Configuration information acquisition method and device

Abstract

The embodiment of the present application provides a configuration information acquisition method and device, which can be applied to the scenario where the terminal device acquires RNTI, and the terminal device can be in an RRC inactive state. The method may include: acquiring a cell identifier; obtaining first configuration information according to the cell identifier, the cell identifier and the first configuration information having a corresponding relationship, and the first configuration information is used to configure the RNTI; according to the first configuration information, performing one or more of the following: receiving downlink control information; receiving downlink data; sending uplink control information; or sending uplink data. By using the embodiment of the present application, the terminal device can obtain the RNTI used when it is in an RRC inactive state, so that the terminal device can transmit data with low power consumption.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to a method and device for acquiring configuration information. Background Art

[0002] Downlink control information (DCI) can schedule the transmission of downlink data channels, such as scheduling the transmission of physical downlink shared channel (PDSCH); it can also schedule the transmission of uplink data channels, such as scheduling the transmission of physical uplink shared channel (PUSCH). The DCI that schedules PDSCH / PUSCH transmission is transmitted via the physical downlink control channel (PDCCH). PDCCH is carried on the time-frequency resources jointly determined by the configuration information of the control resource set (CORESET) and the configuration information of the search space (SearchSpace). The time-frequency resources jointly determined by the configuration information of the CORESET and the configuration information of the SearchSpace can be called the time-frequency resources of DCI, and the terminal device can detect DCI on this time-frequency resources.

[0003] The cyclic redundancy check (CRC) of the DCI is scrambled by a radio network temporary identifier (RNTI). In different scenarios, the RNTI may be public or terminal device-specific, and can be predefined or configured for the terminal device by the network device. The terminal device uses the RNTI to try to descramble the CRC of the DCI. If the descrambling is successful, the content of the DCI can be received and obtained.

[0004] The terminal device can establish a radio resource control (RRC) connection with the network device. When the RRC connection is established, the RRC state of the terminal device is the RRC connected state. In addition to the RRC connected state, the RRC state of the terminal device can also be the RRC idle state or the RRC inactive state. At present, a terminal device in the RRC inactive state cannot transmit data with the network device because it cannot obtain the configuration of the corresponding RNTI when entering the RRC inactive state. In order to realize data transmission between a terminal device in the RRC inactive state and a network device, the terminal device needs to obtain the RNTI used when it is in the RRC inactive state.

[0005] Therefore, how the terminal device obtains the RNTI used when it is in the RRC inactive state is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The embodiments of the present application provide a configuration information acquisition method and apparatus, which can enable a terminal device to obtain an RNTI used when in an RRC inactive state, thereby enabling the terminal device to perform data transmission with low power consumption.

[0007] A first aspect of an embodiment of the present application provides a method for acquiring configuration information, which may be executed by a terminal device, or may be executed by a component of the terminal device (such as a processor, a chip, or a chip system, etc.), including:

[0008] Obtain a cell identifier; obtain first configuration information according to the cell identifier, where the cell identifier corresponds to the first configuration information; the first configuration information is used to configure the RNTI; and perform one or more of the following according to the first configuration information:

[0009] Receive downlink control information; receive downlink data; send uplink control information; send uplink data.

[0010] In a first aspect of an embodiment of the present application, first configuration information for configuring RNTI is obtained through a cell identifier, so that a terminal device can implement data transmission with a network device according to the RNTI.

[0011] Among them, the cell identifier can be used to identify the cell where the terminal device resides, for example, it can be used to identify the cell where the terminal device resides when it is in the RRC inactive state. The terminal device in the RRC inactive state executes the method provided by the first aspect, so that the terminal device can obtain the RNTI used when it is in the RRC inactive state, thereby enabling data transmission between the terminal device in the RRC inactive state and the network device. The terminal device performs data transmission in the RRC inactive state, so that the terminal device performs data transmission with low power consumption, thereby slowing down the power consumption rate of the terminal device and extending the use time of the terminal device. Compared with the terminal device in the RRC connected state performing data transmission, signaling overhead can be saved, thereby saving network resources.

[0012] In a possible implementation, the terminal device receives second configuration information, and the second configuration information is used to configure the correspondence between the cell identifier and the first configuration information. The terminal device can receive the second configuration information when it is in an RRC connected state, and can obtain the first configuration information according to the second configuration information and the obtained cell identifier when it is in an RRC inactive state, so that the terminal device in the RRC inactive state can perform data transmission with low power consumption.

[0013] The correspondence between the cell identifier and the first configuration information may also be predefined so that the terminal device can directly obtain the first configuration information when acquiring the cell identifier, thereby quickly entering a scenario of data transmission with low power consumption.

[0014] In one possible implementation, the correspondence between the cell identifier and the first configuration information may be a correspondence between the cell identifier and the RNTI. The terminal device obtains the RNTI based on the acquired cell identifier, so as to perform one or more of the following according to the RNTI: receiving downlink control information, receiving downlink data; sending uplink control information, sending uplink data, thereby enabling the terminal device to transmit data with low power consumption.

[0015] In a possible implementation, the first configuration information may be used not only to configure the RNTI but also to configure the time-frequency resources of the downlink control information so that the terminal device can quickly detect the downlink control information.

[0016] In a possible implementation, the correspondence between the cell identifier and the first configuration information may be that the cell identifier corresponds to the RNTI and the time-frequency resources of the downlink control information, and the terminal device obtains the RNTI and the time-frequency resources of the downlink control information according to the obtained cell identifier, so that the terminal device can quickly obtain the downlink control information. Furthermore, the downlink control information can schedule the transmission of the PDSCH, and the terminal device can receive the downlink data carried on the PDSCH according to the received downlink control information, so that the terminal device can receive the downlink data with low power consumption.

[0017] In a possible implementation, the correspondence between the cell identifier and the first configuration information may be that the cell identifier corresponds to the RNTI and the time-frequency resources of the downlink control information. In addition to obtaining the cell identifier, the terminal device also obtains a synchronization signal block index, and the synchronization signal block index corresponds to the time-frequency resources of the downlink control information. The terminal device obtains the RNTI based on the obtained cell identifier, and obtains the time-frequency resources of the downlink control information based on the obtained cell identifier and the synchronization signal block index, so that the terminal device can quickly obtain accurate time-frequency resources for the downlink control information.

[0018] The terminal device can obtain the cell identifier through the detected synchronization signal block, and can obtain a more accurate cell identifier; the terminal device can obtain the synchronization signal block index through the detected synchronization signal block, and can obtain a more accurate synchronization signal block index.

[0019] In one possible implementation, the correspondence between the cell identifier and the first configuration information may be that the cell identifier corresponds to the RNTI and the uplink authorization configuration resources, and the terminal device obtains the RNTI and the uplink authorization configuration resources according to the acquired cell identifier, so as to send uplink control information and / or uplink data according to the RNTI and the uplink authorization configuration resources, thereby enabling the terminal device to perform uplink transmission with low power consumption.

[0020] In a possible implementation, when the timer corresponding to the first configuration information times out, the first configuration information becomes invalid; otherwise, if the timer corresponding to the first configuration information does not time out, the first configuration information is valid.

[0021] In a possible implementation, when the terminal device is in an RRC connected state, the first configuration information is invalid; when the terminal device is in an RRC inactive state, the first configuration information is valid.

[0022] In a possible implementation, when the terminal device fails to transmit data using the RNTI configured by the first configuration information, the first configuration information becomes invalid; otherwise, the first configuration information is valid.

[0023] In the above three methods, if the first configuration information becomes invalid, the terminal device cannot continue to use the first configuration information, for example, it cannot perform one or more of the following according to the first configuration information: receiving downlink control information; receiving downlink data; sending uplink control information; sending uplink data. This can avoid invalid data transmission by the terminal device. When the first configuration information becomes invalid, the terminal device can release the RNTI and time-frequency resources configured by the first configuration information in a timely manner, thereby saving network resources.

[0024] The second aspect of the embodiments of the present application provides a communication device, which may be a terminal device, or a component in a terminal device, or a device that can be used in conjunction with a terminal device. The terminal device may be in an RRC inactive state. In one design, the device may include a module corresponding to the method / operation / step / action described in the first aspect, and the module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device may include a processing module and a transceiver module. Exemplarily,

[0025] The processing module is used to obtain a cell identifier; obtain first configuration information according to the cell identifier, and there is a corresponding relationship between the cell identifier and the first configuration information; the first configuration information is used to configure the RNTI;

[0026] The processing module is further configured to control the transceiver module to perform one or more of the following according to the first configuration information:

[0027] Receive downlink control information; receive downlink data; send uplink control information; send uplink data.

[0028] In a possible implementation manner, the transceiver module is further used to receive second configuration information, where the second configuration information is used to configure a correspondence between the cell identifier and the first configuration information.

[0029] In a possible implementation manner, there is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier;

[0030] The processing module is specifically configured to obtain a wireless network temporary identifier according to the cell identifier.

[0031] In a possible implementation manner, the first configuration information is also used to configure time-frequency resources of downlink control information.

[0032] In a possible implementation manner, there is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information;

[0033] The processing module is specifically used to obtain the wireless network temporary identifier and the time-frequency resources of the downlink control information according to the cell identifier.

[0034] In a possible implementation manner, there is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information;

[0035] The processing module is further used to obtain a synchronization signal block index, where the synchronization signal block index corresponds to the time-frequency resources of the downlink control information;

[0036] The processing module is specifically used to obtain a wireless network temporary identifier according to a cell identifier; and to obtain time-frequency resources of downlink control information according to the cell identifier and a synchronization signal block index.

[0037] In a possible implementation manner, when a timer corresponding to the first configuration information times out, the first configuration information becomes invalid.

[0038] In a possible implementation manner, when in a radio resource control connected state, the first configuration information is invalid.

[0039] In a possible implementation manner, when data transmission using the wireless network temporary identifier fails, the first configuration information becomes invalid.

[0040] In a third aspect of an embodiment of the present application, a communication device is provided, which includes a processor for implementing the method described in the first aspect above. The device may also include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the device can implement the method described in the first aspect above. The device may also include a communication interface, which is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other device may be a network device, etc. In one possible design, the device includes:

[0041] A memory for storing program instructions;

[0042] The processor is configured to obtain a cell identifier; obtain first configuration information according to the cell identifier, where the cell identifier corresponds to the first configuration information; the first configuration information is used to configure the RNTI; and control the communication interface to perform one or more of the following according to the first configuration information:

[0043] Receive downlink control information; receive downlink data; send uplink control information; send uplink data.

[0044] In a possible implementation manner, the processor controls the communication interface to further execute: receiving second configuration information, where the second configuration information is used to configure a correspondence between the cell identifier and the first configuration information.

[0045] In a possible implementation manner, there is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier;

[0046] The processor is specifically configured to obtain a wireless network temporary identifier according to the cell identifier.

[0047] In a possible implementation manner, the first configuration information is also used to configure time-frequency resources of downlink control information.

[0048] In a possible implementation manner, there is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information;

[0049] The processor is specifically configured to obtain a wireless network temporary identifier and time-frequency resources of downlink control information according to the cell identifier.

[0050] In a possible implementation manner, there is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information;

[0051] The processor is further used to obtain a synchronization signal block index, where the synchronization signal block index corresponds to the time-frequency resources of the downlink control information;

[0052] The processor is specifically used to obtain a wireless network temporary identifier according to a cell identifier; and to obtain time-frequency resources of downlink control information according to the cell identifier and a synchronization signal block index.

[0053] In a possible implementation manner, when a timer corresponding to the first configuration information times out, the first configuration information becomes invalid.

[0054] In a possible implementation manner, when in a radio resource control connected state, the first configuration information is invalid.

[0055] In a possible implementation manner, when data transmission using the wireless network temporary identifier fails, the first configuration information becomes invalid.

[0056] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute the method provided in the first aspect.

[0057] The fifth aspect of the embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method provided in the first aspect. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0058] A sixth aspect of an embodiment of the present application provides a configuration information acquisition method, which may be executed by a first network device, or may be executed by a component (such as a processor, a chip, or a chip system) of the first network device, including:

[0059] The first network device sends identification information of the terminal device, where the identification information of the terminal device is used to request third configuration information corresponding to the terminal device; the third configuration information is used to configure the RNTI;

[0060] The first network device receives third configuration information; the third configuration information corresponds to the cell identifier of the second cell.

