Method and apparatus for a node used for wireless communications - Patents.com

Abstract

A method and apparatus are provided for a first node used for wireless communication, the method including: receiving one or more first-type synchronization signal blocks, where every first-type synchronization signal block among the one or more first-type synchronization signal blocks includes first information and an index of every first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; and sending one or more second-type synchronization signal blocks, where every second-type synchronization signal block among the one or more second-type synchronization signal blocks includes the first information and an index of every second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of 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 every first-type synchronization signal block among the one or more first-type synchronization signal blocks.

Description

[Technical Field]

[0001] The present application relates to the field of communications technologies, and more particularly to methods and apparatus for nodes used for wireless communications. [Background technology]

[0002] In the trend of network densification and millimeter wave (mmW) communication applications, several new network nodes have been gradually proposed to improve the network coverage capability and support the rapid increase in the number of users. Such new network nodes have the potential to enhance the flexibility of network deployment and therefore have attracted increasing attention.

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

[0004] In order to improve the coverage performance of the synchronization signal block, the base station may transmit multiple synchronization signal blocks in a beam sweeping manner. In a general scenario in which a relay node is deployed, when the base station transmits multiple synchronization signal blocks in a beam sweeping manner, the relay node may only be located within the coverage of some beams sent by the base station, so the relay node can only forward some of the synchronization signal blocks. Therefore, the coverage of the relay node may be affected or the power consumption of the relay node may increase, which is not conducive to the UE maintaining system synchronization, beam measurement, and mobility management, and reduces the probability of the UE successfully accessing the communication system. Summary of the Invention [Means for solving the problem]

[0005] SUMMARY OF THE INVENTION Embodiments of the present application provide methods and apparatuses for nodes used for wireless communication to improve the operational efficiency of a communication system.

[0006] According to a first aspect, there is provided a method for a node used for wireless communication, the method comprising: receiving one or more first-type synchronization signal blocks, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks includes first information and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indices; and transmitting one or more second-type synchronization signal blocks, wherein each second-type synchronization signal block among the one or more second-type synchronization signal blocks includes the first information and an index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indices, 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.

[0007] In one implementation, 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] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

[0009] In one implementation, the plurality of candidate synchronization signal blocks each include a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), and a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes. Each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH included in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a 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] In one implementation, each of the multiple candidate synchronization signal blocks includes multiple PBCHs, each of the multiple PBCHs carrying multiple DMRSs, each of the multiple PBCHs including multiple first type information, both the first type information and the sequence index of the DMRS included in each PBCH among the multiple PBCHs together correspond to one of the multiple candidate synchronization signal block indexes, and the first type information or the sequence index of the DMRS in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information or the sequence index of the PBCH included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

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

[0012] In one implementation, the method further includes receiving first configuration information, the first configuration information including parameters of a plurality of candidate synchronization signal blocks.

[0013] In one implementation, the method further includes receiving second configuration information, wherein the second configuration information is used to determine whether at least one 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, or the second configuration information is used to determine a quantity of the one or more second-type synchronization signal blocks, or the second configuration information is used to determine the one or more second-type synchronization signal blocks.

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

[0015] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0016] In one implementation, the method further includes receiving first signaling, the first signaling being transmitted on a third link, and the first signaling being used to determine one or more first type synchronization signal blocks.

[0017] In one implementation, the first signaling includes one or more first-type beam indices, each corresponding to one or more first-type beams, each used to transmit a signal on the first link.

[0018] In one implementation, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

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

[0020] In one implementation, 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] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

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

[0023] In one implementation, each of the multiple candidate synchronization signal blocks includes multiple PBCHs, each of the multiple PBCHs carrying multiple DMRSs, each of the multiple PBCHs including multiple first type information, both the first type information and the DMRS sequence index included in each PBCH among the multiple PBCHs together correspond to one of the multiple candidate synchronization signal block indexes, and the first type information or DMRS sequence index in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information or DMRS sequence index in the PBCH included in any of the first type synchronization signal blocks among the one or more first type synchronization signal blocks.

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

[0025] In one implementation, the method further includes transmitting first configuration information, where the first configuration information includes parameters of a plurality of candidate synchronization signal blocks.

[0026] In one implementation, the method further includes transmitting second configuration information, wherein the second configuration information is used to determine whether 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, or the second configuration information is used to determine the quantity of the one or more second-type synchronization signal blocks.

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

[0028] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0029] In one implementation, the method further includes transmitting first signaling, the first signaling being transmitted on a third link, and the first signaling being used to determine one or more first type synchronization signal blocks.

[0030] In one implementation, the first signaling includes one or more first-type beam indices, each corresponding to one or more first-type beams, each used to transmit a signal on the first link.

[0031] In one implementation, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0032] According to a third aspect, there is provided a node used for wireless communication, the node being a first node, the first node including: a first receiving module configured to receive one or more first-type synchronization signal blocks, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks includes first information and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; and a first transmitting module configured to transmit one or more second-type synchronization signal blocks, wherein each second-type synchronization signal block among the one or more second-type synchronization signal blocks includes the first information and an index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of 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.

[0033] In one implementation, 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] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

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

[0036] In one implementation, each of the multiple candidate synchronization signal blocks includes multiple PBCHs, each of the multiple PBCHs carrying multiple DMRSs, each of the multiple PBCHs including multiple first type information, both the first type information and the sequence index of the DMRS included in each PBCH among the multiple PBCHs together correspond to one of the multiple candidate synchronization signal block indexes, and the first type information or the sequence index of the DMRS in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information or the sequence index of the PBCH included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

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

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

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

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

[0041] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0042] In one implementation, the first node includes a fourth receiving module configured to receive first signaling, the first signaling being transmitted over a third link, the first signaling being used to determine one or more first-type synchronization signal blocks.

[0043] In one implementation, the first signaling includes one or more first-type beam indices, each corresponding to one or more first-type beams, each used to transmit a signal on the first link.

[0044] In one implementation, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0045] According to a fourth aspect, there is provided a node used for wireless communication, the node being a second node, the second node comprising: a first transmitting module configured to transmit one or more first-type synchronization signal blocks, each first-type synchronization signal block among the one or more first-type synchronization signal blocks comprising first information, an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indexes, the one or more first-type synchronization signal blocks being used to trigger the first node to transmit one or more second-type synchronization signal blocks, each second-type synchronization signal block among the one or more second-type synchronization signal blocks comprising the first information, an index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks being one of a plurality of 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.

[0046] In one implementation, 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] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

[0048] In one implementation, each of the plurality of candidate synchronization signal blocks includes a plurality of PBCHs, each of the plurality of PBCHs carries a plurality of DMRSs, and a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes. Each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH included in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a 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] In one implementation, each of the multiple candidate synchronization signal blocks includes multiple PBCHs, each of the multiple PBCHs carrying multiple DMRSs, each of the multiple PBCHs including multiple first type information, both the first type information and the sequence index of the DMRS included in each PBCH among the multiple PBCHs together correspond to one of the multiple candidate synchronization signal block indexes, and the first type information or the sequence index of the DMRS in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information or the sequence index of the PBCH included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

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

[0051] In one implementation, the second node further includes a second transmitting module configured to transmit first configuration information, the first configuration information including parameters of a plurality of candidate synchronization signal blocks.

[0052] In one implementation, the second node further includes a third transmitting module configured to transmit second configuration information, wherein the second configuration information is used to determine whether 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, or the second configuration information is used to determine a quantity of the one or more second-type synchronization signal blocks.

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

[0054] In one implementation, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0055] In one implementation, the second node includes a fourth transmitting module configured to transmit first signaling, the first signaling being transmitted over the third link, the first signaling being used to determine one or more first-type synchronization signal blocks.

[0056] In one implementation, the first signaling includes one or more first-type beam indices, each corresponding to one or more first-type beams, each used to transmit a signal on the first link.

[0057] In one implementation, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0058] According to a fifth aspect, there is provided a node used for wireless communication, the node including a transceiver, a memory, and a processor, wherein the memory is configured to store a program, and the processor is configured to invoke the program in the memory and control the transceiver to receive or transmit signals, in order to cause the node to perform a method according to an implementation form of the first or second aspect.

[0059] According to a sixth aspect, there is provided an apparatus including a processor configured to call a program from a memory to cause the apparatus to perform a method according to an implementation form of the first or second aspect.

