Signal transmission method and apparatus, and terminal device and network device

Abstract

The embodiments of the present application provide a signal transmission method and apparatus, and a terminal device and a network device. The method comprises: a first device detecting a first signal on the basis of a first transmission resource, wherein the first signal is a signal transmitted after a second signal sent by a second device is reflected and / or refracted by means of a third device, the second signal is detected on a second transmission resource, and the first transmission resource is different from the second transmission resource.

Description

Signal transmission method and device, terminal equipment, and network equipment Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a signal transmission method and apparatus, terminal equipment, and network equipment. Background Art

[0002] Smart surface devices, such as Large Intelligent Surfaces (LIS) and Reconfigurable Intelligent Surfaces (RIS), are emerging artificial material devices. For example, RIS devices can dynamically or semi-statically change their electromagnetic properties, affecting the reflection or refraction of electromagnetic waves incident on them. By manipulating the reflected or refracted electromagnetic waves, RIS devices can achieve functions such as beam scanning and beamforming.

[0003] Future wireless networks may deploy a large number of smart surface devices, replacing the dense deployment of base stations. After the introduction of smart surface devices into wireless networks, the beams formed by the signals forwarded by these devices may differ from the beams originally configured by network devices without them. How to configure signals within the network for effective beam management is a pressing technical challenge.

[0004] Summary of the Invention

[0005] The present application provides a signal transmission method and apparatus, terminal equipment, and network equipment, which can realize the beam management function after the introduction of smart surface equipment.

[0006] In a first aspect, a signal transmission method is provided, comprising:

[0007] The first device detects a first signal based on a first transmission resource; wherein the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; the first transmission resource is different from the second transmission resource.

[0008] In a second aspect, a signal transmission method is provided, comprising:

[0009] The second device sends a second signal on a second transmission resource; the second transmission resource is different from the first transmission resource, the first transmission resource is used to transmit a first signal, and the first signal is a signal sent after the second signal is reflected and / or refracted by a third device.

[0010] According to a third aspect, a signal transmission method is provided, comprising:

[0011] The third device sends a first signal on a first transmission resource, where the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by the third device; the second signal is detected on a second transmission resource; the first transmission resource is different from the second transmission resource.

[0012] In a fourth aspect, a signal transmission apparatus is provided, applied to a first device, including:

[0013] A first receiving unit is configured to detect a first signal based on a first transmission resource; wherein the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; and the first transmission resource is different from the second transmission resource.

[0014] In a fifth aspect, a signal transmission apparatus is provided, applied to a second device, including:

[0015] The second sending unit is configured to send a second signal on a second transmission resource; the second transmission resource is different from the first transmission resource, the first transmission resource is used to transmit a first signal, and the first signal is a signal sent after the second signal is reflected and / or refracted by a third device.

[0016] In a sixth aspect, a signal transmission apparatus is provided, applied to a third device, including:

[0017] The third sending unit is configured to send a first signal on a first transmission resource, where the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by the third device; the second signal is detected on the second transmission resource; the first transmission resource is different from the second transmission resource.

[0018] In a seventh aspect, a communication device is provided, the network device comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the signal transmission method described in any one of the first to third aspects.

[0019] In an eighth aspect, a computer-readable medium is provided, wherein the computer-readable medium stores a program code for execution by a device, wherein the program code includes instructions for executing the signal transmission method described in any one of the first to third aspects.

[0020] In the ninth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory. The processor is used to execute the code in the memory. When the code is executed, the processor can implement the signal transmission method described in any of the first to third aspects.

[0021] In the signal transmission method provided herein, a first device can detect a first signal based on a first transmission resource; wherein the first signal is a second signal transmitted by a second device and then transmitted after being reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; and the first transmission resource is different from the second transmission resource. In other words, the first device can detect the first signal forwarded by a third device on a transmission resource different from the second signal directly transmitted by the second device. In this way, the first device can perform beam management based on the detected first signal, thus implementing beam management functionality after the introduction of smart surface devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] FIG1 is a schematic diagram of a communication architecture according to an embodiment of the present application;

[0024] FIG2 is a schematic diagram of an SSB timing structure provided in an embodiment of the present application;

[0025] FIG3 is a flow chart of a signal transmission method according to an embodiment of the present application;

[0026] FIG4 is a schematic diagram of an application scenario provided by an embodiment of the present application;

[0027] FIG5 is a schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0028] FIG6A is a second schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0029] FIG6B is a third schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0030] FIG6C is a fourth schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0031] FIG7 is a second flow chart of a signal transmission method provided in an embodiment of the present application;

[0032] FIG8 is a fifth schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0033] FIG9 is a sixth schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0034] FIG10 is a schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0035] FIG11 is a schematic structural diagram of a signal transmission device 1100 provided in an embodiment of the present application;

[0036] FIG12 is a schematic structural diagram of a signal transmission device 1200 provided in an embodiment of the present application;

[0037] FIG13 is a schematic structural diagram of a signal transmission device 1300 provided in an embodiment of the present application;

[0038] FIG14 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0039] FIG15 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0040] FIG16 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine Type Communication (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

[0043] Figure 1 is a schematic diagram of a communication architecture according to an embodiment of the present application. As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0044] It should be understood that the embodiments of the present application are only exemplified by the communication system 100, but the embodiments of the present application are not limited thereto.

[0045] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (eg, UE) located within the coverage area.

[0046] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0047] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0048] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0049] The wireless communication system 100 may further include a core network device 130 that communicates with the network device 120. The core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (UPF), or a Session Management Function (SMF). Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions that can be implemented by SMF and PGW-C. During the network evolution process, the above-mentioned core network device may also be called other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in the embodiments of the present application.

[0050] The functional units in the communication system 100 may also establish connections and implement communication via next generation (NG) network interfaces.

[0051] Figure 1 exemplarily shows a network device, a core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0052] It should be noted that Figure 1 is merely an example of a system applicable to this application. Of course, the methods described in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the associated objects are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an association relationship. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct or indirect correspondence between two objects, or that there is an association relationship between the two objects, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, such as LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0053] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0054] 1. Random access process

[0055] The terminal device can obtain the master information block (MIB) sent by the network device by searching the synchronization signal and physical broadcast channel (PBCH, SSB). Furthermore, the terminal device can obtain the time domain resources and frequency domain resources of the control resource set (CORESET) based on the MIB. In this way, the terminal device can detect the downlink control information (DCI) of the scheduling system information block (SIB) on the time domain resources and frequency domain resources of the CORESET, and receive SIB1 at the time and frequency position indicated by the DCI. In this way, the terminal device can obtain the initial uplink bandwidth part (Initial UL BWP), initial downlink bandwidth part (Initial DL BWP), random access preamble list, random access opportunity (RACH occasion, RO) list and other information indicated in SIB1.

[0056] Furthermore, according to SIB1, the terminal device may send a physical random access channel (PRACH) carrying a random access preamble in the RO resources associated with the SSB.

[0057] 2. SSB

[0058] An SSB may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) distributed over four consecutive orthogonal frequency division multiplex (OFDM) symbols. Referring to the SSB timing structure diagram shown in Figure 2, an SSB burst set period includes multiple SSBs (for example, 8 SSBs), and different SSBs may correspond to different beam directions. The SSB burst set period supported by NR is 5 milliseconds (ms), 10ms, 20ms, and so on.

[0059] A distinctive feature of NR cells is their support for downlink multi-beams. Before a network device communicates with a terminal device, it needs to know the terminal device's beam so it can set the appropriate beam direction during subsequent data transmission. Since the PRACH in the random access process is the first message sent by the terminal device to the network, and the network device needs to know the terminal device's beam information when sending Message 2 (Msg2) of the random access process, the function of reporting the terminal device's beam is naturally carried by the PRACH.

[0060] Since the random access preamble sequence (preamble) carried by PRACH is a sequence signal and cannot carry information explicitly, it can use the time-frequency resources occupied by the preamble or different preamble sequences to implicitly carry beam information. Therefore, the NR system needs to establish a mapping relationship between SSB and RO.

[0061] Before initiating a free access, the terminal device can measure and evaluate the signal quality of the cell and the signal strength of each SSB in the cell. When initiating PRACH, the terminal device can send a preamble on the RO corresponding to the SSB with the strongest or relatively strong signal. If the network device successfully receives the preamble, it will obtain the downlink beam information of the terminal device based on the RO where the preamble is located, and then use this beam information for subsequent communications, such as transmitting Msg2 and Msg4.

[0062] It should be understood that there are multiple possible mapping relationships between SSBs and ROs: 1) one-to-one mapping; 2) many-to-one mapping; and 3) one-to-many mapping. To support diverse scenarios, all three of these mapping relationships are supported in the NR standard. For example, in scenarios with a small number of users, multiple SSBs can be mapped to the same RO to conserve PRACH resources. In scenarios with a large number of users, one SSB can be mapped to multiple ROs to provide sufficient PRACH capacity.

[0063] In actual applications, the NR system has multiple SSBs actually transmitted, multiple RO resources configured, and preamble resources. Network devices and terminal devices need to know which RO resources and preamble resources each SSB corresponds to. Based on this, the standard specifies the rules for the mapping order of SSBs, ROs, and preamble resources as follows:

[0064] First, the order of preamble indexes in a PRACH occasion is increasing;

[0065] Second, the frequency resource index order of the frequency reuse PRACH occasion is increasing;

[0066] Third, the order of the time domain resource index of the time domain multiplexing PRACH occasion within the PRACH time slot is increasing;

[0067] Fourth, the order of PRACH slot indexes is increasing.

[0068] 3. Smart Surfaces

[0069] For example, Large Intelligent Surfaces (LIS) or Reconfigurable Intelligent Surfaces (RIS) are emerging artificial material devices.

