Method and device used for wireless communication

Abstract

The invention discloses a method and a device used for wireless communication. A terminal receives a first RRC message, and the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; the first candidate random access resource group and the second candidate random access resource group are both SpCell; initiating a random access process; the random access process is initiated by a PDCCH (Physical Downlink Control Channel) order, and the PDCCH order is used for the SpCell; the random access process comprises the following steps: selecting a first random access resource group; the method comprises the following steps: sending a preamble, and starting a ra-ResponseWindow; the PDCCH order is used for indicating the preamble, and the PDCCH order is used for indicating the preamble; as a response that the ra-Response Window is expired, adding 1 to the PREAMBLETRANSMISSIN COUNTER, and adding 1 to the PREAMBLETRANSMISSIN COUNTER, and adding 1 to the PREAMBLETRANSMISSIN COUNTER; the sum of the PREAMBLETRANSMISSIN COUNTER added with 1 and the sum of the PREAMBLETRANSMISSIN COUNTER added with 1 and the sum of the PREAMBLETRANSMISSIN COUNTER added with 1 and the preamble TransMax added with 1 is equal to each other; and as a response that the PREAMBLETRANSMISSIN COUNTER to which 1 is added is equal to the sum of the preamble TransMax and 1, whether a random access problem depends on at least the first random access resource group is the first candidate random access resource group or the second candidate random access resource group to a higher layer is indicated.

Description

Technical Field

[0001] This application relates to transmission methods and apparatuses in a wireless communication system, and particularly to methods and apparatuses for a random access process. Background Art

[0002] The 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #94e meeting decided to study the uplink multi-TRP / m-TRP operation with two TAs (Timing Advance) in the "MIMO Evolution for Downlink and Uplink" research project. The 3GPP RAN #94e meeting decided to study L1 (Layer 1) / L2 (Layer 2) Triggered Mobility (LTM), including timing advance management for LTM candidate cells, in the "Further NR mobility enhancements" work item. Summary of the Invention

[0003] In the prior art, during the random access process, as a response to the expiration of the ra-ResponseWindow, if the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax is equal, and the Preamble is transmitted on the SpCell, the terminal indicates a random access problem to a higher layer, and the RRC layer determines a Radio Link Failure (RLF) based on the received random access problem indication. Through research, the applicant found that the existing mechanism is not applicable to scenarios such as multi-TRP / m-TRP and LTM, and enhancements are necessary.

[0004] In view of the above problems, the present application provides a solution. In the above problem description, the NR system is taken as an example, and the present application is also applicable to scenarios such as LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), future 5G+ or 6G systems, and achieves technical effects similar to those of the NR system. Further, although the original intention of the present application is for the Uu air interface, the present application can also be used for the PC5 interface and achieve technical effects similar to those of the Uu air interface. Further, although the original intention of the present application is for the scenario between the terminal and the base station, the present application is also applicable to the V2X (Vehicle-to-Everything) scenario, the communication scenarios between the terminal and the relay, and between the relay and the base station, and achieves technical effects similar to those in the scenario between the terminal and the base station. Further, although the original intention of the present application is for the scenario between the terminal and the base station, the present application is also applicable to the communication scenario of IAB (Integrated Access and Backhaul) and achieves technical effects similar to those in the scenario between the terminal and the base station. Further, although the original intention of the present application is for the Terrestrial Network (TN) scenario, the present application is also applicable to the communication scenario of the Non-Terrestrial Network (NTN) and achieves technical effects similar to those in the TN scenario. In addition, adopting a unified solution for different scenarios helps to reduce the hardware complexity and cost.

[0005] As an embodiment, the interpretation of the terms in the present application refers to the definitions in the 3GPP specification protocol series TS38.

[0006] As an embodiment, the interpretation of the terms in the present application refers to the definitions in the 3GPP specification protocol series TS37.

[0007] It should be noted that, without conflict, the embodiments and features in the terminal of the present application can be applied to the base station. Without conflict, the embodiments and features in the base station of the present application can be applied to the terminal. Without conflict, the embodiments and features in the present application can be combined with each other arbitrarily.

[0008] The present application discloses a method applied to a terminal, characterized by including:

[0009] Receiving a first RRC message, where the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell;

[0010] Initiate a random access procedure; wherein, the random access procedure is initiated by a PDCCH order for the SpCell; the random access procedure includes:

[0011] Select a first random access resource group;

[0012] Transmit a Preamble and start the ra-ResponseWindow; wherein, the PDCCH order indicates the Preamble;

[0013] As a response to the expiration of the ra-ResponseWindow, increment the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the incremented PREAMBLE_TRANSMISSION_COUNTER is equal to the sum of preambleTransMax plus 1;

[0014] Wherein, as a response to the incremented PREAMBLE_TRANSMISSION_COUNTER being equal to the sum of the preambleTransMax plus 1, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means:

[0015] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0016] If at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0017] As an embodiment, the problems to be solved by the present application include: how to determine whether to indicate the random access problem to the higher layer; in the above method, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group, thus solving the above problems.

[0018] As an embodiment, the above method is beneficial to avoid unnecessary RLF.

[0019] As an embodiment, the above method is beneficial to improve the service continuity of the terminal.

[0020] As an embodiment, the above method is conducive to avoiding data interruption of the terminal.

[0021] According to one aspect of the present application, it is characterized in that

[0022] The first candidate random access resource group is associated with a first PCI, the second candidate random access resource group is associated with a second PCI, and the first PCI and the second PCI are different.

[0023] According to one aspect of the present application, it is characterized in that

[0024] Whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order; Whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order means that:

[0025] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0026] If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicate the random access problem to the higher layer;

[0027] If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, do not indicate the random access problem to the higher layer.

