Communication method and device

Abstract

The invention provides a communication method and device, and belongs to the technical field of communication. The method comprises the following steps: determining a wakeup signal WUS, and sending the WUS to the RIS. Wherein the WUS is used for indicating the intelligent metasurface RIS to be adjusted to an activated state, and the WUS corresponds to the configuration information of the RIS in the activated state. Therefore, since the WUS corresponds to the configuration information of the RIS in the activated state, the RIS can know what configuration information should be used in the activated state only by sending the WUS to the RIS, and the RIS does not need to be configured, so that the time delay of configuring the RIS can be reduced, and the loss of communication performance is avoided.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a communication method and device. Background Art

[0002] Currently, the industry is discussing the introduction of a reconfigurable intelligent surface (RIS). In order to achieve network reconfiguration of RIS, the network needs to send control signaling to RIS, such as configuring the reflection coefficient or beam direction. At the same time, in order to reduce the power consumption of RIS, when the network does not need to use RIS, the network can put RIS into a dormant state and continuously detect a wake-up signal (WUS) to wake up RIS on demand. Therefore, based on the existing technical solutions, the network can use a dedicated low-power wake-up signal (LP-WUS) and a low-power wake-up signal receiver (LP-WUR) to wake up RIS first and then configure RIS.

[0003] However, the configuration delay of dedicated LP-WUS and LP-WUR is relatively large, resulting in communication performance loss. Therefore, how to reduce the configuration delay of RIS is a hot topic in current research. Summary of the invention

[0004] The embodiments of the present application provide a communication method and apparatus for reducing the delay of configuring RIS.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, a communication method is provided, the method comprising: determining a wake-up signal WUS, and sending the WUS to a RIS, 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.

[0007] It can be seen 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. Therefore, the delay in configuring RIS can be reduced and communication performance loss can be avoided.

[0008] It is understood that the method described in the first aspect can be executed by a network device, such as an access network device, a device including a network device, or a chip in a network device, without limitation. For ease of description, the following description takes the method executed by an access network device as an example.

[0009] In a 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 is used to indicate the angle of the first reflected beam and the first effective time of the RIS in the activated state, and the first effective time is the effective time of the angle of the first reflected beam.

[0010] 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.

[0011] It can also be understood that the angle of the first reflected beam can also 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 a transmission angle, a transmission coefficient, a reflection angle and a transmission angle, a reflection coefficient and a transmission coefficient (applicable to a new RIS that supports both reflection and transmission), etc., without limitation. For ease of understanding, the embodiments of the present application are introduced by taking the effective time and the angle of the reflected beam as examples.

[0012] Optionally, before sending the WUS to the RIS, the method described in the first aspect may further include: sending a correspondence relationship between the first WUS and the first configuration information to the RIS, so that when the RIS receives the first WUS, it can determine the corresponding first configuration information according to the correspondence relationship. Alternatively, sending a functional relationship between the first WUS and the first configuration information to the RIS, so that when the RIS receives the first WUS, it can calculate the first configuration information according to the functional relationship.

[0013] 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.

[0014] Optionally, the functional relationship may include:

[0015] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0016] It can be understood that the above functional relationship is not only applicable to the angle between the first WUS signal and the first reflected beam, but also applicable to the angles between other WUS signals and other reflected beams. That is, for any WUS that can be applied to the functional relationship, RIS can calculate the corresponding reflected beam angle through the functional relationship.

[0017] Optionally, the functional relationship may include:

[0018] First effective time = reference time point + sequence number of the first WUS * time scaling factor * time unit.

[0019] It can also be understood that the above functional relationship is not only applicable to the angle between the first WUS signal and the first effective time, but also applicable to other WUS signals and other effective times. That is, for any WUS that can be applied to the functional relationship, RIS can calculate the corresponding effective time through the functional relationship.

[0020] In a 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 is used to indicate the angle of the first reflected beam when the RIS is activated; 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. That is, the angle of the reflected beam and the effective time can be indicated (or configured) by different WUSs respectively to achieve decoupling of the configuration, and the configuration of different parameters can be more flexible.

[0021] Optionally, before sending the WUS to the RIS, the method described in the first aspect may further include: 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, so that when the RIS receives the first WUS and the second WUS, it can determine the corresponding first configuration information and the second configuration information according to the corresponding relationship. Alternatively, sending 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, so that when the RIS receives the first WUS and the second WUS, it can calculate the corresponding first configuration information and the second configuration information according to the functional relationship.

[0022] 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.

[0023] Optionally, the first functional relationship may include:

[0024] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0025] It can be understood that the first functional relationship is not only applicable to the angle between the first WUS signal and the first reflected beam, but also applicable to the angles between other WUS signals and other reflected beams. That is, for any WUS applicable to the first functional relationship, RIS can calculate the corresponding reflected beam angle through the first functional relationship.

[0026] Optionally, the second functional relationship may include:

[0027] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0028] It can be understood that the second functional relationship is not only applicable to the angle between the first WUS signal and the first reflected beam, but also applicable to the angles between other WUS signals and other reflected beams. That is, for any WUS applicable to the second functional relationship, RIS can calculate the corresponding reflected beam angle through the second functional relationship.

[0029] 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 angle of the reflected beam according to the parameters configured by the network, so as to avoid the RIS from using wrong parameters and causing an error in calculating the angle of the reflected beam. Of course, at least one of the reference angle or the angle scaling factor may also be preconfigured or predefined by protocol in the RIS locally, without the need to send it, so as to reduce overhead.

