Method, device and equipment for indicating working mode

Abstract

The present application discloses a method, apparatus and device for indicating a working mode, the method comprising: receiving first information sent by a network side device, the first information indicating a RIS working mode or a relay working mode. In an embodiment of the present application, the network side indicates the RIS working mode or the relay working mode, so that the uplink transmission and downlink reception of the same terminal are carried out through the same RIS working mode or the relay working mode, thereby solving the influence of the uplink and downlink symmetry of the RIS working mode or the relay working mode on the downlink signal reception and uplink signal transmission of the same terminal.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a method, device and equipment for indicating a working mode of a reconfigurable intelligent surface (RIS). Background Art

[0002] Smart surface devices are composed of large-scale device arrays and array control modules. Large-scale device arrays are a large number of device units that are regularly and repeatedly arranged on a flat substrate. In order to achieve a considerable signal manipulation effect, hundreds or thousands of device units are usually required to form a device array. Each device unit has a variable device structure. For example, the device unit contains a positive-intrinsic-negative (PIN) diode. The switching state of the PIN diode determines the response mode of the device unit to external wireless signals. The array control module of the smart surface can control the working state of each device unit, thereby dynamically or semi-statically controlling the response mode of each device unit to wireless signals. The wireless response signals of each device unit in the large-scale device array are superimposed on each other, forming a specific beam propagation feature on a macro scale. The control module is the "brain" of the smart surface device. It determines the wireless signal response beam of the smart surface according to the needs of the communication system, making the original static communication environment "intelligent" and "controllable".

[0003] The working mode of RIS corresponds to the emission or transmission effect of RIS on the incident signal, and the emission or transmission effect can be controlled by the switching pattern of the diodes corresponding to all the units of RIS. For example, the switching pattern of the diodes corresponding to all the units of each type of RIS corresponds to an operating mode of RIS. In the same RIS working mode, if the incident wave and the reflected wave are swapped, the reflection effect of RIS on the incident signal is symmetrical or equivalent to a certain extent. For example, in the same working mode, the base station sends a signal to the RIS, and the RIS reflects the signal to the terminal. If the signal is transmitted from the UE, the base station can also receive the signal transmitted by the RIS. In other words, the RIS working mode has uplink and downlink symmetry. However, the uplink and downlink symmetry of the RIS working mode will affect the downlink signal reception and uplink signal transmission of the same terminal. Similarly, similar problems exist in the relay working mode.

[0004] Therefore, how to indicate the working mode of RIS or relay is an urgent problem to be solved. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a method, apparatus and device for indicating a working mode, so as to indicate the working mode of a RIS or a relay.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, a method for indicating a working mode is provided, which is performed by a first device, where the first device is a terminal, or the first device is a RIS node or a relay node, including:

[0008] First information sent by a network side device is received, where the first information indicates a RIS working mode or a relay working mode.

[0009] In a second aspect, a method for indicating a working mode is provided, which is performed by a network side device and includes:

[0010] First information is sent, where the first information indicates a RIS working mode or a relay working mode.

[0011] In a third aspect, a device for indicating a working mode is provided, including:

[0012] The first receiving module is used to receive first information, where the first information indicates a RIS working mode or a relay working mode.

[0013] In a fourth aspect, a device for indicating a working mode is provided, comprising:

[0014] The first sending module is used to send first information, where the first information indicates a RIS working mode or a relay working mode.

[0015] In a fifth aspect, a first device is provided, wherein the first device is a terminal, or the first device is a RIS node or a relay node, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method described in the first aspect are implemented.

[0016] In a sixth aspect, a network side device is provided, characterized in that it includes: a processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method described in the second aspect are implemented.

[0017] In the seventh aspect, a readable storage medium is provided, characterized in that a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0018] According to an eighth aspect, a program product is provided. The program product is stored in a non-volatile storage medium and is executed by at least one processor to implement the steps of the processing method as described in the first aspect or the second aspect.

[0019] In a ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the processing method described in the first aspect or the second aspect.

[0020] In the embodiment of the present application, the network side indicates the RIS working mode or the relay working mode, so that the uplink transmission and downlink reception of the same terminal are carried out through the same RIS working mode or the relay working mode, thereby solving the influence of the uplink and downlink symmetry of the RIS working mode or the relay working mode on the downlink signal reception and uplink signal transmission of the same terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1a and Figure 1b It is a schematic diagram of the uplink and downlink symmetry of the RIS working mode;

[0022] Figure 2 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0023] Figure 3 It is one of the flow charts of the method for indicating the working mode in the embodiment of the present application;

[0024] Figure 4 This is the second flowchart of the method for indicating the working mode in the embodiment of the present application;

[0025] Figure 5 is a schematic diagram indicating the working mode of RIS in an embodiment of the present application;

[0026] Figure 6 It is one of the schematic diagrams of the device indicating the working mode in the embodiment of the present application;

[0027] Figure 7 This is the second schematic diagram of a device indicating a working mode in an embodiment of the present application;

[0028] Figure 8 is a schematic diagram of a first device in an embodiment of the present application;

[0029] Fig. 9 It is a schematic diagram of a network side device in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specified order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, the "and" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0032] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following descriptions, although these technologies can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.

[0033] In order to facilitate understanding of the embodiments of the present application, the following technical points are first introduced below:

[0034] 1. Smart Surface / Metamaterial Surface:

[0035] Smart surfaces are an emerging technology with several related terms that refer to similar technologies or entities:

[0036] Large Intelligent Surface (LIS);

[0037] Smart Reflect Array (SRA);

[0038] Reconfigurable Reflect Array (RRA);

[0039] Intelligent Reflecting Surface (IRS);

[0040] Reconfigurable Intelligent Surface (RIS).

[0041] Smart surface technology has been applied in many technical fields, and there are many different design schemes according to different application scenarios. According to the physical principle of the device unit, it includes tunable resonator (Tunable Resonator) variable capacitance type, guided wave (Guided Wave) waveguide type, element rotation (Element Rotation) polarization type, etc.; according to the wireless signal output form, it is divided into reflective smart surface and transmissive smart surface; according to the wireless signal response parameter classification, it includes phase control type smart surface, amplitude control type smart surface and amplitude and phase joint control type smart surface; according to the response parameter control classification, it is divided into continuous control type and discrete control type; according to the frequency or speed of controlling the amplitude and phase of the smart surface, it is divided into static, semi-static / dynamic control smart surface, among which static smart surface can be applied to existing systems, such as the fourth generation (4G) / fifth generation (5G) mobile communication technology system. Considering the complexity of device design and production, the academic community generally chooses to use discrete control device units with a single wireless signal response parameter for research. At present, the intelligent reflecting surface (IRS) widely discussed in academia is a phase-controlled intelligent surface based on signal reflection. It controls the phase of the reflected signal of the device unit through 1 bit of indication information to achieve a phase flip of 0 or π.