[0028] According to one aspect of the present application, it is characterized in that

[0029] The PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

[0030] The present application discloses a method used in a base station, which is characterized by including:

[0031] Send a first RRC message, and the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell;

[0032] Send a PDCCH order; wherein, the receiver of the first RRC message initiates a random access procedure; the random access procedure is initiated by the PDCCH order for the SpCell; the random access procedure includes:

[0033] Select a first random access resource group;

[0034] Send a Preamble and start the ra-ResponseWindow; wherein, the PDCCH order indicates the Preamble;

[0035] As a response to the expiration of the ra-ResponseWindow, increment the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the incremented PREAMBLE_TRANSMISSION_COUNTER is equal to the sum of preambleTransMax plus 1;

[0036] Wherein, as a response to the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax plus 1 being equal, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means:

[0037] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0038] If at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0039] According to one aspect of the present application, it is characterized in that

[0040] The first candidate random access resource group is associated with a first PCI, the second candidate random access resource group is associated with a second PCI, and the first PCI and the second PCI are different.

[0041] According to one aspect of the present application, it is characterized in that

[0042] Whether to indicate the random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order; Whether to indicate the random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order means that:

[0043] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0044] If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicate the random access problem to the higher layer;

[0045] If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, do not indicate the random access problem to the higher layer.

[0046] According to one aspect of the present application, it is characterized in that,

[0047] The PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

[0048] The present application discloses a terminal, which is characterized by including:

[0049] The terminal includes: one or more processors and a memory;

[0050] The memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the terminal to execute the method used in the terminal.

[0051] The present application discloses a base station, which is characterized by including:

[0052] The base station includes: one or more processors and a memory;

[0053] The memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the base station to execute the method used in the base station. Brief Description of the Drawings

[0054] Other features, objects, and advantages of the present application will become more apparent by reading the following detailed description of non - restrictive embodiments with reference to the accompanying drawings:

[0055] Figure 1 A flowchart showing the transmission of a terminal according to an embodiment of the present application;

[0056] Figure 2 A schematic diagram showing a network architecture according to an embodiment of the present application;

[0057] Figure 3 A schematic diagram showing an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0058] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application;

[0059] Figure 5 A flowchart showing the wireless signal transmission according to an embodiment of the present application;

[0060] Figure 6 A flowchart showing the wireless signal transmission according to another embodiment of the present application;

[0061] Figure 7 A schematic diagram showing a first candidate random access resource group and a second candidate random access resource group according to an embodiment of the present application;

[0062] Figure 8 A schematic diagram showing a PDCCH order indicating a first random access resource group according to an embodiment of the present application;

[0063] Figure 9 A block diagram showing the structure of a processing device in a terminal according to an embodiment of the present application;

[0064] Figure 10 A block diagram showing the structure of a processing device in a base station according to an embodiment of the present application. Detailed Description of the Embodiments

[0065] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined arbitrarily with each other.

[0066] Example 1

[0067] Example 1 illustrates a flowchart of the transmission of a terminal according to an embodiment of the present application, as shown in the attached Figure 1 figure. In the attached Figure 1 figure, each box represents a step. It should be particularly emphasized that the order of the boxes in the figure does not represent the temporal sequence between the represented steps.

[0068] In Example 1, in step 101 of the terminal in the present application, a first RRC message is received, and the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell; in step 102, a random access procedure is initiated; wherein, the random access procedure is initiated by a PDCCH order, and the PDCCH order is for the SpCell; the random access procedure includes: selecting a first random access resource group; sending a Preamble and starting a ra-ResponseWindow; wherein, the PDCCH order indicates the Preamble; in response to the expiration of the ra-ResponseWindow, the PREAMBLE_TRANSMISSION_COUNTER is incremented by 1; wherein, the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax incremented by 1 is equal; wherein, in response to the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax incremented by 1 being equal, whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depending on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that if the first random access resource group is the first candidate random access resource group, the random access problem is indicated to the higher layer; if the first random access resource group is the second candidate random access resource group, the random access problem is not indicated to the higher layer.

[0069] As an embodiment, the random access procedure is a CFRA (contention-free random access) procedure.

[0070] As an embodiment, the random access procedure is a CBRA (contention-based random access) procedure.

[0071] As an example, the equality between the incremented PREAMBLE_TRANSMISSION_COUNTER and the incremented preambleTransMax means that: PREAMBLE_TRANSMISSION_COUNTER = preambleTransMax + 1.

[0072] As an example, the SpCell is the PCell.

[0073] As an example, the SpCell is the PSCell.

[0074] As an example, the PDCCH order is a DCI.

[0075] As an example, the PDCCH order is a DCI of Format 1_0.

[0076] As an example, the PDCCH order includes a Random Access Preamble index field, and the Random Access Preamble index field indicates the index of the Preamble.

[0077] As an example, the terminal selects the first random access resource group according to the PDCCH order.

[0078] As an example, the terminal selects the first random access resource group according to the indication of the PDCCH order.

[0079] As an example, the terminal selects the first random access resource group according to the value of at least one field of the PDCCH order.

[0080] As an example, the first RRC message includes a common signaling and a dedicated signaling. The common signaling configures the first candidate random access resource group, and the dedicated signaling configures the second candidate random access resource group.

[0081] As a sub - example, the common signaling is the SIB1 message.

[0082] As a sub - example, the common signaling belongs to an SIB1 message.

[0083] As a sub - example, the common signaling belongs to a BWP - UplinkCommon IE.

[0084] As a sub - embodiment, the one common signaling is received through BCCH.

[0085] As a sub - embodiment, the one dedicated signaling is an RRCReconfiguration message.

[0086] As a sub - embodiment, the one dedicated signaling belongs to an RRCReconfiguration message.

[0087] As a sub - embodiment, the one dedicated signaling belongs to a ServingCellConfig IE.

[0088] As a sub - embodiment, the one dedicated signaling is received through DCCH.

[0089] As an embodiment, the first RRC message is a dedicated signaling.

[0090] As a sub - embodiment, the one dedicated signaling is an RRCReconfiguration message.

