so that a relay device (i.e., the first device in the embodiment of the present application) can participate in beam training between a network side device, a relay device, and a terminal based on target parameters. Through the beam training process, at least one of the outgoing beam, the outgoing angle, the incoming beam, and the incoming angle of the relay device can be determined.

It should be noted that the outgoing beam in the embodiment of the present application is equivalent to the transmitting beam, the transmitting angle, and the outgoing angle; the incident beam in the embodiment of the present application is equivalent to the receiving beam, the receiving angle, and the incident angle.

It should be noted that the training beam in the embodiment of the present application can also be referred to as "managing or scanning or traversing the beam". The process of training the beam can be switching the beam or beam-related parameters to determine the final beam.

In the following, in combination with the accompanying drawings, the transmission method, parameter determination method, transmission device, parameter determination device and communication equipment provided in the embodiments of the present application are described in detail through some embodiments and their application scenarios.

Please refer to FIG. 4 , an embodiment of the present application provides a transmission method, the execution subject of which is a first device. As shown in FIG. 4 , the transmission method executed by the first device may include the following steps:

Step 401: A first device receives a first signal based on a target parameter, and/or sends a first signal based on a target parameter, wherein the target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device.

In one embodiment, the first device may be a relay device capable of receiving and forwarding signals, such as a RIS device, a network controlled repeater (NCR), etc. In the embodiment of the present application, the relay device is a RIS device as an example for illustration. Optionally, the RIS device may include an active RIS device, a passive RIS device, and a RIS device, hybrid RIS device. The device may include active RIS units and/or passive RIS units, which are not specifically limited here. If it is an active RIS device, the RIS device includes active units; if it is a passive RIS device, the RIS device includes passive units; if it is a hybrid RIS device, the RIS device includes active units and passive units.

In one implementation, the first device is connected to an upstream node second device (such as a network side device such as a base station), and the first device is connected to a downstream node third device (such as a terminal). The beam training process may be to adjust the transmission parameters (such as beam, receiving angle, transmitting angle, incident angle, exit angle, etc.) of at least one of the second device, the first device, and the third device, and the third device may receive and/or measure the first signal sent by the second device and forwarded by the first device to obtain a measurement result, and at least one of the second device, the first device, and the third device may determine a beam that can meet the communication quality requirements based on the measurement result.

It is worth noting that the overall process of training the beam can be that the second device sends a group of first signals, the first device receives and forwards the group of first signals, the third device receives and/or measures the group of first signals sent by the second device and forwarded by the first device, and obtains the measurement results. Then, the second device, the first device, the third device, or even at least one of the core network devices can obtain the measurement results and determine the beam of at least one of the second device, the first device, and the third device based on this.

The first device sends the first signal based on the target parameter, which may be that the first device reflects or refracts the incident first signal based on the target parameter.

Step 402: The first device sends and/or receives data information based on first information, wherein the first information is determined from the target parameter based on a measurement result of the first signal.

In one embodiment, the first information may include an outgoing beam or an outgoing angle, and an incident beam or an incident angle determined through beam training. In this case, the first device sends and/or receives data information based on the first information. The first device may send data information based on the determined outgoing beam or outgoing angle, and/or receive data information based on the determined incident beam or incident angle.

In one embodiment, the above beam training may also be training a beam in a downlink (DL). For example, a first device receives a first signal from a second device based on a target parameter, and the first device refracts or reflects the first signal based on the target parameter to send a first signal to a third device to train at least one of the following beams:

A DL transmission beam or transmission angle of the second device, for example, beam 1 as shown in FIG. 5 ;

A DL incident beam or incident angle of the first device, for example, beam 2 as shown in FIG5 ;

A DL outgoing beam or outgoing angle of the first device, for example, beam 3 as shown in FIG5 ;

The DL receiving beam or transmitting angle of the third device, for example, beam 4 as shown in FIG. 5 .

In one implementation, the above-mentioned beam training may also be training a beam in UL, for example: the first device receives a first signal from a third device based on a target parameter, and refracts or reflects the first signal based on the target parameter to send a first signal to the second device, so as to train at least one of the following beams:

a UL receive beam of a second device;

a UL receive beam of the first device;

A UL transmit beam of the first device;

UL transmit beam of the third device.

In one embodiment, the beam in uplink (UL) and the beam in DL may be trained separately.

In another embodiment, the beams in UL or DL can be trained, and for beams that have not been trained, they can be determined based on the reciprocity of UL and DL. For example: based on the reciprocity of UL and DL, the incident angle or incident beam of the first device determined in DL is the exit angle or exit beam of the first device in UL; the exit angle or exit beam of the first device determined in DL is the incident angle or incident beam of the first device in UL; the transmission angle or transmission beam of the second device determined in DL is the receiving angle or receiving beam of the second device in UL; the receiving angle or receiving beam of the third device determined in DL is the transmitting angle or transmitting beam of the third device in UL.

In the embodiments of the present application, beam training in DL is taken as an example for illustration, which does not constitute a specific limitation herein, and for beam training in UL, reference may be made to the description of beam training in DL.

As an optional implementation manner, the target parameter includes: at least one of an incident angle, an incident beam, an exit angle, an exit beam, and control information of the first device.

For example, the target parameter includes at least one of the following: a reference signal identifier (ID), a beam ID, and a resource ID).

Among them, each incident beam or receiving beam can correspond to an incident angle or receiving angle, and each outgoing beam or transmitting beam can correspond to an outgoing angle or transmitting angle. That is to say, the incident/receiving beam in the embodiment of the present application can be replaced by the incident/receiving angle, and the outgoing/transmitting beam can be replaced by the outgoing/transmitting angle.

In one implementation, the first device may be a RIS device, and the control information of the first device may be at least one of the state control information, phase matrix, and codebook of the RIS unit array. The phase matrix may be a predefined/preconfigured/configured parameter, indexed by index. For example, it may be an index jointly encoded by the incident angle and the exit angle, there are k1 incident angles, k2 incident angles, and the index size may be k1*k2 index values. It is understandable that the RIS device may generate the state control information/codebook of the corresponding RIS unit array through the incident angle and the exit angle. For example, assuming that the horizontal incident angle is α, the horizontal exit angle is β, the RIS unit array is a rectangular array of M*N, and the interval between adjacent RIS units is λ/2. Assuming that the RIS unit at the lower left corner of the RIS unit array is numbered (0,0) and used as a reference point for generating the codebook, the phase difference of the forwarding signal of the RIS unit numbered (i,j) relative to the forwarding signal of the RIS unit numbered (0,0) is iπ(sinα-sinβ). The state of the RIS unit (i, j) is adjusted according to the above phase difference, so that the forwarding signal phases of the RIS unit (i, j) and the RIS unit (0, 0) are positively superimposed, thereby obtaining the expected codebook.

Optionally, the number of target parameters may be K, where K satisfies at least one of the following:

K is a value that is predefined, preconfigured, configured, or indicated by the network side;

K is a value greater than or equal to 1;

In the case of training the third parameter and/or the fourth parameter, K is equal to 1, the fourth parameter is a parameter of the third device receiving the first signal, and the third device is a receiving end of the first signal sent by the first device, that is, the target parameter of the first device remains unchanged;

In the case of training the first parameter and/or the second parameter, K is greater than or equal to 1;

When training the target parameters, K is greater than or equal to 1.

The target parameter includes a first parameter and a second parameter, and the first parameter is a parameter for the first device to receive the first signal, and the second parameter is a parameter for the first device to send the first signal.

For example, the first parameter includes: an incident angle, an incident beam, and at least one of the control information of the first device; the second parameter includes: an exit angle, an exit beam, and at least one of the control information of the first device.

In this embodiment, during the process of training the beam of the second device or the third device, the beam of the first device remains unchanged, that is, the target parameters remain unchanged. During the process of training the beam of the first device, the beam of the first device changes, for example: the first device transmits a first signal with at least two target parameters in a beam scanning or polling manner.

In one embodiment, the first device receives a first signal based on a target parameter, and/or sends a first signal based on a target parameter. The first device may transmit (i.e., receive and reflect/refract) the first signal with different target parameters, wherein the transmission performance of the first signal may be different under different target parameters. In this way, the first information is determined from the target parameters based on a measurement result of the first signal, for example: the target parameter used when the transmission performance of the first signal is optimal is selected as the first information, or the target parameter when the transmission performance of the first signal meets the communication quality requirements is selected as the first information.

In one embodiment, the first device receives a first signal based on a target parameter, and the first device receives information with a target parameter that is predefined, preconfigured, configured, or indicated by a network side device, for example: receiving control information transmitted through a control link, or, in the process of training a beam of a second device or a third device, the first device receives a first signal with a target parameter that is predefined, preconfigured, configured, or indicated by a network side device.