[0070] Smart surfaces are an emerging artificial material technology. Several related terms refer to similar technologies or entities, including: Large Intelligent Surface (LIS), Smart Reflect Array (SRA), Reconfigurable Reflect Array (RRA), Intelligent Reflecting Surface (IRS), and Reconfigurable Intelligent Surfaces (RIS). For simplicity, RIS will be used in the following discussion.

[0071] RIS devices can dynamically or semi-statically change their electromagnetic properties, affecting the reflection and refraction of electromagnetic waves incident on them. By manipulating the reflected and refracted electromagnetic waves, RIS devices implement beam scanning and beamforming functions. As can be understood, RIS devices use a simulated beam forwarding method to forward downlink signals from network devices to terminal devices, and conversely, forward uplink signals from terminal devices to network devices.

[0072] Thanks to the fact that RIS devices do not require RF and baseband processing circuits, they have the advantages of lower cost and implementation complexity, lower power consumption, thin thickness, light weight, no introduction of additional receiving-end thermal noise, and flexible deployment compared to traditional wireless communication transceiver equipment.

[0073] It should be understood that the terminal device typically dynamically selects the optimal beam for communication with the network device based on signal quality. For example, the network device periodically transmits signal bursts (e.g., SSB bursts or CSI-RS bursts) in a beam scanning manner. That is, the network device transmits different signals on different beams in a time-division multiplexing manner. Accordingly, the terminal device can measure the signal and select the beam corresponding to the signal whose measurement result meets the conditions as the optimal beam for communication.

[0074] Future wireless networks may deploy a large number of RIS devices to replace densely deployed base stations. For example, RIS devices can be used to forward signals from network devices (such as SSB or CSI-RS) to enhance coverage. However, after the introduction of RIS devices, the beams formed by the signals forwarded by the RIS devices may differ from the beams originally configured by the network devices without RIS devices. How to configure signals in the network for effective beam management is a pressing technical issue.

[0075] Based on this, an embodiment of the present application provides a signal transmission method, in which a first device can detect a first signal based on a first transmission resource; wherein the first signal is a signal transmitted by a second device after being reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; and the first transmission resource is different from the second transmission resource. In other words, the first device can detect the first signal forwarded by the third device on a transmission resource different from the second signal directly transmitted by the second device. In this way, the first device can perform beam management based on the detected first signal, thus realizing the beam management function after the introduction of smart surface devices.

[0076] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0077] FIG3 shows a signal transmission method provided by an embodiment of the present application, which may include:

[0078] S310. The second device sends a second signal on a second transmission resource.

[0079] S320: The third device sends a first signal on the first transmission resource, where the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by the third device.

[0080] S330. The first device detects a first signal based on a first transmission resource; the first transmission resource is different from the second transmission resource.

[0081] In some embodiments, the first device is a terminal device, the second device is a network device, and the third device is a smart surface device, such as a RIS device. Alternatively, the first device is a network device, the second device is a terminal device, and the third device is a smart surface device.

[0082] It is understood that the third device can forward signals between the first device and the second device. For example, Figure 4 shows a schematic diagram of an application scenario implemented by the present application. The third device can receive the second signal sent by the second device, reflect and / or refract the second signal to form the first signal. The third device can then send the first signal to the first device.

[0083] It should be noted that the first signal and the second signal may be signals of the same type. In the embodiment of the present application, the first signal and the second signal may be reference signals for beam management. For example, the first signal and the second signal may be SSB, or Channel State Information Reference Signal (CSI-RS), or Sounding Reference Signal (SRS), etc., which is not limited in the embodiment of the present application.

[0084] In this embodiment of the present application, a second device can transmit a second signal over a second transmission resource. A third device can transmit a first signal formed by reflection and / or refraction of the second signal over a first transmission resource. In other words, the second signal is directly transmitted by the second device, while the first signal is forwarded by the third device.

[0085] It should be noted that the second device can send multiple second signals on the second transmission resource, each corresponding to a different original beam direction. Correspondingly, the third device can forward the second signal and send multiple first signals on the first transmission resource, each corresponding to a different forwarding beam direction. Referring to Figure 4, the second device can send four second signals, namely, second signal 1, second signal 2, second signal 3, and second signal 4. The third device can send three first signals on the first transmission resource, namely, first signal 1, first signal 2, and first signal 3, each corresponding to a different forwarding beam, to achieve forwarding of the second signal.

[0086] It is understandable that the first device can detect the first signal on the first transmission resource. The first device can receive multiple first signals with different signal strengths on the first transmission resource. Furthermore, the first device can select the beam corresponding to the first signal with the strongest signal strength, and the beam corresponding to the second signal associated with the first signal. In this way, the beam for communication between the second device and the third device, and the beam for communication between the third device and the second device can be determined.

[0087] For example, referring to FIG4 , the first device detects that the signal strength of first signal 2 is the strongest, where first signal 2 can be associated with second signal 1. At this point, the first device can select the forwarding beam corresponding to first signal 2 and the original beam corresponding to second signal 1 to form a beam for communication between the first, second, and third devices.

[0088] In the embodiment of the present application, the first device may also detect the second signal on the second transmission resource. Considering the physical location relationship between the second device and the first device, in some scenarios, the first device may not be able to detect the second signal.

[0089] It should be noted that the transmission resources (eg, the first transmission resource and the second transmission resource) mentioned in the embodiments of the present application may include time domain resources and / or frequency domain resources.

[0090] It should also be noted that the first transmission resource and the second transmission resource in the embodiment of the present application are different. The first transmission resource and the second transmission resource being different may mean that the time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource, and / or the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource.

[0091] In one possible implementation, the first device can detect the first signal on the same time domain resource as the second transmission resource and on a frequency domain resource different from the second transmission resource. That is, the frequency resource can be expanded on the basis of the originally configured second transmission resource to detect the first signal, thereby traversing the forwarding beam of the third device.

[0092] In another possible implementation, the first device may also detect the first signal on the same frequency domain resource as the second transmission resource and on a time domain resource different from the second transmission resource. That is, the time domain resource may be expanded on the basis of the originally configured second transmission resource to detect the first signal, thereby traversing the forwarding beam of the third device in the time domain.

[0093] In another possible implementation, the first device may also detect the first signal on a time domain resource and a frequency domain resource that are different from the second transmission resource. It is understandable that the frequency resource and the time domain resource may be expanded based on the originally configured second transmission resource to detect the first signal.

[0094] It should be noted that the first transmission resource and the second transmission resource can be predefined, determined according to preset rules, or configured by the network, and this embodiment of the present application does not limit this. For example, if the second signal is SSB, the first device can obtain the second signal through cell search, that is, the second transmission resource for detecting the second signal can be predefined by the protocol.

[0095] It should also be noted that the first transmission resource may be related to the second transmission resource. For example, the frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource is a preset value, or the time domain position of the first transmission resource is determined based on the time domain position of the second transmission resource. In addition, the first transmission resource may be independent of the second transmission resource and may be independently configured. This embodiment of the present application is not limited to this.

[0096] It can be understood that in an embodiment of the present application, the first device can detect the first signal forwarded by the third device on a transmission resource different from the second signal directly sent by the second device. In this way, the first device can perform beam management based on the detected first signal, thereby realizing the beam management function after the introduction of the smart surface device.

[0097] It should be noted that there are multiple ways to determine the first transmission resource.

[0098] In a method for determining a first transmission resource provided in an embodiment of the present application, the first transmission resource and the second transmission resource are different, which may include that the time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource. The time domain resource of the first transmission resource can be determined based on the time domain resource of the second transmission resource.

[0099] In some embodiments, the first signal and the second signal may be burst set signals. The first signal may correspond to a first burst set. It should be understood that the first burst set may include multiple first signals (corresponding to different signal index values), with different first signals corresponding to different beam directions. In other words, the third device may repeatedly send the first burst set according to a certain time period to implement beam scanning within its service range. In this embodiment of the present application, the period of the first burst set is referred to as the first time period.

[0100] In addition, the second signal corresponds to the second burst set. It should be understood that the second burst set can include multiple second signals, and different second signals can correspond to different beam directions. In other words, the second device can repeatedly send the second burst set according to a certain period to achieve beam scanning within its service range. In the embodiments of the present application, the period of the second burst set is referred to as the second time period.

[0101] It is understood that the time domain resources of the first transmission resource and the time domain resources of the second transmission resource are different, which may include a first time period and a second time period being different. In other words, the time domain resources of the first transmission resource and the second transmission resource are different, which may mean that the periods of the first burst set corresponding to the first signal and the second burst set corresponding to the second signal are different.

[0102] The first time period can be determined based on the second time period and the number of first signals included in the first burst set. In other words, the period of the first burst set corresponding to the first signal can be determined based on the period of the second burst set corresponding to the second signal and the number of first signals included in the first burst set.

[0103] For example, if the second time period is m time units and the number of first signals included in the first burst set is n, then the first time period is at most (i.e., less than or equal to) m*n time units. Here, m and n are both integers greater than 0. Furthermore, the time unit in the embodiments of the present application may be a time slot, a frame, a half-frame, a subframe, etc., which is not limited in the embodiments of the present application.

[0104] It is understandable that the n first signals included in the first burst set may correspond to n forwarding beams of the third device, wherein the third device may use some or all of the n forwarding beams to forward each second signal in the second burst set.

[0105] For example, refer to the time-frequency resource diagram shown in Figure 5. The second burst set period corresponding to the second signal is 5ms, and the number of first signals included in the first burst set corresponding to the first signal is 2 (that is, the third device is configured with 2 forwarding beams: forwarding beam 1 and forwarding beam 2). Correspondingly, the first burst set period corresponding to the first signal is 10ms. It can be understood that the third device can first use the beam direction corresponding to forwarding beam 1 to forward each second signal in the second burst set, and then use the beam direction corresponding to forwarding beam 2 to forward each second signal in the second burst set.