[0061] The first network device may be a network device that establishes an RRC connection with the terminal device before the terminal device switches to the RRC inactive state, the first network device may send identification information of the terminal device to the second network device, and the first network device may receive third configuration information from the second network device. The second network device may be a network device in a notification area configured for the terminal device, the number of the second network devices may be one or more, and the coverage of the second network device includes one or more second cells. When the terminal device is in the RRC inactive state, it can move within the notification area.

[0062] In the sixth aspect of the embodiment of the present application, the first network device informs the second network device of the identification information of the terminal device so that the second network device allocates third configuration information to the terminal device, so that the second network device can allocate different RNTIs to different terminal devices, and the terminal device can obtain an exclusive RNTI for use when it is in an RRC inactive state.

[0063] In one possible implementation, the first network device sends fourth configuration information to the terminal device, and the first fourth configuration information is used to configure the correspondence between the cell identifier of the second cell and the third configuration information, so that the terminal device can obtain the first configuration information based on the acquired cell identifier, thereby enabling the terminal device to perform data transmission with low power consumption.

[0064] In one possible implementation, the correspondence between the third configuration information and the cell identifier of the second cell may be a correspondence between the RNTI and the cell identifier of the second cell, so that the terminal device can obtain the RNTI corresponding to the cell identifier based on the acquired cell identifier of the second cell, thereby enabling the terminal device to obtain the RNTI used when it is in an RRC inactive state. Using the RNTI can achieve data transmission with low power consumption.

[0065] In a possible implementation, the third configuration information may be used not only to configure the RNTI but also to configure the time-frequency resources of the downlink control information so that the terminal device can quickly detect the downlink control information.

[0066] In one possible implementation, the correspondence between the third configuration information and the cell identifier of the second cell may be that the RNTI and the time-frequency resources of the downlink control information correspond to the cell identifier of the second cell, so that the terminal device can quickly obtain the downlink control information based on the acquired cell identifier of the second cell.

[0067] In one possible implementation, there is a correspondence between the time-frequency resources of the downlink control information and the synchronization signal block index, so that the terminal device can obtain the RNTI corresponding to the cell identifier of the second cell according to the obtained cell identifier; and obtain the time-frequency resources of the downlink control information according to the obtained cell identifier and the synchronization signal block index, so that the terminal device can quickly obtain accurate time-frequency resources for the downlink control information.

[0068] In a possible implementation, the first network device receives fifth configuration information, and the fifth configuration information is used to configure a timer corresponding to the third configuration information, so that the first network device can determine whether the third configuration information is valid. The fourth configuration information sent by the first network device to the terminal device can also be used to configure a timer corresponding to the third configuration information, so that the terminal device can determine whether the first configuration information is valid, thereby avoiding invalid data transmission by the terminal device. The fifth configuration information may come from the second network device, and may be sent together with the third configuration information, or may be sent separately.

[0069] In a possible implementation, when the timer corresponding to the third configuration information times out, the third configuration information becomes invalid; otherwise, if the timer corresponding to the third configuration information does not time out, the third configuration information is valid.

[0070] In a possible implementation, when the terminal device is in an RRC connected state, the third configuration information is invalid; when the terminal device is not in an RRC connected state, the third configuration information is valid.

[0071] In a possible implementation manner, when the terminal device is not in the notification area, the third configuration information is invalid.

[0072] A seventh aspect of an embodiment of the present application provides a communication device, which may be a first network device, or a component in the first network device, or a device that can be used in conjunction with the first network device. In one design, the device may include a module corresponding to the method / operation / step / action described in the sixth aspect, and the module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device may include a transceiver module, and the transceiver module may include a sending module and a receiving module. Exemplarily,

[0073] A sending module, used for sending identification information of a terminal device, where the identification information of the terminal device is used for requesting third configuration information corresponding to the terminal device; the third configuration information is used for configuring the RNTI;

[0074] The receiving module is used to receive third configuration information; the third configuration information corresponds to the cell identifier of the second cell.

[0075] In an eighth aspect of an embodiment of the present application, a communication device is provided, which includes a processor for implementing the method described in the sixth aspect above. The device may also include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the device can implement the method described in the sixth aspect above. The device may also include a communication interface, which is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other device may be a terminal device, a second network device, etc. In one possible design, the device includes:

[0076] A memory for storing program instructions;

[0077] A processor is used to control the communication interface to send identification information of the terminal device, the identification information of the terminal device is used to request third configuration information corresponding to the terminal device; the third configuration information is used to configure RNTI; the communication interface is controlled to receive the third configuration information; there is a corresponding relationship between the third configuration information and the cell identification of the second cell.

[0078] A ninth aspect of an embodiment of the present application provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute the method provided in the sixth aspect.

[0079] The tenth aspect of the embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method provided in the sixth aspect. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0080] An eleventh aspect of the embodiments of the present application provides a method for acquiring configuration information, which may be performed by a second network device or by a component (such as a processor, a chip, or a chip system) of a first network device, including:

[0081] The second network device receives identification information of the terminal device;

[0082] The second network device sends third configuration information according to the identification information of the terminal device; the third configuration information is used to configure RNTI, and there is a corresponding relationship between the third configuration information and the cell identification of the second cell.

[0083] The second network device may be a network device in a notification area configured for the terminal device, the number of the second network devices may be one or more, and the coverage of the second network device includes one or more second cells. When the terminal device is in an RRC inactive state, it can move within the notification area. The second network device may receive identification information of the terminal device from the first network device, and may send third configuration information to the first network device. The first network device may be a network device that establishes an RRC connection with the terminal device before the terminal device switches to the RRC inactive state.

[0084] In the eleventh aspect of the embodiment of the present application, the second network device sends the third configuration information to the first network device based on the identification information of the terminal device, so that the second network device can allocate different RNTIs to different terminal devices, and then the terminal device can obtain an exclusive RNTI for use when it is in an RRC inactive state, which is used to enable the terminal device to transmit data with the second network device with low power consumption, and can also save the signaling overhead of the second network device.

[0085] In one possible implementation, the correspondence between the third configuration information and the cell identifier of the second cell may be a correspondence between the RNTI and the cell identifier of the second cell, so that the terminal device can obtain the RNTI corresponding to the cell identifier based on the acquired cell identifier of the second cell, thereby enabling the terminal device to obtain the RNTI used when it is in an RRC inactive state. Using the RNTI can achieve data transmission with low power consumption.

[0086] In a possible implementation, the third configuration information may be used not only to configure the RNTI but also to configure the time-frequency resources of the downlink control information so that the terminal device can quickly detect the downlink control information.

[0087] In one possible implementation, the correspondence between the third configuration information and the cell identifier of the second cell may be that the RNTI and the time-frequency resources of the downlink control information correspond to the cell identifier of the second cell, so that the terminal device can quickly obtain the downlink control information based on the acquired cell identifier of the second cell.

[0088] In one possible implementation, there is a correspondence between the time-frequency resources of the downlink control information and the synchronization signal block index, so that the terminal device can obtain the RNTI corresponding to the cell identifier of the second cell according to the obtained cell identifier; and obtain the time-frequency resources of the downlink control information according to the obtained cell identifier and the synchronization signal block index, so that the terminal device can quickly obtain accurate time-frequency resources for the downlink control information.

[0089] In a possible implementation, the second network device sends fifth configuration information to the first network device, and the fifth configuration information is used to configure a timer corresponding to the third configuration information so that the first network device can determine whether the third configuration information is valid. The fifth configuration information can be sent together with the third configuration information or separately.

[0090] In a possible implementation, when the timer corresponding to the third configuration information times out, the third configuration information becomes invalid; otherwise, if the timer corresponding to the third configuration information does not time out, the third configuration information is valid.

[0091] In a possible implementation, when the terminal device is in an RRC connected state, the third configuration information is invalid; when the terminal device is not in an RRC connected state, the third configuration information is valid.

[0092] In a possible implementation manner, when the terminal device is not in the notification area, the third configuration information is invalid.

[0093] When the third configuration information is invalid, the second network device will not continue to transmit data with the terminal device, which can avoid invalid data transmission by the second network device. When the third configuration information is invalid, the second network device can release the RNTI and time-frequency resources configured by the third configuration information in time, thereby saving network resources.

[0094] The twelfth aspect of the embodiment of the present application provides a communication device, which may be a second network device, or a component in the second network device, or a device that can be used in conjunction with the second network device. In one design, the device may include a module corresponding to the method / operation / step / action described in the eleventh aspect, and the module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device may include a transceiver module, and the transceiver module may include a sending module and a receiving module. Exemplarily,

[0095] A receiving module, used to receive identification information of a terminal device;

[0096] The sending module is used to send third configuration information according to the identification information of the terminal device; the third configuration information is used to configure the wireless network temporary identification; the third configuration information corresponds to the cell identification of the second cell.

[0097] In a thirteenth aspect of an embodiment of the present application, a communication device is provided, which includes a processor for implementing the method described in the eleventh aspect above. The device may also include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the device can implement the method described in the eleventh aspect above. The device may also include a communication interface, which is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other device may be a first network device, etc. In one possible design, the device includes:

[0098] A memory for storing program instructions;

[0099] The processor is used to control the communication interface receiving module to receive the identification information of the terminal device; according to the identification information of the terminal device, the communication interface is controlled to send the third configuration information; the third configuration information is used to configure the wireless network temporary identification; the third configuration information corresponds to the cell identification of the second cell.

[0100] A fourteenth aspect of an embodiment of the present application provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute the method provided in the eleventh aspect.

[0101] The fifteenth aspect of the embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method provided in the eleventh aspect. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0102] The sixteenth aspect of the embodiment of the present application provides a communication system, which includes the terminal device described in the second aspect, and optionally also includes the first network device described in the seventh aspect and the second network device described in the twelfth aspect. Or, the communication system includes the terminal device described in the third aspect, and optionally also includes the first network device described in the eighth aspect and the second network device described in the thirteenth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0103] Figure 1 Schematic diagram of transitions between three RRC states;

[0104] Figure 2 is a schematic diagram of time-frequency resources;

[0105] Figure 3 An example diagram of configuration information for controlling resource sets and configuration information for search spaces;

[0106] Figure 4 is a schematic diagram of a paging process;

[0107] Figure 5 A schematic diagram of a network architecture for applying an embodiment of the present application;

[0108] Figure 6 A schematic diagram of another network architecture to which the present invention is applied;

[0109] Figure 7 A flowchart of a method for obtaining configuration information provided in an embodiment of the present application;

[0110] Figure 8 A flowchart of another configuration information acquisition method provided in an embodiment of the present application;

[0111] Fig. 9 An example diagram provided for an embodiment of the present application;

[0112] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0113] Fig.11 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0114] Fig.12 Another structural schematic diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0115] In order to better understand the technical solutions provided by the embodiments of the present application, the technical terms involved in the embodiments of the present application are first introduced.

[0116] (1)RRC connected state, RRC idle state, RRC inactive state

[0117] In a communication system, a terminal device can access a network device and communicate with the access network device. During or after accessing the network device, the terminal device can establish a radio resource control (RRC) connection with the network device. When the RRC connection is established, the RRC state of the terminal device is the RRC connected state.

[0118] When the terminal device is in the RRC connected state, it can send uplink data to the network device through an uplink data channel, such as PUSCH. The uplink data can be, for example, unicast data of the terminal device. The terminal device can also receive downlink data from the network device through a downlink data channel, such as PDSCH. The downlink data can be, for example, unicast data for the terminal device.

[0119] The network device may use the RRC release process, for example, by sending an RRC release message to the terminal device, so that the terminal device is converted from the RRC connected state to the RRC idle state, or the terminal device is converted from the RRC connected state to the RRC inactive state.

[0120] When the terminal device is in the RRC idle state, the connection between the terminal device and the network device and the connection between the terminal device and the core network are released. In this case, the terminal device can receive one or more of paging messages, broadcast channels or system information from the network device, but cannot perform unicast data transmission with the network device, for example, it cannot receive downlink data transmitted from the network device via PDSCH; or it cannot send uplink data to the network device via PUSCH.

[0121] When the terminal device is in the RRC inactive state, the connection between the terminal device and the network device is released, but the connection between the terminal device and the core network can be maintained. In this case, the terminal device can receive one or more of a paging message, a broadcast channel or system information from the network device. At present, for a terminal device in the RRC inactive state, the network device will retain the registration information of the terminal device, but suspend most of the air interface behaviors between the terminal device and the network device, such as the terminal device suspends receiving the PDCCH that schedules the unicast transmission of the terminal device. It can be understood that the RRC inactive state is a state that saves power for the terminal device. However, by executing the embodiments of the present application, a terminal device in the RRC inactive state can perform unicast data transmission with the network device.

