Communication method and device

Abstract

The present application provides a communication method and device, which relate to the field of wireless communications. The extended discontinuous reception (eDRX) parameters in the radio resource control idle (RRC‑idle) state and the radio resource control inactive (RRC‑inactive) state can be configured for the terminal, and the message of the network side device is received according to the eDRX parameter, which can reduce the delay of the terminal receiving the paging message of the access network device and improve the user experience. The method includes: obtaining first parameter information and sending second parameter information to the core network device. Among them, the first parameter information is used to indicate the eDRX parameter, and the eDRX parameter is used for the first access network device to send a paging message in the eDRX mode; the second parameter information is used to indicate the changed eDRX parameter, and the changed eDRX parameter is used for the first access network device to send a paging message in the eDRX mode after sending the second parameter information.

Description

[0001] "This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 12, 2021, with application number 202110269593.1 and invention name "A communication method, terminal and network device", the entire contents of which are incorporated by reference in this application." Technical Field

[0002] The present application relates to the field of wireless communications, and in particular to a communication method and device. Background Art

[0003] In a communication system, in order to reduce power consumption, a terminal may adopt a discontinuous reception (DRX) mode to receive messages from a network side device (eg, an access network device or a core network device). Figure 1 As shown in (a) in FIG. 1 , the terminal can be awakened once in each DRX cycle to receive messages from the network side device, and is in a sleep state at other times, neither receiving nor sending messages. In the DRX mode, the terminal is in a sleep state most of the time, thereby reducing the power consumption of the terminal.

[0004] For terminals that require longer battery life, such as enhanced machine type communication (eMTC) terminals and narrowband Internet of Things (NB-IoT) terminals, the extended discontinuous reception (eDRX) mode can be used to receive messages from network-side devices to further reduce the power consumption of the terminal and extend the battery life. Compared with the DRX mode, the terminal using the eDRX mode stays in sleep mode for a longer time, consumes less power, and has a longer battery life.

[0005] Taking the eMTC terminal as an example, before receiving the message from the network side device, the eMTC terminal can receive the eDRX parameter 1 configured by the core network device and the eDRX parameter 2 configured by the access network device. Among them, the eDRX parameter 1 can indicate the position of the paging time window (PTW) for the eMTC terminal to receive the message from the core network device in the radio resource control idle (RRC-idle) state and the radio resource control inactive (RRC-inactive) state. Subsequently, in the RRC-idle state, the eMTC terminal can receive the message from the core network device according to the eDRX parameter 1. Specifically, it can be as follows Figure 1 As shown in (b) in the figure. In each eDRX cycle, the eMTC terminal can be awakened according to the DRX cycle at the position of the PTW to receive messages from the core network device, and is in sleep state at other times. Similarly, in the RRC-inactive state, the eMTC terminal can be awakened according to the DRX cycle at the position of the PTW in each eDRX cycle to receive messages from the core network device and the access network device. The eDRX parameter 2 can indicate the position of the paging occasion (paging occasion, PO) for the eMTC terminal to receive messages from the access network device in the RRC-inactive state. Subsequently, in the RRC-inactive state, the eMTC terminal can receive messages from the access network device outside the PTW in each eDRX cycle, for example, at the position of the PO. Specifically, it can be as follows Figure 1 As shown in (c) in .

[0006] At present, the new radio (NR) system has introduced a new type of terminal - reduced capability (REDCAP) terminal. REDCAP terminals have reduced hardware capabilities compared to legacy UEs. For example, the number of antennas, working bandwidth, processing time, etc. of REDCAP terminals are reduced compared to legacy UEs. However, REDCAP terminals have longer battery life, lower complexity, and lower cost. In order to further reduce the power consumption of REDCAP terminals and increase battery life, it is proposed to apply eDRX to the scenario where REDCAP terminals receive paging messages from network-side devices. However, in the RRC-inactive state, the situation in which REDCAP terminals receive paging messages from network-side devices is different from that of eMTC terminals. For example, in the RRC-inactive state, in addition to being awakened at the PO position in each eDRX cycle to receive paging messages from access network devices, REDCAP terminals can also be awakened periodically at the PTW position in each eDRX cycle to receive paging messages from access network devices. Therefore, it is not possible to configure eDRX parameters for REDCAP terminals using the method of configuring eDRX parameters for eMTC terminals. Therefore, how to configure eDRX parameters for REDCAP terminals in RRC-idle state and RRC-inactive state is a problem that needs to be solved urgently. Summary of the invention

[0007] The present application provides a communication method and apparatus, which can configure eDRX parameters in RRC-idle state and RRC-inactive state for a terminal, and receive messages from network-side devices according to the eDRX parameters, which can reduce the delay of the terminal receiving paging messages from access network devices and improve user experience.

[0008] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0009] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a first access network device, and the method includes: obtaining first parameter information, where the first parameter information is used to indicate an eDRX parameter, and the eDRX parameter is used for the first access network device to send a paging message using the eDRX mode; sending second parameter information to a core network device, where the second parameter information is used to indicate a changed eDRX parameter, and the changed eDRX parameter is used for the first access network device to send a paging message using the eDRX mode after sending the second parameter information.

[0010] In the method provided in the first aspect, the first access network device can change the eDRX parameters as needed, so that the terminal receives the paging message according to the changed eDRX parameters, thereby reducing the delay of the terminal first receiving the paging message of the access network device and improving the user experience. In addition, in this method, the first access network device and the core network device use the same eDRX parameters to send the paging message, which is relatively easy to implement and has high feasibility.

[0011] A possible implementation method is to send the second parameter information to the core network device when it is determined that the terminal enters the RRC-inactive state. Based on the above method, the eDRX parameters are changed only when it is determined that the terminal enters the RRC-inactive state, so that the terminal can use the changed eDRX parameters to receive the paging message of the first access network device in the RRC-inactive state, which can reduce the delay of the terminal receiving the paging message of the first access network device and improve the user experience.

[0012] In a possible implementation, the method further includes: determining whether to send second parameter information to the core network device according to the terminal capability information and / or the first condition information; wherein the terminal capability information is used to indicate at least one of the following information: whether the terminal supports eDRX, whether the terminal supports the RRC-inactive state, and whether the terminal supports eDRX in the RRC-inactive state; the first condition information is used to indicate whether the eDRX cycle included in the first parameter information is greater than or equal to the first time length. Based on the above method, the conditions for the first access network device to change the eDRX parameters are given.

[0013] In a possible implementation, the second parameter information is carried in an RRC inactive conversion report. Based on the above method, the first access network device may send the second parameter information to the core network device via the RRC inactive conversion report.

[0014] A possible implementation method for obtaining the first parameter information includes: receiving the first parameter information from the core network device, the first parameter information being carried in an initial context establishment request message, or carried in the core network auxiliary information in the RRC-inactive state. Based on the above method, the first parameter information can be obtained by the first access network device from the core network device.

[0015] In a possible implementation manner, the method further includes: sending second parameter information to the terminal. Based on the above method, the first access network device can send the second parameter information to the terminal, so that the terminal receives the paging message according to the changed eDRX parameter.

[0016] A possible implementation manner is to send the second parameter information to the terminal through an RRC release message or an RRC connection reconfiguration message.

[0017] In a possible implementation manner, the method further includes: sending parameter information of the first eDRX to the second access network device, the parameter information of the first eDRX including the first parameter information or the second parameter information. Based on the above method, the first access network device can send the first parameter information or the second parameter information to the second access network device, so that after the terminal moves to the coverage of the second access network device in the RRC-inactive state, the second access network device can page the terminal according to the first parameter information or the second parameter information.

[0018] In a possible implementation, the first eDRX parameter information also includes the DRX cycle of the access network device configured by the first access network device and at least one of the terminal-specific DRX cycles. Based on the above method, the second access network device can determine the DRX cycle of the second access network device paging the terminal.

[0019] In a possible implementation, the first eDRX parameter information is sent to the access network device in the tracking area list of the first access network device, and the identifier of the second access network device is included in the tracking area list of the first access network device. Based on the above method, the first access network device can send the first parameter information or the second parameter information to the access network device in the tracking area list of the first access network device, so that the access network device in the list can help the paging terminal.

[0020] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the first access network device can send the first parameter information or the second parameter information to the second access network device through the paging message of the access network device.

[0021] In a possible implementation, the first access network device includes a centralized unit and a distributed unit, and the first access network device obtains the first parameter information, including: the centralized unit obtains the first parameter information, and the method further includes: the centralized unit sends the parameter information of the second eDRX to the distributed unit, and the parameter information of the second eDRX includes the first parameter information or the second parameter information. Based on the above method, in the architecture where the first access network device is a centralized unit and a distributed unit are separated, after the centralized unit obtains the first parameter information or the second parameter information, it can send it to the distributed unit, so that the distributed unit pages the terminal according to the first parameter information or the second parameter information.