[0106] It should be noted that the above parameters for determining the first transmission resource, ie, the above second time period, and / or the number of first signals included in the first burst set, may be predefined by the protocol or configured by the network device.

[0107] For example, the second device may send first configuration information, and the first device may receive the first configuration information accordingly. The first configuration information may be used to configure the second time period and / or the number of first signals included in the first burst set. In this way, the first device may determine a first transmission resource for detecting the first signal based on the first configuration information.

[0108] It should be noted that the third device may also receive the first configuration information, and determine the first transmission resource for sending the first signal based on the first configuration information.

[0109] The first configuration information may be carried through broadcast signaling, for example, through SIB or MIB.

[0110] This method increases the period of the second burst set, enabling beam scanning of each forwarding beam in the third device. In this way, the first device can detect the first signal based on the first time period, and determine the beam corresponding to the first signal based on the measurement result of the first signal, thereby implementing beam management.

[0111] In another method for determining the first transmission resource provided in an embodiment of the present application, the difference between the first transmission resource and the second transmission resource may include: the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource. The frequency domain position of the first transmission resource may be determined based on one or more of the following:

[0112] First frequency domain position;

[0113] The frequency domain position of the second transmission resource and the first frequency domain offset value;

[0114] The frequency domain position of the downlink bandwidth part (Bandwidth Part, BWP) and the second frequency domain offset value;

[0115] The BWP corresponding to the second signal.

[0116] In some embodiments, the frequency domain position of the first transmission resource may be a fixed first frequency domain position. The first frequency domain position may be predetermined or pre-configured by the network, which is not limited in the embodiments of the present application.

[0117] In some embodiments, the frequency domain position of the first transmission resource may be determined based on the frequency domain position of the second transmission resource and the first frequency domain offset value.

[0118] It can be understood that the frequency domain position of the first transmission resource can be the sum of the frequency domain position reference point of the second transmission resource and the first frequency domain offset value.

[0119] It should be noted that the unit of the first frequency domain offset value may be a resource block (RB) or a resource element (RE). In addition, the first frequency domain offset value may be a positive number or a negative number, which is not limited in the embodiment of the present application.

[0120] The frequency domain position reference point of the second transmission resource may be the RB / RE with the smallest index value in the second transmission resource, or the RB / RE with the largest index value in the second transmission resource. In other words, the frequency domain position reference point of the second transmission resource may be the RB / RE at the start of the second transmission resource, or the RB / RE at the end of the second transmission resource. This embodiment of the application does not limit the frequency domain position reference point of the second transmission resource.

[0121] In some embodiments, the frequency domain position of the first transmission resource may be determined based on the frequency domain position of the BWP of the first device and the second frequency domain offset value.

[0122] It can be understood that the frequency domain position of the first transmission resource can be the sum of the frequency domain position reference point of the BWP of the first device and the second frequency domain offset value. Among them, the BWP frequency domain position reference point of the first device can be the RB / RE with the smallest index value in the BWP of the first device, or the RB / RE with the largest index value in the BWP of the first device. In other words, the BWP frequency domain position reference point of the first device is the RB at which the BWP of the first device starts, or the RB at which the BWP of the first device ends. This embodiment of the present application does not impose any restrictions on this.

[0123] It should be noted that the unit of the second frequency domain offset value may be RB or RE. In addition, the second frequency domain offset value may be a positive number or a negative number, which is not limited in the embodiment of the present application.

[0124] It should also be noted that the BWP of the first device may be the uplink BWP of the first device, or the downlink BWP of the first device, and this embodiment of the present application does not limit this.

[0125] In some embodiments, the frequency domain location of the first transmission resource may also be determined based on the BWP corresponding to the second signal. For example, the first signal and the second signal may be located at the same BWP but on different frequency domain resources.

[0126] In an embodiment of the present application, the time domain resources of the first transmission resource are the same as the time domain resources of the second transmission resource, and the multiple first signals included in the first burst set corresponding to the first signal and the multiple second signals included in the second burst set corresponding to the second signal may have a corresponding relationship.

[0127] It should be noted that the time domain resources of the first transmission resource are the same as the time domain resources of the second transmission resource. It can be understood that the time domain resources for detecting multiple first signals in the first transmission resource are the same as the time domain resources for detecting multiple second signals in the second transmission resource.

[0128] It should be understood that the third device can forward multiple second signals (corresponding to the second burst set) sent by the second device and send multiple first signals (corresponding to the first burst set) on the first transmission resource. Therefore, there is a corresponding relationship between the multiple second signals and the multiple first signals.

[0129] In a possible implementation, when the number of the multiple first signals included in the first burst set is the same as the number of the multiple second signals included in the second burst set, the multiple first signals may correspond one-to-one to the multiple second signals.

[0130] The number of the multiple first signals in the first burst set is the same as the number of the multiple second signals in the second burst set. This can be understood as the number of original beams corresponding to the second device and the number of forwarding beams corresponding to the third device being the same. In this case, one original beam can correspond to one forwarding beam.

[0131] It should be noted that the one-to-one correspondence between the multiple first signals and the multiple second signals may be two signals with the same index value. For example, with reference to FIG6A , the first signal with an index value of 1 corresponds to the second signal with an index value of 1, the first signal with an index value of 2 corresponds to the second signal with an index value of 2, and so on. In addition, the one-to-one correspondence between the multiple first signals and the multiple second signals may also be that the first signal with the smallest index value corresponds to the second signal with the largest index value, and the first signal with the second smallest index value corresponds to the second signal with the second largest index value. For example, with reference to FIG6A , the first signal with an index value of 1 corresponds to the second signal with an index value of 4, the first signal with an index value of 2 corresponds to the second signal with an index value of 3, and so on. The embodiments of the present application do not limit the above correspondence.

[0132] In some embodiments, when the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with a second signal in the second burst set, or one or more second signals in the second burst set are associated with a first signal in the first burst set.

[0133] Among them, the number of multiple first signals in the first burst set is different from the number of multiple second signals included in the second burst set. It can be understood that the number of original beams corresponding to the second device is different from the number of forwarding beams corresponding to the third device.

[0134] In some embodiments, if the number of first signals in the first burst set is greater than the number of second signals in the second burst set (i.e., the number of forwarding beams of the third device is greater than the number of original beams of the second device), one or more first signals can correspond to one second signal (i.e., one or more forwarding beams correspond to one original beam).

[0135] Specifically, if the number of first signals in the first burst set is p, and the number of second signals in the second burst set is q, and p>q, then multiple first signals can correspond to the same second signal. A second signal with an index value of 0 can correspond to multiple first signals with index values ​​of [0, floor(p / q)-1], and so on.

[0136] Exemplarily, referring to FIG. 6B , the first signal 1 and the first signal 2 may correspond to the same second signal 1 , and the first signal 3 and the first signal 4 may correspond to the second signal 2 .

[0137] In some embodiments, if the number of first signals in the first burst set is less than the number of second signals in the second burst set (i.e., the number of forwarding beams of the third device is less than the number of original beams of the second device), one first signal may correspond to one or more second signals. For example, referring to FIG6C , first signal 1 may correspond to second signal 1 and second signal 2, and first signal 2 may correspond to first signal 2 and second signal 4.

[0138] By defining the above correspondence, beam scanning can be implemented for each forwarding beam in the third device. Specifically, by expanding frequency domain resources, beam scanning can be implemented for each forwarding beam in the third device without increasing latency. In this way, the first device can detect the first signal based on the expanded frequency domain location and, based on the measurement results of the first signal, determine the beam corresponding to the first signal, thereby implementing beam management.

[0139] It should be noted that the above parameters used to determine the first transmission resource (i.e., one or more of the above-mentioned first frequency domain position, first frequency domain offset value, second frequency domain offset value, and BWP corresponding to the second signal) can be predefined or configured by the network device, and the embodiments of the present application do not impose any restrictions on this.

[0140] For example, the second device may send the first configuration information, and correspondingly, the first device may receive the first configuration information. The first configuration information may indicate one or more of the following:

[0141] First frequency domain position;

[0142] a first frequency domain offset value;

[0143] a second frequency domain offset value;

[0144] The bandwidth portion corresponding to the second signal.

[0145] Based on this, the first device may determine the first transmission resource for detecting the first signal based on the first configuration information.

[0146] In some embodiments, the third device may also receive the first configuration information, and determine the first transmission resource for sending the first signal based on the first configuration information.

[0147] It should be noted that the first configuration information can be carried through broadcast signaling, for example, through SIB or MIB.

[0148] It should also be noted that the first configuration information is used to configure the first transmission resource. The first transmission resource is the resource used by the third device to transmit the first signal and may be related to the spatial relationship information of the third device. For example, the number of first signals included in the first burst set in the first configuration information may correspond to the number of forwarding beams of the third device. The number of forwarding beams of the third device may be determined based on the spatial relationship information of the third device.

[0149] Based on this, in an embodiment of the present application, before sending the first configuration information, the second device may further include the following steps:

[0150] The third device sends capability information to the second device; correspondingly, the second device receives the capability information sent by the third device. The capability information is used to indicate spatial relationship information of the third device; and the first configuration information can be determined based on the capability information.

[0151] In some embodiments, the capability information may include one or more of the following:

[0152] the phase of each RIS unit in the third device;

[0153] a beamset of reflected or refracted signals from a third device;

[0154] a beamforming pattern of the reflected or refracted signal of the third device;

[0155] The polarization of the reflected or refracted signal.

