Communication method and apparatus

Abstract

The present application provides a communication method and an apparatus and belongs to the technical field of communications. The method comprises: determining a wake-up signal (WUS), and sending the WUS to a reconfigurable intelligent surface (RIS), wherein the WUS is used for instructing the RIS to be adjusted to an activated state, and the WUS corresponds to configuration information of the RIS in the activated state. Thus, the WUS corresponds to the configuration information of the RIS in the activated state, and simply by sending the WUS to the RIS, the RIS can know the certain configuration information that should be used in the activated state, and configuration of the RIS is not need, such that the time delay of configuring RISs can be reduced, thereby avoiding communication performance loss.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on October 31, 2023, with application number 202311439033.1 and application name “Communication Method and Device,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to a communication method and device. Background Art

[0003] Currently, the industry is discussing the introduction of a reconfigurable intelligent surface (RIS). To enable network reconfiguration of the RIS, the network needs to send control signaling to the RIS, such as configuring the reflection coefficient or beam direction. To reduce RIS power consumption, the network can put the RIS into a dormant state when it is not needed and continuously detect a wake-up signal (WUS) to wake it up on demand. Therefore, based on existing technical solutions, the network can use a dedicated low-power wake-up signal (LP-WUS) and a low-power wake-up receiver (LP-WUR) to first wake up the RIS and then configure it.

[0004] However, the use of dedicated LP-WUS and LP-WUR configurations results in significant latency, which can lead to performance degradation. Therefore, reducing the latency of configuring RIS is a hot topic of current research.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide a communication method and apparatus for reducing the delay in configuring RIS.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] In a first aspect, a communication method is provided, comprising: determining a wake-up signal WUS and sending the WUS to a RIS, wherein the WUS is used to instruct a smart metasurface (RIS) to adjust to an active state, and the WUS corresponds to configuration information of the RIS in the active state.

[0009] From this, we can see that since WUS corresponds to the configuration information of RIS in the activated state, RIS can know what configuration information should be used in the activated state by simply sending WUS to RIS, without the need to configure RIS again. This can reduce the delay in configuring RIS and avoid communication performance loss.

[0010] It is understood that the method described in the first aspect can be executed by a network device, such as an access network device, an apparatus including a network device, or a chip within a network device, without limitation. For ease of description, the following description uses the method executed by an access network device as an example.

[0011] In one possible design, the WUS includes a first WUS corresponding to the first configuration information. The configuration information includes the first configuration information, the first configuration information being used to indicate an angle of a first reflected beam and a first effective time when the RIS is activated, where the first effective time is the effective time of the angle of the first reflected beam.

[0012] That is, by sending the first WUS to the RIS, the access network device can implicitly instruct the RIS to reflect the beam at a certain angle within a certain time period, thereby avoiding the overhead and delay caused by configuring the time period and the angle of the reflected beam.

[0013] It is also understood that the angle of the first reflected beam can be replaced by any other possible expression, such as a first reflection coefficient, which can determine the angle of the first reflected beam of the RIS. Of course, the first configuration information can also be used to indicate other parameters of the RIS, such as the transmission angle, transmission coefficient, reflection angle and transmission angle, reflection coefficient and transmission coefficient (applicable to new RIS that support both reflection and transmission), etc., without limitation. For ease of understanding, this embodiment of the application uses the effective time and the angle of the reflected beam as examples.

[0014] Optionally, before sending the WUS to the RIS, the method described in the first aspect may further include: sending a correspondence between the first WUS and the first configuration information to the RIS, so that upon receiving the first WUS, the RIS can independently determine the corresponding first configuration information based on the correspondence. Alternatively, sending a functional relationship between the first WUS and the first configuration information to the RIS, so that upon receiving the first WUS, the RIS can independently calculate the first configuration information based on the functional relationship.

[0015] Of course, the corresponding relationship or functional relationship can also be pre-configured or pre-defined by protocol in the RIS locally, and does not need to be sent, so as to reduce overhead.

[0016] Optionally, the functional relationship may include:

[0017] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0018] It is understood that the above functional relationship applies not only to the angle between the first WUS signal and the first reflected beam, but also to the angles between other WUS signals and other reflected beams. In other words, for any WUS to which the functional relationship applies, the RIS can calculate the corresponding reflected beam angle using this functional relationship.

[0019] Optionally, the functional relationship may include:

[0020] First effective time = reference time point + first WUS serial number * time scaling factor * time unit.

[0021] It is also understood that the above functional relationship applies not only to the angle between the first WUS signal and the first effective time, but also to other WUS signals and effective times. In other words, for any WUS that can be applied to the functional relationship, the RIS can calculate the corresponding effective time using this functional relationship.

[0022] In one possible design, the WUS includes a first WUS and a second WUS, and the configuration information includes first configuration information and second configuration information. The first WUS corresponds to the first configuration information, and the second WUS corresponds to the second configuration information. The first configuration information indicates the angle of the first reflected beam when the RIS is activated; the second configuration information indicates the first effective time, which is the effective time of the first reflected beam angle. In other words, the reflected beam angle and effective time can be indicated (or configured) separately through different WUSs, achieving decoupling of configurations and more flexible configuration of different parameters.

[0023] Optionally, before sending the WUS to the RIS, the method described in the first aspect may further include: sending to the RIS a correspondence between the first WUS and the first configuration information, and a correspondence between the second WUS and the second configuration information, so that upon receiving the first WUS and the second WUS, the RIS can independently determine the corresponding first configuration information and second configuration information based on the correspondence. Alternatively, sending to the RIS a first functional relationship between the first WUS and the first configuration information, and a second functional relationship between the second WUS and the second configuration information, so that upon receiving the first WUS and the second WUS, the RIS can independently calculate the corresponding first configuration information and second configuration information based on the functional relationship.

[0024] Of course, the corresponding relationship or functional relationship can also be pre-configured or pre-defined by protocol in the RIS locally, and does not need to be sent, so as to reduce overhead.

[0025] Optionally, the first functional relationship may include:

[0026] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0027] It is understood that this first functional relationship applies not only to the angle between the first WUS signal and the first reflected beam, but also to the angles between other WUS signals and other reflected beams. In other words, for any WUS that can be applied to the first functional relationship, the RIS can calculate the corresponding reflected beam angle using the first functional relationship.

[0028] Optionally, the second functional relationship may include:

[0029] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0030] It is understood that this second functional relationship applies not only to the angle between the first WUS signal and the first reflected beam, but also to the angles between other WUS signals and other reflected beams. In other words, for any WUS that can be applied to the second functional relationship, the RIS can calculate the corresponding reflected beam angle using the second functional relationship.

[0031] Optionally, the method described in the first aspect may further include: sending at least one of the following to the RIS: a reference angle or an angle scaling factor, to instruct the RIS to calculate the reflected beam angle according to network-configured parameters, thereby preventing the RIS from calculating the reflected beam angle incorrectly due to using incorrect parameters. Of course, at least one of the reference angle or the angle scaling factor may also be preconfigured or predefined locally in the RIS by a protocol, eliminating the need for transmission to reduce overhead.

[0032] Optionally, the method described in the first aspect may further include: sending at least one of the following to the RIS: a reference time point, a time scaling factor, or a time unit, to instruct the RIS to calculate the effective time according to network-configured parameters, thereby preventing the RIS from incorrectly calculating the effective time due to incorrect parameters. Of course, at least one of the reference time point, time scaling factor, or time unit may also be preconfigured or predefined locally in the RIS by a protocol, eliminating the need for sending, thereby reducing overhead.

[0033] In a possible design, sending the WUS to the RIS includes sending the WUS to the RIS during the duration of the RIS, where the duration is the time the RIS uses to detect the WUS in each cycle of the sleep state, so as to avoid communication redundancy caused by sending the WUS during non-duration periods.

[0034] Optionally, the method of the first aspect may further include: sending information indicating the duration to the RIS to achieve alignment of transmission and reception.

[0035] In one possible design, after sending the WUS to the RIS, the method according to the first aspect may further include sending a first signal to the RIS. The first signal corresponds to instruction information, and the instruction information is used to instruct the RIS to adjust to a dormant state. This is used to timely trigger the RIS to enter a dormant state when it is no longer needed, thereby reducing RIS power consumption.