[0060] According to a seventh aspect, there is provided a chip including a processor configured to call a program from a memory to cause a device to which the chip is attached to perform a method according to an implementation form of the first or second aspect.

[0061] According to an eighth aspect, a computer-readable storage medium is provided, the computer-readable storage medium storing a program that causes a computer to execute a method according to each implementation mode of the first or second aspect.

[0062] According to a ninth aspect, there is provided a computer program product including a program that causes a computer to execute a method according to each implementation mode of the first or second aspect.

[0063] According to a tenth aspect, there is provided a computer program causing a computer to execute a method according to each implementation mode of the first or second aspect.

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

[0065] The method provided in the embodiments of the present application for a node used for wireless communication helps to improve the coverage of a relay node.

[0066] The method provided in the embodiments of the present application for a node used for wireless communication helps to reduce the power consumption of a relay node.

[0067] The methods provided in the embodiments of the present application for nodes used for wireless communication help UEs maintain system synchronization, beam measurement, and mobility management.

[0068] The method for a node used for wireless communication provided in the embodiments of the present application helps improve the probability of a UE successfully accessing a communication system. [Brief explanation of the drawings]

[0069] [Figure 1] 1 is an exemplary diagram of a system architecture of a wireless communication system to which an embodiment of the present application is applicable; [Figure 2] 1 is a schematic structural diagram of an NCR. [Figure 3] FIG. 1 is an exemplary diagram of possible signal transfer modes for NCR. [Figure 4] FIG. 10 is an exemplary diagram of another possible signal transfer mode of NCR. [Figure 5] 1 is a schematic flowchart of a method for a first node used for wireless communication according to an embodiment of the present application; [Figure 6] 10 is a schematic flowchart of a method for a first node used for wireless communication according to another embodiment of the present application. [Figure 7] 10 is a schematic flowchart of a method for a first node used for wireless communication according to yet another embodiment of the present application. [Figure 8] 10 is a schematic flowchart of a method for a first node used for wireless communication according to yet another embodiment of the present application. [Figure 9] 10 is a schematic flowchart of a method for a first node used for wireless communication according to yet another embodiment of the present application. [Figure 10] FIG. 2 is an exemplary diagram of possible signal transfer modes of NCR according to an embodiment of the present application. [Figure 11] FIG. 1 is a schematic structural diagram of a node for wireless communication according to an embodiment of the present application; [Figure 12] FIG. 1 is a schematic structural diagram of a node for wireless communication according to another embodiment of the present application; [Figure 13] 1 is a schematic structural diagram of an apparatus according to an embodiment of the present application; [Figure 14] 1 is a schematic diagram of hardware modules of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0070] Communication System Architecture 1 is an example diagram 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 UE 120. The network device 110 may be a device that communicates with the UE 120. The network device 110 may provide communication coverage to a particular geographic area and may communicate with the UE 120 located within the coverage.

[0071] 1 illustrates an example in which there is one network device and one UE. Optionally, the wireless communication system 100 may include one or more network devices 110 and / or one or more UEs 120. With respect to the network device 110, the one or more UEs 120 may be located within the network coverage of the network device 110, may be located outside the network coverage of the network device 110, or may be located partially within the network coverage of the network device 110 and partially outside the network coverage of the network device 110, which is not limited in the embodiments of the present application.

[0072] Optionally, the wireless communication system 100 may further include other network entities, such as a network controller and a mobility management entity, which are not limited in the embodiments of the present application.

[0073] It should be understood that the technical solutions in the embodiments of the present application may be applied to various communication systems, such as a fifth generation (5G) system or a new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, and an LTE time division duplex (TDD) system. The technical solutions provided in the present application may also be applied to future communication systems such as a sixth generation mobile communication system and a satellite communication system.

[0074] The UE in the embodiments of the present application may also be referred to as a terminal device, access terminal, subscriber unit, subscriber station, mobile, mobile station (MS), mobile terminal (MT), remote station, remote terminal device, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. The UE in the embodiments of the present application may be a device capable of providing voice and / or data connectivity to a user and connecting people, objects, and machines, such as a handheld device or an in-vehicle device with wireless connectivity capabilities. The UE in the embodiments of the present application may be a mobile phone, a tablet computer (pad), a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device, a vehicle, a wireless terminal in industrial control, a wireless terminal in autonomous 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, a UE may act as a scheduling entity that provides sidelink signals between UEs in vehicle-to-everything (V2X), device-to-device (D2D), etc. For example, a cellular phone and a vehicle communicate with each other by using sidelink signals. A cellular phone and a smart home device communicate with each other without relaying communication signals through a base station. Optionally, the UE may be used to act as a base station.

[0075] The network device in the embodiments of the present application may be a device for communicating with a UE. The network device may also be referred to as an access network device or a wireless access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may be a radio access network (RAN) node (or device) that connects a UE to a wireless network. The base station may broadly cover various names below, or may be interchangeable with the following names, for example, Node B, evolved Node B (eNB), next-generation Node B (gNB), relay station, access point, transmit and receive point (TRP), transmission point (TP), master MeNB, secondary SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, radio node, access point (AP), transmit node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), and positioning node. The base station may be a macro base station, a micro base station, a relay node, a donor node, etc., or a combination thereof. Alternatively, the base station may be a communication module, modem, or chip disposed in the device or apparatus described above. Alternatively, the base station may be a mobile switching center, a device performing the functions of a base station in D2D, V2X, and machine-to-machine (M2M) communications, a network-side device in a 6G network, a device performing the functions of a base station in a future communication system, etc. The base station may support networks of the same or different access technologies. The specific technology used by the network device and the specific device form are not limited in the embodiments of the present application.

[0076] The base station may be fixed or mobile. For example, a helicopter or a drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In another example, a helicopter or a drone may be configured to act as a device that communicates with another base station.

[0077] In some deployments, the network device in the embodiments of the present application may be a CU or a DU, or the network device includes a CU and a DU. The gNB may further include an AAU.

[0078] The network devices and UEs may be deployed on the ground, including indoors or outdoors, handheld or vehicle-mounted, or on water, or may be deployed in airplanes, balloons, and satellites in the air. In the embodiments of the present application, the scenarios where the network devices and UEs are located are not limited.

[0079] New network node in a communication system In the trend of network densification and millimeter wave communication applications, some new network nodes are gradually proposed to improve the network coverage capability and support the rapidly growing number of users. Such new network nodes may enhance the flexibility of network deployment, and therefore, they are attracting increasing attention.

[0080] For example, the NR Release 16 (Rel-16) version introduces an integrated access and backhaul (IAB) node. The NR Release 17 (Rel-17) version further enhances the IAB node. The main feature of the IAB node is that no wired backhaul links are required between network nodes.

[0081] As another example, wireless repeaters, widely used in 2G, 3G, and 4G systems, also belong to new network nodes other than base stations. Wireless repeaters are sometimes called radio frequency repeaters (RF repeaters) or relays. Traditional wireless repeaters simply amplify and forward received signals. While such wireless repeaters have simple functions and high cost-effectiveness, they cannot be flexibly adjusted according to the actual conditions of the communication system, and therefore have poor performance. Compared with traditional wireless repeaters, some communication systems introduce NCR. NCR enhances the ability to receive and process secondary control information (SCI) from network devices. Based on SCI, NCR can efficiently perform signal amplification and forwarding functions and reduce unnecessary noise amplification, thereby providing better spatial directionality for NCR reception and transmission. The NR Release 18 (Rel-18) version will implement the NCR study item (SI). In September 2022, 3GPP passed RP-222673, initiating the "NR NCR" work item (WI) in NR Rel-18, thereby formalizing the standardization of NCR in NR systems.

[0082] According to the NCR study report (3GPP TR38.867), as shown in FIG. 2, the NCR 130 mainly includes two functional modules: an NCR-mobile termination (NCR-MT) 131 and an NCR-forwarding (NCR-Fwd) 132. The NCR-MT 131 may be responsible for interacting with the base station 110 via a control link (C-link). The NCR-Fwd 132 is mainly responsible for amplifying and forwarding uplink (UL) / downlink (DL) radio frequency signals between the base station 110 and the UE 120 via a backhaul link (B-link) and an access link (A-link). The behavior of the NCR-Fwd 132 is controlled by the SCI from the base station 110. The SCI may include one or more of the following information: beam information, timing information, uplink-downlink time division duplex configuration (UL-DL TDD configuration) information, NCR-Fwd on / off information, and NCR-Fwd power control information.

