Terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device receives first information sent by a network device, wherein the first information is used for indicating a first resource, and the first resource is associated with a first synchronization signal block (SSB). The first information is further used for indicating a second resource, and the second resource is associated with a second SSB. According to embodiments of the present application, the first information indicates a resource (i.e., the first resource and / or the second resource) associated with an SSB (the first SSB and / or the second SSB), so that the terminal device can obtain and send uplink synchronization between TRPs of the first SSB according to the indicated first resource, and / or can obtain and send uplink synchronization between TRPs of the second SSB according to the indicated second resource.

Description

1 / 44 Terminal device and network device FIELD OF TECHNIQUE

[001] This application relates to the field of communication technologies, and more specifically to a wireless communication method, a terminal device and a network device. BACKGROUND

[002] In a scenario with multiple transmitting and receiving points (TRPs), determining the resources corresponding to different TRPs is an urgent problem to be solved. SUMMARY

[003] This application provides a communication method, a network device, and a terminal device. The aspects related to this application are described below.

[004] According to a first aspect, a wireless communication method is provided, and the method includes: receiving, by a terminal device, of first information transmitted by a network device, where the first information is used to indicate a first resource, and the first resource is associated with a first block of SSB synchronization signal.

[005] In some implementations, the first information is additionally used to start a second resource, and the second resource is associated with the second SSB.

[006] In some implementations, the first resource and the second resource are random access radio resources.

[007] In some implementations, the first Petition 870250083218, dated 09 / 16 / 2025, page 8 / 115 The second resource, 2 / 44, is used for uplink synchronization from the terminal device to the server cell.

[008] In some implementations, the first resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmits the first SSB.

[009] In some implementations, the second resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmitting the second SSB.

[0010] According to a second aspect, a wireless communication method is provided, and the method includes: transmitting, via a network device, initial information to a terminal device, where the initial information is used to indicate a first resource, and the first resource is associated with a first SSB synchronization signal block.

[0011] In some implementations, the first information is additionally used to indicate a second resource, and the second resource is associated with the second SSB.

[0012] In some implementations, the first resource and the second resource are random access radio resources.

[0013] In some implementations, the first resource and the second resource are used for uplink synchronization from the terminal device to the server cell.

[0014] In some implementations, the first resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmits the first SSB. Petition 870250083218, dated 09 / 16 / 2025, page 9 / 115 3 / 44

[0015] In some implementations, the second resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmitting the second SSB.

[0016] According to a third aspect, a terminal device is provided, including: a receiving unit, configured to receive first information transmitted by a network device, where the first information is used to indicate a first resource, and the first resource is associated with a first SSB synchronization signal block.

[0017] In some implementations, the first SSB is configured in an existing server cell of the terminal device, and the first SSC comprises all SSBs in the server cell except for a second SSB.

[0018] In some implementations, the second SSB is a CD-SSB cell-defining synchronization signal block broadcast in a portion of the initial carrier bandwidth of the server cell.

[0019] In some implementations, the first information is additionally used to indicate a second resource, and the second resource is associated with the second SSB.

[0020] In some implementations, the first resource and the second resource are random access radio resources.

[0021] In some implementations, the first resource and the second resource are used for uplink synchronization from the terminal device to the server cell.

[0022] In some implementations, the first resource is used for uplink synchronization between Petition 870250083218, dated 09 / 16 / 2025, page 10 / 115 4 / 44 the terminal device and a TRP that is in the server cell and that transmits the first SSB.

[0023] In some implementations, the second resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmitting the second SSB.

[0024] In some implementations, the first pieces of information are one bit.

[0025] In some implementations, the first information is loaded in a physical downlink control channel order (PDCCH).

[0026] According to a fourth aspect, a network device is provided, including: a transmission unit, configured to transmit first information to a terminal device, where the first information is used to indicate a first resource, and the first resource is associated with a first SSB synchronization signal block.

[0027] In some implementations, the first SSB is configured in an existing server cell of the terminal device, and the first SSB comprises all SSBs in the server cell except for a second SSB.

[0028] In some implementations, the second SSB is a CD-SSB cell-defining synchronization signal block broadcast in a portion of the initial carrier BWP bandwidth of the server cell.

[0029] In some implementations, the first information is additionally used to indicate a second resource, and the second resource is associated with the second SSB.

[0030] In some implementations, the first Petition 870250083218, dated 09 / 16 / 2025, page 11 / 115 5 / 44 resource and the second resource are random access radio resources.

[0031] In some implementations, the first resource and the second resource are used for uplink synchronization from the terminal device to the server cell.

[0032] In some implementations, the first resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmits the first SSB.

[0033] In some implementations, the second resource is used for uplink synchronization between the terminal device and a TRP that is in the server cell and transmitting the second SSB.

[0034] In some implementations, the first pieces of information are one bit.

[0035] In some implementations, the first information is loaded in a physical downlink control channel order (PDCCH).

[0036] According to a fifth aspect, a terminal device is provided, including: a processor, a memory, and a communication interface. The memory is configured to store one or more computer programs, and the processor is configured to invoke the computer programs in memory to cause the terminal device to execute some or all of the steps in the method according to the first aspect.

[0037] According to a sixth aspect, a network device is provided, including: a processor, memory and a communication interface, wherein the memory is configured to store one or more computer programs, Petition 870250083218, dated 09 / 16 / 2025, page 12 / 115 6 / 44 and the processor is configured to invoke computer programs in memory to cause the network device to execute some or all of the steps of the method according to the second aspect.

[0038] According to a seventh aspect, one embodiment of this application provides a communications system, where the communications system includes the terminal and / or network device described above. In another possible design, the communications system may additionally include another device that interacts with the terminal device or the network device in the solution provided in the embodiments of this application.

[0039] According to an eighth aspect, an embodiment of this application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and the computer program causes a terminal device or a network device to perform some or all of the steps in the method according to the preceding aspects.

[0040] According to a ninth aspect, an embodiment of this application provides a computer program product. The computer program product includes a non-transient, computer-readable storage medium that stores a computer program, and the computer program is operable to cause a terminal device or a network device to perform some or all of the steps in the method according to the preceding aspects. In some implementations, the computer program product may be a software installation package.

