Method and apparatus for a node used in wireless communication

Abstract

The present invention provides a method and apparatus for a node used in wireless communication. The first node used in wireless communication is a first receiver that receives a first signaling, the first signaling being used to determine a plurality of physical random access channel occasion groups, each physical random access channel occasion group of the plurality of physical random access channel occasion groups includes a first receiver containing a plurality of physical random access channel occasions, and a second receiver that receives a second signaling, the second signaling being used to indicate the value of a first index, the value of the first index corresponding to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups, and the second receiver.

Description

Technical Field

[0001] This application relates to the technical field of communications, and more specifically, to a method and an apparatus for a node used in wireless communications.

Background Art

[0002] In order to improve the coverage performance of a physical random access channel (PRACH), some communication systems (for example, a new radio (NR) system) plan to introduce a solution for multiple PRACH transmissions. In the solution for multiple PRACH transmissions, multiple PRACHs can be transmitted on a physical random access channel occasion group (ROG). In this case, how to determine the ROG corresponding to multiple PRACH transmissions is an issue to be solved.

Summary of the Invention

Problems to be Solved by the Invention

[0003] [[ID=2I]] Embodiments of this application provide a method and an apparatus for a node used in wireless communications. Various aspects related to this application are described below.

Means for Solving the Problems

[0004] According to the first embodiment, a first node for wireless communication is provided, the first node being a first receiver that receives a first signaling, the first signaling being used to determine a plurality of physical random access channel occasion groups, each physical random access channel occasion group being a first receiver containing a plurality of physical random access channel occasions, and a second receiver that receives a second signaling, the second signaling being used to indicate a value of a first index, the value of the first index being a second receiver corresponding to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0005] In one embodiment, the aforementioned first node includes a first emitter that transmits multiple physical random access channels on a target physical random access channel occasion group, and the aforementioned target physical random access channel occasion group is one of the aforementioned at least one physical random access channel occasion group corresponding to the value of the aforementioned first index.

[0006] In one embodiment, the aforementioned first node includes a first emitter that transmits multiple physical random access channels on a target physical random access channel occasion group, wherein the aforementioned target physical random access channel occasion group is a physical random access channel occasion group other than at least one physical random access channel occasion group corresponding to the value of the aforementioned first index in the aforementioned multiple physical random access channel occasion groups determined by the aforementioned first signaling.

[0007] In one embodiment, the value of the aforementioned first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0008] In one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the aforementioned plurality of physical random access channel occasion group subsets is permitted to be used for transmission of multiple physical random access channels.

[0009] In one embodiment, at least one physical random access channel occasion group included in at least one of the aforementioned subsets of physical random access channel occasion groups is prohibited from being used for transmission across multiple physical random access channels.

[0010] In one embodiment, the third signaling is used to establish a correspondence between the aforementioned non-negative integers and the aforementioned subsets of physical random access channel occasion groups.

[0011] In one embodiment, the aforementioned at least one physical random access channel occasion group corresponding to the value of the aforementioned first index is associated with the same synchronization signal / physical broadcast channel block index.

[0012] In one embodiment, the value of the aforementioned first index corresponds to a first physical random access channel occasion group index, and the aforementioned first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the aforementioned multiple physical random access channel occasion groups.

[0013] In one embodiment, the value of the first index mentioned above corresponds to the first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the aforementioned multiple physical random access channel occasion groups is equal to the first number of occasions mentioned above.

[0014] In one embodiment, the value of the aforementioned first index corresponds to a first physical random access channel occasion index, and the aforementioned first physical random access channel occasion index is used to determine the first physical random access channel occasion from multiple physical random access channel occasions included in the aforementioned multiple physical random access channel occasion groups, and each physical random access channel occasion included in the aforementioned multiple physical random access channel occasion groups belongs to one of the aforementioned multiple physical random access channel occasion groups.

[0015] In one embodiment, the aforementioned second signaling includes a plurality of indicator fields, at least one of which is used to indicate the value of the aforementioned first index.

[0016] In one embodiment, the aforementioned plurality of indicator fields include at least two of the uplink / supplementary uplink indicator field, synchronization signal / physical broadcast channel block index field, first index field, and reserved bit field, wherein the aforementioned first index field is used to indicate at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups, or the aforementioned synchronization signal / physical broadcast channel block index field and the aforementioned first index field are used together to indicate at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups.

[0017] According to a second embodiment, a second node for wireless communication is provided, comprising a first emitter that transmits a first signaling, wherein the first signaling is used to determine a plurality of physical random access channel occasion groups, and each physical random access channel occasion group of the plurality of physical random access channel occasion groups comprises a first emitter containing a plurality of physical random access channel occasions, and a second emitter that transmits a second signaling, wherein the second signaling is used to indicate a value of a first index, and the value of the first index corresponds to a second emitter corresponding to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0018] In one embodiment, the aforementioned second node includes a first receiver that receives a plurality of physical random access channels, the plurality of physical random access channels transmitted in a target physical random access channel occasion group, the aforementioned target physical random access channel occasion group is one of the aforementioned at least one physical random access channel occasion group corresponding to the value of the aforementioned first index.

[0019] In one embodiment, the aforementioned second node includes a first receiver that receives a plurality of physical random access channels, the plurality of physical random access channels transmitted in a target physical random access channel occasion group, the aforementioned target physical random access channel occasion group is a physical random access channel occasion group other than at least one physical random access channel occasion group that corresponds to the value of the aforementioned first index in the plurality of physical random access channel occasion groups determined by the aforementioned first signaling.

[0020] In one embodiment, the value of the aforementioned first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0021] In one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the aforementioned plurality of physical random access channel occasion group subsets is permitted to be used for transmission of multiple physical random access channels.

[0022] In one embodiment, at least one physical random access channel occasion group included in at least one of the aforementioned subsets of physical random access channel occasion groups is prohibited from being used for transmission across multiple physical random access channels.

[0023] In one embodiment, the third signaling is used to configure the correspondence between the plurality of non-negative integers described above and the subset of the plurality of physical random access channel occasion groups described above.

[0024] In one embodiment, the at least one physical random access channel occasion group corresponding to the value of the first index described above is associated with the same synchronization signal / physical broadcast channel block index.

[0025] In one embodiment, the value of the first index described above corresponds to a first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the plurality of physical random access channel occasion groups described above.

[0026] In one embodiment, the value of the first index described above corresponds to a first occasion number, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups described above is equal to the first occasion number.

[0027] In one embodiment, the value of the first index described above corresponds to a first physical random access channel occasion index, and the first physical random access channel occasion index is used to determine the first physical random access channel occasion from the plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups described above, and each physical random access channel occasion of the plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups described above belongs to one of the plurality of physical random access channel occasion groups described above.

[0028] In one embodiment, the foregoing second signaling includes a plurality of indication fields, and at least one of the plurality of indication fields is used to indicate the value of the foregoing first index.

[0029] In one embodiment, the plurality of indication fields includes at least two of an uplink / supplementary uplink indication field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field. The first index field is used to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are jointly used to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0030] According to a third aspect, a method for a first node used in wireless communication is provided, including receiving first signaling, where the first signaling is used to determine a plurality of physical random access channel occasion groups, and each physical random access channel occasion group in the plurality of physical random access channel occasion groups includes a plurality of physical random access channel occasions, and receiving second signaling, where the second signaling is used to indicate the value of a first index, and the value of the first index corresponds to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0031] In one embodiment, the method described above further includes the step of transmitting multiple physical random access channels in a target physical random access channel occasion group, wherein the target physical random access channel occasion group is one of the aforementioned at least one physical random access channel occasion group corresponding to the value of the first index described above.

[0032] In one embodiment, the method described above further includes the step of transmitting a plurality of physical random access channels on a target physical random access channel occasion group, wherein the target physical random access channel occasion group is a physical random access channel occasion group other than at least one physical random access channel occasion group corresponding to the value of the first index in the plurality of physical random access channel occasion groups determined by the first signaling described above.

[0033] In one embodiment, the value of the aforementioned first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0034] In one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the aforementioned plurality of physical random access channel occasion group subsets is permitted to be used for transmission of multiple physical random access channels.

[0035] In one embodiment, at least one physical random access channel occasion group included in at least one of the aforementioned subsets of physical random access channel occasion groups is prohibited from being used for transmission across multiple physical random access channels.

[0036] In one embodiment, the third signaling is used to establish a correspondence between the aforementioned non-negative integers and the aforementioned subsets of physical random access channel occasion groups.

[0037] In one embodiment, the aforementioned at least one physical random access channel occasion group corresponding to the value of the aforementioned first index is associated with the same synchronization signal / physical broadcast channel block index.

[0038] In one embodiment, the value of the aforementioned first index corresponds to a first physical random access channel occasion group index, and the aforementioned first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the aforementioned multiple physical random access channel occasion groups.

[0039] In one embodiment, the value of the first index mentioned above corresponds to the first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the aforementioned multiple physical random access channel occasion groups is equal to the first number of occasions mentioned above.

[0040] In one embodiment, the value of the aforementioned first index corresponds to a first physical random access channel occasion index, and the aforementioned first physical random access channel occasion index is used to determine the first physical random access channel occasion from multiple physical random access channel occasions included in the aforementioned multiple physical random access channel occasion groups, and any of the multiple physical random access channel occasions included in the aforementioned multiple physical random access channel occasion groups is one of the aforementioned multiple physical random access channel occasion groups.

[0041] In one embodiment, the aforementioned second signaling includes a plurality of indicator fields, at least one of which is used to indicate the value of the aforementioned first index.

[0042] In one embodiment, the aforementioned plurality of indicator fields include at least two of the uplink / supplementary uplink indicator field, synchronization signal / physical broadcast channel block index field, first index field, and reserved bit field, wherein the aforementioned first index field is used to indicate at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups, or the aforementioned synchronization signal / physical broadcast channel block index field and the aforementioned first index field are used together to indicate at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups.

[0043] According to a fourth aspect, a method is provided for use in wireless communication at a second node, comprising the steps of transmitting a first signaling, wherein the first signaling is used to determine a plurality of physical random access channel occasion groups, each of the plurality of physical random access channel occasion groups comprising a plurality of physical random access channel occasions; and transmitting a second signaling, wherein the second signaling is used to indicate a value of a first index, the value of the first index corresponding to at least one of the plurality of physical random access channel occasion groups.

[0044] In one embodiment, the method described above further includes the step of receiving a plurality of physical random access channels, wherein the plurality of physical random access channels are transmitted in a target physical random access channel occasion group, and the target physical random access channel occasion group is one of the aforementioned at least one physical random access channel occasion group corresponding to the value of the first index described above.

[0045] In one embodiment, the method described above further includes the step of receiving a plurality of physical random access channels, wherein the plurality of physical random access channels are transmitted in a target physical random access channel occasion group, the target physical random access channel occasion group is a physical random access channel occasion group other than at least one physical random access channel occasion group corresponding to the value of the first index in the plurality of physical random access channel occasion groups determined by the first signaling described above.

[0046] In one embodiment, the value of the aforementioned first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0047] In one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the aforementioned plurality of physical random access channel occasion group subsets is permitted to be used for transmission of multiple physical random access channels.

[0048] In one embodiment, at least one physical random access channel occasion group included in at least one of the aforementioned subsets of physical random access channel occasion groups is prohibited from being used for transmission across multiple physical random access channels.

[0049] In one embodiment, the third signaling is used to establish a correspondence between the aforementioned non-negative integers and the aforementioned subsets of physical random access channel occasion groups.

[0050] In one embodiment, the aforementioned at least one physical random access channel occasion group corresponding to the value of the aforementioned first index is associated with the same synchronization signal / physical broadcast channel block index.

[0051] In one embodiment, the value of the aforementioned first index corresponds to a first physical random access channel occasion group index, and the aforementioned first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the aforementioned multiple physical random access channel occasion groups.

[0052] In one embodiment, the value of the first index described above corresponds to the first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups is equal to the first number of occasions described above.

[0053] In one embodiment, the value of the aforementioned first index corresponds to a first physical random access channel occasion index, and the aforementioned first physical random access channel occasion index is used to determine the first physical random access channel occasion from multiple physical random access channel occasions included in the aforementioned multiple physical random access channel occasion groups, and any of the multiple physical random access channel occasions included in the aforementioned multiple physical random access channel occasion groups is one of the aforementioned multiple physical random access channel occasion groups.

[0054] In one embodiment, the aforementioned second signaling includes a plurality of indicator fields, at least one of which is used to indicate the value of the aforementioned first index.