[0083] In a communication system, a base station may periodically broadcast a synchronization signal block, and a UE may accordingly receive the synchronization signal block broadcast by the base station, so as to access the communication system based on the received synchronization signal block. It should be noted that the synchronization signal block described in the embodiments of the present application may be, for example, a synchronization signal / physical broadcast channel block (SS / PBCH block, SSB). Sometimes, an SSB is also referred to as a synchronization broadcast signal.

[0084] In some scenarios, the UE does not directly receive the synchronization signal block sent by the base station, but receives the synchronization signal block forwarded by a relay node. For example, if an NCR (see FIG. 2) is deployed in the communication system, the NCR may receive the synchronization signal block sent by the base station and forward the synchronization signal block to the UE within the coverage of the NCR.

[0085] In order to expand the coverage of the synchronization signal block, the base station may transmit multiple synchronization signal blocks in a beam-sweeping manner. However, since a relay node may be located within the coverage of several beams of the base station, the relay node generally only forwards the synchronization signal blocks corresponding to these beams, thereby potentially reducing the probability of the UE successfully accessing the communication system.

[0086] The NCR deployment scenario is still used as an example. Referring to Figures 3 and 4, because the capabilities of the base station 110 and the NCR 130 are different, the downlink transmission beam (DL Tx beam) of the base station 110 and the downlink transmission beam of the NCR-Fwd (the internal structure of the NCR is not shown in Figures 3 or 4, and Figure 2 may be referred to for a related description of the NCR-Fwd) may be completely different physical beams. When the UE 120 accesses the network through the NCR 130, the UE 120 first needs to receive a synchronization signal block from the base station 110 through the NCR 130. To increase the coverage capability of the synchronization signal block, the base station 110 may transmit multiple synchronization signal blocks on the B link in a beam-sweeping manner. Assuming that the NCR-Fwd in the NCR 130 is within the coverage of one beam of the B link, the NCR-Fwd can only receive one synchronization signal block (SSBi shown in Figure 3). After receiving the synchronization signal block, NCR-Fwd may forward the synchronization signal block in two ways as follows:

[0087] Scheme 1: As shown in Figure 3, NCR-Fwd may transmit a synchronization signal block (i.e., Fssbi in Figure 3) from the base station 110 on the A link by using a wide beam. In this way, the coverage of the synchronization signal block can be expanded, but the signal quality of Fssbi received by the UE 120 is low due to the use of wideband waves.

[0088] Scheme 2: As shown in Figure 4, NCR-Fwd may transmit a synchronization signal block (i.e., Fssbi in Figure 4) from base station 110 on the A link by using a narrow beam corresponding to Fssbi. The beamforming gain of the narrow beam is large, and as a result, the signal reception quality may be improved. However, because the coverage of the narrow beam is small, UE 120 may not be within the coverage of the narrow beam, and as a result, UE 120 cannot receive Fssbi transmitted by NCR-Fwd.

[0089] In view of the above problems, after receiving one or more synchronization signal blocks, a node having a relay function provided in an embodiment of the present application does not simply forward one or more synchronization signal blocks, but transmits one or more synchronization signal blocks (hereinafter referred to as second type synchronization signal blocks) that are different from one or more synchronization signal blocks (hereinafter referred to as first type synchronization signal blocks), so that one or more of the following objectives can be achieved: improving signal reception quality, reducing signaling overhead, and improving resource utilization efficiency and the probability of UEs successfully accessing the communication system.

[0090] The methods and devices provided in this application are illustrated by using multiple embodiments or examples, and different features in these embodiments or examples may be combined with each other without contradicting each other to obtain new embodiments or examples, and these new embodiments or examples also fall within the protection scope of this application.

[0091] 5 is a method 500 for a first node used for wireless communication according to one embodiment of the present application. The first node may be any type of node having a relay or synchronization signal block transfer function in the communication system.

[0092] In one embodiment, the first node may be an NCR.

[0093] In one embodiment, the first node device may be a wireless repeater.

[0094] In one embodiment, the first node may be a relay.

[0095] In one embodiment, the first node may be a UE, ie, the UE may be used as a relay node for forwarding the synchronization signal block.

[0096] Referring to FIG. 5, in steps S510 and S520, one or more first-type synchronization signal blocks are received, and one or more second-type synchronization signal blocks are sent.

[0097] In one embodiment, the one or more first type synchronization signal blocks may include only one first type synchronization signal block.

[0098] In one embodiment, the one or more first type synchronization signal blocks may include a plurality of first type synchronization signal blocks.

[0099] In one embodiment, each synchronization signal block in the one or more first type synchronization signal blocks is an SSB.

[0100] In one embodiment, one or more synchronization signal blocks of a first type are used to determine or reconstruct one or more synchronization signal blocks of a second type.

[0101] In one embodiment, one or more first type synchronization signal blocks are used to determine an index of each second type synchronization signal block among one or more second type synchronization signal blocks.

[0102] In one embodiment, one or more first type synchronization signal blocks are used to determine an index of each second type synchronization signal block among one or more second type synchronization signal blocks from a plurality of candidate synchronization signal block indexes.

[0103] In one embodiment, one or more first type synchronization signal blocks are used to determine the DMRS of the PBCH included in each second type synchronization signal block among one or more second type synchronization signal blocks.

[0104] In one embodiment, one or more first type synchronization signal blocks are used to determine first type information in the PBCH (such as the payload of the PBCH) included in each second type synchronization signal block among one or more second type synchronization signal blocks.

[0105] In one embodiment, one or more first type synchronization signal blocks are used to access a base station.

[0106] In one embodiment, the one or more second type synchronization signal blocks include only one second type synchronization signal block.

[0107] In one embodiment, the one or more second type synchronization signal blocks include a plurality of second type synchronization signal blocks.

[0108] In one embodiment, each synchronization signal block in the one or more second type synchronization signal blocks is an SSB.

[0109] In one embodiment, one or more second type synchronization signal blocks are used to access a base station.

[0110] In one embodiment, when the first node transmits a plurality of second-type synchronization signal blocks, the plurality of second-type synchronization signal blocks correspond to a plurality of beams, respectively.

[0111] In one embodiment, when the first node transmits a plurality of second-type synchronization signal blocks, the plurality of second-type synchronization signal blocks correspond to a plurality of spatial filters, respectively.

[0112] In one embodiment, when the first node transmits a plurality of second-type synchronization signal blocks, the plurality of second-type synchronization signal blocks correspond to a plurality of antenna ports, respectively.

[0113] In one embodiment, when the first node transmits a plurality of second-type synchronization signal blocks, the plurality of second-type synchronization signal blocks may be transmitted in a beam-sweeping manner.

[0114] In one embodiment, one or more second type synchronization signal blocks may belong to a subset of one or more first type synchronization signal blocks.

[0115] In one embodiment, one or more second type synchronization signal blocks may belong to a true subset of one or more first type synchronization signal blocks.

[0116] In one embodiment, the one or more second type synchronization signal blocks may be determined based on configuration information (such as time domain resource configuration information) of the synchronization signal blocks pre-stored by the first node.

[0117] Each first type synchronization signal block in the one or more first type synchronization signal blocks may include first information.

[0118] In one embodiment, the first information is used to generate one or more synchronization signal blocks of a second type.

[0119] In one embodiment, the first information includes system information. For example, the first information may refer to MIB information. In other words, one or more first-type synchronization signal blocks may include the same MIB information.

[0120] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

[0121] The definition of the first period is not particularly limited in the embodiments of the present application.

[0122] In one embodiment, the first period may include a positive integer number of half frames.

[0123] In one embodiment, the first period may be a half frame.

[0124] In one embodiment, the first period may be equal to 0.5 ms.

[0125] In one embodiment, the first period may include a positive integer number of frames.

[0126] Each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0127] In one embodiment, the first link may be a backhaul link.

[0128] In one embodiment, the second link is an access link.

[0129] In one embodiment, the first link is a link between NCR-Fwd and a base station.

[0130] In one embodiment, the second link is a link between the NCR-Fwd and the UE.

[0131] In one embodiment, the NCR-Fwd communicates with the base station over a first link.

[0132] In one embodiment, the NCR-Fwd communicates with the UE over a second link.

[0133] In one embodiment, the first link is a DL and the second link is a DL.

[0134] In one embodiment, the first link is a DL and the second link is a side link (SL).