[0122] In one possible implementation, the transitions between the RRC connected state, the RRC idle state, and the RRC inactive state may be referred to in Figure 1 When the terminal device is not connected to the network device, it can establish an RRC connection with the network device through the RRC setup process. When the RRC connection is established, the RRC state of the terminal device is the RRC connected state. The network device can convert the RRC state of the terminal device from the RRC connected state to the RRC idle state or the RRC inactive state through the RRC release process.

[0123] A terminal device in the RRC idle state can use the RRC establishment process to convert the RRC state of the terminal device from the RRC idle state to the RRC connected state. The RRC establishment process initiated by a terminal device in the RRC idle state can be triggered by a paging message sent by a network device or by a high-level trigger of the terminal device. For example, the high-level trigger of the terminal device means that the terminal device needs to send data to the network device.

[0124] For a terminal device in an RRC idle state, the RRC establishment process may include: the terminal device sends an RRC setup request message to a network device; when the network device receives the RRC setup request message, it may send an RRC setup message to the terminal device, where the RRC setup message is used to indicate that the network device agrees to establish an RRC connection, so that the RRC state of the terminal device is switched from the RRC idle state to the RRC connected state; if the network device does not agree to establish the RRC connection, it may send an RRC reject message to the terminal device, so that the RRC state of the terminal device remains in the RRC idle state.

[0125] A terminal device in an RRC inactive state can be converted from an RRC inactive state to an RRC connected state through an RRC establishment process or an RRC resume process. A terminal device in an RRC inactive state initiates an RRC resume process, which can be triggered by a paging message sent by a network device or by a higher layer of the terminal device. The network device can convert the RRC state of the terminal device from an RRC inactive state to an RRC idle state through an RRC release process.

[0126] Among them, the RRC recovery process may include: the terminal device sends an RRC recovery request (resumerequest) message to the network device; when the network device receives the RRC recovery request message, it can send an RRC establishment message or an RRC recovery message to the terminal device, so that the RRC state of the terminal device is switched from the RRC inactive state to the RRC connected state; if the network device does not agree to establish or restore the RRC connection, it can send an RRC rejection message to the terminal device, so that the RRC state of the terminal device remains in the RRC inactive state.

[0127] The above RRC connected state may also be described as RRC-connected state or connected state, etc., the above RRC idle state may also be described as RRC-idle state or idle state, etc., and the above RRC inactive state may also be described as RRC-inactive state, RRC deactivated state or RRC third state, etc. In the embodiments of the present application, the RRC connected state, RRC idle state and RRC inactive state are used as examples, and other names or terms used to describe these three states should fall within the protection scope of the embodiments of the present application.

[0128] (2) Time-frequency resources for downlink control information

[0129] In order to facilitate the understanding of the time-frequency resources of downlink control information, the time-frequency resources are first introduced. Figure 2 Take the time-frequency resources shown as an example. Figure 2 The specific numerical values ​​are used for example only and do not constitute a limitation on the embodiments of the present application. Figure 2In the , a resource block group (RBG) includes 6 consecutive resource blocks (RB) in the frequency domain; an RB includes 12 subcarriers in the frequency domain; a time slot usually includes 14 symbols in the time domain; a resource element (RE) includes one subcarrier in the frequency domain and one symbol in the time domain. The symbol can be an orthogonal frequency division multiplexing (OFDM) symbol, a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM) symbol, etc.

[0130] The time-frequency resources for downlink control information may also be described as searching for time-frequency resources for downlink control information, or detecting time-frequency resources for downlink control information, or searching for a range of time-frequency resources for downlink control information. The time-frequency resources for downlink control information include time-frequency resources determined according to the configuration information of CORESET and the configuration information of SearchSpace, and the time-frequency resources are used to search for downlink control information. Or described as the time-frequency resources for downlink control information indicated by the configuration information of CORESET and the configuration information of SearchSpace.

[0131] Exemplarily, the configuration information of CORESET is used to configure the frequency domain resource location (frequencyDomainResources) and the time domain resource length (duration). Among them, frequencyDomainResources can indicate the RBG available to the terminal device in the frequency domain through a bitmap. Each bit in the bitmap indicates whether the corresponding RBG belongs to the CORESET. For example, the value of a bit in the bitmap is "1", indicating that the RBG corresponding to the bit belongs to the CORESET; the value of the bit is "0", indicating that the RBG corresponding to the bit does not belong to the CORESET. The time domain resource length (duration) is used to configure the number of symbols occupied by CORESET, and the value range is usually 1 to 3, indicating that 1, 2 or 3 symbols are occupied. The time domain resource length (duration) in the configuration information of CORESET is used to configure the time domain length for searching DCI. The specific time domain position for searching DCI can be configured by the configuration information of SearchSpace.

[0132] Exemplarily, the configuration information of SearchSpace is used to configure the detection period and offset (monitoringSlotPeriodicityAndOffset), the detection slot length (duration), and the detection symbol position (monitoringSymbolsWithinSlot). Among them, monitoringSlotPeriodicityAndOffset is used to configure the period and offset (offset) of SearchSpace, so that the starting slot (slot) position of SearchSpace in the period can be determined. Offset refers to the offset of the starting slot of SearchSpace relative to the starting slot of the period in the period, and monitoringSlotPeriodicityAndOffset is in slots. For example, monitoringSlotPeriodicityAndOffset = (10,4), which means that the period of SearchSpace is 10 slots, and the starting slot of SearchSpace is offset by 4 slots relative to the starting slot of the period. The detection slot length (duration) is used to configure the number of consecutive slots occupied by SearchSpace. monitoringSymbolsWithinSlot is used to configure the position of the starting symbol in the slot.

[0133] For example, the configuration information of CORESET and SearchSpace are as follows: Figure 3 Take this as an example for description. Figure 3 In the configuration information of SearchSpace, monitoringSlotPeriodicityAndOffset is used to indicate the period and offset of SearchSpace, that is, to indicate the starting slot position of SearchSpace in the period, and detection slot length (duration) is used to indicate that SearchSpace occupies 3 consecutive slots. According to monitoringSlotPeriodicityAndOffset and detection slot length (duration), it can be determined that there may be DCI on 3 slots in a period. These 3 slots are Figure 3 There are three black rectangles in a cycle, and one black rectangle represents a slot. monitoringSymbolsWithinSlot is used to indicate the position of the starting symbol in the slot. Figure 3The starting symbol in the slot is the second symbol in the slot. The time domain resource length (duration) in CORESET is used to indicate the time domain length that can be used to search for DCI in the slot. Figure 3 The time domain resource length (duration) is 3, which means that the number of symbols to search for DCI is 3. According to the configuration information of CORESET and SearchSpace, it can be determined that Figure 3 The time-frequency resources represented by the rectangular block with a medium gray background are the time-frequency resources for searching for DCI, and the DCI detection range in each rectangular block with a black background is the same.

[0134] (3) Radio Network Temporary Identifier (RNTI)

[0135] RNTI can be used to identify different terminal devices in the network. For example, the following Table 1 lists different RNTI value ranges.

[0136] Table 1

[0137]

[0138]

[0139] In Table 1, RNTI values ​​in the range of 0001–FFEF (hexadecimal) can be configured by a network device and allocated to a terminal device, so that the terminal device can perform random access, uplink and downlink scheduling, power control, or frame structure configuration.

[0140] In different scenarios, RNTI may be public, for example, the network device can configure the same RNTI value for multiple terminal devices; RNTI may also be terminal device specific, for example, the network device configures different RNTI values ​​for different terminal devices. Usually, the network device configures different RNTIs for different terminal devices for the same DCI time-frequency resources, so that different terminal devices can distinguish their own DCI through RNTI. For example, terminal device 1 searches for DCI based on the time-frequency resources of DCI, and uses RNTI to descramble the CRC of DCI. If the descrambling is successful, the content of the DCI can be obtained.

[0141] (4) Inactive-RNTI (I-RNTI) and Notification Area

[0142] I-RNTI is configured by the network device for a terminal device in an RRC inactive state and is a bit string of 40 bits in length. I-RNTI is unique within the notification area configured by the network device for the terminal device. The network device may configure a notification area for the terminal device during the RRC release process, for example, an RRC release message is used to configure the notification area. A terminal device in an RRC inactive state may move within the notification area. The notification area may also be described as a radio access network-based notification area (RNA), or a mobile range, etc. In an embodiment of the present application, the notification area is described as RNA as an example. RNA may include the range covered by one or more network devices.

[0143] In RNA, a terminal device in an RRC inactive state can determine whether it is paged based on whether the paging message contains the terminal device's dedicated I-RNTI. Figure 4 The paging process shown is introduced. Figure 4 In the RNA, the first network device refers to the network device that triggers the terminal device to switch from the RRC connected state to the RRC inactive state, that is, the network device that establishes an RRC connection with the terminal device before the terminal device switches to the RRC inactive state; the second network device refers to the network device in the RNA, and the number of the second network devices can be one or more. The RNA includes the coverage of the second network device, which may include the coverage of the first network device, or may not include the coverage of the first network device, depending on the RNA configured by the first network device for the terminal device. The RNA may include the coverage of one or more second network devices.

[0144] The core network element believes that the terminal device in the RRC inactive state is still within the coverage of the first network device. Therefore, when the network side has a downlink message to send, the core network element sends a paging message to the first network device, triggering the paging of the first network device, that is, Figure 4 Step 1 in the first network device. The first network device does not know which second network device in the RNA is within the coverage range of the RRC inactive terminal device at this time, so it sends a paging indication to the second network device in the RNA, that is, Figure 4 Step 2 in the paging procedure. The second network device initiates paging to the terminal device during the paging opportunity, that is, Figure 4 Follow step 3 in the

[0145] The second network device initiates paging by sending a paging message to the terminal device. The PDSCH carrying the paging message is scheduled by the DCI, and the CRC of the DCI is scrambled by the P-RNTI (valued as FFFE, hexadecimal) in Table 1. It can be understood that the paging message sent by the network device to multiple terminal devices is scheduled by the DCI scrambled by the same P-RNTI. The paging message can include 32 terminal device identifiers (identify, ID), and the terminal device identifier can be an I-RNTI or a next generation-fifth generation-temporary mobile user identity (next generation-5 th generation–S-temporarymobile subscriber identity, NG-5G-S-TMSI), I-RNTI is used to paging terminal devices in the RRC inactive state, that is, paging terminal devices in the RRC inactive state uses I-RNTI; NG-5G-S-TMSI is used to paging terminal devices in the RRC idle state, that is, paging terminal devices in the RRC idle state uses NG-5G-S-TMSI. It can be understood that the paging message includes I-RNTI, which is used to paging terminal devices in the RRC inactive state. The paging messages for different terminal devices carry different I-RNTIs.

[0146] The terminal device uses P-RNTI to descramble DCI, reads the paging message according to the instructions of DCI, and determines whether the network has paged it based on whether its own I-RNTI is included in the paging message. For example, terminal device 1 and terminal device 2 in the RRC inactive state successfully descramble DCI using P-RNTI and receive a paging message scheduled by the DCI. The paging message includes I-RNTI A, which is the I-RNTI of terminal device 1. Then terminal device 1 determines that it has been paged; while the I-RNTI of terminal device 2 is I-RNTI B, which does not match the I-RNTI A included in the paging message, and terminal device 2 determines that it has not been paged.

[0147] P-RNTI is used to scramble and descramble the DCI in the broadcast information / multicast information, but all the terminal devices being paged use P-RNTI to descramble the DCI in the broadcast information / multicast information. In other words, P-RNTI is not exclusive to the terminal device, that is, different RNTIs for scrambling and descrambling are not configured for different terminal devices. The RNTI exclusive to the terminal device can also be understood as different RNTIs used by different terminal devices within a specific DCI time-frequency resource in a cell. For different terminal devices, the I-RNTI is different, but the I-RNTI is not used for scrambling and descrambling of DCI. Therefore, a terminal device in an RRC inactive state cannot obtain an exclusive RNTI for descrambling DCI. In view of this, an embodiment of the present application provides a configuration information acquisition method and device, which can enable a terminal device to obtain an exclusive RNTI used when it is in an RRC inactive state, and the RNTI can be used for descrambling DCI. Further, the terminal device can obtain DCI and can receive downlink data according to the DCI. Optionally, the RNTI is also used to send uplink control information and / or uplink data. By adopting the embodiments of the present application, data transmission between a terminal device in an RRC inactive state and a network device can be achieved.