[0030] 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 the parameters configured by the network, so as to avoid the RIS from calculating the effective time incorrectly due to using incorrect parameters. Of course, at least one of the reference time point, the time scaling factor, or the time unit may also be pre-configured or pre-defined by the protocol locally in the RIS, and does not need to be sent, so as to reduce overhead.

[0031] In a possible design, sending a WUS to a RIS includes sending a WUS to the RIS during a duration of the RIS, wherein the duration is the time used by the RIS to detect the WUS in each cycle of a sleep state, so as to avoid communication redundancy caused by sending the WUS during a non-duration period.

[0032] Optionally, the method of the first aspect may further include: sending information indicating duration to the RIS to achieve alignment of transmission and reception.

[0033] In a possible design, after sending the WUS to the RIS, the method described in the first aspect may further include: sending a first signal to the RIS, wherein the first signal corresponds to the indication information, and the indication information is used to instruct the RIS to adjust to a dormant state, so as to timely trigger the RIS to enter a dormant state when the RIS is not needed to work, so as to reduce the power consumption of the RIS.

[0034] Optionally, sending the first signal to the RIS includes: sending the first signal to the RIS within the first effective time. Accordingly, the RIS may perform reception detection for the first signal only within the first effective time, and not perform reception detection for the first signal at other times except the first effective time, so that communication redundancy can be avoided and power consumption of the RIS can be reduced.

[0035] 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.

[0036] 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.

[0037] In a second aspect, a communication method is provided, the method comprising: receiving a wake-up signal WUS, and adjusting to an activated state according to the WUS. 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.

[0038] 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 in a network device, without limitation. For ease of description, the following description takes the method executed by a RIS as an example.

[0039] In a 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 is used to indicate the angle of the first reflected beam and the first effective time of the RIS in the activated state, and the first effective time is the effective time of the angle of the first reflected beam.

[0040] Optionally, before receiving the WUS, the method described in the second aspect may further include: receiving a corresponding relationship between the first WUS and the first configuration information; or receiving a functional relationship between the first WUS and the first configuration information.

[0041] Optionally, the functional relationship includes:

[0042] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0043] Optionally, the functional relationship includes:

[0044] First effective time = reference time point + sequence number of the first WUS * time scaling factor * time unit.

[0045] In a possible design, 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 when the RIS is in an activated state; the second configuration information is used to indicate a first effective time, and the first effective time is the effective time of the angle of the first reflected beam.

[0046] Optionally, before receiving the WUS, the method described in the second aspect may also include: 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, receiving 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.

[0047] Optionally, the first functional relationship includes:

[0048] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0049] Optionally, the second functional relationship includes:

[0050] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0051] 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.

[0052] In a possible design scheme, the method described in the second aspect may also include: receiving at least one of the following: a reference time point, a time scaling factor, or a time unit.

[0053] 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.

[0054] Optionally, the method described in the second aspect may further include: receiving information for indicating duration.

[0055] Optionally, after receiving the WUS, the method described in the second aspect may further include: receiving a first signal, the first signal corresponding to indication information, and the indication information is used to instruct the RIS to adjust to a dormant state.

[0056] In one possible design scheme, receiving a first signal includes: receiving the first signal within a first effective time.

[0057] Optionally, before receiving the first signal, the method described in the second aspect may further include: receiving a correspondence between the first signal and the indication information.

[0058] In a possible design scheme, WUS is a low power sleep signal LP-WUS.

[0059] It can be understood that the relevant technical effects of the method described in the above second aspect can also refer to the relevant introduction of the above first aspect, and will not be repeated here.

[0060] In a third aspect, a communication device is provided. The communication device includes: a module for executing the method described in any one of the first aspect to the second aspect, such as a transceiver module and a processing module. For example, the transceiver module is used to indicate the transceiver function of the communication device, and the processing module is used to execute functions of the communication device other than the transceiver function.

[0061] 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.

[0062] 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.

[0063] In a 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 is used to indicate the angle of the first reflected beam and the first effective time of the RIS in the activated state, and the first effective time is the effective time of the angle of the first reflected beam.

[0064] Optionally, the transceiver module is used 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.

[0065] Optionally, the functional relationship may include:

[0066] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0067] Optionally, the functional relationship may include:

[0068] First effective time = reference time point + sequence number of the first WUS * time scaling factor * time unit.

[0069] In a possible design, 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 when the RIS is in an activated state; the second configuration information is used to indicate a first effective time, and the first effective time is the effective time of the angle of the first reflected beam.

[0070] 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.

[0071] Optionally, the first functional relationship may include:

[0072] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

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

[0074] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0075] Optionally, the transceiver module is used to send at least one of the following to the RIS: a reference angle, or an angle scaling factor.

[0076] Optionally, the transceiver module is used to send at least one of the following to the RIS: a reference time point, a time scaling factor, or a time unit.

[0077] In a possible design, the transceiver module is used to send the WUS to the RIS within the duration of the RIS, wherein the duration is the time for the RIS to detect the WUS in each cycle of the sleep state.

[0078] Optionally, the transceiver module is used to send information indicating the duration to the RIS.

[0079] In a possible design, the transceiver module is used to send a first signal to the RIS after sending the WUS to the RIS, wherein the first signal corresponds to the indication information, and the indication information is used to instruct the RIS to adjust to the dormant state.

[0080] Optionally, the transceiver module is used to send a first signal to the RIS within a first effective time.

[0081] 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.

[0082] In a possible design scheme, WUS is a low power sleep signal LP-WUS.