[0135] Each first-type synchronization signal block among the one or more first-type synchronization signal blocks may include first information (such as MIB information). Correspondingly, each second-type synchronization signal block among the one or more second-type synchronization signal blocks may also include first information. In other words, one or more first-type synchronization signal blocks and one or more second-type synchronization signal blocks may include the same system information (such as MIB information).

[0136] An index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes, which may be indexes of a plurality of candidate synchronization signal blocks within one period (hereinafter referred to as a first period).

[0137] In one embodiment, the first period may include a positive integer number of half frames.

[0138] In one embodiment, the first period may be a half frame.

[0139] In one embodiment, the first period may be equal to 0.5 ms.

[0140] In one embodiment, the first period may include a positive integer number of frames.

[0141] 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. There may be multiple definitions for at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks being different from any first-type synchronization signal block among the one or more first-type synchronization signal blocks, and some possible definition schemes are provided below.

[0142] definition 1 An index of at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from an index of any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0143] definition 2 Each of the multiple candidate synchronization signal blocks includes multiple PBCHs. Each of the multiple PBCHs carries multiple DMRSs, and the sequence index of each DMRS among the multiple DMRSs corresponds to at least one of the multiple candidate synchronization signal block indexes (e.g., the multiple sequence indexes of the multiple DMRSs are in one-to-one correspondence with the multiple candidate synchronization signal block indexes). Each 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. The sequence index of the DMRS in the PBCH included in at least one second-type synchronization signal block among 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.

[0144] For example, when the number of candidate synchronization signal block indexes is equal to or less than eight, the sequence indexes of the DMRSs have a one-to-one correspondence with the candidate synchronization signal block indexes.

[0145] definition 3 Each of the candidate synchronization signal blocks includes a plurality of PBCHs, each of which carries a plurality of DMRSs, and each of which includes a plurality of first type information, which may include, for example, the payload of the PBCH.

[0146] The first type information and the DMRS sequence index included in each PBCH among the plurality of PBCHs together correspond to one of the plurality of candidate synchronization signal block indexes. For example, the most significant bit (MSB) of the synchronization signal block index may be determined based on the plurality of first type information included in the plurality of PBCHs, and the least significant bit (LSB) of the synchronization signal block index may be determined based on the DMRS sequence of the plurality of PBCHs. The MSB and the LSB combined correspond to an index among the plurality of candidate synchronization signal blocks.

[0147] Furthermore, the first type information in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information in the PBCH included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0148] Alternatively, the sequence index of the DMRS in the PBCH included in at least one second-type synchronization signal block among 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.

[0149] In one embodiment, when the number of the plurality of candidate synchronization signal block indexes is greater than 8, both the first type information in the plurality of BCHs and the sequence index of the DMRS are in one-to-one correspondence with the plurality of candidate synchronization signal block indexes, respectively.

[0150] definition 4 The time domain resources occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks are different from the time domain resources occupied by each first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0151] In one embodiment, the time domain resource occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks comprises a slot.

[0152] In one embodiment, the time domain resource occupied by at least one second type synchronization signal block among the one or more second type synchronization signal blocks includes one or more multicarrier symbols in a slot.

[0153] In one embodiment, the plurality of candidate synchronization signal blocks correspond to a plurality of time-frequency resources, respectively.

[0154] In one embodiment, the plurality of time-frequency resources has a one-to-one correspondence with the plurality of candidate synchronization signal block indices.

[0155] In one embodiment, the time-frequency domain resources occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks are different from the time-frequency domain resources occupied by any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

[0156] 6, a method 600 for a first node used for wireless communication according to an embodiment of the present application may further include a step S610 of receiving first configuration information, wherein the first configuration information includes parameters of a plurality of candidate synchronization signal blocks.

[0157] In one embodiment, the first configuration information may include parameters indicating transmission periods and / or resource configurations of the plurality of candidate synchronization signal blocks.

[0158] In one embodiment, the first configuration information may indicate one or more of the following information of a plurality of candidate synchronization signal blocks: resource configuration information, a DMRS carried, a slot index, and a half-frame index.

[0159] In one embodiment, the first configuration information includes a radio resource control information element (RRC IE).

[0160] In one embodiment, the first configuration information includes an SCI.

[0161] In one embodiment, the first configuration information includes ServingCellConfigCommon.

[0162] In one embodiment, the first configuration information is obtained by the first node upon initial access to the communication system.

[0163] In one embodiment, the first configuration information is transmitted over a third link.

[0164] In one embodiment, the third link is a control link.

[0165] In one embodiment, the third link is a link between the NCR-MT and the base station.

[0166] In one embodiment, the NCR-MT communicates with the base station over a third link.

[0167] Referring to FIG. 7, a method 700 for a first node used for wireless communication according to an embodiment of the present application may further include a step S710 of receiving second configuration information.

[0168] The second configuration information may be used to determine whether 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.

[0169] In one embodiment, the second configuration information includes an enable / disable indication. If the second configuration information includes an enable indication, the first node transmits one or more second-type synchronization signal blocks, 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. If the second configuration information includes a disable indication, the first node does not transmit the one or more second-type synchronization signal blocks, but directly forwards the one or more first-type synchronization signal blocks.

[0170] In one embodiment, the second configuration information may be used to determine the quantity of one or more second type synchronization signal blocks.

[0171] In one embodiment, the quantity of the one or more second type synchronization signal blocks may be determined based on channel conditions or physical environments between the first node and the second node, and the quantity of the one or more second type synchronization signal blocks may be configured by using second configuration information.

[0172] In one embodiment, the second configuration information is used to determine one or more second type synchronization signal blocks.

[0173] In one embodiment, the second configuration information is used to determine time domain resources occupied by the second type of synchronization signal block.

[0174] In one embodiment, the second configuration information is used to determine the DMRS of the PBCH included in the second type synchronization signal block.

[0175] In one embodiment, the second configuration information is used to determine the first type of information of the PBCH (eg, the payload of the PBCH) that is included in the second type synchronization signal block.

[0176] In one embodiment, the second configuration information is configured by the SCI.

[0177] In one embodiment, the second configuration information is configured by the OAM.

[0178] The second configuration information is introduced so that the transmission mode of the synchronization signal can be flexibly adjusted according to the actual conditions.

[0179] Referring to FIG. 8, a method 800 for a first node used for wireless communication according to an embodiment of the present application may further include a step S810 of receiving first signaling.

[0180] In one embodiment, the first signaling is transmitted on a third link.

[0181] In one embodiment, the first signaling includes an SCI.

[0182] In one embodiment, the first signaling includes RRC information.

[0183] In one embodiment, the first signaling includes an RRC IE.

[0184] In one embodiment, the first signaling includes a DCI.

[0185] In one embodiment, the first signaling includes one or more beam indices of a first type.

[0186] In one embodiment, the first signaling includes one or more frequency domain resource indices of a first type.

[0187] In one embodiment, the first signaling is used to determine one or more synchronization signal blocks of a first type.

[0188] In one embodiment, the first signaling is used to determine a quantity of synchronization signal blocks of a first type.

[0189] In one embodiment, the first signaling is used to determine time domain resources occupied by a first type of synchronization signal block.

[0190] In one embodiment, the first signaling is used to determine the DMRS of the PBCH included in the first type synchronization signal block.

[0191] In one embodiment, the first signaling is used to determine a first type of information of the PBCH (eg, a payload of the PBCH) that is included in a first type synchronization signal block.

[0192] In one embodiment, the first signaling is used to determine one or more first type beams from a first set of beams, the first set of beams including at least two first type beams.

[0193] In one embodiment, the first signaling includes one or more first type beam indices, where the one or more first type beam indices correspond to one or more first type beams, respectively.

[0194] In one embodiment, one or more first type beams are used to receive one or more first type synchronization signal blocks, respectively.

[0195] In one embodiment, the first signaling includes one or more first-type beam indexes, each corresponding to one or more first-type beams, each used to receive one or more first-type synchronization signal blocks.

[0196] In one embodiment, the first signaling includes one or more first-type beam indexes, each corresponding to one or more first-type beams, each of which is used to transmit a signal on the first link.

[0197] In one embodiment, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively.

[0198] In one embodiment, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0199] In one embodiment, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit the signal on the first link.

[0200] In one embodiment, the first signaling is used to determine one or more first type beams from a first set of beams, the first set of beams including at least two first type beams.

[0201] In one embodiment, one or more first type beams are used to receive one or more first type synchronization signal blocks, respectively.