[0036] Optionally, sending the first signal to the RIS includes sending the first signal to the RIS within a first effective time. Accordingly, the RIS may perform a reception check for the first signal only within the first effective time, and not perform a reception check for the first signal at any time other than the first effective time. This not only avoids communication redundancy but also reduces power consumption of the RIS.

[0037] Optionally, before sending the first signal to the RIS, the method described in the first aspect may further include: sending a correspondence between the first signal and the indication information to the RIS to ensure that the RIS can correctly enter sleep after receiving the first signal without performing other erroneous operations.

[0038] In a possible design, WUS is a low-power sleep signal LP-WUS, so as to further reduce the power consumption of waking up RIS, thereby achieving both waking up RIS with low power consumption and reducing the delay of configuring RIS.

[0039] In a second aspect, a communication method is provided, comprising: receiving a wake-up signal WUS and adjusting to an active state according to the WUS. The WUS is used to instruct a smart metasurface (RIS) to adjust to the active state, and the WUS corresponds to configuration information of the RIS in the active state.

[0040] It is understood that the method described in the second aspect can be executed by a network device, such as a RIS, a device including a network device, or a chip within a network device, without limitation. For ease of description, the following description uses the method executed by a RIS as an example.

[0041] In one possible design, the WUS includes a first WUS corresponding to the first configuration information. The configuration information includes the first configuration information, the first configuration information being used to indicate an angle of a first reflected beam and a first effective time when the RIS is activated, where the first effective time is the effective time of the angle of the first reflected beam.

[0042] Optionally, before receiving the WUS, the method described in the second aspect may further include: receiving a correspondence relationship between the first WUS and the first configuration information; or receiving a functional relationship between the first WUS and the first configuration information.

[0043] Optionally, the functional relationship includes:

[0044] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0045] Optionally, the functional relationship includes:

[0046] First effective time = reference time point + first WUS serial number * time scaling factor * time unit.

[0047] In one possible design, the WUS includes a first WUS and a second WUS, and the configuration information includes first configuration information and second configuration information. The first WUS corresponds to the first configuration information, and the second WUS corresponds to the second configuration information. The first configuration information indicates the angle of a first reflected beam when the RIS is activated; the second configuration information indicates a first effective time, which is the effective period of the first reflected beam angle.

[0048] Optionally, before receiving the WUS, the method described in the second aspect may also include: receiving the correspondence between the first WUS and the first configuration information, and the correspondence between the second WUS and the second configuration information; or, receiving the first functional relationship between the first WUS and the first configuration information, and the second functional relationship between the second WUS and the second configuration information.

[0049] Optionally, the first functional relationship includes:

[0050] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0051] Optionally, the second functional relationship includes:

[0052] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0053] In a possible design scheme, the method described in the second aspect may further include: receiving at least one of the following: a reference angle, or an angle scaling factor.

[0054] In a possible design scheme, the method described in the second aspect may further include: receiving at least one of the following: a reference time point, a time scaling factor, or a time unit.

[0055] In a possible design, receiving the WUS includes: receiving the WUS within a duration of the RIS, where the duration is the time used by the RIS to detect the WUS in each cycle of the sleep state.

[0056] Optionally, the method described in the second aspect may further include: receiving information indicating duration.

[0057] Optionally, after receiving the WUS, the method described in the second aspect may further include: receiving a first signal, where the first signal corresponds to indication information, and the indication information is used to instruct the RIS to adjust to a dormant state.

[0058] In one possible design scheme, receiving the first signal includes: receiving the first signal within a first effective time.

[0059] Optionally, before receiving the first signal, the method described in the second aspect may further include: receiving a correspondence between the first signal and indication information.

[0060] In a possible design solution, WUS is a low power sleep signal LP-WUS.

[0061] It can be understood that the relevant technical effects of the method described in the second aspect can also refer to the relevant introduction of the first aspect, which will not be repeated here.

[0062] In a third aspect, a communication device is provided. The communication device includes: a module for executing the method described in any one of aspects 1 to 2, such as a transceiver module and a processing module. For example, the transceiver module is configured to indicate the transceiver function of the communication device, and the processing module is configured to perform functions of the communication device other than the transceiver function.

[0063] In a possible implementation, the communication device described in the third aspect includes a module for executing the method described in the first aspect, such as a transceiver module and a processing module.

[0064] The processing module is used to determine the wake-up signal WUS, and the transceiver module is used to send the WUS to the RIS. The WUS is used to instruct the smart metasurface RIS to adjust to an activated state, and the WUS corresponds to the configuration information of the RIS in the activated state.

[0065] In one possible design, the WUS includes a first WUS corresponding to the first configuration information. The configuration information includes the first configuration information, the first configuration information being used to indicate an angle of a first reflected beam and a first effective time when the RIS is activated, where the first effective time is the effective time of the angle of the first reflected beam.

[0066] Optionally, the transceiver module is configured to send the corresponding relationship between the first WUS and the first configuration information to the RIS before sending the WUS to the RIS; or send the functional relationship between the first WUS and the first configuration information to the RIS.

[0067] Optionally, the functional relationship may include:

[0068] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0069] Optionally, the functional relationship may include:

[0070] First effective time = reference time point + first WUS serial number * time scaling factor * time unit.

[0071] In one possible design, the WUS includes a first WUS and a second WUS, and the configuration information includes first configuration information and second configuration information. The first WUS corresponds to the first configuration information, and the second WUS corresponds to the second configuration information. The first configuration information indicates the angle of a first reflected beam when the RIS is activated; the second configuration information indicates a first effective time, which is the effective period of the first reflected beam angle.

[0072] Optionally, the transceiver module is used to send the correspondence between the first WUS and the first configuration information, and the correspondence between the second WUS and the second configuration information to the RIS before sending the WUS to the RIS; or, send the first functional relationship between the first WUS and the first configuration information, and the second functional relationship between the second WUS and the second configuration information to the RIS.

[0073] Optionally, the first functional relationship may include:

[0074] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0075] Optionally, the second functional relationship may include:

[0076] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0077] Optionally, the transceiver module is configured to send at least one of the following to the RIS: a reference angle, or an angle scaling factor.

[0078] Optionally, the transceiver module is configured to send at least one of the following to the RIS: a reference time point, a time scaling factor, or a time unit.

[0079] In one possible design, the transceiver module is configured to send the WUS to the RIS within the duration of the RIS, where the duration is the time the RIS uses to detect the WUS during each cycle of the sleep state.

[0080] Optionally, the transceiver module is configured to send information indicating the duration to the RIS.

[0081] In one possible design, the transceiver module is configured to send a first signal to the RIS after sending the WUS to the RIS, wherein the first signal corresponds to indication information, and the indication information is used to instruct the RIS to adjust to a dormant state.

[0082] Optionally, the transceiver module is configured to send a first signal to the RIS within a first effective time.

[0083] Optionally, the transceiver module is configured to send a correspondence between the first signal and the indication information to the RIS before sending the first signal to the RIS.

[0084] In a possible design solution, WUS is a low power sleep signal LP-WUS.

[0085] In another possible implementation, the communication device described in the third aspect includes a module for executing the method described in the second aspect, such as a transceiver module and a processing module.

[0086] The transceiver module is configured to receive a wake-up signal WUS. The processing module is configured to adjust the system to an active state based on the WUS. The WUS is used to instruct the intelligent metasurface (RIS) to adjust to an active state. The WUS corresponds to the configuration information of the RIS in the active state.

[0087] In one possible design, the WUS includes a first WUS corresponding to the first configuration information. The configuration information includes the first configuration information, the first configuration information being used to indicate an angle of a first reflected beam and a first effective time when the RIS is activated, where the first effective time is the effective time of the angle of the first reflected beam.

[0088] Optionally, the transceiver module is configured to receive a correspondence between the first WUS and the first configuration information before receiving the WUS; or receive a functional relationship between the first WUS and the first configuration information.

[0089] Optionally, the functional relationship includes:

[0090] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0091] Optionally, the functional relationship includes:

[0092] First effective time = reference time point + first WUS serial number * time scaling factor * time unit.