[0055] In one embodiment, the aforementioned plurality of indicator fields include at least two of the uplink / supplementary uplink indicator field, synchronization signal / physical broadcast channel block index field, first index field, and reserved bit field, wherein the aforementioned first index field is used to indicate at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups, or the aforementioned synchronization signal / physical broadcast channel block index field and the aforementioned first index field are used together to indicate at least one physical random access channel occasion group in the aforementioned plurality of physical random access channel occasion groups.

[0056] According to the fifth aspect, a first node is provided which includes a transceiver, memory and a processor, wherein the memory is used to store a program, and the processor calls the program in the memory and controls the transceiver to send and receive signals, thereby causing the first node to perform the method described in any of the embodiments of the third aspect.

[0057] According to the sixth aspect, a second node is provided which includes a transceiver, memory and a processor, wherein the memory is used to store a program, and the processor calls the program in the memory and controls the transceiver to send and receive signals, thereby causing the second node to perform the method described in any of the embodiments of the fourth aspect.

[0058] According to the seventh aspect, an embodiment of the present application provides a communication system including the first and / or second nodes described above. In another possible design, the system may further include other devices that interact with the first or second node in the solution according to the embodiment of the present application.

[0059] According to the eighth aspect, an embodiment of the present application provides a computer-readable storage medium in which a computer program is stored that causes a computer to perform some or all of the steps of the methods of each of the above aspects.

[0060] According to the ninth aspect, embodiments of the present application provide a computer program product comprising a non-temporary computer-readable storage medium storing an operable computer program to cause a computer to perform some or all of the steps of the methods of each of the above aspects. In some embodiments, this computer program product may be a single software installation package.

[0061] According to the tenth aspect, an embodiment of the present application includes a memory and a processor, the processor being capable of calling and executing a computer program from the memory, thereby providing a chip that realizes some or all of the steps described in the manner of each of the above aspects. [Effects of the Invention]

[0062] If the first node corresponds to multiple physical random access channel occasion groups, an embodiment of the present invention can utilize a second signaling to indicate at least one physical random access channel occasion group among the multiple physical random access channel occasion groups, thereby allowing the first node to determine the physical random access channel occasion group corresponding to the multiple PRACH transmissions based on the instructions of the second signaling. [Brief explanation of the drawing]

[0063] [Figure 1] This figure shows an example of a system architecture for a wireless communication system that may be applied to embodiments of the present invention. [Figure 2] This is a flowchart of a method for a first node used in wireless communication according to one embodiment of the present invention. [Figure 3] This is a flowchart of a method for a first node used in wireless communication according to another embodiment of the present invention. [Figure 4] This is an example of multiple PRACH transmissions colliding with other transmissions. [Figure 5] This is an example of an instruction corresponding to the PRACH mask index instruction field. [Figure 6] This is another example of an instruction corresponding to the PRACH mask index instruction field. [Figure 7] This is another example of an instruction corresponding to the PRACH mask index instruction field. [Figure 8] This is another example of an instruction corresponding to the PRACH mask index instruction field. [Figure 9] This is another example of an instruction corresponding to the PRACH mask index instruction field. [Figure 10] This is another example of an instruction corresponding to the PRACH mask index instruction field. [Figure 11] This is a flowchart of the method at the second node used for wireless communication according to the embodiment of the present invention. [Figure 12] This is a schematic diagram of the structure of a node used for wireless communication according to one embodiment of the present invention. [Figure 13] This is a schematic diagram of the structure of a node used for wireless communication according to another embodiment of the present invention. [Figure 14] This is a schematic diagram of the apparatus according to an embodiment of the present invention. [Figure 15] This is a structural diagram of the hardware module of a communication device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0064] Communication system architecture Figure 1 shows an example of a system architecture of a wireless communication system 100 that may be applied to embodiments of the present application. This wireless communication system 100 may include a network device 110 and a user device 120. The network device 110 may be a device that communicates with the user device 120. The network device 110 can provide communication coverage to a specific geographic area and can communicate with the user device 120 located within this coverage area.

[0065] Figure 1 illustrates one network device and two user devices, and optionally, this wireless communication system 100 may include multiple network devices, and the coverage range of each network device may include other numbers of user devices, but the embodiments of the present application are not limited thereto.

[0066] The wireless communication system 100 may optionally further include other network entities such as a network controller and a mobility management entity, and the embodiments of the present application are not limited thereto.

[0067] It should be understood that the technical solution of the embodiment of this application can be applied not only to random access but also to beam failure recovery. Furthermore, the technical solution of the embodiment of this application can be applied not only to Type-1 random access procedures but also to Type-2 random access procedures. Furthermore, the technical solution of the embodiment of this application can be applied not only to Uu interfaces but also to PC5 interfaces. Furthermore, the technical solution of the embodiment of this application can be applied not only to single-carrier communication but also to multi-carrier communication. Furthermore, the technical solution of the embodiment of this application can be applied not only to multi-antenna communication but also to single-antenna communication. Furthermore, the technical solution of the embodiment of this application can be applied not only to user equipment and base station scenarios but also to vehicle-to-everything (V2X) scenarios, user equipment and relays, and relays and base stations, and similar technical effects can be obtained as in the user equipment and base station scenario. Furthermore, the technical solutions of the embodiments of this application can be applied to various communication scenarios, such as Enhanced Mobile Broadband (eMBB) scenarios, Ultra Reliable & Low Latency Communication (URLLC) scenarios, and Massive Machine Type Communication (mMTC) scenarios. Additionally, using a unified solution across different scenarios contributes to reducing hardware complexity and cost.

[0068] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as 5th generation (5G) systems, new radio (NR), long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, and LTE time division duplex (TDD) systems. The technical solutions of this application can also be applied to future communication systems such as 6th generation mobile communication systems and satellite communication systems.

[0069] User equipment in the embodiments of the present application may also be called terminal equipment, access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. User equipment in the embodiments of the present application may also refer to devices that provide voice and / or data connectivity to a user, and can be used to connect people, objects and machines, such as handheld devices and in-vehicle devices with wireless connectivity. The user devices in the embodiments of this application may include mobile phones, tablet PCs (Pads), laptop computers, palmtop computers, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. Optionally, the UE can function as a base station. For example, the UE can function as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. Communication between a cellular phone and smart home devices does not require relaying communication signals by a base station.

[0070] The network equipment in the embodiments of the present application may be equipment for communicating with user equipment, and this network equipment may also be called access network equipment or wireless access network equipment, and for example, the network equipment may be a base station. The network equipment in the embodiments of the present application may also refer to a radio access network (RAN) node (or equipment) that provides user equipment to a wireless network. The term "base station" broadly covers, or may be replaced by, various names such as NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), main base station (MeNB), secondary base station (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, radio node, access point (AP), transmission node, transmit / receive node, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), and positioning node. A base station may also be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station may further refer to a communication module, modem, or chip installed within the equipment or device mentioned in the preceding paragraph.A base station may also be a mobile switching center and equipment that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side equipment in a 6G network, or equipment that performs base station functions in future communication systems. A base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technologies used in network equipment or the specific forms of equipment.

[0071] Base stations may be fixed or mobile. For example, a helicopter or drone may be configured as a mobile base station, and one or more cells may move depending on the location of this mobile base station. In another example, a helicopter or drone may be configured as equipment for communicating with another base station.

[0072] In some applications, the network equipment in the embodiments of the present application refers to a CU or DU, or the network equipment may include both a CU and a DU. The gNB may further include an AAU.

[0073] Network equipment and user equipment may be configured on land, whether indoors or outdoors, handheld or vehicle-mounted, on water, or even in the air on an airplane, balloon, or satellite. The embodiments of this application do not limit the scenarios in which the network equipment and user equipment are located.

[0074] It should be understood that all or some of the functions of the communication equipment in this application may be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0075] Starting the random access process The random access process is one of the fundamental processes in communication systems, and it can ensure that user equipment can quickly connect to network equipment (e.g., base stations) when it needs to enter or reconnect to a cell.

[0076] A random access process may include multiple types; for example, a random access process may include a competition-based random access process and a non-competition-based random access process. Furthermore, a random access process may include a four-step random access process and a two-step random access process.

[0077] There are various ways to initiate a random access process, including, for example, a random access process initiated by a physical downlink control channel (PDCCH) order, a random access process initiated by a medium access control (MAC) entity, or a random access process initiated by a radio resource control (RRC) event. For a detailed explanation of how to initiate a random access process, please refer to the relevant explanation in 3GPP® TS38.321.

[0078] PDCCH order triggers are primarily used after uplink synchronization fails. When downlink data needs to be sent to network equipment, a PDCCH order can be used to force user equipment to initiate a random access process to complete uplink time synchronization. Alternatively, a PDCCH order trigger may be used to establish time alignment in a secondary timing advance group (STAG).

[0079] In some embodiments, a random access process initiated by a PDCCH order may include two types of processes: a competition-based random access process initiated by a PDCCH order, and a non-competition-based random access process initiated by a PDCCH order. For example, a random access process in a primary or secondary cell may be a competition-based random access process initiated by a PDCCH order. Alternatively, a random access process in a secondary cell may be a non-competition-based random access process initiated by a PDCCH order. This will be explained below with reference to Tables 1 and 2.

[0080] [Table 1] Table 1 shows the information the network instructs terminal devices via DCI format 1_0 in the case of a competition-based random access process initiated by a PDCCH order. As can be seen from Table 1, when a PDCCH order initiates a competition-based random access process, DCI format 1_0 does not specify any random access resources (e.g., random access preamble, ROG, etc.), and the user device randomly selects a random access resource. In this case, the random access process is prone to conflicting with other uplink transmissions.

[0081] As one example, the cyclic redundancy check (CRC) in DCI format 1_0 is scrambled, for example, the CRC in DCI format 1_0 is scrambled by the cell radio network temporary identifier (C-RNTI).

[0082] [Table 2] Table 2 shows the information the network instructs terminal equipment via DCI format 1_0 in the case of a non-contradiction-based random access process initiated by a PDCCH order. As can be seen from Table 2, when a PDCCH order initiates a non-contradiction-based random access process, DCI format 1_0 can specify only the RO associated with a particular SS / PBCH block. In some cases, performing PRACH transmissions based on ROs may conflict with other uplink transmissions.

[0083] As one example, the CRC in DCI format 1_0 is scrambled, for example, by C-RNTI.

[0084] As one example, when a PDCCH order initiates a non-conflict-based random access process, the PRACH mask instruction field in DCI format 1_0 can specify only a particular RO associated with a given SS / PBCH block. See Table 3 for an example of the correspondence between the PRACH mask instruction field in DCI format 1_0 and an RO associated with a given SS / PBCH block.

[0085] [Table 3]

[0086] In the example in Table 3, it can be seen that there is a correspondence between the PRACH mask indicator field and the RO associated with a certain SS / PBCH block. Thus, when a user device receives DCI format 1_0, it can determine the corresponding RO based on the value indicated by the PRACH mask indicator field in DCI format 1_0. For example, if the user device receives a value of 0 indicated by the PRACH mask indicator field in DCI format 1_0, the user device can determine that all ROs can be used for PRACH transmission. Alternatively, if the user device receives a value of 3 indicated by the PRACH mask indicator field in DCI format 1_0, the user device can determine that the RO corresponding to RO index 3 can be used for PRACH transmission.

[0087] PRACH transmission coverage expansion The coverage performance of a communication system (e.g., an NR system) is an important factor that operators must consider when commercially deploying a communication network, because the coverage performance of a communication system directly impacts the service quality of the communication system and the operator's costs, such as capital expenditures (CAPEX) and operating expenses (OPEX).

[0088] The coverage performance of a communication system varies depending on the frequency band in which it operates. For example, compared to an LTE system, an NR system can operate in a higher frequency band (e.g., millimeter wave band). However, because NR systems experience greater path loss when operating in higher frequency bands, their coverage performance in those bands is relatively inferior. Therefore, as the frequency bands supported by communication systems increase, the challenge lies in how to expand the coverage of the communication system.

[0089] In most real-world deployment scenarios, the capabilities of user equipment are somewhat weaker than those of network equipment, making uplink (UL) coverage a bottleneck in expanding the coverage of the communication system. On the other hand, with the advancement of communication technology, uplink services such as video uploading services in certain emerging vertical use cases are gradually increasing, and in scenarios with many uplink services, how to expand uplink coverage has become an even greater challenge to address.

[0090] In related technologies, technical solutions for extending coverage for specific uplinks already exist. For example, in the 17th version of NR (release 17, Rel-17), coverage extensions are introduced for physical uplink shared channels (PUSCH), physical uplink control channels (PUCCH), and message 3 (Msg3) in random access procedures.