[0202] It should be noted that the beams described in the embodiments 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 transmit filter, spatial domain receive filter, and antenna port.

[0203] A method for a first node used for wireless communication according to an embodiment of the present application is described above from the perspective of the first node with reference to Figures 5 to 8. A method for a second node used for wireless communication according to an embodiment of the present application is described below from the perspective of the second node with reference to Figure 9. The second node may be a node that originates or broadcasts a synchronization signal block in a communication system. In one 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, for parts not described in detail, reference may be made to the above descriptions.

[0204] 9 is a schematic flow diagram of a method for a second node used for wireless communication according to an embodiment of the present application. The method 900 of FIG. 9 includes step S910.

[0205] In step S910, one or more first-type synchronization signal blocks are sent, where each first-type synchronization signal block among the one or more first-type synchronization signal blocks includes first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes.

[0206] The one or more first-type synchronization signal blocks are used to trigger the first node to transmit one or more second-type synchronization signal blocks, and each second-type synchronization signal block among the one or more second-type synchronization signal blocks includes first information, an index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of 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.

[0207] In one 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.

[0208] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

[0209] In one embodiment, each of the plurality of candidate synchronization signal blocks includes a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, and a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes. Each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH included in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a 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.

[0210] In one embodiment, each of the plurality of candidate synchronization signal blocks includes a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs including a plurality of first type information, and both the first type information and the sequence index of the DMRS included in each of the plurality of PBCHs together correspond to one of the plurality of candidate synchronization signal block indexes, and the first type information in the PBCH or the sequence index of the DMRS included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information in the PBCH or the sequence index of the DMRS included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0211] In one 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 are different from the time domain resources occupied by any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0212] In one embodiment, the method shown in FIG. 9 may further include transmitting first configuration information, where the first configuration information includes parameters of a plurality of candidate synchronization signal blocks.

[0213] In one embodiment, the method shown in FIG. 9 further includes a step of transmitting second configuration information, wherein the second configuration information is used to determine whether 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, or the second configuration information is used to determine the quantity of the one or more second-type synchronization signal blocks.

[0214] In one embodiment, the second configuration information is configured by the SCI or the second configuration information is configured by the OAM.

[0215] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0216] In one embodiment, the method shown in FIG. 9 further includes a step of transmitting first signaling, where the first signaling is transmitted on a third link, and the first signaling is used to determine one or more first type synchronization signal blocks.

[0217] In one embodiment, the first signaling includes one or more first-type beam indexes, each corresponding to one or more first-type beams, each of which is used to transmit a signal on the first link.

[0218] In one embodiment, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0219] The embodiments of the present application will be described in more detail below in combination with specific examples. In the example shown in FIG. 10, NCR corresponds to the first node described above, gNB corresponds to the second node described above, and SSB corresponds to the synchronization signal block described above. It should be noted that the example shown in FIG. 10 is intended only to help those skilled in the art understand the embodiments of the present application, and is not intended to use specific values ​​or specific scenarios in this example to limit the embodiments of the present application. Obviously, those skilled in the art may make various equivalent modifications or variations based on the example shown in FIG. 10, and such modifications or variations also fall within the scope of the embodiments of the present application.

[0220] Referring to FIG. 10 , considering that the MIB information carried in the multiple SSBs sent by the gNB is the same except for the time-domain resource indication, the multiple SSBs are similar and are sent repeatedly. Because the NCR-MT receives and decodes the SSBs sent by the gNB during initial access, the transmission duration and resource configuration of the SSBs can also be known from the received system information. The configuration information acquired by the NCR-MT during initial access may be pre-stored in the NCR. When the NCR-Fwd detects the SSBs on the B link, multiple Fssbs may be reconfigured on the A link through the pre-stored configuration information. The reconfigured Fssbs correspond to the content carried in the time-frequency resources occupied by the multiple SSBs configured by the gNB. The NCR-Fwd may then transmit the reconfigured Fssbs in a beam-sweeping manner, so that the UE can detect a better-quality Fssbj from the multiple Fssbs to perform synchronization and initial access. It should be understood that the Fssbj may be different from the SSBi or the same as the SSBi.

[0221] Furthermore, to ensure that NCR is transparent to the UE, the Fssb reconfigured and forwarded by the NCR-Fwd may be a subset (e.g., a true subset) of multiple SSBs configured by the gNB. The number of Fssb reconfigured and forwarded by the NCR-Fwd is less than or equal to the number of SSBs configured by the gNB, and the number of Fssb reconfigured and forwarded by the NCR-Fwd may be configured by the SCI or OAM according to the channel conditions or physical environment.

[0222] In addition, although NCR-Fwd has the ability to reconfigure multiple Fssbs through one SSB, ultimately, NCR is required to pre-store the signals (such as DMRS, slot index, and half-frame index) and resource configuration information carried by multiple SSBs, and as a result, the SSB reconfiguration function of NCR-Fwd may be enabled or disabled through SCI signaling or OAM configuration.

[0223] Method embodiments of the present application have been described in detail above with reference to Figures 1 to 10. Apparatus embodiments of the present application will be described in detail below with reference to Figures 11 to 14. It should be understood that the description of the method embodiments corresponds to the description of the apparatus embodiments, and therefore, for parts not described in detail, reference may be made to the above method embodiments.

[0224] 11 is a schematic structural diagram of a node for wireless communication according to an embodiment of the present application. The node 1100 may be the first node described above. The first node may include a first receiving module 1110 and a first transmitting set 1120.

[0225] The first receiving module 1110 may be configured to receive one or more first-type synchronization signal blocks, where each first-type synchronization signal block among the one or more first-type synchronization signal blocks includes first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes.

[0226] The first transmitting module 1120 may be configured to transmit one or more second-type synchronization signal blocks, where each second-type synchronization signal block among the one or more second-type synchronization signal blocks includes first information, an index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of 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.

[0227] In one 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] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

[0229] In one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), and a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes. Each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH included in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a 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] In one embodiment, each of the plurality of candidate synchronization signal blocks includes a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs including a plurality of first type information, both the first type information and the sequence index of the DMRS included in each PBCH among the plurality of PBCHs together correspond to one of the plurality of candidate synchronization signal block indexes, and the first type information or the sequence index of the DMRS in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information or the sequence index of the PBCH included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0231] In one 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 are different from the time domain resources occupied by any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0232] In one embodiment, the first node further includes a second receiving module configured to receive first configuration information, the first configuration information including parameters of a plurality of candidate synchronization signal blocks.

[0233] In one embodiment, the first node further includes a third receiving module configured to receive second configuration information, wherein the second configuration information is used to determine whether at least one 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, or the second configuration information is used to determine a quantity of the one or more second-type synchronization signal blocks.

[0234] In one embodiment, the second configuration information is configured by secondary control information SCI, or the second configuration information is configured by operation, administration and maintenance OAM.

[0235] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0236] In one embodiment, the first node further includes a fourth receiving module configured to receive first signaling, the first signaling being transmitted on the third link, the first signaling being used to determine one or more first type synchronization signal blocks.

[0237] In one embodiment, the first signaling includes one or more first-type beam indices, each corresponding to one or more first-type beams, each used to transmit a signal on the first link.

[0238] In one embodiment, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0239] 12 is a schematic structural diagram of a node for wireless communication according to another embodiment of the present application. The node 1200 may be the second node described above. The second node may include a first sending module 1210.

[0240] The first transmitting module 1210 may be configured to transmit one or more first-type synchronization signal blocks, where each first-type synchronization signal block among the one or more first-type synchronization signal blocks includes first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes.

[0241] The one or more first-type synchronization signal blocks are used to trigger the first node to transmit one or more second-type synchronization signal blocks, and each second-type synchronization signal block among the one or more second-type synchronization signal blocks includes first information, an index of each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of a plurality of 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.

[0242] In one 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.

[0243] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in the first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

[0244] In one embodiment, the plurality of candidate synchronization signal blocks each include a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), and a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes. Each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH included in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a 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.

[0245] In one embodiment, each of the plurality of candidate synchronization signal blocks includes a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs including a plurality of first type information, both the first type information and the sequence index of the DMRS included in each PBCH among the plurality of PBCHs together correspond to one of the plurality of candidate synchronization signal block indexes, and the first type information or the sequence index of the DMRS in the PBCH included in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from the first type information or the sequence index of the PBCH included in any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0246] In one 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 are different from the time domain resources occupied by any first type synchronization signal block among the one or more first type synchronization signal blocks.