[0022] In a possible implementation, the second eDRX parameter information also includes the DRX cycle of the access network device configured by the centralized unit and the terminal-specific DRX cycle. Based on the above method, the distributed unit can determine the DRX cycle of the paging terminal.

[0023] In a possible implementation, the second eDRX parameter information is carried in a paging message. Based on the above method, the centralized unit may send the first parameter information or the second parameter information to the distributed unit via a paging message.

[0024] In a second aspect, an embodiment of the present application provides a communication method, applied to a terminal, the method comprising: obtaining first parameter information, the first parameter information being used to indicate an extended discontinuous reception eDRX parameter, the eDRX parameter being used by the terminal to receive a paging message in eDRX mode; receiving second parameter information from a first access network device, the second parameter information being used to indicate a changed eDRX parameter, the changed eDRX parameter being used by the terminal to receive a paging message in eDRX mode after receiving the second parameter information.

[0025] Based on the method provided in the second aspect, the terminal receives the paging message according to the changed eDRX parameter of the first access network device, so as to reduce the delay of the terminal first receiving the paging message of the access network device and improve the user experience. In addition, in this method, the terminal can use the same eDRX parameter to receive the paging message of the first access network device and the core network device, which is relatively easy to implement and has high feasibility.

[0026] A possible implementation method is to receive the second parameter information from the first access network device when entering the radio resource control inactive RRC-inactive state. Based on the above method, the terminal can use the changed eDRX parameters to receive the paging message of the first access network device in the RRC-inactive state, thereby reducing the delay of the terminal receiving the paging message of the first access network device and improving the user experience.

[0027] In a possible implementation, the second parameter information is carried in an RRC release message or an RRC connection reconfiguration message. Based on the above method, the terminal can receive the second parameter information through the RRC release message or the RRC connection reconfiguration message.

[0028] In a possible implementation, obtaining the first parameter information includes: receiving the first parameter information from a core network device, the first parameter information being carried in a non-access layer NAS message. Based on the above method, the terminal can receive the first parameter information from the core network device via a NAS message.

[0029] In a third aspect, an embodiment of the present application provides a communication method that can be applied to a core network device, the method comprising: sending first parameter information to a first access network device, the first parameter information being used to indicate an extended discontinuous reception eDRX parameter, the eDRX parameter being used for the core network device to send a paging message in eDRX mode; receiving second parameter information from the first access network device, the second parameter information being used to indicate a changed eDRX parameter, the changed eDRX parameter being used for the core network device to send a paging message in eDRX mode after receiving the second parameter information.

[0030] Based on the method provided in the third aspect, after the first access network device changes the eDRX parameters configured by the core network device, it can indicate the changed eDRX parameters to the core network device, so that the core network device can also send a paging message according to the changed eDRX parameters. In this way, the first access network device and the core network device can use the same eDRX parameters to send a paging message, which is relatively easy to implement and has high feasibility.

[0031] In a possible implementation, when the terminal enters the radio resource control inactive RRC-inactive state, the terminal receives the second parameter information from the first access network device. Based on the above method, the first access network device changes the eDRX parameters only when it determines that the terminal enters the RRC-inactive state, so that the terminal can use the changed eDRX parameters to receive the paging message of the first access network device in the RRC-inactive state, which can reduce the delay of the terminal receiving the paging message of the first access network device and improve the user experience.

[0032] In a possible implementation manner, the second parameter information is carried in an RRC inactive conversion report. Based on the above method, the core network device can receive the second parameter information through the RRC inactive conversion report.

[0033] In a possible implementation, the first parameter information is carried in an initial context establishment request message, or in core network auxiliary information in the RRC-inactive state. Based on the above method, the core network device can send the first parameter information to the first access network device via an initial context establishment request message or core network auxiliary information in the RRC-inactive state.

[0034] In a possible implementation, the method further includes: sending second parameter information to the terminal. Based on the above method, the first access network device can send the second parameter information to the terminal through the core network device, so that the terminal can receive the paging message according to the second parameter information.

[0035] In a possible implementation manner, the method further includes: sending first parameter information to the terminal, the first parameter information being carried in a non-access layer NAS message. Based on the above method, the core network device can send the first parameter information to the terminal via a NAS message, so that the terminal can receive a paging message according to the first parameter information before receiving the second parameter information.

[0036] In a fourth aspect, an embodiment of the present application provides a communication method that can be applied to a second access network device, the method comprising: receiving parameter information of a first eDRX from a first access network device, the parameter information of the first eDRX comprising first parameter information or second parameter information, the first parameter information being used to indicate an extended discontinuous reception eDRX parameter, the eDRX parameter being used by the first access network device to send a paging message to a terminal in an eDRX mode, the second parameter information being used to indicate a changed eDRX parameter, the changed eDRX parameter being used by the first access network device to send a paging message to the terminal in an eDRX mode after sending the second parameter information; and sending a paging message to the terminal according to the parameter information of the first eDRX.

[0037] Based on the method provided in the fourth aspect above, the second access network device can receive the first parameter information or the second parameter information from the first access network device, so as to subsequently page the terminal according to the first parameter information or the second parameter information.

[0038] In a possible implementation, the first eDRX parameter information also includes at least one of the DRX cycle of the access network device configured by the first access network device and the terminal-specific DRX cycle. Based on the above method, the second access network device can determine the DRX cycle of the paging terminal.

[0039] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the first access network device.

[0040] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the second access network device can receive the first parameter information or the second parameter information through the paging message of the access network device.

[0041] In a fifth aspect, an embodiment of the present application provides a communication method that can be applied to a first access network device, the method comprising: sending auxiliary information to a core network device, the auxiliary information being used to assist the core network device in configuring eDRX parameters; receiving first indication information from the core network device, the first indication information being used to indicate a first extended discontinuous reception eDRX parameter; and sending a paging message using the first eDRX parameter.

[0042] Based on the method provided in the fifth aspect, the first access network device can send auxiliary information to the core network device as needed to trigger the core network device to configure appropriate eDRX parameters, so that the terminal receives the paging message of the access network device with reduced latency and improved user experience. In addition, in the method, the first access network device and the core network device can use the same eDRX parameters to send paging messages, which is relatively easy to implement and has high feasibility.

[0043] In a possible implementation, the method further includes: obtaining first parameter information, the first parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used for the first access network device to send a paging message in an eDRX mode before receiving the first indication information. Based on the above method, the first access network device can obtain the first parameter information so as to determine whether the second eDRX parameter is suitable for the first access network device to send a paging message according to the first parameter information.

[0044] A possible implementation method is to send auxiliary information to the core network device when it is determined that the terminal is about to enter the radio resource control inactive RRC-inactive state. Based on the above method, when it is determined that the terminal enters the RRC-inactive state, the core network device is triggered to configure the eDRX parameters, so that the terminal can use the newly configured eDRX parameters in the RRC-inactive state to receive the paging message of the first access network device, which can reduce the delay of the terminal receiving the paging message of the first access network device and improve the user experience.

[0045] In a possible implementation, the method further includes: determining whether to send auxiliary information to the core network device according to the terminal capability information and / or the first condition information; wherein the terminal capability information is used to indicate at least one of the following information: whether the terminal supports eDRX, whether the terminal supports the RRC-inactive state, and whether the terminal supports eDRX in the RRC-inactive state; the first condition information is used to indicate whether the eDRX cycle included in the first parameter information is greater than or equal to the first time length. Based on the above method, the conditions for the first access network device to trigger the core network device to configure the eDRX parameters are given.

[0046] In a possible implementation manner, the first indication information is carried in a terminal context termination response. Based on the above method, the first access network device may receive the first indication information through the terminal context termination response.

[0047] In a possible implementation, the auxiliary information is carried in a terminal context termination request message or a terminal capability information indication message. Based on the above method, the first access network device can send the auxiliary information to the core network device via a terminal context termination request message or a terminal capability information indication message.

[0048] A possible implementation method for obtaining the first parameter information includes: receiving the first parameter information from the core network device, the first parameter information being carried in an initial context establishment request message, or carried in core network auxiliary information in the RRC-inactive state. Based on the above method, the first access network device can receive the first parameter information of the core network device through the initial context establishment request message or the core network auxiliary information in the RRC-inactive state.

[0049] In a possible implementation manner, the method further includes: sending first eDRX parameter information to the second access network device, the first eDRX parameter information including first parameter information or first indication information. Based on the above method, the first parameter information or the second parameter information can be sent to the second access network device so that the second access network device pages the terminal according to the first parameter information or the second parameter information.

[0050] In a possible implementation, the first eDRX parameter information also includes at least one of the DRX cycle of the access network device configured by the first access network device and the terminal-specific DRX cycle. Based on the above method, the second access network device can determine the DRX cycle of the paging terminal.

