Method and apparatus for nodes for wireless communication

Abstract

A method and apparatus of a first node used for wireless communication are provided. The method comprises the following steps: receiving one or more first-class synchronization signal blocks, wherein any one of the one or more first-class synchronization signal blocks comprises first information; the index of any one of the one or more first-class synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; sending one or more second type of synchronization signal blocks, wherein any second type of synchronization signal block in the one or more second type of synchronization signal blocks comprises the first information; the index of any second type of synchronization signal block in the one or more second type of synchronization signal blocks is one of the plurality of candidate synchronization signal block indexes; at least one second type of synchronization signal block in the one or more second type of synchronization signal blocks is different from any one first type of synchronization signal block in the one or more first type of synchronization signal blocks.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a method and device for a node used for wireless communication. Background Art

[0002] With the trend of network densification and millimeter wave (mmW) communication applications, some new network nodes are gradually being proposed to improve network coverage and support the rapidly growing number of users. Such new network nodes can increase the flexibility of network deployment and thus have attracted more and more attention.

[0003] For example, some communication systems introduce relay nodes that can amplify and forward communication signals between user equipment (UE) and a base station. The relay node can be, for example, a network-controlled repeater (NCR).

[0004] In order to improve the coverage performance of the synchronization signal block, the base station may send multiple synchronization signal blocks in a beam scanning manner. In a common scenario where a relay node is deployed, when the base station sends multiple synchronization signal blocks in a beam scanning manner, since the relay node may only be located within the coverage of part of the beam sent by the base station, the relay node can only forward part of the synchronization signal blocks, thereby affecting the coverage of the relay node, or increasing the power consumption of the relay node, which is not conducive to the user equipment to maintain system synchronization, beam measurement and mobility management, and reduces the probability of the user equipment successfully accessing the communication system. Summary of the invention

[0005] Embodiments of the present application provide a method and an apparatus for a node used for wireless communication to improve the working efficiency of a communication system.

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

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

[0008] As an implementation method, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0009] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels (physical broadcast channel, PBCH), the multiple PBCHs respectively carry multiple demodulation reference signals (demodulation reference signal, DMRS), and the sequence index of any DMRS among the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0010] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs jointly corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

[0011] As an implementation method, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

[0012] As an implementation manner, the method also includes: receiving first configuration information; wherein the first configuration information includes parameters of the multiple candidate synchronization signal blocks.

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

[0014] As an implementation manner, 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] As an implementation method, any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

[0016] As an implementation manner, the method also includes: receiving 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] As an implementation method, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0018] As an implementation method, the first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

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

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

[0021] As an implementation method, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0022] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, and the sequence index of any DMRS among the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0023] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs jointly corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

[0024] As an implementation method, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

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

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

[0027] As an implementation manner, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0028] As an implementation method, any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

[0029] As an implementation manner, 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] As an implementation method, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0031] As an implementation method, the first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0032] According to a third aspect, a node is provided for wireless communication, wherein the node is a first node, and the first node comprises: a first receiving module, used to receive one or more first-type synchronization signal blocks, any of the one or more first-type synchronization signal blocks includes first information; the index of any of the one or more first-type synchronization signal blocks is one of multiple candidate synchronization signal block indexes; a first sending module, used to send one or more second-type synchronization signal blocks, any of the one or more second-type synchronization signal blocks includes the first information; the index of any of the one or more second-type synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one of the one or more second-type synchronization signal blocks is different from any of the one or more first-type synchronization signal blocks.

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

[0034] As an implementation method, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0035] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, and the sequence index of any DMRS among the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0036] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs jointly corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

[0037] As an implementation method, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

[0038] As an implementation method, the first node also includes: a second receiving module, used to receive first configuration information; wherein the first configuration information includes parameters of the multiple candidate synchronization signal blocks.

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

[0040] As an implementation manner, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0041] As an implementation method, any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

[0042] As an implementation method, the first node includes: a fourth receiving module, used to receive 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.

[0043] As an implementation method, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0044] As an implementation method, the first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0045] In a fourth aspect, a node used for wireless communication is provided, wherein the node is a second node, and the second node includes: a first sending module, used to send one or more first-class synchronization signal blocks, any of the one or more first-class synchronization signal blocks includes first information; the index of any of the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal block indexes; wherein the one or more first-class synchronization signal blocks are used to trigger the first node to send one or more second-class synchronization signal blocks, any of the one or more second-class synchronization signal blocks includes the first information; the index of any of the one or more second-class synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one of the one or more second-class synchronization signal blocks is different from any of the one or more first-class synchronization signal blocks.

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

[0047] As an implementation method, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0048] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, and the sequence index of any DMRS among the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0049] As an implementation method, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs jointly corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

[0050] As an implementation method, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

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

[0052] As an implementation method, the second node also 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-class synchronization signal blocks is different from any of the one or more first-class synchronization signal blocks, or, the second configuration information is used to determine the number of the one or more second-class synchronization signal blocks.

[0053] As an implementation manner, the second configuration information is configured by SCI, or the second configuration information is configured by OAM.