[0247] In one embodiment, the second node may further include a second transmitting module configured to transmit first configuration information, the first configuration information including parameters of the plurality of candidate synchronization signal blocks.

[0248] In one embodiment, the second node may further include a third transmitting module configured to transmit second configuration information, where the second configuration information is used to determine whether 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, or the second configuration information is used to determine a quantity of the one or more second-type synchronization signal blocks.

[0249] In one embodiment, the second configuration information is configured by secondary control information SCI, or the second configuration information is configured by operation, administration and maintenance OAM.

[0250] In one embodiment, each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

[0251] In one embodiment, the second node further includes a fourth transmitting module configured to transmit first signaling, the first signaling being transmitted on the third link, the first signaling being used to determine one or more first type synchronization signal blocks.

[0252] In one embodiment, the first signaling includes one or more first-type beam indices, each corresponding to one or more first-type beams, each used to transmit a signal on the first link.

[0253] In one embodiment, the first signaling includes one or more first-type frequency domain resource indices, where the one or more first-type frequency domain resource indices correspond to one or more first-type frequency domain resources, respectively, and the one or more first-type frequency domain resources are used to transmit one or more first-type synchronization signal blocks, respectively.

[0254] Figure 13 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The dashed lines in Figure 13 indicate that the unit or module is optional. The apparatus 1300 may be configured to implement the methods described in the above method embodiments. The apparatus 1300 may be a chip or a UE.

[0255] The device 1300 may include one or more processors 1310. The processor 1310 may enable the device 1300 to perform the methods described in the method embodiments 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 be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

[0256] The apparatus 1300 may further include one or more memories 1320. The memory 1320 stores programs that can be executed by the processor 1310 to cause the processor 1310 to perform the methods described in the above method embodiments. The memory 1320 may be separate from the processor 1310 or may be integrated within the processor 1310.

[0257] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with another device or chip through the transceiver 1330. For example, the processor 1310 may send and receive data to and from another device or chip through the transceiver 1330.

[0258] 14 is a schematic diagram of a hardware module of a communication device according to an embodiment of the present application. In particular, FIG. 14 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0259] 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 .

[0260] 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.

[0261] For transmissions from the second communication device 410 to the first communication device 450, upper layer data packets from the core network or from a data source 477 are provided to the controller / processor 475 in the second communication device 410. The core network and data source 477 represent all protocol layers above the L2 layer. The controller / processor 475 implements L2 layer functions. For transmissions from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and allocation of radio resources for the first communication device 450 based on various priority measures. The controller / processor 475 is further responsible for 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 of the L1 layer (i.e., the physical layer). The transmit processor 416 performs encoding and interleaving to facilitate forward error correction and mapping of signal clusters based on various modulation schemes (such as binary phase shift keying, quadrature phase shift keying, M-phase shift keying, and M-quadrature amplitude modulation) at the second communication device 410. The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based 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 the mapped spatial stream with reference signals (e.g., pilots) in the time and / or frequency domains, and then uses an inverse fast Fourier transform to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs analog precoding transmit / beamforming operations on the time-domain multicarrier 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 and then provides the radio frequency stream to a different antenna 420 .

[0262] In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 in the first communication device 450 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto a radio frequency carrier, converts the radio frequency stream to a baseband multi-carrier symbol stream, and provides the baseband multi-carrier symbol stream to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 perform various signal processing functions of the L1 layer. The multi-antenna receive processor 458 performs an analog precoding receive / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream obtained after the analog precoding receive / beamforming operation from the time domain to the frequency domain via a fast Fourier transform. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456. The reference signal is used for channel estimation, and the data signal is recovered after multi-antenna detection performed by the multi-antenna receive processor 458 to obtain any spatial streams that use the first communication device 450 as their destination. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 performs 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.For transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 performs demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the second communication device 410. The upper layer packets are then provided to all protocol layers above the L2 layer, or various control signals may be provided to the L3 layer for processing by the L3 layer.

[0263] In a transmission from the first communication device 450 to the second communication device 410, upper layer data packets are provided to the controller / processor 459 by using a data source 467 in the first communication device 450. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions in 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 performs header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels to perform L2 layer functions for the user plane and control plane. The controller / processor 459 is further responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation and mapping and channel coding processing. The multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. The transmit processor 468 then modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, which undergo analog precoding / beamforming operations in the multi-antenna transmit processor 457 before being provided to different antennas 452 via transmitters 454. 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 the radio frequency symbol stream to the antenna 452.

[0264] For transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the receiving functions at the first communication device 450 described for transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 jointly perform functions of the L1 layer. The controller / processor 475 performs functions of the L2 layer. The controller / processor 475 may be associated with a memory 476 that stores program codes and data. The memory 476 may be referred to as a computer-readable medium. For transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 performs demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover 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, or various control signals may be provided to the core network or to the L3 layer for processing by the L3 layer.

[0265] In one embodiment, the first communication device 450 includes at least one processor and at least one memory. The at least one memory includes computer program code. The at least one memory and the computer program code are configured for use with the at least one processor. The first communication device 450 is configured to at least receive a first synchronization signal block, where an index of the first synchronization signal block is one of a plurality of candidate synchronization signal block indexes, and transmit a first preamble group, where the first preamble group includes a plurality of preambles. The first random access channel occasion group includes a plurality of random access channel occasions, where the plurality of random access channel occasions in the first random access channel occasion group are used separately to transmit the plurality of preambles in the first preamble group, and any two random access channel occasions in the first random access channel occasion group are orthogonal in the time domain. The plurality of candidate synchronization signal block indexes are mapped to the plurality of random access channel occasion groups according to a first mapping order, the first random access channel occasion group being one of the plurality of random access channel occasion groups, the first random access channel occasion group corresponding to a first occasion group type, the first occasion group type being one of the plurality of candidate occasion group types, and the first synchronization signal block index, the first occasion group type, and the first mapping order are used to determine the first random access channel occasion group.

[0266] In one embodiment, the first communication device 450 includes a memory for storing a computer-readable program of instructions, which, when executed by at least one processor, generates actions including receiving a first synchronization signal block, where the index of the first synchronization signal block is one of a plurality of candidate synchronization signal block indexes, and sending a first preamble group, where the first preamble group includes a plurality of preambles. The first random access channel occasion group includes a plurality of random access channel occasions, and the plurality of random access channel occasions in the first random access channel occasion group are separately used to transmit the plurality of preambles in the first preamble group. Any two random access channel occasions in the first random access channel occasion group are also orthogonal in the time domain. The plurality of candidate synchronization signal block indexes are mapped to a plurality of random access channel occasion groups according to a first mapping order, and the first random access channel occasion group is one of the plurality of random access channel occasion groups. The first random access channel occasion group corresponds to a first occasion group type, and the first occasion group type is one of a plurality of candidate occasion group types. The index of the first synchronization signal block, the first occasion group type, and the first mapping order are used to determine the first random access channel occasion group.

[0267] In one embodiment, the first communication device 450 corresponds to the first node in this application.

[0268] In one embodiment, the second communication device 410 corresponds to a second node in this application.

[0269] In one embodiment, the first communication device 450 is a UE.

[0270] In one embodiment, the first communication device 450 is a UE that supports V2X.

[0271] In one embodiment, the first communication device 450 is a UE that supports D2D.

[0272] In one embodiment, the first communication device 450 is a network-controlled repeater.

[0273] In one embodiment, the first communication device 450 is a relay.

[0274] In one embodiment, the second communication device 410 is a base station.

[0275] In one embodiment, antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, and controller / processor 459 are configured to receive a first synchronization signal block in the present application.

[0276] In one embodiment, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller / processor 475 are configured to transmit 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.

[0277] In one embodiment, antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, and controller / processor 459 are configured to transmit a first preamble group in the present application.

[0278] In one embodiment, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller / processor 475 are configured to receive a first preamble group in the present application.

[0279] An embodiment of the present application further provides a computer-readable storage medium for storing a program. The computer-readable storage medium may be applied to the node provided in the embodiment of the present application, and the program causes a computer to execute the method to be performed by the node in various embodiments of the present application.

[0280] An embodiment of the present application further provides a computer program product, which includes a program that may be applied to the node provided in the embodiments of the present application, and causes a computer to execute the method to be performed by the node in various embodiments of the present application.

[0281] An embodiment of the present application further provides a computer program, which may be applied to the node provided in the embodiment of the present application, causing a computer to execute the method to be performed by the node in various embodiments of the present application.