In one embodiment, the first device sends a first signal based on a target parameter, which may be that the first device sends information with a target parameter that is predefined, preconfigured, configured, or indicated by a network side device, for example: sending control information transmitted via a control link to the second device, or, in the process of training a beam of the second device or a third device, the first device receives and forwards the first signal with a target parameter that is predefined, preconfigured, configured, or indicated by a network side device.

As an optional implementation manner, the parameter value of the target parameter satisfies at least one of the following:

Predefined parameter values;

Preconfigured parameter values;

Configuration parameter values;

Parameter value indicated by the network side;

The parameter value indicated by the identifier, for example: the correspondence between the index/identifier and the parameter value is pre-stored, then when a certain identifier is indicated, the parameter value of the target parameter can be determined to be the parameter value corresponding to the identifier;

The first device determines a parameter value.

In one implementation, when the first device determines the parameter value of the target parameter, the first device may send the parameter value of the target parameter to at least one of the second device and the third device, for example, the first device sends the parameter value of the target parameter to the second device and the third device to assist the third device in measuring the measurement result of the first signal and assist the second device and/or the third device in determining the first information. The first device may report the target parameter by sending the parameter number of the target parameter or the control information number.

In one implementation, the first device may select one or more parameters from network-side indicated or predefined parameters as target parameters.

As an optional implementation manner, the measurement result includes at least one of the following:

Channel state information reference signal resource identifier (CSI-RS resource index, CRI);

Synchronous signal block resource identifier (SSB resource index, SSBRI);

Layer 1 reference signal received power (L1-RSRP);

L1-RSRP difference; the RSRP difference may be the difference between the RSRP of the measured signal and the strongest RSRP or the weakest RSRP or the preset RSRP;

Linear average of multiple ports;

Layer 1 signal to interference plus noise ratio (L1-SINR);

Reference signal resource number;

The parameter number or control information number corresponding to the target parameter of the first device.

In one implementation, when the measurement result includes L1-RSRP, the L1-RSRP may be the L1-RSRP of the strongest beam, or the difference from the L1-RSRP of the strongest beam, or if there are multiple ports, the linear average of the L1-RSRPs of multiple ports. Reporting the L1-RSRP difference may reduce reporting overhead.

In an optional implementation, the first parameter and the second parameter are jointly trained, that is, the incident beam and the outgoing beam of the second device can be jointly trained.

Optionally, the transmit beam of the second device and the receive beam of the third device may be trained independently.

For example: As shown in Figure 6, the beam is trained in three steps;

Step 61, independently training the beam of the base station;

Step 62: jointly train the incoming beam and outgoing beam of the relay device;

Step 63: Independently train the beam of the terminal.

In one implementation, when performing gNB TX beam training, target parameters of RIS (e.g., incident angle/exit angle/phase matrix) are predefined, and then the gNB TX beam is determined based on the measurement results reported by the UE;

In one implementation, when performing gNB TX beam training, the gNB sends a reference signal with multiple different beams; at this time, the RIS uses an autonomously determined RIS target parameter (K=1) to forward the reference signal; the UE receives the reference signal with a fixed beam, and determines the gNB TX beam based on the measurement results reported by the UE.

In one implementation, when performing UE beam training, the gNB sends a reference signal with the same beam; at this time, the RIS uses an autonomously determined RIS target parameter (K=1) to forward the reference signal; the UE receives the reference signal with multiple different beams, and determines the UE RX beam based on the measurement results reported by the UE.

In one implementation, when performing target parameter training for RIS, the gNB sends a reference signal with the same beam; at this time, the RIS forwards the reference signal using multiple RIS target parameters (K>1) determined autonomously; the UE receives the reference signal with a fixed beam, and determines the first information (for example: RIS TX beam and/or RIS RX beam) based on the measurement results reported by the UE.

It should be noted that, in implementation, the beams of the base station and/or the terminal may be determined in other ways, for example: The station independently determines its transmission beam, which is not specifically limited here.

In an optional embodiment, the first parameter, the second parameter and the third parameter are jointly trained, that is, the incident beam and the outgoing beam of the second device, and the transmitting beam of the second device can be jointly trained, the third parameter is the parameter of the second device sending the first signal, and the second device is the sending end of the first signal received by the first device.

Optionally, the receive beam of the third device may be trained independently.

For example: As shown in Figure 5, the beam is trained in two steps;

Step 51: jointly train the beam of the base station, and the incoming beam and outgoing beam of the relay device;

Step 52: independently train the beam of the terminal.

As an optional implementation manner, the transmission method further includes:

The first device receives first indication information, where the first indication information is used to indicate a target parameter of a first signal transmitted by the first device.

The first device may receive first indication information from the second device. For example, the second device sends first indication information to the first device and sends second indication information to the third device, so that the first device and the third device transmit the first signal according to the indication of the second device.

The first indication information may be carried in at least one of the following signalings:

F1 application protocol (F1-AP) signaling, radio resource control (Radio Resource Control, RRC) signaling, media access control layer control element (Medium Access Control Control Element, MAC CE), downlink control information (Downlink Control Information, DCI) signaling, backhaul access protocol packet data unit (Backhaul Access Protocol Packet Data Unit, BAP PDU).

Optionally, the first indication information is used to configure or indicate at least one of the following:

The repetition state of the first signal is on, or the repetition state of the first signal is off, for example: the repetition state of the first signal sent by the second device is configured to be on or off;

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated, and the second device is a transmitter of the first signal received by the first device;

The receiving beam of the third device is repeated or not repeated, and the third device is a receiving end of the first signal sent by the first device;

The transmission and/or reception beams of the first device are repeated or non-repeated;

The first device receives a set of beams of a first signal.

In one implementation, the first indication information is used to configure or indicate whether the second device's transmit beam is repeated or not and whether the third device's receive beam is repeated or not. For example, taking the following beam training as an example, the first indication information includes 2 bits, of which 1 bit is used to indicate whether the base station's transmit beam is repeated (repetition on/off for gNB), and the other 1 bit is used to indicate whether the terminal's receive beam is repeated (repetition on/off for UE), wherein the non-repeated end performs beam training. Specifically: If one side of the base station or the terminal performs beam training (repetition off), then The other side and the relay device (repetition on) do not perform beam training; if both the base station and the terminal do not perform beam training (repetition on), the relay device performs beam training (repetition off).

In one implementation, the first device receives a first signal based on a target parameter, including:

The first device receives a group of first signals based on a target parameter, where the group of first signals includes M first signals, where M is an integer greater than or equal to 1.

During the beam training process, the second device may send a group of first signals, and the group of first signals may include M first signals.

Optionally, the value of M may be predefined/preconfigured/configured; or, the maximum/minimum value of M may be predefined/preconfigured/configured.

Optionally, the size/position of the resources (time domain/frequency domain/spatial domain) of the M first signals are predefined/preconfigured/configured.

Optionally, the first signal is periodic, semi-static, or non-periodic.

Optionally, resource sizes of the M first signals are the same.

In one implementation, the group of first signals is a repeated signal, and the group of first signals being a repeated signal means that the second device uses the same beam to send a group of first signals. In this case, it can be used to train the beam of the first device and/or the third device, and the number of repetitions M of the first signal satisfies one of the following:

A value that is predefined, preconfigured, configured, or indicated by the network side;

For the beam training of the first device, that is, training the target parameters, the number of repetitions can be configured or indicated as M1, and the value of M1 is related to the parameter configuration of the first device. For example: M1 = X*Y, where X is the number of incident beams/received beams of the first device, and Y is the number of outgoing beams/transmitted beams of the first device.

For the beam training of the third device, the number of repetitions is configured or indicated to be M2, where M2=N, and the value of N is related to the parameter configuration of the third device. For example, N is the number of receiving beams of the third device.

In another implementation, the group of first signals may also be non-repetitive signals, and the group of first signals being non-repetitive signals means that the second device uses different beams to send the group of first signals. In this case, the non-repetitive signals are used for gNB TX beam training. The number of non-repetitive signals depends on (or is equal to) the number of gNB TX beams to be trained.

In another implementation manner, a group of first signals may also be a combination of a repetitive signal and a non-repetitive signal.

For example: there are multiple subsets in the group of signals, the signals in each subset are repeated signals, and the signals between different subsets are non-repeated signals; or,

There are multiple subsets in the group of signals, the signals in each subset are non-repetitive signals, and the signals between different subsets are repetitive signals. For example, signal #1 in subset #1 and signal #1 in subset #2 use the same beam.

In one embodiment, the number of gNB beam repetitions required for the beam training of the first device and the beam training of the third device may be different.