[0091] However, while Rel-17 does not design a means to extend coverage for PRACH, PRACH transmission performance is crucial in many procedures such as initial access and beam failure recovery, and therefore, extending PRACH coverage is also very important. Given this, 3GPP® has specified a work item (WI) for "further NR coverage enhancements" in the Rel-18 version of NR through the 3rd generation partnership project (3GPP®) RP-221858, and improving the coverage performance of PRACH transmission is one of the important issues under consideration in this work item.

[0092] In possible embodiments, coverage of PRACH transmissions can be extended using multiple PRACH transmissions. That is, coverage of PRACH transmissions can be extended by repeatedly transmitting PRACHs (for example, transmitting a preamble multiple times in a PRACH). In this application, multiple PRACH transmissions may be replaced with terms such as multi-PRACH transmission, multiple PRACH transmission, multi-PRACH transfer, repeated transmission of PRACHs, or Type-3 Random Access Procedure, and the embodiments of this application are not limited thereto. In other words, any multiple PRACH transmission referred to in this application may be replaced with at least one of multi-PRACH transmission, multiple PRACH transmission, multi-PRACH transfer, repeated transmission of PRACHs, or Type-3 Random Access Procedure.

[0093] In the embodiments of this application, the multiple PRACH transmissions may be multiple PRACH transmissions using the same beam or multiple PRACH transmissions using different beams. Taking multiple PRACH transmissions using the same beam as an example, the 3GPP® Radio Access Network (RAN) 1#110bis-e meeting has already agreed that PRACH occasions (also called RACH occasions) located in at least different time periods (also called time instances, time points, time examples, etc.) can be used for multiple PRACH transmissions using the same beam. Alternatively, a physical random access channel occasion (PRACH occasion group, ROG) can be used for multiple PRACH transmissions using the same beam.

[0094] Furthermore, the RAN1#110bis-e meeting defined the number of multiple PRACH transmissions using the same beam (number of PRACH transmissions / repetition factor), and this number may include at least 2, 4, and 8. That is, one ROG may include 2, 4, or 8 valid physical random access channel occasions (PRACH occasions, ROs). ROGs are described further below.

[0095] Physical Random Access Channel Occasion Group In some scenarios, an ROG is introduced to refer to a set containing multiple physical random access channel occasions (PRACH occasions, ROs), and therefore the ROG may be called an "RO set". The embodiments of this application do not limit the name of the ROG. For the sake of ease of explanation, the embodiments of this application will be described based on the ROG. The embodiments of this application do not limit the name of the physical random access channel occasions; for example, a physical random access channel occasion may be called a random access occasion, or a transmission occasion, etc. For the sake of ease of explanation, the embodiments of this application will be described based on the physical random access channel occasions, and the physical random access channel occasions and random access occasions mentioned in the embodiments of this application are interchangeable.

[0096] As one embodiment, ROG may be used for multiple PRACH transmissions using the same beam.

[0097] In one embodiment, the ROG may include ROs corresponding to multiple PRACHs transmitted using the same beam.

[0098] As one embodiment, several meetings (e.g., 3GPP® RAN1#110bis-e) have considered that ROs located in different time instances may be able to use multiple PRACH transmissions with the same beam. That is, multiple ROs within a single ROG may be located in different time instances.

[0099] As one embodiment, for a certain number of PRACH transmissions, one ROG contains an effective RO, and it is advantageous for a certain number of PRACH to be transmitted by the effective RO.

[0100] In one embodiment, all ROs in a single ROG can be associated with a single synchronization signal block (also called a synchronization signal / physical broadcast channel block, SS / PBCH block, or SSB), and for simplification, the synchronization signal block or synchronization signal / physical broadcast channel block will subsequently be abbreviated as SS / PBCH, which can be optionally replaced with SS / PBCH block or SSB. Naturally, in the embodiments of this application, a single ROG can be associated with multiple SS / PBCHs.

[0101] As can be seen from the above, in the solution for multiple PRACH transmissions, multiple PRACHs can be transmitted by an ROG. In this case, the challenge to be solved is how to determine which ROG will handle multiple PRACH transmissions. For example, how to determine which ROG or several ROGs will be used for multiple PRACH transmissions. Also, in order to avoid collisions with other transmissions, how to determine which ROG or several ROGs cannot be used for multiple PRACH transmissions.

[0102] To address the above issues, the present invention provides a method and apparatus for a node used in wireless communication, wherein when the first node corresponds to multiple ROGs, an embodiment of the present invention can use a second signaling to indicate at least one ROG among the multiple ROGs, thereby allowing the first node to decide to transmit the ROG corresponding to multiple PRACHs based on the instructions of the second signaling.

[0103] This invention can be applied to multiple PRACH transmission scenarios, that is, it can achieve PRACH coverage expansion using repeated transmission of multiple PRACHs.

[0104] This invention can be applied to various random access processes. As one embodiment, the invention can be applied to a 4-step random access process. As another embodiment, the invention can be applied to a 2-step random access process. As one embodiment, the invention can be applied to a competition-based random access process. As yet another embodiment, the invention can be applied to a non-competition-based random access process.

[0105] This invention can be applied to random access processes initiated by different triggering mechanisms. As one embodiment, the invention can be applied to a random access process initiated by a PDCCH order. As another embodiment, the invention can be applied to a random access process initiated by a MAC entity. As yet another embodiment, the invention can be applied to a random access process initiated by an RRC event.

[0106] As one embodiment, the multiple PRACH transmissions referred to in this application may be multiple PRACH transmissions using the same beam, and the signal-to-noise ratio (SNR) gain is obtained by repeatedly transmitting multiple PRACHs with the same beam.

[0107] As one embodiment, the multiple PRACH transmissions referred to in this application may be multiple PRACH transmissions using different beams, and diversity gain is obtained by repeatedly transmitting multiple PRACHs with different beams.

[0108] The methods and apparatus of the present application will be described below with reference to several embodiments or examples. It should be understood that, where there is no contradiction, the embodiments and features of the embodiments in the first node of the present application can be applied to the second node, and vice versa. Where there is no contradiction, the embodiments and features of the embodiments of the present application can be combined in any way.

[0109] Figure 2 is a flowchart of a method in a node used for wireless communication according to one embodiment of the present invention. The method shown in Figure 2 may be performed by a first node. The first node will be briefly described below.

[0110] As one embodiment, the first node may be any type of node capable of performing multiple PRACH transmissions in the ROG of the communication system.

[0111] In one embodiment, the first node may be a user device; for example, the first node may be the user device 120 shown in Figure 1.

[0112] As one embodiment, the first node may be a network-controlled repeater (NCR).

[0113] In one embodiment, the first node may be a relay, for example, a relay terminal.

[0114] In one embodiment, the first node may include one or more receivers. For example, the first node may include one receiver, which can receive multiple signalings or data. Alternatively, the first node may include multiple receivers, each of which can receive different signalings or data.

[0115] As one sub-embodiment of the above embodiment, the first node may include a first receiver and a second receiver.

[0116] In one embodiment, the first node may further include an emitter. For example, the first node may further include a first emitter.

[0117] The method shown in Figure 2 will be described below. Referring to Figure 2, the method shown in Figure 2 may include steps S210 and S220.

[0118] In step S210, the first signaling is received.

[0119] In one embodiment, the first signaling is used to determine multiple ROGs. In other words, the first signaling is used to construct multiple ROGs.

[0120] As one embodiment, multiple ROGs determined by the first signaling may be used by the first node to perform multiple PRACH transmissions.

[0121] As one embodiment, any ROG in multiple ROGs includes multiple ROs.

[0122] As one embodiment, multiple ROs included in any one of the ROGs in a group of ROGs may be used to perform multiple PRACH transmissions. In other words, multiple PRACH transmissions may be performed by multiple ROs included in any one of the ROGs in a group of ROGs.

[0123] In one embodiment, multiple PRACH transmissions correspond to a single random access attempt (PRACH attempt).

[0124] As one example, multiple PRACH transmissions are used in a single random access attempt.

[0125] As one embodiment, multiple PRACH transmissions include each sending multiple random access preambles in a single random access attempt.

[0126] As one embodiment, multiple ROs included in any one of the ROGs may be used to transmit multiple random access preambles. In other words, multiple random access preambles may each be transmitted by multiple ROs.

[0127] In one embodiment, the first signaling is received by the first node via the first receiver.

[0128] In one embodiment, the first signaling is transmitted from the second node to the first node.

[0129] In one embodiment, the second node may be a network device. However, the embodiments of the present application are not limited thereto, and for example, the first signaling may be transmitted from a node other than the second node.

[0130] As one example, the first signaling is a higher-level signaling or a higher-level signaling.

[0131] As one example, the first signaling is RRC layer signaling.

[0132] As one example, the first signaling is MAC layer signaling.

[0133] In step S220, the second signaling is received.

[0134] In one embodiment, the second signaling is used to indicate the value of the first index. The value of the first index corresponds to at least one ROG in a group of ROGs. In other words, the value of the first index corresponds to one or more ROGs in a group of ROGs.

[0135] The embodiments of this application do not specifically limit embodiments in which the second signaling indicates the value of the first index. Embodiments in which the second signaling indicates the value of the first index will be introduced later with reference to specific embodiments, and for the sake of simplification, the description is omitted here.

[0136] In one embodiment, at least one ROG corresponding to the value of the first index may be used by the first node to perform multiple PRACH transmissions. That is, the second signaling may be used to indicate the ROG used by the first node for multiple PRACH transmissions.

[0137] In one embodiment, at least one ROG corresponding to the value of the first index may be forbidden from being used by the first node to perform multiple PRACH transmissions. That is, the second signaling may be used to indicate to the first node that the ROG is forbidden from being used for multiple PRACH transmissions. It should be understood that in some embodiments, the statement that at least one ROG corresponding to the value of the first index may be forbidden from being used by the first node to perform multiple PRACH transmissions may be replaced with at least one of the following: at least one ROG corresponding to the value of the first index may not be used by the first node to perform multiple PRACH transmissions, or the first node should avoid using at least one ROG corresponding to the value of the first index to perform multiple PRACH transmissions.

[0138] The embodiments of this application do not specifically limit the embodiments of the first index value. For the sake of simplicity, the embodiments of the first index value will be described illustratively later with reference to specific embodiments, and will not be described here.

[0139] In one embodiment, at least one ROG corresponding to the value of the first index is associated with the same SS / PBCH.

[0140] In one embodiment, at least one ROG corresponding to a value of the first index is associated with the same SS / PBCH index.

[0141] In one embodiment, the second signaling is received by the first node via the second receiver.

[0142] In one embodiment, the second signaling is transmitted from the second node to the first node.

[0143] In one embodiment, the second node may be a network device. However, the embodiments of the present application are not limited thereto, and for example, the first signaling may be transmitted from a node other than the second node.

[0144] In one embodiment, the node transmitting the second signaling and the node transmitting the first signaling may be the same node. For example, the first and second signaling may be transmitted from the same network device.

[0145] In one embodiment, the second signaling includes one downlink control information (DCI).

[0146] In one embodiment, the second signaling is a single DCI.

[0147] In one embodiment, the second signaling is delivered to DCI.

[0148] In one embodiment, if the second signaling includes one DCI, the embodiments of this application do not specifically limit the format of the DCI. For example, in one embodiment, the second signaling includes DCI format1_0. Naturally, this application is not limited thereto, and the second signaling may include DCIs of other formats.

[0149] As one example, the second signaling is DCI format 1_0.

[0150] In one embodiment, the second signaling is delivered to DCI format 1_0.

[0151] In one embodiment, the second signaling includes CRC.

[0152] As one example, the CRC in the second signaling is scrambled. For example, the CRC in the second signaling is scrambled by C-RNTI. In one embodiment, the second signaling includes one upper-layer signaling or an even higher-layer signaling.

[0153] In one embodiment, the second signaling includes one RRC layer signaling.

[0154] In one embodiment, the second signaling is a single RRC layer signaling.

[0155] In one embodiment, the second signaling is delivered to a single RRC layer signaling.

[0156] In one embodiment, the second signaling includes one MAC layer signaling.

[0157] As one example, the second signaling is a single MAC layer signaling.

[0158] In one embodiment, the second signaling is carried to a single MAC layer signaling.

[0159] In embodiments of the present invention, when multiple ROGs are configured in the first node, embodiments of the present invention can utilize a second signaling to indicate a value for the first index, the value for the first index indicating at least one ROG among the multiple ROGs, thereby advantageous for the first node to determine the ROG corresponding to multiple PRACH transmissions based on the indication of the second signaling.