[0042] Because they do not require RF and baseband processing circuits, smart surface devices have several advantages over traditional wireless communication transceiver devices:

[0043] (1) Smart surface devices have lower cost and implementation complexity;

[0044] (2) Smart surface devices have lower power consumption;

[0045] (3) The smart surface will not introduce additional thermal noise at the receiving end;

[0046] (4) Smart surface devices are thin and light, allowing for flexible deployment.

[0047] There are several types of RIS reflection units:

[0048] (1) Tunable resonator: A variable capacitor is integrated into the resonator to produce a phase shift by changing the frequency-agile patch resonator frequency.

[0049] (2) Waveguide control method: In this case, the arriving space wave is coupled to the waveguide by the antenna, which is then phase-shifted and re-emitted, forming an antenna phase shifter.

[0050] (3) Circularly polarized wave rotation technology: the design is based on the reflection law of electromagnetic waves.

[0051] From the perspective of whether they can be dynamically controlled, reflective arrays / smart surfaces can be divided into two categories:

[0052] (1) Static reflective array / smart surface: The structure and function of the reflective array can be fixed. For an incident wave at a certain angle, the metasurface unit causes a fixed change in the amplitude, phase, polarization mode and other characteristics of the incident wave, and obtains the corresponding reflected wave.

[0053] (2) Dynamic reflective array / smart surface: The structure and function of the reflective array are controllable. For an incident wave at an angle, the amplitude, phase, polarization and other characteristics of the incident wave can be changed differently through programmable control to obtain the corresponding reflected wave. To achieve programmable control of the reflective metasurface, a switching element (such as a diode, etc.) must be introduced into the reflective unit. PIN diodes are currently a common choice for controlling reconfigurable metasurfaces. PIN diodes have a wide range of RF impedance and low distortion, and are widely used in the microwave RF field. The switching element in the reflective unit enables it to have multiple different states, and the switching of different states can be achieved by controlling the on and off of the switching element. When the switch element is on or off, the structure and performance of the corresponding reflective unit change significantly. That is, reflective units in different states have different control modes for the amplitude, phase, polarization and other characteristics of the incident wave.

[0054] 2. Passive smart surface:

[0055] Since the smart surface is composed of a large number of device units and has no radio frequency and baseband processing capabilities, this type of smart surface is called a passive smart surface.

[0056] 3. Active and passive combined smart surface (or active smart surface):

[0057] Since the smart surface is composed of a large number of device units and has no RF and baseband processing capabilities, the base station cannot obtain the channel information from the base station to the smart surface and from the smart surface to the terminal. The received signal of the base station or the terminal is formed by the superposition of the response signals of a large number of smart surface device units. Changing the working state of one or a small number of device units does not cause a significant change in the received signal. A possible measurement scheme is to install a small number of active device units in the smart surface so that the smart surface can perform channel measurement and feedback; the base station uses compressed sensing or deep learning algorithms to infer reasonable smart surface configuration parameters from limited channel information. The communication system based on the smart surface requires an efficient channel measurement mechanism to maximize the end-to-end signal quality while ensuring the low complexity of the smart surface. This smart surface with some active devices installed has the ability to receive and even send signals, and is a combination of active and passive smart surfaces (or active smart surfaces).

[0058] 4. Uplink and downlink symmetry of RIS working mode:

[0059] The operating mode of the RIS corresponds to the emission or transmission effect of the RIS on the incident signal, and the emission or transmission effect can be controlled by the switching pattern of the diodes corresponding to all the units of the RIS. For example, the switching pattern of the diodes corresponding to all the units of each RIS corresponds to an operating mode of the RIS.

[0060] Generally speaking, RIS can only be in one working mode at a time.

[0061] In the same working mode, Figure 1a and Figure 1b As shown, the base station sends a signal to the RIS, and the RIS reflects the signal to the terminal. At this time, the RIS works in working mode 1.

[0062] Likewise, in RIS working mode 1, if a signal is transmitted from a terminal, the base station can also receive the signal transmitted via the RIS.

[0063] That is, in the same RIS operating mode, if the incident wave and the reflected wave are swapped, the reflection effect of RIS on the incident signal is symmetrical or equivalent to some extent.

[0064] 5. Uplink and downlink subframe / symbol ratio in New Radio (NR):

[0065] The fifth-generation (5G) mobile communication technology allocates the uplink and downlink resource ratios in units of time slots or even orthogonal frequency division multiplex (OFDM) symbols.

[0066] The communication system supports using cell specific and UE specific radio resource control (RRC) signaling to indicate the UE uplink and downlink subframe ratio;

[0067] The communication system supports flexible adjustment of the uplink and downlink resource ratio through downlink control information (DCI) signaling, and pre-defines 55 standardized structures (with a maximum of 254 structures reserved).

[0068] As shown in Table 1: Taking 14 symbols as an example, D represents that the symbol is a downlink symbol, U represents that the symbol is an uplink symbol, and F represents that the symbol is a flexible symbol (ie, it is uncertain whether it is an uplink or downlink symbol).

[0069] Table 1

[0070]

[0071] See also Figure 2 , the figure shows a block diagram of a wireless communication system applicable to the embodiment of the present application. The wireless communication system includes a terminal 21, a network side device 22 and a smart surface device 23. Among them, the terminal 21 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 21 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal side devices, and the wearable device includes: a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 21 is not limited in the embodiment of the present application.

[0072] The network side device 22 can be a base station or a core network, wherein the base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP), a wireless access network node or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to the specified technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0073] In combination with the accompanying drawings, a method, apparatus, device and readable storage medium for indicating a working mode provided by an embodiment of the present application are described in detail through some embodiments and their application scenarios.

[0074] See also Figure 3 An embodiment of the present application provides a method for indicating a working mode, which is performed by a first device, wherein the first device is a terminal, or the first device is a RIS node or a relay node, such as a layer 1 relay, a layer 2 relay, a layer 3 relay, or an integrated access and backhaul (IAB) node, including: step 301.

[0075] Step 301: Receive first information sent by a network side device, where the first information indicates a RIS working mode or a relay working mode.

[0076] Optionally, the first information may also be Radio Resource Control (RRC) signaling; the first time unit may be each time unit within a specific period, and the time unit may be a time slot or a symbol or other time granularity.

