Method and apparatus for wireless communication

Abstract

A method and apparatus for a first node used for wireless communication are provided. The method includes receiving one or more first type synchronization signal blocks, any of the one or more first type synchronization signal blocks including first information; an index of any of the one or more first type synchronization signal blocks being one of a plurality of candidate synchronization signal block indexes; transmitting one or more second type synchronization signal blocks, any of the one or more second type synchronization signal blocks including the first information; an index of any of the one or more second type synchronization signal blocks being one of the plurality of candidate synchronization signal block indexes, at least one of the one or more second type synchronization signal blocks being different from any of the one or more first type synchronization signal blocks.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a method and apparatus for a node used in wireless communication. Background Technology

[0002] With the trends of network densification and millimeter wave (mmW) communication applications, new types of network nodes have been proposed to improve network coverage and support the rapidly growing number of users. These new network nodes can increase the flexibility of network deployment, and have thus attracted increasing attention.

[0003] For example, some communication systems introduce relay nodes that can amplify and forward communication signals between user equipment (UE) and base stations. Such relay nodes can be, for example, network-controlled repeaters (NCRs).

[0004] To improve the coverage performance of synchronization blocks, base stations may transmit multiple synchronization blocks using beam scanning. In typical scenarios with relay nodes, when a base station transmits multiple synchronization blocks using beam scanning, the relay node may only be within the coverage area of ​​a portion of the beam transmitted by the base station. Therefore, the relay node can only forward a portion of the synchronization blocks, thus affecting its coverage area or increasing its power consumption. This is detrimental to user equipment maintaining system synchronization, beam measurement, and mobility management, and reduces the probability of user equipment successfully accessing the communication system. Summary of the Invention

[0005] This application provides a method and apparatus for using nodes in wireless communication to improve the working efficiency of communication systems.

[0006] In a first aspect, a method for a first node used in wireless communication is provided, comprising: receiving one or more first-type synchronization signal blocks, any one of the one or more first-type synchronization signal blocks including first information; the index of any one of the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indices; transmitting one or more second-type synchronization signal blocks, any one of the one or more second-type synchronization signal blocks including the first information; the index of any one of the one or more second-type synchronization signal blocks being one of the plurality of candidate synchronization signal block indices; and at least one of the one or more second-type synchronization signal blocks being different from any one of the one or more first-type synchronization signal blocks.

[0007] In one implementation, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0008] In one implementation, any one of the first type of synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indices of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0009] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of physical broadcast channels (PBCHs), each PBCH carrying a plurality of demodulation reference signals (DMRSs), and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indices of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0010] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, each PBCH carries a plurality of DMRSs, each PBCH includes a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any PBCH of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks.

[0011] In one implementation, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0012] As one implementation, the method further includes: receiving first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0013] In one implementation, the method further includes: receiving second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks, or the second configuration information is used to determine the one or more second-type synchronization signal blocks.

[0014] In one implementation, the second configuration information is configured by side control information (SCI), or the second configuration information is configured by operation administration and maintenance (OAM).

[0015] In one implementation, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0016] As one implementation, the method further includes: receiving a first signaling; wherein the first signaling is transmitted on a third link, and the first signaling is used to determine the one or more first-type synchronization signal blocks.

[0017] In one implementation, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of which is used to transmit signals on the first link.

[0018] In one implementation, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0019] In a second aspect, a method for a second node used in wireless communication is provided, comprising: transmitting one or more first-type synchronization signal blocks, any one of the one or more first-type synchronization signal blocks including first information; the index of any one of the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indices; wherein the one or more first-type synchronization signal blocks are used to trigger a first node to transmit one or more second-type synchronization signal blocks, any one of the one or more second-type synchronization signal blocks including the first information; the index of any one of the one or more second-type synchronization signal blocks being one of the plurality of candidate synchronization signal block indices; and at least one of the one or more second-type synchronization signal blocks being different from any one of the one or more first-type synchronization signal blocks.

[0020] In one implementation, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0021] In one implementation, any one of the first type of synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indices of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0022] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indexes of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0023] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, each PBCH carries a plurality of DMRSs, each PBCH includes a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any PBCH of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks.

[0024] In one implementation, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0025] As one implementation, the method further includes: sending first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0026] As one implementation, the method further includes: sending second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks.

[0027] In one implementation, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0028] In one implementation, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0029] As one implementation, the method further includes: sending a first signaling; wherein the first signaling is transmitted on a third link, and the first signaling is used to determine the one or more first-type synchronization signal blocks.

[0030] In one implementation, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of which is used to transmit signals on the first link.

[0031] In one implementation, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0032] Thirdly, a node for wireless communication is provided, the node being a first node, the first node comprising: a first receiving module, configured to receive one or more first-type synchronization signal blocks, any one of the one or more first-type synchronization signal blocks including first information; the index of any one of the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indices; and a first transmitting module, configured to transmit one or more second-type synchronization signal blocks, any one of the one or more second-type synchronization signal blocks including the first information; the index of any one of the one or more second-type synchronization signal blocks being one of the plurality of candidate synchronization signal block indices, and at least one of the one or more second-type synchronization signal blocks being different from any one of the one or more first-type synchronization signal blocks.

[0033] In one implementation, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0034] In one implementation, any one of the first type of synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indices of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0035] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indexes of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0036] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, each PBCH carries a plurality of DMRSs, each PBCH includes a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any PBCH of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks.

[0037] In one implementation, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0038] In one implementation, the first node further includes: a second receiving module, used to receive first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0039] In one implementation, the first node further includes: a third receiving module, configured to receive second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks.

[0040] In one implementation, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0041] In one implementation, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0042] In one implementation, the first node includes: a fourth receiving module for receiving a first signaling; wherein the first signaling is transmitted on a third link and is used to determine the one or more first-type synchronization signal blocks.

[0043] In one implementation, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of which is used to transmit signals on the first link.

[0044] In one implementation, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0045] Fourthly, a node for wireless communication is provided, the node being a second node, the second node comprising: a first transmitting module, configured to transmit one or more first-type synchronization signal blocks, any one of the one or more first-type synchronization signal blocks including first information; the index of any one of the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indices; wherein the one or more first-type synchronization signal blocks are used to trigger the first node to transmit one or more second-type synchronization signal blocks, any one of the one or more second-type synchronization signal blocks including the first information; the index of any one of the one or more second-type synchronization signal blocks being one of the plurality of candidate synchronization signal block indices, and at least one of the one or more second-type synchronization signal blocks being different from any one of the one or more first-type synchronization signal blocks.

[0046] In one implementation, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0047] In one implementation, any one of the first type of synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indices of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0048] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indexes of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0049] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, each PBCH carries a plurality of DMRSs, each PBCH includes a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any PBCH of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks.

[0050] In one implementation, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0051] As one implementation, the second node further includes: a second sending module, used to send first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0052] In one implementation, the second node further includes: a third sending module, used to send second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks.

[0053] In one implementation, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0054] In one implementation, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0055] In one implementation, the second node includes: a fourth transmitting module for transmitting a first signaling; wherein the first signaling is transmitted on a third link and is used to determine the one or more first-type synchronization signal blocks.

[0056] In one implementation, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of which is used to transmit signals on the first link.