[0051] In a possible implementation, the first eDRX parameter information is sent to the access network device in the tracking area list of the first access network device, and the identifier of the second access network device is included in the tracking area list of the first access network device. Based on the above method, the first access network device can send the first parameter information or the second parameter information to the access network device in the tracking area list of the first access network device, so that the access network device in the list can help the paging terminal.

[0052] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the first access network device can send the first parameter information and the second parameter information to the second access network device through the paging message of the access network device.

[0053] In a possible implementation, the first access network device includes a centralized unit and a distributed unit, and the first access network device receives first indication information from a core network device, including: the centralized unit receives the first indication information from the core network device, and the first access network device obtains first parameter information, including: the centralized unit obtains the first parameter information, and the method further includes: the centralized unit sends the parameter information of the second eDRX to the distributed unit, and the parameter information of the second eDRX includes the first parameter information or the first indication information. Based on the above method, in the architecture where the first access network device is separated from the centralized unit and the distributed unit, after the centralized unit obtains the first parameter information or the second parameter information, it can be sent to the distributed unit, so that the distributed unit pages the terminal according to the first parameter information or the second parameter information.

[0054] In a possible implementation, the second eDRX parameter information also includes the DRX cycle of the access network device configured by the centralized unit and the terminal-specific DRX cycle. Based on the above method, the distributed unit can determine the DRX cycle of the paging terminal.

[0055] In a possible implementation, the second eDRX parameter information is carried in a paging message. Based on the above method, the centralized unit may send the first parameter information or the second parameter information to the distributed unit via a paging message.

[0056] In a sixth aspect, an embodiment of the present application provides a communication method, applied to a terminal, the method comprising: obtaining first parameter information, the first parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used by the terminal to receive a paging message in eDRX mode; receiving first indication information from a first access network device or a core network device, the first indication information being used to indicate a first eDRX parameter; and receiving a paging message using the first eDRX parameter.

[0057] Based on the method provided in the sixth aspect above, after acquiring the second eDRX parameter, the terminal may also receive the first eDRX parameter configured by the core network device, and subsequently receive a paging message according to the first eDRX parameter.

[0058] A possible implementation manner is to receive the first indication information from the first access network device through an RRC release message or an RRC connection reconfiguration message; and to receive the first indication information from the core network device through a non-access layer NAS message. Based on the above method, the terminal can receive the first indication information through an RRC release message or an RRC connection reconfiguration message, or receive the first indication information through a NAS message.

[0059] In a possible implementation, obtaining the first parameter information includes: receiving the first parameter information from the core network device, the first parameter information being carried in a NAS message. Based on the above method, the terminal can receive the first parameter information of the core network device through the NAS message, so as to receive the paging message according to the first parameter information before receiving the first indication information.

[0060] In the seventh aspect, an embodiment of the present application provides a communication method, applied to a core network device, the method comprising: receiving auxiliary information from a first access network device, the auxiliary information being used to assist the core network device in configuring eDRX parameters; sending first indication information to the first access network device, the first indication information being used to indicate a first extended discontinuous reception eDRX parameter; and sending a paging message using the first eDRX parameter.

[0061] Based on the method provided in the seventh aspect, the core network can configure the eDRX parameters according to the trigger of the first access network device, so that the delay of the terminal receiving the paging message of the access network device is reduced and the user experience is improved. In addition, in the method, the first access network device and the core network device can use the same eDRX parameters to send the paging message, which is relatively easy to implement and has high feasibility.

[0062] In a possible implementation, when the terminal is about to enter the radio resource control inactive RRC-inactive state, the terminal receives auxiliary information from the first access network device. Based on the above method, when the terminal enters the RRC-inactive state, the core network device is triggered to configure the eDRX parameters, so that the terminal can use the newly configured eDRX parameters in the RRC-inactive state to receive the paging message of the first access network device, which can reduce the delay of the terminal receiving the paging message of the first access network device and improve the user experience.

[0063] In a possible implementation, the auxiliary information is carried in a terminal context termination request message or a terminal capability information indication message. Based on the above method, the core network device can receive the auxiliary information through the terminal context termination request message or the terminal capability information indication message.

[0064] In a possible implementation, the first indication information is sent to the first access network device through a terminal context termination response. Based on the above method, the first indication information can be sent to the first access network device through a terminal context termination response.

[0065] In a possible implementation manner, the method further includes: sending first indication information to the terminal. Based on the above method, the core network device can send the first indication information to the terminal, so that the terminal can receive the paging message according to the first indication information.

[0066] In a possible implementation, the first indication information is sent to the terminal via a non-access layer NAS message. Based on the above method, the core network device may send the first indication information to the terminal via a NAS message.

[0067] In a possible implementation, the method further includes: sending first parameter information to the first access network device, the first parameter information is used to indicate the second eDRX parameter, and the second eDRX parameter is used for the core network device to send a paging message in eDRX mode before sending the first indication information. Based on the above method, the core network device can send the first parameter information to the first access network device, so that the first access network device can determine whether to trigger the core network device to configure the eDRX parameter according to the first parameter information.

[0068] In a possible implementation, the first parameter information is carried in an initial context establishment request message, or in core network auxiliary information in the RRC-inactive state. Based on the above method, the first parameter information can be sent to the first access network device via an initial context establishment request message or core network auxiliary information in the RRC-inactive state.

[0069] In a possible implementation, the method further includes: sending first parameter information to the terminal, the first parameter information is used to indicate a second eDRX parameter, and the second eDRX parameter is used to send a paging message in eDRX mode before the core network device sends the first indication information. Based on the above method, the core network device can also send the first parameter information to the terminal, so that the terminal can receive the paging message according to the first parameter information before receiving the first indication information.

[0070] In a possible implementation, the first parameter information is sent to the terminal via a non-access layer NAS message. Based on the above method, the core network device may send the first parameter information to the terminal via a NAS message.

[0071] In an eighth aspect, an embodiment of the present application provides a communication method, applied to a second access network device, the method comprising: receiving parameter information of a first eDRX from a first access network device, the parameter information of the first eDRX comprising first parameter information or first indication information, the first parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used for the first access network device to send a paging message to a terminal in an eDRX mode before receiving the first indication information, the first indication information being used to indicate the first eDRX parameter, the first eDRX parameter being used for the first access network device to send a paging message to a terminal in an eDRX mode after receiving the first indication information; the second access network device sends a paging message to the terminal according to the parameter information of the first eDRX.

[0072] Based on the method provided in the eighth aspect above, the second access network device may receive the first parameter information or the second parameter information from the first access network device, and then page the terminal according to the first parameter information or the second parameter information.

[0073] In a possible implementation, the first eDRX parameter information also includes at least one of the DRX cycle of the access network device configured by the first access network device and the terminal-specific DRX cycle. Based on the above method, the second access network device can determine the DRX cycle of the paging terminal.

[0074] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the first access network device.

[0075] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the first access network device can send the first parameter information and the second parameter information to the second access network device through the paging message of the access network device.

[0076] In the ninth aspect, an embodiment of the present application provides a communication method, which is applied to a first access network device, the method comprising: obtaining first parameter information, determining a first time domain position based on the first parameter information, the first parameter information being used to indicate a first eDRX parameter, the first eDRX parameter being used for a core network device to send a paging message in eDRX mode, the first time domain position comprising the position of at least one paging time unit; within the first time unit, sending a paging message to a terminal based on whether a paging time unit exists in the core network device, and within the first time unit, a paging time unit exists in the first access network device.

[0077] Based on the method provided in the ninth aspect above, the eDRX parameters used by the core network device to send a paging message are different from the eDRX parameters used by the first access network device to send a paging message. In this case, if there are paging time units of the core network device and paging time units of the access network device in the first time unit, the terminal can be awakened in one of the paging time units. In this way, the terminal can receive paging messages from the access network device and the core network device according to appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0078] In a possible implementation, the method further includes: determining a second time domain position according to second parameter information, the second parameter information is used to indicate a second eDRX parameter, the second eDRX parameter is used by the first access network device to send a paging message in eDRX mode, and the second time domain position includes the position of at least one paging time unit. Based on the above method, the first access network device can determine the second time domain position according to the second parameter information. In this way, the first access network device can send a paging message according to the first time domain position and the second time domain position.