[0077] In the embodiment of the present application, the RIS working mode or the relay working mode is associated with at least one of the following:

[0078] (1) The beam direction of the reflected signal or refracted signal of the RIS or relay; for example, different working modes correspond to different beam directions of the reflected signal, or different working modes correspond to different beam directions of the refracted signal;

[0079] (2) a beamforming pattern of a reflected signal or a refracted signal of the RIS or the relay; for example, the beamforming pattern of the RIS is obtained by adjusting the on or off state of a diode associated with the RIS unit, that is, different on or off patterns of the diode correspond to different beamforming patterns of the reflected signal or the refracted signal of the RIS, thereby corresponding to different operating modes of the RIS;

[0080] (3) polarization of the reflected signal or refracted signal of the RIS or relay, the polarization including horizontal polarization or vertical polarization; for example, different operating modes correspond to different polarization modes; and,

[0081] (4) Orbital Angular Momentum (OAM) of the reflected or refracted signal of the RIS or relay; for example, different operating modes correspond to different OAM modes.

[0082] In the embodiment of the present application, the RIS working mode relay working mode is quasi co-location (QCL) with at least one of the following:

[0083] (1) Synchronization Signal and PBCH block (SSB) sent by the network side device;

[0084] (2) a channel state information reference signal (CSI-RS) sent by the network side device;

[0085] (3) a tracking reference signal (TRS) sent by the network-side device;

[0086] (4) a demodulation reference signal (DMRS) sent by the network side device; and

[0087] (5) Positioning reference signals (PRS) sent by the network side device.

[0088] In an embodiment of the present application, the first information further indicates the uplink configuration or downlink configuration corresponding to the RIS working mode or the relay working mode. That is, the first information can simultaneously indicate the RIS working mode and the uplink / downlink configuration of each time unit, such as the time division duplex uplink downlink configuration (tdd-UL-DL-Configuration). The uplink configuration or downlink configuration includes different configurations in Table 1.

[0089] In the embodiment of the present application, the first information is cell specific signaling or terminal specific signaling.

[0090] In the embodiment of the present application, the types of RIS working modes include: a fixed working mode and a flexible working mode.

[0091] In an embodiment of the present application, the method further includes:

[0092] If the first information indicates that the type of the RIS working mode or the relay working mode is a flexible working mode, second information is received, and the second information indicates that the RIS working mode or the relay working mode is a first working mode in the determined working modes, that is, the second information can further indicate which determined working mode the uncertain working mode is. Optionally, the second information is layer 1 signaling.

[0093] Optionally, the RIS working mode or relay working mode is a RIS working mode or relay working mode in at least part of the time units within one cycle or multiple cycles.

[0094] The uplink and downlink symmetry of the RIS working mode will affect the downlink signal reception and uplink signal transmission of the same UE, because it must be ensured that the working mode of the RIS at the time of downlink signal reception and uplink signal transmission of the same UE is the same.

[0095] If the RIS working mode or relay working mode is the RIS working mode or relay working mode for at least part of the time units within a cycle, the number of time units with the same RIS working mode or relay working mode within the one cycle is greater than 1; if the RIS working mode or relay working mode is the RIS working mode or relay working mode for at least part of the time units within multiple cycles, the number of time units with the same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

[0096] In the embodiment of the present application, the first device is a RIS or a relay node, and the method further includes: updating a working mode according to the first information.

[0097] In the embodiment of the present application, the first device is a terminal, and the method further includes: performing corresponding transmission according to the RIS working mode or the relay working mode indicated by the first information.

[0098] In the embodiment of the present application, performing corresponding transmission according to the RIS working mode or the relay working mode indicated by the first information includes one of the following:

[0099] Perform a two-step random access procedure or a four-step random access procedure according to the RIS working mode or the relay working mode indicated by the first information;

[0100] Execute transmission of uplink data or downlink data according to the RIS working mode or the relay working mode indicated by the first information;

[0101] A hybrid automatic repeat request (HARQ) process is performed according to the RIS working mode or the relay working mode indicated by the first information.

[0102] In the embodiment of the present application, the RIS working mode or the relay working mode indicated by the first information performs a four-step random access process, including:

[0103] Determine the index of the target SSB; send MSG1 at a first moment, the RIS working mode or relay working mode at the first moment is the same as the RIS working mode or relay working mode corresponding to the time unit where the target SSB is located, and the first moment corresponds to the random access opportunity associated with the index of the target SSB; after the terminal sends message 1 (MSG1), listen to message 2 (MSG2) at a second moment; wherein the RIS working mode or relay working mode at the second moment is the same as the RIS working mode or relay working mode corresponding to the moment when MSG1 is located.

[0104] In an embodiment of the present application, the method further includes: after the terminal monitors message 2, sending message 3 (MSG3) at a third moment; wherein the RIS working mode or relay working mode at the third moment is the same as the RIS working mode or relay working mode corresponding to the moment of message 2;

[0105] After the terminal sends MSG3, it receives message 4 (MSG4) at a fourth moment; wherein the RIS working mode or relay working mode at the fourth moment is the same as the RIS working mode or relay working mode corresponding to the moment of MSG3.

[0106] In the embodiment of the present application, the two-step random access process is performed according to the RIS working mode or the relay working mode indicated by the first information, including:

[0107] Determine the index of the target SSB; send a preamble code of message A (MSGA) at the fifth moment, the RIS working mode or relay working mode at the fifth moment is the same as the RIS working mode or relay working mode corresponding to the time when the target SSB is located, and the fifth moment corresponds to the random access opportunity associated with the index of the target SSB; send the MSGA at the sixth moment, the RIS working mode or relay working mode at the sixth moment is the same as the RIS working mode or relay working mode corresponding to the time when the target SSB is located; after sending the MSGA, listen to message B (MSGB) at the seventh moment, and the RIS working mode or relay working mode at the seventh moment is the same as the RIS working mode or relay working mode corresponding to the time when the MSGA is located.

[0108] In the embodiment of the present application, the performing of transmission of uplink data or downlink data according to the RIS working mode indicated by the first information includes:

[0109] Receive fourth information; determine a target SSB index; receive downlink data or send uplink data at an eighth moment, wherein the eighth moment belongs to the time resource for receiving downlink data or sending uplink data indicated by the fourth information, and the RIS working mode or relay working mode at the eighth moment is the same as the RIS working mode or relay working mode at the moment of the target SSB index.

[0110] In the embodiment of the present application, performing the HARQ process according to the RIS working mode or the relay working mode indicated by the first information includes:

[0111] An acknowledgement (ACK) or a negative acknowledgement (NACK) corresponding to the first channel is sent at a ninth moment, and the RIS working mode or the relay working mode at the ninth moment is the same as the RIS working mode or the relay working mode at the moment of transmitting the first channel, and the first channel is a physical downlink control channel (PDCCH) / physical downlink shared channel (PDSCH).