[0083] 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.

[0084] The transceiver module is used to receive a wake-up signal WUS. The processing module is used to adjust to an activated state according to the WUS. The WUS is used to instruct the intelligent metasurface RIS to adjust to an activated state, and the WUS corresponds to the configuration information of the RIS in the activated state.

[0085] In a 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 is used to indicate the angle of the first reflected beam and the first effective time of the RIS in the activated state, and the first effective time is the effective time of the angle of the first reflected beam.

[0086] Optionally, the transceiver module is used to receive a correspondence relationship 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.

[0087] Optionally, the functional relationship includes:

[0088] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0089] Optionally, the functional relationship includes:

[0090] First effective time = reference time point + sequence number of the first WUS * time scaling factor * time unit.

[0091] In a possible design, 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 when the RIS is in an activated state; the second configuration information is used to indicate a first effective time, and the first effective time is the effective time of the angle of the first reflected beam.

[0092] 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.

[0093] Optionally, the first functional relationship includes:

[0094] The angle of the first reflected beam = reference angle + the sequence number of the first WUS * angle scaling factor.

[0095] Optionally, the second functional relationship includes:

[0096] First effective time = reference time point + sequence number of the second WUS * time scaling factor * time unit.

[0097] In one possible design, the transceiver module is used to receive at least one of the following: a reference angle or an angle scaling factor.

[0098] In one possible design scheme, the transceiver module is used to receive at least one of the following: a reference time point, a time scaling factor, or a time unit.

[0099] In a possible design, the transceiver module is used to receive the WUS within the duration of the RIS, wherein the duration is the time used by the RIS to detect the WUS in each cycle of the sleep state.

[0100] Optionally, the transceiver module is used to receive information indicating duration.

[0101] Optionally, the transceiver module is used to receive a first signal after receiving the WUS, wherein the first signal corresponds to the indication information, and the indication information is used to instruct the RIS to adjust to the dormant state.

[0102] In one possible design scheme, the transceiver module is used to receive a first signal within a first effective time.

[0103] Optionally, the transceiver module is used to receive a correspondence between the first signal and the indication information before receiving the first signal.

[0104] In a possible design scheme, WUS is a low power sleep signal LP-WUS.

[0105] 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.

[0106] 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.

[0107] 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, and this application does not limit this.

[0108] 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.

[0109] According to a fourth aspect, a communication device is provided, wherein the communication device comprises: a processor, wherein the processor is configured to execute the method described in any one of the first aspect to the second aspect.

[0110] In a 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.

[0111] In a possible design scheme, the communication device described in the fourth aspect may further include a memory. The memory may be integrated with the processor or may be separately provided. The memory may be used to store the computer program and / or data involved in the method described in any one of the first aspect to the second aspect.

[0112] In an embodiment of the present application, the communication device described in the fourth aspect may 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 may be arranged in the network device, or a device including the network device.

[0113] 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.

[0114] In a fifth aspect, a communication device is provided, comprising: a processor, the processor being coupled to a memory, the processor being configured to execute a computer program stored in the memory, so that the communication device executes the method described in any one of the first aspect to the second aspect.

[0115] In a 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.

[0116] In an embodiment of the present application, the communication device described in the fifth aspect may 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 may be arranged in the network device, or a device including the network device.

[0117] 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.

[0118] 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 aspect to the second aspect.

[0119] In a possible design scheme, 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.

[0120] In an embodiment of the present application, the communication device described in the sixth aspect may 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 may be arranged in the network device, or a device including the network device.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] In a ninth aspect, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are executed on a computer, the computer executes the method described in any one of the first to second aspects.

[0125] 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 described in any one of the first to second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0126] Figure 1 This is a schematic diagram of NCR's architecture;

[0127] Figure 2 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0128] Figure 3 A flow chart of a communication method provided in an embodiment of the present application;

[0129] Figure 4 A schematic diagram of an application scenario of the communication method provided in an embodiment of the present application;

[0130] Figure 5 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 1 ;

[0131] Figure 6 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0132] 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, worldwide 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, sixth generation (6G) mobile communication systems, etc.

[0133] For ease of understanding, the technical terms involved in the embodiments of the present application are first introduced below.

[0134] 1. Network-controlled repeater (NCR):

[0135] NCR can improve the coverage of wireless signals by receiving, amplifying and forwarding wireless signals. NCR includes a mobile termination (MT) module for receiving control signals from a base station. NCR also includes a forward (Fwd) module for receiving, amplifying and forwarding wireless signals. NCR receives downlink control information (DCI) from the network. NCR usually includes a power amplifier module, which has a high power consumption cost.

[0136] NCR can be applied to communication scenarios with higher spectrum resources to improve the coverage of wireless signals. For example, in order to meet the growing communication needs, wireless communication systems are introducing higher frequency spectrum resources, such as millimeter wave and terahertz bands. In higher frequency bands, the path loss experienced by wireless signals is large, which affects the coverage distance. Therefore, the NCR solution can be adopted as follows Figure 1 As shown, the MT end of the NCR can be responsible for detecting the DCI sent by the network, which contains the indication information of the network (such as beam number, beam direction, etc.). The Fwd segment of the NCR can be responsible for receiving, amplifying and forwarding wireless signals to help improve the coverage of wireless signals.