[0054] As an implementation method, any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

[0055] As an implementation method, the second node includes: a fourth sending module, used to send 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.

[0056] As an implementation method, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0057] As an implementation method, the first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0058] In a fifth aspect, a node is provided for wireless communication, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the node executes the method described in any implementation method of the first aspect or the second aspect.

[0059] In a sixth aspect, a device is provided, comprising a processor, configured to call a program from a memory so that the device executes a method as described in any implementation of the first aspect or the second aspect.

[0060] In a seventh aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes a method as described in any implementation of the first aspect or the second aspect.

[0061] In an eighth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in any implementation of the first aspect or the second aspect.

[0062] In a ninth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in any implementation of the first aspect or the second aspect.

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

[0064] In an embodiment of the present application, the first node acting as a relay does not simply forward the received one or more 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 facilitating improving the working efficiency of the communication system.

[0065] The method for a node used for wireless communication provided in an embodiment of the present application is beneficial to improving the coverage of a relay node.

[0066] The method for a node used for wireless communication provided in an embodiment of the present application is beneficial to reducing the power consumption of a relay node.

[0067] The method for a node used for wireless communication provided in an embodiment of the present application is beneficial for user equipment to maintain system synchronization, beam measurement and mobility management.

[0068] The method for a node used for wireless communication provided in an embodiment of the present application is beneficial to improving the probability of a user device successfully accessing a communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 The following is an example diagram of the system architecture of a wireless communication system to which the embodiments of the present application can be applied.

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

[0071] Figure 3 The following is an example of a possible signal forwarding method of NCR.

[0072] Figure 4 The figure is an example of another possible signal forwarding method of NCR.

[0073] Figure 5 It is a flowchart of a method provided by a first node used for wireless communication according to an embodiment of the present application.

[0074] Figure 6 It is a flowchart of a method provided by a first node used for wireless communication according to another embodiment of the present application.

[0075] Figure 7 It is a flowchart of a method provided by a first node used for wireless communication according to another embodiment of the present application.

[0076] Figure 8 It is a flowchart of a method provided by a first node used for wireless communication according to another embodiment of the present application.

[0077] Fig. 9 It is a flowchart of a method provided by a first node used for wireless communication according to another embodiment of the present application.

[0078] Fig.10 This is an example diagram of a possible signal forwarding method of NCR provided in an embodiment of the present application.

[0079] Fig.11 It is a schematic diagram of the structure of a node used for wireless communication provided by an embodiment of the present application.

[0080] Fig.12 It is a schematic diagram of the structure of a node used for wireless communication provided by another embodiment of the present application.

[0081] Fig.13 It is a schematic structural diagram of the device of an embodiment of the present application.

[0082] Fig.14 A schematic diagram of the hardware modules of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0083] Communication system architecture

[0084] Figure 1 1 is a diagram showing an example of a system architecture of a wireless communication system 100 to which an embodiment of the present application can be applied. The wireless communication system 100 may include a network device 110 and a user device 120. The network device 110 may be a device that communicates with the user device 120. The network device 110 may provide communication coverage for a specific geographical area, and may communicate with the user device 120 located in the coverage area.

[0085] Figure 1 A network device and a user device are shown exemplarily, and optionally, the wireless communication system 100 may include one or more network devices 110 and / or one or more user devices 120. For one network device 110, the one or more user devices 120 may all be located within the network coverage of the network device 110, or may all be located outside the network coverage of the network device 110, or may partly be located within the coverage of the network device 110, and the other partly be located outside the network coverage of the network device 110, which is not limited in the embodiments of the present application.

[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 the embodiments of the present application.

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

[0088] The user equipment in the embodiment of the present application may 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 embodiment of the present application may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The user equipment in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a vehicle, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. For example, the user equipment can act as a dispatching entity that provides sidelink signals between user equipment in vehicle-to-everything (V2X) or device-to-device (D2D) communications. For example, a cell phone and a car communicate with each other using sidelink signals. A cell phone and a smart home device communicate with each other without relaying the communication signal through a base station. Alternatively, the user equipment can be used to act as a base station.

[0089] The network device in the embodiment of the present application may be a device for communicating with a user device, and the network device may also be referred to as an access network device or a radio access network device, such as a base station. The network device in the embodiment of the present application may refer to a radio access network (RAN) node (or device) that connects a user device to a wireless network. The base station may broadly cover the following various names, or be replaced with the following names, such as: Node B, evolved base station

[0090] (evolved NodeB, eNB), next generation NodeB (next generation NodeB, gNB), relay station, access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), master station MeNB, auxiliary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (access piont, AP), transmission node, transceiver node, baseband unit (base band unit, BBU), radio frequency remote unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit, AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs the base station function in device-to-device D2D, V2X, machine-to-machine (M2M) communications, a network-side device in a 6G network, and a device that performs the base station function in a future communication system. The base station can support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form used by the network device.

[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 based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0092] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

[0093] The network equipment and user equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network equipment and user equipment are located.