[0156] It should be noted that the beam set of the reflected signal or refracted signal of the third device may include different forwarding beam directions (reflection, refraction, etc.) corresponding to different working modes, as well as the number of beams.

[0157] In addition, the beamforming pattern of the reflected signal or refracted signal of the third device can be obtained by adjusting the on or off state of the diode associated with the RIS unit. That is, different on or off patterns of the diode correspond to different beamforming patterns of the RIS reflected signal or refracted signal, thereby corresponding to different RIS operating modes.

[0158] The polarization mode of the reflected signal or the refracted signal of the third device may include horizontal polarization or vertical polarization. Different operating modes correspond to different polarization modes.

[0159] It can be seen that the third device can accurately configure the forwarding beam and the first transmission resource by reporting capability information.

[0160] In an embodiment of the present application, referring to FIG7 , the signal transmission method provided in the embodiment of the present application further includes the following steps:

[0161] S340. The first device sends a third signal based on the target transmission resource associated with the target signal; accordingly, the second device receives the third signal on the target transmission resource;

[0162] The target signal is one or more first signals detected by the first device, and / or a signal that meets the first condition among one or more second signals detected by the first device.

[0163] S350. The second device determines the beam information corresponding to the first device based on the target transmission resources.

[0164] It should be noted that the first condition includes, but is not limited to, the strongest signal quality, or the signal quality meeting a quality threshold. In other words, the target signal may be one or more first signals detected by the first device, and / or, among one or more second signals detected by the first device, the signal with the strongest or relatively strong signal quality (referred to as the target signal in this embodiment of the application).

[0165] It can be understood that different first signals and second signals can correspond to different beam directions. Therefore, the first device can select a target signal with the strongest or stronger channel quality from the first signal and / or second signal that can be detected. In this way, the first device can use the beam corresponding to the target signal as the beam for subsequent communications.

[0166] It should be noted that the first device can detect the first signal forwarded by the third device, and can also detect the second signal directly sent by the second device.

[0167] In some embodiments, when the first device is capable of detecting the second signal, if the measurement results of one or more second signals detected by the first device are greater than or equal to a first threshold, the target signal is the signal that meets the first condition among the one or more second signals detected by the first device.

[0168] It should be understood that, given the physical location relationship between the second device and the first device, the first device may not be able to detect the second signal in some scenarios. If the first device is able to detect the second signal and the measurement result of the detected second signal exceeds the first threshold, the first device may directly select one or more detected second signals as the target signal.

[0169] It should be noted that the measurement results may include one or more of the following measurement parameters: reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), and other parameters. This embodiment of the present application is not limited to this.

[0170] It should also be noted that the first threshold may include multiple values ​​(e.g., a first RSRP threshold, a first RSRQ threshold, a first SINR threshold, etc.), and different first thresholds may correspond to different measurement parameters. The measurement result exceeding the first threshold may be understood as meaning that all measurement parameters exceed the corresponding first threshold, or that any one or several of the measurement parameters exceed the corresponding first threshold, and this embodiment of the present application does not limit this.

[0171] As will be appreciated, when the measurement result of the second signal detected by the first device is above the first threshold, it indicates that there is currently no need for a third device to forward the second signal sent by the second device, and the first device can communicate directly with the second device normally. In this case, the first device can directly select the second signal that meets the first condition from the one or more detected second signals as the target signal. In this way, the first device can use the beam corresponding to the target signal as the beam for direct communication with the second device.

[0172] It should be noted that the first threshold value may be predefined or network-configured. For example, the network device may configure the first threshold value through broadcast signaling (e.g., SIB, MIB, etc.), high-layer signaling (e.g., RRC signaling, MAC CE signaling), or physical layer signaling (e.g., DCI signaling), and the embodiments of the present application do not limit this.

[0173] In some embodiments, when the first device is capable of detecting the second signal, if the measurement results of one or more second signals detected by the first device are greater than or equal to the first threshold, and the measurement results of one or more first signals are greater than or equal to the second threshold, then the target signal is the signal that meets the first condition among the one or more second signals detected by the first device.

[0174] It is understandable that the first device can comprehensively consider the measurement results of the first signal and the measurement results of the second signal to determine whether it can communicate directly with the second device. Among them, when the measurement result of the detected second signal by the first device is greater than the first threshold, and the measurement result of the detected first signal is greater than the second threshold, that is, the detection results of the first signal and the second signal are good, the first device does not need a third device to forward the signal of the second device, and the first device can communicate directly with the second device. In this way, the first device can directly select the second signal that meets the first condition from the one or more detected second signals as the target signal, and use the beam corresponding to the target signal as the beam for direct communication with the second device.

[0175] In some embodiments, when the first device is capable of detecting a second signal, if the measurement results of one or more second signals detected by the first device are less than a first threshold, and the measurement results of one or more first signals detected by the first device are greater than or equal to the second threshold, then the target signal is the signal that meets the first condition among the one or more first signals detected by the first device.

[0176] It is understandable that if the measurement result of the second signal detected by the first device is less than the first threshold, but the measurement result of the first signal detected is greater than the second threshold, it indicates that the channel quality between the first and second devices is poor, while the channel quality between the first and third devices is good. In this case, the first device needs to forward the signal sent by the second device through the third device. The first device can select a first signal that meets the first condition from the one or more detected first signals as the target signal. In this way, the first device can use the beam corresponding to the target signal as the beam for subsequent communications.

[0177] It should be noted that the configuration method of the second threshold can be understood by referring to the configuration method of the first threshold, and for the sake of brevity, it will not be repeated here. Among them, the first threshold and the second threshold can be configured through the same signaling, or can be configured separately through different signaling, and the embodiment of the present application does not limit this.

[0178] It should also be noted that the first threshold and the second threshold can be the same value or different values, and the embodiment of the present application does not limit this.

[0179] It is understandable that the first device can select the target signal with the strongest or relatively strong channel quality from the detectable first signal and / or second signal, and use the beam corresponding to the target signal (including the forwarding beam and the original beam) as the beam for subsequent communication. Furthermore, the first device can notify the second device and the third device of the relevant beam information, so that the second device and the third device can perform subsequent data transmission with the first device based on the beam information.

[0180] It should be noted that in some scenarios, the signal sent by the device cannot explicitly carry information. For example, during the random access process, the random access preamble sequence carried by the PRACH is a sequence signal and cannot explicitly carry information.

[0181] Based on this, in an embodiment of the present application, the first device may use the target transmission resource associated with the selected target signal to implicitly indicate beam information. Specifically, the first device may send a third signal based on the target transmission resource associated with the target signal.

[0182] It should be noted that the third signal may be a PRACH, an uplink signal carrying a CSI report (obtained based on CSI-RS measurement), or other types of signals, and this embodiment of the present application does not impose any restrictions on this.

[0183] In some embodiments, the target transmission resource may include a transmission opportunity and / or a preamble. That is, the first device may implicitly indicate the selected beam information using the transmission opportunity and / or the preamble. For example, if the first signal and the second signal are SSBs, the target transmission resource may include an RO and / or a preamble. If the first signal and the second signal are CSI-RSs, the target transmission resource may include a transmission opportunity for sending a CSI report.

[0184] It should be noted that in the related art, the NR system specifies the mapping relationship between SSB and RO, preamble, or the mapping relationship between CSI-RS and transmission opportunity during the communication process between the network device and the terminal device. In other words, the NR system specifies the mapping relationship between the second signal and the transmission resource during the direct communication process between the first device and the second device when the smart surface device (i.e., the third device) is not introduced.

[0185] Based on this, in an embodiment of the present application, when the target signal is a signal selected by the first device from one or more detected second signals (i.e., in a scenario where the first device and the second device can communicate directly without forwarding by a third device), the first device can determine the transmission resource associated with the selected second signal according to the above mapping relationship to obtain the target transmission resource. In this way, the first device can send a third signal to the second device based on the target transmission resource, implicitly indicating the beam information of the first device through the target transmission resource.

[0186] It should be noted that the mapping relationship between the second signal and the transmission resource can include multiple types. For example, in a scenario where the second signal is an SSB and the transmission resource is an RO, the mapping between the SSB and the RO can be one-to-one, many-to-one, or one-to-many. In scenarios with a small number of users, multiple SSBs can be supported to correspond to the same RO to save PRACH resources; in scenarios with a large number of users, one SSB can be supported to correspond to multiple ROs to provide sufficient PRACH capacity.

[0187] It should be noted that the mapping relationship between the second signal and the transmission resource can be predefined by the protocol or configured by the network, and the embodiments of the present application do not limit this. For example, the first device can determine the transmission resource associated with the second signal based on the access configuration information associated with the second signal. The access configuration information can include one or more of the following:

[0188] Random access configuration index, random access configuration offset, preamble, the number of SSBs mapped to each RACH RO, the number of sequences mapped to each SSB, and the number of ROs frequency-division multiplexed in a time instance.

[0189] It should be noted that the random access here can be a two-step RACH or a four-step RACH, and the embodiment of the present application does not limit this.

[0190] It should also be noted that the random access configuration information can configure the RO set for transmitting the random access sequence (preamble). The random access configuration offset includes changing the random access period and / or random access frame offset, subframe offset, time slot offset, etc. based on the random access configuration index.

[0191] It should also be noted that the access configuration information can be carried through broadcast signaling, such as SIB1, MIB, etc., and the embodiments of the present application do not limit this.

[0192] Based on the foregoing, since the NR system only specifies the mapping relationship between the second signal and the transmission resource, when the target signal is a signal selected by the first device from one or more detected first signals (that is, in a scenario where a third device is required to forward), the target transmission resource associated with the target signal can be determined based on any one of the following:

[0193] Preset rules;

[0194] Second configuration information; wherein the second configuration information is used to configure the transmission resources associated with each first signal;

[0195] The transmission resources associated with the second signal corresponding to the target signal.