[0091] As a sub - embodiment, the one dedicated signaling belongs to an RRCReconfiguration message.

[0092] As a sub - embodiment, the one dedicated signaling belongs to a ServingCellConfig IE.

[0093] As a sub - embodiment, the one dedicated signaling is received through DCCH.

[0094] As an embodiment, the first candidate random access resource group is not associated with any feature indication.

[0095] As an embodiment, the first candidate random access resource group is associated with at least one feature indication.

[0096] As an embodiment, the at least one feature indication includes Msg1 repetition indication.

[0097] As an embodiment, the at least one feature indication includes RedCap indication.

[0098] As an embodiment, the at least one feature indication includes eRedCap indication.

[0099] As an example, the first candidate random access resource group does not correspond to any LTM candidate cell.

[0100] As an example, the first candidate random access resource group does not correspond to any additional PCI.

[0101] As an example, the first candidate random access resource group does not correspond to the additional PCI associated with the active TCI state.

[0102] As an example, the first candidate random access resource group does not correspond to any additional PCI and does not correspond to any LTM candidate cell.

[0103] As an example, the first candidate random access resource group does not correspond to the additional PCI associated with the active TCI state and does not correspond to any LTM candidate cell.

[0104] As an example, the second candidate random access resource group corresponds to an LTM candidate cell.

[0105] As an example, the second candidate random access resource group is a set of random access resources corresponding to an LTM candidate cell.

[0106] As an example, if the PDCCH order is for an LTM candidate cell, select the second candidate random access resource group; the second candidate random access resource group is a set of random access resources corresponding to the Cell indicator field in the PDCCH order.

[0107] As an example, the first candidate random access resource group does not correspond to an LTM candidate cell; the second candidate random access resource group corresponds to an LTM candidate cell.

[0108] As an example, the second candidate random access resource group corresponds to an additional PCI.

[0109] As an example, the second candidate random access resource group is a set of random access resources corresponding to the additional PCI associated with the active TCI state.

[0110] As an example, the second candidate random access resource group corresponds to an additional PCI or corresponds to an LTM candidate cell.

[0111] As an example, the second candidate random access resource group corresponds to the additional PCI associated with the active TCI state or corresponds to an LTM candidate cell.

[0112] As an example, if the PRACH association indicator field of the PDCCH order is set to 1 and the SSB-MTC-Additional PCI is configured by a higher layer, select the second candidate random access resource group; the second candidate random access resource group is the set of random access resources corresponding to the additional PCI associated with the active TCI state.

[0113] As an example, the first candidate random access resource group does not correspond to an additional PCI, and the second candidate random access resource group corresponds to an additional PCI.

[0114] As an example, the first candidate random access resource group does not correspond to an LTM candidate cell and the first candidate random access resource group does not correspond to an additional PCI; the second candidate random access resource group corresponds to an LTM candidate cell, or the second candidate random access resource group corresponds to an additional PCI.

[0115] As an example, the higher layer includes the RRC sublayer.

[0116] As an example, the higher layer is the RRC sublayer.

[0117] As an example, when the RRC sublayer receives the indication of the random access problem, it is considered that RLF is detected for the cell group to which the SpCell belongs.

[0118] As an example, the SpCell is a PCell, and the cell group to which the SpCell belongs is an MCG.

[0119] As an example, the SpCell is a PSCell, and the cell group to which the SpCell belongs is an SCG.

[0120] As an example, the terminal is configured with two TAGs.

[0121] As an example, the terminal is not configured with two TAGs.

[0122] As an example, whether to indicate the random access problem to the higher layer also depends on the network configuration.

[0123] As an example, whether to indicate the random access problem to a higher layer also depends on the UE capabilities of the terminal.

[0124] Example 2

[0125] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the appendix Figure 2 shown. Appendix Figure 2Describes the network architecture 200. The network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or the network architecture 200 is a 5G+ network architecture, or the network architecture 200 is a 6G network architecture, or the network architecture 200 is a network architecture that continues to evolve in the future by 3GPP; the network architecture 200 can be referred to as 5GS (5G System) / EPS (Evolved Packet System), or the network architecture 200 can be referred to as 6GS (6G System); the network architecture 200 includes at least one of UE (User Equipment) 201, RAN (Radio Access Network) 202, core network 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. The network architecture 200 can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the network architecture 200 provides packet-switched services. However, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks that provide circuit-switched services or other cellular networks. The RAN includes node 203 and other nodes 204. Node 203 provides termination of user and control plane protocols towards UE 201. Node 203 can be connected to other nodes 204 via the Xn interface (e.g., backhaul) / X2 interface. Node 203 can also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (Transmission and Reception Point), or some other suitable term. The core network 210 is a 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is a 6GC; node 203 provides an access point for UE 201 to the core network 210. Examples of UE 201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices.A person skilled in the art may also refer to the UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term. The node 203 is connected to the core network 210 through the S1 / NG interface. The core network 210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Date Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that processes the signaling between the UE 201 and the core network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, and the S-GW / UPF 212 is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet service 230. The Internet service 230 includes operator-corresponding Internet protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0126] As an embodiment, the UE 201 corresponds to the terminal in this application.

[0127] As an embodiment, the UE 201 is the terminal in this application.

[0128] As an embodiment, the UE 201 is a User Equipment (UE).

[0129] As an embodiment, the UE 201 is a Base Station (BS).

[0130] As an embodiment, the UE 201 is a Relay device.

[0131] As an example, the UE 201 is a gateway device.

[0132] As an example, the UE 201 supports LTM.

[0133] As an example, the UE 201 supports multi-TRP / m-TRP.

[0134] As an example, the node 203 corresponds to the base station in this application.

[0135] As an example, the node 203 is the base station in this application.

[0136] As an example, the node 203 is a base station device.

[0137] As an example, the node 203 is a relay device.

[0138] As an example, the node 203 is a gateway device.