[0079] In a possible implementation, the second parameter information is obtained based on the first parameter information, and within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain. Based on the above method, the first access network device can obtain the second parameter information based on the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0080] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the first access network device can configure appropriate second parameter information so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0081] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0082] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0083] A possible implementation method is to send a paging message to a terminal in a first time unit according to whether a paging time unit exists in a core network device, including: if a paging time unit exists in a core network device in the first time unit, then a paging message is sent to the terminal in a paging time unit in which a first access network device exists in the first time unit, or, in the first time unit, a paging message is sent to the terminal in a paging time unit in which a core network device exists; or, if a paging time unit does not exist in a core network device in the first time unit, then a paging message is sent to the terminal in a paging time unit in which a first access network device exists in the first time unit. Based on the above method, in the first time unit, if both the core network device and the first access network device have paging time units, the first access network device and the core network device send a paging message in one of the paging time units, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0084] A possible implementation method is that if the core network device has a paging time unit within the first time unit, the DRX cycle of the first access network device sending the paging message is the default DRX cycle; or, the DRX cycle of the first access network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the first access network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the first access network device sending the paging message is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; or, if the core network device does not have a paging time unit within the first time unit, the DRX cycle of the first access network device sending the paging message is the default DRX cycle; or, the DRX cycle of the first access network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the first access network device sending the paging message is the minimum or maximum value among the default DRX cycle and the DRX cycle of the access network device. Based on the above method, the DRX cycle of the first access network device sending the paging message in different situations is given.

[0085] A possible implementation method for obtaining the first parameter information includes: receiving the first parameter information from the core network device, the first parameter information being carried in an initial context establishment request message, or being carried in core network auxiliary information in the RRC-inactive state. Based on the above method, the first access network device can receive the first parameter information through the initial context establishment request message or the core network auxiliary information in the RRC-inactive state.

[0086] In a possible implementation manner, the first time unit is a superframe.

[0087] In a possible implementation, the method further includes: sending parameter information of the first eDRX to the second access network device, the parameter information of the first eDRX including the first parameter information and the second parameter information. Based on the above method, the first access network device can send the first parameter information and the second parameter information to the second access network device, so that after the terminal moves to the coverage of the second access network device in the RRC-inactive state, the second access network device can page the terminal according to the first parameter information and the second parameter information.

[0088] In a possible implementation, the first eDRX parameter information also includes the DRX cycle of the access network device configured by the first access network device and at least one of the terminal-specific DRX cycles. Based on the above method, the second access network device can determine the DRX cycle of the second access network device paging the terminal.

[0089] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the first access network device.

[0090] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the first access network device can send the first parameter information and the second parameter information to the second access network device through the paging message of the access network device.

[0091] In a possible implementation, the first access network device includes a centralized unit and a distributed unit, and the first access network device obtains the first parameter information, including: the centralized unit obtains the first parameter information, and the method further includes: the centralized unit sends the second eDRX parameter information to the distributed unit, the second eDRX parameter information includes the first parameter information and the second parameter information, the second parameter information is used to indicate the second eDRX parameter, and the second eDRX parameter is used for the first access network device to send a paging message in the eDRX mode. Based on the above method, in the architecture where the first access network device is separated from the centralized unit and the distributed unit, after the centralized unit obtains the first parameter information and the second parameter information, it can send them to the distributed unit, so that the distributed unit pages the terminal according to the first parameter information and the second parameter information.

[0092] In a possible implementation, the second eDRX parameter information also includes the DRX cycle of the access network device configured by the centralized unit and the terminal-specific DRX cycle. Based on the above method, the distributed unit can determine the DRX cycle of the paging terminal.

[0093] In a possible implementation, the second eDRX parameter information is carried in a paging message. Based on the above method, the centralized unit can send the first parameter information and the second parameter information to the distributed unit via a paging message.

[0094] In the tenth aspect, an embodiment of the present application provides a communication method, applied to a terminal, the method comprising: obtaining first parameter information and second parameter information, the first parameter information being used to indicate a first eDRX parameter, the first eDRX parameter being used for the terminal to adopt an eDRX mode to receive a paging message from a core network device, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used for the terminal to adopt an eDRX mode to receive a paging message from a first access network device; determining a first time domain position according to the first parameter information, determining a second time domain position according to the second parameter information, the first time domain position including the position of at least one paging time unit, and the second time domain position including the position of at least one paging time unit; within the first time unit, receiving a paging message from the first access network device and a paging message from the core network device according to whether there is a paging time unit in the core network device, and within the first time unit, there is a paging time unit in the first access network device.

[0095] Based on the method provided in the tenth aspect above, the eDRX parameters used by the core network device to send a paging message are different from the eDRX parameters used by the first access network device to send a paging message. In this case, if there are paging time units of the core network device and paging time units of the access network device in the first time unit, the terminal can be awakened in one of the paging time units. In this way, the terminal can receive paging messages from the access network device and the core network device according to appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0096] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0097] In a possible implementation, the second parameter information is obtained based on the first parameter information, and within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain. Based on the above method, the second parameter information can be obtained based on the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0098] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information determined according to the first parameter information can make the paging time unit existing in the core network device overlap with the paging time unit existing in the first access network device in the first time unit in the time domain.

[0099] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0100] A possible implementation method is to receive a paging message from a first access network device and a paging message from a core network device according to whether a paging time unit exists in the core network device within a first time unit, including: if a paging time unit exists in the core network device within the first time unit, then the paging message from the first access network device and the paging message from the core network device are received in the paging time unit existing in the first access network device within the first time unit, or, in the paging time unit existing in the core network device, the paging message from the first access network device and the paging message from the core network device are received in the paging time unit existing in the core network device within the first time unit; or, if a paging time unit does not exist in the core network device within the first time unit, then the paging message from the core network device is received in the paging time unit existing in the core network device within the first time unit, and the paging message from the first access network device is received in the paging time unit existing in the first time unit. Based on the above method, within the first time unit, if both the core network device and the first access network device have paging time units, the terminal receives the paging message in one of the paging time units, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0101] A possible implementation method is that if a paging time unit exists in the core network device within the first time unit, the discontinuous reception DRX cycle of the terminal receiving the paging message is the default DRX cycle; or, the DRX cycle of the terminal receiving the paging message is a terminal-specific DRX cycle; or, the DRX cycle of the terminal receiving the paging message is the DRX cycle of the access network device; or, the DRX cycle of the terminal receiving the paging message is the default DRX cycle, the minimum or maximum value of the terminal-specific DRX cycle and the DRX cycle of the access network device; or, if a paging time unit does not exist in the core network device within the first time unit, the DRX cycle of the terminal receiving the paging message of the core network device is the default DRX cycle; or Alternatively, the DRX cycle at which the terminal receives the paging message of the core network device is a terminal-specific DRX cycle; or, the DRX cycle at which the terminal receives the paging message of the core network device is the minimum or maximum value between the default DRX cycle and the terminal-specific DRX cycle; or, if the core network device does not have a paging time unit within the first time unit, the DRX cycle at which the terminal receives the paging message of the first access network device is the default DRX cycle; or, the DRX cycle at which the terminal receives the paging message of the first access network device is the DRX cycle of the access network device; or, the DRX cycle at which the terminal receives the paging message of the first access network device is the minimum or maximum value between the default DRX cycle and the DRX cycle of the access network device. Based on the above method, the DRX cycle at which the terminal receives the paging message under different circumstances is given.

[0102] In a possible implementation, obtaining the first parameter information includes: receiving the first parameter information from a core network device, the first parameter information being carried in a non-access layer NAS message. Based on the above method, the terminal can receive the first parameter information of the core network device through a NAS message.

[0103] In a possible implementation, obtaining the second parameter information includes: receiving the second parameter information from the first access network device, the second parameter information being carried in an RRC release message or an RRC connection reconfiguration message. Based on the above method, the terminal can receive the second parameter information of the first access network device through the RRC release message or the RRC connection reconfiguration message.

[0104] In the eleventh aspect, an embodiment of the present application provides a communication method, which is applied to a core network device, the method comprising: obtaining second parameter information, determining a second time domain position based on the second parameter information, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used for a first access network device to send a paging message using an eDRX mode, the second time domain position comprising the position of at least one paging time unit; within the first time unit, sending a paging message to a terminal based on whether a paging time unit exists in the core network device, and within the first time unit, a paging time unit exists in the first access network device.

[0105] Based on the method provided in the eleventh aspect above, the eDRX parameters used by the core network device to send a paging message are different from the eDRX parameters used by the first access network device to send a paging message. In this case, if there are paging time units of the core network device and paging time units of the access network device in the first time unit, the terminal can be awakened in one of the paging time units. In this way, the terminal can receive paging messages from the access network device and the core network device according to appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0106] In a possible implementation, the method further includes: determining a first time domain position according to first parameter information, the first parameter information is used to indicate a first eDRX parameter, the first eDRX parameter is used for the core network device to send a paging message in eDRX mode, and the first time domain position includes the position of at least one paging time unit. Based on the above method, the core network device can determine the first time domain position according to the first parameter information. In this way, the core network device can send a paging message according to the first time domain position and the second time domain position.

