Wireless communication method and communication device

Abstract

The present application provides a wireless communication method and a communication device, which can reduce the delay of EDT of a terminal device. The method includes: receiving first information sent by a first cell, the first information includes multiple pre-configured uplink resource PUR configurations for multiple cells, the multiple cells include a second cell; determining a first PUR configuration corresponding to the second cell from the multiple PUR configurations; based on the first PUR configuration, performing early data transmission with the second cell.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a wireless communication method and a communication device. Background Art

[0002] In order to increase uplink capacity and reduce the latency of uplink data transmission by terminal devices, the preconfigured uplink resource (PUR) mechanism is introduced. Terminal devices can perform early data transmission (EDT) with network devices based on PUR without random access.

[0003] In order to improve resource utilization, a PUR configuration based on the cell granularity is introduced, and the terminal device can use the PUR configuration in a competitive manner. This PUR configuration can also be called contention-based shared pre-configured uplink resource (CBS-PUR) configuration. After selecting or reselecting a cell, the terminal device can receive the PUR configuration sent by the cell and perform EDT with the cell based on the PUR configuration. However, this method has the problem of large EDT delay. Summary of the invention

[0004] The present application provides a wireless communication method and a communication device, which can reduce the delay of EDT of a terminal device.

[0005] In a first aspect, a wireless communication method is provided, comprising: receiving first information sent by a first cell, the first information comprising multiple pre-configured uplink resource PUR configurations for multiple cells, the multiple cells including a second cell; determining a first PUR configuration corresponding to the second cell from the multiple PUR configurations; and performing early data transmission with the second cell based on the first PUR configuration.

[0006] Based on the above technical solution, the terminal device can receive the PUR configuration for the second cell from the first cell. After the terminal device selects the second cell, the terminal device can directly use the previously received PUR configuration for the second cell to perform EDT with the second cell, thereby reducing the time interval between the terminal device selecting the second cell and performing EDT with the second cell, which is beneficial to reducing the delay of EDT.

[0007] In some implementations, the first information includes the multiple PUR configurations and the indexes of the multiple PUR configurations, and determining the first PUR configuration corresponding to the second cell from the multiple PUR configurations includes: determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell.

[0008] By carrying the PUR configuration and the index of the PUR configuration in the first information, only the PUR configuration index corresponding to the cell can be indicated to the terminal device later, so that the terminal device can determine the PUR configuration corresponding to the cell, which is conducive to reducing the complexity of the terminal device determining the PUR configuration. In addition, since the PUR configuration usually occupies more bits, the PUR configuration and the index of the PUR configuration are carried in the first information, and the content of these information usually does not change, so there is no need to update the first information carrying a large amount of information, which is conducive to reducing signaling overhead.

[0009] In some implementations, before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the method further includes: receiving second information sent by the first cell, the second information being used to indicate the index of the PUR configuration corresponding to the second cell.

[0010] In this way, if the network device wants to change the PUR configuration corresponding to the second cell, it only needs to update the second information carrying less information, without updating the first information carrying a large amount of information, which is helpful to reduce signaling overhead and improve the flexibility of the network device in allocating PUR configuration for the second cell.

[0011] In some implementations, if the frequency used by the second cell is the same as the frequency used by the first cell, the second information is carried in the system information block SIB4; or if the frequency used by the second cell is different from the frequency used by the first cell, the second information is carried in SIB5.

[0012] If the frequency used by the second cell is the same as that used by the first cell, since SIB4 includes relevant information of the same-frequency neighboring cells (such as list information of the same-frequency neighboring cells), SIB4 usually includes identification information of the second cell. The second information is carried in SIB4, and the identification information of the second cell in SIB4 can be reused to establish a correspondence between the second cell and the first index, thereby reducing signaling overhead.

[0013] If the frequency used by the second cell is different from the frequency used by the first cell, since SIB5 includes relevant information of inter-frequency neighboring cells (such as list information of inter-frequency neighboring cells), SIB5 usually includes identification information of the second cell. The second information is carried in SIB5, and the identification information of the second cell in SIB5 can be reused to establish a correspondence between the second cell and the PUR configuration index, thereby reducing signaling overhead.

[0014] In some implementations, before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the method also includes: determining whether the PUR configuration corresponding to the base station to which the second cell belongs is stored locally; if the PUR configuration corresponding to the base station to which the second cell belongs is stored locally, then determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell includes: determining the first PUR configuration corresponding to the second cell based on the index of the PUR configuration corresponding to the second cell and a first correspondence, the first correspondence being a correspondence between an identifier of the cell, the base station to which the cell belongs, and an index of the PUR configuration corresponding to the cell.

[0015] The terminal device in the embodiment of the present application can judge the locally stored PUR configuration. If the PUR configuration corresponding to the base station to which the second cell belongs is stored locally, the terminal device can give priority to using the locally stored first corresponding relationship to determine the first PUR configuration to reduce the delay of EDT with the second cell.

[0016] In some implementations, before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the method also includes: receiving third information sent by the second cell, the third information being used to indicate the index of the PUR configuration corresponding to the second cell.

[0017] The terminal device in the embodiment of the present application can determine the first PUR configuration according to the index of the PUR configuration corresponding to the second cell indicated by the second cell, so that when the correspondence between the second cell and the PUR configuration changes, the updated correspondence can be obtained in time to determine the accurate first PUR configuration, so as to improve the success rate of uplink transmission.

[0018] In some implementations, the third information is carried in one or more of the following messages: SIB2, SIB31, and SIB32.

[0019] Typically, SIB2, SIB31 and SIB32 may include configuration information of the service cell. The third information is carried in one or more of SIB2, SIB31 and SIB32. The identification information of the second cell (the second cell is the service cell) in SIB2, SIB31 and SIB32 may be reused to establish a correspondence between the second cell and the first index, thereby reducing signaling overhead.

[0020] In some implementations, the receiving the third information sent by the second cell includes: if the index of the PUR configuration corresponding to the second cell is not stored locally, receiving the third information sent by the second cell.

[0021] In some implementations, the first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the method further includes: receiving fourth information sent by the first cell, where the fourth information is used to indicate the index of the PUR configuration corresponding to the first cell.

[0022] In this way, if the network device wants to change the PUR configuration corresponding to the first cell, it only needs to update the fourth information carrying less information, without updating the first information carrying a large amount of information, which is helpful to reduce signaling overhead and improve the flexibility of the network device in allocating PUR configuration for the first cell.

[0023] By sending the fourth information to the terminal device, when the terminal device selects or reselects the first cell again, it can directly determine the PUR configuration corresponding to the first cell according to the index of the PUR configuration corresponding to the first cell, so as to perform EDT with the first cell, thereby reducing the delay of EDT between the terminal device and the first cell.

[0024] In some implementations, the fourth information is carried in one or more of the following messages: SIB2, SIB31, and SIB32.

[0025] Typically, SIB2, SIB31 and SIB32 may include configuration information of the service cell. The fourth information is carried in one or more of SIB2, SIB31 and SIB32. The identification information of the first cell (the first cell is the service cell) in SIB2, SIB31 and SIB32 may be reused to establish a correspondence between the first cell and the PUR configuration index, thereby reducing signaling overhead.

[0026] In some implementations, the indexes of multiple PUR configurations corresponding to one base station are different, or the indexes of multiple PUR configurations corresponding to one public land mobile network PLMN are different, or the indexes of multiple PUR configurations corresponding to one tracking area code TAC are different.

[0027] If the indexes of multiple PUR configurations corresponding to one base station are different, the indexes of PUR configurations corresponding to different base stations may be the same. For example, the indexes of multiple PUR configurations corresponding to different base stations may be numbered starting from 0, which can reduce the complexity of the network device setting the index of the PUR configuration.

[0028] The indexes of multiple PUR configurations corresponding to one PLMN are different. Since one PLMN can correspond to multiple base stations, the indexes of PUR configurations corresponding to multiple base stations are different, which can reduce the complexity of establishing the corresponding relationship for the terminal device.

[0029] The indexes of multiple PUR configurations corresponding to one TAC are different. Since one TAC can correspond to multiple base stations, the indexes of PUR configurations corresponding to multiple base stations are different, which can reduce the complexity of establishing the corresponding relationship for the terminal device.

[0030] In some implementations, the first information is carried in a dedicated SIB. By carrying the first information in a dedicated SIB, it is possible to avoid the transmission of the PUR configuration from affecting other broadcast messages.

[0031] In some implementations, the dedicated SIB is sent as a periodic broadcast.

[0032] In some implementations, the priority of the dedicated SIB is lower than that of SIB1 and / or SIB2. This approach is to avoid the transmission of the dedicated SIB affecting the transmission of SIB1 and / or SIB2, thereby affecting the access of the terminal device.

[0033] In a second aspect, a wireless communication method is provided, comprising: sending first information to a terminal device, the first information comprising multiple pre-configured uplink resource PUR configurations for multiple cells, the multiple cells including a second cell, the multiple PUR configurations including a first PUR configuration corresponding to the second cell, the first PUR configuration being used for early data transmission between the terminal device and the second cell.

[0034] In some implementations, the first information includes the plurality of PUR configurations and indexes of the plurality of PUR configurations.