[0094] New network nodes in communication systems

[0095] With the trend of network densification and millimeter wave communication applications, some new network nodes are gradually being proposed to improve network coverage and support the rapidly growing number of users. Such new network nodes can increase the flexibility of network deployment and thus have received increasing attention.

[0096] For example, NR Rel-16 (release-16) introduced the integrated access and backhaul (IAB) node. The IAB node was further enhanced in NR Rel-17 (release-17). The biggest feature of the IAB node is that it does not require a wired backhaul link between network nodes.

[0097] For example, wireless repeaters, which are widely used in 2G, 3G and 4G systems, are also a 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. Although this type of wireless repeater has simple functions and high cost-effectiveness, it cannot be flexibly adjusted according to the actual situation of the communication system, so the performance is poor. Compared with traditional wireless repeaters, some communication systems have introduced NCR. NCR adds the ability to receive and process side control information (SCI) from network equipment. Based on SCI, NCR can efficiently perform the amplification and forwarding functions of signals and reduce unnecessary noise amplification, so that the reception and transmission of NCR have better spatial directivity. NR Rel-18 (release-18) version carried out the study item (SI) of NCR. In September 2022, 3GPP approved RP-222673 and started the "NR NCR" work item (WI) in NR Rel-18, thus officially starting the standardization work of NCR in the NR system.

[0098] According to NCR's research report (3GPP TR38.867), Figure 2 As shown, NCR 130 mainly includes two functional modules: NCR-mobile termination (NCR-MT) 131 and NCR-forwarding (NCR-Fwd) 132. NCR-MT 131 can be responsible for exchanging SCI with base station 110 through 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 through backhaul link (B-link) and access link (A-link). The behavior of NCR-Fwd 132 is controlled by SCI from base station 110. Among them, SCI may include one or more of the following information: beam information, timing information, uplink and downlink time division duplex configuration (UL-DL TDD configuration) information, NCR-Fwd switch information (ON-OFF information), and NCR-Fwd power control information (power control information).

[0099] In a communication system, a base station may periodically broadcast a synchronization signal block; accordingly, a user equipment may receive the synchronization signal block broadcast by the base station, thereby accessing the communication system based on the received synchronization signal block. It should be noted that the synchronization signal block mentioned in the embodiment of the present application may 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, the user equipment does not directly receive the synchronization signal blocks sent by the base station, but receives the synchronization signal blocks forwarded by the relay node. For example, if NCR is deployed in the communication system (see Figure 2 ), the NCR can receive the synchronization signal block sent by the base station and forward the synchronization signal block to the user equipment within the coverage area of ​​the NCR.

[0101] In order to increase the coverage of the synchronization signal block, the base station may send multiple synchronization signal blocks in a beam sweeping manner. However, since the relay node may be located within the coverage of part of the base station's beam, the relay node will usually only forward the synchronization signal block corresponding to the part of the beam, which may reduce the probability of the user equipment successfully accessing the communication system.

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

[0103] Method 1: If Figure 3 As shown, NCR-Fwd can use a wide beam to forward the synchronization signal block (i.e., Figure 3 This method can increase the coverage of the synchronization signal block, but due to the use of wide waves, the signal quality of Fssbi received by the user equipment 120 is poor.

[0104] Method 2: If Figure 4 As shown, NCR-Fwd can use the narrow beam corresponding to Fssbi to forward the synchronization signal block (ie, Figure 4 The beamforming gain of the narrow beam is large, so the reception quality of the signal can be improved. However, since the coverage of the narrow beam is small, the user equipment 120 may not be in the coverage of the narrow beam, so that the user equipment 120 cannot receive the Fssbi forwarded by the NCR-Fwd.

[0105] In response to the above problems, the node with relay function provided in the embodiment of the present application does not simply forward the one or more synchronization signal blocks after receiving the one or more synchronization signal blocks, but sends one or more synchronization signal blocks (hereinafter referred to as the first type of synchronization signal blocks) that are different from the one or more synchronization signal blocks (hereinafter referred to as the first type of synchronization signal blocks), thereby achieving one or more of the following purposes: 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 method and device provided by the present application are illustrated below by multiple embodiments or examples. In the case of no conflict, different features in these embodiments or examples can be combined with each other to obtain new embodiments or examples, and these new embodiments or examples also belong to the protection scope of the present application.

[0107] Figure 5 The method 500 provided by the embodiment of the present application for a first node used for wireless communication is shown. The first node may be any type of node with a relay or synchronization signal block forwarding function in a communication system.

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

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

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

[0111] As an embodiment, the first node may be a user equipment, that is, the user equipment may serve as a relay node to forward synchronization signal blocks.

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

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

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

[0115] As an embodiment, any synchronization signal block among the one or more first-type synchronization signal blocks is an SSB.

[0116] As an embodiment, 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 embodiment, the one or more first-type synchronization signal blocks are used to determine the index of any second-type synchronization signal block among the one or more second-type synchronization signal blocks.

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

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

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

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

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

[0123] As an embodiment, the one or more second-type synchronization signal blocks include multiple second-type synchronization signal blocks.