[0093] In one possible design, the WUS includes a first WUS and a second WUS, and the configuration information includes first configuration information and second configuration information. The first WUS corresponds to the first configuration information, and the second WUS corresponds to the second configuration information. The first configuration information indicates the angle of a first reflected beam when the RIS is activated; the second configuration information indicates a first effective time, which is the effective period of the first reflected beam angle.

[0094] Optionally, the transceiver module is used to receive the correspondence between the first WUS and the first configuration information, and the correspondence between the second WUS and the second configuration information before receiving the WUS; or, receive the first functional relationship between the first WUS and the first configuration information, and the second functional relationship between the second WUS and the second configuration information.

[0095] Optionally, the first functional relationship includes:

[0096] The angle of the first reflected beam = reference angle + the serial number of the first WUS * angle scaling factor.

[0097] Optionally, the second functional relationship includes:

[0098] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0099] In one possible design, the transceiver module is configured to receive at least one of the following: a reference angle or an angle scaling factor.

[0100] In one possible design, the transceiver module is configured to receive at least one of the following: a reference time point, a time scaling factor, or a time unit.

[0101] In one possible design, the transceiver module is configured to receive the WUS within the duration of the RIS, where the duration is the time the RIS uses to detect the WUS during each cycle of the sleep state.

[0102] Optionally, the transceiver module is used to receive information indicating the duration.

[0103] Optionally, the transceiver module is configured to receive a first signal after receiving the WUS, wherein the first signal corresponds to instruction information, and the instruction information is used to instruct the RIS to adjust to a dormant state.

[0104] In one possible design solution, the transceiver module is used to receive a first signal within a first effective time.

[0105] Optionally, the transceiver module is used to receive a correspondence between the first signal and the indication information before receiving the first signal.

[0106] In a possible design solution, WUS is a low power sleep signal LP-WUS.

[0107] Optionally, the transceiver module may include a sending module and a receiving module, wherein the sending module is used to implement the sending function of the communication device described in the third aspect, and the receiving module is used to implement the receiving function of the communication device described in the third aspect.

[0108] Optionally, the communication device described in the third aspect may further include a storage module, wherein the storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device may execute the method described in any one of the first aspect to the second aspect.

[0109] It can be understood that the communication device described in the third aspect can be a network device, or a chip (system) or other parts or components that can be set in the network device, or a device that includes a network device. This application does not limit this.

[0110] In addition, the technical effects of the communication device described in the third aspect can refer to the technical effects of the other aspects mentioned above and will not be repeated here.

[0111] In a fourth aspect, a communication device is provided, comprising: a processor configured to execute the method described in any one of the first to second aspects.

[0112] In one possible design solution, the communication device described in the fourth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the fourth aspect to communicate with other communication devices.

[0113] In one possible design, the communication device described in the fourth aspect may further include a memory. The memory may be integrated with the processor or provided separately. The memory may be used to store the computer program and / or data involved in the method described in any one of the first and second aspects.

[0114] In an embodiment of the present application, the communication device described in the fourth aspect can be the network device described in any one of the first to second aspects, or a chip (system) or other parts or components that can be set in the network device, or a device that includes the network device.

[0115] In addition, the technical effects of the communication device described in the fourth aspect can refer to the technical effects of the methods described in any one of the first aspect to the second aspect, and will not be repeated here.

[0116] In a fifth aspect, a communication device is provided, comprising: a processor coupled to a memory, the processor configured to execute a computer program stored in the memory, so that the communication device performs the method described in any one of the first to second aspects.

[0117] In one possible design solution, the communication device described in the fifth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the fifth aspect to communicate with other communication devices.

[0118] In an embodiment of the present application, the communication device described in the fifth aspect can be the network device described in any one of the first aspect to the second aspect, or a chip (system) or other parts or components that can be set in the network device, or a device that includes the network device.

[0119] In addition, the technical effects of the communication device described in the fifth aspect can refer to the technical effects of the methods described in any one of the first aspect to the second aspect, and will not be repeated here.

[0120] In a sixth aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store a computer program, and when the processor executes the computer program, the communication device executes the method described in any one of the first to second aspects.

[0121] In one possible design solution, the communication device described in the sixth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the sixth aspect to communicate with other communication devices.

[0122] In an embodiment of the present application, the communication device described in the sixth aspect can be the network device described in any one of the first aspect to the second aspect, or a chip (system) or other parts or components that can be set in the network device, or a device that includes the network device.

[0123] In addition, the technical effects of the communication device described in the sixth aspect can refer to the technical effects of the methods described in any one of the first aspect to the second aspect, and will not be repeated here.

[0124] In a seventh aspect, a chip is provided, comprising: a controller and an interface circuit, wherein the controller is used to interact with other devices through the interface circuit to execute the method described in any one of the first to second aspects.

[0125] In an eighth aspect, a communication system is provided, comprising: a first device for executing the method according to the first aspect, and a second device for executing the method according to the second aspect.

[0126] In a ninth aspect, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are run on a computer, the computer is caused to execute the method described in any one of the first to second aspects.

[0127] In a tenth aspect, a computer program product is provided, comprising a computer program or instructions, which, when executed on a computer, causes the computer to execute the method as described in any one of the first to second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0128] Figure 1 is a schematic diagram of the NCR architecture;

[0129] FIG2 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0130] FIG3 is a flow chart of a communication method according to an embodiment of the present application;

[0131] FIG4 is a schematic diagram of an application scenario of the communication method provided in an embodiment of the present application;

[0132] FIG5 is a first structural diagram of a communication device provided in an embodiment of the present application;

[0133] FIG6 is a second structural diagram of the communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0134] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless network (Wi-Fi) systems, vehicle to everything (V2X) communication systems, device-to-device (D2D) communication systems, Internet of Vehicles communication systems, fourth-generation (4G) mobile communication systems, such as long-term evolution (LTE) systems, world-wide interoperability for microwave access (WiMAX) communication systems, fifth-generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, such as 5.5G and sixth-generation (6G) mobile communication systems.

[0135] For ease of understanding, the technical terms involved in the embodiments of this application are first introduced below.

[0136] 1. Network-controlled repeater (NCR):

[0137] An NCR improves wireless signal coverage by receiving, amplifying, and forwarding wireless signals. The NCR includes a mobile termination (MT) module, which receives control signals from the base station. The NCR also includes a forward (FWD) module, which receives, amplifies, and forwards wireless signals. The NCR receives downlink control information (DCI) from the network. The NCR typically includes a power amplifier module, which consumes a lot of power.

[0138] NCR can be applied to communication scenarios with higher spectrum resources to improve the coverage of wireless signals. For example, to meet growing communication needs, wireless communication systems are introducing higher-frequency spectrum resources, such as millimeter wave and terahertz bands. At higher frequency bands, wireless signals experience greater path loss, affecting coverage distance. Therefore, an NCR solution can be adopted. As shown in Figure 1 below, the MT end of the NCR is responsible for detecting the DCI sent by the network, which contains network indication information (such as beam number and beam direction). The FWD segment of the NCR is responsible for receiving, amplifying, and forwarding wireless signals, helping to improve the coverage of wireless signals.

[0139] 2. Low-power wake-up signal (LP-WUS) and low-power wake-up receiver (LP-WUR):

[0140] In order to reduce power consumption and extend battery life, the receiver is usually put into sleep state, and then periodically detects the wake-up signal (WUS) to enter the active state. RIS usually does not work in sleep state, that is, it does not perform the signal reflection function to maintain low power consumption. RIS needs to work in the active state, that is, it performs the signal reflection function. When the transmitter needs to transmit data, it sends WUS to wake up the receiver, and then the transmitter and receiver continue to communicate. In the early days, WUS was a specific DCI format, and the receiver needed to perform DCI blind detection to detect WUS. However, since detecting DCI requires channel estimation and decoding, the overall process is relatively complicated, and the power consumption and complexity are relatively high.

[0141] The industry is currently discussing the introduction of dedicated LP-WUS and LP-WUR technologies. Potential LP-WUS modulation methods include on-off keying (OOK), frequency-shift keying (FSK), and amplitude-shift keying (ASK). Potential LP-WUR technologies include receivers based on RF envelope detection. The RF envelope detection process for LP-WUS is simpler than receiving DCI, thus reducing the power consumption of WUS during sleep mode and extending device battery life.