[0057] In one implementation, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0058] Fifthly, a node for wireless communication is provided, comprising a transceiver, a memory, and a processor, wherein the memory stores a program, the processor invokes the program in the memory, and controls the transceiver to receive or transmit signals to cause the node to perform the method as described in either the first or second aspect.

[0059] A sixth aspect provides an apparatus including a processor for calling a program from a memory to cause the apparatus to perform the method as described in either the first or second aspect.

[0060] A seventh aspect provides a chip including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in either the first or second aspect.

[0061] Eighthly, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method as described in any implementation of the first or second aspect.

[0062] Ninth aspect, a computer program product is provided, including a program that causes a computer to perform the method as described in any implementation of the first or second aspect.

[0063] In a tenth aspect, a computer program is provided that causes a computer to perform the method as described in any implementation of the first or second aspect.

[0064] In this embodiment, the first node acting as a relay does not simply forward one or more received first-type synchronization signal blocks, but forwards one or more second-type synchronization signal blocks that are different from the one or more first-type synchronization signal blocks, thereby improving the working efficiency of the communication system.

[0065] The method for using nodes in wireless communication provided in this application is beneficial for improving the coverage of relay nodes.

[0066] The method for nodes used in wireless communication provided in this application embodiment is beneficial for reducing the power consumption of relay nodes.

[0067] The method for nodes used in wireless communication provided in the embodiments of this application is beneficial for user equipment to maintain system synchronization, beam measurement, and mobility management.

[0068] The method for nodes used in wireless communication provided in this application embodiment is beneficial to increasing the probability of user equipment successfully accessing the communication system. Attached Figure Description

[0069] Figure 1 This is a system architecture example diagram of a wireless communication system to which embodiments of this application can be applied.

[0070] Figure 2 This is a schematic diagram of the NCR structure.

[0071] Figure 3 This is an example diagram of a possible signal forwarding method for NCR.

[0072] Figure 4 This is an example diagram of another possible signal forwarding method for NCR.

[0073] Figure 5 This is a flowchart illustrating a method for a first node used in wireless communication according to an embodiment of this application.

[0074] Figure 6 This is a flowchart illustrating a method for a first node used in wireless communication, provided in another embodiment of this application.

[0075] Figure 7 This is a flowchart illustrating a method for a first node used in wireless communication, provided in another embodiment of this application.

[0076] Figure 8 This is a flowchart illustrating a method for a first node used in wireless communication, provided in another embodiment of this application.

[0077] Figure 9 This is a flowchart illustrating a method for a first node used in wireless communication, provided in another embodiment of this application.

[0078] Figure 10 This is an example diagram of a possible signal forwarding method for NCR provided in the embodiments of this application.

[0079] Figure 11 This is a schematic diagram of the structure of a node used for wireless communication according to an embodiment of this application.

[0080] Figure 12 This is a schematic diagram of the structure of a node used for wireless communication provided in another embodiment of this application.

[0081] Figure 13 This is a schematic structural diagram of the device according to an embodiment of this application.

[0082] Figure 14 This is a schematic diagram of the hardware module of the communication device provided in an embodiment of this application. Detailed Implementation

[0083] Communication system architecture

[0084] Figure 1 This is a system architecture example diagram of a wireless communication system 100 applicable to embodiments of this application. The wireless communication system 100 may include a network device 110 and a user equipment 120. The network device 110 may be a device that communicates with the user equipment 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the user equipment 120 located within that coverage area.

[0085] Figure 1 An exemplary network device and a user device are illustrated. Optionally, the wireless communication system 100 may include one or more network devices 110 and / or one or more user devices 120. For a network device 110, the one or more user devices 120 may all be located within the network coverage area of ​​the network device 110, or all may be located outside the network coverage area of ​​the network device 110, or some may be located within the coverage area of ​​the network device 110 and others outside the network coverage area. This application embodiment does not limit this.

[0086] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0087] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, etc.

[0088] The user equipment in the embodiments of this application can also be referred to as terminal equipment, access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal equipment, mobile device, user terminal, wireless communication equipment, user agent, or user device. The user equipment in the embodiments of this application can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as handheld devices with wireless connectivity, in-vehicle devices, etc. The user equipment in the embodiments of this application can be a mobile phone, tablet computer, laptop computer, PDA, mobile internet device (MID), wearable device, vehicle, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. For example, a user equipment (UE) can act as a dispatching entity, providing sidelink signaling between UEs in vehicle-to-everything (V2X) or device-to-device (D2D) communications. For instance, cellular phones and cars communicate with each other using sidelink signaling. Cellular phones and smart home devices communicate without relaying communication signals through base stations. Optionally, the UE can be used to act as a base station.

[0089] The network device in this application embodiment can be a device for communicating with user equipment. This network device can also be called an access network device or a radio access network device, such as a base station. The network device in this application embodiment can refer to a radio access network (RAN) node (or device) that connects user equipment to a wireless network. The term "base station" can broadly encompass various names as follows, or be replaced by names such as: Node B, evolved base station.

[0090] Evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), device-to-device (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0091] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0092] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0093] Network equipment and user equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network equipment and user equipment are located.

[0094] New types of network nodes in communication systems

[0095] With the trend towards network densification and millimeter-wave communication applications, new types of network nodes have been proposed to improve network coverage and support the rapidly growing number of users. These new network nodes can increase the flexibility of network deployment, and have therefore attracted increasing attention.

[0096] For example, NR Rel-16 (release-16) introduced the integrated access and backhaul (IAB) node. This IAB node was further enhanced in NR Rel-17 (release-17). The most significant feature of this IAB node is that it eliminates the need for wired backhaul links between network nodes.

[0097] For example, wireless repeaters, widely used in 2G, 3G, and 4G systems, are a relatively new type of network node besides base stations. Wireless repeaters can also be called radio frequency repeaters (RF repeaters) or relays. Traditional wireless repeaters simply amplify and forward received signals. While this type of wireless repeater is simple and cost-effective, it cannot be flexibly adjusted according to the actual situation of the communication system, resulting in poor performance. Compared to traditional wireless repeaters, some communication systems have introduced NCRs. NCRs increase the ability to receive and process side control information (SCI) from network devices. Based on SCIs, NCRs can efficiently perform signal amplification and forwarding functions, reducing unnecessary noise amplification, thus giving NCRs better spatial directivity in reception and transmission. NR Rel-18 (release-18) included a NCR study item (SI). In September 2022, 3GPP approved RP-222673 and launched the “NR NCR” work item (WI) at NR Rel-18, thus officially commencing the standardization of NCR in the NR system.

[0098] According to the NCR research report (3GPP TR38.867), such as Figure 2 As shown, NCR 130 mainly includes two functional modules: Network Control Relay-Mobile Termination (NCR-MT) 131 and Network Control Relay-Forwarding (NCR-Fwd) 132. NCR-MT 131 is responsible for exchanging SCIs with base station 110 via the control link (C-link). NCR-Fwd (NCR-forwarding) 132 is mainly responsible for amplifying and forwarding the uplink (UL) / downlink (DL) radio frequency signals between base station 110 and user equipment 120 via the backhaul link (B-link) and access link (A-link). The behavior of NCR-Fwd 132 is controlled by the SCIs from base station 110. The SCI may include one or more of the following information: beam information, timing information, uplink-downlink time division duplex configuration (UL-DL TDD configuration) information, NCR-Fwd on-off information, and NCR-Fwd power control information.