[0035] In some implementations, the method further includes: sending second information to the terminal device, where the second information is used to indicate an index of a PUR configuration corresponding to the second cell.

[0036] In some implementations, if the frequency used by the second cell is the same as the frequency used by the first cell, the second information is carried in the system information block SIB4; or if the frequency used by the second cell is different from the frequency used by the first cell, the second information is carried in SIB5.

[0037] In some implementations, the first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the method further includes: sending fourth information to the terminal device, where the fourth information is used to indicate the index of the PUR configuration corresponding to the first cell.

[0038] In some implementations, the fourth information is carried in one or more of the following messages: SIB2, SIB31, and SIB32.

[0039] In some implementations, the indexes of multiple PUR configurations corresponding to one base station are different, or the indexes of multiple PUR configurations corresponding to one public land mobile network PLMN are different, or the indexes of multiple PUR configurations corresponding to one tracking area code TAC are different.

[0040] In some implementations, the first information is carried in a dedicated SIB.

[0041] In some implementations, the dedicated SIB is sent as a periodic broadcast.

[0042] In some implementations, the dedicated SIB has a lower priority than SIB1 and SIB2.

[0043] In a third aspect, a communication device is provided, comprising a unit (or module) composed of software and / or hardware, wherein the unit is used to execute any one of the methods in the technical solution described in the first aspect.

[0044] In a fourth aspect, a communication device is provided, comprising a unit (or module) composed of software and / or hardware, wherein the unit is used to execute any one of the methods in the technical solution described in the second aspect.

[0045] In a fifth aspect, a chip is provided, comprising a processor; the processor is used to read and execute a computer program stored in a memory to execute any one of the methods in the technical solution described in the first aspect.

[0046] Optionally, the chip also includes a memory, and the memory is connected to the processor via a circuit or wire.

[0047] Further optionally, the chip also includes a communication interface.

[0048] In a sixth aspect, a chip is provided, comprising a processor; the processor is used to read and execute a computer program stored in a memory to execute any one of the methods in the technical solution described in the second aspect.

[0049] Optionally, the chip also includes a memory, and the memory is connected to the processor via a circuit or wire.

[0050] Further optionally, the chip also includes a communication interface.

[0051] In the seventh aspect, a terminal device is provided, comprising: a processor, a memory and an interface; the processor, the memory and the interface cooperate with each other so that the terminal device executes any one of the methods in the technical solution described in the first aspect; or comprises any one of the chips described in the fifth aspect.

[0052] In the eighth aspect, a network device is provided, comprising: a processor, a memory and an interface; the processor, the memory and the interface cooperate with each other so that the network device executes any one of the methods in the technical solution described in the second aspect; or comprises any one of the chips described in the sixth aspect.

[0053] In the ninth aspect, a computer-readable storage medium is provided, in which a computer program is stored. When the computer program is executed by a processor, the processor executes any one of the methods in the technical solutions described in the first aspect or the second aspect.

[0054] In the tenth aspect, a computer program product is provided, wherein the computer program product comprises: a computer program code, and when the computer program code runs on a communication device, the communication device executes any one of the methods in the technical solutions described in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application;

[0056] Figure 2 A method of using a dedicated PUR and a shared PUR is shown;

[0057] Figure 3 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application;

[0058] Figure 4 It is a code diagram of a dedicated SIB for carrying PUR configuration provided by an embodiment of the present application;

[0059] Figure 5 This is a code diagram of a SIB2 for carrying a PUR configuration index corresponding to a serving cell provided in an embodiment of the present application;

[0060] Figure 6 This is a code diagram of SIB4 for carrying a PUR configuration index corresponding to a co-frequency neighboring cell provided in an embodiment of the present application;

[0061] Figure 7 This is a code diagram of SIB5 for carrying a PUR configuration index corresponding to an inter-frequency neighboring cell provided in an embodiment of the present application;

[0062] Figure 8 is a schematic diagram of a method for determining PUR configuration provided in an embodiment of the present application;

[0063] Fig. 9 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0064] Fig.10 is a schematic block diagram of another communication device provided in an embodiment of the present application;

[0065] Fig.11 It is a structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 10 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (such as Figure 1 110a and 110b in the figure, collectively referred to as 110), may also include at least one terminal device (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 The terminal device 120 is connected to the RAN node 110 in a wireless manner. Terminal devices and terminal devices and RAN nodes and RAN nodes can be connected to each other by wire or wireless means. The communication system 10 may also include a core network 200. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or may be the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node. The communication system 10 may also include the Internet 300.

[0067] RAN 100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, and a future radio access system defined in the 3rd generation partnership project (3GPP). RAN 100 may also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. RAN 100 may also include two or more of the above different radio access systems.

[0068] RAN nodes, also known as radio access network equipment, RAN entities or access nodes, are used to help terminal devices access the communication system wirelessly. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a fifth generation (5G) mobile communication system, a next generation NodeB in a sixth generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as a Figure 1 110a in the figure), or a micro base station or an indoor station (such as Figure 1 110b in the figure), it can also be a relay node or a donor node.

[0069] In another application scenario, the cooperation of multiple RAN nodes can help terminal devices achieve wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the relevant technical specifications of 3GPP. RU can be used to implement the transceiver function of the radio frequency signal. CU and DU can be two independent RAN nodes, or they can be integrated in the same RAN node, such as integrated in the baseband unit (BBU). The RU may be included in a radio frequency device, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU may be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0070] In different systems, RAN nodes may have different names. For example, in an O-RAN system, CU may be called an open CU (open CU, O-CU), DU may be called an open DU (open DU, O-DU), and RU may be called an open RU (open RU, O-RU). The RAN node in the embodiment of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with a corresponding software module. The embodiment of the present application does not limit the specific technology and specific device form adopted by the RAN node. For the convenience of description, the following description takes a base station as an example of a RAN node.

[0071] The terminal device is a device with wireless transceiver function, which can send signals to the base station or receive signals from the base station. The terminal device can also be called a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0072] Base stations and terminal devices can be fixed or mobile. Base stations and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminal devices.

[0073] The roles of base stations and terminal devices can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal devices 120j that access the wireless access network 100 through 120i, 120i is a base station; but for the base station 110a, 120i is a terminal device, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminal devices can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0074] Base stations and terminal devices, base stations and base stations, and terminal devices and terminal devices can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0075] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station functions. The control subsystem including the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, smart city, etc. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or by a device including the terminal device functions.

[0076] After the terminal device is turned on, it first needs to read the system information of the cell before it can perform operations such as cell selection, reselection, public land mobile network (PLMN) selection, etc. The following is an introduction to the system information.

[0077] System information mainly includes master information block (MIB) and multiple system information blocks (SIB). SIB mainly includes SIB1 and other SIBs. Among them, MIB and SIB1 are broadcast periodically, and other SIBs can be broadcast periodically or sent according to the request of the terminal device (on-demand).

[0078] MIB messages include basic information required for terminal devices to access the network. For example, MIB messages may include one or more of the following information: system frame number (SFN), bandwidth configuration, subcarrier spacing, and physical downlink control channel (PDCCH) configuration. SFN is the time structure for the terminal device to synchronize to the network. Bandwidth configuration is used to indicate the bandwidth configuration of the current carrier. Subcarrier spacing is used to indicate the subcarrier spacing used by the physical layer. PDCCH configuration includes configuration information of PDCCH to help terminal devices find the control channel. In addition, MIB may include necessary information for the physical layer to receive subsequent SIBs, such as control resource set (CORESET) configuration.

[0079] SIB1 may include scheduling information and initial access information of other SIBs, and the initial access information may include basic information related to cell access (or cell selection). For example, SIB1 may include a PLMN identifier, cell reselection parameters, and system information scheduling information.

[0080] SIB2 includes cell reselection information of the serving cell. For example, SIB2 may include conventional configurations of the radio resource control (RRC) layer, including configuration information of the paging control channel, configuration information of the random access channel (RACH), time domain allocation information, and power control information.

[0081] SIB3 includes common information for cell reselection, such as thresholds.

[0082] SIB4 includes information about a list of co-frequency neighbor cells, which are neighbor cells with the same frequency as the serving cell.

[0083] SIB5 includes information on a list of inter-frequency neighbor cells, where the frequency of the neighbor cell is different from that of the serving cell.

[0084] SIB6 includes heterogeneous universal terrestrial radio access (UTRA) neighbor cell list information.

[0085] SIB7 includes the neighbor list information of the GSM / EDGE radio access network (GERAN) of the different systems. GSM stands for global system for mobile communication, and EDGE stands for enhanced data rate for GSM evolution.

[0086] SIB8 includes the neighboring cell information of different system code division multiple access (CDMA).

[0087] SIB9 includes information on the global positioning system (GPS) time and coordinated universal time (UTC).

[0088] SIB10 / 11 includes earthquake and tsunami warning system (ETWS) information.

[0089] SIB12 includes commercial mobile alert system (CMAS) information.

[0090] SIB31 includes satellite assistance information of the serving cell, which is broadcast only in non terrestrial network (NTN) cells.

[0091] SIB32 includes satellite assistance information for non-contiguous coverage prediction, which is broadcast only in NTN cells.

[0092] SIB33 includes satellite assistance information for neighboring cells.