[0142] 3. Reconfigurable intelligent surface (RIS):

[0143] The industry is currently discussing the introduction of RIS. By introducing RIS nodes, wireless signal reflection can be increased and the angle and strength of reflected signals can be controlled. This can improve wireless signal coverage at a lower power cost. Introducing reflections can also increase the number of multipaths in wireless channels, thereby improving the capacity of multiple-input, multiple-output (MIMO) systems.

[0144] It is understandable that RIS is also called intelligent reflecting surface (IRS).

[0145] To reconfigure the RIS, the network must send control signaling to it, such as configuring the reflection coefficient or beam direction. To reduce RIS power consumption, the network can put the RIS into a dormant state when it's not needed and continuously monitor the WUS to wake it up on demand. Therefore, based on existing technical solutions, the network can either send a DCI-based WUS to wake the RIS, or use a dedicated LP-WUS and LP-WUR to wake the RIS first and then configure the RIS's reflection coefficient or beam direction via DCI.

[0146] However, if a DCI-based WUS is used, the MT side of the RIS will suffer from blind DCI detection, resulting in high power consumption and complexity, which violates the low-power goal of RIS. If a dedicated LP-WUS and LP-WUR are used, due to the limited amount of information that LP-WUS can carry, it only supports RIS wakeup. The network needs to wake up the RIS before configuring the RIS's reflection coefficient or beam direction. This results in a long delay in beam updates, resulting in poor communication performance.

[0147] In response to the above technical problems, the embodiments of the present application propose the following technical solutions.

[0148] The technical solution in this application will be described below with reference to the accompanying drawings.

[0149] In the embodiment of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information (such as the first indication information, the second indication information, or the third indication information below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can be achieved by means of the arrangement order of each information agreed in advance (such as specified in the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0150] In addition, the specific indication method can also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can be referred to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, there may be a situation where the indication methods for different information are different. In the specific implementation process, the required indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0151] It should be understood that the information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiments of this application. The sending period and / or sending time of these sub-information can be predefined, for example, predefined according to a protocol, or can be configured by the transmitting device by sending configuration information to the receiving device.

[0152] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present application do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or a communication device. The type of memory can be any form of storage medium, and the embodiments of the present application do not limit this.

[0153] The "protocol" involved in the embodiments of the present application may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol used in future communication systems. The embodiments of the present application do not make specific limitations on this.

[0154] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to perform judgment actions when implemented, nor does it mean that there are other limitations.

[0155] In the embodiments of the present application, "sending" and "receiving" indicate the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information being YY, which can include direct receiving from YY through the air interface, and also includes indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between a network device and a terminal device, between a network device and a network device, between a terminal device and a terminal device, or can be carried out within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, a trace or an interface.

[0156] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can represent A or B. "And / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, in the description of the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0157] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0158] To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is first described in detail using the communication system shown in Figure 2 as an example. For example, Figure 2 is a schematic diagram of the architecture of a communication system applicable to the communication method provided in the embodiments of the present application.

[0159] As shown in FIG2 , the communication system mainly includes: a first device and a second device.

[0160] The first device may be a network device, specifically a radio access network (RAN) device, also referred to as an access network device. The access network device may be a next-generation mobile communication system, such as a 6G access network device, such as a 6G base station. Alternatively, in the next-generation mobile communication system, the access network device may be named in other ways, all of which are within the scope of protection of the embodiments of this application, and this application does not impose any limitations thereon. Alternatively, the access network device may also include 5G, such as a gNB in ​​a new radio (NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in 5G, or it may also be a network node constituting a gNB, a transmission point (TRP / transmission point, TP) or a transmission measurement function (TMF), such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), an RSU with base station function, or a wired access gateway, or an unmanned / uncrewed aerial vehicle (UAV) base station (UAV-BS), or a 5G core network element, etc. Alternatively, the access network device may also include: an access point (AP) of a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, wearable devices, vehicle-mounted devices, etc.

[0161] Among them, the CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). It can be understood that the network device can be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into a network device in the access network RAN, or the CU can be divided into a network device in the core network CN, and there is no limitation here.

[0162] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0163] The embodiments of this application do not limit the device form factor of the access network device. The device used to implement the functions of the access network device can be the access network device; it can also be a device that supports the access network device to implement the functions, such as a chip system. The device can be installed in the access network device or used in conjunction with the access network device. In the embodiments of this application, the chip system can be composed of a chip or can include a chip and other discrete components.

[0164] The second device can also be a network device, such as a RIS, which is primarily used to reflect signals from a terminal or access network device in a specified direction. For example, the RIS may include multiple units, each of which can be used to reflect signals from a terminal or access network device in a specified direction. The RIS operates in full-duplex mode. The access network device can leverage this feature of the RIS to actively control the quality of the wireless channel between the access network device and the terminal (e.g., enhancing link gain, increasing the number of characteristic subchannels, etc.), thereby improving system performance, such as spectrum efficiency (SE) or energy efficiency (EE).

[0165] The embodiments of this application do not limit the device form factor of the RIS. For example, the device used to implement the functions of the RIS can be a RIS; it can also be a device that supports the RIS in implementing the functions, such as a chip system. This device can be installed in the RIS or used in conjunction with the RIS. In the embodiments of this application, the chip system can be composed of a chip or can include a chip and other discrete components. Alternatively, the RIS can be replaced by a network-controlled repeater (NCR).

[0166] In a communication system, the RIS can pre-configure the correspondence / functional relationship between different WUSs and different configuration information used by the RIS in its active state. For example, the RIS configuration information may include at least one of the following: the angle of the reflected beam (or reflection coefficient), the effective time, or the transmission coefficient. Therefore, the correspondence / functional relationship between different WUSs and different reflected beam angles and effective times can be configured, or the correspondence / functional relationship between different WUSs and different reflected beam angles and different WUSs and different effective times can be configured. In this way, by sending the WUS to the RIS, the access network device knows which configuration information to use in its active state, eliminating the need for RIS configuration. This reduces RIS configuration latency and avoids communication performance loss.

[0167] The following will describe the interaction process between network elements / devices in the above communication system in detail through a method embodiment in conjunction with Figure 3. The communication method provided in the embodiment of the present application can be applied to the above communication system and specifically applied to various scenarios mentioned in the above communication system, which will be described in detail below.

[0168] Figure 3 is a flow chart of a communication method provided in an embodiment of the present application. This communication method is applicable to the above-mentioned communication system and mainly involves the interaction between the access network device and the RIS.

[0169] As shown in Figure 3, the process of the communication method is as follows:

[0170] S301: The access network device determines a WUS.

[0171] The WUS can be used to wake up the RIS, or instruct the RIS to adjust to an active state, such as from a dormant state. Specifically, the WUS can be an LP-WUS to further reduce the power consumption of waking up the RIS, achieving both low-power waking up the RIS and reducing the latency of configuring the RIS. Alternatively, the WUS can be another type of WUS, or a newly defined WUS in the future.

[0172] Case 1:

[0173] A WUS can correspond to, or have a corresponding relationship with, the configuration information of a RIS in its activated state. For example, different WUSs can correspond to different configuration information of the RIS in its activated state, indicating that if the RIS is awakened by a certain WUS, the RIS must apply the configuration information corresponding to that WUS in its activated state. For example, different WUSs can be considered a WUS set, and different configuration information can also be considered a configuration information set. The corresponding relationship can be considered a one-to-one correspondence between the WUSs in the WUS set and the configuration information in the configuration information set. Furthermore, in the corresponding relationship, WUS can be a WUS sequence, such as a serial number, or can be replaced by any other possible designation, such as the WUS signal itself, the WUS serial number, the WUS pattern, the WUS logo, etc., without limitation.

[0174] Configuration information can be used to configure the functionality of the RIS when it is activated, such as indicating at least one of the following parameters: reflected beam angle, effective time, and transmission angle. The reflected beam angle indicates the angle along which the RIS must reflect the beam / signal when activated. This angle can be the angle difference from the normal transmission direction of the RIS's antenna panel, or it can be an angle based on a global coordinate system. The reflected beam angle can also be replaced with any other possible representation, such as a reflection coefficient, which determines the angle of the RIS's reflected beam. The effective time can indicate the time during which the corresponding reflected beam angle is valid and ineffective otherwise, such as one or more periodic time periods or one or more aperiodic time periods. Specifically, it can be measured in frames, radio frames, subframes, slots, or symbols. The transmission angle indicates the departure angle of the transmitted signal from the RIS. Therefore, different configuration information may indicate different reflected beam angles, effective times, and transmission angles. When RIS is awakened by a WUS, it needs to use the reflection beam angle, effective time, transmission angle, etc. corresponding to the WUS to work in the activated state.