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

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

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

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

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

[0129] As an embodiment, 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 embodiment, 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 embodiment, 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 embodiment, the one or more second-type synchronization signal blocks may be determined based on configuration information of the synchronization signal blocks pre-stored by the first node (such as time domain resource configuration information).

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

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

[0135] As an 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 include the same MIB information.

[0136] As an embodiment, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0137] The embodiment of the present application does not specifically limit the definition of the first period.

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

[0139] As an embodiment, the first period may be a half frame.

[0140] As an embodiment, the first period may be equal to 0.5 ms.

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

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

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

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

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

[0146] As an embodiment, the second link is a link between NCR-Fwd and user equipment.

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

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

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

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

[0151] As mentioned above, any of the one or more first-type synchronization signal blocks may include first information (such as MIB information). Accordingly, any 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 include the same system information (such as MIB information).

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

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

[0154] As an embodiment, the first period may be a half frame.

[0155] As an embodiment, the first period may be equal to 0.5 ms.

[0156] As an 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 of the one or more first-type synchronization signal blocks. There may be multiple ways to define that at least one of the one or more second-type synchronization signal blocks is different from any of the one or more first-type synchronization signal blocks. Several possible ways of definition are given below.

[0158] Definition 1

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

[0160] Definition 2

[0161] The multiple candidate synchronization signal blocks include multiple PBCHs respectively. The multiple PBCHs carry multiple DMRSs respectively, and the sequence index of any DMRS in the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indexes (for example, the multiple sequence indexes of the multiple DMRSs correspond to the multiple candidate synchronization signal block indexes one by one). Any second-type synchronization signal block in the one or more second-type synchronization signal blocks is one of the multiple candidate synchronization signal blocks. The sequence index of the DMRS of the PBCH included in 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 the PBCH included in any first-type synchronization signal block in the one or more first-type synchronization signal blocks.

[0162] Exemplarily, when the number of the multiple candidate synchronization signal block indexes is not greater than 8, the multiple sequence indexes of the multiple DMRSs correspond one-to-one to the multiple candidate synchronization signal block indexes.

[0163] Definition 3

[0164] The multiple candidate synchronization signal blocks include multiple PBCHs respectively. The multiple PBCHs carry multiple DMRSs respectively, and the multiple PBCHs include multiple first-category information respectively. The first-category information may include, for example, a payload of the PBCH.

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

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

[0167] Alternatively, the sequence index of the DMRS in 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 in the PBCH included in any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

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

[0169] Definition 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 of the one or more first-type synchronization signal blocks.

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

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

[0173] As an embodiment, the multiple candidate synchronization signal blocks correspond to multiple time-frequency resources respectively.

[0174] As an embodiment, the multiple time-frequency resources correspond one-to-one to the multiple candidate synchronization signal block indexes.

[0175] As an embodiment, 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0176] See also Figure 6 The method 600 for a first node used for wireless communication provided in an embodiment of the present application may further include step S610, that is, receiving first configuration information. The first configuration information may include parameters of multiple candidate synchronization signal blocks.

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

[0178] As an embodiment, the first configuration information may indicate one or more of the following of multiple candidate synchronization signal blocks: resource configuration information, carried DMRS, time slot index (slot index), and half-frame index (half-frame index).

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

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

[0181] As an embodiment, the first configuration information includes ServingCellConfigCommon.

[0182] As an embodiment, the first configuration information is acquired by the first node when initially accessing the communication system.

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

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

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

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

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

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

[0189] As an 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 of the one or more first-type synchronization signal blocks. If the second configuration information includes an invalid indication, the first node does not send the one or more second-type synchronization signal blocks, but directly forwards the one or more first-type synchronization signal blocks.

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

[0191] As an embodiment, the number of the 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 the one or more second-type synchronization signal blocks can be configured through the second configuration information.

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

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

[0194] As an 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 embodiment, the second configuration information is used to determine the first type of information (such as the payload of the PBCH) in the PBCH included in the second type of synchronization signal block.

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

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

[0198] By introducing the second configuration information mentioned above, the transmission mode of the synchronization signal can be flexibly adjusted according to actual conditions.

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

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

[0201] As an embodiment, the first signaling includes SCI.

[0202] As an embodiment, the first signaling includes an RRC information.

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

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

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

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

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

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

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

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

[0211] As an embodiment, the first signaling is used to determine the 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 an embodiment, the first signaling is used to determine the one or more first-type beams from a first beam set, wherein the first beam set includes at least two first-type beams.

[0213] As an 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 embodiment, the one or more first-type beams are respectively used to receive the one or more first-type synchronization signal blocks.

[0215] As an embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively 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 an embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

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

[0218] As an 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 respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0219] As an 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 respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to send signals on the first link.

[0220] As an 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 embodiment, 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 embodiment of the present 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, antenna port.

[0223] Combination of the above Figures 5 to 8 , describes in detail the method of the first node used for wireless communication provided by the embodiment of the present application from the perspective of the first node. Fig. 9 , a method for a second node used for wireless communication provided by an embodiment of the present application is described from the perspective of a second node. The second node may be a node in a communication system that has the function of initiating or broadcasting a synchronization signal block. As an embodiment, the second node may be a base station. It should be understood that the descriptions of the first node and the second node correspond to each other, and therefore, the parts not described in detail may refer to the foregoing.