[0112] Optionally, the ninth moment is selected autonomously or determined based on network-side configuration.

[0113] In the embodiment of the present application, the network side indicates the RIS working mode or the relay working mode, so that the uplink transmission and downlink reception of the same terminal are carried out through the same RIS working mode or the relay working mode, thereby solving the influence of the uplink and downlink symmetry of the RIS working mode or the relay working mode on the downlink signal reception and uplink signal transmission of the same terminal.

[0114] See also Figure 4 , an embodiment of the present application provides a method for indicating a working mode, which is executed by a network side device, and the specific steps include: step 401.

[0115] Step 401: Send first information, where the first information indicates a RIS working mode or a relay working mode.

[0116] For example, the first information is sent to the terminal, or the first information is sent to the RIS or the relay.

[0117] In the embodiment of the present application, the RIS working mode or the relay working mode is associated with at least one of the following: (1) the beam pointing of the reflected signal or the refracted signal of the RIS or the relay; (2) the beamforming mode of the reflected signal or the refracted signal of the RIS or the relay; (3) the polarization mode of the reflected signal or the refracted signal of the RIS or the relay; and (4) the OAM mode of the reflected signal or the refracted signal of the RIS or the relay.

[0118] In an embodiment of the present application, the RIS working mode or the relay working mode is quasi-co-located with at least one of the following: (1) SSB sent by a network side device, (2) CSI-RS sent by a network side device, (3) TRS sent by a network side device, (4) DMRS sent by a network side device, and (5) PRS sent by a network side device.

[0119] In this embodiment of the present application, the first information further indicates an uplink configuration or a downlink configuration corresponding to the RIS working mode or the relay working mode.

[0120] In this embodiment of the present application, the first information is cell-specific signaling or terminal-specific signaling.

[0121] In the embodiment of the present application, the types of the RIS working mode or the relay working mode include: a fixed working mode and a flexible working mode.

[0122] In an embodiment of the present application, the method further includes: if the first information indicates that the type of the RIS working mode or the relay working mode is a flexible working mode, sending second information, wherein the second information indicates that the RIS working mode or the relay working mode is a first working mode in an uncertain working mode. Optionally, the second information is layer 1 signaling.

[0123] In the embodiment of the present application, the RIS working mode or the relay working mode is the RIS working mode or the relay working mode in at least part of the time unit in one cycle or multiple cycles.

[0124] In the embodiment of the present application, the network side indicates the RIS working mode or the relay working mode, so that the uplink transmission and downlink reception of the same terminal are carried out through the same RIS working mode or the relay working mode, thereby solving the influence of the uplink and downlink symmetry of the RIS working mode or the relay working mode on the downlink signal reception and uplink signal transmission of the same terminal.

[0125] The following four methods are combined to introduce the way to indicate the RIS working mode:

[0126] Method 1:

[0127] The RIS working mode is indicated by the base station SIB (cell specific) or RRC signaling (UE specific). The RIS working mode at each moment is determined. Among them, RRC signaling (UE specific) can replace the uncertain working mode indicated by SIB (cell specific) signaling, for example, indicating that the uncertain working mode is working mode 1.

[0128] Optionally, the tdd-UL-DL-Configuration is indicated through additional signaling.

[0129] As shown in Table 2: The RIS working mode can be indicated by SIB or RRC signaling.

[0130] Table 2

[0131] Slot or symbol index 0 1 2 3 4 5 6 7 8 9 RIS working mode 0 1 2 1 2 0 1 2 0 0

[0132] For example, the SIB or RRC signaling indicates: the RIS working mode of the time slot or symbol with index 0 is working mode 0, the RIS working mode of the time slot or symbol with index 1 is working mode 1, the RIS working mode of the time slot or symbol with index 2 is working mode 2, the RIS working mode of the time slot or symbol with index 3 is working mode 1, the RIS working mode of the time slot or symbol with index 4 is working mode 2, the RIS working mode of the time slot or symbol with index 5 is working mode 0, the RIS working mode of the time slot or symbol with index 6 is working mode 1, the RIS working mode of the time slot or symbol with index 7 is working mode 2, the RIS working mode of the time slot or symbol with index 8 is working mode 0, and the RIS working mode of the time slot or symbol with index 9 is working mode 0.

[0133] See also Figure 6, SIB or RRC signaling indicates that the RIS working mode of terminal 1 is working mode 0, indicates that the RIS working mode of terminal 2 is working mode 1, and indicates that the RIS working mode of terminal 3 is working mode 2.

[0134] Method 2:

[0135] The RIS working mode is indicated by the base station SIB (cell specific) or RRC signaling (UE specific). The RIS working mode of some time units is uncertain. Among them, RRC signaling (UE specific) can replace the uncertain working mode indicated by SIB (cell specific) signaling, for example, indicating that the uncertain working mode is working mode 1.

[0136] Then, the uncertain working mode is indicated through layer 1 signaling.

[0137] Optionally, the tdd-UL-DL-Configuration is indicated through additional signaling.

[0138] As shown in Table 3: RIS working mode that can be indicated by SIB or RRC signaling (which working mode is the pending / flexible working mode is indicated by layer 1 signaling).

[0139] Table 3

[0140] Slot or symbol index 0 1 2 3 4 5 6 7 8 9 RIS working mode 0 1 2 F F 0 1 2 F F

[0141] Among them, F represents uncertainty about which working mode of RIS it is, or an uncertain / pending / flexible working mode.

[0142] For example, the SIB or RRC signaling indicates that the RIS working mode of the time slot or symbol with index 0 is working mode 0, the RIS working mode of the time slot or symbol with index 1 is working mode 1, the RIS working mode of the time slot or symbol with index 2 is working mode 2, the RIS working mode of the time slot or symbol with index 3 is an uncertain working mode, the RIS working mode of the time slot or symbol with index 4 is an uncertain working mode, the RIS working mode of the time slot or symbol with index 5 is working mode 0, the RIS working mode of the time slot or symbol with index 6 is working mode 1, the RIS working mode of the time slot or symbol with index 7 is working mode 2, the RIS working mode of the time slot or symbol with index 8 is an uncertain working mode, and the RIS working mode of the time slot or symbol with index 9 is an uncertain working mode.

[0143] Method 3:

[0144] The RIS working mode and tdd-UL-DL-Configuration are indicated simultaneously through the base station SIB (cell specific) or RRC signaling (UE specific).