[0175] For example, taking the example of WUS including the first WUS and the configuration information including the first configuration information, the first configuration information can be used to indicate (or, can also include) the angle of the first reflected beam and the first effective time of the RIS in the activated state. The angle of the first reflected beam can also be replaced by the first reflection coefficient that can determine the angle of the first reflected beam of the RIS. The first effective time can be the effective time of the angle of the first reflected beam. Of course, the first configuration information can also be used to indicate other parameters of the RIS, such as the transmission angle, the transmission coefficient, the reflection angle and the transmission angle, the reflection coefficient and the transmission coefficient (applicable to the new RIS that supports both reflection and transmission), etc., without limitation. For ease of understanding, the embodiment of the present application is introduced using the effective time and the angle of the reflected beam as an example. In this way, the first WUS can correspond to the first configuration information, that is, there is a corresponding relationship between the first WUS and the angle of the first reflected beam and the first effective time.

[0176] It can be understood that the above takes the correspondence between 1 WUS and 1 configuration information as an example. The WUS can also include other WUSs besides the first WUS, and the configuration information can also include other configuration information besides the first configuration information. Other WUSs can also correspond to other configuration information, such as the corresponding relationship between the angle of the reflected beam indicated by other configuration information and the effective time. The details can also be understood by referring to the above introduction, and will not be repeated here.

[0177] For easier understanding, the following is an example.

[0178] Example 1:

[0179] Taking LP-WUS as an example, an example of corresponding different LP-WUS and different configuration information may be shown in Table 1 below.

[0180] Table 1

[0181] As shown in Table 1, there is a correspondence between sequence 0, a reflected beam angle of (-10, 10)°, and an effective time of 1 time slot. This indicates that when the RIS is awakened by the LP-WUS with sequence number 0, it must use a reflected beam angle of (-10, 10)° for the next time slot. The angle (-10, 10)° can be the angle difference from the normal transmission direction of the RIS antenna panel, or it can be an angle based on the global coordinate system. Similarly, there is a correspondence between sequence 1, a reflected beam angle of (10, 10)°, and an effective time of 10 time slots. This indicates that when the RIS is awakened by the LP-WUS with sequence number 1, it must use a reflected beam angle of (10, 10)° for the next 10 time slots. The angle (10, 10)° can be the angle difference from the normal transmission direction of the RIS antenna panel, or it can be an angle based on the global coordinate system. And so on. That is, different LP-WUSs may correspond to the same type of parameters, such as the angle and effective time of the reflected beam, but the values ​​of the corresponding parameters of different LP-WUSs are different.

[0182] For another example, taking the example of a WUS including a first WUS and a second WUS, and the configuration information including the first configuration information and the second configuration information, the first configuration information can be used to indicate (or, can also include) the angle of the first reflected beam when the RIS is activated (or, can also be replaced by the first reflection coefficient). The second configuration information can be used to indicate (or, can also include) the first effective time. In this way, the first WUS can correspond to the first configuration information, that is, there is a corresponding relationship between the first WUS and the angle of the first reflected beam. The second WUS can correspond to the second configuration information, that is, there is a corresponding relationship between the second WUS and the first effective time.

[0183] It can be understood that the above takes the example of 2 WUS corresponding to 2 configuration information respectively. WUS can also include other WUS besides the first WUS and the second WUS, and the configuration information can also include other configuration information besides the first configuration information and the second configuration information. Other WUS can also correspond to other configuration information, such as having a corresponding relationship with the angle of the reflected beam indicated by other configuration information or the effective time. The details can also be understood by referring to the above introduction, and will not be repeated here.

[0184] For easier understanding, the following is an example.

[0185] Example 2:

[0186] Taking LP-WUS as an example, an example of corresponding different LP-WUS and different configuration information may be shown in Table 2 and Table 3 below.

[0187] Table 2

[0188] Table 3

[0189] As shown in Table 2, there is a corresponding relationship between sequence 0 and the reflected beam angle of (-10, 10)°, indicating that when the RIS is awakened by the LP-WUS with sequence number 0, the RIS needs to use the reflected beam angle of (-10, 10)°. Similarly, there is a corresponding relationship between sequence 1 and the reflected beam angle of (10, 10)°, indicating that when the RIS is awakened by the LP-WUS with sequence number 1, the RIS needs to use the reflected beam angle of (10, 10)°, and so on. This is not repeated here.

[0190] As shown in Figure 3, there is a corresponding relationship between sequence 4 and the effective time of one time slot. This means that when the RIS receives an LP-WUS with sequence number 4, it needs to use the angle reflection beam corresponding to the LP-WUS that woke up the RIS in the next time slot. Similarly, there is a corresponding relationship between sequence 5 and the effective time of 10 time slots. This means that when the RIS receives an LP-WUS with sequence number 5, it needs to use the angle reflection beam corresponding to the LP-WUS that woke up the RIS in the next 10 time slots. And so on. This is not repeated here.

[0191] That is to say, different LP-WUS can correspond to different types of parameters, such as one part of the LP-WUS corresponds to the angle of the reflection beam, and another part of the LP-WUS corresponds to the effective time, and the values ​​of the parameters corresponding to different LP-WUS are also different. In this way, the LP-WUS in Table 2 and Table 3 can arbitrarily jointly indicate complete parameters. For example, sequence 0 and sequence 4 jointly indicate: when the RIS is awakened by the LP-WUS with sequence numbers 0 and 4, the RIS needs to use the (-10, 10)° angle reflection beam in the next time slot. For another example, sequence 1 and sequence 5 jointly indicate: when the RIS is awakened by the LP-WUS with sequence numbers 1 and 5, the RIS needs to use the (-10, 10)° angle reflection beam in the next 10 time slots, and so on, which will not be repeated here.

[0192] Case 2:

[0193] A WUS may also have a functional relationship with the configuration information of the RIS in its activated state. For example, different WUSs, such as any WUS applicable to the functional relationship, may be calculated using the functional relationship to obtain different configuration information. Alternatively, different configuration information, such as any configuration information applicable to the functional relationship, may be calculated using the functional relationship to obtain different WUSs, indicating that if the RIS is awakened by a certain WUS, the RIS must apply the configuration information corresponding to that WUS in its activated state.

[0194] Among them, the functional relationship may include: the angle of the reflected beam = reference angle + WUS serial number * angle scaling factor, and the effective time = reference time point + WUS serial number * time scaling factor * time unit. Among them, the angle of the reflected beam can also be replaced by the corresponding reflection coefficient. The values ​​of the reference angle, angle scaling factor, reference time point and time scaling factor can be set according to actual conditions and are not limited to this. The time unit can be consistent with the effective time. For example, if the effective time is in time slots, then the time unit is the time slot. For example, if the effective time is in symbols, then the time unit is the symbol.

[0195] It is understood that in the above functional relationship, the WUS serial number can be replaced by any other possible name, such as the WUS signal itself, the WUS sequence, the WUS pattern, the WUS logo, etc., without limitation. In addition, the functional relationship can also be configured in the form of a table / table item, so that the corresponding configuration information is determined by traversing the table / table item.

[0196] For example, taking the case where the WUS includes the first WUS described above, and the configuration information includes the first configuration information described above, the functional relationship described above represents the functional relationship between the first WUS and the first configuration information, such as: the angle of the first reflected beam = the reference angle + the serial number of the first WUS * the angle scaling factor, and the first effective time = the reference time point + the serial number of the first WUS * the time scaling factor * the time unit. Furthermore, the first WUS may be replaced with another WUS. That is, different WUSs may calculate the same type of parameters, such as the angle of the reflected beam and the effective time, through the functional relationship. However, different WUSs may calculate different values ​​for the parameters through the functional relationship.