[0196] In one possible implementation, when the selected target signal is the first signal forwarded by the third device, the target transmission resource associated with the target signal may be determined based on a preset rule. The preset rule may include:

[0197] The target transmission resource is any transmission resource in the first transmission resource group among multiple transmission resource groups associated with the second signal corresponding to the target signal; the first transmission resource group is the transmission resource group associated with the target signal.

[0198] It should be understood that different first signals may be associated with different transmission resources, and the transmission resources associated with a first signal may be related to the transmission resources associated with a second signal corresponding to the first signal.

[0199] It should be noted that the correspondence between the second signal and the first signal can be understood by referring to the description in the above embodiment, and for the sake of brevity, it will not be repeated here.

[0200] It should be understood that, as mentioned above, the NR system specifies the mapping relationship between SSB and RO, preamble, or the mapping relationship between CSI-RS and transmission opportunity during the communication process between the network device and the terminal device. In other words, the NR system specifies the mapping relationship between the second signal and the transmission resource during the direct communication process between the first device and the second device when the smart surface device (i.e., the third device) is not introduced.

[0201] In some embodiments, the second signal may be associated with multiple transmission resource groups, each of which may be associated with a different forwarding beam. In other words, the multiple transmission resource groups associated with the second signal may be associated with different first signals.

[0202] In one example, different first signals correspond to different transmission timings. Referring to Figure 8, the second signal SSB1 can be associated with two ROs, wherein RO1 can be associated with the first signal 1, and RO2 can be associated with the first signal 2. If the first device detects that the first signal 1 (corresponding to forwarding beam 1) is a signal that meets the first condition, the first device can send PRACH at SSB1+RO corresponding to the first signal 1. Referring to Figure 9, one SSB can be associated with 4 ROs, and the number of ROs frequency-division multiplexed in one time instance is 4. When the number of first signals is 2, every two ROs are associated with one first signal. If the first device detects that the first signal 1 (corresponding to forwarding beam 1) is a signal that meets the first condition, the first device can use either RO2 or RO3 to send PRACH.

[0203] In another example, different first signals correspond to different preambles. If the second signal corresponds to one RO and multiple preambles, the preambles can be grouped. Different first signals correspond to different preamble indices or sets of indices. For example, if one SSB corresponds to 32 preambles, and if q = 2, then forwarding beam 0 corresponds to preamble indices 0 to 15, and forwarding beam 1 corresponds to preamble indices 16 to 31.

[0204] Through this method, the first device only needs to send the third signal on the transmission resource associated with the first signal actually measured to accurately report the beam (including the original beam and the forwarding beam) where the first device is located.

[0205] In another possible implementation, when the selected target signal is a first signal forwarded by a third device, the target transmission resource associated with the target signal may be determined based on the second configuration information, wherein the second configuration information may be used to configure the transmission resource associated with the first signal.

[0206] It can be understood that the network can directly configure associated transmission resources for different first signals.

[0207] Exemplarily, the network device uses k bits to indicate transmission timings or preamble indexes associated with different first signals.

[0208] Exemplarily, if the first signal is SSB, the second configuration information may include one or more of the following:

[0209] Random access configuration index, random access configuration offset, preamble, the number of SSBs mapped to each RACH RO, the number of sequences mapped to each SSB, and the number of ROs frequency-division multiplexed in a time instance.

[0210] It should be noted that the random access here can be a two-step RACH or a four-step RACH, and the embodiment of the present application does not limit this.

[0211] It should also be noted that the random access configuration information can configure the RO set for transmitting the random access sequence (preamble). The random access configuration offset includes changing the random access period and / or random access frame offset, subframe offset, time slot offset, etc. based on the random access configuration index.

[0212] It should also be noted that the access configuration information can be carried through broadcast signaling, such as SIB1, MIB, etc., and the embodiments of the present application do not limit this.

[0213] Through this method, the first device can send a third signal on the transmission resource associated with the first signal actually measured, and accurately report the beam (including the original beam and the forwarding beam) where the first device is located.

[0214] In yet another possible implementation, when the selected target signal is a first signal forwarded by a third device, the target transmission resource associated with the target signal may be a transmission resource associated with a second signal corresponding to the target signal.

[0215] It should be noted that the correspondence between the second signal and the first signal can be understood by referring to the description in the above embodiment, and for the sake of brevity, it will not be repeated here.

[0216] It is understandable that the first device can directly use the transmission resources associated with the second signal corresponding to the target signal to send the third signal. In other words, the first device can directly use the transmission resources associated with the original beam to send the third signal without further distinguishing the transmission resources associated with the first signal, or without further distinguishing the forwarding beam. The beam in which the first device is located is reported using the transmission resources associated with the original beam.

[0217] In some embodiments, the first device may use the transmission resources associated with the second signal corresponding to the target signal to send the third signal N times, where N is the number of candidate first signals in the first burst set corresponding to the first signal.

[0218] Exemplarily, referring to FIG10 , the first device may not further distinguish the RO corresponding to the first signal, and if the number of forwarding beams is N, N PRACHs are sent on the RACH RO associated with the second signal.

[0219] It should be noted that the first device can send the third signal N times according to the transmission resources associated with the second signal corresponding to the target signal, wherein the power of the N third signal transmissions can be the same or different, and the beam direction of the N third signal transmissions can be the same or different.

[0220] Through this method, the first device can use the transmission resources associated with the original beam to send the third signal multiple times, which is equivalent to repeated transmission of the third signal in different beams or the same beam direction, and can increase the probability of successful transmission of the third signal.

[0221] The following uses the initial access scenario as an example to describe in detail the signal transmission method provided in the embodiment of the present application.

[0222] It should be understood that when the terminal device initially accesses the network, the network device periodically sends an SSB burst set in a beam scanning manner, that is, different SSBs are sent on different beams in a time-division multiplexing manner. The terminal device measures the SSB and selects the strongest beam to initiate a random access process. However, since the RIS device adopts a time-division multiplexing analog beam forwarding mode, the available effective RO of the terminal device is when the SSB beam points to the RIS device, and the forwarding beam of the RIS device points to the terminal device, the downlink signal reception of the terminal device is maximized. As shown in Figure 4, the original beam corresponding to the second signal 1 + the forwarding beam corresponding to the first signal 2 can maximize the reception quality. Similarly, the RO associated with the SSB beam also has such requirements. At this time, how the terminal device should determine the resources of SSB and PRACH during the access process is a problem that needs to be solved.

[0223] In this application scenario, the network device can directly send the second SSB burst set (including multiple second SSBs, each corresponding to a different original beam), and the RIS device can forward the second SSB burst set and send the first SSB burst set (including multiple first SSBs, each corresponding to a different forwarding beam) to the terminal device.

[0224] In one embodiment, the period of the first SSB burst set is different from the period of the second SSB burst set.

[0225] If the period of the second SSB burst set is m time units and the number of SSBs included in the first SSB burst set is n, then the maximum period of the first SSB burst set is the product of m and n time units.

[0226] It should be noted that the time unit can be a time slot, a frame, a half frame, a subframe, etc.

[0227] It can be understood that, as shown in Figure 4, the RIS device can first use the beam direction corresponding to forwarding beam 1 to forward the second SSB burst set (i.e., the second burst set in the figure), and then use the beam direction corresponding to forwarding beam 2 to forward the second SSB burst set (i.e., the second burst set in the figure).

[0228] Correspondingly, the terminal device determines whether the finally selected SSB is the SSB corresponding to forwarding beam 1 or the SSB corresponding to forwarding beam 2 by measuring multiple first SSBs and multiple second SSBs.

[0229] It should be noted that the first SSB and / or second SSB can be used for:

[0230] The terminal device obtains timing information (obtains TA value),

[0231] Radio Resource Management (RRM) measurements;

[0232] Radio Link Monitoring (RLM) measurements;

[0233] Beam Failure Detection (BFD) measurements;

[0234] Layer 1 Reference Signal Received Power (L1-RSRP) measurement.

[0235] Through this method, the period of the SSB burst set can be increased to increase the period of the SSB burst set to perform beam scanning of the RIS device forwarding beam, and the terminal device can find one or more SSBs with the strongest quality through measurement.

[0236] In another embodiment, the time domain resources of the first SSB burst set and the second SSB burst set are exactly the same, and the frequency domain resources of the first SSB and the second SSB are different.

[0237] It should be noted that the time domain resources of the first SSB burst set and the second SSB burst set are exactly the same. It can be understood that the time domain resources occupied by the multiple first SSBs in the first SSB burst set are the same as the time domain resources occupied by the multiple second SSBs in the second SSB burst set.

[0238] Optionally, when the number p of first SSBs included in the half frame corresponding to the first SSB burst set is equal to the number q of second SSBs included in the second SSB burst set, the first SSB and the second SSB may correspond one to one.

[0239] Optionally, when the number p of first SSBs (forwarded beams) included in the half frame corresponding to the first SSB burst set is not equal to the number q of second SSBs (original beams) included in the half frame corresponding to the second SSB burst set, for example, when q is less than p, then multiple candidate second SSBs correspond to the same first SSB.

[0240] The frequency domain position of the first SSB burst set may be determined based on one or more of the following:

[0241] First frequency domain position;

[0242] The frequency domain position of the second SSB burst set and the first frequency domain offset value;

[0243] The frequency domain position of the downlink BWP and the second frequency domain offset value;

[0244] The bandwidth part corresponding to the second SSB.

[0245] It should be noted that the above parameters can be configured through the first configuration information.