[0160] As mentioned above, in some embodiments, at least one ROG corresponding to the value of the first index may be used by the first node to perform multiple PRACH transmissions, and in some embodiments, at least one ROG corresponding to the value of the first index may be prohibited from being used by the first node to perform multiple PRACH transmissions. This will be explained below with reference to two embodiments.

[0161] Example 1: At least one ROG corresponding to the value of the first index is used to perform multiple PRACH transmissions.

[0162] Figure 3 is a flowchart of a method in a node used for wireless communication according to another embodiment of the present invention. The method shown in Figure 3 may be performed by a first node. For a description of the first node, please refer to the preamble, and the explanation will be omitted here. The method shown in Figure 3 may include steps S310 to S330.

[0163] In step S310, a first signaling is received. The first signaling may be used to determine multiple ROGs.

[0164] In step S320, a second signaling is received. The second signaling may be used to indicate the value of the first index, which corresponds to at least one ROG among multiple ROGs.

[0165] For a detailed explanation of steps S310 and S320, please refer to the explanations of steps S210 and S220 mentioned above. For simplicity, the explanation will be omitted here.

[0166] In step S330, multiple PRACH messages are sent to the target ROG.

[0167] In one embodiment, the target ROG is one of at least one ROG corresponding to the value of the first index. Thus, embodiments of the present invention can accurately represent ROGs used in multiple PRACH transmissions, or in other words, embodiments of the present invention can accurately represent multiple ROs used in multiple PRACH transmissions, thereby being better applicable to multiple PRACH transmission scenarios.

[0168] In one embodiment, at least one ROG corresponding to the value of the first index is permitted to be used for multiple PRACH transmissions. In one specific embodiment, the multiple ROGs determined by the first signaling include a first ROG, a second ROG, and a third ROG, where at least one ROG corresponding to the value of the first index is the first ROG, and the first ROG may be permitted to be used for multiple PRACH transmissions. In other words, the first ROG may be used by the first node for the current multiple PRACH transmissions. Thus, the first node can determine the ROG or multiple ROs corresponding to multiple PRACH transmissions based on the second signaling (the value of the first index), which is advantageous in avoiding the problem of uplink transmission collisions caused by using other ROGs to perform multiple PRACH transmissions.

[0169] In one embodiment, multiple PRACH transmissions are initiated by a single PDCCH order.

[0170] In one embodiment, multiple PRACH transmissions are initiated by a higher layer. For example, multiple PRACH transmissions are initiated by an RRC layer event, or multiple PRACH transmissions are initiated by a MAC entity.

[0171] Example 2: At least one ROG corresponding to the value of the first index is prohibited in order to perform multiple PRACH transmissions. As one embodiment, the first node can perform multiple PRACH transmissions using any one or more of the multiple ROGs determined by the first signaling; in other words, the first node can perform multiple PRACH transmissions by randomly selecting one or more ROGs from the multiple ROGs determined by the first signaling. However, there are a relatively large number of uplink transmission (UL transmissions) types, and collisions often occur between multiple types of uplink transmissions. Also, it is thought that sidelink transmissions and uplink transmissions can be transmitted using the same resources (e.g., frequency domain resources, time domain resources, etc.), and therefore collisions may occur between uplink transmissions and sidelink transmissions. Therefore, when performing multiple PRACH transmissions by randomly selecting one or more ROGs from multiple ROGs, it may increase the probability of collisions occurring between multiple types of uplink transmissions, or increase the probability of collisions occurring between uplink transmissions and sidelink transmissions.

[0172] To facilitate understanding, before introducing the solution in Example 2, we will first describe in detail the circumstances under which collisions occur between multiple types of uplink transmissions.

[0173] The uplink transmission type may include multiple types, for example, one or more of the following transmissions: PRACH transmission (e.g., single PRACH transmission, multiple PRACH transmission), PUSCH transmission, PUCCH transmission, and sounding reference signal (SRS) transmission.

[0174] In many cases, collisions can occur between multiple types of uplink transmissions. For example, collisions can occur when multiple types of uplink transmissions are repeated in the time domain. Also, for example, collisions can occur if the power allocated to multiple types of uplink transmissions by the user equipment in a single transmission occasion exceeds the user equipment's maximum transmit power value. Furthermore, collisions can occur due to power allocation exceeding limits due to dual connectivity, slot format determination, multiple types of uplink transmissions having transmission occasions in the same time domain resource location (same slot), and the gap between multiple types of uplink transmissions being too small. In this case, the user equipment must either abandon transmitting some of the uplink transmissions in the transmission occasion where the collision occurs, or reduce the transmit power of some of the uplink transmissions. For example, the user equipment must abandon transmitting PRACH in the transmission occasion where the collision occurs, or reduce the transmit power of PRACH.

[0175] Regarding solutions for multiple PRACH transmissions, it is necessary to transmit multiple PRACHs from multiple ROs. Therefore, when using multiple PRACH transmissions, the probability of collisions with other uplink or side transmissions is higher. This will be explained below with reference to Figure 4.

[0176] Figure 4 shows an example of multiple PRACH transmissions colliding with other transmissions (e.g., other uplink transmissions). As shown in Figure 4, multiple PRACH transmissions can be transmitted via multiple ROs (RO#0 to RO#7 in the figure), and collisions can occur at some ROs because they are repeated in the time domain with other uplink transmissions (other uplink transmission 1 in the figure), and collisions can occur at some ROs because the gap between them and other uplink transmissions (other uplink transmission 2 in the figure) is too small.

[0177] In general, a single random access trial occupies multiple PRACH transmissions, which include multiple ROs, and some ROGs in particular contain up to eight ROs. Therefore, multiple PRACH transmissions have a significantly increased probability of colliding with other uplink or side transmissions, and a single random access trial may collide with multiple other uplink or side transmissions.

[0178] In some cases, if ROG resources are comprised of network resources, frequent collisions between multiple PRACH transmissions and other uplink or side transmissions may cause the UE to abandon all or some of the PRACH transmissions. Thus, user equipment frequently needs to occupy extra ROG resources to retransmit PRACHs and re-execute random access. Therefore, multi-PRACH transmissions result in more serious system resource consumption than single-PRACH transmissions and cause increased access latency for user equipment.

[0179] In some cases, a network may assign the highest priority to multiple PRACH transmissions in a primary cell (PCell), while multiple PRACH transmissions in non-primary cells still face the risk of being abandoned or dropped. For example, multiple PRACH transmissions in primary secondary cells (PSCells) and other secondary cells (SCells) still face the risk of being abandoned or dropped.

[0180] In other words, in scenarios where multiple PRACHs are transmitted, one or more of the following issues may occur: multiple PRACH transmissions occupy multiple time slots; multiple PRACH transmissions have a higher probability of colliding with other transmissions, resulting in a greater impact on system performance; collisions between multiple PRACH transmissions can lead to increased random access delays; and poor performance of multiple PRACH transmissions can cause PRACH transmissions to become a bottleneck in the coverage range of the communication system.

[0181] To address the above issues, the embodiment of the present application provides the solution of Embodiment 2, thereby optimizing the means for resolving collisions between multiple PRACH transmissions and other transmissions, reducing the impact on system performance, improving the performance gain of multiple PRACH transmissions, increasing the coverage area, reducing random access delay, and improving the utilization efficiency of random access resources. The solution of Embodiment 2 will be described in detail below.

[0182] Referring again to Figure 3, in step S330, the first node sends multiple PRACHs on the target ROG. In one embodiment, the target ROG is one ROG other than at least one ROG corresponding to the value of the first index among the multiple ROGs determined by the first signaling. That is, the target ROG is determined from multiple ROGs determined by the first signaling, but the target ROG cannot be at least one ROG corresponding to the value of the first index.

[0183] In one embodiment, at least one ROG corresponding to the value of the first index is prohibited from being used for multiple PRACH transmissions. In one specific embodiment, the multiple ROGs determined by the first signaling include a first ROG, a second ROG, and a third ROG, where at least one ROG corresponding to the value of the first index is the first ROG, and the first ROG is prohibited (or can be replaced with avoidable or impossible) from being used for multiple PRACH transmissions. In other words, the first ROG cannot be used by the first node for the current multiple PRACH transmissions. In this way, the first node can determine, based on the second signaling (the value of the first index), which ROG or which ROG cannot transmit the multiple PRACH transmissions, which is advantageous in avoiding collisions between multiple PRACH transmissions and other transmissions (e.g., uplink transmissions, sidelink transmissions), and also reduces the probability of multiple PRACH transmissions colliding with other transmissions.

[0184] In one embodiment, multiple PRACH transmissions are initiated by a single PDCCH order.

[0185] In one example, multiple PRACH transmissions are initiated by higher layers. For instance, multiple PRACH transmissions are initiated by RRC layer events. Alternatively, multiple PRACH transmissions are initiated by MAC entities.

[0186] The first index and its value are explained in detail below.

[0187] In one embodiment, the first index is used to indicate an ROG or an RO contained within an ROG. For example, the first index may be used to indicate one or more ROGs, or it may be used to indicate multiple ROs contained within one or more ROGs.

[0188] As one example, the first index is the ROG mask index.

[0189] In one embodiment, the first index is the RO mask index.

[0190] In one embodiment, the first index is used to indicate the number of ROs. For example, the first index may be used to indicate the number of ROs included in one ROG, or it may be used to indicate the number of ROs used in multiple PRACH transmissions, or it may be used to indicate the number of ROs that are prohibited from being used in multiple PRACH transmissions.

[0191] In one embodiment, the value of the first index is one of several non-negative integers, and these several non-negative integers correspond one-to-one with several ROG subsets.

[0192] As one embodiment, any ROG subset in a plurality of ROG subsets includes at least one ROG in a plurality of ROGs. That is, any ROG subset in a plurality of ROG subsets includes at least one ROG in a plurality of ROGs determined by the first signaling.

[0193] As one embodiment, a subset of ROGs in a set of ROGs may include one ROG in a set of ROGs. For example, a set of ROGs may include a first ROG, a second ROG, and a third ROG, and a subset of ROGs in a set of ROGs may include only the first ROG.

[0194] As one embodiment, a subset of ROGs in a plurality of ROG subsets may include multiple ROGs in a plurality of ROGs. For example, multiple ROGs may include a first ROG, a second ROG, and a third ROG, and a subset of ROGs in a plurality of ROG subsets may include a first ROG and a second ROG.

[0195] In one example, the value of the first index corresponds to the first ROG subset. The first ROG subset is one of several ROG subsets.

[0196] As one embodiment, the first ROG subset includes only one ROG.

[0197] As one embodiment, the first ROG subset includes only the first ROG.

[0198] As one embodiment, the first ROG subset is the first ROG.

[0199] As one embodiment, the first ROG subset includes multiple ROGs. For example, it includes multiple ROGs in multiple ROGs determined by the first signaling.

[0200] As one embodiment, at least one ROG included in at least one ROG subset in multiple ROG subsets is permitted to be used for multiple PRACH transmissions.

[0201] As one embodiment, at least one ROG included in at least one ROG subset corresponding to the value of the first index is permitted to be used in multiple PRACH transmissions. For example, the value of the first index corresponds to the first ROG subset, and at least one ROG included in the first ROG subset is permitted to be used in multiple PRACH transmissions.

[0202] As one embodiment, at least one ROG included in at least one ROG subset among multiple ROG subsets is prohibited from being used for multiple PRACH transmissions.

[0203] As one embodiment, at least one ROG included in at least one ROG subset corresponding to the value of the first index is prohibited from being used in multiple PRACH transmissions. For example, if the value of the first index corresponds to a second ROG subset, at least one ROG included in the second ROG subset is prohibited from being used in multiple PRACH transmissions.

[0204] As one embodiment, at least one ROG belonging to some ROG subsets that are part of a plurality of ROG subsets is permitted to be used for multiple PRACH transmissions, while at least one ROG belonging to another ROG subset that are part of a plurality of ROG subsets is prohibited from being used for multiple PRACH transmissions.

[0205] In other words, at least one ROG in at least one ROG subset (e.g., the first ROG subset) among multiple ROG subsets is permitted to be used in multiple PRACH transmissions, while at least one ROG in at least one ROG subset (e.g., the second ROG subset) among multiple ROG subsets is prohibited from being used in multiple PRACH transmissions.

[0206] As one example, any ROG subset in multiple ROG subsets is associated with the same SS / PBCH.

[0207] As one example, any ROG subset in multiple ROG subsets is associated with the same SS / PBCH index.

[0208] As one embodiment, the third signaling is used to construct a correspondence between multiple non-negative integers and multiple ROG subsets.

[0209] In one embodiment, the third signaling signal is transmitted from the second node. The second node may be, for example, a network device, or it may be another node other than a network device.