[0107] In a possible implementation, the second parameter information is obtained based on the first parameter information, and within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain. Based on the above method, the second parameter information can be obtained based on the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0108] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information determined according to the first parameter information can make the paging time unit existing in the core network device overlap with the paging time unit existing in the first access network device in the first time unit in the time domain.

[0109] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0110] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0111] A possible implementation method is to send a paging message to the terminal within the first time unit according to whether the core network device has a paging time unit, including: if the core network device has a paging time unit within the first time unit, then send a paging message to the terminal in the paging time unit where the first access network device exists within the first time unit, or send a paging message to the terminal in the paging time unit where the core network device exists within the first time unit; or, if the core network device does not have a paging time unit within the first time unit, then send a paging message to the terminal in the paging time unit where the core network device exists within the first time unit. Based on the above method, within the first time unit, if both the core network device and the first access network device have paging time units, the first access network device and the core network device send a paging message in one of the paging time units, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0112] A possible implementation method is that if a paging time unit exists in the core network device within the first time unit, the discontinuous reception DRX cycle of the core network device sending the paging message is the default DRX cycle; or, the DRX cycle of the core network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the core network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the core network device sending the paging message is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; or, if a paging time unit does not exist in the core network device within the first time unit, the discontinuous reception DRX cycle of the core network device sending the paging message is the default DRX cycle; or, the DRX cycle of the core network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the core network device sending the paging message is the minimum or maximum value among the default DRX cycle and the terminal-specific DRX cycle. Based on the above method, the DRX cycle of the core network device sending the paging message in different situations is given.

[0113] In a possible implementation, obtaining the second parameter information includes: receiving the second parameter information from the first access network device, the second parameter information being carried in an RRC inactive conversion report. Based on the above method, the core network device can receive the second parameter information of the first access network device through the RRC inactive conversion report.

[0114] In the twelfth aspect, an embodiment of the present application provides a communication method, which is applied to a second access network device, the method comprising: receiving parameter information of a first eDRX from a first access network device, the parameter information of the first eDRX comprising first parameter information and second parameter information, the first parameter information being used to indicate a first extended discontinuous reception eDRX parameter, the first eDRX parameter being used by a core network device to send a paging message to a terminal in an eDRX mode, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used by the first access network device to send a paging message to a terminal in an eDRX mode; determining a first time domain position according to the first parameter information, and determining a second time domain position according to the second parameter information, the first time domain position comprising the position of at least one paging time unit, and the second time domain position comprising the position of at least one paging time unit; within the first time unit, sending a paging message to the terminal according to whether the core network device has a paging time unit, and within the first time unit, the first access network device has a paging time unit.

[0115] Based on the method provided in the above-mentioned twelfth aspect, the first access network device can send the first parameter information and the second parameter information to the second access network device, so that after the terminal moves to the coverage range of the second access network device in the RRC-inactive state, the second access network device can page the terminal according to the first parameter information and the second parameter information.

[0116] In a possible implementation, the second parameter information is obtained based on the first parameter information, and within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain. Based on the above method, the second parameter information can be obtained based on the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0117] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information determined according to the first parameter information can make the paging time unit existing in the core network device overlap with the paging time unit existing in the first access network device in the first time unit in the time domain.

[0118] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0119] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0120] A possible implementation method is to send a paging message to a terminal in a first time unit according to whether a core network device has a paging time unit, including: if a core network device has a paging time unit in the first time unit, then a paging message is sent to the terminal in a paging time unit in which a first access network device exists in the first time unit, or, in the first time unit, a paging message is sent to the terminal in a paging time unit in which a core network device exists; or, if a core network device does not have a paging time unit in the first time unit, then a paging message is sent to the terminal in a paging time unit in which a first access network device exists in the first time unit. Based on the above method, in the first time unit, if both the core network device and the second access network device have paging time units, the second access network device and the core network device send a paging message in one of the paging time units, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0121] A possible implementation method is that if the core network device has a paging time unit within the first time unit, the discontinuous reception DRX cycle of the second access network device sending the paging message is the default DRX cycle; or, the DRX cycle of the second access network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the second access network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the second access network device sending the paging message is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; if the core network device does not have a paging time unit within the first time unit, the discontinuous reception DRX cycle of the second access network device sending the paging message is the default DRX cycle; or, the DRX cycle of the second access network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the second access network device sending the paging message is the minimum or maximum value among the default DRX cycle and the DRX cycle of the access network device. Based on the above method, the DRX cycle of the second access network device sending the paging message in different situations is given.

[0122] In a possible implementation, the first eDRX parameter information also includes the DRX cycle of the access network device configured by the first access network device and at least one of the terminal-specific DRX cycles. Based on the above method, the second access network device can determine the DRX cycle of the second access network device paging the terminal.

[0123] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the first access network device.

[0124] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the second access network device can receive the first parameter information and the second parameter information through the paging message of the access network device.

[0125] In the thirteenth aspect, an embodiment of the present application provides a communication method, which is applied to a first access network device, the method comprising: obtaining first parameter information, determining a first time domain position based on the first parameter information, the first parameter information being used to indicate a first eDRX parameter, the first eDRX parameter being used for a core network device to send a paging message in eDRX mode, and the first time domain position including the position of at least one paging time unit; obtaining second parameter information, determining a second time domain configuration based on the second parameter information, the second parameter information being obtained based on the first parameter information, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used for the first access network device to send a paging message in eDRX mode, and the second time domain position including the position of at least one paging time unit; sending a paging message according to the first time domain position and the second time domain position.

[0126] Based on the method provided in the thirteenth aspect above, the first access network device can determine the second parameter information according to the first parameter information, so that the positions of some paging time units included in the second time domain position overlap with the positions of some paging time units included in the first time domain position in the time domain. In this way, for the paging time units that overlap in the first time domain position and the second time domain position, the terminal can be awakened in one of the paging time units, so that the terminal can receive the paging messages of the access network device and the core network device according to the appropriate eDRX parameters, and can also reduce the delay, improve the user experience, and reduce the power consumption of the terminal.

[0127] In a possible implementation, within the first time unit, the paging time unit of the core network device overlaps with the paging time unit of the first access network device in the time domain. Based on the above method, within the first time unit, the terminal can be awakened in one of the paging time units, so that the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, and can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0128] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information can be determined according to the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0129] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0130] A possible implementation method is to send a paging message according to a first time domain position and a second time domain position, including: within a first time unit, sending a paging message to a terminal in a paging time unit where a first access network device exists, or sending a paging message to a terminal in a paging time unit where a core network device exists; or, outside the first time unit, sending a paging message to a terminal in a paging time unit where a first access network device exists. Based on the above method, within the first time unit, the first access network device and the core network device send a paging message in one of the paging time units where the first access network device exists and the paging time unit where the core network device exists, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0131] A possible implementation method is that within the first time unit, the DRX cycle of the first access network device sending a paging message is the default DRX cycle; or, the DRX cycle of the first access network device sending a paging message is the terminal-specific DRX cycle; or, the DRX cycle of the first access network device sending a paging message is the DRX cycle of the access network device; or, the DRX cycle of the first access network device sending a paging message is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; outside the first time unit, the DRX cycle of the first access network device sending a paging message is the default DRX cycle; or, the DRX cycle of the first access network device sending a paging message is the DRX cycle of the access network device; or, the DRX cycle of the first access network device sending a paging message is the minimum or maximum value among the default DRX cycle and the DRX cycle of the access network device. Based on the above method, the DRX cycle of the first access network device sending a paging message under different circumstances is given.

[0132] A possible implementation method for obtaining the first parameter information includes: receiving the first parameter information from the core network device, the first parameter information being carried in an initial context establishment request message, or being carried in core network auxiliary information in the RRC-inactive state. Based on the above method, the first access network device can receive the first parameter information through the initial context establishment request message or the core network auxiliary information in the RRC-inactive state.

[0133] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0134] In a possible implementation manner, the first time unit is a superframe.

[0135] In a possible implementation, the method further includes: sending parameter information of the first eDRX to the second access network device, the parameter information of the first eDRX including the first parameter information and the second parameter information. Based on the above method, the first access network device can send the first parameter information and the second parameter information to the second access network device, so that after the terminal moves to the coverage of the second access network device in the RRC-inactive state, the second access network device can page the terminal according to the first parameter information and the second parameter information.

[0136] In a possible implementation, the first eDRX parameter information also includes the DRX cycle of the access network device configured by the first access network device and at least one of the terminal-specific DRX cycles. Based on the above method, the second access network device can determine the DRX cycle of the second access network device paging the terminal.

[0137] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the first access network device.

[0138] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the first access network device can send the first parameter information and the second parameter information to the second access network device through the paging message of the access network device.