[0246] It can be understood that the first SSB and the second SSB overlap in the time domain, which will not increase the period of the SSB burst set. Without increasing the access delay, the terminal device can find one or more SSBs with the strongest quality through measurement.

[0247] In an embodiment of the present application, the terminal device can perform measurement using the above-mentioned SSB and send PRACH through the RO associated with the SSB with the best signal quality.

[0248] In one embodiment, the terminal device may send a PRACH based on the RACH RO associated with the first SSB. As shown in FIG9 , the first device may send a PRACH on the RO corresponding to SSB1+forward beam 1.

[0249] It should be noted that the relevant technology only stipulates the association relationship between the second SSB and the RACH RO, but does not make further provisions on how to further distinguish the q first SSBs. The following rules can further distinguish the RACH ROs corresponding to the q first SSBs.

[0250] In one possible implementation, different first SSBs (forwarding beams) correspond to different ROs. For example, if a second SSB corresponds to multiple ROs, each RO can correspond to a different first SSB (i.e., forwarding beam). If a second SSB can be associated with four ROs, and the number of ROs used in a time instance frequency division multiplexing is four, taking the example of a first SSB burst set including two first SSBs, every two ROs can be associated with one first SSB.

[0251] In another possible implementation, different first SSBs (forwarding beams) correspond to different sequences. For example, if the number of ROs corresponding to a second SSB is 1 and there are multiple preambles corresponding to the second SSB, the preambles are grouped, and different first SSBs (forwarding beams) can correspond to different preamble indexes or sets of indexes. For example, the number of preambles corresponding to a second SSB is 32. Taking the example of a first SSB burst set including 2 first SSBs, the preamble index corresponding to one first SSB is 0 to 15, and the preamble index corresponding to the other first SSB is 16 to 31.

[0252] In one embodiment, the network may use k bits to indicate the RO or preamble index corresponding to the first SSB (forward beam).

[0253] Through the above method, the terminal device only needs to send PRACH on the RO corresponding to the forwarding beam actually measured to more accurately report the beam where the terminal device is located.

[0254] In one embodiment, the terminal device may send a PRACH based on the RACH RO associated with the second SSB. As shown in Figure 10, without further distinguishing the RO corresponding to the first SSB, if the number of first SSBs in the first SSB burst set is q (i.e., the number of forwarding beams is q), then q PRACHs are sent on the RACH RO associated with the second SSB.

[0255] The powers of the q PRACH transmissions may be the same or different, and the beam directions of the q PRACH transmissions may be the same or different.

[0256] In this embodiment, the terminal device can send PRACH multiple times, which is equivalent to repeated transmission of PRACH in different beams or the same beam direction, and can improve the probability of successful PRACH transmission.

[0257] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further explain the various possible combinations. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0258] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in 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. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0259] FIG11 is a schematic diagram of the structure of a signal transmission device 1100 provided in an embodiment of the present application, which is applied to a first device. As shown in FIG11 , the signal transmission device 1100 includes:

[0260] The first receiving unit 1101 is configured to detect a first signal based on a first transmission resource; wherein the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by a third device; the second signal is detected on the second transmission resource; the first transmission resource is different from the second transmission resource.

[0261] In some embodiments, the time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource; and / or the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource.

[0262] In some embodiments, the first transmission resource includes a first time period, and the second transmission resource includes a second time period; the first time period is a period of a first burst set corresponding to the first signal, and the second time period is a period of a second burst set corresponding to the second signal;

[0263] The first transmission resource is different from the second transmission resource, including: the first time period is different from the second time period.

[0264] In some embodiments, the first time period is determined based on the second time period and the number of first signals included in the first burst set.

[0265] In some embodiments, the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource; and the frequency domain position of the first transmission resource is determined based on one or more of the following:

[0266] First frequency domain position;

[0267] The frequency domain position of the second transmission resource and the first frequency domain offset value;

[0268] The frequency domain position of the downlink bandwidth part and the second frequency domain offset value;

[0269] The bandwidth portion corresponding to the second signal.

[0270] In some embodiments, the time domain resources of the first transmission resource are the same as the time domain resources of the second transmission resource, and the multiple first signals included in the first burst set corresponding to the first signal have a corresponding relationship with the multiple second signals included in the second burst set corresponding to the second signal.

[0271] In some embodiments, when the number of the plurality of first signals included in the first burst set is the same as the number of the plurality of second signals included in the second burst set, the plurality of first signals correspond one-to-one to the plurality of second signals.

[0272] In some embodiments, when the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with a second signal in the second burst set, or one or more second signals in the second burst set are associated with a first signal in the first burst set.

[0273] In some embodiments, the first receiving unit 1101 is further configured to receive first configuration information, where the first configuration information is used to determine the first transmission resource.

[0274] In some embodiments, the first configuration information indicates one or more of the following:

[0275] the number of the plurality of first signals included in the first burst set corresponding to the first signal;

[0276] a second time period of a second burst set corresponding to the second signal;

[0277] a first frequency domain position of the first transmission resource;

[0278] a first frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource;

[0279] a second frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the downlink bandwidth part;

[0280] The bandwidth portion corresponding to the second signal.

[0281] In some embodiments, the signal transmission apparatus 1100 provided in embodiments of the present application further includes a first transmitting unit. The first transmitting unit can be configured to transmit a third signal based on a target transmission resource associated with a target signal; the target signal being one or more first signals detected by the first device, and / or a signal satisfying the first condition among one or more second signals detected by the first device.

[0282] In some embodiments, when the first device is capable of detecting a second signal, if the measurement results of one or more second signals detected by the first device are greater than or equal to a first threshold, then the target signal is the signal among the one or more second signals detected by the first device that meets the first condition.

[0283] In some embodiments, when the first device is capable of detecting a second signal, if the measurement results of one or more second signals detected by the first device are greater than or equal to a first threshold, and the measurement results of the one or more first signals are greater than or equal to a second threshold, then the target signal is the signal among the one or more second signals detected by the first device that meets the first condition.

[0284] In some embodiments, when the first device is capable of detecting a second signal, if the measurement results of one or more second signals detected by the first device are less than a first threshold, and the measurement results of one or more first signals detected by the first device are greater than or equal to the second threshold, then the target signal is the signal among the one or more first signals detected by the first device that meets the first condition.

[0285] In some embodiments, when the target signal is any first signal of one or more first signals detected by the first device, the target transmission resource is determined based on any one of the following:

[0286] Preset rules;

[0287] Second configuration information; the second configuration information is used to configure the transmission resources associated with each of the one or more first signals;

[0288] transmission resources associated with a second signal corresponding to the target signal.

[0289] In some embodiments, the preset rules include:

[0290] The target transmission resource is any transmission resource in a first transmission resource group among multiple transmission resource groups associated with the second signal corresponding to the target signal; the first transmission resource group is the transmission resource group associated with the target signal.

[0291] In some embodiments, when the target transmission resource is a transmission resource associated with a second signal corresponding to the target signal, the first sending unit is further configured to send a third signal N times based on the target transmission resource; N is the number of candidate first signals in the first burst set corresponding to the first signal.

[0292] In some embodiments, the target transmission resource includes a transmission opportunity and / or a preamble sequence.

[0293] In some embodiments, the first signal and the second signal are any one of the following:

[0294] Synchronization signal block SSB, channel state information reference signal CSI-RS.

[0295] FIG12 is a schematic diagram of the structure of a signal transmission device 1200 provided in an embodiment of the present application, which is applied to a second device. As shown in FIG12 , the signal transmission device 1200 includes:

[0296] The second sending unit 1201 is configured to send a second signal on a second transmission resource; the second transmission resource is different from the first transmission resource, the first transmission resource is used to transmit a first signal, and the first signal is a signal sent after the second signal is reflected and / or refracted by a third device.

[0297] In some embodiments, the time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource; and / or the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource.

[0298] In some embodiments, the first transmission resource includes a first time period, and the second transmission resource includes a second time period; the first time period is a period of a first burst set corresponding to the first signal, and the second time period is a period of a second burst set corresponding to the second signal;

[0299] The first transmission resource is different from the second transmission resource, including: the first time period is different from the second time period.

[0300] In some embodiments, the first time period is determined based on the second time period and the number of first signals included in the first burst set.

[0301] In some embodiments, the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource; the frequency domain resource of the first transmission resource is determined based on one or more of the following:

[0302] First frequency domain position;

[0303] The frequency domain position of the second transmission resource and the first frequency domain offset value;

[0304] The frequency domain position of the downlink bandwidth part and the second frequency domain offset value;

[0305] The bandwidth portion corresponding to the second signal.

[0306] In some embodiments, the time domain resources of the first transmission resource are the same as the time domain resources of the second transmission resource, and the multiple first signals included in the first burst set corresponding to the first signal have a corresponding relationship with the multiple second signals included in the second burst set corresponding to the second signal.

[0307] In some embodiments, when the number of the plurality of first signals included in the first burst set is the same as the number of the plurality of second signals included in the second burst set, the plurality of first signals correspond one-to-one to the plurality of second signals.

[0308] In some embodiments, when the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with a second signal in the second burst set, or one or more second signals in the second burst set are associated with a first signal in the first burst set.

[0309] In some embodiments, the second sending unit 1201 is further configured to send first configuration information to the first device; the first configuration information is used to determine the first transmission resource.

[0310] In some embodiments, the first configuration information indicates one or more of the following:

[0311] the number of the plurality of first signals included in the first burst set corresponding to the first signal;

[0312] a second time period of a second burst set corresponding to the second signal;

[0313] a first frequency domain position of the first transmission resource;

[0314] a first frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource;

[0315] a second frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the downlink bandwidth part;

[0316] The bandwidth portion corresponding to the second signal.