[0224] Fig. 9 It is a schematic flowchart of a method provided by an embodiment of the present application for a second node used for wireless communication. Fig. 9 The method 900 includes step S910.

[0225] In step S910, one or more first-type synchronization signal blocks are sent. Any of the one or more first-type synchronization signal blocks includes first information; and an index of any of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes.

[0226] The one or more first-class synchronization signal blocks are used to trigger the first node to send one or more second-class synchronization signal blocks, and any second-class synchronization signal block among the one or more second-class synchronization signal blocks includes the first information; the index of any second-class synchronization signal block among the one or more second-class synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-class synchronization signal block among the one or more second-class synchronization signal blocks is different from any first-class synchronization signal block among the one or more first-class synchronization signal blocks.

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

[0228] As an embodiment, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0229] As an embodiment, the multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, and the sequence index of any DMRS among the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

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

[0231] As an embodiment, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

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

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

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

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

[0236] As an example, Fig. 9 The method may also 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 an embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0238] As an 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 respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0239] The embodiments of the present application are described in more detail below with reference to specific examples. Fig.10 In the example, NCR corresponds to the first node mentioned above, gNB corresponds to the second node mentioned above, and SSB corresponds to the synchronization signal block mentioned above. It should be noted that Fig.10 The examples are only intended to help those skilled in the art understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific values ​​or specific scenarios illustrated. Fig.10 It is obvious that various equivalent modifications or changes can be made, and such modifications or changes also fall within the scope of the embodiments of the present application.

[0240] See also Fig.10, considering that the MIB information carried by the multiple SSBs sent by the gNB is the same except for the time domain resource indication, the sending of multiple SSBs is similar to repeated sending. Since the NCR-MT has received and decoded the SSB sent by the gNB during the initial access, the sending period and resource configuration of the SSB can also be known through the received system information. The configuration information obtained by the NCR-MT through the initial access can be pre-stored in the NCR. When the NCR-Fwd detects SSBi from the B-link, it can reconstruct multiple Fssbs on the A-link through the pre-stored configuration information. These reconstructed Fssbs correspond to the content carried by the multiple SSBs configured by the gNB and the occupied time and frequency resources. Then, the NCR-Fwd can send these reconstructed Fssbs by beam scanning, so that the user equipment can detect the Fssbj with better quality from the multiple Fssbs to perform synchronization and initial access. It should be understood that the Fssbj can be different from the SSBi or the same as the SSBi.

[0241] Further, to ensure that NCR is transparent to the user equipment, the Fssbs reconstructed and forwarded by NCR-Fwd may be a subset (such as a true subset) of the multiple SSBs configured by the gNB. The number of Fssbs reconstructed and forwarded by NCR-Fwd is not greater than the number of SSBs configured by the gNB, and the number of Fssbs reconstructed and forwarded by NCR-Fwd may 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 Fssbs through one SSB, it requires NCR to pre-store the signals carried by multiple SSBs (for example, 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 (enable / disable) through SCI signaling or OAM configuration.

[0243] Combination of the above Figures 1 to 10 , describes the method embodiment of the present application in detail, and the following is combined with Figures 11 to 14 , describes the device embodiment of the present application in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0244] Fig.11 1 is a schematic diagram of a node used for wireless communication provided by an embodiment of the present application. The node 1100 may be the first node mentioned above. The first node may include a first receiving module 1110 and a first sending module 1120.

[0245] The first receiving module 1110 can be used to receive one or more first-class synchronization signal blocks, and any one of the one or more first-class synchronization signal blocks includes first information; the index of any one of the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal block indexes.

[0246] The first sending module 1120 can be used to send one or more second-class synchronization signal blocks, any second-class synchronization signal block among the one or more second-class synchronization signal blocks includes the first information; the index of any second-class synchronization signal block among the one or more second-class synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-class synchronization signal block among the one or more second-class synchronization signal blocks is different from any first-class synchronization signal block among the one or more first-class synchronization signal blocks.

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

[0248] As an embodiment, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0249] As an embodiment, the multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels PBCH, the multiple PBCHs respectively carry multiple demodulation reference signals DMRS, and the sequence index of any DMRS among the multiple DMRS corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

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

[0251] As an embodiment, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

[0252] As an embodiment, the first node also includes: a second receiving module, used to receive first configuration information; wherein the first configuration information includes parameters of the multiple candidate synchronization signal blocks.

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

[0254] As an embodiment, the second configuration information is configured by side control information SCI, or the second configuration information is configured by operation maintenance management OAM.

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

[0256] As an embodiment, the first node also includes: a fourth receiving module, used to receive 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 an embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0258] As an 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 respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0259] Fig.12 12 is a schematic diagram of a node used for wireless communication provided by another embodiment of the present application. The node 1200 may be the second node mentioned above. The second node may include a first sending module 1210.