[0137] 2. Low-power wake-up signal (LP-WUS) and low-power wake-up receiver (LP-WUR):

[0138] In order to reduce power consumption and extend battery life, the receiver is usually put into sleep state, and then the wake-up signal (WUS) is periodically detected to enter the active state. RIS usually does not work in sleep state, that is, the signal reflection function is not performed 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 channel estimation and decoding are required to detect DCI, the overall process is relatively complicated, and the power consumption and complexity are relatively high.

[0139] The industry is currently discussing the introduction of dedicated LP-WUS and LP-WUR. Potential LP-WUS modulation methods include on-off keying (OOK), frequency-shift keying (FSK), amplitude-shift keying (ASK), etc. Potential LP-WUR includes receivers based on RF envelope detection. The process of RF envelope detection of LP-WUS is simpler than receiving DCI, so it can reduce the power consumption of sleep state detection WUS and extend the battery life of the device.

[0140] 3. Reconfigurable intelligent surface (RIS):

[0141] The industry is currently discussing the introduction of RIS. By introducing RIS nodes, the reflection of wireless signals can be increased and the angle and strength of reflected signals can be controlled. This can improve the coverage of wireless signals at a lower power consumption cost. The introduction of reflections can also increase the number of multipaths in wireless channels, thereby improving the system capacity of multiple-input multi-output (MIMO).

[0142] It is understandable that RIS is also called intelligent reflecting surface (IRS).

[0143] In order to realize the network reconfiguration of RIS, the network needs to send control signaling to RIS, such as configuring the reflection coefficient or beam direction. At the same time, in order to reduce the power consumption of RIS, when the network does not need to use RIS, the network can put RIS into a dormant state and continuously detect WUS to wake up RIS on demand. Therefore, based on the existing technical solutions, the network can send a DCI-based WUS to wake up RIS, or use a dedicated LP-WUS and LP-WUR to wake up RIS first, and then configure the reflection coefficient or beam direction of RIS through DCI.

[0144] However, if the DCI-based WUS is used, the MT end of the RIS will still have high power consumption and complexity due to blind detection of DCI, which is contrary to the low power consumption goal of RIS. If the dedicated LP-WUS and LP-WUR are used, since the amount of information that LP-WUS can carry is limited, it only supports RIS wake-up. The network needs to wake up RIS before configuring the reflection coefficient or beam direction of RIS. The delay of beam update is large, resulting in communication performance loss.

[0145] In response to the above technical problems, the embodiments of the present application propose the following technical solutions.

[0146] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0147] 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, etc. 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 also be realized by means of the arrangement order of each information agreed in advance (such as specified by 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 uniformly indicated to reduce the indication overhead caused by indicating the same information separately.

[0148] In addition, the specific indication method may 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 refer 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, different indication methods may be used for different information. In the specific implementation process, the desired 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.

[0149] 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 embodiment of the present application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the sending end device by sending configuration information to the receiving end device.

[0150] "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, which is not limited by the embodiments of the present application.

[0151] 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, and the embodiments of the present application do not make specific limitations on this.

[0152] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to have a judgment action when implementing it, nor does it mean that there are other limitations.

[0153] 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 is 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 is YY, which can include direct receiving from YY through the air interface, and can also include 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 performed between devices, for example, between network devices and terminal devices, between network devices and network devices, and between terminal devices and terminal devices, or can be performed within a device, for example, sending or receiving between components, modules, chips, software modules, or hardware modules within the device through a bus, a wiring, or an interface.

[0154] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after 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, where 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 its similar expression refers to any combination of these items, including any combination of single items 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, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will appreciate 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 the difference. 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 designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0155] 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. A person of ordinary skill in the art can appreciate that with the evolution of the 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.

[0156] To facilitate understanding of the embodiments of the present application, first Figure 2 The communication system shown in the example is used to describe in detail the communication system applicable to the embodiment of the present application. Figure 2 A schematic diagram of the architecture of a communication system applicable to the communication method provided in an embodiment of the present application.

[0157] like Figure 2 As shown, the communication system mainly includes: a first device and a second device.

[0158] The first device may be a network device, specifically a radio access network device (RAN), also known 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, or in the next-generation mobile communication system, the access network device may also have other naming methods, all of which are covered within the protection scope of the embodiments of the present application, and the present application does not make any limitation on this. 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 (including multiple antenna panels) antenna panels of a base station in 5G, or it may also be a network node constituting a gNB, a transmission point (transmission and reception point, TRP / transmission point, TP) or a transmission measurement function (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 called small stations), relay stations, access points, wearable devices, vehicle-mounted devices, etc.

[0159] Among them, CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). 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, or a DU node, or a device including a CU node and a DU node. In addition, CU can be divided into a network device in the access network RAN, and CU can also be divided into a network device in the core network CN, which is not limited here.

[0160] 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, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0161] The embodiments of the present application do not limit the device form of the access network device. The device for implementing the function of the access network device may be the access network device; or it may be a device that can support the access network device to implement the function, such as a chip system. The device may be installed in the access network device, or used in conjunction with the access network device. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.

[0162] The second device may also be a network device, such as RIS, which is mainly used to reflect the signal of the terminal or access network device in a specified direction. For example, RIS may include multiple units, each of which may be used to reflect the signal of the terminal or access network device in a specified direction. The working mode of RIS is full-duplex mode. The access network device can use this feature of RIS to actively control the quality of the wireless channel between the access network device and the terminal (such as enhancing link gain, increasing the number of characteristic subchannels, etc.), thereby improving the performance of the system, such as spectrum efficiency (SE) or energy efficiency (EE), etc.