[0099] In a communication system, a base station can periodically broadcast synchronization signal blocks; correspondingly, a user equipment can receive the synchronization signal blocks broadcast by the base station, thereby accessing the communication system based on the received synchronization signal blocks. It should be noted that the synchronization signal block mentioned in the embodiments of this application can be, for example, a synchronization signal / physical broadcast channel block (SS / PBCH block, SSB). SSB is sometimes also referred to as a synchronization broadcast signal.

[0100] In some scenarios, user equipment (UE) does not directly receive synchronization signal blocks sent by the base station, but rather receives synchronization signal blocks forwarded by relay nodes. For example, if an NCR (see [link to NCR]) is deployed in the communication system... Figure 2 If the NCR can receive the synchronization signal block sent by the base station, it can forward the synchronization signal block to the user equipment within the coverage area of ​​the NCR.

[0101] To increase the coverage of synchronization blocks, base stations may transmit multiple synchronization blocks using beam sweeping. However, since relay nodes may be located within the coverage area of ​​only part of the base station's beams, they typically only forward the synchronization blocks corresponding to that portion of the beams, potentially reducing the probability of user equipment successfully accessing the communication system.

[0102] Taking the NCR deployment scenario as an example, see Figure 3 and Figure 4 Due to the different capabilities of base station 110 and NCR 130, the downlink transmission beams (DL Tx beams) of base station 110 and NCR-Fwd ( Figure 3 and Figure 4 The internal structure of NCR is not shown. For a description of NCR-Fwd, please refer to [link / reference needed]. Figure 2 The downlink transmission beam of the base station 110 may use a completely different physical beam. When user equipment 120 accesses the network through NCR 130, user equipment 120 first needs to receive synchronization signal blocks from base station 110 through NCR 130. To increase the coverage of synchronization signal blocks, base station 110 may use beam scanning on B-link to transmit multiple synchronization signal blocks. Assuming that NCR-Fwd in NCR 130 is within the coverage area of ​​one beam of B-link, then NCR-Fwd can only receive one synchronization signal block (e.g., ...). Figure 3 (SSSBi shown). After receiving the synchronization signal block, NCR-Fwd can forward the synchronization signal block in the following two ways.

[0103] Method 1: For example Figure 3 As shown, NCR-Fwd can use a wide beam to forward synchronization signal blocks from base station 110 on A-link (i.e., Figure 3 (Fssbi in the context of synchronization signals). This method can increase the coverage of the synchronization signal block, but due to the use of wideband, the signal quality of Fssbi received by user equipment 120 is poor.

[0104] Method 2: For example Figure 4 As shown, NCR-Fwd can use the narrow beam corresponding to Fssbi to forward the synchronization signal block from base station 110 on A-link (i.e., Figure 4 (Fssbi in NCR-Fwd). Narrow beams have high beamforming gain, which can improve signal reception quality. However, due to the small coverage area of ​​narrow beams, user equipment 120 may not be within the coverage area of ​​narrow beams, thus preventing user equipment 120 from receiving the Fssbi relayed by NCR-Fwd.

[0105] To address the aforementioned issues, the relay node provided in this application, upon receiving one or more synchronization signal blocks, does not simply forward those one or more synchronization signal blocks. Instead, it sends one or more synchronization signal blocks of a different type (hereinafter referred to as the second type of synchronization signal block) than the one or more synchronization signal blocks (hereinafter referred to as the first type of synchronization signal block). This may achieve one or more of the following objectives: improving signal reception quality, reducing signaling overhead, improving resource utilization efficiency, and increasing the probability of user equipment successfully accessing the communication system.

[0106] The methods and apparatus provided in this application are illustrated below through multiple embodiments or examples. Without conflict, different features in these embodiments or examples can be combined to obtain new embodiments or examples, which also fall within the protection scope of this application.

[0107] Figure 5 The illustration shows a method 500 for a first node used in wireless communication, as provided in an embodiment of this application. The first node can be any type of node in a communication system that has relay or synchronization signal block forwarding functions.

[0108] As an example, the first node may be an NCR.

[0109] As an example, the first node may be a wireless repeater.

[0110] As an example, the first node may be a relay.

[0111] As an example, the first node can be a user equipment, that is, the user equipment can act as a relay node to forward synchronization signal blocks.

[0112] See Figure 5 In steps S510 to S520, one or more first-type synchronization signal blocks are received; one or more second-type synchronization signal blocks are sent.

[0113] As one embodiment, the one or more first-type synchronization signal blocks may include only one first-type synchronization signal block.

[0114] As one embodiment, the one or more first-type synchronization signal blocks may include multiple first-type synchronization signal blocks.

[0115] As an example, any one of the one or more first-class synchronization signal blocks is an SSB.

[0116] As an example, the one or more first-type synchronization signal blocks are used to determine or reconstruct the one or more second-type synchronization signal blocks.

[0117] As an example, the one or more first-type synchronization signal blocks are used to determine the index of any one of the one or more second-type synchronization signal blocks.

[0118] As an example, the one or more first-class synchronization signal blocks are used to determine the index of any one of the one or more second-class synchronization signal blocks from a plurality of candidate synchronization signal block indices.

[0119] As an example, the one or more first-class synchronization signal blocks are used to determine the DMRS of the PBCH included in any of the one or more second-class synchronization signal blocks.

[0120] As an example, the one or more first-class synchronization signal blocks are used to determine the first-class information (such as the payload of the PBCH) included in any of the one or more second-class synchronization signal blocks.

[0121] As one example, the one or more first-type synchronization signal blocks are used to access the base station.

[0122] As one embodiment, the one or more second-type synchronization signal blocks may include only one second-type synchronization signal block.

[0123] As one embodiment, the one or more second-type synchronization signal blocks include a plurality of second-type synchronization signal blocks.

[0124] As an example, any one of the one or more second-type synchronization signal blocks is an SSB.

[0125] As one example, the one or more second-type synchronization signal blocks are used to access the base station.

[0126] As an example, if the first node sends multiple second-type synchronization signal blocks, then the multiple second-type synchronization signal blocks correspond to multiple beams respectively.

[0127] As an example, if the first node sends multiple second-type synchronization signal blocks, then the multiple second-type synchronization signal blocks correspond to multiple spatial filters.

[0128] As an example, if the first node sends multiple second-type synchronization signal blocks, then the multiple second-type synchronization signal blocks correspond to multiple antenna ports respectively.

[0129] As an example, if the first node sends multiple second-type synchronization signal blocks, the multiple second-type synchronization signal blocks can be sent based on beam scanning.

[0130] As an example, the one or more second-type synchronization signal blocks may belong to a subset of the one or more first-type synchronization signal blocks.

[0131] As an example, the one or more second-type synchronization signal blocks may belong to a proper subset of the one or more first-type synchronization signal blocks.

[0132] As an example, the one or more second-type synchronization signal blocks can be determined based on the configuration information (such as time-domain resource configuration information) of the synchronization signal blocks pre-stored by the first node.

[0133] Any of the one or more first-type synchronization signal blocks may include first information.

[0134] As an example, the first information is used to generate the one or more second-type synchronization signal blocks.