[0139] In a possible implementation, the first access network device includes a centralized unit and a distributed unit, and the first access network device obtains the first parameter information, including: the centralized unit obtains the first parameter information, and the first access network device obtains the second parameter information, including: the centralized unit obtains the second parameter information, and the method further includes: the centralized unit sends the parameter information of the second eDRX to the distributed unit, and the parameter information of the second eDRX includes the first parameter information and the second parameter information. Based on the above method, the first access network device is in an architecture where the centralized unit and the distributed unit are separated. After the centralized unit obtains the first parameter information and the second parameter information, it can send them to the distributed unit, so that the distributed unit pages the terminal according to the first parameter information and the second parameter information.

[0140] In a possible implementation, the second eDRX parameter information also includes the DRX cycle of the access network device configured by the centralized unit and the terminal-specific DRX cycle. Based on the above method, the distributed unit can determine the DRX cycle of the paging terminal.

[0141] In a possible implementation, the second eDRX parameter information is carried in a paging message. Based on the above method, the centralized unit can send the first parameter information and the second parameter information to the distributed unit via a paging message.

[0142] In the fourteenth aspect, an embodiment of the present application provides a communication method, applied to a terminal, the method comprising: obtaining first parameter information, determining a first time domain position based on the first parameter information, the first parameter information being used to indicate a first extended discontinuous reception eDRX parameter, the first eDRX parameter being used by the terminal to receive a paging message from a core network device in eDRX mode, and the first time domain position including the position of at least one paging time unit; obtaining second parameter information, determining a second time domain configuration based on the second parameter information, the second parameter information being obtained based on the first parameter information, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used by the terminal to receive a paging message from a first access network device in eDRX mode, and the second time domain position including the position of at least one paging time unit; receiving a paging message according to the first time domain position and the second time domain position.

[0143] Based on the method provided in the above-mentioned fourteenth aspect, the second parameter information can be determined according to the first parameter information, so that the positions of some paging time units included in the second time domain position overlap with the positions of some paging time units included in the first time domain position in the time domain. In this way, for the paging time units that overlap in the first time domain position and the second time domain position, the terminal can be awakened in one of the paging time units, so that the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, and can also reduce latency, improve user experience, and reduce power consumption of the terminal.

[0144] In a possible implementation, within the first time unit, the paging time unit of the core network device overlaps with the paging time unit of the first access network device in the time domain. Based on the above method, within the first time unit, the terminal can be awakened in one of the paging time units, so that the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, and can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0145] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information can be determined according to the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0146] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0147] A possible implementation method, receiving a paging message according to a first time domain position and a second time domain position, includes: within a first time unit, receiving a paging message from the first access network device and a paging message from the core network device in a paging time unit where the first access network device exists, or, receiving a paging message from the first access network device and a paging message from the core network device in a paging time unit where the core network device exists; or, outside the first time unit, receiving a paging message from the core network device in a paging time unit where the core network device exists, and receiving a paging message from the first access network device in a paging unit where the first access network device exists. Based on the above method, within the first time unit, the terminal receives a paging message in one of the paging time units where the first access network device exists and the paging time unit where the core network device exists, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0148] In a possible implementation, within the first time unit, the DRX cycle of the discontinuous reception of the paging message by the terminal is the default DRX cycle; or, the DRX cycle of the paging message by the terminal is the DRX cycle of the access network device; or, the DRX cycle of the paging message by the terminal is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; outside the first time unit, the DRX cycle of the paging message by the terminal is the default DRX cycle; or, the DRX cycle of the core network device is the default DRX cycle. The DRX cycle of the paging message of the core network device received by the terminal is the minimum or maximum value between the default DRX cycle and the terminal-specific DRX cycle; outside the first time unit, the DRX cycle of the paging message of the first access network device received by the terminal is the default DRX cycle; or, the DRX cycle of the paging message of the first access network device received by the terminal is the DRX cycle of the access network device; or, the DRX cycle of the paging message of the first access network device received by the terminal is the minimum or maximum value between the default DRX cycle and the DRX cycle of the access network device. Based on the above method, the DRX cycle of the terminal receiving the paging message in different situations is given.

[0149] In a possible implementation, obtaining the first parameter information includes: receiving the first parameter information from a core network device, wherein the first parameter information is carried in a non-access layer NAS message. Based on the above method, the terminal can receive the first parameter information through a NAS message.

[0150] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0151] In the fifteenth aspect, an embodiment of the present application provides a communication method, which is applied to a core network device, the method comprising: obtaining first parameter information, determining a first time domain position based on the first parameter information, the first parameter information being used to indicate a first extended discontinuous reception eDRX parameter, the first eDRX parameter being used for the core network device to send a paging message in eDRX mode, and the first time domain position including the position of at least one paging time unit; obtaining second parameter information, determining a second time domain configuration based on the second parameter information, the second parameter information being obtained based on the first parameter information, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used for the first access network device to send a paging message in eDRX mode, and the second time domain position including the position of at least one paging time unit; sending a paging message according to the first time domain position and the second time domain position.

[0152] Based on the method provided in the fifteenth aspect above, the second parameter information can be determined according to the first parameter information, so that the positions of some paging time units included in the second time domain position overlap with the positions of some paging time units included in the first time domain position in the time domain. In this way, for the paging time units that overlap in the first time domain position and the second time domain position, the terminal can be awakened in one of the paging time units, so that the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, and can also reduce latency, improve user experience, and reduce power consumption of the terminal.

[0153] In a possible implementation, within the first time unit, the paging time unit of the core network device overlaps with the paging time unit of the first access network device in the time domain. Based on the above method, within the first time unit, the terminal can be awakened in one of the paging time units, so that the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, and can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0154] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information can be determined according to the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0155] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0156] A possible implementation method is to send a paging message according to a first time domain position and a second time domain position, including: within a first time unit, sending a paging message to a terminal in a paging time in which a first access network device exists, or sending a paging message to a terminal in a paging time unit in which a core network device exists; or, outside a second time unit, sending a paging message to a terminal in a paging time unit in which a core network device exists. Based on the above method, within the first time unit, the first access network device and the core network device send a paging message in one of the paging time units in which the first access network device exists and the paging time unit in which the core network device exists, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0157] A possible implementation method is that within the first time unit, the discontinuous reception DRX cycle of the core network device sending the paging message is the default DRX cycle; or, the DRX cycle of the core network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the core network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the core network device sending the paging message is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; outside the first time unit, the DRX cycle of the core network device sending the paging message is the default DRX cycle; or, the DRX cycle of the core network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the core network device sending the paging message is the minimum or maximum value among the default DRX cycle and the terminal-specific DRX cycle. Based on the above method, the DRX cycle of the core network device sending the paging message in different situations is given.

[0158] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0159] In the sixteenth aspect, an embodiment of the present application provides a communication method, which is applied to a second access network device, the method comprising: receiving parameter information of a first eDRX from a first access network device, the parameter information of the first eDRX comprising first parameter information and second parameter information, the first parameter information being used to indicate a first extended discontinuous reception eDRX parameter, the first eDRX parameter being used by a core network device to send a paging message to a terminal in an eDRX mode, the second parameter information being used to indicate a second eDRX parameter, the second eDRX parameter being used by the first access network device to send a paging message to a terminal in an eDRX mode, the second parameter information being acquired based on the first parameter information; determining a first time domain position based on the first parameter information, determining a second time domain position based on the second parameter information, the first time domain position comprising the position of at least one paging time unit, the second time domain position comprising the position of at least one paging time unit; sending a paging message based on the first time domain position and the second time domain position shown.

[0160] Based on the method provided in the above-mentioned sixteenth aspect, the second access network device can receive the first parameter information and the second parameter information sent by the first access network device, so that after the terminal moves to the coverage range of the second access network device in the RRC-inactive state, the second access network device can page the terminal according to the first parameter information and the second parameter information.

[0161] In a possible implementation, within the first time unit, the paging time unit of the core network device overlaps with the paging time unit of the first access network device in the time domain. Based on the above method, within the first time unit, the terminal can be awakened in one of the paging time units, so that the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, and can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0162] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the terminal identifier is an even number. Based on the above method, the second parameter information can be determined according to the first parameter information, so that within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0163] In a possible implementation, the number of superframes in the eDRX cycle included in the second parameter information is an even number. Based on the above method, when the number of superframes in the eDRX cycle included in the second parameter information is an even number, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0164] A possible implementation method, sending a paging message according to the first time domain position and the second time domain position shown, includes: within the first time unit, sending a paging message to the terminal in the paging time unit where the first access network device exists, or sending a paging message to the terminal in the paging time unit where the core network device exists; or, outside the first time unit, sending a paging message to the terminal in the paging time unit where the first access network device exists. Based on the above method, within the first time unit, the second access network device and the core network device send a paging message in one of the paging time units where the second access network device exists and the paging time unit where the core network device exists, which can reduce the number of times the terminal is awakened and reduce the power consumption of the terminal.