Scenario 1: When training the beam of the second device, the first signal is a non-repeating signal, and the beams of the first device and the third device may be fixed, that is, the transmit and/or receive beam of the first device and the receive beam of the third device Beam repetition, for example: the first device receives and forwards the first signal with a beam predefined, preconfigured, configured or indicated by the network side device, and the third device receives the first signal with a beam predefined, preconfigured, configured or indicated by the network side device.

For example, the second device may indicate to the first device and the third device that the first signal is a non-repeating signal, so that the first device and the third device select a fixed beam to transmit the first signal based on the indication.

Scenario 2: When training the beam of the first device, the first signal is a repeated signal, and the beams of the second device and the third device may be fixed.

For example, the second device may indicate to the first device and the third device that the first signal is a repeated signal, and the first signal is repeated for beam training of the first device. In this way, the first device transmits the first signal with at least two target parameters based on the indication, that is, the transmission and/or reception beam of the first device is not repeated, and the third device receives the first signal with a fixed beam based on the indication, that is, the reception beam of the third device is repeated.

Scenario three: when training the beam of the third device, the first signal is a repeated signal, and the beams of the second device and the first device may be fixed.

For example, the second device may indicate to the first device and the third device that the first signal is a repeated signal, and the first signal is repeated for beam training of the third device. In this way, the first device transmits the first signal with fixed target parameters based on the indication, that is, the transmission and/or reception beam of the first device is repeated, and the third device receives the first signal with at least two beams based on the indication, that is, the reception beam of the third device is not repeated.

Scenario 4: In the case of jointly training the beams of the second device and the first device, the first signal is a non-repeating signal, and the first device uses at least two beams to transmit the first signal, that is, the transmitting and/or receiving beams of the first device are non-repeating, and the receiving beam of the third device can be fixed, that is, the receiving beam of the third device is repeated.

For example, the second device may indicate to the first device and the third device that the first signal is a non-repeating signal, and the first signal is repeatedly used for beam training of the first device. In this way, the first device transmits the first signal with at least two target parameters based on the indication, that is, the transmission and/or reception beam of the first device is non-repeating, and the third device receives the first signal with a fixed beam based on the indication, that is, the transmission beam of the third device is repeated.

Optionally, the first indication information satisfies at least one of the following:

The repetition transmission status and training object of the first signal are jointly indicated, and the training object includes the target parameter or the fourth parameter, for example: using 2-bit joint indication, 2 bits have 4 code points, one code point indicates that the first signal is not repeated/repetition "off"; one code point indicates that the first signal is repeated/repetition'on' for the first device beam training; one code point indicates that the first signal is repeated/repetition'on' for the third device beam training.

The repetition transmission status and training object of the first signal are independently indicated, for example: 1 bit is used to indicate that repetition is ‘on’ or ‘off’; another 1 bit is used to indicate that it is used for beam training of the first device, or for beam training of the third device.

The receiving and/or transmitting beam of the first device and/or the receiving beam of the third device may be indicated by the second device.

For example, the second device sends a first instruction message to the first device, instructing the first device to use a fixed target parameter to transmit The first device may transmit (i.e., receive and forward) a group of first signals, or forward a group of first signals in a polling manner using multiple target parameters. Alternatively, the first device may be instructed to use a target parameter number when forwarding a first signal, that is, to indirectly instruct the first device to forward the first signal using a fixed or polled target parameter.

As another example: the second device sends a second indication message to the third device, instructing the third device to use a fixed beam to receive the group of first signals (wherein the receiving beam directions of a group of first signals are different), or to use beam scanning to receive the group of first signals (i.e., indicating that the receiving beam directions of a group of signals are the same).

In this way, the first device and the third device can perform beam training according to the instruction of the second device.

In one embodiment, the first device receiving the first signal based on the target parameter, and/or sending the first signal based on the target parameter includes:

When a first preset condition is met, the first device receives and/or sends a first signal with at least two target parameters.

The first preset condition includes at least one of the following:

The repetitive transmission state of the first signal is off;

The first signal is repeatedly used for training the target parameter;

The repetitive transmission state of the first signal is on, and the first signal is repeatedly used for training the target parameter;

The first device is configured or instructed to perform beam training or transmit the first signal using at least two target parameters;

The transmission beam of the second device is repeated, and the second device is a transmitter of the first signal received by the first device;

The transmission and/or reception beams of the first device are non-repetitive;

The receiving beam of the third device is repeated, and the third device is a receiving end of the first signal sent by the first device.

Among them, satisfying the above-mentioned first preset condition can represent training the beam of the first device, or jointly training the beams of the second device and the first device. At this time, the third device can receive a group of first signals with a fixed beam, or the third device assumes that the downlink spatial transmission filter is the same.

When the second preset condition is met, the first device receives and/or sends the first signal with preset parameters, or the first device assumes that the downlink spatial domain transmission filters are the same.

Optionally, the second preset condition includes at least one of the following:

The repeated transmission state of the first signal is on;

The first signal is repeatedly used for training a fourth parameter;

The third device is configured or instructed to perform beam training and/or receive a set of first signals using at least two fourth parameters;

The transmit beam of the second device is repeated;

repetition of transmit and/or receive beams of the first device;

The receiving beam of the third device is non-repetitive.

Among them, satisfying the above-mentioned second preset condition may indicate that the beam of the third device is trained. At this time, the third device may receive information with N beams, and N may be the number of beams that the third device needs to train.

As an optional implementation manner, before the first device receives the first signal based on the target parameter and/or sends the first signal based on the target parameter, the method further includes at least one of the following:

The first device sends first capability information, where the first capability information includes at least part of the target parameters;

The first device receives fourth information, where the fourth information is used to configure or indicate at least part of the parameters of the target parameters.

In one implementation, the first capability information may be carried in at least one of the following: operation administration and maintenance (OAM) signaling, RRC signaling, MAC CE, uplink control information (UCI), physical uplink control channel (PUCCH), and physical uplink shared channel (PUSCH).

In this embodiment, the second device and the first device can negotiate target parameters. For example, the first device sends the transmission parameters supported by the first device to the second device through the first capability information, the second device selects the target parameters from the transmission parameters supported by the first device as needed, and sends the selected target parameters to the first device through the fourth information; or, the second device sends candidate transmission parameters to the first device through the fourth information, the first device selects part or all of them as target parameters. In addition, the first device can also send the selected target parameters to the second device.

Please refer to FIG7 , a transmission method provided in an embodiment of the present application, wherein the execution subject is a third device, and the third device may be a downstream node of the first device, for example, a terminal. The embodiment of the present application is similar to the method embodiment shown in FIG4 , and the differences include: the execution subject of the method embodiment shown in FIG7 is the third device, and the execution subject of the method embodiment shown in FIG4 is the first device. For the explanation of the embodiment of the present application, reference may be made to the explanation in the method embodiment shown in FIG4 , and no further description is given here.

As shown in FIG. 7 , the transmission method performed by the third device may include the following steps:

Step 701: A third device receives a first signal and obtains a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device.

Step 702: The third device sends the measurement result.

In one embodiment, the third device can send the measurement result to at least one of the second device and the first device, so that at least one of the second device and the first device can determine the first information from the target parameter based on the measurement result, that is, select the receiving beam and the transmitting beam of the first device.

In one implementation, the third device receives the first signal, including at least one of the following:

The third device receives the first signal based on the second target parameter;

The third device receives data information based on second information, where the second information is determined from the second target parameter based on the measurement result;

The third device receives the first signal with a predefined, preconfigured or configured receive beam.

In which, when the third device receives the first signal based on the second target parameter, the second device can repeatedly send the first signal, and the first device can transmit the first signal with a predefined, preconfigured or configured beam to train the beam of the third device.

In the case where the third device receives the first signal with a predefined, preconfigured or configured receiving beam, the receiving beam of the third device may be an omnidirectional beam, or the third device determines a receiving beam of the first signal based on implementation, the second device may send a non-repeating first signal, and/or the first device may transmit the first signal with different beams to train the beams of the second device and/or the first device.

Optionally, the second target parameter includes: a receiving angle, a receiving beam, and at least one of control information of the third device.

The control information of the third device may be a phase matrix, a codebook, etc.

Optionally, the second target parameter includes:

A fourth parameter, where the fourth parameter is a parameter for the third device to receive the first signal.

Optionally, the third device receives the first signal based on the second target parameter, including at least one of the following:

The third device receives the first information with a fourth parameter that is predefined, preconfigured, configured, or indicated by the network side;

The third device receives the first signal with N fourth parameters.

In one implementation, the third device may receive the first signal with N fourth parameters in a polling or beam scanning manner to train the beam of the third device.