[0093] In some communication systems, terminal devices in the RRC idle state and the RRC inactive state need to enter the RRC connected state through a random access process before they can send uplink data and / or receive downlink data. However, for small data packets, since the data packets are small, if data transmission is still performed in the above manner, the signaling overhead required for random access will be much greater than the signaling overhead required for transmitting data packets. In other words, this data transmission mechanism will result in a large RRC signaling overhead and a large energy consumption of the terminal device. In order to solve the above problems, an early data transmission (EDT) mechanism is introduced in some systems (such as IoT systems or narrowband systems). For terminal devices in the RRC idle state and the RRC inactive state, the terminal device does not need to enter the RRC connected state, but can directly transmit data with the network device.

[0094] In some implementations, the network device may configure a dedicated PUR to the terminal device through dedicated signaling. The dedicated signaling may be an RRC release signaling. The PUR configured through dedicated signaling may also be referred to as a dedicated PUR (DPUR).

[0095] After configuring PUR, terminal devices in RRC idle state and RRC inactive state do not need to initiate random access, but can directly use PUR to send uplink data to the network device. PUR can indicate the timing of PRACH, and the terminal device can send uplink data during the timing indicated by PUR. The PRACH in the embodiment of the present application can be a narrowband PRACH (narrowband PRACH, NPRACH).

[0096] The PUR configuration received through dedicated signaling can only be used in a specific cell. For example, the PUR configuration received by the terminal device from cell 1 can only be used for EDT with cell 1; the PUR configuration received by the terminal device from cell 2 can only be used for EDT with cell 2.

[0097] After the terminal device receives the dedicated PUR configuration sent by cell 1, it can perform random access-free uplink transmission with cell 1 during the subsequent idle state and inactive state if it is still within the coverage of cell 1 and the measured reference signal receiving power (RSRP) change value is less than or equal to the preset value.

[0098] In some implementations, the network device may further configure a PUR search space window (PUR SS window) for the terminal device. The terminal device may detect a downlink message sent by the network device within the PUR SS window. The downlink message may include, for example, one or more of an acknowledgement (ACK), a fall back indication, and retransmission scheduling information.

[0099] The PUR involved in the embodiment of the present application may be a periodic PUR, or may be a semi-static PUR or a non-periodic PUR.

[0100] With the development of technology, new communication systems have been introduced, such as the NTN communication system. The NTN communication system is introduced below.

[0101] The NTN communication system provides communication services to users in a non-terrestrial manner, such as a satellite or unmanned aircraft system (UAS) platform.

[0102] For terrestrial network communications, it is impossible to set up communication equipment in scenarios such as oceans, mountains, and deserts. Or, considering the cost of setting up and operating communication equipment, terrestrial communications usually do not cover sparsely populated areas. Compared with terrestrial network (TN) communications, NTN has many advantages. First, NTN communications are not restricted by the user's region. For NTN communication networks, there are no geographical restrictions. In theory, satellites can orbit the earth, so every corner of the earth can be covered by satellite communications. In addition, the area that NTN communication equipment can cover is much larger than the area covered by terrestrial communication equipment. For example, in satellite communications, a satellite can cover a large ground area. Secondly, NTN communications have great social value. NTN communications can achieve coverage at a lower cost. For example, satellite communications can cover remote mountainous areas or poor and backward countries or regions at a lower cost. This can enable people in these areas to enjoy advanced voice communications and mobile Internet technologies, which is conducive to narrowing the digital divide with developed areas and promoting the development of these areas. Thirdly, NTN communications have a long communication distance and do not significantly increase the cost of communications. In addition, NTN communications have high stability. For example, NTN communications are not restricted by natural conditions and can be used even in the event of a natural disaster.

[0103] According to the different orbital altitudes, communication satellites can be divided into low-earth orbit (LEO) satellites, medium-earth orbit (MEO) satellites, geostationary earthorbit (GEO) satellites, high elliptical orbit (HEO) satellites, etc.

[0104] In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, the satellite can use multiple beams to cover the ground, that is, multiple beam foot prints can form a satellite coverage area (field ofview of the satellite). For example, a satellite can form dozens or even hundreds of beams to cover the ground. Among them, a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0105] Satellites have a large coverage area, and usually use beams to divide cells, with one beam corresponding to one cell. As satellites move constantly, terminal devices will reselect or switch between different beams (or cells). Terminal devices need to constantly switch from one cell to another.

[0106] With the development of technology, people have higher and higher demands on the uplink capacity of IoT NTN communication systems. Therefore, it is necessary to enhance the uplink capacity of IoT NTN communication systems. In particular, for the transmission enhancement of small data packets, people hope to further reduce the uplink and downlink signaling overhead based on the existing EDT mechanism. The enhancement methods can include the following two:

[0107] 1. Directly transmit Msg3 without transmitting Msg1 and Msg2;

[0108] 2. More efficient transmission of Msg4 or RRC Early Data Complete (RRCEarlyDataComplete) message.

[0109] A CBS-PUR mechanism is proposed for NTN communication scenarios. For example, a group of PURs can be configured for terminal devices in a cell, and the group of PURs is shared by the terminal devices in the cell. The terminal devices in the cell can use the group of PURs in a competitive manner.

[0110] The CBS-PUR in the embodiment of the present application may be based on the cell granularity. For example, cell 1 may configure CBS-PUR for terminal devices in cell 1, and the terminal devices in cell 1 may use the CBS-PUR in a competitive manner. Cell 2 may configure CBS-PUR for terminal devices in cell 2, and the terminal devices in cell 2 may use the CBS-PUR in a competitive manner.

[0111] Figure 2 A method of using a dedicated PUR and a shared PUR is shown.

[0112] For the DPUR sent to UE1 through dedicated signaling, only UE1 can use the DPUR to send uplink data, which can be periodic data. For CBS-PUR, UE1, UE2 and UE3 can use the CBS-PUR in a competitive manner. Figure 2 As shown, UE3 can use CBS-PUR to send uplink data (UL data), and UE2 can use CBS-PUR to send alarm reporting (alarm reporting).

[0113] One way to send CBS-PUR is broadcasting. For example, a network device can broadcast CBS-PUR to a terminal device through SIB. However, there is no clear solution on how to design CBS-PUR in SIB, or how to carry CBS-PUR in SIB.

[0114] After selecting or reselecting a cell (such as cell 1), the terminal device obtains the PUR by receiving the SIB sent by cell 1, and performs EDT with cell 1 based on the PUR. Since it takes a certain amount of time for the terminal device to select cell 1 and obtain the PUR sent by cell 1, this method will cause a large EDT delay. Especially for the NTN communication system, the EDT delay will be even greater.

[0115] For example, due to the narrow bandwidth of the NTN communication system and limited downlink broadcast channel resources, SIB may not be able to be sent in one broadcast channel. If SIB needs to be sent multiple times, the terminal device needs to receive multiple SIBs to obtain a complete PUR, which increases the time it takes for the terminal device to select a cell and obtain the PUR of the cell, further increasing the EDT delay.

[0116] In view of the above problems, the embodiments of the present application provide a wireless communication method and a communication device, which can reduce the delay of the terminal device performing EDT. The terminal device can receive a PUR configuration for the second cell from the first cell. After the terminal device selects the second cell, the terminal device does not need to receive the PUR configuration from the second cell, but can directly use the previously received PUR configuration for the second cell to perform EDT with the second cell, thereby reducing the time interval between the terminal device selecting the second cell and performing EDT with the second cell, which is conducive to reducing the delay of EDT.

[0117] In some implementations, each cell may send the PUR configuration corresponding to the cell and the PUR configuration corresponding to the neighboring cell. For example, the first cell may send the PUR configuration corresponding to multiple cells, including the first cell and cells adjacent to the first cell.

[0118] The cell in the embodiment of the present application may be a cell in a terrestrial communication system or a cell in an NTN communication system (or an IoT-NTN communication system), and the embodiment of the present application does not specifically limit this.

[0119] The PUR configuration in the embodiment of the present application may indicate the time domain position and / or frequency domain position of the uplink resource, or in other words, the PUR configuration may include configuration parameters of the uplink resource. Therefore, the PUR configuration in the embodiment of the present application may also be replaced by a PUR configuration parameter or a PUR parameter.

[0120] In some implementations, the cell may send the PUR configuration by broadcasting. For example, the PUR configuration may be carried in a SIB. The SIB may be a dedicated SIB, or a newly added SIB. The SIB may be, for example, SIB3x. The priority of the dedicated SIB is lower, for example, the priority of the dedicated SIB is lower than the priority of SIB1 and the priority of SIB2. Since SIB1 is a SIB that the terminal device must receive before camping on the cell, and SIB2 includes wireless resource configuration related to random access, SIB1 and SIB2 are relatively important broadcast messages, and the priority of SIB1 and SIB2 is set to be higher than the priority of the dedicated SIB to avoid the transmission of the dedicated SIB affecting the transmission of SIB1 and SIB2, thereby affecting the access of the terminal device.