[0317] In some embodiments, the signal transmission apparatus 1200 further includes a second receiving unit configured to receive capability information sent by the third device, wherein the capability information indicates spatial relationship information of the third device, and the first configuration information is determined based on the capability information.

[0318] In some embodiments, the capability information includes one or more of the following:

[0319] a phase of each RIS unit in the third device;

[0320] a beam set of reflected signals or refracted signals of the third device;

[0321] a beamforming pattern of the reflected signal or the refracted signal of the third device;

[0322] The polarization mode of the reflected signal or the refracted signal.

[0323] In some embodiments, the second receiving unit is further configured to receive a third signal sent by the first device; the third signal is received on a target transmission resource; and the second device determines beam information corresponding to the first device based on the target transmission resource.

[0324] In some embodiments, the first signal and the second signal are any one of the following:

[0325] Synchronization signal block SSB, channel state information reference signal CSI-RS.

[0326] FIG13 is a schematic diagram of the structure of a signal transmission device 1300 provided in an embodiment of the present application, which is applied to a third device. As shown in FIG13 , the signal transmission device 1300 includes:

[0327] The third sending unit 1301 is configured to send a first signal on a first transmission resource, where the first signal is a signal transmitted after the second signal sent by the second device is reflected and / or refracted by the third device; the second signal is detected on the second transmission resource; the first transmission resource is different from the second transmission resource.

[0328] In some embodiments, the time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource; and / or,

[0329] The frequency domain resources of the first transmission resources are different from the frequency domain resources of the second transmission resources.

[0330] In some embodiments, the first transmission resource includes a first time period, and the second transmission resource includes a second time period; the first time period is a period of a first burst set corresponding to the first signal, and the second time period is a period of a second burst set corresponding to the second signal;

[0331] The first transmission resource is different from the second transmission resource, including: the first time period is different from the second time period.

[0332] In some embodiments, the first time period is determined based on the second time period and the number of first signals included in the first burst set.

[0333] In some embodiments, the frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource; and the frequency domain position of the first transmission resource is determined based on one or more of the following:

[0334] First frequency domain position;

[0335] The frequency domain position of the second transmission resource and the first frequency domain offset value;

[0336] The frequency domain position of the downlink bandwidth part and the second frequency domain offset value;

[0337] The bandwidth portion corresponding to the second signal.

[0338] In some embodiments, the time domain resources of the first transmission resource are the same as the time domain resources of the second transmission resource, and the multiple first signals included in the first burst set corresponding to the first signal have a corresponding relationship with the multiple second signals included in the second burst set corresponding to the second signal.

[0339] In some embodiments, when the number of the plurality of first signals included in the first burst set is the same as the number of the plurality of second signals included in the second burst set, the plurality of first signals correspond one-to-one to the plurality of second signals.

[0340] In some embodiments, when the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with a second signal in the second burst set, or one or more second signals in the second burst set are associated with a first signal in the first burst set.

[0341] In some embodiments, the signal transmission device 1300 further includes a third receiving unit configured to receive first configuration information, where the first configuration information is used to determine the first transmission resource.

[0342] In some embodiments, the first configuration information indicates one or more of the following:

[0343] the number of the plurality of first signals included in the first burst set corresponding to the first signal;

[0344] a second time period of a second burst set corresponding to the second signal;

[0345] a first frequency domain position of the first transmission resource;

[0346] a first frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource;

[0347] a second frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the downlink bandwidth part;

[0348] The bandwidth portion corresponding to the second signal.

[0349] In some embodiments, the third sending unit 1301 is further configured to send capability information to the second device; the capability information is used to indicate spatial relationship information of the third device; and the first configuration information is determined based on the capability information.

[0350] In some embodiments, the capability information includes one or more of the following:

[0351] a phase of each RIS unit in the third device;

[0352] a beam set of reflected signals or refracted signals of the third device;

[0353] a beamforming pattern of the reflected signal or the refracted signal of the third device;

[0354] The polarization mode of the reflected signal or the refracted signal.

[0355] In some embodiments, the first signal and the second signal are any one of the following:

[0356] Synchronization signal block SSB, channel state information reference signal CSI-RS.

[0357] Those skilled in the art should understand that the relevant description of the above-mentioned information transmission device in the embodiment of the present application can be understood with reference to the relevant description of the information transmission method in the embodiment of the present application.

[0358] Figure 14 is a schematic diagram of a communication device 1400 provided in an embodiment of the present application. The communication device can be a terminal device or a network device. The communication device 1400 shown in Figure 14 includes a processor 1410, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0359] Optionally, as shown in FIG14 , the communication device 1400 may further include a memory 1420. The processor 1410 may call and execute a computer program from the memory 1420 to implement the method in the embodiment of the present application.

[0360] The memory 1420 may be a separate device independent of the processor 1410 , or may be integrated into the processor 1010 .

[0361] Optionally, as shown in FIG14 , the communication device 1400 may further include a transceiver 1430 , and the processor 1410 may control the transceiver 1430 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0362] The transceiver 1430 may include a transmitter and a receiver. The transceiver 1430 may further include an antenna, and the number of antennas may be one or more.

[0363] Optionally, the communication device 1400 may specifically be the first device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0364] Optionally, the communication device 1400 may specifically be the second device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the second device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0365] Optionally, the communication device 1400 may specifically be the third device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the third device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0366] Figure 15 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1500 shown in Figure 15 includes a processor 1510, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0367] Optionally, as shown in FIG15 , the chip 1500 may further include a memory 1520. The processor 1510 may call and execute a computer program from the memory 1520 to implement the method in the embodiment of the present application.

[0368] The memory 1520 may be a separate device independent of the processor 1510 , or may be integrated into the processor 1510 .

[0369] Optionally, the chip 1500 may further include an input interface 1530. The processor 1510 may control the input interface 1530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0370] Optionally, the chip 1500 may further include an output interface 1540. The processor 1510 may control the output interface 1540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0371] Optionally, the chip can be applied to the first device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0372] Optionally, the chip can be applied to the second device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the second device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0373] Optionally, the chip can be applied to the third device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the third device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0374] 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.

[0375] An embodiment of the present application further provides a computer storage medium, which stores one or more programs. The one or more programs can be executed by one or more processors to implement the method in the embodiment of the present application.

[0376] FIG16 is a schematic block diagram of a communication system 1600 provided in an embodiment of the present application. As shown in FIG16 , the communication system 1600 includes a first device 1610 , a second device 1620 , and a third device 1630 .

[0377] Among them, the first device 1610 can be used to implement the corresponding functions implemented by the first device in the above method, and the second device 1620 can be used to implement the corresponding functions implemented by the second device in the above method, and the third device 1630 can be used to implement the corresponding functions implemented by the third device in the above method. For the sake of brevity, they will not be repeated here.

[0378] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0379] It is 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 RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0380] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0381] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0382] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0383] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0384] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0385] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0386] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0387] The embodiment of the present application also provides a computer program.

[0388] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0389] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0390] Those skilled 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 beyond the scope of this application.

[0391] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0392] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0393] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0394] 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.

[0395] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0396] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A signal transmission method, the method comprising: A first device detecting a first signal based on a first transmission resource; wherein, the first signal is a signal transmitted by a second device after being reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; the first transmission resource is different from the second transmission resource.

2. The method according to claim 1, wherein The time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource; and / or, The frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource.

3. The method according to claim 1 or 2, wherein The first transmission resource includes a first time period, and the second transmission resource includes a second time period; the first time period is the period of a first burst set corresponding to the first signal, and the second time period is the period of a second burst set corresponding to the second signal; The first transmission resource being different from the second transmission resource includes: the first time period being different from the second time period.

4. The method according to claim 3, wherein, The first time period is determined based on the second time period and the number of first signals included in the first burst set.

5. The method according to any one of claims 1-4, wherein, The frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource; the frequency domain position of the first transmission resource is determined based on one or more of the following: A first frequency domain position; The frequency domain position of the second transmission resource and a first frequency domain offset value; The frequency domain position of a downlink bandwidth part and a second frequency domain offset value; The bandwidth part corresponding to the second signal.

6. The method according to claim 5, wherein, The time domain resource of the first transmission resource is the same as the time domain resource of the second transmission resource, and multiple first signals included in a first burst set corresponding to the first signal have a corresponding relationship with multiple second signals included in a second burst set corresponding to the second signal.

7. The method according to claim 6, wherein, When the number of multiple first signals included in the first burst set is the same as the number of multiple second signals included in the second burst set, the multiple first signals and the multiple second signals are in one-to-one correspondence.

8. The method according to claim 6, wherein, When the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with one second signal in the second burst set, or one or more second signals in the second burst set are associated with one first signal in the first burst set.

9. The method according to any one of claims 1-8, wherein, Further comprising: The first device receiving first configuration information, the first configuration information being used to determine the first transmission resource.

10. The method according to claim 9, wherein, The first configuration information indicates one or more of the following: The number of multiple first signals included in a first burst set corresponding to the first signal; The second time period of a second burst set corresponding to the second signal; The first frequency domain position of the first transmission resource; A first frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource; A second frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of a downlink bandwidth part; The bandwidth part corresponding to the second signal.

11. According to the method according to any one of claims 1-10, wherein, Further comprising: The first device sends a third signal based on the target transmission resource associated with the target signal; The target signal is one or more first signals detected by the first device, and / or a signal that meets the first condition among one or more second signals detected by the first device.

12. The method according to claim 11, wherein, When the first device is capable of detecting a second signal, if the measurement result of one or more second signals detected by the first device is greater than or equal to a first threshold, the target signal is a signal that meets the first condition among the one or more second signals detected by the first device.