[0260] The first sending module 1210 may be used to send one or more first-type synchronization signal blocks, wherein any of the one or more first-type synchronization signal blocks includes first information; and an index of any of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes;

[0261] The one or more first-class synchronization signal blocks are used to trigger the first node to send one or more second-class synchronization signal blocks, and any second-class synchronization signal block among the one or more second-class synchronization signal blocks includes the first information; the index of any second-class synchronization signal block among the one or more second-class synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-class synchronization signal block among the one or more second-class synchronization signal blocks is different from any first-class synchronization signal block among the one or more first-class synchronization signal blocks.

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

[0263] As an embodiment, any first-class synchronization signal block among the one or more first-class synchronization signal blocks is one of multiple candidate synchronization signal blocks in a first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

[0264] As an embodiment, the multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels PBCH, the multiple PBCHs respectively carry multiple demodulation reference signals DMRS, and the sequence index of any DMRS among the multiple DMRS corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

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

[0266] As an embodiment, 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 first-type synchronization signal block of the one or more first-type synchronization signal blocks.

[0267] As an embodiment, the second node may also include: a second sending module, used to send first configuration information; wherein the first configuration information includes parameters of the multiple candidate synchronization signal blocks.

[0268] As an embodiment, the second node may also include: 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-class synchronization signal blocks is different from any one of the one or more first-class synchronization signal blocks, or, the second configuration information is used to determine the number of the one or more second-class synchronization signal blocks.

[0269] As an embodiment, the second configuration information is configured by side control information SCI, or the second configuration information is configured by operation maintenance management OAM.

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

[0271] As an embodiment, the second node also includes: a fourth sending module, used to send 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 an embodiment, the first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

[0273] As an 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 respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

[0274] Fig.13 It is a schematic structural diagram of the device of an embodiment of the present application. Fig.13 The dotted line in the figure indicates that the unit or module is optional. The device 1300 can be used to implement the method described in the above method embodiment. The device 1300 can be a chip or a user equipment.

[0275] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the method embodiment above. 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 also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0276] The apparatus 1300 may further include one or more memories 1320. The memory 1320 stores a program, which can be executed by the processor 1310, so that the processor 1310 executes the method described in the above method embodiment. The memory 1320 may be independent of the processor 1310 or integrated in the processor 1310.

[0277] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips through the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips through the transceiver 1330.

[0278] Fig.14 A schematic diagram of the hardware modules of a communication device provided in an embodiment of the present application. Specifically, Fig.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 transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive 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 receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit 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, the upper layer data packets from the core network or the upper layer data packets from the data source 477 are provided to the controller / processor 475. The core network and the data source 477 represent all the 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 to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for the retransmission of 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). The transmit processor 416 implements coding and interleaving to facilitate forward error correction at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying, quadrature phase shift keying, M phase shift keying, M quadrature amplitude modulation). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform to generate a physical channel carrying a time domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency 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 multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation 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 receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream with the first communication device 450 as the destination. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving 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 on 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 the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing 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 the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0283] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, the upper layer data packets are provided to the controller / processor 459 using the data source 467. The data source 467 represents all the protocol layers above the L2 layer. Similar to the transmission function 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 logical and transport channels, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the 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 reception 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 a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the first communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

[0285] As an embodiment, the first communication device 450 apparatus 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 together with the at least one processor, and the first communication device 450 apparatus at least: receives a first synchronization signal block, the index of the first synchronization signal block is one of multiple candidate synchronization signal block indexes; sends a first preamble group, the first preamble group includes multiple preambles; a first random access channel opportunity group includes multiple random access channel opportunities, the multiple random access channel opportunities in the first random access channel opportunity group are respectively used to send the multiple preambles in the first preamble group; any two random access channel opportunities in the first random access channel opportunity group are orthogonal in the time domain; wherein the multiple candidate synchronization signal block indexes are mapped to multiple random access channel opportunity groups according to a first mapping order, and the first random access channel opportunity group is one of the multiple random access channel opportunity groups; the first random access channel opportunity group corresponds to a first opportunity group type, and the first opportunity group type is one of multiple candidate opportunity group types; the index of the first synchronization signal block, the first opportunity group type and the first mapping order are used to determine the first random access channel opportunity group.

[0286] As an embodiment, the first communication device 450 apparatus includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: receiving a first synchronization signal block, the index of the first synchronization signal block is one of a plurality of candidate synchronization signal block indexes; sending a first preamble group, the first preamble group including a plurality of preambles; a first random access channel opportunity group including a plurality of random access channel opportunities, the plurality of random access channel opportunities in the first random access channel opportunity group being respectively used to send the plurality of preambles in the first preamble group; any two random access channel opportunities in the first random access channel opportunity group are orthogonal in the time domain; wherein the plurality of candidate synchronization signal block indexes are mapped to a plurality of random access channel opportunity groups according to a first mapping order, the first random access channel opportunity group being one of the plurality of random access channel opportunity groups; the first random access channel opportunity group corresponds to a first opportunity group type, the first opportunity group type being one of a plurality of candidate opportunity group types; the index of the first synchronization signal block, the first opportunity group type and the first mapping order are used to determine the first random access channel opportunity group.