[0041] According to a tenth aspect, a Petition 870250083218, dated 09 / 16 / 2025, p. 13 / 115 7 / 44 This application provides a chip. The chip includes a memory and a processor. The processor can invoke a computer program from memory and execute the computer program to implement some or all of the steps described in the method according to the preceding aspects.

[0042] In some cases, a TRP may be associated with a synchronization signal block / physical broadcast channel signal (synchronization signal block and PBCH, SSB). For example, a terminal device may determine a corresponding TRP based on a received SSB. Therefore, in embodiments of this application, a resource corresponding to a TRP associated with a first SSB may be determined by indicating, through first information, a resource (namely, a first resource) associated with an SSB (namely, the first SSB), which helps the terminal device to determine resources corresponding to different TRPs. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1A and Figure 1C are architectural diagrams of communication systems to which an embodiment of this application is applicable.

[0044] Figure 2 is a schematic flowchart of a four-step random access procedure.

[0045] Figure 3 is an example diagram of a relationship between an uplink frame and a downlink frame in a TA scenario.

[0046] Figure 4 is a schematic flowchart of a wireless communication method according to an embodiment of this application.

[0047] Figure 5 is a schematic diagram of a terminal device structure according to a Petition 870250083218, dated 09 / 16 / 2025, page 14 / 115 8 / 44 modality of this request.

[0048] Figure 6 is a schematic structural diagram of a network device, according to an embodiment of this application.

[0049] Figure 7 is a schematic diagram of a communication device structure according to an embodiment of the application. DETAILED DESCRIPTION OF THE MODALITIES

[0050] Technical solutions in this application are described below with reference to the attached drawings. COMMUNICATIONS SYSTEM ARCHITECTURE

[0051] The solutions of the technique in embodiments of this application can be applied to various communication systems, for example, a global system for mobile communications (GSM), a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an advanced long term evolution (LTE-A) system, a new radio (NR) system, an evolved NR system, LTE-based access to unlicensed spectrum (LTE-EU), NR-based access to unlicensed spectrum (NR-U), a non-terrestrial network (NTN) system,a universal mobile telecommunication system (UMTS), a wireless local area network, Petition 870250083218, dated 09 / 16 / 2025, page 15 / 115 9 / 44 (wireless local area networks, WLAN), wireless fidelity (WiFi), a fifth-generation (5G) system, or another communication system, for example, a future communication system such as a sixth-generation mobile communications system or a satellite communications system.

[0052] Generally, the number of connections supported by a conventional communications system is limited and also easy to implement. However, with the development of communication technologies, a mobile communications system not only supports conventional communication, but also supports, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. Modalities of this application may also be applied to these communication systems.

[0053] The communications system in the modalities of this application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) network deployment scenario.

[0054] The communication system in the embodiments of this application may be applied to an unlicensed spectrum, and the unlicensed spectrum may also be considered as a shared spectrum. Alternatively, the communication system in the embodiments of this application may be applied to a licensed spectrum, and the licensed spectrum may also be considered as a shared spectrum. Petition 870250083218, dated 09 / 16 / 2025, page 16 / 115 10 / 44 should be considered a dedicated spectrum.

[0055] Modalities of this application may be applied to an NTN system, or may be applied to a terrestrial communication network system (terrestrial networks, TN). By way of example and without limitation, the NTN system includes an NR-based NTN system and an IoT-based NTN system.

[0056] Modalities of this application are described with reference to a network device and a terminal device. The terminal device may also be referred to as user equipment (user equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile location, a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, a user appliance, or something similar.

[0057] In embodiments of this application, the terminal device may be a station (STATION, ST) on a WLAN, may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop station (WLL), a personal digital assistant device (PDA), a portable device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communications system such as an NR network, or a terminal device in a future evolved terrestrial mobile network. Petition 870250083218, dated 09 / 16 / 2025, page 17 / 115 11 / 44 public (public terrestrial mobile network, PLMN), or similar.

[0058] The terminal device in the embodiments of this application may be a device that provides a user with voice and / or data connectivity and is capable of connecting people, objects and machines, such as a portable device or a vehicle-mounted device that has wireless connection function.The terminal device in embodiments of this application may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, or similar. Optionally, the terminal device may be configured to function as a base station.For example, the terminal device can function as a scheduling entity, providing a side link signal between terminal devices in V2X, D2D, or similar systems. For example, a cell phone and a vehicle communicate with each other via a side link signal. A cell phone and a smart home device communicate with each other without relaying a communication signal through a base station. Petition 870250083218, dated 09 / 16 / 2025, page 18 / 115 12 / 44

[0059] In the embodiments of this application, the terminal device may be deployed on land, including in indoor or outdoor environments, and may be portable, wearable or vehicle-mounted. The terminal device may be deployed in water (for example, on a ship) or may be deployed in the air (for example, on an airplane, a hot air balloon or a satellite).

[0060] In the embodiments of this application, the terminal device may be a mobile phone, a pad, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, or similar.The terminal device involved in the embodiments of this application may also be referred to as a terminal, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile location, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communications device, UE agent, UE apparatus, or similar. The device. Petition 870250083218, dated 09 / 16 / 2025, page 19 / 115 13 / 44 terminal can also be fixed or mobile.

[0061] As an example, instead of limitation, in the embodiments of this application, the terminal device may alternatively be a wearable device. The wearable device may also be referred to as a smart wearable device, and is a general term for wearable devices such as eyeglasses, gloves, watches, clothing, and shoes that are developed by applying wearable technologies to smart everyday wearable designs. The wearable device is a portable device that is worn directly on the body or integrated into a user's clothing or accessory. The wearable device is not only a hardware device but also implements power functions through software support, data interaction, and cloud interaction.In a broad sense, a wearable smart device can be a large, feature-rich device that can implement some or all functions without relying on a smartphone, for example, a smartwatch or smart glasses, or a device that focuses only on a specific type of application function and needs to be used together with another device, such as smartphones, for example, various types of smart bracelets and smart jewelry that monitor physical signals.