[0210] As one embodiment, the third signaling may be upper layer signaling or an even higher layer signaling. For example, the third signaling may include RRC layer signaling, or the third signaling may include MAC layer signaling.

[0211] In one embodiment, the correspondence between multiple non-negative integers and multiple ROG subsets may be pre-configured, for example, by a network.

[0212] As mentioned above, there may be various embodiments of the value of the first index, and the following are illustrative examples of embodiments of the value of the first index.

[0213] Embodiment 1: The value of the first index is used to indicate the ROG index. In one embodiment, the value of the first index corresponds to the first ROG index, and the first ROG index is used to determine the first ROG from multiple ROGs. In other words, the value of the first index is used to indicate the first ROG index, and the first ROG index is used to determine the first ROG from multiple ROGs (multiple ROGs determined by the first signaling).

[0214] In one embodiment, the value of the first index corresponds to at least one ROG index, or in other words, the value of the first index corresponds to one or more ROG indices.

[0215] In one embodiment, the value of the first index corresponds to one ROG index. For example, the value of the first index corresponds to the first ROG index.

[0216] In one embodiment, the value of the first index corresponds to multiple ROG indices. For example, the value of the first index corresponds to the first ROG index and the second ROG index.

[0217] As one example, one of the ROG indices in a group of ROG indices is used to determine one ROG from among several ROGs. In other words, one of the ROG indices in a group of ROG indices is used to determine one ROG from among several ROGs determined by the first signaling. For example, the value of the first index corresponds to the first ROG index and the second ROG index, with the first ROG index being used to determine the first ROG and the second ROG index being used to determine the second ROG.

[0218] Embodiment 2: The value of the first index is used to indicate the number of ROs. In one embodiment, the value of the first index corresponds to the first occasion number, and the number of ROs included in at least one ROG among multiple ROGs is equal to the first occasion number.

[0219] As one example, the first occasion number is equal to one of {2, 4, 8}.

[0220] In one embodiment, the first occasion number is equal to the number of ROs included in the first ROG. That is, when the value of the first index is used to represent the first ROG, the value of the first index can be determined as the number of ROs included in the first ROG.

[0221] In one embodiment, the value of the first index may include the number of ROs and other information. For example, the value of the first index may be used to indicate the RO index and the number of ROs in order to indicate at least one ROG among multiple ROGs.

[0222] Embodiment 3: The value of the first index is used to indicate the RO index. In one embodiment, the value of the first index corresponds to the first RO index, and the first RO index is used to determine the first RO from multiple ROs included in multiple ROGs.

[0223] In one embodiment, the first RO is used to determine the first ROG.

[0224] As one example, the first RO and the first occasion number are used together to determine the first ROG.

[0225] As one example, any RO in multiple ROs included in multiple ROGs is one of the multiple ROGs.

[0226] As one example, multiple ROs included in multiple ROGs belong to different ROGs.

[0227] As one example, multiple ROs included in multiple ROGs belong to the same ROG.

[0228] As one embodiment, one of the ROs in multiple ROGs included in multiple ROGs is one of the ROs in multiple ROGs included in one ROG in the multiple ROGs.

[0229] In one embodiment, multiple ROGs each contain multiple ROs.

[0230] As one embodiment, any ROG in multiple ROGs includes multiple ROs.

[0231] As one embodiment, the first RO belongs to the first ROG.

[0232] As one example, the first RO is one of several ROs included in the first ROG.

[0233] In one embodiment, the first RO is the first RO among multiple ROs included in the first ROG.

[0234] As one embodiment, the first RO is the last RO among several ROs included in the first ROG.

[0235] The embodiments of the first index values ​​listed above can be used individually or in any combination, and the embodiments of this application are not limited thereto. For example, the ROG index may be used alone as the first index value. Alternatively, the RO number may be used alone as the first index value. Alternatively, the ROG index and the RO number may be used as the first index value. Alternatively, the RO index and the RO number may be used as the first index value.

[0236] As mentioned above, the second signaling may be used to indicate the value of the first index. For ease of understanding, an embodiment in which the second signaling indicates the value of the first index will be described below.

[0237] In one embodiment, the second signaling includes multiple indicator fields, at least one of which is used to indicate the value of the first index.

[0238] The embodiments of this application are not limited to the multiple indicator fields included in the second signaling. In one embodiment, the multiple indicator fields include at least two of the following: an uplink / supplementary uplink indicator (UL / SUL indicator) field, an SS / PBCH index field, a first index field, and reserved bits.

[0239] In one embodiment, if the second signaling includes DCI or DCI format 1_0, the multiple indicator fields include at least two of the following: UL / SUL indicator field, SS / PBCH index field, first index field, and reserved bit field.

[0240] In one embodiment, the first index field may refer to the ROG mask index field.

[0241] In one embodiment, the first index field may be an RO mask index field.

[0242] In one embodiment, the first index field may be used to indicate at least one ROG in a plurality of ROGs. In this case, the first index field may be used to indicate one or more ROGs, and one or more ROGs indicated by the first index field may be associated with any SS / PBCH block. Furthermore, one or more ROGs indicated by the first index field may be permitted to be used in multiple PRACH transmissions, and one or more ROGs indicated by the first index field may be prohibited from being used in multiple PRACH transmissions.

[0243] In one embodiment, the SS / PBCH index field and the first index field may be used together to indicate at least one ROG in multiple ROGs. In this case, the first index field is used to indicate one or more ROGs associated with the SS / PBCH index indicated by the SS / PBCH index field, and one or more ROGs associated with the SS / PBCH index indicated by the first index field are permitted to be used in multiple PRACH transmissions, while one or more ROGs associated with the SS / PBCH index indicated by the first index field are prohibited from being used in multiple PRACH transmissions.

[0244] As one embodiment, the multiple instruction fields included in the second signaling may further include other instruction fields other than those listed above. For example, the multiple instruction fields included in the second signaling may include at least two of the following: a second signaling format identifier field, a frequency domain resource assignment field, a random access preamble index field, a UL / SUL indicator field, an SS / PBCH index field, a first index field, and a reserved bit field.

[0245] In one embodiment, if the second signaling includes DCI, or if the second signaling includes DCI format1_0, the multiple indicator fields include at least two of the following: DCI format identifier field, frequency domain resource allocation field, random access preamble index field, UL / SUL indicator field, SS / PBCH index field, first index field, and reserved bit field.

[0246] As one example, the value of the DCI format identifier field is 1.

[0247] In one embodiment, all values ​​in the frequency domain resource allocation field are set to 1.

[0248] As one example, all values ​​in the random access preamble index field are 0.

[0249] In one embodiment, all values ​​in the frequency domain resource allocation field are 1, and all values ​​in the random access preamble index field are 0.

[0250] As one example, the value of the UL / SUL indicator field is a reserved value.

[0251] As one example, the value of the SS / PBCH index field is one of the values ​​from 0 to 63.

[0252] In one example, the value of the first index field is one of the numbers from 0 to 10.

[0253] As one example, the value of the SS / PBCH index field is one of 0 to 63, and the value of the first index field is one of 0 to 10.

[0254] As one example, the value of the SS / PBCH index field is a reserved value.

[0255] As one example, the value of the SS / PBCH index field is a reserved value, and the value of the first index field is one of the values ​​from 0 to 10.

[0256] To facilitate understanding, the solutions of the embodiments of this application are introduced below with reference to several specific examples. Note that the following examples do not limit the solutions of the embodiments of this application. Furthermore, while the following examples illustrate the case where a PDCCH order initiates a random access process, the embodiments of this application are not limited to this, and can be applied to random access processes initiated by other methods.

[0257] Example 1: When the PDCCH order initiates a random access process for multiple PRACH transmissions based on competition, at least one of the UL / SUL indicator field, SS / PBCH index field, PRACH mask index field, and reserved bit field in the second signaling (e.g., DCI format1_0) is used to indicate a collision-prone ROG. The first node receives the ROG indicated by the second signaling and uses it to randomly select a random access resource from the other random access resources excluding this ROG to execute the random access process for the multiple PRACH transmissions.

[0258] As one embodiment, the SS / PBCH index field and PRACH mask index field in the second signaling are used to indicate ROGs that are prone to causing collisions together, or in other words, the SS / PBCH index field and PRACH mask index field in the second signaling are used to indicate ROGs that are prohibited from being used together in multiple PRACH transmissions.

[0259] In one embodiment, the SS / PBCH index field in the second signaling is used to indicate a single SS / PBCH index, and the PRACH mask index field is used to indicate a specific ROG associated with the SS / PBCH index, and the specific ROG associated with the SS / PBCH index cannot be used by the user device to transmit multiple PRACH transmissions.

[0260] To facilitate understanding, please refer to Table 4 below. As an example, the SS / PBCH index field and PRACH mask index field in the second signaling are used to indicate ROGs that are prone to collisions.

[0261] [Table 4] As one embodiment, the PRACH mask index field in the second signaling is used to indicate a collision-prone ROG, in other words, the PRACH mask index field in the second signaling is used to indicate a collision-prone ROG on its own, or to indicate an ROG that is prohibited from being used in multiple PRACH transmissions on its own.

[0262] In one embodiment, only the PRACH mask index field in the second signaling is used to indicate a specific ROG, and a specific ROG associated with any SS / PBCH block cannot be selected by the user device and used for multiple PRACH transmissions.

[0263] To facilitate understanding, please refer to Table 5 below, where, as an example, the PRACH mask index field in the second signaling is used to indicate a ROG that is prone to collisions on its own.

[0264] [Table 5] Example 2: When the PDCCH order initiates a non-contradiction-based random access process, the PRACH mask indicator field in the conventional DCI format1_0 may indicate only a specific RO associated with a given SS / PBCH block. In other words, the PRACH mask indicator field in the conventional DCI format1_0 cannot accurately indicate multiple ROs used in multiple PRACH transmissions.

[0265] To accurately indicate multiple ROs used in multiple PRACH transmissions, in embodiments of the present invention, one or more indicator fields in the second signaling may be used to accurately indicate an ROG or to accurately indicate multiple ROs.

[0266] As one embodiment, an ROG or multiple ROs precisely indicated by one or more indicator fields in the second signaling is permitted to be used for multiple PRACH transmissions.

[0267] As one embodiment, an ROG or multiple ROs precisely indicated by one or more indicator fields in the second signaling is prohibited from being used in multiple PRACH transmissions.

[0268] There are various embodiments in which the second signaling indicates an ROG or multiple ROs, for example, it may indicate only the ROG index, or a combination of the index and RO number of the first RO in multiple ROs, or it may indicate only the RO number, and so on. For specific examples, please refer to the description above.

[0269] As one embodiment, instructions (e.g., ROG, multiple ROs) corresponding to the values ​​of the instruction fields of an ROG or multiple ROs accurately indicated by the second signaling (multiple non-negative integers mentioned earlier, where the value of the first index is one of the values ​​of the instruction field) can be constructed by upper-layer signaling (e.g., RRC layer signaling). The following describes the instructions corresponding to the values ​​of the PRACH mask index instruction fields, using Figures 5 to 10 as an example, where the second signaling uses the PRACH mask index instruction field to indicate an ROG or multiple ROs.

[0270] Figure 5 shows an example of an indication corresponding to a value in the PRACH mask index indication field. In the example in Figure 5, the ROG (e.g., one or more ROGs) or ROs corresponding to the value in the PRACH mask index indication field are permitted to be used for multiple PRACH transmissions. In the example in Figure 5, the value in the PRACH mask index indication field corresponds to an ROG index, or the ROG or ROs corresponding to the value in the PRACH mask index indication field are indicated using an ROG index.

[0271] As an example, the value of the PRACH mask index indication field is used to indicate at least one ROG index.

[0272] As an example, the value of the PRACH mask index indication field is used to indicate one ROG index.

[0273] As an example, the value of the PRACH mask index indication field is used to indicate at least one ROG index that is permitted to be used for multiple PRACH transmissions.

[0274] As an example, the value of the PRACH mask index indication field is used to indicate one ROG index that is permitted to be used for multiple PRACH transmissions.

[0275] FIG. 6 shows an example of an indication corresponding to the value of another PRACH mask index indication field. In the example of FIG. 6, the ROG (e.g., one or more ROGs) or multiple ROs corresponding to the value of the PRACH mask index indication field are permitted to be used for multiple PRACH transmissions. In the example of FIG. 6, the value of the PRACH mask index indication field corresponds to the RO index and the number of ROs, or the ROG or multiple ROs corresponding to the value of the PRACH mask index indication field are indicated using the RO index and the number of ROs.

[0276] As an example, the value of the PRACH mask index indication field is used to indicate at least one RO index and at least one number of ROs.

[0277] As an example, the value of the PRACH mask index indication field is used to indicate one ROG index and one number of ROs.