Channel state information reference signal resource identifier CRI;

Synchronization signal block resource identifier SSBRI;

Layer 1 reference signal received power L1-RSRP;

L1-RSRP difference;

Linear average of multiple ports;

Layer 1 signal to interference plus noise ratio L1-SINR;

Reference signal resource number;

In one embodiment, the number of the measurement results is L, where L is an integer greater than or equal to 1;

The value of L is predefined, preconfigured, configured, indicated by the network side or determined by the third device.

In one implementation, the maximum value of L is predefined, preconfigured, configured, or indicated by the network side.

In one implementation, the first device may not report the measurement result, or the reported measurement result may be "none", in which case it may indicate that the first device has not received the first signal.

As an optional implementation manner, the third device sending the measurement result includes:

The third device sends the measurement result on preconfigured or configured resources (such as time domain resources and/or frequency domain resources and/or a beam indicated by a beam index).

As an optional implementation manner, the transmission method further includes:

The third device receives second indication information, where the second indication information is used to indicate or configure the third device to receive a second target parameter of the first signal.

Optionally, the second indication information is used to configure or indicate at least one of the following:

The repeated transmission state of the first signal is on, or the repeated transmission state of the first signal is off;

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The third device receives a set of beams of the first signal.

In one implementation, the second indication information may be the same indication information as the first indication information in the method embodiment shown in FIG. 4 , for example: the second device sends the same DCI to the first device and the third device, and the indication information carried in the DCI is the first indication information and the second indication information.

For example, the second indication information is used to configure or indicate at least one of the following:

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The transmit and/or receive beams of the first device may be repeated or non-repeated.

In one implementation, the second indication information may be different from the first indication information in the method embodiment shown in FIG. 4 , for example: the second device sends a DCI to the first device, the DCI carries the first indication information, and the second device sends another DCI to the third device, the DCI carries the second indication information.

For example: the second device sends a first indication message to the first device, instructing the first device to forward a group of first signals using fixed target parameters, or to forward the group of first signals in a polling manner using multiple target parameters. Alternatively, the first indication message may indicate the target parameter number when the first device forwards a certain first signal, that is, indirectly instructing the first device to forward the first signal using a fixed or polled target parameter. In addition, the second device sends a second indication message to the third device, instructing the third device to receive the group of first signals using a fixed beam, or to receive the group of first signals using a beam scanning method.

In this way, the third device may transmit the first signal and/or the measurement result based on the instruction of the second device.

In an optional implementation manner, the third device obtains a measurement result of the first signal, including:

When the first preset condition is met, the third device receives the first signal with preset parameters, or the third device assumes that the downlink spatial domain transmission filters are the same.

Optionally, the first preset condition includes at least one of the following:

The repetitive transmission state of the first signal is off;

The first signal is repeatedly used for training the first parameter and/or the second parameter;

The repetitive transmission state of the first signal is on, and the first signal is repeatedly used for training the first parameter and/or the second parameter;

The transmit beam of the second device is repeated;

The transmission and/or reception beams of the first device are non-repetitive;

The receiving beam of the third device is repeated, and the third device is a receiving end of the first signal sent by the first device;

At this time, the beam of the first device is trained, or the beams of the second device and the first device are jointly trained.

When a second preset condition is met, the third device receives the first signal with at least two parameters.

Optionally, the second preset condition includes at least one of the following:

The repeated transmission state of the first signal is on;

The first signal is repeatedly used for training a fourth parameter;

The third device is configured or instructed to perform beam training or receive a group of first signals in a beam scanning manner;

The transmit beam of the second device is repeated;

repetition of transmit and/or receive beams of the first device;

The receive beam of the third device does not repeat.

At this time, the beam of the third device is trained.

In an optional implementation manner, the third device sending the measurement result includes:

When the second indication information satisfies the first condition, the third device sends the measurement result of the first signal using a first configuration parameter, where the first configuration parameter is a parameter for training and reporting the fourth parameter.

Optionally, the first condition includes at least one of the following:

The second indication information configures or indicates that the repeated transmission state of the first signal is turned on;

The second indication information configures or indicates that the repeated transmission state of the first signal is turned on, and the first signal is used for training the fourth parameter.

In another optional implementation, when the second indication information satisfies a second condition, the third device sends the measurement result of the first signal with a second configuration parameter, where the second configuration parameter is a parameter for training and reporting the target parameter.

Optionally, the second condition includes at least one of the following:

The second indication information configures or indicates that the repetitive transmission state of the first signal is off, and the first signal is used for target parameter training;

The second indication information configures or indicates that the repeated transmission state of the first signal is turned on, and the first signal is used for training the target parameter.

The measurement results included in the first configuration parameter and the second configuration parameter may be the same or different, and the reporting numbers L of the measurement results in the first configuration parameter and the second configuration parameter may be the same or different.

As an optional implementation manner, the transmission method further includes:

The third device determines first identification information of a target parameter (such as a parameter number/control information number of the target parameter of the first device) or second identification information of a reference signal resource corresponding to the target parameter, wherein the target parameter is used for transmission of the first signal by the first device;

The third device sends the first identification information or the second identification information.

Under this embodiment, the third device can obtain the resource number of the received first signal, or determine the target parameter of the first device transmitting the first signal, and send an identifier of the resource number or the target parameter, so that the second device or the first device can determine which first signal the measurement result is obtained, and select a beam accordingly.

As an optional implementation manner, the transmission method further includes at least one of the following:

The third device sends second capability information, where the second capability information includes at least part of a second target parameter, where the second target parameter is a parameter for the third device to receive the first signal;

The first device receives fifth information, where the fifth information is used to configure or indicate at least part of parameters of the second target parameter.

In this implementation mode, the third device may send the second capability information to the second device, and/or the third device may receive the fifth information from the second device, so as to achieve negotiation of the second target parameter with the second device. The specific process and principle thereof may refer to the relevant description of the first device sending the first capability information and/or receiving the fourth information in the method embodiment shown in FIG4 , and will not be repeated here.

The embodiment of the present application cooperates with the method embodiment shown in Figure 4 to implement beam training between the second device, the first device and the third device by adjusting the transmission parameters of the first device.

Please refer to Figure 8. An embodiment of the present application provides a parameter determination method, whose execution subject is the second device. The embodiment of the present application is similar to the method embodiment shown in Figure 4. The difference is that the execution subject of the method embodiment shown in Figure 8 is the second device, and the execution subject of the method embodiment shown in Figure 4 is the first device. For the explanation of the embodiment of the present application, please refer to the explanation in the method embodiment shown in Figure 4, and no further details will be given here.

As shown in FIG8 , the parameter determination method performed by the second device may include the following steps:

Step 801: The second device sends a first signal.

Step 802: The second device receives a measurement result, where the measurement result is a measurement result obtained by receiving and/or measuring the first signal forwarded by the first device.

Step 803: The second device determines first information from the target parameter based on the measurement result, wherein the The target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device.

Optionally, the target parameter includes at least one of an incident angle, an incident beam, an exit angle, an exit beam, and control information of the first device.

Optionally, the target parameter includes at least one of the following:

A first parameter, where the first parameter is a parameter for the first device to receive a first signal;

A second parameter, where the second parameter is a parameter of the first signal sent by the first device.

Optionally, the second device sending a first signal includes:

The second device sends a first signal based on a third target parameter;

The second device sends data information based on third information, wherein the third information is determined from the third target parameter based on the measurement result;

The second device transmits a first signal based on a predefined, preconfigured or configured transmit beam.

In one implementation, the second device may send the first signal with a predefined, preconfigured or configured transmission beam, that is, send a repeated first signal. At this time, the beam of the first device or the third device may be trained.

In one implementation, the second device may send the first signal with a different beam, that is, send a non-repeating first signal. In this case, the beam of the second device may be trained, or the beams of the second device and the first device may be jointly trained.

When training the beam of the second device, the second device can select a beam for sending data information from the trained beams based on the measurement results of the first signal by the third device, for example: selecting a transmitting beam that meets the communication quality requirements, or selecting a transmitting beam with the best communication quality.

Optionally, the third target parameter includes: at least one of a transmission angle, a transmission beam, and control information of the second device.

The control information of the second device may be a phase matrix, a codebook, etc. of the second device.

Optionally, the third target parameter includes:

A third parameter, where the third parameter is a parameter for the second device to send the first signal.

The number of the third parameters may be equal to 1, ie, the second device sends the first signal based on a fixed transmission beam; or, the number of the third parameters may be greater than 1, ie, the second device sends the first signal based on different transmission beams.

Optionally, the first parameter is jointly trained with the second parameter;

or,

The first parameter, the second parameter and the third parameter are trained jointly.