[0062] The network device in the modalities of this request may be a device for communicating with the terminal device. 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 modalities of this request may be a node (or device) of Petition 870250083218, dated 09 / 16 / 2025, p. 20 / 11514 / 44 radio access network (RAN) that connects the terminal device to a wireless network.The term "base station" can broadly encompass several of the following names, or may be replaced by the following names: a Node B (NodeB), an evolved Node B (eNB), a next-generation Node B (gNB), a relay station, an access point, a transmitting and receiving point (TRP), a transmitting point (TP), a master eNodeB (MeNB), a secondary eNodeB (SeNB), a multi-pattern radio node (MSR), a home base station, a network controller, an access node, a wireless node, an access point (AP), a transmitting node, a transceiver node, a baseband unit (BBU), a remote radio unit (RRU), an active antenna unit (AAU), a remote radio head (RRH), a central unit (CU), a distributed unit (unit). distributed, DU), a positioning node, or similar.The base station can be a macro base station, a micro base station, a relay node, a donor node, or something similar, or a combination thereof. Alternatively, the base station can be a communications module, a modem, or a chip located in the device or apparatus described above. Alternatively, the base station can be a mobile switching center, a device that functions as a base station in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, a device that functions as a base station in a future communication system, or similar. The base station can support networks with the same access technology. Petition 870250083218, dated 09 / 16 / 2025, p. 21 / 115 15 / 44 or different access technologies. A specific technology and a specific device form used by the network device are not limited within the scope of this application.

[0063] The base station can be a fixed or mobile base station. For example, a helicopter or an unmanned aerial vehicle can be configured to act as a mobile base station, and one or more cells can move based on the position of the mobile base station. In another example, a helicopter or an unmanned aerial vehicle can be configured to serve as a device in communication with another base station.

[0064] In some deployments, the network device in the embodiments of this application may be a CU or a DU, or the network device may include a CU and a DU. The gNB may additionally include an AAU.

[0065] The network device and the terminal device may be deployed on land, including in indoor or outdoor environments, and may be portable, wearable, or vehicle-mounted; they may be deployed on water (for example, on a ship); or they may be deployed in the air (for example, on an airplane, a hot air balloon, or a satellite). In the embodiments of this application, a scenario for the network device and the terminal device is not limited.

[0066] As an example, instead of a limitation, in embodiments of this request, the network device may have a mobility feature. For example, the network device may be a mobile device. In some embodiments of this request, the network device may be a satellite or a balloon station. For example, the satellite may be a low Earth orbit (LEO) satellite, a Petition 870250083218, dated 09 / 16 / 2025, p. 22 / 115 16 / 44 medium Earth orbit (MEO) satellite, a geostationary orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, or something similar. In some embodiments of this application, the network device may alternatively be a base station located on land, water, or similar.

[0067] In embodiments of this application, the network device may provide a service to a cell, and the terminal device communicates with the network device using a transmission resource (e.g., a frequency domain resource or a spectrum resource) used by the cell. The cell may be a cell corresponding to the network device (e.g., a base station). The cell may belong to a macro base station or belong to a base station corresponding to a small cell. The small cell in this document may include: a metro cell, a micro cell, a pico cell, a femto cell, or similar. These small cells have the feature of small coverage and low transmission power, and are suitable for providing a high-speed data transmission service.

[0068] By way of example, Figure 1A is a schematic diagram of a communications system architecture according to one embodiment of this application. As shown in Figure 1A, a communications system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communications terminal or terminal). The network device 110 may Petition 870250083218, dated 09 / 16 / 2025, page 23 / 115 17 / 44 provides communication coverage for a specific geographic area and can communicate with a terminal device located within that coverage.

[0069] Figure 1A shows an example where there is one network device and two terminal devices. In some embodiments of this application, the communication system 100 may include a plurality of network devices and another number of terminal devices may be included within the coverage of each network device, which is not limited in the embodiments of this application.

[0070] By way of example, Figure 1B is a schematic diagram of an architecture of another communications system according to an embodiment of this application. With reference to Figure 1B, the communications system includes a terminal device 120 and a satellite 110a, and wireless communication can be carried out between the terminal device 120 and the satellite 110a. A network formed between the terminal device 120 and the satellite 110a can also be referred to as an NTN. In the architecture of the communications system shown in Figure 1B, the satellite 110a can have the function of a base station, and direct communication can be carried out between the terminal device 120 and the satellite 110a. In the architecture of the communications system, the satellite 110a can be referred to as a network device.In some embodiments, the communications system may include a plurality of 110a network devices, and another number of terminal devices may be included within the coverage of each 110a network device, which is not limited to the embodiments of this application.

[0071] By way of example, Figure 1C is a schematic diagram of an architecture of yet another Petition 870250083218, dated 09 / 16 / 2025, p. 24 / 115 18 / 44 communications system according to an embodiment of this application. With reference to Figure 1C, the communications system includes a terminal device 120, a satellite 130, and a base station 110b. Wireless communication can be carried out between the terminal device 120 and the satellite 130, and communication can be carried out between the satellite 130 and the base station 110b. A network formed between the terminal device 120, the satellite 130, and the base station 110b can also be referred to as an NTN. In the architecture of the communications system shown in Figure 1C, the satellite 130 may not have the function of a base station, and the communication between the terminal device 120 and the base station 110b needs to be relayed using the satellite 130. Under this system architecture, the base station 110b can be referred to as a network device.In some embodiments of this application, the communication system may include a plurality of 110b network devices, and another number of terminal devices may be included within the coverage of each 110b network device, which is not limited in the embodiments of this application.

[0072] It should be noted that Figure 1A and Figure 1C are only examples of systems to which this application is applicable. Certainly, the methods shown in the embodiments of this application can also be applied to another system, such as a 5G communications system or an LTE communications system. This is not specifically limited to embodiments of this application.

[0073] In some embodiments of this application, the wireless communication systems shown in Figure 1A and Figure 1C may additionally include another network entity, Petition 870250083218, dated 09 / 16 / 2025, p. 25 / 115 19 / 44 as a mobility management entity (MME) or an access and mobility management function (AMF), which is not limited to the embodiments of this application.