[0278] In one embodiment, the value of the PRACH mask index indicator field is used to indicate at least one RO index and at least one RO number that are permitted to be used for multiple PRACH transmissions.

[0279] In one embodiment, the value of the PRACH mask index indicator field is used to indicate one ROG index and one RO number that are permitted to be used for multiple PRACH transmissions.

[0280] Figure 7 shows another example of an instruction corresponding to a value in the PRACH mask index instruction field. In the example in Figure 7, the ROG (e.g., one or more ROGs) or ROs corresponding to the value in the PRACH mask index instruction field are permitted to be used for multiple PRACH transmissions. In the example in Figure 7, the value in the PRACH mask index instruction field corresponds to the number of ROs, or the ROG or ROs corresponding to the value in the PRACH mask index instruction field are indicated using the number of ROs.

[0281] In one embodiment, the value of the PRACH mask index indicator field is used to indicate at least one RO number.

[0282] In one embodiment, the value of the PRACH mask index indicator field is used to indicate a single RO number.

[0283] In one embodiment, the value of the PRACH mask index indicator field is used to indicate at least one RO number that is permitted to be used for multiple PRACH transmissions.

[0284] In one embodiment, the value of the PRACH mask index indicator field is used to indicate a single RO number that is permitted to be used for multiple PRACH transmissions.

[0285] Figure 8 shows another example of an instruction corresponding to a value in the PRACH mask index instruction field. In the example in Figure 8, an ROG (e.g., one or more ROGs) or ROs corresponding to a value in the PRACH mask index instruction field is permitted to be used in multiple PRACH transmissions. In the example in Figure 8, the value in the PRACH mask index instruction field corresponds to an ROG index, and the RO index and number of ROs, or the ROG or ROs corresponding to a value in the PRACH mask index instruction field, are indicated using the ROG index, RO index and number of ROs.

[0286] In one embodiment, the value of the PRACH mask index indicator field is used to indicate at least one ROG index, at least one RO index, and at least one RO number.

[0287] In one embodiment, the value of the PRACH mask index indicator field is used to indicate one ROG index, one RO index, and one RO number.

[0288] In one embodiment, the value of the PRACH mask index indicator field is used to indicate at least one ROG index, at least one RO index, and at least one RO number that are permitted to be used in multiple PRACH transmissions.

[0289] In one embodiment, the value of the PRACH mask index indicator field is used to indicate one ROG index, one RO index, and one RO number that are permitted to be used in multiple PRACH transmissions.

[0290] Figure 9 shows another example of an instruction corresponding to a value in the PRACH mask index instruction field. In the example in Figure 9, the ROG (e.g., one or more ROGs) or ROs corresponding to the value in the PRACH mask index instruction field are prohibited from being used in multiple PRACH transmissions. In the example in Figure 9, the value in the PRACH mask index instruction field corresponds to the ROG index, or the ROG or ROs corresponding to the value in the PRACH mask index instruction field are indicated using the ROG index.

[0291] In one embodiment, the value of the PRACH mask index indicator field is used to indicate at least one ROG index in which multiple PRACH transmissions are prohibited.

[0292] In one embodiment, the value of the PRACH mask index indicator field is used to indicate a single ROG index in which multiple PRACH transmissions are prohibited.

[0293] Figure 10 shows another example of instructions corresponding to values ​​in the PRACH mask index instruction field. In the example in Figure 10, some of the values ​​in the PRACH mask index instruction field are permitted to be used in multiple PRACH transmissions as ROGs (e.g., one or more ROGs) or ROs, while some of the values ​​are prohibited from being used in multiple PRACH transmissions as ROGs. In the example in Figure 10, the values ​​in the PRACH mask index instruction field correspond to one or more of the ROG index, RO index, and RO number, or the ROGs or ROs corresponding to the values ​​in the PRACH mask index instruction field are indicated using one or more of the ROG index, RO index, and RO number.

[0294] In one embodiment, the value of the PRACH mask index indicator field is used to indicate one or more of the ROG index, RO index, and RO number for which multiple PRACH transmissions are permitted.

[0295] As an example, the value of the PRACH mask index indication field is used to indicate one or more of the ROG index, RO index, and number of ROs for which a plurality of PRACH transmissions are prohibited.

[0296] Note that FIGS. 5 to 10 are illustrated for ease of understanding, and for simplicity, other combination methods are not enumerated. In reality, the indication corresponding to the value of the PRACH mask index indication field can be arbitrarily combined and indicated using one or more of the ROG index, RO index, and number of ROs. Also, the indication corresponding to the value of the PRACH mask index indication field may be permitted to be used for a plurality of PRACH transmissions, or may be prohibited from being used for a plurality of PRACH transmissions, or some may be permitted to be used for a plurality of PRACH transmissions and some may be prohibited from being used for a plurality of PRACH transmissions.

[0297] Furthermore, the values of the PRACH mask indication field in FIGS. 5 to 10 are merely examples, and do not limit the value of the PRACH mask indication field in the present application to be merely the enumerated values. Also, FIGS. 5 to 10 show the value of the PRACH mask index indication field using non - negative integers 0 to 15, but the embodiments of the present application are not limited thereto, and for example, it can be shown using non - negative integers 0 to 31.

[0298] Above, while referring to FIGS. 2 to 10, the method of the first node used in wireless communication according to the embodiments of the present application will be described in detail from the perspective of the first node. Hereinafter, while referring to FIG. 11, the method of the second node used in wireless communication according to the embodiments of the present application will be described from the perspective of the second node. Note that since the descriptions of the first node and the second node correspond to each other, for the parts where detailed descriptions are omitted, refer to the above - described content.

[0299] As an example, the second node may be a node that transmits the first signaling and / or the second signaling in the communication system.

[0300] In one embodiment, the second node may be a base station.

[0301] In one embodiment, the second node may include one or more emitters. For example, the second node may include a first emitter and a second emitter.

[0302] In one embodiment, the second node may include the first receiver.

[0303] Figure 11 is a flowchart of the method at the second node used for wireless communication according to an embodiment of the present invention. The method shown in Figure 11 may include steps S1110 and S1120.

[0304] In step S1110, the first signaling is transmitted.

[0305] In one embodiment, the first signaling is used to determine multiple ROGs, and any ROG in the multiple ROGs includes multiple ROs.

[0306] In step S1120, the second signaling is transmitted.

[0307] In one embodiment, the second signaling is used to indicate the value of the first index, and the value of the first index corresponds to at least one ROG among multiple ROGs.

[0308] As one embodiment, the method further includes receiving multiple PRACHs. The multiple PRACHs are sent on a target ROG, which is one of at least one ROG corresponding to the value of the first index.

[0309] As one embodiment, the method further comprises receiving a plurality of PRACHs. The plurality of PRACHs are transmitted at a target ROG. The target ROG is one ROG other than at least one ROG corresponding to the value of a first index in a plurality of ROGs determined by a first signaling.

[0310] In one embodiment, the value of the first index is one of a plurality of non-negative integers, where the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0311] As one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of a plurality of physical random access channel occasion group subsets is permitted to be used for transmission across multiple physical random access channels.

[0312] As one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of multiple physical random access channel occasion group subsets is prohibited from being used for transmission across multiple physical random access channels.

[0313] In one embodiment, the third signaling is used to establish a correspondence between a plurality of non-negative integers and a plurality of physical random access channel occasion group subsets.

[0314] In one embodiment, at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronous signal / physical broadcast channel block index.

[0315] In one embodiment, the value of the first index corresponds to the first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from multiple physical random access channel occasion groups.

[0316] In one embodiment, the value of the first index corresponds to the first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in a group of multiple physical random access channel occasions is equal to the first number of occasions.

[0317] As one embodiment, the value of the first index corresponds to the first physical random access channel occasion index, and the first physical random access channel occasion index is used to determine the first physical random access channel occasion from multiple physical random access channel occasions included in multiple physical random access channel occasion groups, and any physical random access channel occasion in multiple physical random access channel occasions included in multiple physical random access channel occasion groups is one of the multiple physical random access channel occasion groups.

[0318] In one embodiment, the second signaling includes multiple indicator fields, at least one of which is used to indicate the value of the first index.

[0319] In one embodiment, the multiple indicator fields include at least two of the following: an uplink / supplementary uplink indicator field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field, wherein the first index field is used to indicate at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups.

[0320] The method embodiments of this application have been described in detail above with reference to Figures 1 to 11. Now, the apparatus embodiments of this application will be described in detail below with reference to Figures 12 to 15. It should be understood that the description of the method embodiments corresponds to the description of the apparatus embodiments, so for parts that are not described in detail, you can refer to the method embodiments described above.

[0321] Figure 12 is a schematic diagram of the structure of a node used for wireless communication according to one embodiment of the present invention. The node 1200 shown in Figure 12 may be any of the first nodes mentioned in the preamble. This node 1200 may include a first receiver 1210 and a second receiver 1220.

[0322] The first receiver 1210 may be used to receive a first signaling, which is used to determine a plurality of physical random access channel occasion groups, each of the plurality of physical random access channel occasion groups includes a plurality of physical random access channel occasions.

[0323] A second receiver 1220 may be used to receive a second signaling, which is used to indicate the value of the first index, and the value of the first index corresponds to at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups.

[0324] In one embodiment, node 1200 may include a first emitter that transmits multiple physical random access channels in a target physical random access channel occasion group, the target physical random access channel occasion group being one of at least one physical random access channel occasion groups corresponding to a first index value.

[0325] In one embodiment, node 1200 may include a first emitter that transmits multiple physical random access channels in a target physical random access channel occasion group, the target physical random access channel occasion group being a physical random access channel occasion group other than at least one physical random access channel occasion group corresponding to a first index value in the multiple physical random access channel occasion groups determined by the first signaling.

[0326] In one embodiment, the value of the first index is one of a plurality of non-negative integers, where the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0327] As one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of a plurality of physical random access channel occasion group subsets is permitted to be used for transmission across multiple physical random access channels.

[0328] As one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of multiple physical random access channel occasion group subsets is prohibited from being used for transmission across multiple physical random access channels.

[0329] In one embodiment, the third signaling is used to establish a correspondence between a plurality of non-negative integers and a plurality of physical random access channel occasion group subsets.

[0330] In one embodiment, at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronous signal / physical broadcast channel block index.

[0331] In one embodiment, the value of the first index corresponds to the first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from multiple physical random access channel occasion groups.

[0332] In one embodiment, the value of the first index corresponds to the first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in multiple physical random access channel occasion groups is equal to the first number of occasions.

[0333] As one embodiment, the value of the first index corresponds to the first physical random access channel occasion index, and the first physical random access channel occasion index is used to determine the first physical random access channel occasion from multiple physical random access channel occasions included in multiple physical random access channel occasion groups, and any physical random access channel occasion in multiple physical random access channel occasions included in multiple physical random access channel occasion groups is one of the multiple physical random access channel occasion groups.

[0334] In one embodiment, the second signaling includes multiple indicator fields, at least one of which is used to indicate the value of the first index.

[0335] In one embodiment, the multiple indicator fields include at least two of the following: an uplink / supplementary uplink indicator field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field, wherein the first index field is used to indicate at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups.

[0336] In one embodiment, the first receiver 1210 and the second receiver 1220 may be a transceiver 1430. The first node 1200 may further include a processor 1410 and memory 1420, specifically as shown in Figure 14.

[0337] Figure 13 is a schematic diagram of the structure of a node used for wireless communication according to another embodiment of the present application. The node 1300 shown in Figure 13 may be any of the second nodes mentioned in the preceding paragraph. This node 1300 may include a first emitter 1310 and a second emitter 1320.

[0338] The first emitter 1310 may be used to transmit a first signaling, which is used to determine a group of physical random access channel occasions, and each of the group of physical random access channel occasions includes a group of physical random access channel occasions.

[0339] The second emitter 1320 may be used to transmit a second signaling, which is used to indicate the value of the first index, which corresponds to at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups.

[0340] In one embodiment, node 1300 may further include a first receiver that receives a plurality of physical random access channels, the plurality of physical random access channels transmitted in a target physical random access channel occasion group, the target physical random access channel occasion group being one of at least one physical random access channel occasion group corresponding to a value of a first index.

[0341] In one embodiment, node 1300 may further include a first receiver that receives a plurality of physical random access channels, the plurality of physical random access channels transmitted in a target physical random access channel occasion group, the target physical random access channel occasion group being a physical random access channel occasion group other than at least one physical random access channel occasion group corresponding to a first index value in the plurality of physical random access channel occasion groups determined by first signaling.