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

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

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

[0290] As an embodiment, the first communication device 450 is a user equipment supporting V2X.

[0291] As an embodiment, the first communication device 450 is a user equipment supporting D2D.

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

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

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

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

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

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

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

[0299] The embodiment of the present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the node provided in the embodiment of the present application, and the program enables the computer to execute the method executed by the node in each embodiment of the present application.

[0300] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the node provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the node in each embodiment of the present application.

[0301] The embodiment of the present application also provides a computer program. The computer program can be applied to the node provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the node in each embodiment of the present application.

[0302] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0303] In the embodiments of the present application, the "indication" mentioned can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0304] In the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0305] In the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship of indication and being indicated, configuration and being configured, etc.

[0306] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a user device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0307] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0308] In the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0309] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0310] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0311] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0312] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0313] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0314] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for a first node used for wireless communication, characterized in that: The first node is a network control relay NCR, and the method includes: receiving one or more first-type synchronization signal blocks, wherein any of the one or more first-type synchronization signal blocks comprises first information; and an index of any of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; One or more second-type synchronization signal blocks are sent, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks includes the first information; the index of any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

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

3. The method according to claim 1 or 2, characterized in that: Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of multiple candidate synchronization signal blocks in the first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

4. The method according to claim 3, characterized in that The multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels PBCH, and the multiple PBCHs respectively carry multiple demodulation reference signals DMRS, and the sequence index of any DMRS among the multiple DMRS corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

5. The method according to claim 3, characterized in that: The multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

6. The method according to any one of claims 1 to 5, 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 of the one or more first-type synchronization signal blocks.

7. The method according to any one of claims 3 to 6, characterized in that: include: receiving first configuration information; The first configuration information includes parameters of the multiple candidate synchronization signal blocks.

8. The method according to any one of claims 1 to 7, characterized in that include: receiving second configuration information; The second configuration information is used to determine whether at least one of the one or more second-class synchronization signal blocks is different from any of the one or more first-class synchronization signal blocks, or the second configuration information is used to determine the number of the one or more second-class synchronization signal blocks, or the second configuration information is used to determine the one or more second-class synchronization signal blocks.

9. The method according to claim 8, characterized in that The second configuration information is configured by side control information SCI, or the second configuration information is configured by operation maintenance management OAM.

10. The method according to any one of claims 1 to 9, characterized in that Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

11. The method according to any one of claims 1 to 10, characterized in that include: receiving a first signaling; 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.

12. The method according to claim 11, characterized in that The first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

13. The method according to claim 11 or 12, characterized in that: The first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

14. A method for a second node used in wireless communication, characterized in that: include: Sending one or more first-type synchronization signal blocks, wherein any one of the one or more first-type synchronization signal blocks includes first information; and an index of any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; The one or more first-class synchronization signal blocks are used to trigger the first node to send one or more second-class synchronization signal blocks, and any second-class synchronization signal block among the one or more second-class synchronization signal blocks includes the first information; the index of any second-class synchronization signal block among the one or more second-class synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-class synchronization signal block among the one or more second-class synchronization signal blocks is different from any first-class synchronization signal block among the one or more first-class synchronization signal blocks, and the first node is a network control relay NCR.

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

16. The method according to claim 14 or 15, characterized in that Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of multiple candidate synchronization signal blocks in the first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

17. The method according to claim 16, characterized in that The multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels PBCH, and the multiple PBCHs respectively carry multiple demodulation reference signals DMRS, and the sequence index of any DMRS among the multiple DMRS corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

18. The method according to claim 16, characterized in that The multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

19. The method according to any one of claims 14 to 18, 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 of the one or more first-type synchronization signal blocks.

20. The method according to any one of claims 16 to 19, characterized in that include: Sending first configuration information; The first configuration information includes parameters of the multiple candidate synchronization signal blocks.

21. The method according to any one of claims 14 to 20, characterized in that include: Sending second configuration information; 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 first-type synchronization signal block 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.

22. The method according to claim 21, characterized in that The second configuration information is configured by side control information SCI, or the second configuration information is configured by operation maintenance management OAM.

23. The method according to any one of claims 14 to 22, characterized in that Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

24. The method according to any one of claims 14 to 23, characterized in that include: Sending a first signaling; 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.

25. The method according to claim 24, characterized in that The first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

26. The method according to claim 24 or 25, characterized in that The first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

27. A node used for wireless communication, characterized in that: The node is a first node, the first node is a network control relay NCR, and the first node includes: A first receiving module is configured to receive one or more first-type synchronization signal blocks, wherein any one of the one or more first-type synchronization signal blocks includes first information; and an index of any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; A first sending module is used to send one or more second-type synchronization signal blocks, wherein any second-type synchronization signal block among the one or more second-type synchronization signal blocks includes the first information; the index of any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

28. The node according to claim 27, characterized in that The index of at least one of the one or more second-type synchronization signal blocks is different from the index of any of the one or more first-type synchronization signal blocks.