[0148] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are an "or" relationship, for example, A / B can represent A or B. And, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "The following one (one) or more (one)" or similar expressions refer to any combination of these items, including any combination of single items (one) or plural items (one). For example, one or more of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions in the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish between technical features with basically the same or similar functions. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not limit them to be necessarily different.

[0149] The technology described in the embodiments of the present application can be used in various communication systems, such as a fourth generation (4G) communication system, a 4.5G communication system, a 5G communication system, a system integrating multiple communication systems, or a communication system that evolves in the future. For example, a long term evolution (LTE) system, a new radio (NR) system, a wireless fidelity (WiFi) system, and a communication system related to the third generation partnership project (3GPP), and other such communication systems.

[0150] The terminal device (also referred to as a terminal) involved in the embodiments of the present application may be a device with a wireless transceiver function, which may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on the water surface (such as a ship, etc.); it may also be deployed in the air (for example, on an airplane, a balloon, and a satellite, etc.). The terminal device may be a user equipment (UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device with a wireless communication function. Exemplarily, the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function. The terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a smart vehicle terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. In the embodiments of the present application, the device for realizing the function of the terminal device may be the terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device or used in combination with the terminal device. In the technical solution provided in the embodiments of the present application, the technical solution provided in the embodiments of the present application is described by taking the terminal device as an example of the device for realizing the function of the terminal device.

[0151] As an example but not limitation, in the present application, the terminal may be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0152] In the present application, the terminal may be a terminal in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing human-machine interconnection and intelligent network of things-to-things interconnection. The terminal in the present application may be a terminal in machine type communication (MTC). The terminal of the present application may be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into a vehicle as one or more components or units. The vehicle may implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit. Therefore, the embodiments of the present application may be applied to vehicle networking, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V), etc.

[0153] The network device involved in the embodiment of the present application may include a base station (BS), which may be a device deployed in a wireless access network that can communicate wirelessly with a terminal device. Among them, the base station may have multiple forms, such as a macro base station, a micro base station, a relay station, and an access point. Exemplarily, the network device involved in the embodiment of the present application may be a base station in 5G or a base station in long-term evolution (LTE), wherein the base station in 5G may also be called a transmission reception point (TRP) or a next-generation base station node (nextgeneration Node B, gNB). In the embodiment of the present application, the device for implementing the function of the network device may be a network device; it may also be a device that can support the network device to implement the function, such as a chip system, which can be installed in the network device or used in combination with the network device. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, the technical solution provided in the embodiment of the present application is described by taking the device for implementing the function of the network device as a network device as an example.

[0154] The embodiment of the present application also relates to a core network element. The core network element can also be described as a core network device or a core network functional entity, etc., which refers to a network element in the core network that provides service support for the terminal device. The core network element can be a core network element in an LTE system, a core network element in a 5G system, or a core network element in a future communication system. Taking the 5G system as an example, the core network element may include an access and mobility management function (AMF) entity, a session management function (SMF) entity, and a user plane function (UPF) entity. Among them, the AMF entity can be responsible for access management and mobility management of the terminal device; the SMF entity can be responsible for session management, such as establishing a session; the UPF entity can be responsible for connecting to an external network, such as receiving data from an external network, transmitting the data to the terminal device through a network device, etc. It should be noted that in the embodiment of the present application, the entity can also be described as a network element or a functional entity, etc. For example, the AMF entity can also be described as an AMF network element or an AMF functional entity or AMF, etc.

[0155] See also Figure 5, is a schematic diagram of a network architecture for applying the embodiment of the present application. The network architecture includes a terminal device 501, a first network device 502 and a second network device 503. It should be noted that, Figure 5 The device form and number of devices shown are for illustrative purposes only and do not constitute a limitation on the examples of the present application. For example, multiple second network devices may be included.

[0156] In one implementation, the first network device 502 may be a network device that establishes an RRC connection with the terminal device 501 before the terminal device 501 switches to the RRC inactive state; the second network device 503 may be a network device in the RNA of the terminal device 501, and the number of second network devices 503 may be more than one, depending on the situation. The RNA of the terminal device 501 refers to the range within which the terminal device 501 can move when it is in the RRC inactive state. The specific range of the RNA is determined by the AMF entity.

[0157] exist Figure 5 In the network architecture shown, the coverage of the first network device 502 includes the first cell, the first cell is the cell where the terminal device 501 resides when it is in the RRC connection state, and the first network device 502 sends SSB in the first cell; the coverage of the second network device 503 includes the second cell, and the second network device 503 sends SSB in the second cell. The terminal device 501 moves out of the first cell, for example, from the first cell to the second cell, and the first network device 502 can trigger the terminal device 501 to switch from the RRC connection state to the RRC inactive state. The second cell can be a cell in RNA. RNA may include the first cell, then the second cell is the cell in RNA other than the first cell; RNA may not include the first cell, then the second cell is any cell in RNA.

[0158] After the terminal device 501 switches from the RRC connected state to the RRC inactive state, it can obtain the cell identifier according to the searched synchronization signal block, and obtain configuration information according to the cell identifier. The configuration information is used to configure the RNTI. There is a corresponding relationship between the cell identifier and the configuration information, so that the terminal device 501 can obtain the RNTI used when it is in the RRC inactive state. When the terminal device 501 in the RRC inactive state obtains the RNTI, it can descramble the DCI according to the RNTI to obtain the content of the DCI; further, it can receive downlink data according to the PDSCH scheduled by the DCI. Alternatively, when the terminal device 501 in the RRC inactive state obtains the RNTI, it can directly receive downlink data according to the RNTI. When the terminal device 501 in the RRC inactive state obtains the RNTI, it can scramble the uplink control information according to the RNTI to send the uplink control information; further, the uplink control information can schedule the uplink data, so as to send the uplink data. Alternatively, the terminal device 501 in the RRC inactive state can directly send uplink data according to the RNTI when obtaining the RNTI. Different terminal devices in the RRC inactive state can obtain different RNTIs, so that the terminal device can obtain a dedicated RNTI.

[0159] In one implementation, the first network device 502 may be a network device to which the terminal device 501 is connected before it moves; the second network device 503 may be a network device to which the terminal device 501 is connected or to which it will be connected after it moves. The coverage of the first network device 502 is a first cell, which may be a cell where the terminal device 501 is located before it moves; the coverage of the second network device 503 is a second cell, which may be a cell where the terminal device 501 is located after it moves.

[0160] After moving, the terminal device 501 obtains the cell identifier of the second cell, and obtains configuration information according to the cell identifier. The configuration information is used to configure RNTI. There is a corresponding relationship between the cell identifier and the configuration information, so that the terminal device 501 after moving can obtain RNTI.

[0161] See also Figure 6 , is a schematic diagram of another network architecture to which the embodiment of the present application is applied. The network architecture includes a terminal device 601 and a network device 602. It should be noted that, Figure 6 The device form and number of devices shown are for illustrative purposes only and do not constitute a limitation on the examples of this application.

[0162] Figure 6 and Figure 5 The difference is that Figure 6In the figure, the coverage of the network device 602 includes the first cell and the second cell. The first cell is the cell where the terminal device 601 resides when it is in the RRC connected state. In actual applications, the number of second cells may be multiple. The terminal device 601 moves out of the first cell, for example, from the first cell to the second cell, and the network device 602 may trigger the terminal device 601 to switch from the RRC connected state to the RRC inactive state. The second cell may be a cell in the RNA. The network device 602 may send SSBs in the same cell, for example, sending SSBs in the first cell; it may also send SSBs in multiple cells, for example, part of the SSBs are sent in the first cell, and the other part of the SSBs are sent in the second cell.

[0163] After the terminal device 601 switches from the RRC connected state to the RRC inactive state, it searches for the synchronization signal block in the second cell, obtains the cell identifier of the second cell, and obtains configuration information based on the cell identifier. The configuration information is used to configure the RNTI, so that the terminal device 601 in the RRC inactive state can receive DCI in the second cell based on the RNTI, and further receive downlink data in the second cell. The terminal device 601 in the RRC inactive state can also send uplink control information in the second cell based on the RNTI, and further send uplink data in the second cell. Different terminal devices in the RRC inactive state can obtain different RNTIs, so that the terminal device can obtain an exclusive RNTI.

[0164] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0165] The configuration information acquisition method provided by the embodiment of the present application will be introduced below in conjunction with the accompanying drawings. It should be noted that during the introduction, the names of the information or data exchanged between the terminal device and the network device are used as examples and do not constitute a limitation on the embodiment of the present application.

[0166] See also Figure 7 , is a flow chart of a method for obtaining configuration information provided in an embodiment of the present application, and the flow may include but is not limited to the following steps:

[0167] Step 701, obtaining a cell identifier.

[0168] The network device coverage may include one or more cells, for example, the coverage of a network device may include three cells. A cell ID may also be described as a cell identification code, a cell number, or an area identification information, etc., to distinguish different cells. In the embodiment of the present application, the two names of cell and cell ID are used for example and do not constitute a limitation on the embodiment of the present application.

[0169] The terminal device obtains the cell identifier. In one implementation, the terminal device may obtain the cell identifier through the detected SSB.

[0170] For example, when the terminal device needs to determine the cell to reside in and / or perform downlink synchronization, it searches for SSB at a predefined frequency point or within a predefined frequency range. SSB includes the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the physical broadcast channel (PBCH). The following examples illustrate PSS and SSS.

[0171] PSS sequence value d PSS according to There are three candidate sequences, which can be expressed as:

[0172]

[0173] in, x(i+7)=(x(i+4)+x(i))mod2, [x(6) x(5) x(4) x(3)x(2) x(1) x(0)]=[1 1 1 0 1 1 0]. d PSS The sequence length is 128, d PSS (n) means d PSS The nth element in .

[0174] The sequence value d of SSS SSS according to There are 336 candidate sequences, which can be expressed as:

[0175] d SSS (n)=[1-2*x0((n+m0)mod127)]*[1-2*x1((n+m1)mod127)]

[0176]

[0177] in, x0(i+7)=(x0(i+4)+x0(i))mod2, x1(i+7)=(x1(i+1)+x1(i))mod2, [x0(6) x0(5) x0(4) x0(3) x0(2) x0(1) x0(0)]=[0 0 0 0 0 0 1], [x1(6)x1(5) x1(4) x1(3) x1(2) x1(1) x1(0)]=[0 0 0 0 0 0 1]. d SSS The sequence length is 128, d SSS (n) means d SSS The nth element in .

[0178] The terminal device can obtain the PSS pattern through sequence detection and then determine The SSS pattern can be obtained by sequence detection, and then determined According to Get the cell ID. Indicates the cell ID.

[0179] Optionally, the terminal device may obtain a synchronization signal block index (SSB index) through the detected SSB. The synchronization signal block index refers to the index of the detected SSB. The terminal device may determine the index of the SSB based on a demodulation reference signal (DMRS) sequence of the PBCH in the SSB and / or a payload of the PBCH.

[0180] Step 702: Obtain first configuration information according to the cell identifier.

[0181] The terminal device may obtain the first configuration information according to the cell identifier. The cell identifier corresponds to the first configuration information. The cell identifier may be a cell identifier obtained through the detected SSB, and the cell identifier may be an identifier of a cell in the RNA configured for the terminal device.

[0182] In one implementation, the correspondence may be notified to the terminal device by the network device, for example, the terminal device receives the second configuration information, and the second configuration information is used to configure the correspondence between the cell identifier and the first configuration information. The second configuration information may be sent to the terminal device by the first network device, and the first network device is the network device to which the terminal device is connected when it is in the RRC connection state. In addition to being used to configure the correspondence between the cell identifier and the first configuration information, the second configuration information may also be used to configure the correspondence between the cell identifiers of other cells in the RNA and other first configuration information. Other cells refer to cells other than the cell identified by the cell identifier in the RNA, and other first configuration information refers to the first configuration information corresponding to other cells. For example, the cell identifier is cell ID1, and the first configuration information corresponding to the cell identifier is the first configuration information A, and the RNA includes cell ID 1, cell ID 2, and cell ID 3; the second configuration information may be used to configure the correspondence between cell ID1 and the first configuration information A, and may also be used to configure the correspondence between cell ID 2 and the first configuration information B, and the correspondence between cell ID 3 and the first configuration information C. When the terminal device obtains the cell identifier, it can obtain the first configuration information corresponding to the cell identifier according to the corresponding relationship configured by the second configuration information. In another implementation, the corresponding relationship can be predefined, for example, the corresponding relationship between one or more cell identifiers and one or more first configuration information is defined in the protocol, then when the terminal device obtains the cell identifier, it can obtain the first configuration information corresponding to the cell identifier according to the corresponding relationship.