[0145] The RRC signaling (UE specific) may replace the uncertain working mode indicated by the SIB (cell specific) signaling, for example, indicating that the uncertain working mode is working mode 1.

[0146] The RIS working mode is determined for each time unit.

[0147] As shown in Table 4: RIS working mode that can be indicated by SIB or RRC signaling (which working mode is the pending / flexible working mode is indicated by layer 1 signaling).

[0148] Table 4

[0149] Slot or symbol index 0 1 2 3 4 5 6 7 8 9 DL / UL D D S U U D S U F F RIS working mode 0 1 2 1 2 0 1 2 0 0

[0150] For example, the SIB or RRC signaling indicates that the RIS working mode of the time slot or symbol with index 0 is working mode 0, and the time slot or symbol is a downlink time slot or symbol; the RIS working mode of the time slot or symbol with index 1 is working mode 1, and the time slot or symbol is a downlink time slot or symbol; the RIS working mode of the time slot or symbol with index 2 is working mode 2, and the time slot or symbol is a special time slot or special symbol; the RIS working mode of the time slot or symbol with index 3 is an uncertain working mode, and the time slot or symbol is an uplink time slot or symbol; the RIS working mode of the time slot or symbol with index 4 is an uncertain working mode, and the time slot or symbol is an uplink time slot or symbol, the RIS working mode of the time slot or symbol of index 5 is working mode 0, and the time slot or symbol is a downlink time slot or symbol, the RIS working mode of the time slot or symbol of index 6 is working mode 1, and the time slot or symbol is S, the RIS working mode of the time slot or symbol of index 7 is working mode 2, and the time slot or symbol is an uplink time slot or symbol, the RIS working mode of the time slot or symbol of index 8 is an uncertain working mode, and the time slot or symbol is a flexible time slot or symbol, and the RIS working mode of the time slot or symbol of index 9 is an uncertain working mode, and the time slot or symbol is a flexible time slot or symbol. DL / UL in mode 3 can be different configurations in Table 1.

[0151] Method 4:

[0152] The RIS working mode and tdd-UL-DL-Configuration are indicated simultaneously through the base station SIB (cell specific) or RRC signaling (UE specific). Among them, the RRC signaling (UE specific) can replace the uncertain working mode indicated by the SIB (cell specific) signaling, for example, indicating that the uncertain working mode is working mode 1.

[0153] Among them, the RIS working mode of some time units is an uncertain working mode.

[0154] Further, the uncertain RIS working mode is indicated by layer 1 signaling.

[0155] As shown in Table 5, the layer 1 signaling can simultaneously indicate which operating mode the uncertain RIS operating mode is, and which symbol / time slot (uplink or downlink) the uncertain uplink / downlink symbol / time slot is.

[0156] Table 5:

[0157]

[0158] For example, the SIB or RRC signaling indicates that the RIS working mode of the time slot or symbol with index 0 is working mode 0, and the time slot or symbol is a downlink time slot or symbol; the RIS working mode of the time slot or symbol with index 1 is working mode 1, and the time slot or symbol is a downlink time slot or symbol; the RIS working mode of the time slot or symbol with index 2 is working mode 2, and the time slot or symbol is a special time slot or special symbol; the RIS working mode of the time slot or symbol with index 3 is an uncertain working mode, and the time slot or symbol is an uplink time slot or symbol; the RIS working mode of the time slot or symbol with index 4 is an uncertain working mode, and the time slot or symbol is Uplink time slot or symbol, the RIS working mode of the time slot or symbol with index 5 is working mode 0, which is a downlink time slot or symbol, the RIS working mode of the time slot or symbol with index 6 is working mode 1, which is a special time slot or special symbol, the RIS working mode of the time slot or symbol with index 7 is working mode 2, which is an uplink time slot or symbol, the RIS working mode of the time slot or symbol with index 8 is an uncertain working mode, which is a flexible time slot or symbol, the RIS working mode of the time slot or symbol with index 9 is an uncertain working mode, which is a flexible time slot or symbol. DL / UL in mode 4 can be different configurations in Table 1.

[0159] Four application scenarios of the method for indicating the RIS working mode are introduced below in combination with Embodiment 1 to Embodiment 4.

[0160] Example 1: Four-step Random Access Channel (RACH)

[0161] After measuring and determining the target SSB index (for example, selecting the SSB whose reference signal received power (RSRP) meets a certain threshold as the target SSB index), MSG1 is sent at the random access opportunity (RACH Occasion, RO) associated with the SSB and in the time unit that satisfies the same RIS working mode as the RIS working mode corresponding to the SSB index; or, the UE determines

[0162] After sending MSG1, the UE monitors MSG2 within the first time window and in the time unit where the RIS working mode is the same as the RIS working mode corresponding to MSG1;

[0163] After the UE monitors MSG2, it sends MSG3 in the time unit indicated by MSG2;

[0164] Optionally, the RIS working mode corresponding to the time unit is the same as the RIS working mode corresponding to MSG2.

[0165] After the UE sends MSG3, the UE receives MSG4 in a time unit in the second time window and in which the RIS working mode is the same as the RIS working mode corresponding to MSG3;

[0166] The UE determines the RIS working mode corresponding to each time unit according to one of the above four indication modes.

[0167] Embodiment 2: Two-step RACH

[0168] After measuring and determining the target SSB index (for example, selecting an SSB whose RSRP meets a certain threshold as the target SSB index), the preamble of MSGA is sent in the time unit where the RO associated with the SSB and the RIS working mode is the same as the RIS working mode corresponding to the SSB index;

[0169] The UE sends the Physical Uplink Shared Channel (PUSCH) of the MSGA in the same time unit as the RIS working mode corresponding to the SSB index;

[0170] After sending the MSGA, the UE monitors the MSGB in a time unit within a third time window and in which the RIS working mode is the same as the RIS working mode corresponding to the MSGA;

[0171] The UE determines the RIS working mode corresponding to each time unit according to one of the above four indication modes.

[0172] Embodiment 3: Configuration related to configured scheduling / grant free.

[0173] The UE receives base station signaling, such as RRC signaling or layer 1 (L1) signaling;

[0174] The RRC signaling or L1 signaling indicates the time-frequency resources, modulation and coding scheme (MCS) and other information for the UE to receive downlink data / send uplink data at multiple time points;

[0175] The UE (periodically) measures and determines the target SSB index (for example, selects the SSB whose RSRP meets a certain threshold as the target SSB index);

[0176] The UE receives downlink data / sends uplink data according to the time resources for receiving downlink data / sending uplink data indicated by RRC signaling or L1 signaling (first condition) and the time when the working mode of the RIS is the same as that corresponding to the target SSB index time (second condition).