[0121] In some implementations, each cell broadcasts multiple PUR configurations corresponding to the cell and neighboring cells on the low-priority SIB3x, and only broadcasts the index of the PUR configuration corresponding to the serving cell on the high-priority SIB2, and adds the index of the PUR configuration corresponding to the neighboring cell to be measured in the SIB (such as SIB3, SIB4, SIB5 or SIB33) that broadcasts information such as neighboring cell measurements.

[0122] In some implementations, the multiple PUR configurations in the embodiments of the present application may also be replaced by multiple groups of PUR configurations.

[0123] The index of the PUR configuration in the embodiment of the present application may be a newly defined index, or may reuse the identifier of a dedicated PUR configuration in the related art. For example, the index of the PUR configuration may be PUR-ConfigID-NB in ​​PUR-Config-NB-r16.

[0124] After receiving the PUR configuration, the terminal device can save the PUR configuration so that when a cell is subsequently selected or reselected to reside, it does not need to receive the PUR configuration sent by the resident cell, but can directly initiate the EDT process to the resident cell based on the previously received PUR configuration.

[0125] In some implementations, taking the first cell as an example, the first cell may send a PUR configuration corresponding to multiple cells to the terminal device, and the multiple cells may include some or all cells in the base station to which the first cell belongs. After receiving the PUR configuration sent by the first cell, the terminal device may save the PUR configuration to implement fast EDT after cell selection or reselection in the same base station.

[0126] If the terminal device has resided in cells in different base stations, the terminal device can save the PUR configurations corresponding to multiple cells in different base stations to achieve fast EDT after cross-base station cell reselection. For example, if the terminal device has resided in cells in base station 1 and base station 2, the terminal device locally saves the PUR configurations corresponding to multiple cells in base station 1 and the PUR configurations corresponding to multiple cells in base station 2. When the terminal device subsequently switches from a cell in another base station to a cell in base station 1 or base station 2, it can use the locally saved PUR configuration to directly perform EDT with the switched cell, thereby improving the access speed after the cell switch.

[0127] The embodiment of the present application does not specifically limit the manner in which the first cell sends multiple PUR configurations. As an example, the first cell may send multiple cell identities (IDs) and PUR configurations corresponding to the multiple cell identities to the terminal device. The terminal device may establish a correspondence between the cell identity and the PUR configuration. The cell identity may be, for example, a physical cell identifier (PCI). After selecting or reselecting a cell, the terminal device may select the PUR configuration corresponding to the cell identity according to the cell identity, and use the PUR configuration to perform EDT with the cell. This method is conducive to reducing the operational complexity of the terminal device.

[0128] As another example, the first cell may send first information to the terminal device, and the first information may include multiple PUR configurations and indexes of multiple PUR configurations. In addition, the first cell may also send fifth information to the terminal device, and the fifth information may indicate the index of the PUR configuration corresponding to one or more cells, or in other words, the fifth information may indicate the correspondence between the cell and the index of the PUR configuration. The terminal device can determine the correspondence between the cell and the PUR configuration based on the correspondence. In this way, if the network device wants to change the PUR configuration corresponding to a certain cell, it only needs to update the fifth information carrying less information, without updating the first information carrying a large amount of information, which is conducive to reducing signaling overhead and can also improve the flexibility of the network device in allocating PUR configurations to cells.

[0129] In some implementations, the terminal device may establish a correspondence between the PUR configuration index, the cell, and the PUR configuration according to the first information and the fifth information. In addition, the terminal device may establish a correspondence between the base station, the cell, the PUR configuration index, and the PUR configuration according to the base stations to which the multiple cells belong. If the multiple cells belong to the same base station, the terminal device may establish a correspondence as shown in Table 1, where n is a positive integer.

[0130] Table 1

[0131]

[0132] Referring to Table 1, base station 1 may correspond to n cells, one cell corresponds to one PUR configuration index, and one PUR configuration index corresponds to one PUR configuration.

[0133] If the terminal device has accessed multiple cells in multiple base stations, the terminal device can store the PUR configurations corresponding to the multiple base stations for subsequent EDT use. For example, the corresponding relationship stored locally by the terminal device can be as shown in Table 2, where k and n are both positive integers.

[0134] Table 2

[0135]

[0136] As shown in Table 2, the terminal device can store the correspondence between the base station ID, the cell ID, the PUR configuration index, and the PUR configuration. Each base station can correspond to n cells, and the IDs of the n cells corresponding to different base stations can be the same or different. Table 2 describes the IDs of the n cells corresponding to each base station starting from 1. This numbering method can reduce the operational complexity of the network device.

[0137] It can be seen from Table 2 that one cell may correspond to one PUR configuration index, and the PUR configuration index corresponding to each base station may be numbered starting from 1, which may reduce the operation complexity of the base station.

[0138] In order to distinguish the PUR configurations corresponding to different base stations and reduce the complexity of the terminal device in searching for the PUR configuration, the PUR configuration corresponding to a base station can be recorded as a PUR configuration list (PUR CONFIG list). Different base stations correspond to different PUR configuration lists. A PUR configuration list can include multiple PUR configurations. In this way, Table 2 can be converted into Table 3.

[0139] Table 3

[0140]

[0141] Referring to Table 3, the terminal device can store the correspondence between the base station ID, the cell ID, the PUR configuration list, the PUR configuration index, and the PUR configuration. In the scheme shown in Table 3, one base station corresponds to one PUR configuration list. For example, base station ID 1 corresponds to PUR configuration list 1, base station ID 2 corresponds to PUR configuration list 2, ..., base station ID k corresponds to PUR configuration list k. Of course, in some implementations, one base station may also correspond to multiple PUR configuration lists, which is not specifically limited in the embodiments of the present application. By increasing the PUR configuration list, the complexity of the terminal device selecting the PUR configuration corresponding to the second cell can be reduced, thereby simplifying the operation of the terminal device.

[0142] Combine the following Figure 3 , the wireless communication method provided in the embodiment of the present application is introduced in detail.

[0143] Figure 3 The method shown is described from the perspective of device interaction. The specific form and quantity of each device shown are only examples and should not constitute any limitation on the implementation of the method provided in this application. The following takes the network device (such as the first cell) and the terminal device as the execution subject as an example to describe the communication method of the embodiment of the present application in detail.

[0144] It should be understood that the terminal device in the embodiment of the present application can be the terminal device itself, or a chip, a chip system or a processor that supports the terminal device to implement the communication method, or a logic module or software that can implement all or part of the terminal device. The network device in the embodiment of the present application can be the network device itself, or a chip, a chip system or a processor that supports the network device to implement the communication method, or a logic module or software that can implement all or part of the network device.

[0145] See also Figure 3In step S310, the first cell sends first information to the terminal device. The first information may include multiple PUR configurations for multiple cells.

[0146] In some implementations, the first cell may be a cell where the terminal device is currently residing, or the first cell may be a serving cell of the terminal device.

[0147] In some implementations, the terminal device in the embodiments of the present application may be in an RRC idle state or an RRC inactive state.

[0148] In some implementations, the terminal device in the embodiment of the present application may be a terminal device in an NTN communication system, or a terminal device in an IoT-NTN communication system. From the analysis above, it can be seen that the downlink bandwidth resources of the NTN communication system are limited and the SIB transmission delay is too large, which will cause the terminal device to access the network too slowly. By using the solution of the embodiment of the present application, the speed of the terminal device accessing the network can be greatly improved and the delay of EDT can be reduced.

[0149] The embodiments of the present application do not specifically limit the multiple cells. As an example, the multiple cells may belong to the same base station. For example, the multiple cells may be all cells within the coverage of a base station (such as the base station to which the first cell belongs). As another example, the multiple cells may be some cells within the coverage of a base station (such as the base station to which the first cell belongs). As another example, the multiple cells may belong to different base stations. For example, the multiple cells may include cells within the coverage of a first base station (such as the base station to which the first cell belongs) and cells within the coverage of a second base station.

[0150] In some implementations, the multiple cells may include a first cell and a cell adjacent to the first cell. In some implementations, the multiple cells may include a second cell, and the second cell is a neighboring cell of the first cell. In some implementations, the second cell and the first cell may belong to the same base station or different base stations.

[0151] In some implementations, the first information may be sent periodically, and the first cell may periodically send the first information to the terminal device.

[0152] In some implementations, the first information may include multiple PUR configurations, or in other words, the first information may include configuration information of multiple PURs. The multiple PUR configurations may be PUR configurations for multiple cells.

[0153] In some implementations, a cell may correspond to a group of PUR configurations. A group of PUR configurations may include one PUR configuration or multiple PUR configurations. The number of PUR configurations included in a group of PUR configurations depends on the specific implementation of the cell.

[0154] In some implementations, different cells may correspond to the same group of PUR configurations, for example, cell 1 and cell 2 correspond to the same group of PUR configurations. In some implementations, different cells correspond to different groups of PUR configurations. For example, cell 1 corresponds to a first group of PUR configurations, and cell 2 corresponds to a second group of PUR configurations.

[0155] The PUR configuration in the embodiment of the present application may be a contention-based PUR configuration. The PUR configuration may be the CBS-PUR configuration described above. The terminal device may use the PUR configuration in a contention manner. The PUR configuration in the embodiment of the present application may be replaced by a shared PUR configuration, a contention-based PUR configuration, or a CBS-PUR configuration.