[0165] A possible implementation method is that within the first time unit, the discontinuous reception DRX cycle of the second access network device sending the paging message is the default DRX cycle; or, the DRX cycle of the second access network device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the second access network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the second access network device sending the paging message is the default DRX cycle, the minimum or maximum value among the terminal-specific DRX cycle and the DRX cycle of the access network device; outside the first time unit, the DRX cycle of the second access network device sending the paging message is the default DRX cycle; or, the DRX cycle of the second access network device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the second access network device sending the paging message is the minimum or maximum value among the default DRX cycle and the DRX cycle of the access network device. Based on the above method, the DRX cycle of the second access network device sending the paging message in different situations is given.

[0166] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0167] In a possible implementation, the first eDRX parameter information also includes the DRX cycle of the access network device configured by the first access network device and at least one of the terminal-specific DRX cycles. Based on the above method, the second access network device can determine the DRX cycle of the second access network device paging the terminal.

[0168] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the first access network device.

[0169] In a possible implementation, the first eDRX parameter information is carried in a paging message of the access network device. Based on the above method, the second access network device can receive the first parameter information and the second parameter information through the paging message of the access network device.

[0170] In the seventeenth aspect, an embodiment of the present application provides a communication device, which can implement the method in any possible implementation of the first aspect above, or can implement the method in any possible implementation of the fifth aspect above, or can implement the method in any possible implementation of the ninth aspect above, or can implement the method in any possible implementation of the thirteenth aspect above. The device includes corresponding units or components for executing the above methods. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a first access network device, or a chip, a chip system, or a processor that can support the first access network device to implement the above method.

[0171] In the eighteenth aspect, an embodiment of the present application provides a communication device, which can implement the method in any possible implementation of the second aspect above, or can implement the method in any possible implementation of the sixth aspect above, or can implement the method in any possible implementation of the tenth aspect above, or can implement the method in any possible implementation of the fourteenth aspect above. The device includes corresponding units or components for executing the above method. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the above method.

[0172] In the nineteenth aspect, an embodiment of the present application provides a communication device, which can implement the method in any possible implementation of the third aspect above, or can implement the method in any possible implementation of the seventh aspect above, or can implement the method in any possible implementation of the eleventh aspect above, or can implement the method in any possible implementation of the fifteenth aspect above. The device includes corresponding units or components for executing the above methods. The units included in the device can be implemented in software and / or hardware. The device can be, for example, a core network device, or a chip, a chip system, or a processor that can support the core network device to implement the above method.

[0173] In the twentieth aspect, an embodiment of the present application provides a communication device, which can implement the method in any possible implementation of the fourth aspect above, or can implement the method in any possible implementation of the eighth aspect above, or can implement the method in any possible implementation of the twelfth aspect above, or can implement the method in any possible implementation of the sixteenth aspect above. The device includes corresponding units or components for executing the above methods. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a second access network device, or a chip, a chip system, or a processor that can support the second access network device to implement the above method.

[0174] In the twenty-first aspect, an embodiment of the present application provides a communication device, which can be used to implement the method in any possible implementation manner of the first aspect above, or can be used to implement the method in any possible implementation manner of the fifth aspect above, or can be used to implement the method in any possible implementation manner of the ninth aspect above, or can be used to implement the method in any possible implementation manner of the thirteenth aspect above.

[0175] In aspect 22, an embodiment of the present application provides a communication device, which can be used to implement the method in any possible implementation manner of the second aspect above, or can be used to implement the method in any possible implementation manner of the sixth aspect above, or can be used to implement the method in any possible implementation manner of the tenth aspect above, or can be used to implement the method in any possible implementation manner of the fourteenth aspect above.

[0176] In the twenty-third aspect, an embodiment of the present application provides a communication device, which can be used to implement the method in any possible implementation manner of the third aspect mentioned above, or can be used to implement the method in any possible implementation manner of the seventh aspect mentioned above, or can be used to implement the method in any possible implementation manner of the eleventh aspect mentioned above, or can be used to implement the method in any possible implementation manner of the fifteenth aspect mentioned above.

[0177] In the twenty-fourth aspect, an embodiment of the present application provides a communication device, which can be used to implement the method in any possible implementation manner of the fourth aspect above, or can be used to implement the method in any possible implementation manner of the eighth aspect above, or can be used to implement the method in any possible implementation manner of the twelfth aspect above, or can be used to implement the method in any possible implementation manner of the sixteenth aspect above.

[0178] In aspect twenty-fifth, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the program or instructions are executed by the processor, the device implements a method in any possible implementation manner of the above-mentioned first aspect, or implements a method in any possible implementation manner of the above-mentioned fifth aspect, or implements a method in any possible implementation manner of the above-mentioned ninth aspect, or implements a method in any possible implementation manner of the above-mentioned thirteenth aspect.

[0179] In the twenty-sixth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, so that when the programs or instructions are executed by the processor, the device can implement the method in any possible implementation manner of the second aspect mentioned above, or can implement the method in any possible implementation manner of the sixth aspect mentioned above, or can implement the method in any possible implementation manner of the tenth aspect mentioned above, or can implement the method in any possible implementation manner of the fourteenth aspect mentioned above.

[0180] In aspect twenty-seven, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, so that when the programs or instructions are executed by the processor, the device can implement the method in any possible implementation manner of the third aspect mentioned above, or can implement the method in any possible implementation manner of the seventh aspect mentioned above, or can implement the method in any possible implementation manner of the eleventh aspect mentioned above, or can implement the method in any possible implementation manner of the fifteenth aspect mentioned above.

[0181] In aspect 28, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, so that when the programs or instructions are executed by the processor, the device can implement the method in any possible implementation manner of the fourth aspect mentioned above, or can implement the method in any possible implementation manner of the eighth aspect mentioned above, or can implement the method in any possible implementation manner of the twelfth aspect mentioned above, or can implement the method in any possible implementation manner of the sixteenth aspect mentioned above.

[0182] In the twenty-ninth aspect, an embodiment of the present application provides a chip system, comprising at least one processor, for implementing the method in any possible implementation manner of the first aspect mentioned above, or for implementing the method in any possible implementation manner of the fifth aspect mentioned above, or for implementing the method in any possible implementation manner of the ninth aspect mentioned above, or for implementing the method in any possible implementation manner of the thirteenth aspect mentioned above.

[0183] In aspect 30, an embodiment of the present application provides a chip system, comprising at least one processor for implementing the method in any possible implementation manner of the second aspect mentioned above, or for implementing the method in any possible implementation manner of the sixth aspect mentioned above, or for implementing the method in any possible implementation manner of the tenth aspect mentioned above, or for implementing the method in any possible implementation manner of the fourteenth aspect mentioned above.

[0184] In aspect 31, an embodiment of the present application provides a chip system comprising at least one processor for implementing a method in any possible implementation manner of the third aspect, or for implementing a method in any possible implementation manner of the seventh aspect, or for implementing a method in any possible implementation manner of the eleventh aspect, or for implementing a method in any possible implementation manner of the fifteenth aspect.

[0185] In aspect 32, an embodiment of the present application provides a chip system comprising at least one processor for implementing the method in any possible implementation manner of the fourth aspect, or for implementing the method in any possible implementation manner of the eighth aspect, or for implementing the method in any possible implementation manner of the twelfth aspect, or for implementing the method in any possible implementation manner of the sixteenth aspect.

[0186] In a possible implementation of the twenty-ninth aspect, the thirtieth aspect, the thirty-first aspect, or the thirty-second aspect, the chip system further includes a memory, the memory is used to store program instructions and data, and the memory is located inside or outside the processor. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0187] In aspect thirty-third, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, causes a computer to execute the method described in any possible implementation of the first aspect above, or the method described in any possible implementation of the fifth aspect above, or the method described in any possible implementation of the ninth aspect above, or the method described in any possible implementation of the thirteenth aspect above.

[0188] In aspect thirty-fourth, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, causes a computer to execute the method described in any possible implementation of the second aspect above, or the method described in any possible implementation of the sixth aspect above, or the method described in any possible implementation of the tenth aspect above, or the method described in any possible implementation of the fourteenth aspect above.

[0189] In aspect thirty-fifth, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, causes a computer to execute the method described in any possible implementation of the third aspect, or the method described in any possible implementation of the seventh aspect, or the method described in any possible implementation of the eleventh aspect, or the method described in any possible implementation of the fifteenth aspect.

[0190] In aspect 36, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, causes a computer to execute the method described in any possible implementation of the fourth aspect, or the method described in any possible implementation of the eighth aspect, or the method described in any possible implementation of the twelfth aspect, or the method described in any possible implementation of the sixteenth aspect.