[0139] Example 3

[0140] Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to this application, as shown in the appendix Figure 3 as follows. Figure 3 It is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for controlling plane 300 is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. The L1 layer will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and includes a MAC (Medium Access Control) sub-layer 302, an RLC (Radio Link Control) sub-layer 303, and a PDCP (Packet Data Convergence Protocol) sub-layer 304. The PDCP sub-layer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sub-layer 304 also provides security by encrypting data packets and provides handover support. The RLC sub-layer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for disordered reception due to HARQ (Hybrid Automatic Repeat Request). The MAC sub-layer 302 provides multiplexing between logical and transport channels. The MAC sub-layer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell. The MAC sub-layer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sub-layer 306 in Layer 3 (L3 layer) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling. The radio protocol architecture of the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). In the user plane 350, the radio protocol architecture is generally the same as the corresponding layers and sub-layers in the control plane 300 for the physical layer 351, the PDCP sub-layer 354 in the L2 layer 355, the RLC sub-layer 353 in the L2 layer 355, and the MAC sub-layer 352 in the L2 layer 355. However, the PDCP sub-layer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sub-layer 356, and the SDAP sub-layer 356 is responsible for mapping between QoS flows and data radio bearers (DRB, Data Radio Bearer) to support service diversity.

[0141] As an example, the Figure 3 radio protocol architecture in is applicable to the terminal described in this application.

[0142] As an example, the Figure 3The wireless protocol architecture in [reference] is applicable to the base station in this application.

[0143] As an example, the first RRC message in this application is generated by the RRC 306.

[0144] As an example, the PDCCH order in this application is generated by the PHY 301 or PHY 351.

[0145] As an example, the Preamble in this application is generated by the PHY 301 or PHY 351.

[0146] Example 4

[0147] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to this application, as shown in the appendix Figure 4 as follows. Figure 4 It is a block diagram of a first communication device 450 and a second communication device 410 that communicate with each other in an access network.

[0148] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454, and an antenna 452.

[0149] The second communication device 410 includes a controller / processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter / receiver 418, and an antenna 420.

[0150] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation for the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital space precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then uses the inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. Subsequently, the multi-antenna transmit processor 471 performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream and then provides it to different antennas 420.

[0151] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives signals via its respective antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier, and converts the radio frequency stream into a baseband multi-carrier symbol stream and provides it to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 perform various signal processing functions of the L1 layer. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receivers 454. The receive processor 456 uses the fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, where the reference signal will be used for channel estimation, and the data signal recovers any spatial streams destined for the first communication device 450 after multi-antenna detection in the multi-antenna receive processor 458. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. Subsequently, the receive processor 456 decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. Subsequently, the upper layer data and control signals are 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 referred to as a computer-readable medium. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. Subsequently, the upper layer data packets are provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0152] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, the data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function described at the second communication device 410 in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for the user plane and the control plane. The controller / processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing. The multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Subsequently, the transmit processor 468 modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, and after passing through the analog precoding / beamforming operation in the multi-antenna transmit processor 457, provides them to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and then provides it to the antenna 452.

[0153] In the transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the receive function described at the first communication device 450 in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the UE 450. The upper layer data packets from the controller / processor 475 may be provided to the core network.

[0154] As an example, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 is at least: receiving a first RRC message, the first RRC message configuring a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell; initiating a random access procedure; wherein, the random access procedure is initiated by a PDCCH order, the PDCCH order being for the SpCell; the random access procedure includes: selecting a first random access resource group; transmitting a Preamble and starting a ra-ResponseWindow; wherein, the PDCCH order indicates the Preamble; in response to the expiration of the ra-ResponseWindow, incrementing the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax incremented by 1 is equal; wherein, in response to the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax incremented by 1 being equal, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that: if the first random access resource group is the first candidate random access resource group, indicating the random access problem to the higher layer; if at least the first random access resource group is the second candidate random access resource group, not indicating the random access problem to the higher layer.

[0155] As an example, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving a first RRC message that configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell; initiating a random access procedure; wherein, the random access procedure is initiated by a PDCCH order for the SpCell; the random access procedure includes: selecting a first random access resource group; transmitting a Preamble and starting a ra-ResponseWindow; wherein, the PDCCH order indicates the Preamble; in response to the expiration of the ra-ResponseWindow, incrementing the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the incremented PREAMBLE_TRANSMISSION_COUNTER is equal to the sum of preambleTransMax plus 1; wherein, in response to the incremented PREAMBLE_TRANSMISSION_COUNTER being equal to the sum of preambleTransMax plus 1, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that: if the first random access resource group is the first candidate random access resource group, indicating the random access problem to the higher layer; if at least the first random access resource group is the second candidate random access resource group, not indicating the random access problem to the higher layer.

[0156] As an example, the second communication device 410 includes: at least one processor and at least one memory, and the at least one memory includes 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 second communication device 410 is at least configured to: send a first RRC message, where the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell; send a PDCCH order; wherein, the receiver of the first RRC message initiates a random access procedure; the random access procedure is initiated by the PDCCH order, and the PDCCH order is for the SpCell; the random access procedure includes: selecting a first random access resource group; sending a preamble and starting a ra-ResponseWindow; wherein, the PDCCH order indicates the preamble; in response to the expiration of the ra-ResponseWindow, increment the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax plus 1 is equal; wherein, in response to the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax plus 1 being equal, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that: if the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer; if at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0157] As an example, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: sending a first RRC message that configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell; sending a PDCCH order; wherein, the receiver of the first RRC message initiates a random access procedure; the random access procedure is initiated by the PDCCH order, and the PDCCH order is for the SpCell; the random access procedure includes: selecting a first random access resource group; sending a preamble and starting a ra-ResponseWindow; wherein, the PDCCH order indicates the preamble; in response to the expiration of the ra-ResponseWindow, increment the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax + 1 is equal; wherein, in response to the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax + 1 being equal, whether to indicate a random access problem to a higher layer depends on at least whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depending on at least whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that: if the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer; if at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0158] As an example, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the first RRC message.