[0074] It should be understood that a device with a communication function in a network / system in embodiments of this application may be referred to as a communication device. The communication system 100 shown in Figure 1A is used as an example. The communication device may include the network device 110 and the terminal device 120 that have a communication function. The network device 110 and the terminal device 120 may be specific devices described above, and the details are not described again in this document. The communication device may additionally include another device in the communication system 100, for example, another network entity, such as a network controller or a mobility management entity, which is not limited in the embodiments of this application.

[0075] It should be understood that, in the modalities of this application, the indication mentioned herein may refer to a direct indication, or it may refer to an indirect indication, or it may mean that there is an association relationship. For example, A indicates B, which may mean that A directly indicates B, for example, B can be obtained through A; or it may mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or it may mean that there is an association relationship between A and B.

[0076] In the description of the modalities of this request, the term "correspond" may mean that there is a Petition 870250083218, dated 09 / 16 / 2025, p. 26 / 115 20 / 44 direct or indirect correspondence between the two, or it may mean that there is an associative relationship between the two, or it may mean that there is a relationship such as indicating and being indicated, or configuring and being configured.

[0077] The term configuration in the modalities of this application may include configuration performed using at least one of the following: system information, radio resource control (RRC) signaling, or a media access control element (CE) or MAC.

[0078] In some embodiments of this application, predefined or pre-set may be implemented in a manner in which the corresponding code, a table, or other related information used for indication is pre-stored in a device (for example, including a terminal device and a network device). A specific implementation is not limited in this application. For example, being predefined may refer to being defined in a protocol.

[0079] In some embodiments of this application, the protocol or standard may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied to a future communications system, which is not limited in this application.

[0080] To facilitate understanding, some technical knowledge related to the modalities of this application is introduced first. The following related technologies, as optional solutions, may be randomly combined with the technical solutions of the modalities of this application. Petition 870250083218, dated 09 / 16 / 2025, p. 27 / 115 21 / 44 application, all of which are within the scope of protection of the provisions of this application. Provisions of this application include at least part of the following content. RANDOM ACCESS PROCEDURE

[0081] A terminal device can establish a connection with a cell by initiating a random access procedure and obtaining uplink synchronization information. The random access procedure can be triggered in a plurality of ways. For example, the random access procedure can be triggered by a physical downlink control channel (PDCCH) order, and a network device can instruct, using the order, the terminal device to restart random access. As another example, the random access procedure can be triggered by a media access control (MAC) sublayer. In this case, the terminal device can select a preamble itself to initiate random access.As another example, the random access procedure can be triggered by a higher layer, for example, initial access, RRC connection re-establishment, and handover transfer.

[0082] Random access can include contention-free random access and contention-free random access (containment-free random access channel, CFRA).

[0083] Random access by contention may include a four-step random access procedure and a two-step random access procedure. As shown in Figure 2, the four-step random access procedure may include steps S210 through S240. Petition 870250083218, dated 09 / 16 / 2025, page 28 / 115 22 / 44

[0084] In step S210, a terminal device transmits a random access request to a network device, and the random access request may include a random access preamble. The random access request may also be referred to as a first message or message 1 (Msg1) in the random access procedure.

[0085] In step S220, after detecting the random access preamble transmitted by the terminal device, the network device transmits a random access response (RAR) to the terminal device. A RAR message may also be referred to as a second message or a message 2 (Msg2) in the random access procedure.

[0086] In some embodiments, the RAR may include a TAC field to indicate uplink synchronization information used between the terminal device and the network device. Thus, in an initial access procedure, the terminal device may obtain an initial TA value from the RAR message.

[0087] In step S230, the terminal device transmits a message 3 (Msg3) to the network device, where message 3 can be used to notify the network device about an event that triggers the random access procedure. For example, if the event is an initial random access procedure, a terminal device identity and an establishment cause are carried in message 3; if the event is RRC reestablishment, a connected state terminal device identity and an establishment cause are carried. Petition 870250083218, dated 09 / 16 / 2025, page 29 / 115 23 / 44 are carried in message 3.

[0088] In the S240 step, the network device transmits a message 4 (Msg4) to the terminal device, where message 4 can be used for conflict resolution. Therefore, message 4 can also be referred to as a contention resolution message.

[0089] For contention-free random access, the random access procedure may include step S210 and step S220. Additionally, for contention-free random access, a message 0, such as a PDCCH order, must be sent before message 1. UPWARD LINK SYNCHRONIZATION

[0090] Uplink synchronization refers to a process in which uplink signals from terminal devices located in different locations within a service cell and using the same slot simultaneously reach a receiving antenna of a network device; that is, signals from different terminal devices reach the receiving antenna of the network device synchronously in the same slot. The goal of uplink synchronization is to reduce multiple access interference on the uplink and multipath interference between terminal devices in a service cell.

[0091] In an uplink synchronization process, a terminal device can perform uplink synchronization with a network device based on uplink synchronization information corresponding to the network device. Uplink synchronization information may include, for example, timing advance (TA). Petition 870250083218, dated 09 / 16 / 2025, page 30 / 115 24 / 44 TIMING ADVANCE (TA)

[0092] TA is generally used for uplink transmission and can mean that a system frame in which a terminal device transmits uplink data must be a specific time ahead of a corresponding downlink frame. For example, timing refers to a time by which a terminal device performs the transmission before a downlink reference that is the first path (i.e., the first symbol of a slot in which a channel is located) of a downlink channel received by the terminal device. Figure 3 shows a relationship between an uplink frame and a downlink frame. With reference to Figure 3, a terminal device operating in single-TRP (sTRP) mode is used as an example.The terminal device transmits an uplink channel or signal at an earlier time, by a specific timing advance (TA), relative to a reference point that is a downlink receive time point of the terminal device.

[0093] A carrier aggregation scenario is used as an example. The terminal device can support different carriers (also referred to as “server cells”). Different carriers can have different TAs. Therefore, a concept of a timing advance group (TA group, TAG) is introduced. Generally, a TAG can include TAs from one or more server cells.