[0197] For another example, taking the case where the WUS includes the first WUS and the second WUS mentioned above, and the configuration information includes the first configuration information and the second configuration information mentioned above, the above functional relationship can represent a first functional relationship between the first WUS and the first configuration information, and a second functional relationship between the second WUS and the second configuration information. The first functional relationship includes the angle of the first reflected beam = reference angle + serial number of the first WUS * angle scaling factor, and the second functional relationship includes the first effective time = reference time point + serial number of the second WUS * time scaling factor * time unit. That is, different WUSs can obtain different types of parameters through functional relationships, and different WUSs can obtain different values ​​of parameters calculated through functional relationships.

[0198] The access network device can choose to use RIS to enhance the communication quality between the terminal and the terminal according to the situation of the terminal. For example, the access network device determines that there is interference or poor communication quality between the access network device and the terminal through perception, artificial intelligence (AI) model prediction, pilot measurement, terminal reporting, etc., and therefore determines to use RIS to assist in enhancing the communication quality between the access network device and the terminal. The access network device can determine the configuration information of RIS. For example, the access network device can determine which configuration information to use for RIS based on the location of the terminal or beam measurement, such as the angle of the reflected beam, the effective time, etc., so that the reflected beam of RIS can point to the location of the terminal more accurately within the time when the terminal has communication needs. In this way, the access network device can determine the WUS corresponding to the configuration information, such as the first WUS and / or the second WUS, based on the configuration information.

[0199] S302: The access network device sends a WUS to the RIS, and the RIS receives the WUS.

[0200] The access network device may send a WUS, such as the first WUS described above, or the first WUS and the second WUS, to the RIS during the duration of the RIS. Accordingly, the RIS may also receive a WUS during the duration. The duration may be the time the RIS uses to detect a WUS during each sleep cycle, to avoid communication redundancy caused by sending a WUS during non-duration periods.

[0201] Optionally, the access network device may send the duration to the RIS in advance, for example, by sending information indicating the duration. This information may include one or more of the following: a WUS detection period in the sleep state, such as 40ms; the duration of each WUS detection, such as 5ms; or a time offset, such as 10ms. Together, these indicate the time the RIS should use to detect WUS within each sleep state period. For example, within each 40ms period, WUS detection should be initiated between 15ms and 20ms, with no detection performed during the remaining time. Alternatively, the duration may be preconfigured or predefined locally in the RIS by a protocol.

[0202] It is understood that the access network device may send the first WUS and the second WUS in different time periods within the duration, such as sending the first WUS first and then the second WUS, or sending the second WUS first and then the first WUS. Alternatively, the access network device may send them simultaneously within the duration, without limitation.

[0203] S303: RIS is adjusted to an activated state according to WUS.

[0204] When the RIS is in an activated state, the FWD end of the RIS is powered on, or in other words, the FWD end is started to perform directionally reflecting the received beam.

[0205] If the access network device only sends the first WUS, the RIS may be adjusted to an active state in response to receiving the first WUS.

[0206] If the access network device sends the first WUS and the second WUS simultaneously, the RIS may be adjusted to an activated state in response to receiving one of the WUSs (eg, the first WUS or the second WUS, with no limitation on the specific implementation).

[0207] If the access network device sends a first WUS and a second WUS in a time-sharing manner, the RIS can trigger itself to continue receiving detection based on the first WUS received. Upon receiving a subsequent WUS, the RIS can trigger a transition from a dormant state to an active state. For example, if the RIS receives the first WUS first, the RIS can trigger a timer in response to receiving the first WUS, and continue receiving detection within the timer's timeout period. If the RIS detects receipt of the second WUS within the timer's timeout period, the RIS can transition to an active state in response to receiving the second WUS. Otherwise, the RIS can remain in a dormant state.

[0208] It should be understood that in the case of sending WUS in time, the number of WUS sent in time needs to be aligned in advance between RIS and the access network device, such as through pre-configuration or protocol pre-defined method. In this way, RIS can know which WUS received is the last WUS to trigger adjustment to the activation state.

[0209] The RIS can also pre-configure or pre-define the same correspondence as the aforementioned access network devices, such as the correspondence or functional relationship between the WUS and the configuration information of the RIS in the activated state. The specific implementation can also refer to the relevant description above and will not be repeated here. In this way, the RIS can determine the corresponding configuration information based on the received WUS, such as the angle of the first reflected beam and the first effective time, to enable this configuration information in the activated state, thereby operating according to the parameters indicated by the configuration information.

[0210] In summary, since WUS corresponds to the configuration information of RIS in the activated state, RIS can know what configuration information should be used in the activated state by simply sending WUS to RIS, without the need to configure RIS again. This can reduce the delay in configuring RIS and avoid communication performance loss.

[0211] Optionally, in combination with the above situation 1, before S302, the method may further include: the access network device sends the correspondence relationship between the WUS and the configuration information to the RIS. Correspondingly, the RSI receives the correspondence relationship between the WUS and the configuration information.

[0212] As described above, the correspondence between the WUS and the configuration information can be a one-to-one correspondence between the WUSs in the WUS set and the configuration information in the configuration information set. For example, the correspondence between the first WUS and the first configuration information can be included, so that upon receiving the first WUS, the RIS can independently determine the corresponding first configuration information, such as the angle of the first reflected beam and the first effective time, based on the correspondence. Alternatively, the correspondence between the first WUS and the first configuration information and the correspondence between the second WUS and the second configuration information can be included, so that upon receiving the first WUS and the second WUS, the RIS can independently determine the corresponding first configuration information, such as the angle of the first reflected beam, and the second configuration information, such as the first effective time, based on the correspondence. Of course, the above correspondence can also be preconfigured or predefined by protocol in the RIS locally, without the need to send it, to reduce overhead.

[0213] Optionally, in combination with the above situation 2, before S302, the method may further include: the access network device sends the functional relationship between the WUS and the configuration information to the RIS. Correspondingly, the RSI receives the functional relationship between the WUS and the configuration information.

[0214] As described above, the functional relationship can represent the functional relationship between different WUSs and different configuration information. For example, the functional relationship can represent the functional relationship between the first WUS and the first configuration information, so that when the RIS receives the first WUS, it can automatically calculate the corresponding first configuration information, such as the angle of the first reflected beam and the first effective time, based on the functional relationship. Alternatively, the functional relationship can also represent the first functional relationship between the first WUS and the first configuration information, so that when the RIS receives the first WUS, it can automatically calculate the corresponding first configuration information, such as the angle of the first reflected beam, based on the functional relationship; and the functional relationship can also represent the second functional relationship between the second WUS and the second configuration information, so that when the RIS receives the second WUS, it can automatically calculate the corresponding second configuration information, such as the first effective time, based on the functional relationship. Of course, the above-mentioned functional relationship can also be pre-configured or pre-defined by protocol locally in the RIS, without the need to send it, in order to reduce overhead.

[0215] Optionally, the access network device may further transmit at least one of the following to the RIS: a reference angle, an angle scaling factor, a reference time point, a time scaling factor, or a time unit. The RIS may then receive at least one of the above information to instruct it to calculate the reflected beam angle and effective time according to network-configured parameters, thereby preventing the RIS from incorrectly calculating the reflected beam angle or effective time due to incorrect parameters.

[0216] It is understood that the at least one item mentioned above can be sent together with the functional relationship, or can be sent separately, without limitation. Alternatively, the at least one item mentioned above can be pre-configured or pre-defined in the RIS locally, without needing to be sent, to reduce overhead.

[0217] Optionally, in combination with the above method, after S303, the method may further include: the access network device sending a first signal to the RIS, and the RIS receiving the first signal accordingly.

[0218] The first signal may be a special WUS. For example, the WUS used to wake up the RIS includes WUSs numbered 0 to N-1, where N is an integer greater than 1. The special WUS may be a WUS numbered N, such as an LP-WUS, which is used to trigger the RIS to enter sleep, or adjust to a sleep state. Therefore, it may also be referred to as a sleep signal, such as a low-power go-to-sleep signal (LP-GTS), or any other possible name, without limitation. The first signal may correspond to indication information, which may be used to instruct the RIS to adjust to a sleep state, thereby enabling timely triggering of the RIS to enter a sleep state when it is no longer needed, thereby reducing the power consumption of the RIS.