[0159] As an example, at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send the first RRC message.

[0160] As an example, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive a PDCCH order.

[0161] As an example, at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a PDCCH order.

[0162] As an example, at least one of the antenna 452, the transmitter 454, the transmitting processor 468, and the controller / processor 459 is used to send a Preamble.

[0163] As an example, at least one of the antenna 420, the receiver 418, the receiving processor 470, and the controller / processor 475 is used to receive a Preamble.

[0164] As an example, the first communication device 450 corresponds to the terminal in the present application.

[0165] As an example, the first communication device 450 is the terminal in the present application.

[0166] As an example, the second communication device 410 corresponds to the base station in the present application.

[0167] As an example, the second communication device 410 is the base station in the present application.

[0168] Example 5

[0169] Embodiment 5 exemplifies a wireless signal transmission flowchart according to an embodiment of the present application, as shown in the appendix. Figure 5 Specifically, the order in this example does not limit the signal transmission order and the implementation order in the present application.

[0170] For Terminal U01, in step S5101, receive a first RRC message, where the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell; in step S5102, receive a PDCCH order; in step S5103, initiate a random access procedure; wherein, the random access procedure is initiated by the PDCCH order, and the PDCCH order is for the SpCell; in step S5104, select a first random access resource group; in step S5105, transmit a preamble; wherein, the PDCCH order indicates the preamble; in step S5106, start a ra-ResponseWindow; in step S5107, the ra-ResponseWindow expires; in step S5108, in response to the expiration of the ra-ResponseWindow, increment PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the incremented PREAMBLE_TRANSMISSION_COUNTER is equal to the sum of preambleTransMax incremented by 1; in step S5109, determine whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; if the first random access resource group is the first candidate random access resource group, indicate the random access problem to a higher layer and execute step S5110(a); if at least the first random access resource group is the second candidate random access resource group, do not execute step S5110(a); in step S5110(a), indicate the random access problem to a higher layer; in step S5110(b), consider that the random access procedure has not been successfully completed.

[0171] For Base Station N02 , in step S5201, transmit the first RRC message; in step S5202, transmit the PDCCH order; in step S5203, receive the preamble.

[0172] For Base Station N03 , in step S5301, transmit the PDCCH order; in step S5302, receive the preamble.

[0173] In Embodiment 5, in response to the sum of the PREAMBLE_TRANSMISSION_COUNTER to be incremented by 1 and the incremented preambleTransMax being equal, whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depending on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that:

[0174] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0175] If at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0176] As an embodiment, the terminal U01 is a UE.

[0177] As an embodiment, the terminal U01 is a relay.

[0178] As an embodiment, the terminal U01 is a test device.

[0179] As an embodiment, the base station N02 is a gNB.

[0180] As an embodiment, the base station N03 is a gNB.

[0181] As an embodiment, the base station N02 and the base station N03 belong to the same DU.

[0182] As an embodiment, the base station N02 and the base station N03 belong to the same CU.

[0183] As an embodiment, the base station N02 and the base station N03 belong to different DUs.

[0184] As an embodiment, the base station N02 and the base station N03 belong to different CUs.

[0185] As an embodiment, the base station N02 includes a TRP of the SpCell, and the base station N03 includes another TRP of the SpCell.

[0186] As an embodiment, the base station N02 is the serving base station of the SpCell, and the base station N03 is the serving base station of the LTM candidate cell of the SpCell.

[0187] As an embodiment, step S5110(b) exists.

[0188] As a sub - embodiment, if the first random access resource group is the first candidate random access resource group, it is considered that the random access procedure has not been successfully completed.

[0189] As an embodiment, step S5110(b) does not exist.

[0190] As a sub - embodiment, if at least the first random access resource group is the second candidate random access resource group, no action is performed.

[0191] The Figure 5 embodiments are not restrictive. In specific implementations, different implementation manners can be adopted to obtain equivalent or the same technical effects; further, step S5109 is not restrictive. In specific implementations, different implementation manners can be adopted to obtain equivalent or the same technical effects.

[0192] Example 6

[0193] Embodiment 6 exemplifies a wireless signal transmission flowchart according to another embodiment of the present application, as shown in the Figure 6 appendix. It should be specifically noted that the order in this example does not limit the signal transmission order and the implementation order in the present application.

[0194] For Terminal U01 , in step S6101, it is determined whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; if the first random access resource group is the first candidate random access resource group, the random access problem is indicated to the higher layer, and step S6102(a) is executed; if at least the first random access resource group is the second candidate random access resource group, step S6102(b) is executed; in step S6102(a), the random access problem is indicated to the higher layer; in step S6102(b), it is determined whether the spatial reception parameter of the PDCCH order is associated with the first PCI or the second PCI; if the spatial reception parameter of the PDCCH order is associated with the first PCI, step S6102(a) is executed; if the spatial reception parameter of the PDCCH order is associated with the second PCI, step S6103 is executed; in step S6103, it is considered that the random access procedure has not been successfully completed.

[0195] In Embodiment 6, the first candidate random access resource group is associated with a first PCI, and the second candidate random access resource group is associated with a second PCI, where the first PCI and the second PCI are different; whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order; whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order means that:

[0196] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0197] If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicate the random access problem to the higher layer;

[0198] If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, do not indicate the random access problem to the higher layer.

[0199] As an embodiment, the terminal U01 is a UE.

[0200] As an embodiment, the terminal U01 is a relay.

[0201] As an embodiment, the terminal U01 is a test device.

[0202] As an embodiment, the base station N02 is a gNB.

[0203] As an embodiment, the base station N03 is a gNB.

[0204] As an embodiment, the base station N02 and the base station N03 belong to the same DU.

[0205] As an embodiment, the base station N02 and the base station N03 belong to the same CU.