[0094] In some implementations, TA can be adjusted based on an absolute TA value (also referred to as "absolute TA"). The network device can Petition 870250083218, dated 09 / 16 / 2025, page 31 / 115 25 / 44 directly provide an absolute TA using an absolute MAC CE or a payload of a random access response (MAC RAR).

[0095] In some scenarios, absolute TA and the TA acquisition method described above occur in a random access procedure. Uplink Synchronization in the Multi-TRP Scenario

[0096] A multi-TRP scenario can be a scenario in which a service cell configures a plurality of TRPs for an endpoint device.

[0097] Up to R17, for a service cell configured with a plurality of TRPs, a time difference between uplink signal transmissions from a terminal device to the TRPs cannot be greater than the length of a CP (cyclic prefix), i.e., the same TA is applied for transmissions from the terminal device to the TRPs.

[0098] In the discussion about MIMO in R18, to allow relatively flexible distances between a terminal device and TRPs, a difference between uplink TAs for transmissions between the terminal device and the TRPs can exceed one CP, i.e., different TAs can be applied for transmissions from the terminal device to different TRPs, and can belong to different TAGs.

[0099] As mentioned above, in a random access procedure, the TA can be obtained from a RAR message. In a case where different TAs are applied for transmissions from the terminal device to different Petition 870250083218, dated 09 / 16 / 2025, page 32 / 115 26 / 44 Absolute TRPs and TAs for transmissions between the terminal device and the TRPs can be obtained using a CFRA procedure triggered by a PDCCH order.

[00100] For example, after receiving the PDCCH order, the terminal device may transmit a preamble on an indicated physical random access channel (PRACH) resource based on the PRACH resource and on a dedicated random access resource, such as a dedicated preamble or a related SSB (or may be referred to as a synchronization signal block), which are indicated in the PDCCH order. After receiving the preamble, a base station will return a message, which may include a RAR unit. The RAR unit may include an absolute TA that is for transmission from the terminal device to the base station and estimated based on the received preamble.

[00101] In a multi-TRP scenario, determining the resources corresponding to different TRPs is an urgent problem to be solved.

[00102] In some cases, a TRP may be associated with an SSB, for example, a terminal device may determine a corresponding TRP based on a received SSB.

[00103] Therefore, to solve the aforementioned problem, in embodiments of this application, first information can be used to indicate a resource (i.e., a first resource) associated with an SSB (i.e., a first SSB), so that a resource corresponding to a TRP associated with the first SSB can be determined, which helps the terminal device to determine resources corresponding to different TRPs.

[00104] Figure 4 is a schematic flowchart of a wireless communication method according to a modality. Petition 870250083218, dated 09 / 16 / 2025, page 33 / 115 27 / 44 of this request.

[00105] With reference to Figure 4, method 400 may include step S410.

[00106] In step S410, a terminal device receives the first information transmitted by a network device.

[00107] The terminal device and the network device can be, for example, a terminal device 120 and a network device 110 (for example, a network device 110 in Figure 1A, a satellite 110a in Figure 1B, and a base station 110b in Figure 1C) shown in Figure 1.

[00108] The initial information can be used to indicate a first resource, and the first resource can be associated with a first SSB. As described above, if the first resource associated with the first SSB is determined, the first resource will be determined as a resource corresponding to a TRP associated with the first SSB.

[00109] In a current service cell of a terminal device, a plurality of SSBs may be associated with the terminal device.

[00110] For example, the SSBs associated with the terminal device may include a broadcast SSB for an initial carrier bandwidth portion (BWP) in the service cell, i.e., a cell defining synchronization signal block (SSB-defining cell, CD-SSB for short). In NR, a service cell may include a plurality of BWPs. The initial BWP may be a BWP used for initial access by the terminal device.

[00111] For another example, the SSB associated with Petition 870250083218, dated 09 / 16 / 2025, page 34 / 115 28 / 44 terminal device may include other SSBs configured for the terminal device in the service cell. The other SSBs mentioned in this document may be SSBs associated with an additional (or incremental) physical cell identifier (Physical Cell ID, PCI).

[00112] Consequently, in a current terminal device service cell, there may be a plurality of TRPs associated with the terminal device, i.e., a multi-TRP scenario. The TRPs associated with the terminal device may include a service TRP and may additionally include an additional TRP. The service TRP may be associated with the CD-SSB mentioned above (namely, a second SSB), and the additional TRP may be associated with the first SSB. In other words, the first SSB may be SSBs in the service cell, except for the second SSB, namely, the other SSBs described above.

[00113] In one implementation, the first SSB can be one of the other SSBs described above, that is, each of the other SSBs described above can be configured with a respective resource. If there are N other SSBs in total, the resources are configured respectively for the N SSBs, and thus it is necessary to reserve N resources. Furthermore, when a resource associated with the first SSB is indicated using the first information, at least log2N bits (bit) need to be reserved for the first information.

[00114] If N is relatively large, according to the method mentioned, relatively high resource overheads and signaling overheads carrying the initial information may occur. In another implementation, the Petition 870250083218, dated 09 / 16 / 2025, page 35 / 115 29 / 44 The first SSB can include a plurality of SSBs in the other SSBs described above, that is, the same resource can be configured for a plurality of SSBs, thus facilitating the reduction of resource overhead and signaling overhead that carries the first information.

[00115] In practice, a beam can be activated by activating a terminal control interface (TCI) state, so that an SSB referenced by the beam can be implicitly activated; for example, the SSB could be the other SSBs described above. However, only one SSB can be activated by activating the TCI state at any given time; that is, at any given time, only one of the plurality of SSBs, except the second SSB in a current service cell of the terminal device, is generally in an active state. The plurality of SSBs in the current service cell, except the second SSB, are associated with an additional TRP. Similarly, at any given time, only one additional TRP in a plurality of additional TRPs configured for the terminal device in the current service cell is in an active state (the TRP may also be referred to as an active TRP).