[0282] It should be understood that the terms "system" and "network" in this application may be used interchangeably. In addition, the terms used in this application are used only to describe particular embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," "fourth," etc. in the specification, claims, and drawings of this application are used to distinguish different objects rather than to indicate a particular order. In addition, the terms "comprise" and "have," and any variations thereof, are intended to cover a non-exclusive inclusion.

[0283] In the embodiments of the present application, "indicate" mentioned herein may refer to direct indication, or may refer to indirect indication, or may mean that there is an association relationship. For example, "A indicates B" may mean that A directly indicates B, for example, B can be obtained by A, or that A indirectly indicates B, for example, A indicates C and B can be obtained by C, or may mean that there is an association relationship between A and B.

[0284] In the embodiments of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based only on A, and instead B may be determined based on A and / or other information.

[0285] In embodiments of the present application, the term "correspond" may mean that there is a direct or indirect correspondence between two things, or that there is an association relationship between two things, or that there is a relationship such as showing and being shown, or comprising and being comprised.

[0286] In the embodiments of the present application, "predefined" or "pre-configured" may be implemented by pre-storing a corresponding code, table, or other format that can be used to indicate relevant information in a device (including, for example, a UE and a network device), and the specific implementation form thereof is not limited in the present application. For example, predefined may refer to being defined in a protocol.

[0287] In the embodiments of the present application, the term "protocol" may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.

[0288] In the embodiments of the present application, the term "and / or" is merely an associative relationship describing related objects, and represents three possible relationships. For example, A and / or B may represent three cases: only A exists, both A and B exist, and only B exists. In addition, the symbol " / " in this specification generally indicates an "or" relationship between related objects.

[0289] In the embodiments of the present application, the sequence numbers of the above processes do not mean the execution order, and the execution order of the processes should be determined according to the functions and internal logic of the processes, and should not be construed as any limitation on the implementation process of the embodiments of the present application.

[0290] In some embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the unit division is merely a logical functional division, and other divisions may be used in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. In addition, the shown or described mutual couplings or direct couplings or communication connections may be implemented by using some interfaces. Indirect couplings or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

[0291] 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, i.e., they may be located in one place or distributed over multiple network units. Some or all of the units may be selected according to the actual needs to achieve the objectives of the solution of this embodiment.

[0292] In addition, the functional units in the embodiments of the present application may be integrated into one processing unit, or each of the units may exist physically alone, or two or more units may be integrated into one unit.

[0293] All or part of the above embodiments may be implemented by using software, hardware, firmware, or any combination thereof. When software is used to implement the embodiments, the above embodiments may be implemented entirely or partially in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated entirely or partially. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or another programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via a wired method (such as coaxial cable, optical fiber, and digital subscriber line (DSL)) or a wireless method (such as infrared, wireless, and microwave). The computer-readable storage medium may be any available medium readable by a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, or magnetic tapes), optical media (e.g., digital versatile disks (DVDs)), semiconductor media (e.g., solid state drives (SSDs)), and the like.

[0294] The above description is merely a specific implementation of the present application, and the scope of protection of the present application is not limited thereto. Any modifications or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application shall fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims. [Explanation of symbols]

[0295] 100 Wireless Communication System 110 Network Devices 120 User Equipment (UE) 130 Network Controlled Repeater (NCR) 131 NCR Mobile Termination (NCR-MT) 132 NCR Forwarding (NCR-Fwd) 410 Second Communication Device 416 Transmit Processor 418 Transmitter / Receiver 420 Antenna 450 first communication device 452 Antenna 454 Transmitter / Receiver 456 Receive Processor 457 Multi-Antenna Transmit Processor 458 Multi-Antenna Receive Processor 459 Controller / Processor 460 memory 467 Data Sources 468 Transmit Processor 470 Receive Processor 471 Multi-Antenna Transmit Processor 472 Multi-Antenna Receive Processor 475 Controller / Processor 476 memory 477 Data Sources 1100 nodes 1110 first receiving module 1120 First transmitting set, first transmitting module 1200 nodes 1210 First sending module, first transmitting module 1300 equipment 1310 processor 1320 memory 1330 transceiver

Claims

1. 1. A method for a first node used for wireless communication, comprising: receiving one or more first-type synchronization signal blocks, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks comprises first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; transmitting one or more second-type synchronization signal blocks, wherein each second-type synchronization signal block among the one or more second-type synchronization signal blocks comprises the first information, an index of each second-type synchronization signal block among 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 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. 2. The method of claim 1, wherein an index of at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from an index of any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

3. 3. The method of claim 1, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the plurality of candidate synchronization signal block indexes respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

4. 4. The method of claim 3, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes, each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH comprised in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a sequence index of the DMRS of the PBCH comprised in any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

5. 4. The method of claim 3, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs comprising a plurality of first type information, both the first type information and a sequence index of the DMRS comprised in each PBCH among the plurality of PBCHs together correspond to one of the plurality of candidate synchronization signal block indexes, and a sequence index of the first type information or the DMRS in the PBCH comprised in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from a sequence index of the first type information or the DMRS in the PBCH comprised in any first type synchronization signal block among the one or more first type synchronization signal blocks.

6. 6. The method of claim 1, wherein a time domain resource occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a time domain resource occupied by any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

7. 7. The method of claim 3, comprising receiving first configuration information, said first configuration information comprising parameters of said plurality of candidate synchronization signal blocks.

8. 8. The method of claim 1, further comprising receiving second configuration information, wherein the second configuration information is used to determine whether 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, or the second configuration information is used to determine a quantity of the one or more second-type synchronization signal blocks, or the second configuration information is used to determine the one or more second-type synchronization signal blocks.

9. The method of claim 8 , wherein the second configuration information is configured by secondary control information SCI, or the second configuration information is configured by operation, administration and maintenance (OAM).

10. 10. The method of claim 1, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on a first link, and each second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on a second link.

11. receiving a first signaling; 11. The method of claim 1, 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.

12. 12. The method of claim 11, wherein the first signaling comprises one or more first-type beam indices, the one or more first-type beam indices corresponding to one or more first-type beams, respectively, and the one or more first-type beams being used to transmit signals on a first link.

13. 13. The method of claim 11, wherein the first signaling comprises one or more first-type frequency domain resource indices, the one or more first-type frequency domain resource indices corresponding to one or more first-type frequency domain resources, respectively, the one or more first-type frequency domain resources being used to transmit the one or more first-type synchronization signal blocks.

14. 1. A method for a second node used for wireless communication, comprising: sending one or more first-type synchronization signal blocks, each first-type synchronization signal block among the one or more first-type synchronization signal blocks comprising first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indexes; a first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more first-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more first-type synchronization signal blocks, the first node configured to receive one or more second-type synchronization signal blocks from the one or more first-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more first ... second-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more first-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal blocks, the second node configured to receive one or more second-type synchronization signal blocks from the one or more second-type synchronization signal

15. 15. The method of claim 14, wherein an index of at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from an index of any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

16. 16. The method of claim 14 or 15, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the plurality of candidate synchronization signal block indexes respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

17. 17. The method of claim 16, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes, each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH comprised in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a sequence index of the DMRS of the PBCH comprised in any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

18. 17. The method of claim 16, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs comprising a plurality of first type information, both the first type information and a sequence index of the DMRS comprised in each PBCH among the plurality of PBCHs together correspond to one of the plurality of candidate synchronization signal block indexes, and a sequence index of the first type information or the DMRS in the PBCH comprised in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from a sequence index of the first type information or the DMRS in the PBCH comprised in any first type synchronization signal block among the one or more first type synchronization signal blocks.

19. 19. The method of claim 14, wherein a time domain resource occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a time domain resource occupied by any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

20. sending first configuration information; the first configuration information comprises parameters of the plurality of candidate synchronization signal blocks; 20. The method of any one of claims 16 to 19.

21. sending second configuration information; the second configuration information is used to determine whether 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, or the second configuration information is used to determine the quantity of the one or more second-type synchronization signal blocks; 21. The method of any one of claims 14 to 20.

22. 22. The method of claim 21, wherein the second configuration information is configured by secondary control information SCI, or the second configuration information is configured by operation, administration and maintenance (OAM).

23. 23. The method of claim 14, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks is transmitted on a first link, and each second-type synchronization signal block among the one or more second-type synchronization signal blocks is transmitted on a second link.