29. The node according to claim 27 or 28, characterized in that Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of multiple candidate synchronization signal blocks in the first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

30. The node according to claim 29, characterized in that The multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels PBCH, and the multiple PBCHs respectively carry multiple demodulation reference signals DMRS, and the sequence index of any DMRS among the multiple DMRS corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

31. The node according to claim 29, characterized in that The multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

32. A node according to any one of claims 27 to 31, 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 of the one or more first-type synchronization signal blocks.

33. A node according to any one of claims 29 to 32, characterized in that: include: A second receiving module, used to receive first configuration information; The first configuration information includes parameters of the multiple candidate synchronization signal blocks.

34. A node according to any one of claims 27 to 33, characterized in that: include: A third receiving module, used to receive second configuration information; 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 first-type synchronization signal block 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.

35. The node according to claim 34, characterized in that The second configuration information is configured by side control information SCI, or the second configuration information is configured by operation maintenance management OAM.

36. A node according to any one of claims 27 to 35, characterized in that: Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

37. A node according to any one of claims 27 to 36, characterized in that: include: A fourth receiving module, configured to receive a first signaling; 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.

38. The node according to claim 37, characterized in that The first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

39. The node according to claim 37 or 38, characterized in that The first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

40. A node used for wireless communication, characterized in that: The node is a second node, and the second node includes: A first sending module, configured to send one or more first-type synchronization signal blocks, wherein any one of the one or more first-type synchronization signal blocks includes first information; and an index of any one of the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; The one or more first-class synchronization signal blocks are used to trigger the first node to send one or more second-class synchronization signal blocks, and any second-class synchronization signal block among the one or more second-class synchronization signal blocks includes the first information; the index of any second-class synchronization signal block among the one or more second-class synchronization signal blocks is one of the multiple candidate synchronization signal block indexes, and at least one second-class synchronization signal block among the one or more second-class synchronization signal blocks is different from any first-class synchronization signal block among the one or more first-class synchronization signal blocks, and the first node is a network control relay NCR.

41. The node according to claim 40, characterized in that The index of at least one of the one or more second-type synchronization signal blocks is different from the index of any of the one or more first-type synchronization signal blocks.

42. The node according to claim 40 or 41, characterized in that Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of multiple candidate synchronization signal blocks in the first cycle, and the multiple candidate synchronization signal block indexes respectively correspond to the multiple candidate synchronization signal blocks in the first cycle.

43. The node according to claim 42, characterized in that The multiple candidate synchronization signal blocks respectively include multiple physical broadcast channels PBCH, and the multiple PBCHs respectively carry multiple demodulation reference signals DMRS, and the sequence index of any DMRS among the multiple DMRS corresponds to at least one of the multiple candidate synchronization signal block indices; any second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the multiple 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 first-type synchronization signal block among the one or more first-type synchronization signal blocks.

44. The node according to claim 42, characterized in that The multiple candidate synchronization signal blocks respectively include multiple PBCHs, the multiple PBCHs respectively carry multiple DMRSs, the multiple PBCHs respectively include multiple first-category information, and the sequence index of the first-category information and DMRS included in any PBCH among the multiple PBCHs corresponds to one of the multiple candidate synchronization signal block indexes; the first-category information in the PBCH or the sequence index of the DMRS included in at least one of the one or more second-category synchronization signal blocks is different from the first-category information in the PBCH or the sequence index of the DMRS included in any one of the one or more first-category synchronization signal blocks.

45. A node according to any one of claims 40 to 44, 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 of the one or more first-type synchronization signal blocks.

46. ​​A node according to any one of claims 42 to 45, characterized in that include: A second sending module, used for sending first configuration information; The first configuration information includes parameters of the multiple candidate synchronization signal blocks.

47. A node according to any one of claims 40 to 46, characterized in that include: A third sending module, used for sending second configuration information; 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 first-type synchronization signal block 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.

48. The node according to claim 47, characterized in that The second configuration information is configured by side control information SCI, or the second configuration information is configured by operation maintenance management OAM.

49. A node according to any one of claims 40 to 48, characterized in that Any first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on the first link, and any second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on the second link.

50. The node according to any one of claims 40-49, characterized in that include: A fourth sending module, configured to send a first signaling; 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.

51. The node according to claim 50, characterized in that The first signaling includes one or more first-type beam identifiers, and the one or more first-type beam identifiers respectively correspond to one or more first-type beams, and the one or more first-type beams are respectively used to send signals on the first link.

52. The node according to claim 50 or 51, characterized in that The first signaling includes one or more first-class frequency domain resource identifiers, and the one or more first-class frequency domain resource identifiers respectively correspond to one or more first-class frequency domain resources, and the one or more first-class frequency domain resources are respectively used to transmit the one or more first-class synchronization signal blocks.

53. A node used for wireless communication, characterized in that: It includes a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the node executes the method as described in any one of claims 1-13 or 14-26.

54. A device, characterized in that It comprises a processor, which is used to call a program from a memory so that the device executes the method as described in any one of claims 1-13 or 14-26.

55. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory, so that a device equipped with the chip executes the method as described in any one of claims 1-13 or 14-26.

56. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1-13 or 14-26.

Images