[00116] For these reasons, the first SSB can include all SSBs except the second SSB in the current service cell; that is, the same resource can be configured for all SSBs configured for the terminal device in the current service cell, except the second SSB, thus further facilitating the reduction of resource overhead and signaling overhead that carry the first information. For example, a number of reserved resources can be reduced to one, and a number of bits. Petition 870250083218, dated 09 / 16 / 2025, page 36 / 115 The 30 / 44 reserved signaling bits that carry the first message can be reduced to 1 bit, thus greatly reducing signaling overhead.

[00117] In addition to the first SSB, the terminal device is usually required to configure a resource associated with the second SSB. In one implementation, a second resource can be indicated using the first information, and the second resource can be associated with the second SSB. Indicating the first and second resources using the same information is beneficial for reducing signaling and is easy to implement.

[00118] The first information can be used to indicate the first resource or the second resource using a generic identifier or a signaling bit. For example, the first information can be used to indicate both the first and second resources using a bit. In one example, when the first information is 0, this indicates the first resource; when the first information is 1, this indicates the second resource. In another example, when the first information is 1, this indicates the first resource; when the first information is 0, this indicates the second resource. It should be noted that the preceding examples are provided by way of example only, and are not limited to the present application.

[00119] In one implementation, a mapping relationship between the first information and the first resource and the second resource can be set up using RRC signaling.

[00120] In one implementation, the first and second features mentioned above can be radio features. Petition 870250083218, dated 09 / 16 / 2025, page 37 / 115 31 / 44 random access (PRACH resource). In other words, the first resource could be a random access radio resource associated with an additional TRP, and the second resource could be a random access radio resource associated with a service TRP.

[00121] In one implementation, the first resource and the second resource can be used for uplink synchronization of the terminal device in a service cell. For example, the first resource can be used for uplink synchronization between the terminal device and a TRP that transmits the first SSB in the server cell. As another example, the second resource can be used for uplink synchronization between the terminal device and a TRP that transmits the second SSB in the service cell. The service cell mentioned in this document can be the terminal device's current service cell.

[00122] The first SSB may be associated with the additional TRP, and the second SSB may be associated with the service TRP. To be specific, the first resource may be used for synchronization uplink between the terminal device and an additional TRP configured in an existing service cell, and the second resource may be used for synchronization uplink between the terminal device and a service TRP in the existing service cell.

[00123] The initial information can be carried in a plurality of signaling types. In one implementation, the initial information can be carried in a physical downlink control channel order.

[00124] The following text introduces the method of Petition 870250083218, dated 09 / 16 / 2025, page 38 / 115 32 / 44 wireless communications provided in the embodiments of this application, using an example in which the first feature and the second feature are used for uplink synchronization of the terminal device.

[00125] At the RAN1#112 meeting, RAN1 reached the following conclusion.

[00126] The following working assumption is confirmed.

[00127] For multi-TRP operation between cells based on multi-DCI with two TA enhancements, a PRACH configuration is supported for each additional configured PCI; and the additional PRACH configuration can be used in a random access channel (RACH) procedure triggered by a PDCCH order for the corresponding additional configured PCI.

[00128] In RAN1#112bis, RAN1 draws the following conclusion.

[00129] For multi-TRP operation based on multi-DCI between cells with two TA enhancement, indication of which PRACH configuration should be used in the RACH procedure in the PDCCH order is supported.

[00130] It was also suggested at the meeting that further discussions would be held on: whether an additional PCI or a generic identifier is indicated in the PDCCH order; and the detail of the indication in the PDCCH order in terms of whether there should be support for PRACH triggered for an inactive additional PCI.

[00131] Based on this, each of the associated TRPs Petition 870250083218, dated 09 / 16 / 2025, page 39 / 115 33 / 44 to different additional PCIs can be configured with a respective PRACH feature, for example, the configuration can be carried over in the RRC signaling.

[00132] A TRP associated with an additional PCI may also be referred to as an additional TRP. In an implementation, each additional TRP may be indicated using an additional PCI associated with the additional TRP, for example, it may be indicated using an additional PCI index (additionalPCIIndex) associated with the additional TRP. According to a protocol, the additional PCI index may be greater than or equal to 1 and less than or equal to 7 (i.e., 7 >= additionalPCIIndex >= 1). In other words, an additional number of TRPs may range from 1 to 7.

[00133] In addition, according to the protocol, a PRACH resource is also configured for the service TRP (namely, a TRP not associated with additionalPCIIndex).

[00134] In one implementation, additionalPCIIndex can be used to indicate the two mentioned types of PRACH resources (a resource associated with the service TRP and resources associated with the additional TRPs), where the parameter corresponding to the service TRP can be set to 0. In this way, after receiving a resource indication, the terminal device can learn which PRACH resource is used to perform a random access procedure in order to obtain uplink synchronization for the corresponding TRP.

[00135] In an implementation, the resources used for additional TRP and service TRP can be indicated in PDCCH order.

[00136] As described above, the quantity of Petition 870250083218, dated 09 / 16 / 2025, page 40 / 115 34 / 44 Additional TRPs can range from 1 to 7, meaning a maximum of seven PRACH resources must be configured. If the PRACH resources corresponding to the service TRP and the additional TRP are indicated in PDCCH order, at least 3 bits must be reserved in the PDCCH order to identify the PRACH resources.

[00137] In some cases, different TRPs may be associated with different SSBs. Therefore, the terminal device may determine a TRP based on a received SSB.

[00138] A TRP associated with an SSB broadcast (which may be referred to as the second SSB) in an initial BWP may be the service TRP mentioned above. The SSB broadcast in the initial BWP mentioned in this document may be a CDSSB.

[00139] In addition, the terminal device is usually configured with other SSBs for broadcasting different additional PCIs. The other SSBs described above are associated with different additional PCIs, and different additional PCIs may be associated with the plurality of additional TRPs mentioned above. Therefore, the other SSBs may be associated with the plurality of additional TRPs.