[0135] As one embodiment, the first information includes system information. For example, the first information may refer to MIB information. That is, the one or more first-type synchronization signal blocks may contain the same MIB information.

[0136] As an example, any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indexes of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0137] The embodiments of this application do not specifically limit the definition of the first period.

[0138] As one embodiment, the first period may include a positive integer number of half-frames.

[0139] As an example, the first period can be a half-frame.

[0140] As an example, the first period can be equal to 0.5ms.

[0141] As one embodiment, the first period may include a positive integer number of frames.

[0142] Any one of the one or more first-type synchronization signal blocks can be transmitted on the first link, and any one of the one or more second-type synchronization signal blocks can be transmitted on the second link.

[0143] As an example, the first link may be a backhaul link.

[0144] As an example, the second link is an access link.

[0145] As an example, the first link is the link between the NCR-Fwd and the base station.

[0146] As one example, the second link is the link between NCR-Fwd and the user equipment.

[0147] As an example, NCR-Fwd communicates with the base station via the first link.

[0148] As an example, NCR-Fwd communicates with the user equipment via the second link.

[0149] As an example, the first link is DL, and the second link is DL.

[0150] As an example, the first link is DL and the second link is SL (Sidelink).

[0151] The preceding text mentions that any one of the one or more first-type synchronization signal blocks may include first information (such as MIB information). Correspondingly, any one of the one or more second-type synchronization signal blocks may also include the first information. That is, the one or more first-type synchronization signal blocks and the one or more second-type synchronization signal blocks may contain the same system information (such as MIB information).

[0152] The index of any one of the one or more second-type synchronization signal blocks can be one of a plurality of candidate synchronization signal block indices. The plurality of candidate synchronization signal block indices can be indices of a plurality of candidate synchronization signal blocks within one period (hereinafter referred to as the first period).

[0153] As an example, the first period may include a positive integer number of half-frames.

[0154] As an example, the first period can be a half-frame.

[0155] As an example, the first period can be equal to 0.5ms.

[0156] As one embodiment, the first period may include a positive integer number of frames.

[0157] At least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks. There are several ways to define the difference between at least one of the one or more second-type synchronization signal blocks and any one of the one or more first-type synchronization signal blocks; several possible definitions are given below.

[0158] Definition Method 1

[0159] The index of at least one of the one or more second-class synchronization signal blocks is different from the index of any one of the one or more first-class synchronization signal blocks.

[0160] Definition Method 2

[0161] The plurality of candidate synchronization signal blocks each include a plurality of PBCHs. Each PBCH carries a plurality of DMRSs, and the sequence index of any DMRS corresponds to at least one of the candidate synchronization signal block indices (e.g., a one-to-one correspondence between the sequence indices of the plurality of DMRSs and the candidate synchronization signal block indices). Any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks. The sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0162] For example, when the number of the plurality of candidate synchronization signal block indices is no greater than 8, the plurality of sequence indices of the plurality of DMRS correspond one-to-one with the plurality of candidate synchronization signal block indices.

[0163] Definition Method 3

[0164] The plurality of candidate synchronization signal blocks each include a plurality of PBCHs. Each PBCH carries a plurality of DMRSs, and each PBCH includes a plurality of first-type information. The first-type information may, for example, include the payload of the PBCH.

[0165] The first type of information included in any of the plurality of PBCHs and the sequence index of the DMRS together correspond to one of the plurality of candidate synchronization block indices. For example, the most significant bit (MSB) of the synchronization block index can be determined based on the multiple first type of information included in the plurality of PBCHs, and the least significant bit (LSB) of the synchronization block index can be determined based on the DMRS sequence of the plurality of PBCHs. The MSB and the LSB are combined to correspond to one of the indexes of the plurality of candidate synchronization blocks.

[0166] Furthermore, the first type of information in the PBCH included in at least one of the one or more second type of synchronization signal blocks is different from the first type of information in the PBCH included in any one of the one or more first type of synchronization signal blocks.

[0167] Alternatively, the sequence index of the DMRS in the PBCH of at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS in the PBCH of any one of the one or more first-type synchronization signal blocks.

[0168] As an example, when the number of candidate synchronization signal block indices is greater than 8, the first type of information in the multiple PBCHs and the sequence index of DMRS correspond one-to-one with the multiple candidate synchronization signal block indices.

[0169] Definition Method 4

[0170] The time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0171] As an example, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks include a time slot.

[0172] As an example, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks include one or more multi-carrier symbols in a time slot.

[0173] As one example, the plurality of candidate synchronization signal blocks correspond to a plurality of time-frequency resources.

[0174] As an example, the plurality of time-frequency resources correspond one-to-one with the plurality of candidate synchronization signal block indices.

[0175] As an example, the time-frequency resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-frequency resources occupied by any one of the one or more first-type synchronization signal blocks.

[0176] See Figure 6 The method 600 for a first node used in wireless communication provided in this application embodiment may further include step S610, namely, receiving first configuration information. The first configuration information may include parameters of a plurality of candidate synchronization signal blocks.

[0177] As an example, the first configuration information may include parameters indicating the transmission period and / or resource configuration of the plurality of candidate synchronization signal blocks.

[0178] As an example, the first configuration information may indicate one or more of the following among a plurality of candidate synchronization signal blocks: resource configuration information, the DMRS carried, the slot index, and the half-frame index.

[0179] As one embodiment, the first configuration information includes a radio resource control information element (RRC IE).

[0180] As an example, the first configuration information includes an SCI.

[0181] As one example, the first configuration information includes ServingCellConfigCommon.

[0182] As an example, the first configuration information is obtained by the first node when it initially accesses the communication system.

[0183] As an example, the first configuration information is transmitted on the third link.

[0184] As an example, the third link is a control link.

[0185] As an example, the third link is the link between the NCR-MT and the base station.

[0186] As an example, the NCR-MT communicates with the base station via the third link.

[0187] See Figure 7The method 700 for a first node used in wireless communication provided in this application embodiment may further include step S710, namely receiving second configuration information.

[0188] The second configuration information can be used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks.

[0189] As one embodiment, the second configuration information includes an enable / disable indication. If the second configuration information includes an enable indication, the first node sends the one or more second-type synchronization signal blocks, and at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks. If the second configuration information includes an disable indication, the first node does not send the one or more second-type synchronization signal blocks, but instead directly forwards the one or more first-type synchronization signal blocks.

[0190] As one embodiment, the second configuration information can be used to determine the number of the one or more second-type synchronization signal blocks.

[0191] As an example, the number of one or more second-type synchronization signal blocks can be determined based on the channel conditions or physical environment between the first node and the second node, and the number of one or more second-type synchronization signal blocks can be configured through the second configuration information.

[0192] As one embodiment, the second configuration information is used to determine the one or more second-type synchronization signal blocks.

[0193] As one embodiment, the second configuration information is used to determine the time-domain resources occupied by the second type of synchronization signal block.

[0194] As one embodiment, the second configuration information is used to determine the DMRS in the PBCH included in the second type of synchronization signal block.

[0195] As an example, the second configuration information is used to determine the first type of information (such as the payload of the PBCH) included in the second type of synchronization signal block.

[0196] As an example, the second configuration information is configured by SCI.

[0197] As an example, the second configuration information is configured by OAM.