24. 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.

24. The method of any one of claims 14 to 23.

25. 25. The method of claim 24, wherein the first signaling comprises one or more first-type beam indices, the one or more first-type beam indices corresponding to one or more first-type beams, respectively, and the one or more first-type beams being used to transmit signals on the first link, respectively.

26. 26. The method of claim 24 or 25, wherein the first signaling comprises one or more first-type frequency domain resource indices, the one or more first-type frequency domain resource indices corresponding to one or more first-type frequency domain resources, respectively, used to transmit the one or more first-type synchronization signal blocks.

27. A node used for wireless communication, said node being a first node, said first node comprising: a first receiving module configured to receive one or more first-type synchronization signal blocks, wherein each first-type synchronization signal block among the one or more first-type synchronization signal blocks comprises first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes; a first sending module configured to send one or more second-type synchronization signal blocks, wherein each second-type synchronization signal block among the one or more second-type synchronization signal blocks comprises the first information, an index of each second-type synchronization signal block among 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 among the one or more second-type synchronization signal blocks is different from each first-type synchronization signal block among the one or more first-type synchronization signal blocks; A node comprising:

28. 28. The node of claim 27, wherein an 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 each first-type synchronization signal block among the one or more first-type synchronization signal blocks.

29. 29. The node of claim 27 or 28, wherein each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the plurality of candidate synchronization signal block indexes respectively correspond to the plurality of candidate synchronization signal blocks in the first period.

30. 30. The node of claim 29, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), a sequence index of each DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes, each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH comprised in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a sequence index of the DMRS of the PBCH comprised in any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

31. 30. The node of claim 29, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs comprising a plurality of first type information, a sequence index of the first type information and the DMRS comprised in each PBCH among the plurality of PBCHs together corresponds to one of the plurality of candidate synchronization signal block indexes, and a sequence index of the first type information or the DMRS in the PBCH comprised in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from a sequence index of the first type information or the DMRS in the PBCH comprised in any first type synchronization signal block among the one or more first type synchronization signal blocks.

32. 32. The node of claim 27, wherein time domain resources occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks are different from time domain resources occupied by any first-type synchronization signal block among the one or more first-type synchronization signal blocks.

33. a second receiving module configured to receive the first configuration information; the first configuration information comprises parameters of the plurality of candidate synchronization signal blocks; 33. A node according to any one of claims 29 to 32.

34. a third receiving module configured to receive second configuration information; the second configuration information is used to determine whether at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from each first-type synchronization signal block among the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the quantity of the one or more second-type synchronization signal blocks; 34. A node according to any one of claims 27 to 33.

35. 35. The node of claim 34, wherein the second configuration information is configured by secondary control information SCI, or the second configuration information is configured by operation, administration and maintenance (OAM).

36. 36. The node of claim 27, wherein each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

37. a fourth receiving module configured to receive the 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.

37. A node according to any one of claims 27 to 36.

38. 38. The node of claim 37, wherein the first signaling comprises one or more first type beam identifiers, the one or more first type beam identifiers each corresponding to one or more first type beams, and the one or more first type beams each being used to transmit a signal on the first link.

39. 39. The node of claim 37 or 38, wherein the first signaling comprises one or more first-type frequency domain resource identifiers, the one or more first-type frequency domain resource identifiers corresponding to one or more first-type frequency domain resources, respectively, the one or more first-type frequency domain resources being used to transmit the one or more first-type synchronization signal blocks.

40. A node used for wireless communication, said node being a second node, said second node comprising: a first sending module configured to send one or more first-type synchronization signal blocks, each first-type synchronization signal block among the one or more first-type synchronization signal blocks comprising first information, and an index of each first-type synchronization signal block among the one or more first-type synchronization signal blocks being one of a plurality of candidate synchronization signal block indexes; the one or more first-type synchronization signal blocks are used to trigger a first node to transmit one or more second-type synchronization signal blocks, each second-type synchronization signal block among the one or more second-type synchronization signal blocks comprises the first information, an index of each second-type synchronization signal block among 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 among the one or more second-type synchronization signal blocks is different from each first-type synchronization signal block among the one or more first-type synchronization signal blocks; node.

41. 41. The node of claim 40, wherein an 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 each first-type synchronization signal block among the one or more first-type synchronization signal blocks.

42. 42. The node of claim 40 or 41, wherein each first type synchronization signal block among the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal blocks in a first period, and the plurality of candidate synchronization signal block indexes correspond to the plurality of candidate synchronization signal blocks in the first period, respectively.

43. 43. The node of claim 42, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of physical broadcast channels (PBCHs), each of the plurality of PBCHs carrying a plurality of demodulation reference signals (DMRSs), a sequence index of any DMRS among the plurality of DMRSs corresponds to at least one of the plurality of candidate synchronization signal block indexes, each second-type synchronization signal block among the one or more second-type synchronization signal blocks is one of the plurality of candidate synchronization signal blocks, and a sequence index of the DMRS of the PBCH comprised in at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from a sequence index of the DMRS of the PBCH comprised in each first-type synchronization signal block among the one or more first-type synchronization signal blocks.

44. 43. The node of claim 42, wherein the plurality of candidate synchronization signal blocks each comprise a plurality of PBCHs, each of the plurality of PBCHs carrying a plurality of DMRSs, each of the plurality of PBCHs comprising a plurality of first type information, a sequence index of the first type information and the DMRS comprised in each PBCH among the plurality of PBCHs together corresponds to one of the plurality of candidate synchronization signal block indexes, and a sequence index of the first type information or the DMRS in the PBCH comprised in at least one second type synchronization signal block among the one or more second type synchronization signal blocks is different from a sequence index of the first type information or the DMRS in the PBCH comprised in each first type synchronization signal block among the one or more first type synchronization signal blocks.

45. 45. The node of claim 40, wherein time domain resources occupied by at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks are different from time domain resources occupied by each first-type synchronization signal block among the one or more first-type synchronization signal blocks.

46. a second sending module configured to send the first configuration information; the first configuration information comprises parameters of the plurality of candidate synchronization signal blocks; 46. ​​A node according to any one of claims 42 to 45.

47. a third sending module configured to send the second configuration information; the second configuration information is used to determine whether at least one second-type synchronization signal block among the one or more second-type synchronization signal blocks is different from each first-type synchronization signal block among the one or more first-type synchronization signal blocks, or the second configuration information is used to determine the quantity of the one or more second-type synchronization signal blocks; 47. A node according to any one of claims 40 to 46.

48. 48. The node of claim 47, wherein the second configuration information is configured by secondary control information SCI, or the second configuration information is configured by operation, administration and maintenance OAM.

49. 49. The node of claim 40, wherein each first type synchronization signal block among the one or more first type synchronization signal blocks is transmitted on a first link, and each second type synchronization signal block among the one or more second type synchronization signal blocks is transmitted on a second link.

50. a fourth sending module configured to send the 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.

50. A node according to any one of claims 40 to 49.

51. 51. The node of claim 50, wherein the first signaling comprises one or more first type beam identifiers, the one or more first type beam identifiers each corresponding to one or more first type beams, and the one or more first type beams each being used to transmit a signal on the first link.

52. 52. The node of claim 50 or 51, wherein the first signaling comprises one or more first-type frequency domain resource identifiers, the one or more first-type frequency domain resource identifiers corresponding to one or more first-type frequency domain resources, respectively, the one or more first-type frequency domain resources being used to transmit the one or more first-type synchronization signal blocks.

53. 27. A node used for wireless communication, comprising a transceiver, a memory, and a processor, wherein the memory is configured to store a program, and the processor is configured to invoke the program in the memory and to control the transceiver to receive or transmit signals, such that the node performs the method of any one of claims 1 to 13 or claims 14 to 26.

54. 27. An apparatus comprising a processor configured to call a program from a memory to cause the apparatus to perform a method according to any one of claims 1 to 13 or claims 14 to 26.

55. A chip comprising a processor configured to call a program from a memory to cause a device to which the chip is attached to perform the method of any one of claims 1 to 13 or claims 14 to 26.

56. 27. A computer-readable storage medium storing a program that causes a computer to perform the method of any one of claims 1 to 13 or claims 14 to 26.

57. A computer program product comprising a program that causes a computer to carry out the method of any one of claims 1 to 13 or claims 14 to 26.

58. A computer program causing a computer to carry out the method of any one of claims 1 to 13 or claims 14 to 26.

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