[0183] The terminal device obtains the first configuration information according to the cell identifier, which can be implemented in one or more of the following ways:

[0184] Mode 1: The first configuration information is used to configure the RNTI. The correspondence between the cell identifier and the first configuration information can be expressed as a correspondence between the cell identifier and the RNTI. When the terminal device obtains the cell identifier, it can obtain the RNTI according to the correspondence between the cell identifier and the RNTI.

[0185] Method 2: The first configuration information is used to configure the time-frequency resources of RNTI and DCI. The correspondence between the cell identifier and the first configuration information can be expressed as a correspondence between the cell identifier and the time-frequency resources of RNTI and DCI. When the terminal device obtains the cell identifier, it can obtain the time-frequency resources of RNTI and DCI according to the correspondence between the cell identifier and the time-frequency resources of RNTI and DCI.

[0186] Method three, the first configuration information is used to configure the time-frequency resources of RNTI and DCI, and the correspondence between the cell identifier and the first configuration information can be expressed as a correspondence between the cell identifier and the time-frequency resources of RNTI and DCI. In addition, the time-frequency resources of DCI also correspond to the synchronization signal block index. When the terminal device obtains the cell identifier and the synchronization signal block index, it can obtain the RNTI according to the correspondence between the cell identifier and the RNTI; it can obtain the time-frequency resources of DCI according to the correspondence between the cell identifier and the time-frequency resources of DCI, and the correspondence between the synchronization signal block index and the time-frequency resources of DCI.

[0187] The value of RNTI in the above three methods may be one of the value ranges in Table 1. The RNTI may be a newly defined RNTI, or may reuse one of the multiple RNTIs in Table 1.

[0188] In the embodiments of the present application, used for configuration may be understood as including, used for indicating, or used for determining, etc.

[0189] In addition to being used to configure RNTI, or in addition to being used to configure the time-frequency resources of RNTI and DCI, the first configuration information can also be used to configure available uplink configured-grant (CG) resources. The available uplink CG resources can be used by the terminal device to send uplink control information and / or uplink data.

[0190] One implementation method is that the uplink CG resources configured in the first configuration information are configured by the period of time domain resources, open-loop power control related parameters, waveform, redundant version sequence, number of repetitions, frequency hopping mode, resource allocation type, number of hybrid automatic repeat request (HARQ) processes, demodulation reference signal (DMRS) related parameters, modulation and coding scheme (MCS) table, resource block group (RBG) size, and one or more of time domain resources, frequency domain resources, or MCS.

[0191] Another implementation method is to configure one or more of the period of time domain resources, open-loop power control related parameters, waveform, redundant version sequence, number of repetitions, frequency hopping mode, resource allocation type, number of HARQ processes, demodulation reference signal related parameters, MCS table, or RBG size in the first configuration information, and then activate the CG-based PUSCH transmission by using the DCI encrypted with the RNTI configured in the first configuration information. The DCI can indicate one or more of time domain resources, frequency domain resources, DMRS, or MCS.

[0192] Step 703: perform one or more of the following according to the first configuration information:

[0193] Receive downlink control information; receive downlink data; send uplink control information; or send uplink data.

[0194] In an implementation method of receiving downlink control information according to the first configuration information, the first configuration information is used to configure RNTI, then the terminal device uses RNTI to descramble the CRC of DCI, and if the descrambling is successful, the content of DCI can be received and obtained. Optionally, the first configuration information is also used to configure the time-frequency resources of DCI, then the terminal device detects DCI on the time-frequency resources of DCI, and uses RNTI to descramble the CRC of DCI, and if the descrambling is successful, the content of DCI can be received and obtained. For example, the terminal device obtains indication information in DCI, and the indication information is used to indicate the time-frequency resources of PDSCH.

[0195] In an implementation of receiving downlink data according to the first configuration information, the first configuration information is used to configure the time-frequency resources of the RNTI and the DCI, and the terminal device receives the downlink data scheduled by the DCI when the DCI is obtained according to the time-frequency resources of the RNTI and the DCI. For example, if the DCI includes indication information for indicating the time-frequency resources of the PDSCH, the terminal device can receive the downlink data carried on the PDSCH according to the indication information.

[0196] Optionally, when obtaining DCI, the terminal device sends uplink control information and / or uplink data according to the indication information in the DCI, and the indication information can be used to indicate the time and frequency resources of the uplink control information and / or uplink data.

[0197] In an implementation of sending uplink control information according to the first configuration information, the first configuration information is used to configure uplink CG resources and RNTI, and the terminal device uses RNTI to generate a sequence, uses the sequence to scramble the uplink control information and sends the uplink control information according to the uplink CG resources. Alternatively, the terminal device uses RNTI to scramble the uplink control information and sends the uplink control information according to the uplink CG resources.

[0198] In an implementation method of sending uplink data according to the first configuration information, the first configuration information is used to configure the uplink CG resource and RNTI, and the terminal device uses the RNTI to generate a sequence, uses the sequence to scramble the uplink data and sends the uplink data according to the uplink CG resource. Alternatively, the terminal device uses the RNTI to scramble the uplink data and sends the uplink data according to the uplink CG resource.

[0199] In an implementation method of sending uplink data according to the first configuration information, the first configuration information is used to configure RNTI, as well as one or more of the period of time domain resources, open-loop power control related parameters, waveform, redundant version sequence, number of repetitions, frequency hopping mode, resource allocation type, number of HARQ processes, demodulation reference signal related parameters, MCS table, or RBG size. When the terminal device obtains DCI according to RNTI, it activates CG-based PUSCH transmission according to DCI, generates a sequence using RNTI, scrambles the uplink data using the sequence, and sends the uplink data according to one or more of the time domain resources, frequency domain resources, DMRS, or MCS indicated by the DCI. Alternatively, when the terminal device obtains DCI according to RNTI, it activates CG-based PUSCH transmission according to DCI, scrambles the uplink data using RNTI, and sends the uplink data according to one or more of the time domain resources, frequency domain resources, DMRS, or MCS indicated by the DCI.

[0200] If the first configuration information is valid, the terminal device may execute step 703. The terminal device may determine whether the first configuration information is valid in one or a combination of the following ways: Valid means that the first configuration information can continue to be used; invalid means that the first configuration information cannot continue to be used.

[0201] Method 1: When the timer corresponding to the first configuration information times out, the first configuration information becomes invalid; conversely, if the timer corresponding to the first configuration information has not timed out, the first configuration information is valid. The timer configuration information corresponding to the first configuration information can be notified to the terminal device by the network device. For example, the second configuration information received by the terminal device is used to configure the timer corresponding to the first configuration information in addition to configuring the correspondence between the cell identifier and the first configuration information. For another example, the terminal device may receive the timer configuration information corresponding to the second configuration information and the first configuration information respectively, and the timer configuration information is used to configure the timer corresponding to the first configuration information. The timer corresponding to the first configuration information may also be predefined, for example, the timer corresponding to the first configuration information is defined in the protocol.

[0202] The timer corresponding to the first configuration information may be implemented in a variety of different ways.

[0203] For example, the timer corresponding to the first configuration information can be expressed as a start time to an end time, such as 2020 / 1 / 18 14:20:20 to 2020 / 1 / 18 14:30:20. Then the terminal device can match the current system time with the start time to the end time. If the current system time is within the range of the start time to the end time, the first configuration information is determined to be valid; otherwise, the first configuration information is determined to be invalid.

[0204] For another example, the timer corresponding to the first configuration information can be expressed as a time range, such as 20 minutes. Then the terminal device can calculate the difference between the current system time and the start time of entering the RRC inactive state. If the difference is within 20 minutes, it is determined that the first configuration information is valid; otherwise, it is determined that the first configuration information is invalid.

[0205] The timer corresponding to the first configuration information may be a timer corresponding to all the configuration information contained in the first configuration information, or may be a timer corresponding to part of the configuration information contained in the first configuration information. For example, the timer corresponding to the first configuration information may be a timer corresponding to the time-frequency resources of the DCI configured in the first configuration information, that is, the timer acts on the time-frequency resources of the DCI. When the timer corresponding to part of the configuration information contained in the first configuration information is invalid, the first configuration information may be considered invalid. For example, when the time-frequency resources of the DCI are invalid, the first configuration information may be considered invalid.

[0206] Method 2: When the terminal device is in the RRC connected state, the first configuration information is invalid. It can also be understood that the first configuration information is valid when the terminal device is in the RRC inactive state. When the terminal device receives a paging message from the network device, it can switch from the RRC inactive state to the RRC connected state, at which time the first configuration information is invalid. The network device can be the first network device or any network device in RNA. Alternatively, when the terminal device needs to send uplink data or uplink information, it can switch from the RRC inactive state to the RRC connected state, at which time the first configuration information is invalid.

[0207] When the terminal device is in the RRC connected state, the terminal device may release the first configuration information, that is, release the first configuration information corresponding to the cell identifier. If the terminal device moves during the RRC connected state, a cell switching process may be triggered.

[0208] Method three, when the terminal device fails to transmit data using RNTI, the first configuration information becomes invalid. The RNTI may be, for example, the RNTI configured by the first configuration information. The terminal device uses RNTI to transmit data, which may be that the terminal device uses RNTI to generate a sequence, uses the sequence to scramble the uplink data, and sends the uplink data; or the terminal device uses RNTI to scramble the uplink data and sends the uplink data. For example, the terminal device uses RNTI to scramble the uplink data and sends the uplink data, but after sending the uplink data, no feedback is received from the network device indicating successful reception, then it is determined that the RNTI is invalid, and then the first configuration information is determined to be invalid. At this time, if the terminal device needs to send uplink data, it needs to re-initiate the random access process through the random access channel (RACH).

[0209] The above three methods are used for examples and do not constitute limitations on the embodiments of the present application.

[0210] The terminal device in the RRC inactive state can perform steps 701 to 703, so that the terminal device in the RRC inactive state can obtain RNTI and perform data transmission in the RRC inactive state. It can be understood that Figure 7 The application scenario of the embodiment shown is not limited to the terminal device in the RRC inactive state. For example, in the cell switching scenario, the terminal device switches from one cell to another cell and maintains the RRC connection state. This scenario can also be used. Figure 7 The illustrated embodiment ensures the transmission of data.

[0211] exist Figure 7 In the illustrated embodiment, when the terminal device obtains the cell identifier, it obtains the first configuration information for configuring the RNTI based on the cell identifier, so that the terminal device can obtain the RNTI used when it is in the RRC inactive state, thereby enabling the terminal device in the RRC inactive state to receive downlink data and / or transmit uplink data.

[0212] See also Figure 8 , is a flow chart of another configuration information acquisition method provided in an embodiment of the present application. The flow is introduced from an interactive perspective and may include but is not limited to the following steps:

[0213] Step 804: UE1 detects SSB and obtains the cell identifier.

[0214] When UE1 is in the RRC inactive state, it can perform SSB detection for downlink synchronization. When UE1 detects SSB, it obtains the cell ID corresponding to the SSB according to the SSB, that is, obtains the cell ID of the cell where UE1 resides. Optionally, UE1 obtains the index of the SSB according to the SSB. UE1 obtains the cell ID and the index of the SSB according to the SSB, see Figure 7 The specific description of step 701 in the illustrated embodiment will not be repeated here.

[0215] The SSB may be an SSB from the first network device or an SSB from the second network device.

[0216] Step 805: UE1 determines first configuration information according to the cell identifier.

[0217] UE1 determines the first configuration information according to the cell identifier and the fourth configuration information, wherein the fourth configuration information comes from the first network device, and details can be found in the specific description of step 803 .

[0218] In one implementation, UE1 determines the RNTI corresponding to the cell identifier according to the cell identifier and the correspondence between the cell identifier of the second cell configured by the fourth configuration information and the third configuration information (used to configure the RNTI), and uses the RNTI as the content configured by the first configuration information. For example, UE1 searches for the RNTI corresponding to the cell identifier in the table corresponding to the third configuration information according to the cell identifier, and uses the RNTI as the content configured by the first configuration information.