[0198] By introducing the configuration information described in the second part above, the transmission method of the synchronization signal can be flexibly adjusted according to the actual situation.

[0199] See Figure 8 The method 800 for a first node used in wireless communication provided in this application embodiment may further include step S810, namely receiving a first signaling.

[0200] As an example, the first signaling is transmitted on the third link.

[0201] As one example, the first signaling includes SCI.

[0202] As an example, the first signaling includes an RRC message.

[0203] As an example, the first signaling includes an RRC IE.

[0204] As an example, the first signaling includes a DCI.

[0205] As one embodiment, the first signaling includes one or more first-type beam identifiers.

[0206] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers.

[0207] As an example, the first signaling is used to determine the one or more first-type synchronization signal blocks.

[0208] As an example, the first signaling is used to determine the number of first-type synchronization signal blocks.

[0209] As an example, the first signaling is used to determine the time-domain resources occupied by the first type of synchronization signal block.

[0210] As an example, the first signaling is used to determine the DMRS in the PBCH included in the first type of synchronization signal block.

[0211] As an example, the first signaling is used to determine a first type of information (such as the payload of the PBCH) in the PBCH included in the first type of synchronization signal block.

[0212] As one embodiment, the first signaling is used to determine the one or more first-type beams from a first beam set. The first beam set includes at least two first-type beams.

[0213] As one embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers correspond to one or more first-type beams respectively.

[0214] As an example, the one or more first-type beams are respectively used to receive the one or more first-type synchronization signal blocks.

[0215] As one embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers correspond to one or more first-type beams, and the one or more first-type beams are respectively used to receive the one or more first-type synchronization signal blocks.

[0216] As one embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers correspond to one or more first-type beams, and the one or more first-type beams are respectively used to transmit signals on the first link.

[0217] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers correspond to one or more first-class frequency domain resources respectively.

[0218] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0219] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit signals on the first link.

[0220] As one embodiment, the first signaling is used to determine the one or more first-type beams from a first beam set. The first beam set includes at least two first-type beams.

[0221] As an example, the one or more first-type beams are respectively used to receive the one or more first-type synchronization signal blocks.

[0222] It should be noted that the beam mentioned in the embodiments of this application may include or be replaced by at least one of the following: beam, physical beam, logical beam, spatial filter, spatial domain filter, spatial domain transmission filter, spatial domain reception filter, and antenna port.

[0223] The above text combined Figures 5 to 8 This application describes in detail, from the perspective of the first node, the method for a first node used in wireless communication provided by the embodiments of this application. The following section, in conjunction with... Figure 9 This application describes a method for using a second node in wireless communication from the perspective of a second node. The second node can be a node in a communication system that initiates or broadcasts a synchronization signal block. As an example, the second node can be a base station. It should be understood that the descriptions of the first and second nodes correspond to each other; therefore, any parts not described in detail can be found above.

[0224] Figure 9 This is a schematic flowchart of a method for a second node used in wireless communication, provided in an embodiment of this application. Figure 9 Method 900 includes step S910.

[0225] In step S910, one or more first-type synchronization signal blocks are sent. Each of the one or more first-type synchronization signal blocks includes first information; the index of each of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indices.

[0226] The one or more first-type synchronization signal blocks are used to trigger the first node to send one or more second-type synchronization signal blocks. Any one of the one or more second-type synchronization signal blocks includes the first information. The index of any one of the one or more second-type synchronization signal blocks is one of the indexes of the plurality of candidate synchronization signal blocks. At least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks.

[0227] As an example, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0228] As an example, any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indexes of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0229] As one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indexes of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0230] As one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, the plurality of PBCHs each include a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any of the one or more first-type synchronization signal blocks.

[0231] As an example, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0232] As an example, Figure 9 The method may further include: sending first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0233] As an example, Figure 9The method may further include: sending second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks.

[0234] As one embodiment, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0235] As one embodiment, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0236] As an example, Figure 9 The method may further include: sending a first signaling; wherein the first signaling is transmitted on a third link, and the first signaling is used to determine the one or more first-type synchronization signal blocks.

[0237] As one embodiment, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of the one or more first-type beams is used to transmit signals on the first link.

[0238] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0239] The embodiments of this application are described in more detail below with specific examples. Figure 10 In the example, NCR corresponds to the first node mentioned earlier, gNB corresponds to the second node mentioned earlier, and SSB corresponds to the synchronization signal block mentioned earlier. It should be noted that... Figure 10 The examples provided are merely to help those skilled in the art understand the embodiments of this application, and are not intended to limit the embodiments of this application to the specific numerical values ​​or specific scenarios illustrated. Figure 10 The examples are obviously subject to various equivalent modifications or changes, and such modifications or changes also fall within the scope of the embodiments of this application.

[0240] See Figure 10Considering that the multiple SSBs transmitted by the gNB carry the same MIB information except for the time-domain resource indication, the transmission of multiple SSBs is similar to repeated transmission. Since the NCR-MT has already received and decoded the SSBs transmitted by the gNB during initial access, it can also know the transmission period and resource configuration of the SSBs through the received system information. The configuration information obtained by the NCR-MT during initial access can be pre-stored in the NCR. When the NCR-Fwd detects SSBi on the B-link, it can reconstruct multiple FSSBSs on the A-link using this pre-stored configuration information. These reconstructed FSSBSs correspond to the content carried and the time-frequency resources occupied by the multiple SSBs configured by the gNB. Then, the NCR-Fwd can transmit these reconstructed FSSBSs through beam scanning, enabling the user equipment to detect the higher-quality FSSBj from these multiple FSSBSs to perform synchronization and initial access. It should be understood that this FSSBj can be different from or the same as SSBi.

[0241] Furthermore, to ensure that NCR is transparent to user equipment, the FSSBS reconstructed and forwarded by NCR-Fwd can be a subset (e.g., a true subset) of the multiple SSBs configured by the gNB. The number of FSSBS reconstructed and forwarded by NCR-Fwd is no greater than the number of SSBs configured by the gNB, and the number of FSSBS reconstructed and forwarded by NCR-Fwd can be configured through SCI or OAM according to channel conditions or physical environment.

[0242] In addition, although NCR-Fwd has the ability to reconstruct multiple FSSBSs through one SSB, it still requires NCR to pre-store the signals carried by multiple SSBs (such as demodulation reference signal DMRS, slot index, half-frame index, etc.) and resource configuration information. Therefore, the SSB reconstruction function of NCR-Fwd can be enabled or disabled through SCI signaling or OAM configuration.

[0243] The above text combined Figures 1 to 10 The method embodiments of this application are described in detail below, in conjunction with... Figures 11 to 14 The present application provides a detailed description of the apparatus embodiments. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be found in the foregoing method embodiments.

[0244] Figure 11 This is a schematic diagram of the structure of a node used for wireless communication according to an embodiment of this application. The node 1100 can be the first node mentioned above. The first node may include a first receiving module 1110 and a first transmitting module 1120.

[0245] The first receiving module 1110 can be used to receive one or more first-type synchronization signal blocks, any one of the one or more first-type synchronization signal blocks including first information; the index of any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indices.