[0163] The embodiments of the present application do not limit the device form of RIS. For example, the device used to implement the function of RIS can be RIS; it can also be a device that can support RIS to implement the function, such as a chip system. The device can be installed in RIS, or used in conjunction with RIS. In the embodiments of the present application, the chip system can be composed of chips, or it can include chips and other discrete devices. Or RIS can also be replaced by a network-controlled repeater (NCR).

[0164] In the communication system, RIS can pre-configure the correspondence / functional relationship between different WUS and different configuration information used by RIS in the activated state. For example, 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, etc. Therefore, the correspondence / functional relationship between different WUS and different angles of the reflected beam and the effective time can be configured, or the correspondence / functional relationship between different WUS and different angles of the reflected beam and different WUS and different effective time can be configured. In this way, by sending WUS to RIS by the access network device, RIS can know what configuration information should be used in the activated state, and there is no need to configure RIS again, so the delay of configuring RIS can be reduced and the loss of communication performance can be avoided.

[0165] The following will be combined 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 are specifically introduced below.

[0166] Figure 3 The present invention provides a flow chart of a communication method according to an embodiment of the present invention. The communication method is applicable to the above communication system, and mainly involves the interaction between the access network device and the RIS.

[0167] like Figure 3 As shown, the process of the communication method is as follows:

[0168] S301, the access network device determines the WUS.

[0169] WUS can be used to wake up RIS, or instruct RIS to adjust to an active state, such as adjusting from a dormant state to an active state. WUS can be LP-WUS to further reduce the power consumption of waking up RIS, so as to achieve both waking up RIS with low power consumption and reducing the latency of configuring RIS, or it can be other types of WUS, or it can be a newly defined WUS in the future.

[0170] Case 1:

[0171] WUS may correspond to the configuration information of RIS in the activated state, or have a corresponding relationship. For example, different WUS may correspond to different configuration information of RIS in the activated state, which may indicate that if RIS is awakened by a certain WUS, RIS needs to apply the configuration information corresponding to the WUS in the activated state. For example, different WUS may be considered as a WUS set, and different configuration information may also be considered as a configuration information set. The corresponding relationship may be considered as a one-to-one correspondence between the WUS in the WUS set and the configuration information in the configuration information set. In addition, in the corresponding relationship, WUS may be a sequence of WUS, such as a serial number, or may be replaced by any other possible naming, such as the WUS signal itself, the WUS serial number, the WUS pattern, the WUS logo, etc., without limitation.

[0172] The configuration information can be used to configure the function of the RIS in the activated state, such as indicating at least one of the following parameters: the angle of the reflected beam, the effective time, the transmission angle, etc. Among them, the angle of the reflected beam can be used to indicate that the RIS needs to reflect the beam / signal along this angle in the activated state. The angle can be the angle difference with the normal transmission direction of the antenna panel of the RIS, or it can also be an angle based on the global coordinate system. The angle of the reflected beam can also be replaced by any other possible expression, such as a reflection coefficient, which can determine the angle of the reflected beam of the RIS. The effective time can be used to indicate the time during which the corresponding reflected beam angle is valid and invalid at other times, such as one or more periodic time periods, or one or more non-periodic time periods, which can be specifically in units of frames, radio frames, subframes, slots, or symbols. The transmission angle can be used to indicate the departure angle of the transmission signal of the RIS. Therefore, different configuration information may indicate different reflected beam angles, different effective times, different transmission angles, etc. 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.

[0173] For example, taking the example that the WUS includes the first WUS and the configuration information includes 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 a 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 embodiments of the present application are introduced by taking 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.

[0174] 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, the configuration information can also include other configuration information besides the first configuration information, and other WUS can also correspond to other configuration information. For example, there is a 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.

[0175] For easier understanding, an example is given below.

[0176] Example 1:

[0177] Taking LP-WUS as an example, an example of corresponding different LP-WUS to different configuration information may be shown in Table 1 below.

[0178] Table 1

[0179] Sequence of LP-WUS Angle of reflected beam Effective time Sequence 0 (-10,10)° 1 time slot Sequence 1 (10,10)° 10 time slots Sequence 2 (-20,20)° 2 time slots Sequence 3 (20,20)° 20 time slots … … …

[0180] As shown in Table 1, there is a corresponding relationship between sequence 0 and the angle of the reflected beam (-10, 10)° and the effective time of 1 time slot, indicating that when the RIS is awakened by the LP-WUS with sequence number 0, the RIS needs to use the angle of (-10, 10)° to reflect the beam in the next time slot. The angle of (-10, 10)° can be the angle difference with the normal transmission direction of the antenna panel of the RIS, or it can also be the angle based on the global coordinate system. Similarly, there is a corresponding relationship between sequence 1 and the angle of the reflected beam (10, 10)° and the effective time of 10 time slots, indicating that when the RIS is awakened by the LP-WUS with sequence number 1, the RIS needs to use the angle of (10, 10)° to reflect the beam in the next 10 time slots. The angle of (10, 10)° can also be the angle difference with the normal transmission direction of the antenna panel of the RIS, or it can also be the angle based on the global coordinate system, and so on. That is to say, different LP-WUS may correspond to the same type of parameters, such as the angle and effective time of the reflected beam, but different LP-WUS may correspond to different values ​​of the parameters.

[0181] For another example, taking the case where the WUS includes a first WUS and a second WUS, and the configuration information includes 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 of the RIS in the activated state (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.

[0182] 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 or the effective time indicated by other configuration information. The details can also be understood by referring to the above introduction, which will not be repeated here.

[0183] For easier understanding, an example is given below.