[0219] The access network device may send a first signal to the RIS within the first effective time. For example, before the first effective time expires, the access network device may determine that the RIS is no longer needed to assist in enhancing the communication quality between the access network device and the terminal due to reasons such as the termination of data transmission between the access network device and the terminal, thereby determining that the RIS can enter sleep mode in advance and sending the first signal to the RIS. Accordingly, the RIS may receive the first signal within the first effective time. For example, the RIS may perform reception detection on the first signal within the first effective time, thereby receiving the first signal. The RIS may pre-configure a correspondence between the first signal and indication information. The RIS may determine the corresponding indication information based on the received first signal, and thus, in response to the indication information, interrupt the reflection in advance and enter a sleep state before the first effective time expires, such as powering off the FWD end of the RIS, or shutting down the FWD end, to further reduce power consumption.

[0220] It can be understood that RIS can only perform reception detection for the first signal within the first effective time (such as only detecting whether the WUS with sequence number N is received), and will not perform reception detection for the first signal at other times except the first effective time. This not only avoids communication redundancy, but also reduces the power consumption of RIS.

[0221] Optionally, before the access network device sends the first signal to the RIS, the access network device may also send the correspondence between the first signal and the indication information to the RIS. Correspondingly, the RIS may also receive the correspondence between the first signal and the indication information to ensure that the RIS can correctly enter sleep after receiving the first signal without performing other erroneous operations.

[0222] It is understood that the correspondence between the first signal and the indication information can be sent together with the above configuration information, or can also be sent separately, without limitation. Of course, the correspondence can also be pre-configured or pre-defined in the RIS locally by protocol, without having to be sent, to reduce overhead.

[0223] For ease of understanding, the following uses a scenario to provide an overall introduction to the process of the above method.

[0224] As shown in Figure 4, N LP-WUSs, numbered 0 to N-1, are used to wake up the RIS. These N LP-WUSs correspond one-to-one with N pieces of configuration information, or satisfy a functional relationship. The LP-WUS with sequence number N (i.e., the N+1th LP-WUS, which can also be a non-consecutive sequence number, not N, but N+X, where X is a positive integer) is used to trigger the RIS to enter sleep mode, which is the first signal mentioned above.

[0225] Step 1: The access network device may send a correspondence / functional relationship between N LP-WUSs and N configuration information to the RIS. Each configuration information includes the angle of the RIS's reflected beam and the effective time. Optionally, the access network device may also send information indicating the above duration to the RIS.

[0226] Step 2: The access network device may send the i-th LP-WUS among N LP-WUSs to the RIS within the duration, where i is any integer from 0 to N-1. Optionally, the access network device starts a timer according to the effective time, which is recorded as the effective time timer.

[0227] Step 3: The MT of the RIS performs receive detection on N LP-WUSs within the duration, thereby receiving the i-th LP-WUS. Based on the correspondence or functional relationship configured in step 1, the RIS determines the angle and effective time of the reflected beam corresponding to the i-th LP-WUS. The FWD of the RIS starts and enters the active state to enable the angle and effective time of the reflected beam corresponding to the i-th LP-WUS. If the beam is reflected according to the reflected beam angle, a timer is started according to the effective time, which is recorded as the effective time timer.

[0228] Optionally, when the MT end of the RIS performs reception detection on N LP-WUSs within the duration, it does not perform reception detection on the (N+1)th LP-WUS.

[0229] Step 4: The access network device sends information indicating a receiving beam to the terminal. The receiving beam corresponds to the reflected beam or path of the RIS at the above angle.

[0230] Step 5: The access network device provides services to the terminal based on the above-mentioned reflected beam or path, such as uplink / downlink data transmission services.

[0231] Step 6: Before the validity timer expires, the access network device determines that the data transmission service with the terminal is terminated and sends the N+1th LP-WUS to the RIS.

[0232] Step 7: The MT side of the RIS performs a reception check on the N+1th LP-WUS within the validity timer. After detecting the N+1th LP-WUS, the FWD side of the RIS shuts down and enters the sleep state. The MT side of the RIS resumes performing reception checks on N LP-WUS.

[0233] Optionally, when the MT side of the RIS performs reception detection for the N+1th LP-WUS, the MT side of the RIS does not perform reception detection for the N+1th LP-WUS.

[0234] Step 8: When the RIS validity timer expires, the FWD side of the RIS is shut down and enters the dormant state. The MT side of the RIS resumes performing reception detection for N LP-WUSs.

[0235] It is understood that steps 6-7 are optional. If the access network device does not instruct the RIS to enter the dormant state in advance, then after step 5, steps 6-7 are skipped and step 8 is executed. Of course, if the aforementioned validity timer expires, if other validity timers have not expired, the RIS can remain in the active state until the applicable validity timer expires, the FWD end of the RIS is shut down, and the RIS enters the dormant state.

[0236] The communication method provided in the embodiment of the present application is described in detail above in conjunction with Figures 3 and 4. The communication device for executing the communication method provided in the embodiment of the present application is described in detail below in conjunction with Figures 5 and 6.

[0237] Figure 5 is a structural diagram of a communication device according to an embodiment of the present application. As shown in Figure 5 , the communication device 500 includes a transceiver module 501 and a processing module 502. For ease of illustration, Figure 5 only shows the main components of the communication device.

[0238] The transceiver module 501 is used to perform the transceiver function of the method shown in FIG. 3 , and the processing module 502 is used to perform other functions of the method shown in FIG. 3 except the transceiver function.

[0239] Optionally, the transceiver module 501 may include a sending module (not shown in FIG5 ) and a receiving module (not shown in FIG5 ). The sending module is used to implement the sending function of the communication device 500 , and the receiving module is used to implement the receiving function of the communication device 500 .

[0240] Optionally, the communication device 500 may further include a storage module (not shown in FIG5 ) storing a program or instruction. When the processing module 502 executes the program or instruction, the communication device 500 may perform the functions of the network device in the method shown in FIG3 in the above method.

[0241] It can be understood that the communication device 500 can be a terminal or a network device, or a chip (system) or other parts or components that can be set in a terminal or a network device, or a device that includes a terminal or a network device. This application does not limit this.

[0242] In addition, the technical effects of the communication device 500 can refer to the technical effects of the communication method shown in Figure 3, and will not be repeated here.

[0243] FIG6 is a second structural diagram of a communication device provided in an embodiment of the present application. For example, the communication device may be a terminal, or a chip (system) or other component or assembly that can be provided in a terminal. As shown in FIG6 , the communication device 600 may include a processor 601. Optionally, the communication device 600 may further include a memory 602 and / or a transceiver 603. The processor 601 is coupled to the memory 602 and the transceiver 603, such as by a communication bus.

[0244] The following is a detailed introduction to the various components of the communication device 600 with reference to FIG6 :

[0245] The processor 601 is the control center of the communication device 600 and can be a single processor or a collective term for multiple processing elements. For example, the processor 601 can be one or more central processing units (CPUs), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as one or more digital signal processors (DSPs) or one or more field programmable gate arrays (FPGAs).

[0246] Optionally, the processor 601 may execute various functions of the communication device 600 , such as executing the communication method shown in FIG. 3 , by running or executing a software program stored in the memory 602 and calling data stored in the memory 602 .

[0247] In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 6 .

[0248] In a specific implementation, as an embodiment, the communication device 600 may also include multiple processors, such as the processor 601 and the processor 604 shown in FIG6 . Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0249] The memory 602 is used to store the software program for executing the solution of the present application, and the execution is controlled by the processor 601. The specific implementation method can refer to the above method embodiment and will not be repeated here.

[0250] Alternatively, the memory 602 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 602 may be integrated with the processor 601 or exist independently and be coupled to the processor 601 via an interface circuit (not shown in FIG6 ) of the communication device 600. This embodiment of the present application does not specifically limit this.

[0251] Transceiver 603 is used for communication with other communication devices. For example, if communication device 600 is a terminal, transceiver 603 can be used to communicate with a network device or another terminal device. For another example, if communication device 600 is a network device, transceiver 603 can be used to communicate with a terminal or another network device.

[0252] Optionally, the transceiver 603 may include a receiver and a transmitter (not shown separately in FIG6 ), wherein the receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0253] Optionally, the transceiver 603 may be integrated with the processor 601 or exist independently and be coupled to the processor 601 through an interface circuit (not shown in FIG. 6 ) of the communication device 600 . This embodiment of the present application does not specifically limit this.