[0246] The first transmitting module 1120 can be used to transmit one or more second-type synchronization signal blocks, any one of the one or more second-type synchronization signal blocks including the first information; the index of any one of the one or more second-type synchronization signal blocks is one of the indexes of the plurality of candidate synchronization signal blocks, and at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks.

[0247] As an example, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0248] As an example, any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indexes of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0249] As one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of physical broadcast channels (PBCHs), the plurality of PBCHs each carry a plurality of demodulation reference signals (DMRSs), and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indexes of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0250] As one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, the plurality of PBCHs each include a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any of the one or more first-type synchronization signal blocks.

[0251] As an example, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0252] As one embodiment, the first node further includes: a second receiving module, configured to receive first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0253] As an example, the first node further includes: a third receiving module, configured to receive second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks.

[0254] As one embodiment, the second configuration information is configured by the Side Control Information (SCI), or the second configuration information is configured by the Operation and Maintenance Management (OAM).

[0255] As one embodiment, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0256] As an example, the first node further includes: a fourth receiving module, configured to receive a first signaling; wherein the first signaling is transmitted on a third link, and the first signaling is used to determine the one or more first-type synchronization signal blocks.

[0257] As one embodiment, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of the one or more first-type beams is used to transmit signals on the first link.

[0258] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0259] Figure 12 This is a schematic diagram of the structure of a node used for wireless communication according to another embodiment of this application. The node 1200 can be the second node mentioned above. The second node may include a first transmitting module 1210.

[0260] The first transmitting module 1210 can be used to transmit one or more first-type synchronization signal blocks, each of the one or more first-type synchronization signal blocks including first information; the index of any of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indices;

[0261] The one or more first-type synchronization signal blocks are used to trigger the first node to send one or more second-type synchronization signal blocks. Any one of the one or more second-type synchronization signal blocks includes the first information. The index of any one of the one or more second-type synchronization signal blocks is one of the indexes of the plurality of candidate synchronization signal blocks. At least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks.

[0262] As an example, the index of at least one of the one or more second-type synchronization signal blocks is different from the index of any one of the one or more first-type synchronization signal blocks.

[0263] As an example, any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the indexes of the plurality of candidate synchronization signal blocks respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

[0264] As one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of physical broadcast channels (PBCHs), the plurality of PBCHs each carry a plurality of demodulation reference signals (DMRSs), and the sequence index of any DMRS in the plurality of DMRSs corresponds to at least one of the indexes of the plurality of candidate synchronization signal blocks; any one of the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and the sequence index of the DMRS of the PBCH included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of the PBCH included in any one of the one or more first-type synchronization signal blocks.

[0265] As one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of PBCHs, the plurality of PBCHs each carry a plurality of DMRSs, the plurality of PBCHs each include a plurality of first-type information, and the sequence index of the first-type information and the DMRS included in any of the plurality of PBCHs jointly corresponds to one of the indexes of the plurality of candidate synchronization signal blocks; the first-type information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the first-type information in the PBCH or the sequence index of the DMRS included in any of the one or more first-type synchronization signal blocks.

[0266] As an example, the time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

[0267] As one embodiment, the second node may further include: a second sending module, configured to send first configuration information; wherein the first configuration information includes parameters of the plurality of candidate synchronization signal blocks.

[0268] As one embodiment, the second node may further include: a third sending module, configured to send second configuration information; wherein the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-type synchronization signal blocks.

[0269] As one embodiment, the second configuration information is configured by the Side Control Information (SCI), or the second configuration information is configured by the Operation and Maintenance Management (OAM).

[0270] As one embodiment, any one of the one or more first-type synchronization signal blocks is transmitted on a first link, and any one of the one or more second-type synchronization signal blocks is transmitted on a second link.

[0271] As one embodiment, the second node further includes: a fourth transmitting module, configured to transmit a first signaling; wherein the first signaling is transmitted on a third link, and the first signaling is used to determine the one or more first-type synchronization signal blocks.

[0272] As one embodiment, the first signaling includes one or more first-type beam identifiers, each of which corresponds to one or more first-type beams, and each of the one or more first-type beams is used to transmit signals on the first link.

[0273] As one embodiment, the first signaling includes one or more first-class frequency domain resource identifiers, each of which corresponds to one or more first-class frequency domain resources, and each of which is used to transmit the one or more first-class synchronization signal blocks.

[0274] Figure 13 This is a schematic structural diagram of the device according to an embodiment of this application. Figure 13 The dashed lines indicate that the unit or module is optional. The device 1300 can be used to implement the methods described in the above method embodiments. The device 1300 can be a chip or user equipment.

[0275] Apparatus 1300 may include one or more processors 1310. The processor 1310 may support apparatus 1300 in implementing the methods described in the preceding method embodiments. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0276] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store a program that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the preceding method embodiments. The memories 1320 may be independent of the processor 1310 or integrated within the processor 1310.

[0277] The device 1300 may also include a transceiver 1330. The processor 1310 can communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 can send and receive data with other devices or chips via the transceiver 1330.

[0278] Figure 14 This is a schematic diagram of the hardware module of the communication device provided in an embodiment of this application. Specifically, Figure 14 A block diagram is shown of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0279] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0280] The second communication device 410 includes a controller / processor 475, a memory 476, a data source 477, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0281] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network or from the data source 477 are provided to the controller / processor 475. The core network and data source 477 represent all protocol layers above the L2 layer. The controller / processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation for the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., binary phase shift keying, quadrature phase shift keying, M-phase shift keying, M-quadrature amplitude modulation). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then uses inverse fast Fourier transform to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by multi-antenna transmit processor 471 into an RF stream, which is then provided to different antennas 420.

[0282] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of Layer 1. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a fast Fourier transform to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted by the second communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transmission and logical channels to recover the upper-layer data packets from the second communication device 410. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0283] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, upper-layer data packets are provided to the controller / processor 459 using a data source 467. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between the logical and transport channels, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0284] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 storing program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper-layer data packets from the first communication device 450. Upper-layer data packets from the controller / processor 475 can be provided to the core network or all protocol layers above the L2 layer, and various control signals can also be provided to the core network or L3 for L3 processing.

[0285] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 includes at least: receiving a first synchronization signal block, the index of the first synchronization signal block being one of a plurality of candidate synchronization signal block indices; transmitting a first preamble group, the first preamble group including a plurality of preambles; a first random access channel timing group including a plurality of random access channel timings, the plurality of random access channel timings in the first random access channel timing group being respectively used to transmit the plurality of preambles in the first preamble group; any two random access channel timings in the first random access channel timing group are orthogonal in the time domain; wherein, the plurality of candidate synchronization signal block indices are mapped to a plurality of random access channel timing groups according to a first mapping order, the first random access channel timing group being one of the plurality of random access channel timing groups; the first random access channel timing group corresponds to a first timing group type, the first timing group type being one of a plurality of candidate timing group types; the index of the first synchronization signal block, the first timing group type and the first mapping order are used to determine the first random access channel timing group.