Optionally, the parameter determination method further includes:

The second device sends first indication information to the first device, where the first indication information is used to indicate a target parameter for the first device to transmit a first signal;

and / or,

The second device sends second indication information to the third device, where the second indication information is used to instruct the third device to receive a second target parameter of the first signal.

Optionally, the first indication information and/or the second indication information is used to configure or indicate at least one of the following:

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The first device receives a set of beams of a first signal;

The third device receives a set of beams of the first signal.

Optionally, the second target parameter includes N fourth parameters, and the method further includes:

The second device determines a fourth parameter from the N fourth parameters according to the measurement result;

The second device sends indication information of the fourth parameter to the third device.

This implementation manner is to train the beam of the third device. The second device selects a beam according to the training result and notifies the third device that the beam can be used to transmit data information.

Optionally, the parameter determination method further includes at least one of the following:

The second device receives first capability information from the first device, where the first capability information includes at least part of the target parameters;

The second device sends fourth information to the first device, where the fourth information is used to configure or indicate at least part of the parameters of the target parameter;

The second device receives second capability information from the third device, where the second capability information includes at least part of a second target parameter, where the second target parameter is a parameter for the third device to receive the first signal;

The second device sends fifth information to the third device, where the fifth information is used to configure or indicate at least part of parameters of the second target parameter.

The second device determines, according to a determined third parameter, a receiving parameter of the second device in an uplink transmission scenario;

The second device determines, according to a determined target parameter, a receiving and/or sending parameter of the first device in an uplink transmission scenario;

The second device determines a sending parameter of the third device in an uplink transmission scenario according to a determined fourth parameter.

It should be noted that, in implementation, the receiving parameters of the second device in the uplink transmission scenario can be determined by the second device; the receiving and/or sending parameters of the first device in the uplink transmission scenario can be determined by the first device; and the sending parameters of the third device in the uplink transmission scenario can be determined by the third device.

For example, when the second device determines the reception and/or transmission parameters of the first device in the downlink transmission scenario based on the measurement result of the first signal, the reception and/or transmission parameters in the downlink transmission scenario can be indicated to the first device. The first device can determine the reception and/or transmission parameters of the first device in the uplink scenario based on the reciprocity of the uplink beam and the downlink beam and the reception and/or transmission parameters in the downlink transmission scenario.

For example, during UL transmission, the gNB's receive beam is the same as the gNB's transmit beam during DL transmission.

During UL transmission, the receive beam of the RIS is the same as the transmit beam of the RIS during DL transmission;

During UL transmission, the transmit beam of the RIS is the same as the receive beam of the RIS during DL transmission;

During UL transmission, the UE's transmit beam is the same as the RIS's transmit beam during DL transmission.

The embodiment of the present application cooperates with the method embodiment shown in FIG. 4 and/or FIG. 7 to implement beam training of a relay device.

In order to facilitate the description of the transmission method and parameter determination method provided in the embodiments of the present application, the transmission method and parameter determination method provided in the embodiments of the present application are described by taking the following embodiments as examples:

Embodiment 1

As shown in FIG5 , assuming that the second device is a gNB, the first device is a RIS, and the third device is a UE, and the transmit beam of the gNB, the receive beam and the transmit beam of the RIS are jointly trained, and the receive beam of the UE is independently trained, the training process may include the following processes:

Step 51: gNB and RIS perform beam training; gNB sends a first signal, gNB and RIS poll for transmission data with the following configuration, UE receives reference signals with a fixed beam, and determines the transmit beam of gNB and the transmit beam and receive beam configuration of RIS based on the UE measurement report result.

The number of beams sent by the gNB is M=M1*K, where M1 is the number of non-repeated beams of the gNB, K is the number of metrics of RIS, and one metric includes one input beam and one output beam.

For example, the beam and RIS metric of the first signal sent by the gNB are shown in Table 1:

Table 1

Step 52: The gNB sends a first signal using the transmit beam obtained through training, and the RIS uses the transmit beam obtained through training and the receiver. The receiving beam receives and forwards the first signal, and the UE receives/measures the first signal with N beams, and determines the receiving beam of the UE according to the UE measurement reporting result.

Embodiment 2

As shown in FIG6 , assuming that the second device is a gNB, the first device is a RIS, and the third device is a UE, and the receiving beam and the transmitting beam of the RIS are jointly trained, and the transmitting beam of the gNB and the receiving beam of the UE are independently trained, the training process may include the following processes:

Step 61: gNB TX beam training, gNB sends reference signals with multiple different beams; at this time, RIS uses an independently determined RIS target parameter (K=1) to forward the reference signal; UE receives the reference signal with a fixed beam, and determines the gNB TX beam based on the UE measurement report results.

Step 62: When performing RIS beam training, the gNB sends the reference signal with the same beam; at this time, the RIS uses the target parameters of multiple RISs determined autonomously (K>1) to forward the reference signal; the UE receives the reference signal with a fixed beam, and determines the beam of the RIS (incident beam and outgoing beam) according to the UE measurement report result.

Step 63: When performing UE beam training, the gNB sends the reference signal with the same beam; at this time, the RIS uses an independently determined RIS target parameter (K=1) to forward the reference signal; the UE receives the reference signal with multiple different beams, and determines the UE RX beam based on the UE measurement report results.

The transmission method provided in the embodiment of the present application can be executed by a transmission device. In the embodiment of the present application, the transmission device provided in the embodiment of the present application is described by taking the transmission method executed by the transmission device as an example.

Please refer to FIG. 9 . A transmission device provided in an embodiment of the present application may be a device in a first device. As shown in FIG. 9 , the transmission device 900 may include the following modules:

A first transmission module 901 is configured to receive a first signal based on a target parameter, and/or send a first signal based on a target parameter; wherein the target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device;

The second transmission module 902 is configured to send and/or receive data information based on first information, wherein the first information is determined from the target parameter based on a measurement result of the first signal.

Optionally, the target parameter includes at least one of the following:

Optionally, the first parameter and the second parameter are jointly trained;

or,

The first parameter, the second parameter and the third parameter are jointly trained, the third parameter is a parameter of a first signal sent by a second device, and the second device is a sending end of the first signal received by the first device.

Optionally, the parameter value of the target parameter satisfies at least one of the following:

Predefined parameter values;

Preconfigured parameter values;

Configuration parameter values;

Parameter value indicated by the network side;

The parameter value indicated by the identifier;

The first device determines a parameter value.

Optionally, the number of target parameters is K, and K satisfies at least one of the following:

K is a value greater than or equal to 1;

In the case of training the third parameter and/or the fourth parameter, K is equal to 1, the fourth parameter is a parameter for the third device to receive the first signal, and the third device is a receiving end of the first signal sent by the first device;

When training the target parameters, K is greater than or equal to 1.

Optionally, the measurement result includes at least one of the following:

Channel state information reference signal resource identifier CRI;

Synchronization signal block resource identifier SSBRI;

Layer 1 reference signal received power L1-RSRP;

L1-RSRP difference;

Linear average of multiple ports;

Layer 1 signal to interference plus noise ratio L1-SINR;

Reference signal resource number;

Optionally, the transmission device 900 further includes:

The second receiving module is used to receive first indication information, where the first indication information is used to indicate a target parameter for the first device to transmit a first signal.

Optionally, the first indication information is information carried by a first signaling, and the first signaling includes at least one of the following:

F1 application protocol F1-AP signaling, radio resource control RRC signaling, media access control layer control unit MAC CE signaling, downlink control information DCI signaling, bandwidth allocation protocol data unit BAP PDU.

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The first device receives a set of beams of a first signal.

The repetition transmission state of the first signal and the training object are jointly indicated, and the training object includes the target parameter or the fourth parameter;

The repetition transmission state and the training object of the first signal are independently indicated.

Optionally, the first transmission module 901 is specifically configured to:

When a first preset condition is met, receiving and/or sending a first signal with at least two target parameters;

When the second preset condition is met, the first signal is received and/or sent with preset parameters, or the first device assumes that the downlink spatial domain transmission filters are the same.

Optionally, the first preset condition includes at least one of the following:

The repetitive transmission state of the first signal is off;

The first signal is repeatedly used for training the target parameter;

The transmission and/or reception beams of the first device are non-repetitive;

and / or,

The second preset condition includes at least one of the following:

The repeated transmission state of the first signal is on;

The first signal is repeatedly used for training a fourth parameter;

The transmit beam of the second device is repeated;

repetition of transmit and/or receive beams of the first device;

The receiving beam of the third device is non-repetitive.

Optionally, the first transmission module 901 includes:

The first receiving unit is used to receive a group of first signals based on the target parameter, where the group of first signals includes M first signals, where M is an integer greater than or equal to 1.