[00140] Based on the mapping relationship between an SSB and a TRP, in an implementation, a resource associated with a TRP corresponding to an SSB can be determined based on the indication of a resource associated with the SSB. If each TRP is configured with a respective PRACH resource according to the previous method, that is, each SSB configured for a terminal device in a current service cell is configured with a respective PRACH resource, a signal of at least 3 bits is required to indicate the respective resources corresponding to the SSBs. In the previous way, there is Petition 870250083218, dated 09 / 16 / 2025, page 41 / 115 35 / 44 resource overloads and relatively high signaling overloads.

[00141] In embodiments of the present application, in SSBs configured for a terminal device in a server cell, a PRACH resource is configured for all SSBs except the second SSB, such that, in the signaling that carries a first message, a bit can be used to distinguish between a second resource associated with the second SSB and a first resource associated with a first SSB.

[00142] In other words, a PRACH resource is configured for all additional TRPs of a server cell, and this PRACH resource is used only for one active additional TRP. Thus, in the signaling that carries the first message, for example, in a PDCCH order, a bit can be used to indicate whether a PRACH resource corresponding to a service TRP or a PRACH resource corresponding to an active additional TRP is specified in the PDCCH order.

[00143] According to this method, the number of PRACH resources configured for the additional TRPs can be reduced from a maximum of seven to one, and the signaling in the PDCCH order is also reduced from three bits to one bit, which reduces the amount of resources and signaling overhead indicating the resources.

[00144] The method embodiments of this application are described above in detail with reference to Figures 1 through 4. The apparatus embodiments of this application are described below in detail with reference to Figures 5 through 7. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments and, therefore, for parts that are not described in detail, Petition 870250083218, dated 16 / 09 / 2025, page 42 / 115 36 / 44 refers to the modalities of the previous method.

[00145] Figure 5 is a schematic diagram of a terminal device structure according to one embodiment of this application. The terminal device 500 shown in Figure 5 may include a receiving unit 510.

[00146] The 510 receiving unit is configured to receive the first information transmitted by a network device, where the first information is used to indicate a first resource, and the first resource is associated with a first SSB synchronization signal block.

[00147] Optionally, the first SSB is configured in an existing service cell of the terminal device, and the first SSB includes all SSBs in the service cell except for a second SSB.

[00148] Optionally, the second SSB is a CD-SSB synchronization signal block broadcast in a portion of the initial BWP carrier bandwidth of the server cell.

[00149] Optionally, the first information is additionally used to indicate a second resource, and the second resource is associated with the second SSB.

[00150] Optionally, the first resource and the second resource are random access radio resources.

[00151] Optionally, the first resource and the second resource are used for uplink synchronization of the terminal device in the server cell.

[00152] Optionally, the first resource is used for uplink synchronization between the terminal device and a TRP that transmits the first SSB in the server cell. Petition 870250083218, dated 09 / 16 / 2025, page 43 / 115 37 / 44

[00153] Optionally, the second resource is used for uplink synchronization between the terminal device and a TRP that transmits the second SSB in the server cell.

[00154] Optionally, the first bit of information is given.

[00155] Optionally, the first information is transported in a physical downlink control channel order (PDCCH).

[00156] Figure 6 is a schematic structural diagram of a network device, according to an embodiment of this application. A network device 600 shown in Figure 6 includes a transmission unit 610.

[00157] The 610 transmission unit is configured to transmit first information to a terminal device, where the first information is used to indicate a first resource, and the first resource is associated with a first SSB synchronization signal block.

[00158] Optionally, the first SSB is configured in an existing service cell for the terminal device, and the first SSB includes all SSBs in the service cell except for a second SSB.

[00159] Optionally, the second SSB is a CD-SSB synchronization signal block broadcast in a portion of the initial carrier bandwidth BWP of the server cell.

[00160] Optionally, the first information is additionally used to indicate a second resource, and the second resource is associated with the second SSB.

[00161] Optionally, the first resource and the second resource are random access radio resources. Petition 870250083218, dated 09 / 16 / 2025, page 44 / 115 38 / 44

[00162] Optionally, the first resource and the second resource are used for uplink synchronization from the terminal device to the server cell.

[00163] Optionally, the first resource is used for uplink synchronization between the terminal device and a TRP that transmits the first SSB in the service cell.

[00164] Optionally, the second resource is used for uplink synchronization between the terminal device and a TRP that transmits the second SSB in the server cell.

[00165] Optionally, the first bit of information is given.

[00166] Optionally, the first information is transported in a physical downlink control channel order (PDCCH).

[00167] Figure 7 is a schematic diagram of a communication device structure according to an embodiment of the application. Dashed lines in Figure 7 indicate that a unit or module is optional. Device 700 can be configured to implement the methods described in the previous method embodiments. Device 700 can be a chip, a terminal device, or a network device.

[00168] The 700 device may include one or more 710 processors. The 710 processor may provide support to the 700 device for implementing the methods described in the method embodiments above. The 710 processor may be a general-purpose processor or a dedicated processor. For example, the processor may be a central processing unit (CPU). Petition 870250083218, dated 09 / 16 / 2025, page 45 / 115 39 / 44 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 other programmable logic device, a discrete gate logic device or transistor, a discrete hardware component, or similar. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor or similar.

[00169] The 700 device may additionally include one or more 720 memories. The 1820 memory stores a program that can be executed by the 710 processor to cause the 710 processor to execute the methods described in the embodiments of the method above. The 720 memory may be independent of the 710 processor or may be integrated into the 710 processor.

[00170] Device 700 may additionally include a transceiver 730. Processor 710 may communicate with another device or chip via transceiver 730. For example, processor 710 may transmit data to and receive data from another device or chip via transceiver 730.

[00171] One embodiment of this application additionally provides a computer-readable storage medium for storing a program. The computer-readable storage medium may be applied to a terminal or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal or network device in the various embodiments of this application. Petition 870250083218, dated 09 / 16 / 2025, page 46 / 115 40 / 44

[00172] One embodiment of this application additionally provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal or network device in the various embodiments of this application.

[00173] One embodiment of this application additionally provides a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in the embodiments of this application.

[00174] It should be understood that the terms system and network in this application may be used interchangeably. Furthermore, the terms used in this application are used only to illustrate specific embodiments of this application, but are not intended to limit the present application. The terms first, second, third, fourth and similar terms in the descriptive report, claims and drawings of this application are used to distinguish between different objects, rather than to describe a specific order. In addition, the terms include and have and any variations thereof are intended to cover a non-exclusive inclusion.