[0177] Embodiment 4: PDSCH and corresponding positive acknowledgement (Acknowledgement, ACK) / negative acknowledgement (NegativeAcknowledgement, NACK).

[0178] On the basis of determining the ACK / NACK sending time according to the prior art, the UE must also satisfy that the RIS working mode at the ACK / NACK sending time is the same as the RIS working mode at the associated physical downlink control channel (PDCCH) / physical downlink shared channel (PDSCH) time;

[0179] Specifically, the UE may autonomously select an ACK / NACK sending time that meets the conditions, or the base station may indicate, for example, through a PDCCH, an ACK / NACK sending time that meets the conditions.

[0180] It is understandable that the RIS in the above embodiment may also be some kind of relay, such as a layer 1 relay, a layer 2 relay, a layer 3 relay, or an Integrated Access and Backhaul (IAB) node.

[0181] See also Figure 6 , an embodiment of the present application provides a device for indicating a working mode, the device 600 comprising:

[0182] The first receiving module 601 is used to receive first information sent by a network side device, where the first information indicates a RIS working mode or a relay working mode.

[0183] In the embodiment of the present application, the device 600 further includes:

[0184] An updating module is used to update the working mode according to the first information.

[0185] In the embodiment of the present application, the device 600 further includes:

[0186] An execution module is used to execute corresponding transmission according to the RIS working mode or the relay working mode indicated by the first information.

[0187] In the embodiment of the present application, the RIS working mode or the relay working mode is associated with at least one of the following:

[0188] (1) Beam pointing of reflected or refracted signals from RIS or relays;

[0189] (2) The beamforming pattern of the reflected or refracted signal of the RIS or relay;

[0190] (3) the polarization of the reflected or refracted signal from the RIS or relay; and,

[0191] (4) OAM method of reflected or refracted signals of RIS or relay.

[0192] In an embodiment of the present application, the RIS working mode or the relay working mode is quasi-co-located with at least one of the following: the SSB sent by the network side device, the CSI-RS sent by the network side device, the TRS sent by the network side device, the DMRS sent by the network side device, and the PRS sent by the network side device.

[0193] In the embodiment of the present application, the first information further indicates an uplink configuration or a downlink configuration corresponding to the RIS working mode or the relay working mode.

[0194] In an embodiment of the present application, the first information is cell-specific signaling or terminal-specific signaling.

[0195] In the embodiment of the present application, the types of the RIS working mode or the relay working mode include: a fixed working mode and a flexible working mode.

[0196] In the embodiment of the present application, the device further includes:

[0197] The second receiving module is used to receive second information if the first information indicates that the type of the RIS working mode or the relay working mode is a flexible working mode, wherein the second information indicates that the RIS working mode or the relay working mode is a first working mode among the determined working modes.

[0198] In this embodiment of the present application, the second information is layer 1 signaling.

[0199] In the embodiment of the present application, the RIS working mode or the relay working mode is the RIS working mode or the relay working mode in at least part of the time units within one cycle or multiple cycles.

[0200] In an embodiment of the present application, if the RIS working mode or relay working mode is the RIS working mode or relay working mode for at least part of the time units within a cycle, the number of time units with the same RIS working mode or relay working mode within the one cycle is greater than 1; if the RIS working mode or relay working mode is the RIS working mode or relay working mode for at least part of the time units within multiple cycles, the number of time units with the same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

[0201] In an embodiment of the present application, the execution module is further used to: execute a two-step random access process or a four-step random access process according to the RIS working mode or the relay working mode indicated by the first information; or, execute transmission of uplink data or downlink data according to the RIS working mode or the relay working mode indicated by the first information; or, execute a hybrid automatic repeat request HARQ process according to the RIS working mode or the relay working mode indicated by the first information.

[0202] In the embodiment of the present application, the execution module includes:

[0203] A determination unit, used to determine the index of the target SSB;

[0204] A first sending unit, configured to send a message 1 at a first moment, wherein a RIS working mode or a relay working mode at the first moment is the same as a RIS working mode or a relay working mode corresponding to a moment at which a target SSB is located, and the first moment corresponds to a random access opportunity associated with an index of the target SSB;

[0205] A first monitoring unit, configured to monitor message 2 at a second time after the terminal sends message 1;

[0206] The RIS working mode or relay working mode at the second moment is the same as the RIS working mode or relay working mode corresponding to the moment of the message 1.

[0207] In the embodiment of the present application, the execution module further includes:

[0208] A second sending unit is used to send a message 3 at a third moment after the terminal monitors the message 2; wherein the RIS working mode or the relay working mode at the third moment is the same as the RIS working mode or the relay working mode corresponding to the moment of the message 2;

[0209] A first receiving unit, configured to receive MSG4 at a fourth time after the terminal sends MSG3;

[0210] The RIS working mode or relay working mode at the fourth moment is the same as the RIS working mode or relay working mode corresponding to the moment of MSG3.

[0211] In the embodiment of the present application, the execution module includes:

[0212] A second determining unit, configured to determine an index of a target SSB;

[0213] A third sending unit is used to send a preamble code of MSGA at a fifth moment, where the RIS working mode or the relay working mode at the fifth moment is the same as the RIS working mode or the relay working mode corresponding to the moment at which the target SSB is located, and the fifth moment corresponds to a random access opportunity associated with the index of the target SSB;

[0214] A third sending unit is used to send the MSGA at a sixth moment, and the RIS working mode or the relay working mode at the sixth moment is the same as the RIS working mode or the relay working mode corresponding to the moment of the target SSB;

[0215] The second monitoring unit is used to monitor MSGB at a seventh moment after sending the MSGA, and the RIS working mode or relay working mode at the seventh moment is the same as the RIS working mode or relay working mode corresponding to the moment of the MSGA.

[0216] In the embodiment of the present application, the execution module includes:

[0217] A second receiving unit, configured to receive fourth information;

[0218] A third determining unit, configured to determine a target SSB index;

[0219] A transceiver unit, used for receiving downlink data or sending uplink data at an eighth moment, wherein the eighth moment belongs to the time resource for receiving downlink data or sending uplink data indicated by the fourth information, and the RIS working mode or relay working mode at the eighth moment is the same as the RIS working mode or relay working mode at the moment of the target SSB index.

[0220] In an embodiment of the present application, the execution module is further used to: send a positive confirmation or a negative confirmation corresponding to the first channel at a ninth moment, and the RIS working mode or the relay working mode at the ninth moment is the same as the RIS working mode or the relay working mode at the moment of transmitting the first channel; wherein the first channel is a physical downlink control channel or a physical downlink shared channel.