[0206] As an embodiment, the base station N02 and the base station N03 belong to different DUs.

[0207] As an embodiment, the base station N02 and the base station N03 belong to different CUs.

[0208] As an example, the base station N02 includes one TRP of the SpCell, and the base station N03 includes another TRP of the SpCell.

[0209] As an example, the base station N02 is the maintenance base station of the SpCell, and the base station N03 is the maintenance base station of the LTM candidate cell of the SpCell.

[0210] As an example, the spatial reception parameter of the PDCCH order refers to the DM-RS antenna port quasi co-location properties of the PDCCH order.

[0211] As an example, the spatial reception parameter of the PDCCH order refers to the CORESET for receiving the PDCCH order.

[0212] As an example, the spatial reception parameter of the PDCCH order refers to the TRP for receiving the PDCCH order.

[0213] As an example, the spatial reception parameter of the PDCCH order refers to the cell for receiving the PDCCH order.

[0214] As an example, the spatial reception parameter of the PDCCH order refers to the beam for receiving the PDCCH order.

[0215] As an example, the first PCI and the second PCI identify two different physical cells.

[0216] As an example, the first PCI is the PCI of the SpCell.

[0217] As an example, the first PCI is configured by the physCellId field in the ServingCellConfigCommon field of the SpCell.

[0218] As an example, the second PCI is an additional PCI of the SpCell.

[0219] As an example, the second PCI is the additional PCI associated with the active TCI state of the SpCell.

[0220] As an example, the second PCI is configured by an SSB-MTC-AdditionalPCI domain.

[0221] As an example, the second PCI is configured by an additionalPCI domain.

[0222] As an example, during the random access procedure, as a response to the Preamble being sent, the terminal detects DCI format 1_0 in which the CRC is scrambled by the RA-RNTI corresponding to the Preamble.

[0223] As an example, when the terminal detects DCI format 1_0 in which the CRC is scrambled by the RA-RNTI corresponding to the Preamble, the terminal may assume that the PDCCH containing the DCI format 1_0 and the PDCCH order have the same DM-RS antenna port quasi co-location properties.

[0224] As an example, when the terminal detects DCI format 1_0 in which the CRC is scrambled by the RA-RNTI corresponding to the Preamble, if the spatial reception parameters of the PDCCH order are associated with the first PCI, the terminal may assume that the PDCCH containing the DCI format 1_0 and the PDCCH order have the same DM-RS antenna port quasi co-location properties.

[0225] As an example, when the terminal detects DCI format 1_0 in which the CRC is scrambled by the RA-RNTI corresponding to the Preamble, if the spatial reception parameters of the PDCCH order are not associated with the first PCI, the terminal may assume that the DM-RS antenna port quasi co-location characteristics of the CORESET associated with the Type1-PDCCH CSS set are used for receiving the PDCCH containing the DCI format 1_0.

[0226] As an example, the fact that the spatial reception parameters of the PDCCH order are not associated with the first PCI means that the spatial reception parameters of the PDCCH order are associated with the second PCI.

[0227] As an example, the terminal is configured with two TAGs.

[0228] As an example, the terminal is configured with SSB-MTC-AddtionalPCI.

[0229] As an example, the terminal is not provided with a coresetPoolIndex.

[0230] As an example, the terminal is provided with a coresetPoolIndex with a value of 0 for the first CORESETs and a coresetPoolIndex with a value of 1 for the second CORESETs.

[0231] As an example, the step S6103 exists.

[0232] As a sub-example, if the first random access resource group is the first candidate random access resource group, it is considered that the random access procedure has not been successfully completed.

[0233] As an example, the step S6103 does not exist.

[0234] As a sub-example, if at least the first random access resource group is the second candidate random access resource group, no action is performed.

[0235] As an example, the attachment Figure 5 The step S5109 and subsequent steps in Figure 6 can be replaced by the step S6101 in

[0236] The attachment Figure 6 The implementation manner of

[0237] The attachment Figure 6 does not limit the execution order of the step S6101 and the step S6102(b). In specific implementation, the step S6101 and the step S6102(b) can be executed simultaneously, or the step S6101 can be before the step S6102(b), or the step S6101 can be after the step S6102(b), so as to obtain equivalent or the same technical effects.

[0238] Example 7

[0239] Example 7 exemplifies a schematic diagram of a first candidate random access resource group and a second candidate random access resource group according to an embodiment of the present application. As shown in the attachmentFigure 7 as shown

[0240] In Embodiment 7, the first candidate random access resource group is associated with a first PCI, the second candidate random access resource group is associated with a second PCI, and the first PCI and the second PCI are different.

[0241] As an embodiment, the first PCI and the second PCI identify two different physical cells.

[0242] As an embodiment, the first PCI is the PCI of the SpCell.

[0243] As an embodiment, the first PCI is configured by the physCellId field in the ServingCellConfigCommon field of the SpCell.

[0244] As an embodiment, the second PCI is an additional PCI of the SpCell.

[0245] As an embodiment, the second PCI is the additional PCI associated with the active TCI state of the SpCell.

[0246] As an embodiment, the second PCI is configured by an SSB-MTC-AdditionalPCI field.

[0247] As an embodiment, the second PCI is configured by an additionalPCI field.

[0248] As an embodiment, the second PCI is the PCI of an LTM candidate cell for the cell group to which the SpCell belongs.

[0249] As an embodiment, the second PCI is indicated by an LTM-Candidate IE.

[0250] As an embodiment, the second PCI is indicated by an ltm-CandidatePCI field.

[0251] As an embodiment, in the appendix Figure 5 and / or the appendix Figure 6 the base station N02 transmits an SSB indicating the first PCI, and the base station N03 transmits an SSB indicating the second PCI.

[0252] As an embodiment, in the appendix Figure 5 and / or the appendix Figure 6Among them, the base station N02 transmits CSI-RS indicating the first PCI, and the base station N03 transmits CSI-RS indicating the second PCI.