[0156] In some implementations, the first information may be carried in a system message. For example, the first information may be carried in a SIB. The SIB may be a dedicated SIB, or the SIB may reuse an existing SIB, which is not specifically limited in the embodiments of the present application. By carrying the first information in a dedicated SIB, the transmission of the PUR configuration may be prevented from affecting other broadcast messages. In some implementations, the first cell may periodically broadcast the dedicated SIB.

[0157] In some implementations, the terminal device may save the multiple PUR configurations sent by the first cell locally.

[0158] In step S320, the terminal device determines a first PUR configuration from a plurality of PUR configurations. The first PUR configuration is a PUR configuration for the second cell, or the first PUR configuration is a PUR configuration corresponding to the second cell, or the first PUR configuration is used for the terminal device to perform early data transmission with the second cell. The first PUR configuration may include one or more PUR configurations. The first PUR configuration may be understood as a group of PUR configurations.

[0159] The terminal device determines the first PUR configuration from the multiple PUR configurations, which can be understood as the terminal device selecting the first PUR configuration from the multiple PUR configurations.

[0160] In step S330, the terminal device performs early data transmission with the second cell based on the first PUR configuration.

[0161] After the terminal device selects or reselects the second cell, it can use the first PUR configuration to perform early data transmission with the second cell. The terminal device and the second cell perform early data transmission, which may mean that the terminal device sends uplink data to the second cell without performing random access with the terminal device.

[0162] The embodiment of the present application does not specifically limit the manner in which the PUR configuration is carried in the first information. As an example, the first information may include an identifier of a cell and a PUR configuration corresponding to the identifier of the cell. As another example, the first information may include a PUR configuration and an index of the PUR configuration. The following describes these two methods in detail.

[0163] In some implementations, the first information may include an identifier of a cell and a PUR configuration corresponding to the identifier of the cell. The terminal device may determine the correspondence between the identifier of the cell and the PUR configuration based on the first information. The identifier of the cell may be a PCI, or other identifiers. In some implementations, the identifier of the cell may not be repeated in a base station, or in other words, the identifiers of all cells in a base station are different. In some implementations, the identifier of the cell may not be repeated in a PLMN, or in other words, the identifiers of all cells in a PLMN are different. In some implementations, the identifier of the cell may not be repeated in a tracking area code (TAC), or in other words, the identifiers of all cells in a TAC are different.

[0164] If the terminal device subsequently selects the second cell, the terminal device can directly determine the first PUR configuration from multiple PUR configurations based on the identifier of the second cell. For example, the terminal device can select the PUR configuration corresponding to the identifier of the second cell from multiple PUR configurations as the first PUR configuration. In this way, the complexity of the terminal device operation can be simplified, and the corresponding relationship locally stored by the terminal device is relatively simple, as shown in Table 4.

[0165] Table 4

[0166]

[0167] Table 4 shows a correspondence between a cell identifier and a PUR configuration, and the terminal device can store the correspondence locally. If the second cell is cell 2, the terminal device can determine that PUR configuration 2 is the first PUR configuration according to the correspondence shown in Table 4.

[0168] In some implementations, the first information may include multiple PUR configurations and indexes of multiple PUR configurations. By carrying the PUR configuration and the index of the PUR configuration in the first information, only the PUR configuration index corresponding to the cell can be indicated to the terminal device in the subsequent process, so that the terminal device can determine the PUR configuration corresponding to the cell, which is conducive to reducing the complexity of the terminal device in determining the PUR configuration.

[0169] In some implementations, the index of the PUR configuration may be at a granularity of a PUR configuration group, where a group of PUR configurations corresponds to one index, or in other words, the indexes of multiple PUR configurations included in a group of PUR configurations are the same.

[0170] In some implementations, the index of the PUR configuration may be carried in the first information in an explicit manner, or the index of the PUR configuration may be carried in the first information in an implicit manner, which is not specifically limited in the embodiments of the present application.

[0171] The index of the PUR configuration is carried in the first information in an explicit manner, which may mean that the index information of the PUR configuration is directly carried in the first information, or the first information includes an indication field, and the indication field is used to indicate the index of the PUR configuration.

[0172] Table 5

[0173]

[0174] Table 5 shows a correspondence between an index of a PUR configuration and a PUR configuration. Referring to Table 5, the first information may include a PUR configuration and an index of the PUR configuration. The index of PUR configuration 1 is 1, the index of PUR configuration 2 is 2, the index of PUR configuration 3 is 3, and the index of PUR configuration 4 is 4.

[0175] The index of the PUR configuration is implicitly carried in the first information, which may refer to an indication field in the first information that does not contain the index of the PUR configuration. The index of the PUR configuration may be determined in other ways. For example, the index of the PUR configuration may be determined according to the arrangement order of the PUR configuration in the first information. Table 6 shows an order of multiple PUR configurations included in the first information.

[0176] Table 6

[0177]

[0178] If the indexes of the PUR configurations are numbered starting from 0, according to the order of the PUR configurations in Table 6, the terminal device may determine that the index of PUR configuration 1 is 0, the index of PUR configuration 2 is 1, the index of PUR configuration 3 is 2, and the index of PUR configuration 4 is 3.

[0179] In some implementations, the terminal device may determine the first PUR configuration from multiple PUR configurations according to the index of the PUR configuration corresponding to the second cell (recorded as the first index). For example, the terminal device may select the PUR configuration corresponding to the first index from multiple PUR configurations as the first PUR configuration.

[0180] For example, taking Table 5 as an example, if the first index is 3, the terminal device may determine that the first PUR configuration is PUR configuration 3. Taking Table 6 as an example, if the first index is 3, the terminal device may determine that the first PUR configuration is PUR configuration 4.

[0181] In some implementations, the first index may be indicated to the terminal device by the network device. The network device may indicate to the terminal device the correspondence between the index of the PUR configuration corresponding to the cell and the cell, and based on the correspondence, the terminal device may determine the correspondence between the first index and the second cell. The embodiment of the present application does not specifically limit the network device. For example, the network device may be the first cell, that is, the first index may be indicated to the terminal device by the first cell. For another example, the network device may be the second cell, and the first index may be indicated to the terminal device by the second cell. The following introduces these two situations respectively.

[0182] In some implementations, the first index can be carried in the configuration information related to the second cell to reduce signaling overhead. For example, if the first index is indicated to the terminal device by the first cell, since the second cell is a neighboring cell of the first cell (service cell), the first index can be carried in the measurement configuration information of the neighboring cell. For another example, if the first index is indicated to the terminal device by the second cell, since the second cell is the service cell of the terminal device, the first index can be carried in the configuration information of the service cell. Since the configuration information related to the second cell itself carries the identification information of the second cell (such as PCI), the first index can be directly added to the configuration information to indicate the correspondence between the second cell and the first index to the terminal device, thereby reducing signaling overhead.

[0183] In some implementations, the first index may be sent by the first cell to the terminal device. Before the terminal device determines the first PUR configuration from multiple PUR configurations based on the first index, the first cell may send second information to the terminal device, and the second information may be used to indicate the first index. That is, the terminal device may receive multiple PUR configurations, indexes of multiple PUR configurations, and the first index sent by the first cell, and select a PUR configuration corresponding to the first index from multiple PUR configurations based on the first index, and the selected PUR configuration is the first PUR configuration.

[0184] In some implementations, after receiving the first information and the second information sent by the first cell, the terminal device can establish a correspondence between the base station, the cell, the PUR configuration index, and the PUR configuration, and save the correspondence locally, such as the correspondence shown in Table 1-Table 3. If the terminal device subsequently selects the second cell, the terminal device can directly determine the first PUR configuration based on the locally saved correspondence, that is, without receiving the PUR configuration sent by the second cell, the first PUR configuration can be determined, thereby reducing the EDT delay.

[0185] In some implementations, the second information may be carried in the SIB. If the frequency point used by the second cell is the same as the frequency point used by the first cell, that is, the second cell is co-frequency with the first cell, the second information may be carried in SIB4. In an embodiment of the present application, a field (such as a PUR index field or a PUR ID field) may be added to SIB4 to carry the index of the PUR configuration corresponding to the co-frequency neighboring cell.

[0186] As can be seen from the above, SIB4 can include relevant information of the same-frequency neighboring cells (such as the list information of the same-frequency neighboring cells). Therefore, SIB4 usually includes the identification information of the second cell. The second information is carried in SIB4, and the identification information of the second cell in SIB4 can be reused to establish a correspondence between the second cell and the first index, thereby reducing signaling overhead.

[0187] If the frequency point used by the second cell is different from the frequency point used by the first cell, that is, the second cell and the first cell are inter-frequency, the second information can be carried in SIB5. In the embodiment of the present application, a field (such as a PURindex field or a PUR ID field) can be added to SIB5 to carry the index of the PUR configuration corresponding to the inter-frequency neighboring cell.

[0188] As can be seen from the above, SIB5 can include relevant information of inter-frequency neighboring cells (such as list information of inter-frequency neighboring cells). Therefore, SIB5 usually includes identification information of the second cell. The second information is carried in SIB5, and the identification information of the second cell in SIB5 can be reused to establish a correspondence between the second cell and the first index, thereby reducing signaling overhead.