[0221] In an embodiment of the present application, the ninth moment is selected autonomously or determined based on network side configuration.

[0222] The device provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the method embodiment shown achieve the same technical effect and will not be described again here to avoid repetition.

[0223] See also Figure 7 , an embodiment of the present application provides a device for indicating a working mode, the device 700 includes:

[0224] The first sending module 701 is configured to send first information, where the first information indicates a RIS working mode or a relay working mode.

[0225] In the embodiment of the present application, the RIS working mode or the relay working mode is associated with at least one of the following:

[0226] Beam pointing of reflected or refracted signals from RIS or relays;

[0227] The beamforming pattern of the reflected or refracted signal of the RIS or relay;

[0228] The polarization of the reflected or refracted signal from the RIS or relay; and,

[0229] OAM method for reflected or refracted signals of RIS or relay.

[0230] In an embodiment of the present application, the RIS working mode or the relay working mode is quasi-co-located with at least one of the following: SSB sent by a network side device, CSI-RS sent by a network side device, TRS sent by a network side device, DMRS sent by a network side device, and PRS sent by a network side device.

[0231] In the embodiment of the present application, the first information further indicates an uplink configuration or a downlink configuration corresponding to the RIS working mode or the relay working mode.

[0232] In an embodiment of the present application, the first information is cell-specific signaling or terminal-specific signaling.

[0233] In the embodiment of the present application, the types of the RIS working mode or the relay working mode include: a fixed working mode and a flexible working mode.

[0234] In the embodiment of the present application, the device further includes:

[0235] The second sending module is used to send second information if the first information indicates that the type of the RIS working mode or the relay working mode is an uncertain working mode, wherein the second information indicates that the RIS working mode or the relay working mode is a first working mode among the determined working modes.

[0236] In this embodiment of the present application, the second information is layer 1 signaling.

[0237] In the embodiment of the present application, the RIS working mode or the relay working mode is the RIS working mode or the relay working mode in at least part of the time units within one cycle or multiple cycles.

[0238] The device provided in the embodiment of the present application can achieve Figure 4 The various processes implemented by the method embodiment shown achieve the same technical effect and will not be described again here to avoid repetition.

[0239] Figure 8 A schematic diagram of the hardware structure of a first device to implement an embodiment of the present application, wherein the first device is a terminal, or the first device is a reconfigurable intelligent surface RIS or a relay.

[0240] The first device 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810 and other components.

[0241] Those skilled in the art will appreciate that the first device 800 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 810 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 8 The first device structure shown in the figure does not constitute a limitation on the first device. The first device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0242] It should be understood that in the embodiment of the present application, the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, and the graphics processor 8041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0243] In the embodiment of the present application, the radio frequency unit 801 receives downlink data from the network side device and sends it to the processor 810 for processing; in addition, the uplink data is sent to the network side device. Generally, the radio frequency unit 801 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0244] The memory 809 can be used to store software programs or instructions and various data. The memory 809 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 809 can include a high-speed random access memory, and can also include a non-volatile memory, wherein the non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0245] The processor 810 may include one or more processing units; optionally, the processor 810 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communications, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 810.

[0246] The first device provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the method embodiment shown achieve the same technical effect and will not be described again here to avoid repetition.

[0247] The present application embodiment also provides a network side device. Fig. 9 As shown, the network side device 900 includes: an antenna 901, a radio frequency device 902, and a baseband device 903. The antenna 901 is connected to the radio frequency device 902. In the uplink direction, the radio frequency device 902 receives information through the antenna 901 and sends the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be sent and sends it to the radio frequency device 902. The radio frequency device 902 processes the received information and sends it out through the antenna 901.

[0248] The frequency band processing device may be located in the baseband device 903 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 903 . The baseband device 903 includes a processor 904 and a memory 905 .

[0249] The baseband device 903 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig. 9As shown, one of the chips is, for example, a processor 904, which is connected to a memory 905 to call a program in the memory 905 to execute the network device operations shown in the above method embodiment.

[0250] The baseband device 903 may further include a network interface 906 for exchanging information with the radio frequency device 902 . The interface may be, for example, a common public radio interface (CPRI for short).

[0251] Specifically, the network side device of the embodiment of the present application further includes: an instruction or program stored in the memory 905 and executable on the processor 904, and the processor 904 calls the instruction or program in the memory 905 to execute Figure 7 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0252] The embodiment of the present application also provides a program product, which is stored in a non-volatile storage medium and is executed by at least one processor to implement the following Figure 3 or Figure 4 The steps of the processing method.

[0253] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the above Figure 3 or Figure 4 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0254] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0255] The present application also provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a network side device program or instruction to implement the above Figure 3 or Figure 4 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0256] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0257] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0258] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0259] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A method for indicating a working mode, performed by a first device, wherein the first device is a terminal, or the first device is a reconfigurable intelligent surface RIS node or a relay node, characterized in that: include: receiving first information sent by a network side device, wherein the first information indicates a RIS working mode or a relay working mode; The RIS working mode or relay working mode is a RIS working mode or relay working mode in at least part of the time units in one cycle or multiple cycles; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in a cycle, the number of time units with the same RIS working mode or relay working mode in the cycle is greater than 1; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in multiple cycles, the number of time units with the same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

2. The method according to claim 1, characterized in that The first device is a RIS or a relay node, and the method further includes: The working mode is updated according to the first information.

3. The method according to claim 1, characterized in that: The first device is a terminal, and the method further includes: According to the RIS working mode or the relay working mode indicated by the first information, corresponding transmission is performed.

4. The method according to claim 1, characterized in that: The RIS working mode or the relay working mode is associated with at least one of the following: Beam pointing of reflected or refracted signals from RIS or relays; The beamforming pattern of the reflected or refracted signal of the RIS or relay; The polarization of the reflected or refracted signal from the RIS or relay; and, The orbital angular momentum (OAM) mode of the reflected or refracted signal of the RIS or relay.

5. The method according to claim 1, characterized in that: The RIS working mode or the relay working mode is quasi-co-located with at least one of the following items sent by the network side device: The network side device sends a synchronization signal block SSB, a channel state information reference signal CSI-RS, a tracking reference signal TRS, a demodulation reference signal DMRS, and a positioning reference signal PRS.

6. The method according to claim 1, characterized in that The first information is also used to indicate an uplink configuration or a downlink configuration corresponding to the RIS working mode or the relay working mode.

7. The method according to claim 1, characterized in that The first information is cell-specific signaling or terminal-specific signaling.