[00175] In the modalities of this application, the indication mentioned in this document may refer to a direct indication, or it may refer to an indirect indication, or it may mean that there is an association relationship. Petition 870250083218, dated 09 / 16 / 2025, p. 47 / 115 41 / 44 For example, A indicates B, which may mean that A directly indicates B, for example, B can be obtained through A; or it may mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or it may mean that there is an associative relationship between A and B.

[00176] In the modalities of this application, B corresponding to A means that B is associated with A, and B can be determined based on A. However, it should be further understood that determining B based on A does not mean determining B based solely on A, but rather, B can be determined based on A and / or other information.

[00177] In the modalities of this application, the term correspond may mean that there is a direct or indirect correspondence between the two, or it may mean that there is an associative relationship between the two, or it may mean that there is a relationship such as indicating and being indicated, or configuring and being configured.

[00178] In embodiments of this application, predefinition and preconfiguration may be implemented by pre-storing a corresponding code or table in a device (for example, including the terminal device and the network access device) or in other ways that may be used to indicate related information, and a specific implementation thereof is not limited in the present application. For example, being predefined may refer to being defined in a protocol.

[00179] In the modalities of this request, the protocol may refer to a standard protocol in the field of communications and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied to a future Petition 870250083218, dated 09 / 16 / 2025, p. 48 / 115 42 / 44 communications system, which is not limited in this application.

[00180] In the modalities of this request, the term and / or is merely an association relation that describes associated objects, and represents that there can be three types of relationships. For example, A and / or B can represent three cases: only A exists, both A and B exist, and only B exists. Furthermore, the / character in the descriptive report generally indicates an or relationship between the associated objects.

[00181] In the modalities of this application, the sequence numbers of the processes mentioned do not signify execution sequences. The execution sequences of the processes should be determined according to the functions and internal logic of the processes, and should not be interpreted as any limitation on the implementation processes of the modalities of this application.

[00182] In the various embodiments provided in this application, it should be understood that the disclosed system, apparatus, and method may be implemented in another manner. For example, the apparatus embodiments described are merely examples. For instance, the division of units is merely a logical function division, and there may be another division in the actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Furthermore, the mutual couplings or direct couplings or communication connections exhibited or discussed may be implemented as indirect couplings or communication connections through some interfaces, apparatus, or units, and may be implemented in electronic forms. Petition 870250083218, dated 09 / 16 / 2025, page 49 / 115 43 / 44 mechanical or other.

[00183] The units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, and may be located in a single position or may be distributed across a plurality of network units. Some or all of the units may be selected according to the actual needs to achieve the objective of the modal solutions.

[00184] In addition, functional units in the forms of this application may be integrated into a processing unit, or each of the units may exist physically separately, or two or more units may be integrated into a unit.

[00185] All or some of the foregoing embodiments may be implemented using software, hardware, firmware, or any combination thereof. When software is used to implement embodiments, the foregoing embodiments may be implemented wholly or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of this application are generated wholly or partially. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable device. The computer instructions may be stored on a computer-readable storage medium or transmitted from a computer-readable storage medium to another storage medium. Petition 870250083218, dated 09 / 16 / 2025, page 50 / 115 44 / 44 Computer-readable storage. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (e.g., a coaxial cable, a fiber optic cable, and a digital subscriber line (DSL)) or in a wireless manner (e.g., infrared, wireless, and microwave). Computer-readable storage media can be any usable, computer-readable media, or a data storage device, such as a server or data center, integrating one or more usable media. Usable media can be magnetic media (e.g., a floppy disk, a hard disk, or magnetic tape), optical media (e.g., a digital video disc (DVD)), semiconductor media (e.g., a solid-state drive (SSD)), or similar.

[00186] The descriptions above are merely specific implementations of this application, but the scope of protection of this application is not limited to this. Any variation or substitution readily devised by a person skilled in the art within the scope of the art disclosed in this application shall fall within the scope of protection of this application. Therefore, the scope of protection of this application will be subject to the scope of protection of the claims. Petition 870250083218, dated 09 / 16 / 2025, page 51 / 115

Claims

1 / 2 CLAIMS 1. TERMINAL DEVICE characterized by comprising: a receiving unit, configured to receive first information transmitted by a network device, wherein the first information is used to indicate a first resource, and the first resource is associated with a first block of SSB synchronization signal.

2. TERMINAL DEVICE, according to claim 1, characterized in that the first SSB is configured in an existing service cell of the terminal device, and the first SSB comprises all SSBs in the service cell except for a second SSB.

3. TERMINAL DEVICE, according to claim 2, characterized in that the second SSB is a CDSSB cell-defining synchronization signal block diffusion in a portion of the initial carrier bandwidth (BWP) of the serving cell.

4. TERMINAL DEVICE, according to any one of claims 1 to 3, characterized in that the first pieces of information are one bit.

5. TERMINAL DEVICE, according to any one of claims 1 to 4, characterized in that the first information is transported in a physical downlink control channel (PDCCH) order.

6. NETWORK DEVICE characterized by comprising: a transmission unit, configured to transmit initial information to a terminal device, wherein the initial information is used to indicate a first resource, and the first resource is associated with a first block of SSB synchronization signal.

7. NETWORK DEVICE, according to claim 6, characterized in that the first SSB is configured in an existing service cell of the terminal device, and the first SSB comprises all SSBs in the service cell except for a second SSB.

8. NETWORK DEVICE, according to claim 7, characterized in that the second SSB is a CDSSB cell-defining synchronization signal block broadcast in a portion of the initial carrier bandwidth (BWP) of the server cell.

9. NETWORK DEVICE, according to any one of claims 6 to 8, characterized in that the first pieces of information are one bit.

10. NETWORK DEVICE, according to any one of claims 6 to 9, characterized in that the first information is transported in a physical downlink control channel (PDCCH) order. Petition 870250083218, dated 09 / 16 / 2025, p. 53 / 115

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