[0189] In some implementations, if the network device wants to update the correspondence between each cell and the PUR configuration, it can only update the correspondence between the cell and the PUR configuration index to the terminal device without updating the first information. For example, if the network device wants to update the PUR configuration corresponding to the second cell, it can only update the index of the PUR configuration indicated in the second information. Since the amount of information carried by the first information is large, if the first information is updated, it will take up a lot of resources. Through the solution of the embodiment of the present application, the first information can be kept unchanged, while the second information is updated, which is conducive to reducing signaling overhead. In addition, this method can also improve the flexibility of the network device in allocating the PUR configuration to the second cell.

[0190] In some implementations, before the terminal device determines the first PUR configuration from multiple PUR configurations, the terminal device may first determine whether a PUR configuration corresponding to the base station to which the second cell belongs is stored locally, or in other words, the terminal device may first determine whether a correspondence between the base station to which the second cell belongs and the PUR configuration is stored locally. For example, taking Tables 1 to 3 as examples, the terminal device may determine whether the table contains a correspondence between the base station to which the second cell belongs and the PUR configuration. If the terminal device determines that a PUR configuration corresponding to the base station to which the second cell belongs is stored locally, the terminal device may determine the first PUR configuration corresponding to the second cell based on the first index and the first correspondence (the first correspondence stored locally). The first correspondence may be a correspondence between an identifier of a cell, a base station to which the cell belongs, and an index of a PUR configuration corresponding to the cell. For example, the first correspondence may be a correspondence contained in any one of Tables 1 to 3.

[0191] The terminal device in the embodiment of the present application can judge the locally stored PUR configuration. If the PUR configuration corresponding to the base station to which the second cell belongs is stored locally, the terminal device can give priority to using the locally stored first corresponding relationship to determine the first PUR configuration to reduce the delay of EDT with the second cell.

[0192] For example, taking Table 3 as an example, the terminal device can uniquely determine the first PUR configuration according to the identifier of the second cell, the index of the PUR configuration corresponding to the second cell, and the base station to which the second cell belongs.

[0193] If the terminal device determines that the PUR configuration corresponding to the base station to which the second cell belongs is not stored locally, the terminal device can receive multiple PUR configurations sent by the second cell, and the multiple PUR configurations may include the PUR configuration for the second cell. If the terminal device determines that the PUR configuration corresponding to the base station to which the second cell belongs is not stored locally, the second cell may belong to a cell across base stations, or the second cell may be the first cell where the terminal device resides. In this case, the terminal device needs to receive multiple PUR configurations sent by the second cell before it can perform EDT with the second cell.

[0194] In some implementations, the first index may be sent by the second cell to the terminal device. Before the terminal device determines the first PUR configuration from multiple PUR configurations based on the first index, the second cell may send third information to the terminal device, and the third information may be used to indicate the first index. That is, the terminal device may receive multiple PUR configurations and indexes of multiple PUR configurations sent by the first cell, and receive the first index sent by the second cell. In addition, the terminal device may select a PUR configuration corresponding to the first index from multiple PUR configurations based on the first index, and the selected PUR configuration is the first PUR configuration.

[0195] The terminal device in the embodiment of the present application can determine the first PUR configuration according to the index of the PUR configuration corresponding to the second cell indicated by the second cell, so that when the correspondence between the second cell and the PUR configuration changes, the updated correspondence can be obtained in time to determine the accurate first PUR configuration, so as to improve the success rate of uplink transmission.

[0196] In some implementations, the third information may be carried in the SIB. For example, the third information may be carried in one or more of the following messages: SIB2, SIB31, and SIB32. If the third information is sent by the second cell to the terminal device, the second cell is the service cell of the terminal device. As can be seen from the foregoing, SIB2, SIB31, and SIB32 may include configuration information of the service cell. The third information is carried in one or more of SIB2, SIB31, and SIB32. The identification information of the second cell in SIB2, SIB31, and SIB32 may be reused to establish a correspondence between the second cell and the first index, thereby reducing signaling overhead. The embodiment of the present application may add a field (such as a PURindex field or a PUR ID field) in SIB2, SIB31, and / or SIB32 to carry the index of the PUR configuration corresponding to the service cell.

[0197] In some implementations, as can be seen from the foregoing, if the terminal device needs to perform EDT with the second cell, the terminal device has two ways to determine the first PUR configuration. One is that the terminal device can directly determine the first PUR configuration based on the first index stored locally. This method takes a shorter time to determine the first PUR configuration, thereby reducing the delay of the terminal device performing EDT with the second cell; the other is that the terminal device can receive the third information sent by the second cell, and determine the first PUR configuration based on the first index indicated by the third information.

[0198] In some implementations, if the terminal device locally stores the first index, the terminal device can directly determine the first PUR configuration based on the locally stored first index; if the terminal device does not locally store the first index, the terminal device can first receive the third information sent by the second cell, and then determine the first PUR configuration based on the first index indicated by the third information.

[0199] In some implementations, before determining the first PUR configuration, the terminal device may first determine whether the locally stored correspondence includes information about the base station to which the second cell belongs. If the locally stored correspondence includes information about the base station to which the second cell belongs, the terminal device may continue to determine whether the cell corresponding to the base station includes the second cell. If the cell corresponding to the base station includes the second cell, the terminal device may search for the PUR configuration corresponding to the second cell from the PCI configuration index corresponding to the base station, and use the PUR configuration as the first PUR configuration. If the cell corresponding to the base station does not include the second cell, the terminal device may receive third information from the second cell to obtain the first index, and determine the PUR configuration corresponding to the first index from the locally stored correspondence, and use the PUR configuration as the first PUR configuration.

[0200] If the local information of the base station to which the second cell belongs is not included, multiple PUR configurations and indexes of multiple PUR configurations can be received from the second cell, and a first index corresponding to the second cell indicated by the second cell can be received, and based on the first index, the first PUR configuration can be determined from the multiple PUR configurations.

[0201] In some implementations, the first cell may also send fourth information to the terminal device, where the fourth information is used to indicate the index of the PUR configuration corresponding to the first cell, that is, the first cell may send the index of the PUR configuration corresponding to the serving cell to the terminal device.

[0202] In some implementations, if the network device wants to update the correspondence between each cell and the PUR configuration, it can only update the correspondence between the cell and the PUR configuration index to the terminal device without updating the first information. For example, if the network device wants to update the PUR configuration corresponding to the first cell, it can only update the index of the PUR configuration indicated in the fourth information. Since the amount of information carried by the first information is large, if the first information is updated, it will occupy a large amount of resources. Through the solution of the embodiment of the present application, the first information can be kept unchanged, while the fourth information is updated, which is conducive to reducing signaling overhead. In addition, this method can also improve the flexibility of the network device in allocating the PUR configuration to the first cell.

[0203] In addition, by sending the fourth information to the terminal device, when the terminal device selects or reselects the first cell again, it can directly determine the PUR configuration corresponding to the first cell according to the index of the PUR configuration corresponding to the first cell, so as to perform EDT with the first cell, thereby reducing the delay of EDT between the terminal device and the first cell.

[0204] In some implementations, the fourth information may be carried in the SIB. For example, the fourth information may be carried in one or more of the following messages: SIB2, SIB31, and SIB32. If the fourth information is sent by the first cell to the terminal device, the first cell is the service cell of the terminal device. As can be seen from the foregoing, SIB2, SIB31, and SIB32 may include configuration information of the service cell. The fourth information is carried in one or more of SIB2, SIB31, and SIB32. The identification information of the first cell in SIB2, SIB31, and SIB32 may be reused to establish a correspondence between the first cell and the index of the PUR configuration corresponding to the first cell, thereby reducing the signaling overhead.

[0205] In some implementations, the first information may be carried in a SIB, which may be a dedicated SIB or a newly added SIB. The SIB may be, for example, SIB3x. The priority of the dedicated SIB may be lower than the priority of SIB1 and / or the priority of SIB2, so as to avoid the transmission of the dedicated SIB affecting the transmission of SIB1 and / or SIB2, thereby affecting the access of the terminal device.

[0206] In some implementations, the first information is carried in a dedicated SIB, the second information is carried in SIB4 or SIB5, and the third information is carried in SIB2. The priority of SIB2 is higher than the priority of the dedicated SIB. In some implementations, if the terminal device locally stores the correspondence between the first index and the first PUR configuration, but the terminal device does not store the correspondence between the second cell and the first index, in this case, the terminal device needs to receive SIB2 from the second cell to obtain the correspondence between the second cell and the first index, so as to determine the first PUR configuration. By setting the priority of SIB2 higher than the priority of the dedicated SIB, the terminal device can receive SIB2 with priority to determine the first PUR configuration, which is conducive to reducing the time required to determine the first PUR configuration, thereby reducing the delay of EDT.

[0207] Taking SIB3x containing multiple PUR configurations as an example, the information content contained in SIB3x can be as follows: Figure 4 shown.

[0208] Taking the index of the PUR configuration corresponding to the serving cell in SIB2 as an example, the information content contained in SIB2 can be as follows: Figure 5 shown. Figure 5 The content in the box may be newly added on the basis of SIB2.