[0253] As an embodiment, in the appendix Figure 5 and / or the appendix Figure 6 Among them, the base station N02 transmits a reference signal indicating the first PCI, and the base station N03 transmits a reference signal indicating the second PCI.

[0254] As an embodiment, the first candidate random access resource group and the second candidate random access resource group are orthogonal.

[0255] As an embodiment, the first candidate random access resource group and the second candidate random access resource group partially overlap.

[0256] Example 8

[0257] Embodiment 8 exemplifies a schematic diagram of a PDCCH order indicating a first random access resource group according to an embodiment of the present application. As shown in the appendix Figure 8 as shown.

[0258] In Embodiment 8, the PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

[0259] As an embodiment, the PDCCH order includes a Cell indicator field. If the Cell indicator field is 0, the first random access resource group is the first candidate random access resource group; if the Cell indicator field is not 0, the first random access resource group is the second candidate random access resource group.

[0260] As an embodiment, the Cell indicator field being 0 indicates the SpCell; the Cell indicator field not being 0 indicates the LTM candidate cell of the Preamble.

[0261] As an embodiment, the PDCCH order includes a PRACH association indicator field. If the PRACH association indicator field is 0, the first random access resource group is the first candidate random access resource group; if the Cell indicator field is not 0, the first random access resource group is the second candidate random access resource group.

[0262] As an embodiment, when the one PRACH association indicator field is 0, it indicates the first PCI, and when the one PRACH association indicator field is 1, it indicates the second PCI; the first candidate random access resource group is associated with the first PCI, the second candidate random access resource group is associated with the second PCI, and the first PCI and the second PCI are different.

[0263] Example 9

[0264] Embodiment 9 exemplifies a structural block diagram of a processing device in a terminal according to an embodiment of the present application; as shown in the accompanying Figure 9 drawing. In the accompanying Figure 9 drawing, the processing device 900 in the terminal includes a first receiver 901 and a first processor 902.

[0265] The first receiver 901 receives a first RRC message, and the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein, both the first candidate random access resource group and the second candidate random access resource group are for the SpCell;

[0266] The first processor 902 initiates a random access procedure; wherein, the random access procedure is initiated by a PDCCH order, and the PDCCH order is for the SpCell; the random access procedure includes:

[0267] Selecting a first random access resource group;

[0268] Sending a preamble and starting a ra-ResponseWindow; wherein, the PDCCH order indicates the preamble;

[0269] As a response to the expiration of the ra-ResponseWindow, incrementing the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax incremented by 1 is equal;

[0270] In Embodiment 9, in response to the PREAMBLE_TRANSMISSION_COUNTER to be incremented being equal to the sum of the incremented preambleTransMax, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means that:

[0271] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0272] If at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0273] As an embodiment, the first candidate random access resource group is associated with a first PCI, the second candidate random access resource group is associated with a second PCI, and the first PCI and the second PCI are different.

[0274] As an embodiment, whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order; whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order means that: If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer; if the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicate the random access problem to the higher layer; if the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, do not indicate the random access problem to the higher layer.

[0275] As an embodiment, the PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

[0276] As an embodiment, the first processor 902 includes the first receiver 901.

[0277] As an embodiment, the first processor 902 includes a first transmitter.

[0278] As an embodiment, the first processor 902 includes the first receiver 901 and a first transmitter.

[0279] As an embodiment, the first receiver 901 includes the attached Figure 4 At least one of the antenna 452 or the receiver 454 or the multi-antenna receive processor 458 or the receive processor 456 or the controller / processor 459 or the memory 460 or the data source 467.

[0280] As an embodiment, the first receiver 901 includes the attached Figure 4 At least an antenna 452 and a receiver 454.

[0281] As an embodiment, the first transmitter includes the attached Figure 4 At least one of the antenna 452 or the transmitter 454 or the multi-antenna transmit processor 457 or the transmit processor 468 or the controller / processor 459 or the memory 460 or the data source 467.

[0282] As an embodiment, the first transmitter includes the attached Figure 4 At least antenna 452 and transmitter 454.

[0283] As an embodiment, the terminal includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the terminal to execute the method described in the present application that is used in the terminal.

[0284] Example 10

[0285] Embodiment 10 illustrates a structural block diagram of a processing device used in a base station according to an embodiment of the present application; Figure 10 As shown in the attached Figure 10 In the embodiment, the processing device 1000 in the base station includes a second transmitter 1001 and a second receiver 1002.

[0286] The second transmitter 1001 sends a first RRC message, wherein the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein the first candidate random access resource group and the second candidate random access resource group are both for SpCell;

[0287] The second transmitter 1001 sends a PDCCH order; wherein, the receiver of the first RRC message initiates a random access procedure; the random access procedure is initiated by the PDCCH order for the SpCell; the random access procedure includes:

[0288] Select a first random access resource group;

[0289] Send a preamble and start the ra-ResponseWindow; wherein, the PDCCH order indicates the preamble;

[0290] As a response to the expiration of the ra-ResponseWindow, increment the PREAMBLE_TRANSMISSION_COUNTER by 1; wherein, the incremented PREAMBLE_TRANSMISSION_COUNTER is equal to the sum of preambleTransMax plus 1;

[0291] In Embodiment 10, as a response to the sum of the incremented PREAMBLE_TRANSMISSION_COUNTER and preambleTransMax plus 1 being equal, whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate a random access problem to a higher layer depends at least on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group means:

[0292] If the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer;

[0293] If at least the first random access resource group is the second candidate random access resource group, do not indicate the random access problem to the higher layer.

[0294] As an embodiment, the preamble is received by the serving base station of the second PCI.

[0295] As an embodiment, the processing device 1000 in the base station includes a second receiver 1002.

[0296] As an embodiment, the second receiver 1002 receives the preamble.

[0297] As an example, the first candidate random access resource group is associated with a first PCI, the second candidate random access resource group is associated with a second PCI, and the first PCI is different from the second PCI.