[0184] Example 2:

[0185] Taking LP-WUS as an example, an example of corresponding different LP-WUS to different configuration information may be shown in Table 2 and Table 3 below.

[0186] Table 2

[0187] Sequence of LP-WUS Angle of reflected beam Sequence 0 (-10,10)° Sequence 1 (10,10)° Sequence 2 (-20,20)° Sequence 3 (20,20)° … …

[0188] Table 3

[0189] Sequence of LP-WUS Effective time Sequence 4 1 time slot Sequence 5 10 time slots Sequence 6 2 time slots Sequence 7 20 time slots … …

[0190] As shown in Table 2, there is a corresponding relationship between sequence 0 and the angle of the reflected beam of (-10, 10)°, which means that when the RIS is awakened by the LP-WUS with the sequence number of sequence 0, the RIS needs to use the angle of (-10, 10)° to reflect the beam. Similarly, there is a corresponding relationship between sequence 1 and the angle of the reflected beam of (10, 10)°, which means that when the RIS is awakened by the LP-WUS with the sequence number of sequence 1, the RIS needs to use the angle of (10, 10)° to reflect the beam, and so on, which will not be repeated here.

[0191] As shown in representation 3, there is a corresponding relationship between sequence 4 and the effective time of 1 time slot, which means that when RIS receives LP-WUS with sequence number 4, RIS needs to use the angle reflection beam corresponding to the LP-WUS that wakes 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, which means that when RIS receives LP-WUS with sequence number 5, RIS needs to use the angle reflection beam corresponding to the LP-WUS that wakes up the RIS in the next 10 time slots, and so on, which will not be repeated here.

[0192] 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 the other 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 the 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.

[0193] Case 2:

[0194] The WUS may also have a functional relationship with the configuration information of the RIS in the activated state. For example, different WUSs, such as any WUS applicable to the functional relationship, may calculate different configuration information through the functional relationship, or different configuration information, such as any configuration information applicable to the functional relationship, may also calculate different WUSs through the functional relationship, to indicate that if the RIS is awakened by a certain WUS, the RIS needs to apply the configuration information corresponding to the WUS in the activated state.

[0195] 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.

[0196] It is understandable that in the above functional relationship, the WUS serial number can also be replaced by any other possible name, such as the WUS signal itself, the WUS sequence, the WUS pattern, the WUS logo, etc., and there is no limitation on this. In addition, the functional relationship can also be configured in the form of a table / table item to determine the corresponding configuration information by traversing the table / table item.

[0197] For example, taking the case where the WUS includes the above-mentioned first WUS, and the configuration information includes the above-mentioned first configuration information as an example, the above-mentioned functional relationship represents the functional relationship between the first WUS and the first configuration information, such as the angle of the first reflected beam = reference angle + serial number of the first WUS * angle scaling factor, and the first effective time = reference time point + serial number of the first WUS * time scaling factor * time unit. In addition, the first WUS can also be replaced by other WUS, that is, different WUS can calculate the same type of parameters, such as the angle of the reflected beam and the effective time, through the functional relationship, but different WUSs have different values ​​of the parameters calculated through the functional relationship.

[0198] 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 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. 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 WUS can obtain different types of parameters through functional relationship calculations, and different WUSs also have different values ​​of parameters calculated through functional relationships.

[0199] 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 can determine 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 RIS uses, such as the angle of the reflected beam, the effective time, etc., according to the location of the terminal or beam measurement, so that the reflected beam of RIS can point to the location of the terminal more accurately within the time when the terminal has a communication demand. 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.

[0200] S302: The access network device sends a WUS to the RIS, and the RIS receives the WUS accordingly.

[0201] The access network device may send a WUS to the RIS within the duration of the RIS, such as the first WUS, or the first WUS and the second WU. Correspondingly, the RIS may also receive a WUS within the duration. The duration may be the time for the RIS to detect the WUS in each cycle of the sleep state, so as to avoid communication redundancy caused by sending the WUS during the non-duration period.

[0202] Optionally, the duration may be sent in advance by the access network device to the RIS, such as by sending information indicating the duration, which may include one or more of the following: the period for detecting WUS in the sleep state, such as 40ms, the duration of each detection of WUS, such as 5ms, or a time offset, such as 10ms, which are used to jointly indicate the time for RIS to detect WUS in each period of the sleep state, such as starting to detect WUS from 15ms to 20ms in each period of 40ms, and not detecting WUS at the rest of the time. Alternatively, the duration may also be preconfigured or predefined by protocol in the RIS locally.

[0203] It is understood that for the first WUS and the second WUS, the access network device can send them 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 can also send them simultaneously within the duration, which is not limited.

[0204] S303, RIS is adjusted to an activated state according to WUS.

[0205] When the RIS is in an activated state, the FWD end of the RIS is powered on, or the FWD end is started to perform directionally reflecting the received beam.

[0206] If the access network device only sends the first WUS, the RIS may be adjusted to an activated state in response to receiving the first WUS.

[0207] 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 (such as the first WUS or the second WUS, with no limitation on the specific implementation).

[0208] If the access network device sends the first WUS and the second WUS in time division, the RIS can be triggered to continue receiving detection according to the first received WUS, and when the WUS is received again through detection, it can be triggered to adjust from the dormant state to the active state. For example, if the RIS receives the first WUS first, the RIS triggers the start timer in response to receiving the first WUS, so as to continue receiving detection within the timeout period of the timer. If the RIS detects that the second WUS is received within the timeout period of the timer, it adjusts to the active state in response to receiving the second WUS, otherwise, it continues to maintain the dormant state.