[0286] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first synchronization signal block, the index of which is one of a plurality of candidate synchronization signal block indices; transmitting a first preamble group, the first preamble group including a plurality of preambles; a first random access channel timing group including a plurality of random access channel timings, the plurality of random access channel timings in the first random access channel timing group being respectively used to transmit the plurality of preambles in the first preamble group; any two random access channel timings in the first random access channel timing group being orthogonal in the time domain; wherein the plurality of candidate synchronization signal block indices are mapped to the plurality of random access channel timing groups according to a first mapping order, the first random access channel timing group being one of the plurality of random access channel timing groups; the first random access channel timing group corresponding to a first timing group type, the first timing group type being one of a plurality of candidate timing group types; the index of the first synchronization signal block, the first timing group type, and the first mapping order being used to determine the first random access channel timing group.

[0287] As an example, the first communication device 450 corresponds to the first node in this application.

[0288] As an example, the second communication device 410 corresponds to the second node in this application.

[0289] As an example, the first communication device 450 is a UE.

[0290] As an example, the first communication device 450 is a V2X-enabled user equipment.

[0291] As an example, the first communication device 450 is a D2D-enabled user equipment.

[0292] As an example, the first communication device 450 is a network control relay.

[0293] As an example, the first communication device 450 is a relay.

[0294] As one embodiment, the second communication device 410 is a base station.

[0295] As one embodiment, the antenna 452, the receiver 454, the multi-antenna receiver processor 458, the receiver processor 456, and the controller / processor 459 are used to receive the first synchronization signal block in this application.

[0296] As an example, the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, and the controller / processor 475 are used to transmit one or more synchronization signal blocks in this application, wherein the first synchronization signal block is one of the one or more synchronization signal blocks.

[0297] As one embodiment, the antenna 452, the transmitter 454, the multi-antenna transmitter processor 457, the transmitter processor 468, and the controller / processor 459 are used to transmit the first preamble group in this application.

[0298] As one embodiment, the antenna 420, the receiver 418, the multi-antenna receiver processor 472, the receiver processor 470, and the controller / processor 475 are used to receive the first preamble in this application.

[0299] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a node provided in this application embodiment, and the program causes a computer to execute the methods performed by the node in various embodiments of this application.

[0300] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a node provided in this application embodiment, and the program causes a computer to perform the methods executed by the node in various embodiments of this application.

[0301] This application also provides a computer program. This computer program can be applied to the nodes provided in this application, and causes the computer to execute the methods performed by the nodes in various embodiments of this application.

[0302] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0303] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0304] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0305] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0306] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including user equipment and network equipment). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0307] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0308] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0309] In the various embodiments of this application, the order of the above-mentioned processes does not imply 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 this application.

[0310] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0311] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0312] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0313] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0314] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for a first node used in wireless communication, characterized in that, The first node includes a Network Control Relay-Mobile Terminal (NCR-MT) and a Network Control Relay-Forwarder (NCR-Fwd), and the method includes: The NCR-MT receives side control information (SCI) on the control link, and the SCI is used to determine one or more type-1 beams. The NCR-Fwd receives one or more Type I synchronization signal blocks on the backhaul link, and any one of the one or more Type I synchronization signal blocks includes a Master Information Block (MIB); the one or more Type I beams are respectively used to receive the one or more Type I synchronization signal blocks. The NCR-Fwd transmits one or more second-type synchronization signal blocks on the access link, and any one of the one or more second-type synchronization signal blocks includes the MIB; The first period includes multiple candidate synchronization signal blocks, each of which includes multiple Physical Broadcast Channel (PBCH) payloads and multiple Demodulation Reference Signals (DMRS). Any one of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal blocks, and any one of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal blocks. The PBCH payload of at least one of the one or more second-type synchronization signal blocks is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks; or, the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks; or, both the PBCH payload and the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks are different from the sequence index of the PBCH payload and the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks.

2. The method according to claim 1, characterized in that, The index of any one of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal block indices; the index of any one of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal block indices; the multiple candidate synchronization signal block indices are respectively the indices of the multiple candidate synchronization signal blocks in the first period.

3. The method according to claim 1 or 2, characterized in that, The PBCH payload and DMRS sequence index of each of the plurality of candidate synchronization signal blocks together indicate one of the plurality of candidate synchronization signal block indices.

4. The method according to any one of claims 1-3, characterized in that, The first period is one half-frame.

5. The method according to any one of claims 1-4, characterized in that, The index of at least one of the one or more second-class synchronization signal blocks is different from the index of any one of the one or more first-class synchronization signal blocks.

6. The method according to any one of claims 1-5, characterized in that, The PBCH payload of at least one of the one or more second-type synchronization signal blocks is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks.

7. The method according to any one of claims 1-6, characterized in that, The sequence index of the PBCH DMRS included in at least one of the one or more second-class synchronization signal blocks is different from the sequence index of the PBCH DMRS included in any one of the one or more first-class synchronization signal blocks.

8. The method according to any one of claims 1-7, characterized in that, The time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

9. The method according to any one of claims 1-8, characterized in that, include: The NCR-MT receives first configuration information on the control link, the first configuration information including a Radio Resource Control Information Element (RRC IE); The first configuration information indicates one or more of the following among the plurality of candidate synchronization signal blocks: resource configuration information, the DMRS carried, the slot index, and the half-frame index.

10. The method according to any one of claims 1-9, characterized in that, include: The NCR-MT receives second configuration information on the control link; Wherein, the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks; or, the second configuration information is used to indicate the number of the one or more second-type synchronization signal blocks; or, the second configuration information is used to indicate the one or more second-type synchronization signal blocks.

11. The method according to claim 10, characterized in that, The second configuration information is configured by the Side Control Information (SCI) or by the Operation, Maintenance and Management (OAM).

12. The method according to any one of claims 1-11, characterized in that, The SCI includes one or more Type I beam identifiers, each corresponding to one or more Type I beams, which are used to transmit signals on the backhaul link.

13. The method according to any one of claims 1-12, characterized in that, The SCI includes one or more Class I frequency domain resource identifiers, each of which corresponds to one or more Class I frequency domain resources, and each of which is used to transmit the one or more Class I synchronization signal blocks.

14. A method for a user equipment used in wireless communication, characterized in that, The method includes: Receive one or more second-type synchronization signal blocks on the access link, wherein any one of the one or more second-type synchronization signal blocks includes a master information block (MIB); The first period includes multiple candidate synchronization signal blocks, each comprising a physical broadcast channel (PBCH) payload and a demodulation reference signal (DMRS). The MIB is further included in any one of the first-type synchronization signal blocks, and the receiver of any one of the first-type synchronization signal blocks is the sender of any one of the one or more second-type synchronization signal blocks. Each of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal blocks, and each of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal blocks. The PBCH payload of at least one second-type synchronization signal block in the block is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks; or, the sequence index of the DMRS of at least one second-type synchronization signal block in the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of any one of the one or more first-type synchronization signal blocks; or, both the PBCH payload and the sequence index of the DMRS of at least one second-type synchronization signal block in the one or more second-type synchronization signal blocks are different from the PBCH payload and the sequence index of the DMRS of any one of the one or more first-type synchronization signal blocks.

15. The method according to claim 14, characterized in that, The index of any one of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal block indices; the index of any one of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal block indices; the multiple candidate synchronization signal block indices are respectively the indices of the multiple candidate synchronization signal blocks in the first period.

16. The method according to claim 14 or 15, characterized in that, The PBCH payload and DMRS sequence index of each of the plurality of candidate synchronization signal blocks together indicate one of the plurality of candidate synchronization signal block indices.