Optionally, the M first signals satisfy at least one of the following:

The value of M is predefined, preconfigured, configured, or indicated by the network side;

The size and/or location of the resources of the M first signals are predefined, preconfigured, configured or indicated by the network side;

The M first signals are repeated signals;

The M first signals are non-repetitive signals;

The M first signals include repetitive signals and non-repetitive signals.

Optionally, when the M first signals are repeated signals, the number of repetitions satisfies at least one of the following:

The value of the number of repetitions is a value predefined, preconfigured, configured or indicated by the network side;

In the case of training the target parameter, the number of repetitions is configured or indicated as M1, M1 being related to the parameter configuration of the first device;

In the case of training the fourth parameter, the number of repetitions is configured or indicated as N, where N is related to the parameter configuration of a third device, and the third device is a receiving end of the first signal sent by the first device.

Optionally, the transmission device 900 further includes at least one of the following:

A third sending module, configured to send first capability information, where the first capability information includes at least part of the parameters of the target parameters;

The third receiving module is used to receive fourth information, where the fourth information is used to configure or indicate at least part of the parameters of the target parameters.

The transmission device 900 provided in the embodiment of the present application can implement each process implemented by the first device in the method embodiment shown in Figure 4, and can achieve the same beneficial effects. To avoid repetition, it will not be described here.

Please refer to FIG. 10 . Another transmission device provided in an embodiment of the present application may be a device in a third device. As shown in FIG. 10 , the transmission device 1000 may include the following modules:

The measurement module 1001 is configured to receive a first signal and obtain a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device;

The first sending module 1002 is configured to send the measurement result.

Optionally, the third device receives the first signal, including at least one of the following:

Optionally, the second target parameter includes:

Optionally, the measurement module 1001 includes at least one of the following:

A second receiving unit, configured to receive the first information with a fourth parameter that is predefined, preconfigured, configured, or indicated by the network side;

The third receiving unit is configured to receive the first signal using N fourth parameters.

Optionally, the measurement result includes at least one of the following:

Channel state information reference signal resource identifier CRI;

Synchronization signal block resource identifier SSBRI;

Layer 1 reference signal received power L1-RSRP;

L1-RSRP difference;

Linear average of multiple ports;

Layer 1 signal to interference plus noise ratio L1-SINR;

Reference signal resource number;

Optionally, the number of the measurement results is L, where L is an integer greater than or equal to 1;

Optionally, the first sending module 1002 is specifically configured to:

The measurement results are sent on pre-configured or configured resources.

Optionally, the transmission device 1000 further includes:

The fourth receiving module is used to receive second indication information, where the second indication information is used to instruct or configure the third device to receive a second target parameter of the first signal.

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The third device receives a set of beams of the first signal.

Optionally, the first sending module 1002 is specifically configured to:

When the second indication information satisfies the first condition, sending the measurement result of the first signal with a first configuration parameter, where the first configuration parameter is a parameter for training and reporting the fourth parameter;

and / or,

When the second indication information satisfies a second condition, the measurement result of the first signal is sent with a second configuration parameter, where the second configuration parameter is a parameter for training and reporting the target parameter.

Optionally, the first condition includes at least one of the following:

The second indication information configures or indicates that the repetitive transmission state of the first signal is turned on, and the first signal is used for training the fourth parameter;

and / or,

The second condition includes at least one of the following:

The second indication information configures or indicates that the repetitive transmission state of the first signal is off, and the first signal Used for target parameter training;

Optionally, the measuring module 1001 is used to:

When a first preset condition is met, the first signal is received with preset parameters, or the third device assumes that the downlink spatial domain transmission filters are the same;

When a second preset condition is met, the first signal is received with at least two parameters.

Optionally, the first preset condition includes at least one of the following:

The repetitive transmission state of the first signal is off;

The transmit beam of the second device is repeated;

The transmission and/or reception beams of the first device are non-repetitive;

and / or,

The second preset condition includes at least one of the following:

The repeated transmission state of the first signal is on;

The first signal is repeatedly used for training a fourth parameter;

The transmit beam of the second device is repeated;

repetition of transmit and/or receive beams of the first device;

The receive beam of the third device does not repeat.

Optionally, the transmission device 1000 further includes:

A second determination module, configured to determine first identification information of a target parameter or second identification information of a reference signal resource corresponding to the target parameter, wherein the target parameter is used for transmission of the first signal by the first device;

The fourth sending module is used to send the first identification information or the second identification information.

Optionally, the transmission device 1000 further includes at least one of the following:

a fifth sending module, configured to send second capability information, where the second capability information includes at least part of a second target parameter, where the second target parameter is a parameter for the third device to receive the first signal;

The fifth receiving module is used to receive fifth information, where the fifth information is used to configure or indicate at least part of the parameters of the second target parameter.

The transmission device 1000 provided in the embodiment of the present application can implement the third device implementation in the method embodiment shown in FIG. The present processes are all the same and can achieve the same beneficial effects. To avoid repetition, they will not be described again here.

The parameter determination method provided in the embodiment of the present application may be executed by a parameter determination device. In the embodiment of the present application, the parameter determination device provided in the embodiment of the present application is described by taking the parameter determination method executed by the parameter determination device as an example.

Please refer to FIG. 11 . A parameter determination device provided in an embodiment of the present application may be a device in a second device. As shown in FIG. 11 , the parameter determination device 1100 may include the following modules:

The second sending module 1101 is used to send a first signal;

A first receiving module 1102 is configured to receive a measurement result, where the measurement result is a measurement result obtained by receiving and/or measuring the first signal forwarded by the first device;

The first determination module 1103 is configured to determine first information from a target parameter based on the measurement result, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.

Optionally, the target parameter includes at least one of the following:

Optionally, the second sending module 1101 includes:

A third sending unit, configured to send the first signal based on a third target parameter;

a fourth sending unit, configured to send data information based on third information, wherein the third information is determined from the third target parameter based on the measurement result;

A fifth sending unit is used to send a first signal based on a predefined, preconfigured or configured sending beam.

Optionally, the third target parameter includes:

Optionally, the first parameter is jointly trained with the second parameter;

or,

Optionally, the parameter determination device 1100 further includes:

a sixth sending module, configured to send first indication information to the first device, where the first indication information is used to indicate a target parameter for the first device to transmit a first signal;

and / or,

The seventh sending module is used to send second indication information to the third device, where the second indication information is used to instruct the third device to receive the second target parameter of the first signal.

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The first device receives a set of beams of a first signal;

The third device receives a set of beams of the first signal.

Optionally, the second target parameter includes N fourth parameters, and the parameter determination device 1100 further includes:

A third determining module, configured to determine a fourth parameter from the N fourth parameters according to the measurement result;

An eighth sending module is used to send indication information of the fourth parameter to the third device.

Optionally, the parameter determination device 1100 further includes at least one of the following:

a sixth receiving module, configured to receive first capability information from the first device, where the first capability information includes at least part of the target parameters;

a ninth sending module, configured to send fourth information to the first device, where the fourth information is used to configure or indicate at least part of the parameters of the target parameter;

a seventh receiving module, configured to receive second capability information from the third device, where the second capability information includes at least part of a second target parameter, where the second target parameter is a parameter for the third device to receive the first signal;

A tenth sending module is used to send fifth information to the third device, where the fifth information is used to configure or indicate at least part of the parameters of the second target parameters.

a fourth determination module, configured to determine a receiving parameter of the second device in an uplink transmission scenario according to a determined third parameter;

a fifth determination module, configured to determine a receiving and/or sending parameter of the first device in an uplink transmission scenario according to a determined target parameter;

The sixth determination module is used to determine a sending parameter of the third device in an uplink transmission scenario according to a determined fourth parameter.

The parameter determination device 1100 provided in the embodiment of the present application can implement each process implemented by the second device in the method embodiment shown in Figure 8, and can achieve the same beneficial effects. To avoid repetition, it will not be described here.

The information transmission device provided in the embodiment of the present application can implement the various processes implemented by the method embodiment shown in Figure 4 or Figure 7 or Figure 8, and achieve the same technical effect. To avoid repetition, it will not be repeated here.

Optionally, as shown in FIG12, the embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202, the memory 1202 stores a program or instruction that can be run on the processor 1201, for example, when the communication device 1200 is a first device, the program or instruction is executed by the processor 1201 to implement the various steps of the method embodiment shown in FIG4, and can achieve the same technical effect. When the communication device 1200 is a third device, the program When the program or instruction is executed by the processor 1201, each step of the method embodiment shown in FIG7 is implemented, and the same technical effect can be achieved. When the communication device 1200 is a second device, when the program or instruction is executed by the processor 1201, each step of the method embodiment shown in FIG8 is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

An embodiment of the present application also provides a first device, including a processor and a communication interface, wherein the communication interface is used to receive a first signal based on a target parameter, and/or send a first signal based on the target parameter; wherein the target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device; the communication interface is also used to send and/or receive data information based on first information, wherein the first information is determined from the target parameter based on a measurement result of the first signal.