[0209] 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 predefined method. In this way, RIS can know which WUS received is the last WUS to trigger adjustment to the activated state.

[0210] RIS can also pre-configure or pre-define the same corresponding relationship as the above-mentioned access network device, such as the corresponding relationship or functional relationship between WUS and the configuration information of RIS in the activated state. The specific implementation can also refer to the above-mentioned related introduction and will not be repeated. In this way, RIS can determine the corresponding configuration information, such as the angle of the first reflected beam and the first effective time, based on the received WUS, to enable these configuration information in the activated state, so as to work according to the parameters indicated by the configuration information.

[0211] 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 only sending WUS to RIS, without the need to configure RIS again. Therefore, the delay of configuring RIS can be reduced and communication performance loss can be avoided.

[0212] Optionally, in combination with the above situation 1, before S302, the method may further include: the access network device sends the corresponding relationship between the WUS and the configuration information to the RIS. Correspondingly, the RSI receives the corresponding relationship between the WUS and the configuration information.

[0213] As described above, the correspondence between the WUS and the configuration information can be a one-to-one correspondence between the WUS in the WUS set and the configuration information in the configuration information set, such as a correspondence between the first WUS and the first configuration information, so that when the RIS receives the first WUS, it can determine the corresponding first configuration information, such as the angle of the first reflection beam and the first effective time, according to the correspondence; or, it can also include 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 when the RIS receives the first WUS and the second WUS, it can determine the corresponding first configuration information, such as the angle of the first reflection beam, and the second configuration information, such as the first effective time, according to the correspondence. Of course, the above correspondence can also be pre-configured or pre-defined by protocol in the RIS locally, without sending, to reduce overhead.

[0214] 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.

[0215] As described above, it can be known that the functional relationship can represent the functional relationship between different WUS 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 reflection beam and the first effective time, according to 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 reflection beam, according to 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, according to 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.

[0216] Optionally, the access network device may also send 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. Accordingly, the RIS may receive at least one of the above items to instruct the RIS to calculate the angle and effective time of the reflected beam according to the parameters configured by the network, so as to avoid the RIS from calculating the angle or effective time of the reflected beam incorrectly due to using incorrect parameters.

[0217] It is understandable that the at least one item mentioned above can be sent together with the functional relationship, or can also be sent separately, and there is no limitation on this. Alternatively, the at least one item mentioned above 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.

[0218] Optionally, in combination with the above method, after S303, the method may further include: the access network device sends a first signal to the RIS. Correspondingly, the RIS receives the first signal.

[0219] The first signal may be a special WUS. For example, the WUS used to wake up the RIS includes WUSs with serial numbers from 0 to N-1, where N is an integer greater than 1. The special WUS may be a WUS with serial number N, such as an LP-WUS, which is used to trigger the RIS to enter sleep, or to adjust to a sleep state, and therefore may also be referred to as a sleep signal, such as a low-power sleep signal (low-power go-to-sleep, LP-GTS), or may be replaced with any possible name, without limitation. The first signal may correspond to indication information, which may be used to indicate that the RIS is adjusted to a sleep state, so as to timely trigger the RIS to enter a sleep state when the RIS is not required to work, so as to reduce the power consumption of the RIS.

[0220] The access network device may send a first signal to the RIS within the first effective time. For example, before the first effective time times out, the access network device may determine that the RIS is not needed to assist in enhancing the communication quality between the access network device and the terminal due to reasons such as the end 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. Correspondingly, the RIS may receive the first signal within the first effective time. For example, the RIS may perform a reception detection on the first signal within the first effective time, thereby receiving the first signal. Among them, the RIS may configure the correspondence between the first signal and the indication information in advance, and the RIS may determine the corresponding indication information based on the received first signal, thereby responding to the indication information and interrupting the reflection in advance to enter the sleep state before the first effective time times out, such as powering off the FWD end of the RIS, or shutting down the FWD end, to further reduce power consumption.

[0221] It can be understood that RIS can perform reception detection for the first signal only within the first effective time (such as only detecting whether the WUS with sequence number N is received), and 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.

[0222] 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.

[0223] It is understandable 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, and there is no limitation on this. Of course, the correspondence can also be pre-configured or pre-defined by protocol in the RIS locally, and does not need to be sent to reduce overhead.

[0224] For ease of understanding, the following uses a scenario to provide an overall introduction to the process of the above method.

[0225] like Figure 4 As shown, it is set that: N LP-WUS with sequence numbers from 0 to N-1 are used to wake up the RIS, and these N LP-WUS correspond to the N configuration information one by one, or satisfy a functional relationship. The LP-WUS with sequence number N (that is, the N+1th LP-WUS, which can of course be a non-continuous sequence number, not sequence number N, but sequence number N+X, where X is a positive integer) is used to trigger the RIS to enter sleep, that is, the first signal mentioned above.

[0226] Step 1: The access network device may send the correspondence / functional relationship between N LP-WUS and N configuration information to the RIS, where each configuration information includes the angle and effective time of the reflection beam of the RIS. Optionally, the access network device may also send information indicating the above duration to the RIS.

[0227] Step 2: The access network device may send the i-th LP-WUS among N LP-WUS 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.