17. The method according to any one of claims 14-16, characterized in that, The first period is one half-frame.

18. The method according to any one of claims 14-17, characterized in that, The index of at least one of the one or more second-class synchronization signal blocks is different from the index of any one of the one or more first-class synchronization signal blocks.

19. The method according to any one of claims 14-18, characterized in that, The PBCH payload of at least one of the one or more second-type synchronization signal blocks is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks.

20. The method according to any one of claims 14-19, characterized in that, The sequence index of the PBCH DMRS included in at least one of the one or more second-class synchronization signal blocks is different from the sequence index of the PBCH DMRS included in any one of the one or more first-class synchronization signal blocks.

21. The method according to any one of claims 14-20, characterized in that, The time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

22. A first node used for wireless communication, characterized in that, The first node includes a Network Control Relay-Mobile Terminal (NCR-MT) and a Network Control Relay-Forwarder (NCR-Fwd), and the first node is used for: The NCR-MT receives side control information (SCI) on the control link, and the SCI is used to determine one or more type-1 beams. The NCR-Fwd receives one or more Type I synchronization signal blocks on the backhaul link, and any one of the one or more Type I synchronization signal blocks includes a Master Information Block (MIB); the one or more Type I beams are respectively used to receive the one or more Type I synchronization signal blocks. The NCR-Fwd transmits one or more second-type synchronization signal blocks on the access link, and any one of the one or more second-type synchronization signal blocks includes the MIB; The first period includes multiple candidate synchronization signal blocks, each of which includes multiple Physical Broadcast Channel (PBCH) payloads and multiple Demodulation Reference Signals (DMRS). Any one of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal blocks, and any one of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal blocks. The PBCH payload of at least one of the one or more second-type synchronization signal blocks is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks; or, the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks; or, both the PBCH payload and the sequence index of the DMRS included in at least one of the one or more second-type synchronization signal blocks are different from the sequence index of the PBCH payload and the sequence index of the DMRS included in any one of the one or more first-type synchronization signal blocks.

23. The first node according to claim 22, characterized in that, The index of any one of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal block indices; the index of any one of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal block indices; the multiple candidate synchronization signal block indices are respectively the indices of the multiple candidate synchronization signal blocks in the first period.

24. The first node according to claim 22 or 23, characterized in that, The PBCH payload and DMRS sequence index of each of the plurality of candidate synchronization signal blocks together indicate one of the plurality of candidate synchronization signal block indices.

25. The first node according to any one of claims 22-24, characterized in that, The first period is one half-frame.

26. The first node according to any one of claims 22-25, characterized in that, The index of at least one of the one or more second-class synchronization signal blocks is different from the index of any one of the one or more first-class synchronization signal blocks.

27. The first node according to any one of claims 22-26, characterized in that, The PBCH payload of at least one of the one or more second-type synchronization signal blocks is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks.

28. The first node according to any one of claims 22-27, characterized in that, The sequence index of the PBCH DMRS included in at least one of the one or more second-class synchronization signal blocks is different from the sequence index of the PBCH DMRS included in any one of the one or more first-class synchronization signal blocks.

29. The first node according to any one of claims 22-28, characterized in that, The time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

30. The first node according to any one of claims 22-29, characterized in that, The first node is also used for: The NCR-MT receives first configuration information on the control link, the first configuration information including a Radio Resource Control Information Element (RRC IE); The first configuration information indicates one or more of the following among the plurality of candidate synchronization signal blocks: resource configuration information, the DMRS carried, the slot index, and the half-frame index.

31. The first node according to any one of claims 22-30, characterized in that, The first node is also used for: The NCR-MT receives second configuration information on the control link; Wherein, the second configuration information is used to determine whether at least one of the one or more second-type synchronization signal blocks is different from any one of the one or more first-type synchronization signal blocks; or, the second configuration information is used to indicate the number of the one or more second-type synchronization signal blocks; or, the second configuration information is used to indicate the one or more second-type synchronization signal blocks.

32. The first node according to claim 31, characterized in that, The second configuration information is configured by the Side Control Information (SCI) or by the Operation, Maintenance and Management (OAM).

33. The first node according to any one of claims 22-32, characterized in that, The SCI includes one or more Type I beam identifiers, each corresponding to one or more Type I beams, which are used to transmit signals on the backhaul link.

34. The first node according to any one of claims 22-33, characterized in that, The SCI includes one or more Class I frequency domain resource identifiers, each of which corresponds to one or more Class I frequency domain resources, and each of which is used to transmit the one or more Class I synchronization signal blocks.

35. A user equipment used for wireless communication, characterized in that, The user equipment is used for: Receive one or more second-type synchronization signal blocks on the access link, wherein any one of the one or more second-type synchronization signal blocks includes a master information block (MIB); The first period includes multiple candidate synchronization signal blocks, each comprising a physical broadcast channel (PBCH) payload and a demodulation reference signal (DMRS). The MIB is further included in any one of the first-type synchronization signal blocks, and the receiver of any one of the first-type synchronization signal blocks is the sender of any one of the one or more second-type synchronization signal blocks. Each of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal blocks, and each of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal blocks. The PBCH payload of at least one second-type synchronization signal block in the block is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks; or, the sequence index of the DMRS of at least one second-type synchronization signal block in the one or more second-type synchronization signal blocks is different from the sequence index of the DMRS of any one of the one or more first-type synchronization signal blocks; or, both the PBCH payload and the sequence index of the DMRS of at least one second-type synchronization signal block in the one or more second-type synchronization signal blocks are different from the PBCH payload and the sequence index of the DMRS of any one of the one or more first-type synchronization signal blocks.

36. The user equipment according to claim 35, characterized in that, The index of any one of the one or more first-type synchronization signal blocks is one of the multiple candidate synchronization signal block indices; the index of any one of the one or more second-type synchronization signal blocks is also one of the multiple candidate synchronization signal block indices; the multiple candidate synchronization signal block indices are respectively the indices of the multiple candidate synchronization signal blocks in the first period.

37. The user equipment according to claim 35 or 36, characterized in that, The PBCH payload and DMRS sequence index of each of the plurality of candidate synchronization signal blocks together indicate one of the plurality of candidate synchronization signal block indices.

38. The user equipment according to any one of claims 35-37, characterized in that, The first period is one half-frame.

39. The user equipment according to any one of claims 35-38, characterized in that, The index of at least one of the one or more second-class synchronization signal blocks is different from the index of any one of the one or more first-class synchronization signal blocks.

40. The user equipment according to any one of claims 35-39, characterized in that, The PBCH payload of at least one of the one or more second-type synchronization signal blocks is different from the PBCH payload of any one of the one or more first-type synchronization signal blocks.

41. The user equipment according to any one of claims 35-40, characterized in that, The sequence index of the PBCH DMRS included in at least one of the one or more second-class synchronization signal blocks is different from the sequence index of the PBCH DMRS included in any one of the one or more first-class synchronization signal blocks.

42. The user equipment according to any one of claims 35-41, characterized in that, The time-domain resources occupied by at least one of the one or more second-type synchronization signal blocks are different from the time-domain resources occupied by any one of the one or more first-type synchronization signal blocks.

43. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-13 or 14-21.

44. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-13 or 14-21.

45. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-13 or 14-21.

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