13. The method according to claim 11, wherein When the first device is capable of detecting a second signal, if the measurement result of one or more second signals detected by the first device is greater than or equal to a first threshold, and the measurement result of the one or more first signals is greater than or equal to a second threshold, the target signal is a signal that meets the first condition among the one or more second signals detected by the first device.

14. The method according to any one of claims 11 - 13, wherein, When the first device is capable of detecting a second signal, if the measurement result of one or more second signals detected by the first device is less than the first threshold, and the measurement result of the one or more first signals detected by the first device is greater than or equal to the second threshold, the target signal is a signal that meets the first condition among the one or more first signals detected by the first device.

15. The method according to any one of claims 11 - 14, wherein, When the target signal is any one of the one or more first signals detected by the first device, the target transmission resource is determined based on any one of the following: A preset rule; Second configuration information; the second configuration information is used to configure the transmission resources respectively associated with each of the one or more first signals; The transmission resource associated with the second signal corresponding to the target signal.

16. The method according to claim 15, wherein, The preset rule includes: The target transmission resource is any transmission resource within a first transmission resource group among multiple transmission resource groups associated with the second signal corresponding to the target signal; the first transmission resource group is the transmission resource group associated with the target signal.

17. The method according to claim 15, wherein, When the target transmission resource is the transmission resource associated with the second signal corresponding to the target signal, the first device sends a third signal based on the target transmission resource associated with the target signal, including: The first device sends the third signal N times based on the target transmission resource; N is the number of candidate first signals in the first burst set corresponding to the first signal.

18. The method according to any one of claims 11-17, wherein, The target transmission resource includes a transmission occasion and / or a preamble sequence.

19. The method according to any one of claims 1-18, wherein, The first signal and the second signal are any one of the following: Synchronization signal block SSB, channel state information reference signal CSI-RS.

20. A signal transmission method, the method includes: The second device sends a second signal on a second transmission resource; The second transmission resource is different from the first transmission resource. The first transmission resource is used to transmit a first signal, and the first signal is a signal sent after the second signal is reflected and / or refracted by a third device.

21. The method according to claim 20, wherein, The time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource; and / or, The frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource.

22. The method according to claim 20 or 21, wherein, The first transmission resource includes a first time period, and the second transmission resource includes a second time period; the first time period is the period of a first burst set corresponding to the first signal, and the second time period is the period of a second burst set corresponding to the second signal; The first transmission resource is different from the second transmission resource, including: the first time period is different from the second time period.

23. The method according to claim 22, wherein The first time period is determined based on the second time period and the number of first signals included in the first burst set.

24. The method according to any one of claims 20-23, wherein, The frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource; the frequency domain resource of the first transmission resource is determined based on one or more of the following: A first frequency domain position; The frequency domain position of the second transmission resource and a first frequency domain offset value; The frequency domain position of the downlink bandwidth part and a second frequency domain offset value; The bandwidth part corresponding to the second signal.

25. The method according to claim 24, wherein, The time domain resource of the first transmission resource is the same as the time domain resource of the second transmission resource, and there is a corresponding relationship between the multiple first signals included in the first burst set corresponding to the first signal and the multiple second signals included in the second burst set corresponding to the second signal.

26. The method according to claim 25, wherein When the number of multiple first signals included in the first burst set is the same as the number of multiple second signals included in the second burst set, the multiple first signals and the multiple second signals are in one-to-one correspondence.

27. The method according to claim 25, wherein, When the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with one second signal in the second burst set, or one or more second signals in the second burst set are associated with one first signal in the first burst set.

28. The method according to any one of claims 20 - 27, wherein, Further included: The second device sends first configuration information to the first device; The first configuration information is used to determine the first transmission resource.

29. The method according to claim 28, wherein The first configuration information indicates one or more of the following: The number of multiple first signals included in the first burst set corresponding to the first signal; The second time period of the second burst set corresponding to the second signal; The first frequency domain position of the first transmission resource; The first frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource; The second frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the downlink bandwidth part; The bandwidth part corresponding to the second signal.

30. The method according to any one of claims 28 or 29, wherein Further included: The second device receives the capability information sent by the third device; The capability information is used to indicate the spatial relationship information of the third device; The first configuration information is determined based on the capability information.

31. The method according to claim 30, wherein, The ability information includes one or more of the following: The phase of each RIS unit in the third device; The beam set of the reflected signal or refracted signal of the third device; The beamforming mode of the reflected signal or refracted signal of the third device; The polarization mode of the reflected signal or the refracted signal.

32. The method according to any one of claims 20-31, wherein, It further includes: The second device receives the third signal sent by the first device; The third signal is received on the target transmission resource; The second device determines the beam information corresponding to the first device based on the target transmission resource.

33. The method according to any one of claims 20-32, wherein, The first signal and the second signal are any one of the following: Synchronization signal block SSB, channel state information reference signal CSI-RS.

34. A signal transmission method, the method includes: The third device sends a first signal on a first transmission resource, where the first signal is a signal transmitted after being reflected and / or refracted by the third device from the second signal sent by the second device; the second signal is detected on a second transmission resource; the first transmission resource is different from the second transmission resource.

35. The method according to claim 34, wherein, The time domain resource of the first transmission resource is different from the time domain resource of the second transmission resource; and / or, The frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource.

36. The method according to claim 35, wherein, The first transmission resource includes a first time period, and the second transmission resource includes a second time period; the first time period is the period of the first burst set corresponding to the first signal, and the second time period is the period of the second burst set corresponding to the second signal; The first transmission resource is different from the second transmission resource, including: the first time period is different from the second time period.

37. The method according to claim 36, wherein, The first time period is determined based on the second time period and the number of first signals included in the first burst set.

38. The method according to any one of claims 34 - 37, wherein, The frequency domain resource of the first transmission resource is different from the frequency domain resource of the second transmission resource; the frequency domain position of the first transmission resource is determined based on one or more of the following: The first frequency domain position; The frequency domain position of the second transmission resource and the first frequency domain offset value; The frequency domain position of the downlink bandwidth part and the second frequency domain offset value; The bandwidth part corresponding to the second signal.

39. The method according to claim 38, wherein, The time domain resource of the first transmission resource is the same as the time domain resource of the second transmission resource, and there is a corresponding relationship between the multiple first signals included in the first burst set corresponding to the first signal and the multiple second signals included in the second burst set corresponding to the second signal.

40. The method according to claim 39, wherein, When the number of multiple first signals included in the first burst set is the same as the number of multiple second signals included in the second burst set, the multiple first signals and the multiple second signals are in one-to-one correspondence.

41. The method according to claim 39, wherein, When the number of multiple first signals included in the first burst set is different from the number of multiple second signals included in the second burst set, one or more first signals in the first burst set are associated with one second signal in the second burst set, or one or more second signals in the second burst set are associated with one first signal in the first burst set.

42. The method according to any one of claims 34-41, wherein, the third device receives first configuration information for determining the first transmission resource.

43. The method according to claim 42, wherein, The first configuration information indicates one or more of the following: the number of a plurality of first signals included in a first burst set corresponding to the first signal; a second time period of a second burst set corresponding to the second signal; a first frequency domain position of the first transmission resource; a first frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of the second transmission resource; a second frequency domain offset value between the frequency domain position of the first transmission resource and the frequency domain position of a downlink bandwidth part; a bandwidth part corresponding to the second signal.

44. The method according to claim 42 or 43, wherein Further included: the third device sends capability information to the second device; the capability information is used to indicate spatial relationship information of the third device; the first configuration information is determined based on the capability information.

45. The method according to claim 44, wherein, The capability information includes one or more of the following: the phase of each RIS unit in the third device; a beam set of a reflected signal or a refracted signal of the third device; a beamforming mode of a reflected signal or a refracted signal of the third device; a polarization mode of the reflected signal or the refracted signal.

46. The method according to any one of claims 34 - 45, wherein, The first signal and the second signal are any one of the following: a synchronization signal block SSB, a channel state information reference signal CSI-RS.

47. A signal transmission apparatus applied to a first device, the signal transmission apparatus includes: a first receiving unit configured to detect a first signal based on a first transmission resource; wherein, the first signal is a signal transmitted after a second signal sent by a second device is reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; the first transmission resource is different from the second transmission resource.

48. A signal transmission apparatus applied to a second device, the signal transmission apparatus includes: a second sending unit configured to send a second signal on a second transmission resource; the second transmission resource is different from the first transmission resource, the first transmission resource is used to transmit a first signal, and the first signal is a signal sent after the second signal is reflected and / or refracted by a third device.

49. A signal transmission apparatus applied to a third device, the signal transmission apparatus includes: a third sending unit configured to send a first signal on a first transmission resource, the first signal is a signal transmitted after a second signal sent by a second device is reflected and / or refracted by a third device; the second signal is detected on a second transmission resource; the first transmission resource is different from the second transmission resource.

50. A communication device, comprising: a memory, a processor and a transceiver, the transceiver is used to implement communication with a network device; the memory stores a computer program that can run on the processor, when the processor executes the program in combination with the transceiver, the method according to any one of claims 1 to 19, or claims 20 to 33, or claims 34 to 46 is implemented.

51. A computer storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the method according to any one of claims 1 to 19, or claims 20 to 33, or claims 34 to 46.

52. A chip, comprising: A processor is configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 19, or claims 20 to 33, or claims 34 to 46.

53. A computer program product includes a computer storage medium that stores a computer program. The computer program includes instructions executable by at least one processor. When the instructions are executed by the at least one processor, the method according to any one of claims 1 to 19, or claims 20 to 33, or claims 34 to 46 is implemented.

54. A computer program causes a computer to execute the method according to any one of claims 1 to 19, or claims 20 to 33, or claims 34 to 46.

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