[0298] As an example, whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order; whether to indicate a random access problem to a higher layer depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and the spatial reception parameter of the PDCCH order means that if the first random access resource group is the first candidate random access resource group, indicate the random access problem to the higher layer; if the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicate the random access problem to the higher layer; if the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, do not indicate the random access problem to the higher layer.

[0299] As an example, the PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

[0300] As an example, the second transmitter 1001 includes at least one of the antenna 420 or the transmitter 418 or the multi-antenna transmission processor 471 or the transmission processor 416 or the controller / processor 475 or the memory 476 in the appendix of this application. Figure 4

[0301] As an example, the second transmitter 1001 includes at least the antenna 420 and the transmitter 418 in the appendix of this application. Figure 4

[0302] As an example, the second receiver 1002 includes at least one of the antenna 420 or the receiver 418 or the multi-antenna reception processor 472 or the reception processor 470 or the controller / processor 475 or the memory 476 in the appendix of this application. Figure 4

[0303] As an example, the second receiver 1002 includes at least the antenna 420 and the receiver 418 in the appendix of this application. Figure 4

[0304] As an embodiment, the base station includes: one or more processors and a memory; the memory is coupled to the one or more processors, and the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to cause the base station to execute the method used in the base station in this application.

[0305] Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disc. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware form or in the form of a software functional module. This application is not limited to any specific form of the combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control airplanes, aircraft, small airplanes, mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0306] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method used in a terminal, characterized in that: include: Receiving a first RRC message, wherein the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein the first candidate random access resource group and the second candidate random access resource group are both for SpCell; Initiate a random access process; wherein the random access process is initiated by a PDCCH order, and the PDCCH order is for the SpCell; the random access process includes: Selecting a first random access resource group; Sending a Preamble and starting a ra-ResponseWindow; wherein the PDCCH order indicates the Preamble; In response to the expiration of the ra-ResponseWindow, the PREAMBLE_TRANSMISSION_COUNTER is incremented by 1; wherein the PREAMBLE_TRANSMISSION_COUNTER incremented by 1 is equal to the sum of the preambleTransMax incremented by 1; In which, as a response that the sum of the PREAMBLE_TRANSMISSION_COUNTER added by 1 is equal to the sum of the preambleTransMax added by 1, whether to indicate to a higher layer that the random access problem depends on at least the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate to a higher layer that the random access problem depends on at least the first random access resource group is the first candidate random access resource group or the second candidate random access resource group refers to: If the first random access resource group is the first candidate random access resource group, indicating the random access problem to the higher layer; If at least the first random access resource group is the second candidate random access resource group, not indicating the random access problem to the higher layer.

2. The method according to claim 1, characterized in that The first candidate random access resource group is associated with a first PCI, and the second candidate random access resource group is associated with a second PCI, and the first PCI and the second PCI are different.

3. The method according to claim 2, characterized in that Whether to indicate to a higher layer that a random access problem depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and a spatial reception parameter of the PDCCH order; whether to indicate to a higher layer that a random access problem depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and a spatial reception parameter of the PDCCH order refers to: If the first random access resource group is the first candidate random access resource group, indicating the random access problem to the higher layer; If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicating the random access problem to the higher layer; If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, the random access problem is not indicated to the higher layer.

4. The method according to any one of claims 1 to 3, characterized in that The PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

5. A terminal, characterized in that: The terminal includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the terminal to execute the method according to any one of claims 1 to 4.

6. A method used in a base station, characterized in that: include: Sending a first RRC message, wherein the first RRC message configures a first candidate random access resource group and a second candidate random access resource group; wherein the first candidate random access resource group and the second candidate random access resource group are both for SpCell; Sending a PDCCH order; wherein the receiver of the first RRC message initiates a random access process; the random access process is initiated by the PDCCH order, and the PDCCH order is for the SpCell; the random access process includes: Selecting a first random access resource group; Sending a Preamble and starting a ra-ResponseWindow; wherein the PDCCH order indicates the Preamble; In response to the expiration of the ra-ResponseWindow, the PREAMBLE_TRANSMISSION_COUNTER is incremented by 1; wherein the PREAMBLE_TRANSMISSION_COUNTER incremented by 1 is equal to the sum of the preambleTransMax incremented by 1; In which, as a response that the sum of the PREAMBLE_TRANSMISSION_COUNTER added by 1 is equal to the sum of the preambleTransMax added by 1, whether to indicate to a higher layer that the random access problem depends on at least the first random access resource group is the first candidate random access resource group or the second candidate random access resource group; whether to indicate to a higher layer that the random access problem depends on at least the first random access resource group is the first candidate random access resource group or the second candidate random access resource group refers to: If the first random access resource group is the first candidate random access resource group, indicating the random access problem to the higher layer; If at least the first random access resource group is the second candidate random access resource group, not indicating the random access problem to the higher layer.

7. The method according to claim 6, characterized in that The first candidate random access resource group is associated with a first PCI, and the second candidate random access resource group is associated with a second PCI, and the first PCI and the second PCI are different.

8. The method according to claim 7, characterized in that Whether to indicate to a higher layer that a random access problem depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and a spatial reception parameter of the PDCCH order; whether to indicate to a higher layer that a random access problem depends on whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group and a spatial reception parameter of the PDCCH order refers to: If the first random access resource group is the first candidate random access resource group, indicating the random access problem to the higher layer; If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the first PCI, indicating the random access problem to the higher layer; If the first random access resource group is the second candidate random access resource group and the spatial reception parameter of the PDCCH order is associated with the second PCI, the random access problem is not indicated to the higher layer.

9. The method according to any one of claims 6 to 8, characterized in that: The PDCCH order indicates whether the first random access resource group is the first candidate random access resource group or the second candidate random access resource group.

10. A base station, characterized in that: The base station includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the base station to perform the method according to any one of claims 6 to 9.

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