[0342] In one embodiment, the value of the first index is one of a plurality of non-negative integers, where the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets includes at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0343] As one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of a plurality of physical random access channel occasion group subsets is permitted to be used for transmission across multiple physical random access channels.

[0344] As one embodiment, at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of multiple physical random access channel occasion group subsets is prohibited from being used for transmission across multiple physical random access channels.

[0345] In one embodiment, the third signaling is used to establish a correspondence between a plurality of non-negative integers and a plurality of physical random access channel occasion group subsets.

[0346] In one embodiment, at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronous signal / physical broadcast channel block index.

[0347] In one embodiment, the value of the first index corresponds to the first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from multiple physical random access channel occasion groups.

[0348] In one embodiment, the value of the first index corresponds to the first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in a group of multiple physical random access channel occasions is equal to the first number of occasions.

[0349] As one embodiment, the value of the first index corresponds to the first physical random access channel occasion index, and the first physical random access channel occasion index is used to determine the first physical random access channel occasion from multiple physical random access channel occasions included in multiple physical random access channel occasion groups, and any physical random access channel occasion in multiple physical random access channel occasions included in multiple physical random access channel occasion groups is one of the multiple physical random access channel occasion groups.

[0350] In one embodiment, the second signaling includes multiple indicator fields, at least one of which is used to indicate the value of the first index.

[0351] In one embodiment, the multiple indicator fields include at least two of the following: an uplink / supplementary uplink indicator field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field, wherein the first index field is used to indicate at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in a plurality of physical random access channel occasion groups.

[0352] In one embodiment, the first emitter 1310 and the second emitter 1320 may be a transceiver 1430. The second node 1300 may further include a processor 1410 and a memory 1420, specifically as shown in Figure 14.

[0353] Figure 14 is a schematic diagram of the structure of a communication device in an embodiment of the present invention. The dashed lines in Figure 14 indicate that the unit or module is selectable. This device 1400 may be used to implement the method described in the embodiment of the above method. The device 1400 may be a chip, user equipment, or network equipment.

[0354] The apparatus 1400 may include one or more processors 1410. These processors 1410 can support the apparatus 1400 in implementing the methods described in the embodiments of the above method. These processors 1410 may be general-purpose processors or dedicated processors. For example, these processors may be central processing units (CPUs). Alternatively, these processors may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or these processors may be any conventional processor, etc.

[0355] The device 1400 may further include one or more memories 1420. A program is stored in the memory 1420, which can be executed by the processor 1410 to cause the processor 1410 to perform the method described in the embodiment of the above method. The memory 1420 may be independent of the processor 1410 or may be integrated with the processor 1410.

[0356] The device 1400 may further include a transceiver 1430. The processor 1410 can communicate with other devices or chips via the transceiver 1430. For example, the processor 1410 can send and receive data with other devices or chips via the transceiver 1430.

[0357] Figure 15 is a schematic diagram of the hardware module of a communication device according to an embodiment of the present application. Specifically, Figure 15 shows a block diagram of a first communication device 450 and a second communication device 410 that communicate with each other in an access network.

[0358] The first communication device 450 includes a controller / processor 459, memory 460, data source 467, transmit processor 468, receive processor 456, multi-antenna transmit processor 457, multi-antenna receive processor 458, transmitter / receiver 454, and antenna 452.

[0359] The second communication device 410 includes a controller / processor 475, memory 476, data source 477, receiving processor 470, transmitting processor 416, multi-antenna receiving processor 472, multi-antenna transmitting processor 471, transmitter / receiver 418, and antenna 420.

[0360] In transmission from the second communication device 410 to the first communication device 450, the second communication device 410 provides the controller / processor 475 with upper-layer data packets from the core network or from the data source 477. The core network and data source 477 represent all protocol layers above the L2 layer. The controller / processor 475 performs the L2 layer functionality. In transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet splitting and reassembly, logic and multiplexing between transmission channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 perform various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 facilitates forward error correction in the second communication device 410 and the mapping of signal clusters based on various modulation modes (e.g., binary phase-shift modulation, quadrature phase-shift modulation, M phase-shift modulation, M quadrature amplitude modulation) by performing coding and interleaving. The multi-antenna transmit processor 471 performs digital spatial precoding and beamforming processing, including codebook-based precoding and non-codebook-based precoding, on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to subcarriers, multiplexes them with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses the inverse fast Fourier transform to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the base-band multicarrier symbol stream provided by the multi-antenna transmit processor 471 into an RF stream and then provides it to a different antenna 420.

[0361] In transmission from the second communication device 410 to the first communication device 450, each receiver 454 in the first communication device 450 receives the signal with its corresponding antenna 452. Each receiver 454 reconstructs the information modulated on the RF carrier and converts the RF stream into a base band multicarrier symbol stream, which is then provided to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 perform various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receive analog precoding / beamforming operation on the base band multicarrier symbol stream from the receiver 454. The receiving processor 456 uses the Fast Fourier Transform to convert the base band multicarrier symbol stream after the receive analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receiving processor 456; the reference signal is used for channel estimation, and the data signal, after multi-antenna detection by the multi-antenna receiving processor 458, reconstructs an arbitrary spatial stream destined for the first communication device 450. Symbols in each spatial stream are demodulated and restored in the receiving processor 456 to generate a soft decision. The receiving processor 456 then decodes and deinterleaves the soft decision to restore 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 code and data. The memory 460 may be called a computer-readable medium. In transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 restores the upper-layer data packets from the second communication device 410 by providing transmission and multiplexing between logic channels, packet reconstruction, decoding, header decompression, and control signal processing. The upper-layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may be provided to L3 for use in L3 processing.

[0362] In transmission from the first communication device 450 to the second communication device 410, the first communication device 450 provides upper-layer data packets to the controller / processor 459 using data source 467. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function of 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 splitting, reassembly, logic, and multiplexing between transmission channels, and performs L2 layer functions used in the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmitting processor 468 performs modulation mapping and channel coding processing, and multi-antenna transmitting processor 457 performs digital multi-antenna spatial precoding and beamforming processing, including codebook-based precoding and non-codebook-based precoding. Transmitting processor 468 then modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, and after analog precoding / beamforming operations are performed in the multi-antenna transmitting processor 457, it is provided to different antennas 452 by transmitter 454. Each transmitter 454 first converts the base band symbol stream provided by the multi-antenna transmitting processor 457 into an RF symbol stream, and then provides it to antenna 452.

[0363] In transmission from the first communication device 450 to the second communication device 410, the functions of the second communication device 410 are the same as the receiving functions of the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an RF signal by its corresponding antenna 420, converts the received RF signal into a baseband signal, and provides the baseband signal to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly perform L1 layer functions. The controller / processor 475 performs L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be called a computer-readable medium. In transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 reconstructs the upper layer data packets from the first communication device 450 by providing transmission and multiplexing between logic channels, packet reconstruction, decoding, header decompression, and control signal processing. Higher layer data packets from the controller / processor 475 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may be provided to the core network or L3 for use in L3 processing.

[0364] As one embodiment, the first communication device 450 includes at least one processor and at least one memory, the at least one memory containing computer program code, the at least one memory and the computer program code are configured to be used together with the at least one processor, the first communication device 450 receives at least a first signaling, the first signaling is used to determine a plurality of physical random access channel occasion groups, each of the plurality of physical random access channel occasion groups includes a plurality of physical random access channel occasions, and the first communication device 450 receives a second signaling, the second signaling is used to indicate the value of a first index, the value of the first index corresponds to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0365] As one embodiment, the first communication device 450 includes a memory for storing a computer-readable instruction program, the computer-readable instruction program, when executed by at least one processor, generates an operation, the operation includes receiving a first signaling, the first signaling being used to determine a plurality of physical random access channel occasion groups, each physical random access channel occasion group comprising a plurality of physical random access channel occasions, and receives a second signaling, the second signaling being used to indicate a value of a first index, the value of the first index corresponding to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

[0366] In one embodiment, the first communication device 450 corresponds to the first node in this application.

[0367] In one embodiment, the second communication device 410 corresponds to the second node in this application.

[0368] In one embodiment, the first communication device 450 is a single NCR.

[0369] In one embodiment, the first communication device 450 is a single user device.

[0370] As one embodiment, the first communication device 450 is a user device that supports V2X.

[0371] As one embodiment, the first communication device 450 is a user device that supports D2D.

[0372] In one embodiment, the second communication device 410 is a base station.

[0373] In one embodiment, an antenna 452, a receiver 454, a multi-antenna receiving processor 458, a receiving processor 456, and a controller / processor 459 are used to receive the first signaling and / or the second signaling in this application.

[0374] In one embodiment, an antenna 420, a transmitter 418, a multi-antenna transmitting processor 471, a transmitting processor 416, and a controller / processor 475 are used to transmit the first signaling and / or the second signaling in this application.

[0375] In one embodiment, an antenna 452, a transmitter 454, a multi-antenna transmitting processor 457, a transmitting processor 468, and a controller / processor 459 are used to transmit multiple PRACHs in this application.

[0376] In one embodiment, an antenna 420, a receiver 418, a multi-antenna receiving processor 472, a receiving processor 470, and a controller / processor 475 are used to receive multiple PRACHs in this application.

[0377] Embodiments of the present application further provide a computer-readable storage medium used for storing a program. This computer-readable storage medium can be applied to a terminal or network device according to an embodiment of the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0378] Embodiments of the present application further provide a computer program product. This computer program product includes a program. This computer program product can be applied to a terminal or network device according to an embodiment of the present application, and this program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0379] Embodiments of the present application further provide a computer program. This computer program can be applied to a terminal or network device according to an embodiment of the present application, and this computer program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0380] It should be understood that, in this application, the terms “system” and “network” may be used interchangeably. Furthermore, the terms used in this application are used solely to interpret the specific embodiments of this application and are not intended to limit it. Terms such as “first,” “second,” “third,” and “fourth” in the specification, claims, and drawings of this application are used to distinguish different subjects, not to describe a specific order. Also, the terms “including,” “having,” and any variations thereof are intended to cover non-exclusive inclusion.

[0381] In the embodiments of the present application, the "show" referred to may be direct, indirect, or indicate a related relationship. For example, A showing B may be A directly showing B, for example, showing that B can be obtained by A; A indirectly showing B, for example, A showing C and showing that B can be obtained by C; or it may be A showing a related relationship between A and B.

[0382] In the embodiments of this application, "B corresponding to A" indicates that B is associated with A and that B can be determined in accordance with A. However, determining B in accordance with A does not mean determining B in accordance with A alone, but rather that B may be determined in accordance with A and / or other information.

[0383] In the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between the two, or that there is a related relationship between the two, or that indicating means indicating, or that forming means forming.

[0384] In the embodiments of this application, “pre-defined” or “pre-configured” may be implemented by pre-storing in a device (including, for example, user devices and network devices) a form that can indicate the corresponding code, form, or related information, and this application does not limit the specific embodiments thereof. For example, pre-defined may mean defined in a protocol.

[0385] In the embodiments of this application, “protocol” may refer to a standard protocol in the field of communications, and may include, for example, the LTE protocol, the NR protocol, and related protocols applicable to future communications systems, but is not limited to this.

[0386] In the embodiments of this application, the term "and / or" simply describes the relationship between related objects and indicates that three types of relationships exist. For example, A and / or B includes three situations: A exists alone, A and B exist simultaneously, and B exists alone. In this specification, the symbol " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0387] In the various embodiments of the present application, the magnitude of the process numbers does not indicate the order of execution, and the execution order of each process should be determined based on its function and inherent logic, and does not constitute any limitation on the implementation processes of the embodiments of the present application.

[0388] In some embodiments relating to this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other forms. For example, the device embodiments described above are merely illustrative, and for instance, the division of units is merely one type of logic function division. In actual implementations, other division methods may be used, for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed. Furthermore, the mutual coupling, direct coupling, or communication connection described or considered may also be an indirect coupling or communication connection via some interface, device, or unit, and may be in the form of electrical, mechanical, or other means.

[0389] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual requirements to achieve the objectives of the means of this embodiment.

[0390] Furthermore, each functional unit in each embodiment of the present application may be integrated into a single processing unit, each unit may exist physically separately, and two or more units may be integrated into a single unit.

[0391] In the embodiments described above, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. If implemented by software, all or part of the embodiments may be implemented in the form of a computer program product. A computer program product includes one or more computer instructions. Loading and executing the computer program instructions into a computer generates all or part of the procedures or functions described in the embodiments of this application. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic cable, digital subscriber line (DSL)) or wirelessly (e.g., infrared, radio, microwave, etc.). The computer-readable storage medium may be any available medium that a computer can read, or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid state disks (SSDs)).