[0254] It is understandable that the structure of the communication device 600 shown in FIG6 does not constitute a limitation on the communication device, and an actual communication device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0255] In addition, the technical effects of the communication device 600 can refer to the technical effects of the methods described in the above method embodiments, and will not be repeated here.

[0256] It should be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0257] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0258] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (such as infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0259] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. A and B can be singular or plural. Furthermore, the character " / " as used herein generally indicates an "or" relationship between the associated objects, but it may also indicate an "and / or" relationship. For specific understanding, please refer to the context.

[0260] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0261] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0262] Those skilled in the art will appreciate that the units and algorithmic steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0263] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0264] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0265] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0266] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0267] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0268] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: Determine a wake-up signal WUS, wherein the WUS is used to instruct the smart metasurface RIS to adjust to an activated state, and the WUS corresponds to configuration information of the RIS in the activated state; The WUS is sent to the RIS.

2. The method according to claim 1, characterized in that: The WUS includes a first WUS, and the first WUS corresponds to the first configuration information; The configuration information includes first configuration information, where the first configuration information is used to indicate an angle of a first reflected beam and a first effective time of the RIS in an activated state, where the first effective time is a valid time of the angle of the first reflected beam.

3. The method according to claim 2, characterized in that Before sending the WUS to the RIS, the method further includes: sending a correspondence between the first WUS and the first configuration information to the RIS; or, A functional relationship between the first WUS and the first configuration information is sent to the RIS.

4. The method according to claim 3, characterized in that The functional relationship includes: The angle of the first reflected beam=reference angle+serial number of the first WUS*angle scaling factor.

5. The method according to claim 3, characterized in that: The functional relationship includes: The first effective time=reference time point+sequence number of the first WUS*time scaling factor*time unit.

6. The method according to claim 1, characterized in that: The WUS includes a first WUS and a second WUS, the configuration information includes first configuration information and second configuration information, the first WUS corresponds to the first configuration information, and the second WUS corresponds to the second configuration information; The first configuration information is used to indicate the angle of the first reflected beam of the RIS in an activated state; The second configuration information is used to indicate the first effective time, and the first effective time is the effective time of the angle of the first reflected beam.

7. The method according to claim 6, characterized in that Before sending the WUS to the RIS, the method further includes: sending the corresponding relationship between the first WUS and the first configuration information, and the corresponding relationship between the second WUS and the second configuration information to the RIS; or, A first functional relationship between the first WUS and the first configuration information, and a second functional relationship between the second WUS and the second configuration information are sent to the RIS.

8. The method according to claim 7, characterized in that The first functional relationship includes: The angle of the first reflected beam=reference angle+serial number of the first WUS*angle scaling factor.

9. The method according to claim 7, characterized in that: The second functional relationship includes: The first effective time=reference time point+sequence number of the second WUS*time scaling factor*time unit.

10. The method according to claim 4 or 8, characterized in that: The method further comprises: At least one of the following is sent to the RIS: the reference angle, or the angle scaling factor.

11. The method according to claim 5 or 9, characterized in that: The method further comprises: At least one of the following is sent to the RIS: the reference time point, the time scaling factor, or the time unit.

12. The method according to any one of claims 1 to 11, characterized in that The sending the WUS to the RIS comprises: The WUS is sent to the RIS within a duration of the RIS, wherein the duration is a time for the RIS to detect the WUS in each cycle of a sleep state.

13. The method according to claim 12, characterized in that The method further comprises: Information indicating the duration is sent to the RIS.

14. The method according to any one of claims 2 to 11, characterized in that: After sending the WUS to the RIS, the method further includes: A first signal is sent to the RIS, wherein the first signal corresponds to indication information, and the indication information is used to instruct the RIS to adjust to a dormant state.

15. The method according to claim 14, characterized in that The sending a first signal to the RIS comprises: Within the first validity period, the first signal is sent to the RIS.

16. The method according to claim 14 or 15, characterized in that Before sending the first signal to the RIS, the method further includes: Sending a correspondence between the first signal and the indication information to the RIS.

17. The method according to any one of claims 1 to 16, characterized in that The WUS is a low power sleep signal LP-WUS.

18. A communication method, characterized in that: include: Receiving a wake-up signal WUS, wherein the WUS is used to instruct the smart metasurface RIS to adjust to an activated state, and the WUS corresponds to configuration information of the RIS in the activated state; According to the WUS, it is adjusted to the activated state.

19. The method according to claim 18, characterized in that: The WUS includes a first WUS, and the first WUS corresponds to the first configuration information; The configuration information includes first configuration information, where the first configuration information is used to indicate an angle of a first reflected beam and a first effective time of the RIS in an activated state, where the first effective time is a valid time of the angle of the first reflected beam.

20. The method according to claim 19, characterized in that Before receiving the WUS, the method further includes: receiving a correspondence between the first WUS and the first configuration information; or, Receive a functional relationship between the first WUS and the first configuration information.

21. The method according to claim 20, characterized in that The functional relationship includes: The angle of the first reflected beam=reference angle+serial number of the first WUS*angle scaling factor.

22. The method according to claim 20, characterized in that The functional relationship includes: The first effective time=reference time point+sequence number of the first WUS*time scaling factor*time unit.

23. The method according to claim 18, characterized in that: The WUS includes a first WUS and a second WUS, the configuration information includes first configuration information and second configuration information, the first WUS corresponds to the first configuration information, and the second WUS corresponds to the second configuration information; The first configuration information is used to indicate the angle of the first reflected beam of the RIS in an activated state; The second configuration information is used to indicate the first effective time, and the first effective time is the effective time of the angle of the first reflected beam.

24. The method according to claim 23, characterized in that Before receiving the WUS, the method further includes: receiving a correspondence between the first WUS and the first configuration information, and a correspondence between the second WUS and the second configuration information; or, A first functional relationship between the first WUS and the first configuration information, and a second functional relationship between the second WUS and the second configuration information are received.

25. The method according to claim 24, characterized in that The first functional relationship includes: The angle of the first reflected beam=reference angle+serial number of the first WUS*angle scaling factor.

26. The method according to claim 24, characterized in that The second functional relationship includes: The first effective time=reference time point+sequence number of the second WUS*time scaling factor*time unit.

27. The method according to claim 21 or 25, characterized in that The method further comprises: At least one of the following is received: the reference angle, or the angle scaling factor.

28. The method according to claim 22 or 26, characterized in that The method further comprises: At least one of the following is received: the reference time point, the time scaling factor, or the time unit.

29. The method according to any one of claims 18 to 28, characterized in that The receiving of WUS comprises: The WUS is received within a duration of the RIS, wherein the duration is a time for the RIS to detect the WUS in each cycle of a sleep state.

30. The method according to claim 29, characterized in that The method further comprises: Information indicating the duration is received.

31. The method according to any one of claims 19 to 28, characterized in that After receiving the WUS, the method further includes: A first signal is received, where the first signal corresponds to indication information, and the indication information is used to instruct the RIS to adjust to a dormant state.

32. The method according to claim 31, characterized in that The receiving a first signal comprises: Within the first effective time, the first signal is received.

33. The method according to claim 31 or 32, characterized in that Before receiving the first signal, the method further includes: Receive a correspondence between the first signal and the indication information.

34. The method according to any one of claims 18 to 33, characterized in that The WUS is a low power sleep signal LP-WUS.

35. A communication device, characterized in that: The apparatus comprises: a module for performing the method as claimed in any one of claims 1-34.

36. A communication device, characterized in that: The communication device comprises: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method according to any one of claims 1-34.

37. A chip, characterized in that: The chip comprises: a controller and an interface circuit, wherein the controller is used to interact with other devices through the interface circuit to execute the method as described in any one of claims 1-34.

38. A communication system, characterized in that: The communication system comprises a first device and a second device; the first device is used to execute the method according to any one of claims 1-17, and the second device is used to execute the method according to any one of claims 18-34.

39. A computer-readable storage medium, characterized in that: The computer-readable storage medium comprises a computer program or instructions, and when the computer program or instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 34.

40. A computer program product, characterized in that The method comprises a computer program or an instruction, which, when executed on a computer, causes the computer to execute the method according to any one of claims 1 to 34.

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