[0219] In one implementation, UE1 determines the RNTI and DCI time-frequency resources corresponding to the cell identifier based on the cell identifier and the correspondence between the cell identifier of the second cell configured by the fourth configuration information and the third configuration information (used to configure the RNTI and DCI time-frequency resources), and uses the RNTI and the DCI time-frequency resources as the content configured by the first configuration information. For example, UE1 searches the table corresponding to the third configuration information for the RNTI and the DCI time-frequency resources corresponding to the cell identifier based on the cell identifier, and uses the RNTI and the DCI time-frequency resources as the content configured by the first configuration information. If the DCI time-frequency resources in the first configuration information include multiple sets of time-frequency resources, UE1 can use the set of time-frequency resources used last time, or randomly select a set of time-frequency resources to use.

[0220] In one implementation, UE1 determines the first configuration information based on the cell identifier, the cell identifier of the second cell configured by the fourth configuration information, and the correspondence between the third configuration information (used to configure the time-frequency resources of RNTI and DCI, and the SSB index corresponding to the time-frequency resources of DCI). For example, UE1 searches the table corresponding to the third configuration information for the RNTI and the time-frequency resources of DCI corresponding to the cell identifier according to the cell identifier. If the time-frequency resources of the DCI include multiple sets of time-frequency resources, the time-frequency resources corresponding to the index of the detected SSB can be searched in the multiple sets of time-frequency resources, and the RNTI and the time-frequency resources are used as the content of the first configuration information configuration. Subsequently, UE1 switches to the RRC inactive state again, and when the SSB is detected, the RNTI and the time-frequency resources can be directly used.

[0221] In the above-mentioned implementations, the third configuration information is sent from the second network device to the first network device. For details, please refer to the description of step 802.

[0222] Step 806: UE1 performs one or more of the following according to the first configuration information:

[0223] Receive downlink control information; receive downlink data; send uplink control information; or send uplink data.

[0224] Step 806 can be found in Figure 7The specific description of step 703 in the illustrated embodiment will not be repeated here.

[0225] Steps 804 to 806 may be performed when UE1 is in an RRC inactive state.

[0226] In one implementation, for UE1 in the RRC inactive state, the second network device may determine whether the third configuration information is valid in one or more of the following ways.

[0227] Method 1: When the timer corresponding to the third configuration information times out, the third configuration information becomes invalid; otherwise, if the timer corresponding to the third configuration information does not time out, the third configuration information is valid. Figure 7 The description of the timer corresponding to the first configuration information in the illustrated embodiment will not be repeated here.

[0228] Method 2: When UE1 is in the RRC connected state, the third configuration information becomes invalid. It is understandable that when UE1 switches from the RRC inactive state to the RRC connected state, the third configuration information becomes invalid. When UE1 switches from the RRC inactive state to the RRC connected state, the connected network device may send a notification message to the second network device, and the notification message is used to indicate that UE1 is in the RRC connected state. If the network device to which UE1 is connected is one of the second network devices, then the network device sends a notification message to other second network devices, and the other second network devices determine that the third configuration information is invalid and release the third configuration information. If the network device to which UE1 is connected is the first network device, then the first network device sends a notification message to the second network device, and the second network device determines that the third configuration information is invalid and releases the third configuration information. The second network device may also learn that UE1 is in the RRC connected state in other ways.

[0229] Method three, when UE1 is not in RNA, the third configuration information is invalid. It can be understood that when UE1 leaves RNA, the third configuration information is invalid. If all network devices in RNA send downlink data to UE1 and do not receive feedback from UE1, it is considered that UE1 has left RNA. The AMF entity can know whether the downlink data sent by the network devices in RNA has received feedback from UE1. When the AMF entity learns that all downlink data sent by network devices in RNA have received feedback, the AMF entity sends a notification message to the second network device, which is used to indicate that UE1 has left RNA. Then, when the second network device receives the notification message, it can determine that the third configuration information is invalid and release the third configuration information. The second network device can also learn that UE1 has left RNA in other ways.

[0230] The above three methods are used for examples and do not constitute limitations on the embodiments of the present application.

[0231] In one implementation, for UE1 in an RRC inactive state, the first network device may determine whether the third configuration information is valid in one or more of the following ways.

[0232] Mode 1: When the timer corresponding to the third configuration information times out, the third configuration information becomes invalid; otherwise, if the timer corresponding to the third configuration information does not time out, the third configuration information is valid.

[0233] Method 2: When UE1 is in the RRC connection state, the third configuration information is invalid. When UE1 restores the RRC connection with the first network device, the first network device determines that the third configuration information configured by the second network device is invalid, and releases the third configuration information. When the network device to which UE1 is connected when it switches from the RRC inactive state to the RRC connection state is not the first network device, the first network device can learn from the network device, or learn through other methods that UE1 is in the RRC connection state. When the first network device determines that the third configuration information is invalid, the third configuration information is released.

[0234] Mode 3: When UE1 is not in RNA, the third configuration information is invalid. Please refer to Mode 3 of the second network device determining whether it is invalid, which will not be described here.

[0235] Optionally, step 801 to step 803 are also included before step 804.

[0236] Step 801: The first network device sends identification information of UE1 to the second network device. Correspondingly, the second network device receives the identification information of UE1 from the first network device.

[0237] Steps 801 to 803 may be performed when UE1 is in an RRC connected state. UE1 may be a terminal device in the network.

[0238] The first network device is the network device that establishes an RRC connection with UE1 before UE1 switches to the RRC inactive state, and the second network device is the network device in RNA. When UE1 is in the RRC connected state, it resides in the first cell within the coverage of the first network device. The cell within the coverage of the second network device is called the second cell. The number of second network devices can be one or more, and the number of second cells can be one or more. For ease of understanding, Figure 8 In the illustrated embodiment, a second network device and a second cell are taken as an example for description.

[0239] Among them, the identification information of UE1 is used to identify UE1, and may include but is not limited to: RNTI such as C-RNTI, CS-RNTI, MCS-C-RNTI or SP-CSI-RNTI used to identify the terminal device; International mobile subscriber identification number (IMSI); International mobile equipment identity (IMEI); equipment identification, etc.

[0240] The first network device sends the identification information of UE1 to the second network device. The identification information of UE1 is used to request the second network device to allocate third configuration information to UE1, and further, to request the second network device to allocate third configuration information corresponding to the second cell to the UE. The second network device can allocate different third configuration information corresponding to the second cell to different UEs.

[0241] Step 802: The second network device sends third configuration information to the first network device. Correspondingly, the first network device receives the third configuration information from the second network device.

[0242] In the case where the coverage of the second network device includes a second cell, the second network device allocates third configuration information to UE1 according to the identification information of UE1, and the third configuration information is the configuration information corresponding to the second cell. In the case where the coverage of the second network device includes multiple second cells, the second network device allocates one third configuration information to UE1 for each second cell according to the identification information of UE1. It can be understood that there is a corresponding relationship between the cell identification of one second cell and one third configuration information.

[0243] The third configuration information is used to configure RNTI; or used to configure the time-frequency resources of RNTI and DCI; or used to configure RNTI, the time-frequency resources of DCI, and the SSB index information corresponding to the time-frequency resources of DCI; or used to configure RNTI and uplink CG time-frequency resources.

[0244] Optionally, the second network device further sends a cell identifier of the second cell corresponding to the third configuration information to the first network device, so that the first network device learns the correspondence between the cell identifier of the second cell and the third configuration information.

[0245] Optionally, the second network device further sends fifth configuration information to the first network device, and the fifth configuration information is used to configure the correspondence between the third configuration information and the timer. Or it is described as the second network device further sending configuration information of the timer corresponding to the third configuration information to the first network device. The timer is used to determine or maintain the validity of the third configuration information.

[0246] Step 803: The first network device sends fourth configuration information to UE1. Correspondingly, UE1 receives the fourth configuration information from the first network device.

[0247] When receiving the third configuration information from the second network device, the first network device sends fourth configuration information to UE1, where the fourth configuration information is used to configure a correspondence between the cell identifier of the second cell and the third configuration information.

[0248] In one implementation, the third configuration information is used to configure the RNTI, and the correspondence between the cell identifier of the second cell configured by the fourth configuration information and the third configuration information can be expressed as in the following Table 2.1.

[0249] Table 2.1

[0250] The cell ID of the second cell RNTI ID-1 RNTI-1 ID-2 RNTI-2 … … ID-X RNTI-X

[0251] In Table 2.1, when the cell identifier of the second cell is ID-1, the corresponding RNTI is RNTI-1; when the cell identifier of the second cell is ID-2, the corresponding RNTI is RNTI-2; when the cell identifier of the second cell is ID-X, the corresponding RNTI is RNTI-X.

[0252] In one implementation, the third configuration information is used to configure the time-frequency resources of RNTI and DCI. The time-frequency resources of DCI may include one or more sets of time-frequency resources. A set of time-frequency resources corresponds to a CORESET configuration information and a SearchSpace configuration information. The correspondence between the cell identifier of the second cell configured by the fourth configuration information and the third configuration information can be expressed as shown in the following Table 2.2.

[0253] Table 2.2

[0254]

[0255] In Table 2.2, when the cell identifier of the second cell is ID-1, the corresponding RNTI is RNTI-1, corresponding to three sets of time-frequency resources.

[0256] In one implementation, the third configuration information is used to configure the time-frequency resources of RNTI and DCI, and the SSB index corresponding to the time-frequency resources of DCI. The correspondence between the cell identifier of the second cell configured by the fourth configuration information and the third configuration information can be expressed as shown in the following Table 2.3.

[0257] Table 2.3

[0258]

[0259] In Table 2.3, when the cell identifier of the second cell is ID-1, the corresponding RNTI is RNTI-1, corresponding to three sets of time-frequency resources, each set of time-frequency resources corresponds to one or more SSB indexes, for example, the second set of time-frequency resources corresponds to SSB-2 and SSB-3, and the third set of time-frequency resources corresponds to all SSBs (all). All SSBs represent the indexes of all SSBs within the SSB period. For example, if the SSB period includes 4 SSBs, then the indexes of all SSBs are SSB-1, SSB-2, SSB-3, and SSB-4. A set of time-frequency resources can correspond to one or more SSB indexes, and an SSB index can correspond to one or more sets of time-frequency resources. For example, in Table 2.3, SSB-1 can correspond to the first set of time-frequency resources whose cell identifier is ID-1 in the second cell, or it can correspond to the time-frequency resources whose cell identifier is ID-2 in the second cell.

[0260] In Table 2.3, SSB-X represents the index of one or more SSBs within the SSB period.

[0261] In one implementation, the third configuration information is used to configure the time-frequency resources of the RNTI and DCI, and the timer. The timer may be a timer corresponding to the third configuration information, or a timer corresponding to the RNTI, or a timer corresponding to the time-frequency resources of the DCI. The correspondence between the cell identifier of the second cell configured by the fourth configuration information and the third configuration information may be expressed as shown in the following Table 2.4.

[0262] Table 2.4

[0263]

[0264]

[0265] In Table 2.4, when the cell identifier of the second cell is ID-1, the corresponding RNTI is RNTI-1, corresponding to three sets of time-frequency resources, and each set of time-frequency resources corresponds to a timer. Alternatively, the three sets of time-frequency resources may correspond to the same timer. The timer is used to determine or maintain the validity of the third configuration information. For example, if a timer times out, the third configuration information corresponding to the timer is invalid.

[0266] The above Table 2.3 and Table 2.4 can be combined to obtain the following Table 2.5.

[0267] Table 2.5

[0268]

[0269] The above Tables 2.1 to 2.5 are used for example and do not constitute a limitation on the embodiments of the present application. It should be noted that Tables 2.1 to 2.5 are based on the correspondence between the cell identifier of the second cell and the third configuration information as an example. In actual applications, the correspondence between the cell identifier of the first cell and the configuration information can also be configured in a similar manner to the third configuration information.

[0270] When the UE1 in the RRC connected state receives the fourth configuration information, it may store the fourth configuration information, so that when switching to the RRC inactive state, it may determine the first configuration information according to the fourth configuration information.

[0271] After step 803, the first network device may trigger UE1 to switch from the RRC connected state to the RRC inactive state. For example, the first network device sends an RRC release message to UE1, so that UE1 switches from the RRC connected state to the RRC inactive state. When UE1 is in the RRC inactive state, steps 804 to 806 may be executed.

[0272] exist Figure 8 In the illustrated embodiment, the first network device obtains the third configuration information configured by the second network device for UE1, and sends the fourth configuration information to UE1, so that UE1 in the RRC inactive state obtains the first configuration information according to the acquired cell identifier, thereby enabling the terminal device in the RRC inactive state to receive downlink data and / or transmit uplink data.