8. The method according to claim 1, characterized in that: The types of the RIS working mode or relay working mode include: a fixed working mode and a flexible working mode.

9. The method according to claim 8, characterized in that The method further comprises: If the first information indicates that the type of the RIS working mode or the relay working mode is a flexible working mode, second information is received, wherein the second information indicates that the RIS working mode or the relay working mode is a first working mode among the determined working modes.

10. The method according to claim 9, characterized in that The second information is layer 1 signaling.

11. The method according to claim 3, characterized in that The performing corresponding transmission according to the RIS working mode or the relay working mode indicated by the first information includes one of the following: Perform a two-step random access procedure or a four-step random access procedure according to the RIS working mode or the relay working mode indicated by the first information; Execute transmission of uplink data or downlink data according to the RIS working mode or the relay working mode indicated by the first information; A hybrid automatic repeat request HARQ process is performed according to the RIS working mode or the relay working mode indicated by the first information.

12. The method according to claim 11, characterized in that According to the RIS working mode or the relay working mode indicated by the first information, a four-step random access process is performed, including: Determine the index of the target SSB; Sending message 1 at a first moment, the RIS working mode or relay working mode at the first moment is the same as the RIS working mode or relay working mode corresponding to the moment of the target SSB, and the first moment corresponds to a random access opportunity associated with the index of the target SSB; After the terminal sends message 1, monitoring message 2 at a second time; The RIS working mode or relay working mode at the second moment is the same as the RIS working mode or relay working mode corresponding to the moment of the message 1.

13. The method according to claim 12, characterized in that The method further comprises: After the terminal monitors message 2, sending message 3 at a third moment; The RIS working mode or relay working mode at the third moment is the same as the RIS working mode or relay working mode corresponding to the moment of the message 2; After the terminal sends message 3, receiving message 4 at a fourth moment; The RIS working mode or relay working mode at the fourth moment is the same as the RIS working mode or relay working mode corresponding to the moment of the message 3.

14. The method according to claim 11, characterized in that According to the RIS working mode or the relay working mode indicated by the first information, a two-step random access process is performed, including: Determine the index of the target SSB; Sending a preamble of message A at a fifth moment, wherein the RIS working mode or relay working mode at the fifth moment is the same as the RIS working mode or relay working mode corresponding to the moment at which the target SSB is located, and the fifth moment corresponds to a random access opportunity associated with the index of the target SSB; Sending the message A at a sixth moment, wherein the RIS working mode or the relay working mode at the sixth moment is the same as the RIS working mode or the relay working mode corresponding to the moment of the target SSB; After sending the message A, the message B is monitored at the seventh moment, and the RIS working mode or relay working mode at the seventh moment is the same as the RIS working mode or relay working mode corresponding to the moment of the message A.

15. The method according to claim 11, characterized in that The performing transmission of uplink data or downlink data according to the RIS working mode or the relay working mode indicated by the first information includes: receiving fourth information; Determine the target SSB index; Receive downlink data or send uplink data at an eighth moment, wherein the eighth moment belongs to the time resource for receiving downlink data or sending uplink data indicated by the fourth information, and the RIS working mode or relay working mode at the eighth moment is the same as the RIS working mode or relay working mode at the moment of the target SSB index.

16. The method according to claim 11, characterized in that The performing the HARQ process according to the RIS working mode or the relay working mode indicated by the first information includes: Send a positive confirmation or a negative confirmation corresponding to the first channel at the ninth moment, and the RIS working mode or the relay working mode at the ninth moment is the same as the RIS working mode or the relay working mode at the moment of transmitting the first channel; wherein the first channel is a physical downlink control channel or a physical downlink shared channel.

17. The method according to claim 16, characterized in that The ninth moment is selected autonomously or determined based on network side configuration.

18. A method for indicating a working mode, executed by a network side device, characterized in that: include: Sending first information, wherein the first information indicates a RIS working mode or a relay working mode; The RIS working mode or relay working mode is a RIS working mode or relay working mode in at least part of the time units in one cycle or multiple cycles; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in a cycle, the number of time units with the same RIS working mode or relay working mode in the cycle is greater than 1; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in multiple cycles, the number of time units with the same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

19. The method according to claim 18, characterized in that The RIS working mode or the relay working mode is associated with at least one of the following: Beam pointing of reflected or refracted signals from RIS or relays; The beamforming pattern of the reflected or refracted signal of the RIS or relay; The polarization of the reflected or refracted signal from the RIS or relay; and, The operation, maintenance and management method of the reflected or refracted signals of RIS or relay.

20. The method according to claim 18, characterized in that The RIS working mode or the relay working mode is quasi-co-located with at least one of the following items sent by the network side device: SSB, CSI-RS, TRS, DMRS, and PRS.

21. The method according to claim 18, characterized in that The first information further indicates an uplink configuration or a downlink configuration corresponding to the RIS working mode or the relay working mode.

22. The method according to claim 18, characterized in that The first information is cell-specific signaling or terminal-specific signaling.

23. The method according to claim 18, characterized in that The types of the RIS working mode or relay working mode include: a determined working mode and an uncertain working mode.

24. The method according to claim 18, characterized in that The method further comprises: If the first information indicates that the type of the RIS working mode or the relay working mode is an uncertain working mode, second information is sent, wherein the second information indicates that the RIS working mode or the relay working mode is a first working mode among the determined working modes.

25. The method according to claim 24, characterized in that The second information is layer 1 signaling.

26. A device for indicating a working mode, characterized in that: include: A first receiving module, configured to receive first information, wherein the first information indicates a RIS working mode or a relay working mode; The RIS working mode or relay working mode is a RIS working mode or relay working mode in at least part of the time units in one cycle or multiple cycles; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in a cycle, the number of time units with the same RIS working mode or relay working mode in the cycle is greater than 1; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in multiple cycles, the number of time units with the same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

27. A device for indicating a working mode, characterized in that: include: A first sending module, used for sending first information, wherein the first information indicates a RIS working mode or a relay working mode; The RIS working mode or relay working mode is a RIS working mode or relay working mode in at least part of the time units in one cycle or multiple cycles; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in a cycle, the number of time units with the same RIS working mode or relay working mode in the cycle is greater than 1; If the RIS working mode or relay working mode is the RIS working mode or relay working mode on at least part of the time units in multiple cycles, the number of time units with the same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

28. A first device, wherein the first device is a terminal, or the first device is a RIS node or a relay node, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 1 to 17 are implemented.

29. A network side device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program implements the steps of the method according to any one of claims 18 to 25 when executed by the processor.

30. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 25 are implemented.

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