[0209] Among them, maxNoofPurconfig represents the maximum number of PUR configuration groups supported by a single base station. The embodiment of the present application does not specifically limit the value of maxNoofPurconfig. For example, the value of maxNoofPurconfig can be 16. maxNoofPurconfig can be determined based on the number of cells supported by a single base station and the number of PUR configuration parameter groups supported. The protocol can define an allowed maximum value as maxNoofPurconfig.

[0210] Taking the index of the PUR configuration corresponding to the same frequency neighboring cell in SIB4 as an example, the information content contained in SIB4 can be as follows: Figure 6 As shown. Among them, Figure 6 The content in the box may be newly added content. intraFreqNeighCellList-v19x0 may include a set of PUR CONFIG indexes, which correspond one-to-one with the same-frequency neighbor cells in intraFreqNeighCellList-r13 in order to indicate the correspondence between each same-frequency neighbor cell and the PUR CONFIG index.

[0211] Taking the index of the PUR configuration corresponding to the hetero-frequency neighboring cell contained in SIB5 as an example, the information content contained in SIB5 can be as follows: Figure 7 As shown. Among them, Figure 7 The content in the box may be newly added content. interFreqNeighCellList-r19 may include a group of PUR CONFIG indexes, which correspond one-to-one with the inter-frequency neighbor cells in interFreqNeighCellList-r13 in order to indicate the correspondence between each inter-frequency neighbor cell and the PUR CONFIG index.

[0212] It should be noted that the solution of the embodiment of the present application can be applied to an IoT system or a non-IoT system.

[0213] It should be noted that Figure 4-Figure 7 The content shown is only an explanation of the narrowband (NB) system as an example, and the embodiments of the present application are not limited to this. In addition to being applied to the NB system, the solution of the embodiments of the present application can also be applied to non-NB systems. If applied to non-NB systems, then Figure 4-Figure 7 The "NB" in the content shown in can be deleted. For example, Figure 6 SystemInformationBlockType4-NB can be replaced with SystemInformationBlockType4.

[0214] Combine the following Figure 8 , taking the first information carried in SIB3x as an example, the method for the terminal device to determine the first PUR configuration is introduced in detail.

[0215] See also Figure 8 In step S810, the terminal device selects a cell. The following description is made by taking the cell selected by the terminal device as the second cell as an example.

[0216] In step S820, the terminal device receives high-priority system information sent by the second cell, such as SIB1, or SIB1 and SIB2.

[0217] In step S830, the terminal device determines whether a PUR configuration corresponding to the base station to which the second cell belongs is stored locally.

[0218] If the PUR configuration corresponding to the base station to which the second cell belongs is stored locally, the terminal device executes step S840; if the PUR configuration corresponding to the base station to which the second cell belongs is not stored locally, the terminal device executes steps S850 and S860.

[0219] In step S840, the terminal device obtains the first PUR configuration stored locally according to the first index.

[0220] In step S850, the terminal device continues to receive the low priority SIB3x and saves the multiple PUR configurations and the indexes of the multiple PUR configurations in the SIB3x. In addition, the terminal device may also receive the SIB2 sent by the second cell and determine the first index corresponding to the second cell according to the SIB2.

[0221] In step S860, the terminal device determines a first PUR configuration according to the first index.

[0222] In step S870, the terminal device uses the first PUR configuration to perform EDT with the second cell.

[0223] In some implementations, the index of the PUR configuration may be unique within a base station, unique within a PLMN, or unique within a TAC. For example, the indexes of multiple PUR configurations (or multiple groups of PUR configurations) corresponding to a base station are different. For another example, the indexes of multiple PUR configurations (or multiple groups of PUR configurations) corresponding to a PLMN are different. For another example, the indexes of multiple PUR configurations (or multiple groups of PUR configurations) corresponding to a TAC are different.

[0224] In some implementations, if the indexes of multiple PUR configurations corresponding to a base station are different, the indexes of PUR configurations corresponding to different base stations may be the same. For example, the indexes of multiple PUR configurations corresponding to different base stations may be numbered starting from 0, which can reduce the complexity of the network device setting the index of the PUR configuration.

[0225] In some implementations, the indexes of multiple PUR configurations corresponding to one PLMN are different. Since one PLMN can correspond to multiple base stations, the indexes of PUR configurations corresponding to multiple base stations are different, which can reduce the complexity of establishing the corresponding relationship for the terminal device. The corresponding relationship established by the terminal device can be shown in Table 7. The terminal device only needs to establish the corresponding relationship between the cell, the PUR configuration index and the PUR configuration, and a PUR configuration can be uniquely determined through the PUR configuration index.

[0226] In some implementations, the indexes of multiple PUR configurations corresponding to one TAC are different. Since one TAC can correspond to multiple base stations, the indexes of PUR configurations corresponding to multiple base stations are different, which can reduce the complexity of establishing the corresponding relationship of the terminal device. The corresponding relationship established by the terminal device can be shown in Table 7, where n is a positive integer. The terminal device only needs to establish the corresponding relationship between the cell and the PUR configuration index, and a PUR configuration can be uniquely determined by the PUR configuration index.

[0227] Table 7

[0228]

[0229] After selecting the second cell, the terminal device can directly and uniquely determine the first PUR configuration according to the first index.

[0230] When the network device configures a dedicated PUR configuration for the terminal device, each dedicated PUR configuration will correspond to a PUR configuration identifier (i.e., PUR-ConfigID-NB), and the PUR index is represented by 20 bits. The embodiment of the present application can reuse the PUR configuration identifier as the index of the PUR configuration to achieve the uniqueness of the PUR configuration index within a PLMN or within a TAC.

[0231] The embodiment of the present application does not specifically limit the number of bits occupied by the index configured by the PUR. For example, the index configured by the PUR may occupy 20 bits. Of course, the index configured by the PUR may occupy more or fewer bits. The specific number of bits occupied by the index configured by the PUR may be determined based on the number of cells corresponding to a PLMN or the number of cells corresponding to a TAC.

[0232] Combination of the above Figure 1 to Figure 8 , describes the method embodiment of the present application in detail, and the following is combined with Figure 9~Figure 11 , describing the device embodiment of the present application. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0233] Fig. 9 is a schematic block diagram of a communication device provided in an embodiment of the present application. Fig. 9 As shown, the communication device 900 includes a receiving module 910 , a determining module 920 and a transmitting module 930 .

[0234] In a possible implementation manner, the apparatus 900 may be used to implement the steps performed by the terminal device above.

[0235] The receiving module 910 is configured to receive first information sent by a first cell, where the first information includes multiple pre-configured uplink resource PUR configurations for multiple cells, and the multiple cells include a second cell.

[0236] The determination module 920 is configured to determine a first PUR configuration corresponding to the second cell from the multiple PUR configurations.

[0237] The transmission module 930 is used to perform early data transmission with the second cell based on the first PUR configuration.

[0238] In some implementations, the first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the determination module 920 is used to determine the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell.

[0239] In some implementations, before the determination module 920 determines the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the receiving module 910 is also used to: receive second information sent by the first cell, and the second information is used to indicate the index of the PUR configuration corresponding to the second cell.

[0240] In some implementations, if the frequency used by the second cell is the same as the frequency used by the first cell, the second information is carried in the system information block SIB4; or if the frequency used by the second cell is different from the frequency used by the first cell, the second information is carried in SIB5.

[0241] In some implementations, before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the determination module 920 is also used to: determine whether the PUR configuration corresponding to the base station to which the second cell belongs is stored locally; if the PUR configuration corresponding to the base station to which the second cell belongs is stored locally, the determination module 920 is used to: determine the first PUR configuration corresponding to the second cell based on the index of the PUR configuration corresponding to the second cell and a first correspondence, wherein the first correspondence is a correspondence between the cell identifier, the base station to which the cell belongs, and the index of the PUR configuration corresponding to the cell.

[0242] In some implementations, before the determination module 920 determines the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the receiving module 910 is also used to: receive third information sent by the second cell, and the third information is used to indicate the index of the PUR configuration corresponding to the second cell.

[0243] In some implementations, the third information is carried in one or more of the following messages: SIB2, SIB31, and SIB32.

[0244] In some implementations, the receiving module 910 is configured to: if the index of the PUR configuration corresponding to the second cell is not stored locally, receive the third information sent by the second cell.

[0245] In some implementations, the first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the receiving module 910 is further used to: receive fourth information sent by the first cell, where the fourth information is used to indicate the index of the PUR configuration corresponding to the first cell.

[0246] In some implementations, the fourth information is carried in one or more of the following messages: SIB2, SIB31, and SIB32.

[0247] In some implementations, the indexes of multiple PUR configurations corresponding to one base station are different, or the indexes of multiple PUR configurations corresponding to one public land mobile network PLMN are different, or the indexes of multiple PUR configurations corresponding to one tracking area code TAC are different.

[0248] In some implementations, the first information is carried in a dedicated SIB.

[0249] In some implementations, the dedicated SIB is sent as a periodic broadcast.

[0250] In some implementations, the dedicated SIB has a lower priority than SIB1 and / or SIB2.

[0251] Fig.10 is a schematic block diagram of a communication device provided in an embodiment of the present application. Fig.10 As shown, the communication device 1000 includes a sending module 1010 .