[0273] Exemplarily, when UE1 is in the RRC connected state, the content of the fourth configuration information configuration is shown in Table 3 below. The first row in Table 3 can be expressed as follows: the configuration information corresponding to the cell with cell ID = 337 includes RNTI-1 as ABCD (hexadecimal); the time-frequency resources of DCI include three sets of time-frequency resources; the first set of time-frequency resources is CORESET-1.1+SearchSpace-1.1, the corresponding SSB index is SSB-1, and the corresponding timer is 100 seconds; the second set of time-frequency resources is CORESET-1.2+SearchSpace-1.2, the corresponding SSB index is SSB-2 and SSB-3, and the corresponding timer is 1000 frames; the third set of time-frequency resources is CORESET-1.3+SearchSpace-1.3, the corresponding SSB index is SSB-3, and the corresponding timer is 200 frames. Among them, in the first set of time-frequency resources, the configuration information of CORESET-1.1 includes: frequency domain resource position (frequencyDomainResources) = "111011011110011", time domain resource length (duration) = 3; the configuration information of SearchSpace-1.1 includes: detection period and offset (monitoringSlotPeriodicityAndOffset) = S10,4 (in slots), detection slot length (duration) = 2 (slot), detection symbol position (monitoringSymbolsWithinSlot) = 0 (i.e., detection starts from the first symbol in the slot).

[0274] Table 3

[0275]

[0276] After UE1 switches from RRC connected state to RRC inactive state, it may move in RNA, and the network side does not know where UE1 has moved. Therefore, UE1 will periodically detect SSB to determine the cell where it resides and perform downlink synchronization. Fig. 9 As shown, when the UE detects an SSB, it obtains cell ID = 337 and SSB index = 1 (ie, SSB-1) according to the SSB. The first row of configuration information can be determined from Table 3, that is, RNTI-1 is ABCD (hexadecimal), the time and frequency resources of DCI are CORESET-1.1+SearchSpace-1.1, the SSB index is SSB-1, and the valid time is 100 seconds (starting from when UE1 enters the RRC inactive state).

[0277] UE1 Fig. 9In the time-frequency resources of the DCI shown, RNTI-1=ABCD is used to detect DCI. If DCI is detected, downlink data can be received according to the indication information in the DCI, such as receiving and demodulating data in the PDSCH. UE1 can also send uplink data according to the indication information in the DCI, such as sending uplink data / sequence through one or more of the physical uplink control channel (PUCCH), PUSCH or physical random access channel (PRACH). UE1 can also send uplink data / sequence that is not related to DCI, such as using RNTI-1=ABCD to scramble the uplink data on the pre-configured time-frequency resources and sending the uplink data through PUSCH.

[0278] Figure 8 The embodiment shown is based on Figure 5 The network architecture shown in Figure 6 The network architecture shown in FIG. 8 is shown in FIG. 8 , then steps 801 to 803 can be simplified as follows: the network device allocates third configuration information to UE1 for each cell, and sends fourth configuration information to UE1, where the fourth configuration information is used to configure the correspondence between the cell identifier of each cell within the coverage area of ​​the network device and the third configuration information. When UE1 in an RRC inactive state obtains the cell identifier, it can obtain the first configuration information according to the cell identifier and the fourth configuration information, thereby enabling data transmission between the terminal device in an RRC inactive state and the network device.

[0279] Corresponding to the method provided in the above method embodiment, the present application embodiment also provides a corresponding device, including a module for executing the corresponding module of the above embodiment. The module can be software, hardware, or a combination of software and hardware.

[0280] Fig.10 A schematic diagram of the structure of a communication device is given. The communication device 1000 can be a network device (a first network device or a second network device), or a terminal device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

[0281] The communication device 1000 may include one or more processors 1001, which may also be referred to as a processing unit or a processing module, etc., and may implement certain control functions. The processor 1001 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a distributed unit (DU) or a centralized unit (CU), etc.), execute software programs, and process data of software programs.

[0282] In an optional design, the processor 1001 may also store instructions and / or data 1003, and the instructions and / or data 1003 can be executed by the processor 1001, so that the communication device 1000 executes the method described in the above method embodiment.

[0283] In another optional design, the processor 1001 may include a transceiver unit for implementing the receiving and sending functions. For example, the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0284] Optionally, the communication device 1000 may include one or more memories 1002, on which instructions 1004 may be stored, and the instructions 1004 may be executed on the processor 1001, so that the communication device 1000 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 1002. Optionally, instructions and / or data may also be stored in the processor 1001. The processor 1001 and the memory 1002 may be provided separately or integrated together. For example, the corresponding relationship described in the above method embodiment may be stored in the memory 1002, or in the processor 1001.

[0285] Optionally, the communication device 1000 may further include a transceiver 1005 and / or an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver device or a transceiver module, etc., and is used to implement a transceiver function.

[0286] Optionally, in the embodiment of the present application, when the communication device 1000 is a terminal device, it can be used to execute Figure 7 Steps 701 to 703 in, or Figure 8Steps 804 to 806 in the communication device 1000; when the communication device 1000 is a first network device, it can be used to perform Figure 8 Steps 801 to 803 in the communication device 1000; when the communication device 1000 is a second network device, it can be used to perform Figure 8 Step 801 and step 802 in .

[0287] The processor and transceiver described in the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0288] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the device described in the present application is not limited thereto, and the structure of the communication device may not be limited thereto. Fig.10 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0289] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0290] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and / or instructions;

[0291] (3) ASIC, such as modem (MSM);

[0292] (4) Modules that can be embedded in other devices;

[0293] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, machine equipment, home equipment, medical equipment, industrial equipment, etc.;

[0294] (6)Others

[0295] Fig.11 A schematic diagram of the structure of a terminal device is provided. The terminal device can be applied to Figure 5 or Figure 6 In the network architecture shown. For ease of explanation, Fig.11 Only the main components of the terminal device are shown. Fig.11 As shown, the terminal device 1100 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program. The memory is mainly used to store the software program and data. The radio frequency circuit is mainly used for converting the baseband signal and the radio frequency signal and processing the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The input-output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0296] When the terminal device is turned on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit processes the baseband signal to obtain the RF signal and sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, and the RF signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and processes the data.

[0297] For ease of explanation, Fig.11 Only one memory and processor are shown. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.

[0298] As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal device, execute software programs, and process software program data. Fig.11The processor in integrates the functions of the baseband processor and the central processing unit. Those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, which are interconnected through technologies such as buses. Those skilled in the art will understand that the terminal device may include multiple baseband processors to adapt to different network standards, and the terminal device may include multiple central processing units to enhance its processing capabilities. The various components of the terminal device may be connected through various buses. The baseband processor may also be described as a baseband processing circuit or a baseband processing chip. The central processing unit may also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built into the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0299] In one example, the antenna and control circuit with transceiver functions may be regarded as the transceiver module 1111 of the terminal device 1100, and the processor with processing function may be regarded as the processing module 1112 of the terminal device 1100. Fig.11 As shown, the terminal device 1100 includes a transceiver module 1111 and a processing module 1112. The transceiver module may also be referred to as a transceiver, a transceiver, a transceiver device or a transceiver unit, etc. Optionally, the device used to implement the receiving function in the transceiver module 1111 may be regarded as a receiving module, and the device used to implement the sending function in the transceiver module 1111 may be regarded as a sending module, that is, the transceiver module 1111 includes a receiving module and a sending module. Exemplarily, the receiving module may also be referred to as a receiver, a receiver, a receiving circuit or a receiving unit, etc., and the sending module may be referred to as a transmitter, a transmitter, a transmitting circuit or a sending unit, etc. Optionally, the above-mentioned receiving module and the sending module may be one module integrated together, or may be multiple independent modules. The above-mentioned receiving module and the sending module may be located in one geographical location, or may be dispersed in multiple geographical locations.

[0300] like Fig.12 As shown, another embodiment of the present application provides a communication device 1200. The device can be a terminal device, or a component of a terminal device (for example, an integrated circuit, a chip, etc.). Alternatively, the device can be a network device (a first network device or a second network device), or a component of a network device (for example, an integrated circuit, a chip, etc.). The device can also be other communication modules for implementing the method in the method embodiment of the present application. The communication device 1200 may include: a processing module 1202 (or a processing unit). Optionally, it may also include a transceiver module 1201 (or a transceiver unit) and a storage module 1203 (or a storage unit).

[0301] In one possible design, Fig.12One or more modules in the may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors and transceivers; or by one or more processors, memories and transceivers, which are not limited in the embodiments of the present application. The processor, memory, and transceiver may be provided separately or integrated.

[0302] The communication device 1200 has the function of implementing the terminal device described in the embodiment of the present application. For example, the communication device 1200 includes a module or unit or means (means) corresponding to the terminal device step described in the embodiment of the present application, and the function or unit or means (means) can be implemented by software, or by hardware, or by hardware to execute the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment. Alternatively, the communication device 1200 has the function of implementing the network device described in the embodiment of the present application. For example, the communication device 1200 includes a first network device to execute the first network device described in the embodiment of the present application. The module or unit or means (means), the function or unit or means (means) can be implemented by software, or by hardware, or by hardware to execute the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment.

[0303] Optionally, each module in the communication device 1200 in the embodiment of the present application can be used to execute the embodiment of the present application. Figure 7 or Figure 8 The method described can also be used to execute a method in which the methods described in two or more of the above figures are combined with each other.

[0304] In one possible design, the communication device 1200 is a terminal device, which may include: a processing module 1202 and a transceiver module 1201.

[0305] The processing module 1202 is used to obtain a cell identifier; obtain first configuration information according to the cell identifier; there is a corresponding relationship between the cell identifier and the first configuration information; the first configuration information is used to configure a wireless network temporary identifier;

[0306] The processing module 1202 is further configured to control the transceiver module 1201 to perform one or more of the following according to the first configuration information:

[0307] Receive downlink control information; receive downlink data; send uplink control information; or send uplink data.

[0308] Optionally, the transceiver module 1202 is further used to receive second configuration information, where the second configuration information is used to configure a correspondence between the cell identifier and the first configuration information.

[0309] Optionally, there is a correspondence between the cell identifier and the first configuration information, specifically: there is a correspondence between the cell identifier and the wireless network temporary identifier; the processing module 1202 is specifically used to obtain the wireless network temporary identifier according to the cell identifier.

[0310] Optionally, the first configuration information is also used to configure time and frequency resources for downlink control information.

[0311] Optionally, there is a correspondence between the cell identifier and the first configuration information, specifically: there is a correspondence between the cell identifier and the wireless network temporary identifier and the time-frequency resources of the downlink control information; the processing module 1202 is specifically used to obtain the wireless network temporary identifier and the time-frequency resources of the downlink control information according to the cell identifier.

[0312] Optionally, there is a correspondence between the cell identifier and the first configuration information, specifically: there is a correspondence between the cell identifier and the wireless network temporary identifier and the time-frequency resources of the downlink control information; the processing module 1202 is also used to obtain the synchronization signal block index, and there is a correspondence between the synchronization signal block index and the time-frequency resources of the downlink control information; the processing module 1202 is specifically used to obtain the wireless network temporary identifier according to the cell identifier; and to obtain the time-frequency resources of the downlink control information according to the cell identifier and the synchronization signal block index.

[0313] Optionally, when a timer corresponding to the first configuration information times out, the first configuration information becomes invalid.

[0314] Optionally, when in a radio resource control connection state, the first configuration information is invalid.

[0315] Optionally, when data transmission using the wireless network temporary identifier fails, the first configuration information becomes invalid.

[0316] Optionally, the terminal device is in a radio resource control inactive state.

[0317] In one possible design, the communication device 1200 is a first network device, which may include: a transceiver module 1201, and the transceiver module 1201 may include a sending module 1211 and a receiving module 1221.

[0318] The sending module 1211 is used to send the identification information of the terminal device, where the identification information of the terminal device is used to request the third configuration information corresponding to the terminal device; the third configuration information is used to configure the wireless network temporary identification;

[0319] The receiving module 1221 is configured to receive third configuration information; the third configuration information corresponds to the cell identifier of the second cell.

[0320] Optionally, the sending module 1211 is further used to send fourth configuration information to the terminal device, where the fourth configuration information is used to configure the correspondence between the cell of the second cell and the third configuration information.

[0321] Optionally, there is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the cell identifier of the second cell.

[0322] Optionally, the third configuration information is also used to configure time and frequency resources for downlink control information.

[0323] Optionally, there is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the time-frequency resources of the downlink control information and the cell identifier of the second cell.