The first device embodiment corresponds to the method embodiment shown in FIG. 4 . Each implementation process and implementation method of the method embodiment shown in FIG. 4 can be applied to the first device embodiment and can achieve the same technical effect.

An embodiment of the present application also provides a third device, including a processor and a communication interface, wherein the communication interface is used to receive a first signal and obtain a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device; the communication interface is also used to send the measurement result.

The third device embodiment corresponds to the method embodiment shown in FIG. 7 . Each implementation process and implementation method of the method embodiment shown in FIG. 7 can be applied to the third device embodiment and can achieve the same technical effect.

An embodiment of the present application also provides a second device, including a processor and a communication interface, wherein the communication interface is used to send a first signal and receive a measurement result, and the measurement result is a measurement result obtained by receiving and/or measuring the first signal forwarded by the first device; the processor is used to determine first information from a target parameter based on the measurement result, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.

The second device embodiment corresponds to the method embodiment shown in FIG8 . Each implementation process and implementation method of the method embodiment shown in FIG8 can be applied to the second device embodiment and can achieve the same technical effect.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the method embodiment shown in Figure 4, Figure 7, or Figure 8 are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the method embodiments shown in Figures 4, 7, or 8, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The present application embodiment further provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the method shown in FIG. 4 or FIG. 7 or FIG. 8. The various processes of the examples can achieve the same technical effect, and to avoid repetition, they will not be repeated here.

An embodiment of the present application also provides a communication system, including: a second device, a first device and a third device, wherein the first device can be used to execute the steps of the transmission method as described in Figure 4, the third device can be used to execute the steps of the transmission method as described in Figure 7, and the second device can be used to execute the steps of the parameter determination method as described in Figure 8.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

A transmission method, comprising:

The first device receives the first signal based on the target parameter, and/or sends the first signal based on the target parameter;

The target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device;

The first device sends and/or receives data information based on first information, wherein the first information is determined from the target parameter based on a measurement result of the first signal.
The method according to claim 1, wherein the target parameter comprises at least one of an incident angle, an incident beam, an exit angle, an exit beam, and control information of the first device.
The method according to claim 1, wherein the target parameter includes at least one of the following:

A first parameter, where the first parameter is a parameter for the first device to receive a first signal;

A second parameter, where the second parameter is a parameter of the first signal sent by the first device.
The method according to claim 3, wherein:

The first parameter is jointly trained with the second parameter;

or,

The first parameter, the second parameter and the third parameter are jointly trained, the third parameter is a parameter of a first signal sent by a second device, and the second device is a sending end of the first signal received by the first device.
The method according to any one of claims 1 to 4, wherein the parameter value of the target parameter satisfies at least one of the following:

Predefined parameter values;

Preconfigured parameter values;

Configuration parameter values;

Parameter value indicated by the network side;

The parameter value indicated by the identifier;

The first device determines a parameter value.
The method according to claim 1 or 4, wherein the number of target parameters is K, and K satisfies at least one of the following:

K is a value that is predefined, preconfigured, configured, or indicated by the network side;

K is a value greater than or equal to 1;

In the case of training the third parameter and/or the fourth parameter, K is equal to 1, the fourth parameter is a parameter for the third device to receive the first signal, and the third device is a receiving end of the first signal sent by the first device;

In the case of training the first parameter and/or the second parameter, K is greater than or equal to 1;

When training the target parameters, K is greater than or equal to 1.
The method according to claim 1, wherein the measurement result includes at least one of the following:

Channel state information reference signal resource identifier CRI;

Synchronization signal block resource identifier SSBRI;

Layer 1 reference signal received power L1-RSRP;

L1-RSRP difference;

Linear average of multiple ports;

Layer 1 signal to interference plus noise ratio L1-SINR;

Reference signal resource number;

The parameter number or control information number corresponding to the target parameter of the first device.
The method according to claim 1, wherein the method further comprises:

The first device receives first indication information, where the first indication information is used to indicate a target parameter of a first signal transmitted by the first device.
The method according to claim 8, wherein the first indication information is information carried by first signaling, and the first signaling includes at least one of the following:

F1 application protocol F1-AP signaling, radio resource control RRC signaling, media access control layer control unit MAC CE signaling, downlink control information DCI signaling, bandwidth allocation protocol data unit BAP PDU.
The method according to claim 8, wherein the first indication information is used to configure or indicate at least one of the following:

The repeated transmission state of the first signal is on, or the repeated transmission state of the first signal is off;

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated, and the second device is a transmitter of the first signal received by the first device;

The receiving beam of the third device is repeated or not repeated, and the third device is a receiving end of the first signal sent by the first device;

The transmission and/or reception beams of the first device are repeated or non-repeated;

The first device receives a set of beams of a first signal.
The method according to claim 8, wherein the first indication information satisfies at least one of the following:

The repetition transmission state of the first signal and the training object are jointly indicated, and the training object includes the target parameter or the fourth parameter;

Independently Indicating The repetition transmission state and the training object of the first signal are independently indicated.
The method according to claim 1 or 8, wherein the first device receives the first signal based on the target parameter, and/or sends the first signal based on the target parameter comprises:

When a first preset condition is met, the first device receives and/or sends a first signal with at least two target parameters;

When the second preset condition is met, the first device receives and/or sends the first signal with preset parameters, Or the first device assumes that the downlink spatial domain transmission filters are the same.
The method according to claim 12, wherein the first preset condition includes at least one of the following:

The repetitive transmission state of the first signal is off;

The first signal is repeatedly used for training the target parameter;

The repetitive transmission state of the first signal is on, and the first signal is repeatedly used for training the target parameter;

The first device is configured or instructed to perform beam training or transmit the first signal using at least two target parameters;

The transmission beam of the second device is repeated, and the second device is a transmitter of the first signal received by the first device;

The transmission and/or reception beams of the first device are non-repetitive;

The receiving beam of the third device is repeated, and the third device is a receiving end of the first signal sent by the first device;

and / or,

The second preset condition includes at least one of the following:

The repeated transmission state of the first signal is on;

The first signal is repeatedly used for training a fourth parameter;

The third device is configured or instructed to perform beam training and/or receive a set of first signals using at least two fourth parameters;

The transmit beam of the second device is repeated;

repetition of transmit and/or receive beams of the first device;

The receiving beam of the third device is non-repetitive.
The method according to any one of claims 1 to 4, wherein the first device receives a first signal based on a target parameter, comprising:

The first device receives a group of first signals based on a target parameter, where the group of first signals includes M first signals, where M is an integer greater than or equal to 1.
The method according to claim 14, wherein the M first signals satisfy at least one of the following:

The value of M is predefined, preconfigured, configured, or indicated by the network side;

The size and/or location of the resources of the M first signals are predefined, preconfigured, configured or indicated by the network side;

The M first signals are repeated signals;

The M first signals are non-repetitive signals;

The M first signals include repetitive signals and non-repetitive signals.
The method according to claim 15, wherein, when the M first signals are repeated signals, the number of repetitions satisfies at least one of the following:

The value of the number of repetitions is a value predefined, preconfigured, configured or indicated by the network side;

In the case of training the target parameter, the number of repetitions is configured or indicated as M1, M1 being related to the parameter configuration of the first device;

In the case of training the fourth parameter, the number of repetitions is configured or indicated as N, which is the same as the parameter configuration of the third device. The third device is related to the first device, and the third device is a receiving end of the first signal sent by the first device.
The method according to any one of claims 1 to 4, wherein, before the first device receives the first signal based on the target parameter and/or sends the first signal based on the target parameter, the method further comprises at least one of the following:

The first device sends first capability information, where the first capability information includes at least part of the target parameters;

The first device receives fourth information, where the fourth information is used to configure or indicate at least part of the parameters of the target parameters.
A transmission method, the method comprising:

The third device receives the first signal and obtains a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device;

The third device sends the measurement result.
The method according to claim 18, wherein the third device receives the first signal, comprising at least one of the following:

The third device receives the first signal based on the second target parameter;

The third device receives data information based on second information, where the second information is determined from the second target parameter based on the measurement result;

The third device receives the first signal with a predefined, preconfigured or configured receive beam.
The method according to claim 19, wherein the second target parameter includes at least one of a receiving angle, a receiving beam, and control information of the third device.
The method of claim 19, wherein the second target parameter comprises:

A fourth parameter, where the fourth parameter is a parameter for the third device to receive the first signal.
The method of claim 21, wherein the third device receives the first signal based on the second target parameter, comprising at least one of the following:

The third device receives the first information with a fourth parameter that is predefined, preconfigured, configured, or indicated by the network side;

The third device receives the first signal with N fourth parameters.
The method according to any one of claims 18 to 22, wherein the measurement result includes at least one of the following:

Channel state information reference signal resource identifier CRI;

Synchronization signal block resource identifier SSBRI;

Layer 1 reference signal received power L1-RSRP;

L1-RSRP difference;

Linear average of multiple ports;

Layer 1 signal to interference plus noise ratio L1-SINR;

Reference signal resource number;

The parameter number or control information number corresponding to the target parameter of the first device.
The method according to claim 23, wherein the number of the measurement results is L, and L is an integer greater than or equal to 1;

The value of L is predefined, preconfigured, configured, indicated by the network side or determined by the third device.
The method according to any one of claims 18 to 22, wherein the third device sending the measurement result comprises:

The third device sends the measurement result on a preconfigured or configured resource.
The method according to any one of claims 18 to 22, wherein the method further comprises:

The third device receives second indication information, where the second indication information is used to indicate or configure the third device to receive a second target parameter of the first signal.
The method according to claim 26, wherein the second indication information is used to configure or indicate at least one of the following:

The repeated transmission state of the first signal is on, or the repeated transmission state of the first signal is off;

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The transmission and/or reception beams of the first device are repeated or non-repeated;

The third device receives a set of beams of the first signal.
The method according to claim 27, wherein the third device sending the measurement result comprises:

When the second indication information satisfies the first condition, the third device sends the measurement result of the first signal using a first configuration parameter, where the first configuration parameter is a parameter for training and reporting the fourth parameter;

and / or,

When the second indication information satisfies the second condition, the third device sends the measurement result of the first signal using a second configuration parameter, where the second configuration parameter is a parameter for training and reporting the target parameter.
The method according to claim 28, wherein the first condition includes at least one of the following:

The second indication information configures or indicates that the repeated transmission state of the first signal is turned on;

The second indication information configures or indicates that the repetitive transmission state of the first signal is turned on, and the first signal is used for training the fourth parameter;

and / or,

The second condition includes at least one of the following:

The second indication information configures or indicates that the repetitive transmission state of the first signal is off, and the first signal is used for target parameter training;

The second indication information configures or indicates that the repeated transmission state of the first signal is turned on, and the first signal is used for training the target parameter.
The method according to claim 18, wherein the third device obtains a measurement result of the first signal, include:

When the first preset condition is met, the third device receives the first signal with preset parameters, or the third device assumes that the downlink spatial domain transmission filters are the same;

When a second preset condition is met, the third device receives the first signal with at least two parameters.
The method according to claim 30, wherein the first preset condition includes at least one of the following:

The repetitive transmission state of the first signal is off;

The first signal is repeatedly used for training the first parameter and/or the second parameter;

The repetitive transmission state of the first signal is on, and the first signal is repeatedly used for training the first parameter and/or the second parameter;

The first device is configured or instructed to perform beam training or transmit the first signal using at least two target parameters;

The transmit beam of the second device is repeated;

The transmission and/or reception beams of the first device are non-repetitive;

The receiving beam of the third device is repeated, and the third device is a receiving end of the first signal sent by the first device;

and / or,

The second preset condition includes at least one of the following:

The repeated transmission state of the first signal is on;

The first signal is repeatedly used for training a fourth parameter;

The third device is configured or instructed to perform beam training or receive a group of first signals in a beam scanning manner;

The transmit beam of the second device is repeated;

repetition of transmit and/or receive beams of the first device;

The receive beam of the third device does not repeat.
The method according to claim 18, wherein the method further comprises:

The third device determines first identification information of a target parameter or second identification information of a reference signal resource corresponding to the target parameter, wherein the target parameter is used for transmission of the first signal by the first device;

The third device sends the first identification information or the second identification information.
The method according to any one of claims 18 to 22, wherein the method further comprises at least one of the following:

The third device sends second capability information, where the second capability information includes at least part of a second target parameter, where the second target parameter is a parameter for the third device to receive the first signal;

The first device receives fifth information, where the fifth information is used to configure or indicate at least part of parameters of the second target parameter.
A parameter determination method, the method comprising:

The second device sends a first signal;

The second device receives a measurement result, wherein the measurement result is a measurement result of receiving the first signal forwarded by the first device. measurement results received and/or measured;

The second device determines first information from a target parameter based on the measurement result, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.
The method according to claim 34, wherein the target parameter includes at least one of an incident angle, an incident beam, an exit angle, an exit beam, and control information of the first device.
The method according to claim 35, wherein the target parameter includes at least one of the following:

A first parameter, where the first parameter is a parameter for the first device to receive a first signal;

A second parameter, where the second parameter is a parameter of the first signal sent by the first device.
The method according to claim 34, wherein the second device sending the first signal comprises:

The second device sends a first signal based on a third target parameter;

The second device sends data information based on third information, wherein the third information is determined from the third target parameter based on the measurement result;

The second device transmits a first signal based on a predefined, preconfigured or configured transmit beam.
The method according to claim 37, wherein the third target parameter includes at least one of a transmit angle, a transmit beam, and control information of the second device.
The method of claim 37, wherein the third target parameter comprises:

A third parameter, where the third parameter is a parameter for the second device to send the first signal.
The method according to claim 36 or 39, wherein:

The first parameter is jointly trained with the second parameter;

or,

The first parameter, the second parameter and the third parameter are trained jointly.
The method according to any one of claims 34 to 39, wherein the method further comprises:

The second device sends first indication information to the first device, where the first indication information is used to indicate a target parameter for the first device to transmit a first signal;

and / or,

The second device sends second indication information to the third device, where the second indication information is used to instruct the third device to receive a second target parameter of the first signal.
The method according to claim 41, wherein the first indication information and/or the second indication information is used to configure or indicate at least one of the following:

The repeated transmission state of the first signal is on, or the repeated transmission state of the first signal is off;

The first signal is repeatedly used to train the target parameter;

The first signal is repeatedly used to train a fourth parameter;

The transmission beam of the second device is repeated or non-repeated;

The receiving beam of the third device is repeated or not;

The transmission and/or reception beams of the first device are repeated or non-repeated;

The first device receives a set of beams of a first signal;

The third device receives a set of beams of the first signal.
The method according to claim 41, wherein the second target parameter includes N fourth parameters, and the method further comprises:

The second device determines a fourth parameter from the N fourth parameters according to the measurement result;

The second device sends indication information of the fourth parameter to the third device.
The method according to any one of claims 34 to 39, wherein the method further comprises at least one of the following:

The second device receives first capability information from the first device, where the first capability information includes at least part of the target parameters;

The second device sends fourth information to the first device, where the fourth information is used to configure or indicate at least part of the parameters of the target parameter;

The second device receives second capability information from a third device, where the second capability information includes at least part of a second target parameter, where the second target parameter is a parameter for the third device to receive the first signal;

The second device sends fifth information to the third device, where the fifth information is used to configure or indicate at least part of parameters of the second target parameter.
The method according to claim 44, wherein the method further comprises at least one of the following:

The second device determines, according to a determined third parameter, a receiving parameter of the second device in an uplink transmission scenario;

The second device determines, according to a determined target parameter, a receiving and/or sending parameter of the first device in an uplink transmission scenario;

The second device determines a sending parameter of the third device in an uplink transmission scenario according to a determined fourth parameter.
A transmission device, applied to a first device, comprising:

A first transmission module, configured to receive a first signal based on a target parameter, and/or send a first signal based on a target parameter; wherein the target parameter includes at least one of the following: a receiving parameter of the first device, a sending parameter of the first device;

The second transmission module is used to send and/or receive data information based on first information, wherein the first information is determined from the target parameter based on the measurement result of the first signal.
A transmission device, applied to a third device, comprising:

a measurement module, configured to receive a first signal and obtain a measurement result of the first signal, wherein the first signal is a signal sent by the second device and forwarded by the first device;

The first sending module is used to send the measurement result.
A parameter determination device, applied to a second device, comprising:

A second sending module, used for sending a first signal;

A first receiving module is used to receive a measurement result, where the measurement result is the first signal forwarded to the first device. receiving and/or measuring measurement results;

The first determination module is configured to determine first information from a target parameter based on the measurement result, wherein the target parameter includes at least one of the following: a receiving parameter of the first device and a sending parameter of the first device.
A communication device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the transmission method as described in any one of claims 1 to 33 are implemented, or the steps of the parameter determination method as described in any one of claims 34 to 45 are implemented.
A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the transmission method as described in any one of claims 1 to 33, or implements the steps of the parameter determination method as described in any one of claims 34 to 45.