[0252] In a possible implementation manner, the apparatus 1000 may be used to implement the steps performed by the network device (eg, the first cell) described above.

[0253] The sending module 1010 is used to send first information to a terminal device, wherein the first information includes multiple pre-configured uplink resource PUR configurations for multiple cells, the multiple cells include a second cell, the multiple PUR configurations include a first PUR configuration corresponding to the second cell, and the first PUR configuration is used for early data transmission between the terminal device and the second cell.

[0254] In some implementations, the first information includes the plurality of PUR configurations and indexes of the plurality of PUR configurations.

[0255] In some implementations, the sending module 1010 is further used to: send second information to the terminal device, where the second information is used to indicate an index of a PUR configuration corresponding to the second cell.

[0256] In some implementations, if the frequency used by the second cell is the same as the frequency used by the first cell, the second information is carried in the system information block SIB4; or if the frequency used by the second cell is different from the frequency used by the first cell, the second information is carried in SIB5.

[0257] In some implementations, the first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the sending module 1010 is further used to: send fourth information to the terminal device, where the fourth information is used to indicate the index of the PUR configuration corresponding to the first cell.

[0258] In some implementations, the fourth information is carried in one or more of the following messages: SIB2, SIB31, and SIB32.

[0259] In some implementations, the indexes of multiple PUR configurations corresponding to one base station are different, or the indexes of multiple PUR configurations corresponding to one public land mobile network PLMN are different, or the indexes of multiple PUR configurations corresponding to one tracking area code TAC are different.

[0260] In some implementations, the first information is carried in a dedicated SIB.

[0261] In some implementations, the dedicated SIB is sent as a periodic broadcast.

[0262] In some implementations, the dedicated SIB has a lower priority than SIB1 and SIB2.

[0263] It should be understood that the apparatus 900 and the apparatus 1000 here are embodied in the form of functional modules. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art may understand that the apparatus 900 may be specifically a terminal device in the above-mentioned embodiment, and the apparatus 900 may be used to execute the various processes and / or steps corresponding to the terminal device in the above-mentioned method embodiment. The apparatus 1000 may be specifically a network device in the above-mentioned embodiment, and the apparatus 1000 may be used to execute the various processes and / or steps corresponding to the network device in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.

[0264] The above-mentioned device 900 has the function of implementing the corresponding steps executed by the terminal device in the above-mentioned method, and the device 1000 has the function of implementing the corresponding steps executed by the network device in the above-mentioned method. The above-mentioned functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

[0265] In the embodiment of the present application, the apparatus 900 and the apparatus 1000 may also be chips, such as system on chip (SOC) or modem, etc. Correspondingly, the receiving module and the sending module may be transceiver circuits of the chip, which is not limited here.

[0266] Fig.11 It is a schematic structural diagram of a communication device according to an embodiment of the present application. Fig.11 The dotted line in the figure indicates that the unit or module is optional. The device 1100 can be used to implement the method described in the above method embodiment. The device 1100 can be a chip, a terminal device or a network device.

[0267] The device 1100 may include one or more processors 1110. The processor 1110 may support the device 1100 to implement the method described in the above method embodiment. The processor 1110 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may also be other general-purpose processors, digital signal processors (DSP), ASICs, field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0268] The apparatus 1100 may further include one or more memories 1120. The memory 1120 stores a program, which can be executed by the processor 1110, so that the processor 1110 executes the method described in the above method embodiment. The memory 1120 may be independent of the processor 1110 or integrated in the processor 1110.

[0269] The apparatus 1100 may further include a transceiver 1130. The processor 1110 may communicate with other devices or chips through the transceiver 1130. For example, the processor 1110 may transmit and receive data with other devices or chips through the transceiver 1130.

[0270] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device or a network device provided in the present application, and the program enables a computer to execute the method performed by the terminal device or the network device in each embodiment of the present application.

[0271] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device or network device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0272] The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal device or network device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the terminal device or network device in each embodiment of the present application.

[0273] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0274] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0275] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0276] In the present application, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it to B indirectly through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside the RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station.

[0277] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0278] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0279] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0280] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0281] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: receiving first information sent by a first cell, where the first information includes a plurality of preconfigured uplink resource PUR configurations for a plurality of cells, where the plurality of cells include a second cell; Determine a first PUR configuration corresponding to the second cell from the multiple PUR configurations, where the first PUR configuration is a shared PUR configuration, and terminal devices in the second cell use the first PUR configuration in a contention manner; Based on the first PUR configuration, early data transmission is performed with the second cell.

2. The method according to claim 1, characterized in that: The first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and determining the first PUR configuration corresponding to the second cell from the multiple PUR configurations includes: The first PUR configuration is determined from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell.

3. The method according to claim 2, characterized in that Before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the method further includes: Second information sent by the first cell is received, where the second information is used to indicate an index of a PUR configuration corresponding to the second cell.

4. The method according to claim 3, characterized in that If the frequency point used by the second cell is the same as the frequency point used by the first cell, the second information is carried in a system information block SIB4; or If the frequency used by the second cell is different from the frequency used by the first cell, the second information is carried in SIB5.

5. The method according to claim 3 or 4, characterized in that: Before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the method further includes: determining whether a PUR configuration corresponding to the base station to which the second cell belongs is stored locally; If a PUR configuration corresponding to the base station to which the second cell belongs is locally stored, determining the first PUR configuration from the multiple PUR configurations based on an index of the PUR configuration corresponding to the second cell includes: Based on the index of the PUR configuration corresponding to the second cell and the first correspondence, the first PUR configuration corresponding to the second cell is determined, where the first correspondence is the correspondence between the cell identifier, the base station to which the cell belongs, and the index of the PUR configuration corresponding to the cell.

6. The method according to claim 2, characterized in that Before determining the first PUR configuration from the multiple PUR configurations based on the index of the PUR configuration corresponding to the second cell, the method further includes: Receive third information sent by the second cell, where the third information is used to indicate an index of a PUR configuration corresponding to the second cell.

7. The method according to claim 6, characterized in that The third information is carried in one or more of the following messages: SIB2, SIB31 and SIB32.

8. The method according to claim 6 or 7, characterized in that: The receiving the third information sent by the second cell includes: If the index of the PUR configuration corresponding to the second cell is not stored locally, the third information sent by the second cell is received.

9. The method according to claim 1, characterized in that: The first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the method further includes: Receive fourth information sent by the first cell, where the fourth information is used to indicate an index of a PUR configuration corresponding to the first cell.

10. The method according to claim 9, characterized in that The fourth information is carried in one or more of the following messages: SIB2, SIB31 and SIB32.

11. The method according to any one of claims 2-4, 6, 7, 9, and 10, characterized in that: The indexes of multiple PUR configurations corresponding to a base station are different, or The indexes of multiple PUR configurations corresponding to a public land mobile network PLMN are different, or The indexes of multiple PUR configurations corresponding to one tracking area code TAC are different.

12. The method according to any one of claims 1-4, 6, 7, 9, 10, characterized in that: The first information is carried in a dedicated SIB.

13. The method according to claim 12, characterized in that The priority of the dedicated SIB is lower than that of SIB1 and / or SIB2.

14. A wireless communication method, characterized in that: The method is applied to a first cell, comprising: Sending first information to a terminal device, the first information including multiple pre-configured uplink resource PUR configurations for multiple cells, the multiple cells including a second cell, the multiple PUR configurations including a first PUR configuration corresponding to the second cell, the first PUR configuration being a shared PUR configuration, the terminal device in the second cell using the first PUR configuration in a competitive manner, the first PUR configuration being used for early data transmission between the terminal device and the second cell.

15. The method according to claim 14, characterized in that The first information includes the plurality of PUR configurations and indexes of the plurality of PUR configurations.

16. The method according to claim 15, characterized in that The method further comprises: Send second information to the terminal device, where the second information is used to indicate the index of the PUR configuration corresponding to the second cell.

17. The method according to claim 16, characterized in that If the frequency point used by the second cell is the same as the frequency point used by the first cell, the second information is carried in a system information block SIB4; or If the frequency used by the second cell is different from the frequency used by the first cell, the second information is carried in SIB5.

18. The method according to claim 14, characterized in that The first information includes the multiple PUR configurations and indexes of the multiple PUR configurations, and the method further includes: Send fourth information to the terminal device, where the fourth information is used to indicate the index of the PUR configuration corresponding to the first cell.

19. The method according to claim 18, characterized in that The fourth information is carried in one or more of the following messages: SIB2, SIB31 and SIB32.

20. The method according to any one of claims 15 to 19, characterized in that The indexes of multiple PUR configurations corresponding to a base station are different, or The indexes of multiple PUR configurations corresponding to a public land mobile network PLMN are different, or The indexes of multiple PUR configurations corresponding to one tracking area code TAC are different.

21. The method according to any one of claims 14 to 19, characterized in that The first information is carried in a dedicated SIB.

22. The method according to claim 21, characterized in that The priority of the dedicated SIB is lower than that of SIB1 and SIB2.

23. A communication device, characterized in that: include: A processor, wherein the processor is coupled to a memory, wherein the memory is used to store a computer program, and when the processor calls the computer program, the communication device executes the method as claimed in any one of claims 1 to 13, or any one of claims 14 to 22.

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