[0392] The above describes specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any modifications or substitutions that a person skilled in the art could easily conceive without departing from the technical scope disclosed herein fall within the scope of protection of this application. Therefore, the scope of protection of this application should be the same as the scope of protection of the claims. [Explanation of Symbols]

[0393] 1. Uplink Transmission 2. Uplink Transmission 3 RO Index 100 Wireless Communication Systems 110 Network Equipment 120 User Equipment 410 Second communication equipment 416 Transmitting Processors 418 Transmitter / Receiver 420 Antenna 450 1st communication equipment 452 Antenna 454 Transmitter / Receiver 456 Receiver Processors 457 Multi-Antenna Transmitter Processor 458 Multi-Antenna Receiving Processor 459 processors 460 memory 467 data sources 468 Transmit Processors 470 Receiver Processors 471 Multi-Antenna Transmitter Processor 472 Multi-Antenna Receiving Processor 475 Processors 476 memory 477 data sources 1200 Node 1 1210 First Receiver 1220 2nd Receiver 1300 2nd Node 1310 First Emitter 1320 Second Emitter 1400 equipment 1410 Processor 1420 memory 1430 Transmitter / Receiver

Claims

1. A first node used for wireless communication, A first receiver that receives a first signaling, the first signaling is used to determine a plurality of physical random access channel occasion groups, and each of the plurality of physical random access channel occasion groups comprises a plurality of physical random access channel occasions, the first receiver and A first node comprising a second receiver that receives a second signaling, the second signaling being used to indicate a value of a first index, the value of the first index corresponding to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

2. A first emitter that transmits multiple physical random access channels in a target physical random access channel occasion group, The first node according to claim 1, wherein the target physical random access channel occasion group is one of the at least one physical random access channel occasion groups corresponding to the value of the first index.

3. A first emitter that transmits multiple physical random access channels in a target physical random access channel occasion group, The first node according to claim 1, wherein the target physical random access channel occasion group is a physical random access channel occasion group other than the at least one physical random access channel occasion group that corresponds to the value of the first index in the plurality of physical random access channel occasion groups determined by the first signaling.

4. The first node according to any one of claims 1 to 3, wherein the value of the first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each of the plurality of physical random access channel occasion group subsets comprises at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

5. The first node according to claim 4, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is permitted to be used for transmission of a plurality of physical random access channels.

6. The first node according to claim 4 or 5, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is prohibited from being used for transmission of the plurality of physical random access channels.

7. The first node according to any one of claims 4 to 6, wherein the third signaling is used to establish a correspondence between the plurality of non-negative integers and the plurality of physical random access channel occasion group subsets.

8. The first node according to any one of claims 1 to 7, wherein the at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronization signal / physical broadcast channel block index.

9. The first node according to any one of claims 1 to 8, wherein the value of the first index corresponds to a first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine a first physical random access channel occasion group from a plurality of physical random access channel occasion groups.

10. The first node according to any one of claims 1 to 9, wherein the value of the first index corresponds to a first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups is equal to the first number of occasions.

11. The first node according to any one of claims 1 to 10, wherein the value of the first index corresponds to a first physical random access channel occasion index, the first physical random access channel occasion index is used to determine the first physical random access channel occasion from a plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups, and each physical random access channel occasion of the plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups belongs to one of the plurality of physical random access channel occasion groups.

12. The first node according to any one of claims 1 to 11, wherein the second signaling comprises a plurality of indicator fields, at least one of the plurality of indicator fields is used to indicate the value of the first index.

13. The plurality of instruction fields comprises at least two of the following: an uplink / supplementary uplink instruction field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field. The first node according to claim 12, wherein the first index field is used to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

14. A second node used for wireless communication, A first emitter that transmits a first signaling, the first signaling being used to determine a plurality of physical random access channel occasion groups, each of the plurality of physical random access channel occasion groups comprising a first emitter having a plurality of physical random access channel occasions, A second node comprising a second emitter that transmits a second signaling, the second signaling being used to indicate a value of a first index, the value of the first index corresponding to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

15. A first receiver is provided that receives multiple physical random access channels, and the multiple physical random access channels are transmitted in a target physical random access channel occasion group. The second node according to claim 14, wherein the target physical random access channel occasion group is one of the at least one physical random access channel occasion groups corresponding to the value of the first index.

16. A first receiver is provided that receives multiple physical random access channels, and the multiple physical random access channels are transmitted in a target physical random access channel occasion group. The second node according to claim 14, wherein the target physical random access channel occasion group is a physical random access channel occasion group other than the at least one physical random access channel occasion group that corresponds to the value of the first index in the plurality of physical random access channel occasion groups determined by the first signaling.

17. The second node according to any one of claims 14 to 16, wherein the value of the first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets comprises at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

18. The second node according to claim 17, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is permitted to be used for transmission of a plurality of physical random access channels.

19. The second node according to claim 17 or 18, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is prohibited from being used for transmission of the plurality of physical random access channels.

20. The second node according to any one of claims 17 to 19, wherein the third signaling is used to establish a correspondence between the plurality of non-negative integers and the plurality of physical random access channel occasion group subsets.

21. The second node according to any one of claims 14 to 20, wherein the at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronization signal / physical broadcast channel block index.

22. The second node according to any one of claims 14 to 21, wherein the value of the first index corresponds to a first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the plurality of physical random access channel occasion groups.

23. The second node according to any one of claims 14 to 22, wherein the value of the first index corresponds to a first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups is equal to the first number of occasions.

24. The second node according to any one of claims 14 to 23, wherein the value of the first index corresponds to a first physical random access channel occasion index, the first physical random access channel occasion index is used to determine the first physical random access channel occasion from a plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups, and each physical random access channel occasion of the plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups belongs to one of the plurality of physical random access channel occasion groups.

25. The second node according to any one of claims 14 to 24, wherein the second signaling comprises a plurality of indicator fields, at least one of the plurality of indicator fields is used to indicate the value of the first index.

26. The plurality of instruction fields comprises at least two of the following: an uplink / supplementary uplink instruction field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field. The second node according to claim 25, wherein the first index field is used to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

27. A method for a first node used in wireless communication, A step of receiving a first signaling, wherein the first signaling is used to determine a plurality of physical random access channel occasion groups, and each of the plurality of physical random access channel occasion groups comprises a plurality of physical random access channel occasions. A method comprising the steps of receiving a second signaling, wherein the second signaling is used to indicate a value of a first index, and the value of the first index corresponds to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

28. The process further includes the step of transmitting multiple physical random access channels in a target physical random access channel occasion group, The method according to claim 27, wherein the target physical random access channel occasion group is one of the at least one physical random access channel occasion groups corresponding to the value of the first index.

29. The process further includes the step of transmitting multiple physical random access channels in a target physical random access channel occasion group, The method according to claim 27, wherein the target physical random access channel occasion group is a physical random access channel occasion group other than the at least one physical random access channel occasion group that corresponds to the value of the first index in the plurality of physical random access channel occasion groups determined by the first signaling.

30. The method according to any one of claims 27 to 29, wherein the value of the first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each of the plurality of physical random access channel occasion group subsets comprises at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

31. The method according to claim 30, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is permitted to be used for transmission of the plurality of physical random access channels.

32. The method according to claim 30 or 31, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is prohibited from being used for transmission of the plurality of physical random access channels.

33. The method according to any one of claims 30 to 32, wherein a third signaling is used to establish a correspondence between the plurality of non-negative integers and the plurality of physical random access channel occasion group subsets.

34. The method according to any one of claims 27 to 33, wherein the at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronization signal / physical broadcast channel block index.

35. The method according to any one of claims 27 to 34, wherein the value of the first index corresponds to a first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the plurality of physical random access channel occasion groups.

36. The method according to any one of claims 27 to 35, wherein the value of the first index corresponds to a first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups is equal to the first number of occasions.

37. The method according to any one of claims 27 to 36, wherein the value of the first index corresponds to a first physical random access channel occasion index, the first physical random access channel occasion index is used to determine the first physical random access channel occasion from a plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups, and each physical random access channel occasion of the plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups belongs to one of the plurality of physical random access channel occasion groups.

38. The method according to any one of claims 27 to 37, wherein the second signaling comprises a plurality of indicator fields, and at least one of the plurality of indicator fields is used to indicate the value of the first index.

39. The plurality of instruction fields comprises at least two of the following: an uplink / supplementary uplink instruction field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field. The method according to claim 38, wherein the first index field is used to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

40. A method for a second node used in wireless communication, A step of transmitting a first signaling, wherein the first signaling is used to determine a plurality of physical random access channel occasion groups, and each of the plurality of physical random access channel occasion groups comprises a plurality of physical random access channel occasions. A method comprising the step of transmitting a second signaling, wherein the second signaling is used to indicate a value of a first index, the value of the first index corresponds to at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

41. The process further comprises the step of receiving multiple physical random access channels, wherein the multiple physical random access channels are transmitted in a target physical random access channel occasion group. The method according to claim 40, wherein the target physical random access channel occasion group is one of the at least one physical random access channel occasion groups corresponding to the value of the first index.

42. The process further comprises the step of receiving multiple physical random access channels, wherein the multiple physical random access channels are transmitted in a target physical random access channel occasion group. The method according to claim 40, wherein the target physical random access channel occasion group is a physical random access channel occasion group other than the at least one physical random access channel occasion group that corresponds to the value of the first index in the plurality of physical random access channel occasion groups determined by the first signaling.

43. The method according to any one of claims 40 to 42, wherein the value of the first index is one of a plurality of non-negative integers, the plurality of non-negative integers correspond one-to-one with a plurality of physical random access channel occasion group subsets, and each physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets comprises at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

44. The method according to claim 43, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is permitted to be used for transmission of the plurality of physical random access channels.

45. The method according to claim 43 or 44, wherein at least one physical random access channel occasion group included in at least one physical random access channel occasion group subset of the plurality of physical random access channel occasion group subsets is prohibited from being used for transmission of the plurality of physical random access channels.

46. The method according to any one of claims 43 to 45, wherein a third signaling is used to establish a correspondence between the plurality of non-negative integers and the plurality of physical random access channel occasion group subsets.

47. The method according to any one of claims 40 to 46, wherein the at least one physical random access channel occasion group corresponding to the value of the first index is associated with the same synchronization signal / physical broadcast channel block index.

48. The method according to any one of claims 40 to 47, wherein the value of the first index corresponds to a first physical random access channel occasion group index, and the first physical random access channel occasion group index is used to determine the first physical random access channel occasion group from the plurality of physical random access channel occasion groups.

49. The method according to any one of claims 40 to 48, wherein the value of the first index corresponds to a first number of occasions, and the number of physical random access channel occasions included in at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups is equal to the first number of occasions.

50. The method according to any one of claims 40 to 49, wherein the value of the first index corresponds to a first physical random access channel occasion index, the first physical random access channel occasion index is used to determine the first physical random access channel occasion from a plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups, and each physical random access channel occasion of the plurality of physical random access channel occasions included in the plurality of physical random access channel occasion groups belongs to one of the plurality of physical random access channel occasion groups.

51. The method according to any one of claims 40 to 50, wherein the second signaling comprises a plurality of indicator fields, and at least one of the plurality of indicator fields is used to indicate the value of the first index.

52. The plurality of instruction fields comprises at least two of the following: an uplink / supplementary uplink instruction field, a synchronization signal / physical broadcast channel block index field, a first index field, and a reserved bit field. The method according to claim 51, wherein the first index field is used to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups, or the synchronization signal / physical broadcast channel block index field and the first index field are used together to indicate at least one physical random access channel occasion group in the plurality of physical random access channel occasion groups.

53. A node for wireless communication, comprising a transceiver, memory, and a processor, wherein the memory is configured to store a program, and the processor is configured to call the program in the memory and control the transceiver to receive or transmit a signal, thereby causing the node to execute the method according to any one of claims 27 to 39 or 40 to 52.

54. A device comprising a processor, wherein the device is configured to execute the method described in any one of claims 27 to 39 or 40 to 52 by calling a program from memory.

55. A chip comprising a processor, wherein the chip and the installed device are configured to execute the method according to any one of claims 27 to 39 or 40 to 52 by calling a program from memory.

56. A computer-readable storage medium, wherein the computer-readable storage medium stores a program, and the program causes a computer to execute the method described in any one of claims 27 to 39 or 40 to 52.

57. A computer program product comprising a program that causes a computer to execute the method described in any one of claims 27 to 39 or 40 to 52.

58. A computer program, wherein the computer program causes a computer to execute the method described in any one of claims 27 to 39 or 40 to 52.

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