[0228] Step 3: The MT end of the RIS performs reception detection for N LP-WUSs within the duration, thereby receiving the i-th LP-WUS. The RIS determines the angle and effective time of the reflected beam corresponding to the i-th LP-WUS according to the corresponding relationship or functional relationship configured in step 1. The FWD end of the RIS starts and enters the activation state to enable the angle and effective time of the reflected beam corresponding to the i-th LP-WUS, such as reflecting the beam according to the angle of the reflected beam and starting the timer according to the effective time, which is recorded as the effective time timer.

[0229] Optionally, when the MT end of the RIS performs reception detection on N LP-WUSs within the duration, reception detection on the N+1th LP-WUS is not performed.

[0230] Step 4: The access network device sends information indicating a receiving beam to the terminal, where the receiving beam corresponds to the reflected beam or path of the RIS at the above angle.

[0231] 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.

[0232] 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.

[0233] Step 7: The MT end of the RIS performs reception detection for the N+1th LP-WUS within the effective time timer. After detecting the N+1th LP-WUS, the FWD end of the RIS is shut down and enters the sleep state. The MT end of the RIS resumes receiving detection for N LP-WUS.

[0234] Optionally, when the MT end of the RIS performs reception detection for the N+1th LP-WUS, the MT end of the RIS does not perform reception detection for the N+1th LP-WUS.

[0235] Step 8: When the RIS validity timer times out, the FWD end of the RIS is shut down and enters the dormant state. The MT end of the RIS resumes the reception detection for the N LP-WUSs.

[0236] It can be 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, in the case where the above-mentioned effective time timer times out, if there are other effective time timers that have not timed out, the RIS can also remain in the activated state until the effective time timer used times out, the FWD end of the RIS is closed, and it enters the dormant state.

[0237] Combination of the above Figure 3-Figure 4 The communication method provided by the embodiment of the present application is described in detail. Figure 5-Figure 6 A communication device for executing the communication method provided in an embodiment of the present application is described in detail.

[0238] Figure 5 This is a schematic diagram of the structure of the communication device provided in the embodiment of the present application. Figure 1 For example, Figure 5 As shown, the communication device 500 includes: a transceiver module 501 and a processing module 502. For ease of description, Figure 5 Only the main components of the communication device are shown.

[0239] Among them, the transceiver module 501 is used to perform the above Figure 3 The processing module 502 is used to perform the above-mentioned Figure 3 The method shown has other functions besides the sending and receiving functions.

[0240] Optionally, the transceiver module 501 may include a sending module ( Figure 5 ) and a receiving module ( Figure 5 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.

[0241] Optionally, the communication device 500 may further include a storage module ( Figure 5 When the processing module 502 executes the program or instruction, the communication device 500 can execute the above method. Figure 3 Functionality of the network device in the method shown.

[0242] 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, and this application does not limit this.

[0243] In addition, the technical effects of the communication device 500 can be referred to Figure 3 The technical effects of the communication method shown will not be repeated here.

[0244] Figure 6 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 2 For example, the communication device may be a terminal, or a chip (system) or other components or assemblies that may be provided in the terminal. Figure 6 As shown, 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 with the memory 602 and the transceiver 603, such as being connected via a communication bus.

[0245] Combine the following Figure 6 The components of the communication device 600 are described in detail:

[0246] The processor 601 is the control center of the communication device 600, and may be a processor or a general term for multiple processing elements. For example, the processor 601 is one or more central processing units (CPUs), or may be application specific integrated circuits (ASICs), or may be configured to implement one or more integrated circuits of the embodiments of the present application, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (FPGAs).

[0247] Optionally, the processor 601 may execute various functions of the communication device 600 by running or executing a software program stored in the memory 602 and calling data stored in the memory 602, such as executing the above Figure 3 The communication method shown.

[0248] In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as Figure 6 CPU0 and CPU1 are shown in FIG.

[0249] In a specific implementation, as an embodiment, the communication device 600 may also include multiple processors, such as Figure 6601 and processor 604 are shown in FIG. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0250] 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, which will not be repeated here.

[0251] Optionally, the memory 602 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices 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, optical disc storage (including compressed optical 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 the 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 may exist independently and be communicated to the processor 601 through the interface circuit ( Figure 6 (not shown) is coupled to the processor 601, which is not specifically limited in this embodiment of the present application.

[0252] The transceiver 603 is used for communication with other communication devices. For example, if the communication device 600 is a terminal, the transceiver 603 can be used to communicate with a network device, or with another terminal device. For another example, if the communication device 600 is a network device, the transceiver 603 can be used to communicate with a terminal, or with another network device.

[0253] Optionally, the transceiver 603 may include a receiver and a transmitter ( Figure 6 The receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0254] Optionally, the transceiver 603 may be integrated with the processor 601, or may exist independently and communicate with the processor 601 through the interface circuit ( Figure 6(not shown) is coupled to the processor 601, which is not specifically limited in this embodiment of the present application.

[0255] Understandably, Figure 6 The structure of the communication device 600 shown in the figure does not constitute a limitation on the communication device. The actual communication device may include more or fewer components than those shown in the figure, or combine certain components, or arrange the components differently.

[0256] 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, which will not be repeated here.

[0257] 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. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0258] 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 (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0259] 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 programs 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 devices. 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 site, computer, server or data center to another website site, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access 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 hard disk.

[0260] It should be understood that the term "and / or" in this article is only a description of the association relationship of 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, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0261] In this application, "at least one" means one or more, and "more than one" 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 be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0262] 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.

[0263] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0264] Those skilled in the art can 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.

[0265] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, 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.

[0266] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0267] 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.

[0268] 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 can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods 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.

[0269] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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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