[0324] Optionally, the time-frequency resources of the downlink control information also correspond to the synchronization signal block index.

[0325] Optionally, the receiving module 1221 is further used to receive fifth configuration information, where the fifth configuration information is used to configure a timer corresponding to the third configuration information.

[0326] In one possible design, the communication device 1200 is a first network device, which may include: a transceiver module 1201, and the transceiver module 1201 may include a sending module 1211 and a receiving module 1221.

[0327] The receiving module 1221 is used to receive identification information of a terminal device;

[0328] The sending module 1211 is used to send third configuration information according to the identification information of the terminal device; the third configuration information is used to configure the wireless network temporary identification; the third configuration information corresponds to the cell identification of the second cell.

[0329] Optionally, there is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the cell identifier of the second cell.

[0330] Optionally, the third configuration information is also used to configure time and frequency resources for downlink control information.

[0331] Optionally, there is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the time-frequency resources of the downlink control information and the cell identifier of the second cell.

[0332] Optionally, the time-frequency resources of the downlink control information also correspond to the synchronization signal block index.

[0333] Optionally, the sending module is further used to send fifth configuration information, where the fifth configuration information is used to configure a timer corresponding to the third configuration information.

[0334] Optionally, when a timer corresponding to the third configuration information times out, the third configuration information becomes invalid.

[0335] Optionally, when the terminal device is in a radio resource control connection state, the third configuration information becomes invalid.

[0336] Optionally, when the terminal device is not in the notification area, the third configuration information is invalid.

[0337] It is understandable that some optional features in the embodiments of the present application may be implemented independently in certain scenarios without relying on other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to needs in certain scenarios. Accordingly, the devices provided in the embodiments of the present application may also realize these features or functions accordingly, which will not be elaborated here.

[0338] Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art can use various methods to implement the functions for corresponding applications, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present application.

[0339] It is understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0340] The scheme described in the present application can be implemented in various ways. For example, these technologies can be implemented in a combination of hardware, software or hardware. For hardware implementation, the processing unit for executing these technologies at a communication device (for example, a base station, a terminal, a network entity or a chip) can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, programmable logic devices, FPGAs, or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any traditional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration to implement.

[0341] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0342] The present application also provides a computer-readable medium on which a computer program is stored. When the computer program is executed by a computer, the functions of any of the above method embodiments are implemented.

[0343] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0344] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using 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 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 (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 a computer can access 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 high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0345] It is understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It is understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and 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 embodiment of the present application.

[0346] It can be understood that in the present application, "when", "if" and "if" all mean that the device will take corresponding actions under certain objective circumstances, and do not limit the time, nor do they require that the device must have a judgment action when it is implemented, nor do they mean that there are other limitations.

[0347] The term “simultaneously” in the present application may be understood as at the same time point, within a period of time, or within the same cycle.

[0348] In this application, elements expressed in the singular are intended to mean "one or more" rather than "one and only one", unless otherwise specified. In this application, "at least one" is intended to mean "one or more", and "more than one" is intended to mean "two or more", unless otherwise specified.

[0349] In addition, the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A can be singular or plural, and B can be singular or plural.

[0350] It can be understood that in each 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.

[0351] The corresponding relationships shown in each table in the present application can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present application. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present application, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0352] The predefined in the present application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0353] It will be appreciated by those skilled in the art that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0354] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0355] It is understood that the systems, devices and methods described in the present application can also 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.

[0356] 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.

[0357] 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.

[0358] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0359] The same or similar parts between the various embodiments in this application can refer to each other. In the various embodiments in this application, and the various implementation methods / implementation methods / implementation methods in each embodiment, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments and the various implementation methods / implementation methods / implementation methods in each embodiment are consistent and can be referenced to each other. The technical features in different embodiments and the various implementation methods / implementation methods / implementation methods in each embodiment can be combined to form new embodiments, implementation methods, implementation methods, or implementation methods according to their inherent logical relationships. The above-described implementation methods of this application do not constitute a limitation on the scope of protection of this application.

[0360] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the 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.

Claims

1. A communication method, characterized in that: The method is performed by a terminal device or a component of the terminal device, the terminal device is in a radio resource control inactive state, and the method includes: Acquire a cell identifier, where the cell identifier is an identifier of a cell in a notification area RNA based on a radio access network; According to the cell identifier, first configuration information is obtained; the cell identifier corresponds to the first configuration information; the first configuration information is used to configure a wireless network temporary identifier and time-frequency resources for downlink control information; According to the first configuration information, perform one or more of the following: receiving the downlink control information; receiving downlink data; sending uplink control information; or sending uplink data.

2. The method according to claim 1, characterized in that There is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information; Obtaining the first configuration information according to the cell identifier includes: The wireless network temporary identifier and the time-frequency resources of the downlink control information are obtained according to the cell identifier.

3. The method according to claim 1, characterized in that There is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information; The method further comprises: Acquire a synchronization signal block index, where the synchronization signal block index corresponds to the time-frequency resource of the downlink control information; Obtaining the first configuration information according to the cell identifier includes: According to the cell identifier, obtaining the wireless network temporary identifier; and The time-frequency resources of the downlink control information are obtained according to the cell identifier and the synchronization signal block index.

4. The method according to any one of claims 1 to 3, characterized in that When the timer corresponding to the first configuration information times out, the first configuration information becomes invalid.

5. The method according to any one of claims 1 to 3, characterized in that: When in the radio resource control connected state, the first configuration information is invalid.

6. The method according to any one of claims 1 to 3, characterized in that When data transmission using the wireless network temporary identifier fails, the first configuration information becomes invalid.

7. A communication method, characterized in that: include: Sending identification information of a terminal device, where the identification information of the terminal device is used to request third configuration information corresponding to the terminal device; The third configuration information is used to configure the time-frequency resources of the wireless network temporary identifier and the downlink control information; the terminal device is in a wireless resource control inactive state; Receive the third configuration information; the third configuration information corresponds to the cell identifier of the second cell, and the cell identifier is the identifier of the cell in the RNA.

8. The method according to claim 7, characterized in that The method further comprises: Send fourth configuration information to the terminal device, where the fourth configuration information is used to configure a correspondence between the cell identifier of the second cell and the third configuration information.

9. The method according to claim 7, characterized in that: There is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the time-frequency resources of the downlink control information and the cell identifier of the second cell.

10. The method according to claim 9, characterized in that The time-frequency resources of the downlink control information also correspond to the synchronization signal block index.

11. The method according to any one of claims 7 to 10, characterized in that: The method further comprises: Fifth configuration information is received, where the fifth configuration information is used to configure a timer corresponding to the third configuration information.

12. A communication method, characterized in that: include: Receiving identification information of a terminal device, where the terminal device is in a radio resource control inactive state; Sending third configuration information according to the identification information of the terminal device; The third configuration information is used to configure the wireless network temporary identifier and the time-frequency resources of the downlink control information; the third configuration information corresponds to the cell identifier of the second cell, and the cell identifier is the identifier of the cell in the RNA.

13. The method according to claim 12, characterized in that There is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the time-frequency resources of the downlink control information and the cell identifier of the second cell.

14. The method according to claim 13, characterized in that The time-frequency resources of the downlink control information also correspond to the synchronization signal block index.

15. The method according to any one of claims 12 to 14, characterized in that: The method further comprises: Send fifth configuration information, where the fifth configuration information is used to configure a timer corresponding to the third configuration information.

16. The method according to claim 15, characterized in that When the timer corresponding to the third configuration information times out, the third configuration information becomes invalid.

17. The method according to any one of claims 12 to 14, characterized in that: When the terminal device is in a radio resource control connection state, the third configuration information is invalid.

18. The method according to any one of claims 12 to 14, characterized in that: When the terminal device is not in the notification area, the third configuration information is invalid.

19. A communication device, characterized in that: The communication device is in a radio resource control inactive state, and the communication device includes a processing module and a transceiver module; The processing module is used to obtain a cell identifier, where the cell identifier is an identifier of a cell in a notification area RNA based on a wireless access network; obtain first configuration information according to the cell identifier; there is a corresponding relationship between the cell identifier and the first configuration information; the first configuration information is used to configure a wireless network temporary identifier and time-frequency resources for downlink control information; The processing module is further configured to control the transceiver module to perform one or more of the following according to the first configuration information: receiving the downlink control information; receiving downlink data; sending uplink control information; or sending uplink data.

20. The device according to claim 19, characterized in that There is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information; The processing module is specifically configured to obtain the wireless network temporary identifier and the time-frequency resources of the downlink control information according to the cell identifier.

21. The device according to claim 19, characterized in that There is a corresponding relationship between the cell identifier and the first configuration information, specifically: there is a corresponding relationship between the cell identifier and the wireless network temporary identifier and the time-frequency resource of the downlink control information; The processing module is further used to obtain a synchronization signal block index, where the synchronization signal block index corresponds to the time-frequency resource of the downlink control information; The processing module is specifically used to obtain the wireless network temporary identifier according to the cell identifier; and to obtain the time-frequency resources of the downlink control information according to the cell identifier and the synchronization signal block index.

22. The device according to claim 20 or 21, characterized in that When the timer corresponding to the first configuration information times out, the first configuration information becomes invalid.

23. The device according to claim 20 or 21, characterized in that When in the radio resource control connected state, the first configuration information is invalid.

24. The device according to claim 20 or 21, characterized in that When data transmission using the wireless network temporary identifier fails, the first configuration information becomes invalid.

25. A communication device, characterized in that: It includes a sending module and a receiving module; The sending module is used to send identification information of a terminal device, where the identification information of the terminal device is used to request third configuration information corresponding to the terminal device; the third configuration information is used to configure a wireless network temporary identification and time-frequency resources for downlink control information; the terminal device is in a radio resource control inactive state; The receiving module is used to receive the third configuration information; the third configuration information corresponds to the cell identifier of the second cell, and the cell identifier is the identifier of the cell in the RNA.

26. The device according to claim 25, characterized in that There is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the time-frequency resources of the downlink control information and the cell identifier of the second cell.

27. The device according to claim 26, characterized in that The time-frequency resources of the downlink control information also correspond to the synchronization signal block index.

28. The device according to any one of claims 25 to 27, characterized in that The receiving module is further used to receive fifth configuration information, where the fifth configuration information is used to configure a timer corresponding to the third configuration information.

29. A communication device, characterized in that: It includes a receiving module and a sending module; The receiving module is used to receive identification information of a terminal device, where the terminal device is in a radio resource control inactive state; The sending module is used to send third configuration information according to the identification information of the terminal device; the third configuration information is used to configure the time and frequency resources of the wireless network temporary identification and downlink control information; the third configuration information has a corresponding relationship with the cell identification of the second cell, and the cell identification is the identification of the cell in the RNA.

30. The device according to claim 29, characterized in that There is a correspondence between the third configuration information and the cell identifier of the second cell, specifically: there is a correspondence between the wireless network temporary identifier and the time-frequency resources of the downlink control information and the cell identifier of the second cell.

31. The device according to claim 30, characterized in that The time-frequency resources of the downlink control information also correspond to the synchronization signal block index.

32. The device according to any one of claims 29 to 31, characterized in that The sending module is further used to send fifth configuration information, where the fifth configuration information is used to configure a timer corresponding to the third configuration information.

33. The device according to claim 32, characterized in that When the timer corresponding to the third configuration information times out, the third configuration information becomes invalid.

34. The device according to any one of claims 29 to 31, characterized in that When the terminal device is in a radio resource control connection state, the third configuration information is invalid.

35. The device according to any one of claims 29 to 31, characterized in that When the terminal device is not in the notification area, the third configuration information is invalid.

36. A communication device, characterized in that: The device includes a unit / module for executing the method described in any one of claims 1 to 6, or a unit / module for executing the method described in any one of claims 7 to 11, or a unit / module for executing the method described in any one of claims 12 to 18.

37. A communication device, comprising: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device executes the method as described in any one of claims 1 to 6, or executes the method as described in any one of claims 7 to 11, or executes the method as described in any one of claims 12 to 18.

38. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instructions are executed, the computer performs the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 11, or the method according to any one of claims 12 to 18.

39. A chip, characterized in that: The invention comprises a processor coupled to a memory, wherein the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the apparatus executes the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 11, or the method according to any one of claims 12 to 18.

40. A communication system, characterized in that: The system comprises the apparatus of any one of claims 19 to 24, the apparatus of any one of claims 25 to 28, and the apparatus of any one of claims 29 to 35.

Images