[0191] In aspect thirty-seven, an embodiment of the present application provides a computer program product, comprising a computer program code, which, when executed on a computer, enables the computer to execute the method described in any possible implementation of the first aspect, or the method described in any possible implementation of the fifth aspect, or the method described in any possible implementation of the ninth aspect, or the method described in any possible implementation of the thirteenth aspect.

[0192] In aspect 38, an embodiment of the present application provides a computer program product, comprising a computer program code, which, when executed on a computer, enables the computer to execute the method described in any possible implementation of the second aspect, or the method described in any possible implementation of the sixth aspect, or the method described in any possible implementation of the tenth aspect, or the method described in any possible implementation of the fourteenth aspect.

[0193] In aspect thirty-ninth, an embodiment of the present application provides a computer program product, comprising a computer program code, which, when executed on a computer, enables the computer to execute the method described in any possible implementation of the third aspect, or the method described in any possible implementation of the seventh aspect, or the method described in any possible implementation of the eleventh aspect, or the method described in any possible implementation of the fifteenth aspect.

[0194] In aspect 40, an embodiment of the present application provides a computer program product, comprising computer program code, which, when running on a computer, enables the computer to execute the method described in any possible implementation of the fourth aspect, or the method described in any possible implementation of the eighth aspect, or the method described in any possible implementation of the twelfth aspect, or the method described in any possible implementation of the sixteenth aspect.

[0195] In the forty-first aspect, an embodiment of the present application provides a communication system. The system includes the device described in the above-mentioned seventeenth aspect and / or the above-mentioned eighteenth aspect and / or the above-mentioned nineteenth aspect, or the system includes the device described in the above-mentioned twenty-first aspect and / or the above-mentioned twenty-second aspect and / or the above-mentioned twenty-third aspect, or the system includes the communication device described in the above-mentioned twenty-fifth aspect and / or the above-mentioned twenty-sixth aspect and / or the above-mentioned twenty-seventh aspect, or the system includes the chip system described in the above-mentioned twenty-ninth aspect and / or the above-mentioned thirtieth aspect and / or the above-mentioned thirty-first aspect, or the system includes the computer-readable medium described in the above-mentioned thirty-third aspect and / or the above-mentioned thirty-fourth aspect and / or the above-mentioned thirty-fifth aspect, or the system includes the computer program product described in the above-mentioned thirty-seventh aspect and / or the above-mentioned thirty-eighth aspect and / or the above-mentioned thirty-ninth aspect.

[0196] In the forty-second aspect, an embodiment of the present application provides a communication system. The system includes the device described in the seventeenth aspect and / or the eighteenth aspect and / or the nineteenth aspect and / or the twentieth aspect, or the system includes the device described in the twenty-first aspect and / or the twenty-second aspect and / or the twenty-third aspect and / or the twenty-fourth aspect, or the system includes the communication device described in the twenty-fifth aspect and / or the twenty-sixth aspect and / or the twenty-seventh aspect and / or the twenty-eighth aspect, or the system includes the chip system described in the twenty-ninth aspect and / or the thirtieth aspect and / or the thirty-first aspect and / or the thirty-second aspect, or the system includes the computer-readable medium described in the thirty-third aspect and / or the thirty-fourth aspect and / or the thirty-fifth aspect and / or the thirty-sixth aspect, or the system includes the computer program product described in the thirty-seventh aspect and / or the thirty-eighth aspect and / or the thirty-ninth aspect and / or the fortieth aspect.

[0197] Optionally, an embodiment of the present application further provides a first access network device, including:

[0198] A processor and a communication interface, wherein the communication interface is used for communicating with the first access network device, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the first access network device executes the method executed by the first access network device in any embodiment of the present application.

[0199] Optionally, an embodiment of the present application further provides a terminal, including:

[0200] A processor and a communication interface, wherein the communication interface is used for the terminal to communicate, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the terminal executes the method executed by the terminal in any embodiment of the present application.

[0201] Optionally, an embodiment of the present application further provides a core network device, including:

[0202] A processor and a communication interface, wherein the communication interface is used for communicating with the core network, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the core network device executes the method executed by the core network device in any embodiment of the present application.

[0203] Optionally, the embodiment of the present application further provides a second core network device, including:

[0204] A processor and a communication interface, wherein the communication interface is used for communicating with the core network, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the core network device executes the method executed by the second access network device in any embodiment of the present application.

[0205] Optionally, an embodiment of the present application also provides a communication device for executing the method provided by any embodiment of the present application, and the communication device is, for example: a chip, a terminal, a first access network device, a second access network device, a core network device, etc.

[0206] Optionally, an embodiment of the present application further provides a communication device, including a processor, the processor is coupled to a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the communication device executes the method executed by the core network device in any embodiment of the present application. The communication device is, for example: a chip, a terminal, a first access network device, a second access network device, a core network device, etc.

[0207] It can be understood that any of the communication devices, chip systems, computer-readable media, computer program products or communication systems provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0208] Figure 1 is a schematic diagram of DRX and eDRX;

[0209] Figure 2A A schematic diagram of the communication system architecture provided in an embodiment of the present application;

[0210] Figure 2B A schematic diagram of the architecture of an access network device provided in an embodiment of the present application;

[0211] Figure 3 A schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0212] Figure 4 Schematic diagram of the communication method provided in the embodiment of the present application Figure 1 ;

[0213] Figure 5 Schematic diagram 2 of the flow chart of the communication method provided in the embodiment of the present application;

[0214] Figure 6 Schematic diagram of the communication method provided in the embodiment of the present application Figure 3 ;

[0215] Fig. 7A Schematic diagram of the time domain location of the paging message provided in the embodiment of the present application Figure 1 ;

[0216] Figure 7B Schematic diagram 2 of the time domain location of the paging message provided in the embodiment of the present application;

[0217] Figure 7C Schematic diagram of the time domain location of the paging message provided in the embodiment of the present application Figure 3 ;

[0218] Fig.7D Schematic diagram of the time domain location of the paging message provided in the embodiment of the present application Figure 4 ;

[0219] Figure 8 Schematic diagram of the communication method provided in the embodiment of the present application Figure 4 ;

[0220] Fig. 9 Schematic diagram of the time domain location of the paging message provided in the embodiment of the present application Figure 5 ;

[0221] Fig.10 Schematic diagram of the communication method provided in the embodiment of the present application Figure 5 ;

[0222] Fig.11 Schematic diagram of the communication method provided in the embodiment of the present application Figure 6 ;

[0223] Fig.12 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 1 ;

[0224] Fig.13 A second structural diagram of a communication device provided in an embodiment of the present application;

[0225] Fig.14 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 3 ;

[0226] Fig.15 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 4 . DETAILED DESCRIPTION

[0227] In the communication system, the terminal may be in a radio resource control connected (RRC-connected) state, an RRC-idle state, or an RRC-inactive state. In the embodiment of the present application, the RRC-connected state may be replaced by an RRC-connected state, an RRC connected state, a first state, a first state, or other names that can indicate that the terminal is in an RRC-connected state. The RRC-idle state may be replaced by an RRC-idle state, an RRC idle state, a second state, a second state, or other names that can indicate that the terminal is in an RRC-idle state. The RRC-inactive state may be replaced by an RRC-inactive state, an RRC inactive state, a third state, a third state, or other names that can indicate that the terminal is in an RRC-inactive state, without limitation.

[0228] When the terminal is in the RRC-connected state, the access network device knows that the terminal is within the coverage or management scope of the access network device. The core network device knows which access network device the terminal is within the coverage or management scope. The access network device and the terminal can transmit data channels and / or control channels. For example, the access network device can send a terminal-specific physical downlink control channel (physical downlink control channel, PDCCH) and / or a terminal-specific physical downlink shared channel (physical downlink shared channel, PDSCH) to the terminal, and the terminal can also send a terminal-specific physical uplink shared channel (physical uplink sharedchannel, PUSCH) and / or a terminal-specific physical uplink control channel (physical uplink controlchannel, PUCCH) to the access network device.

[0229] When the terminal is in the RRC-idle state, the access network device does not know whether the terminal is within the coverage of the access network device or within the management scope of the access network device. The core network device does not know which access network device the terminal is within the coverage or management scope. The terminal can receive paging messages from the core network device. However, the terminal cannot perform unicast data transmission with the access network device. For example, the terminal cannot receive the terminal-specific PDSCH and PDCCH from the access network device, and the terminal cannot send the terminal-specific PUSCH and PUCCH to the access network device.

[0230] When the terminal is in the RRC-inactive state, the access network device does not know whether the terminal is within the coverage of the access network device or within the management scope of the access network device. The core network device knows which access network device the terminal is within the coverage or management scope. The terminal can receive paging messages from the access network device or the core network device.

[0231] In the embodiment of the present application, the terminal receiving a paging message from an access network device can be understood as the terminal receiving a paging message from the access network device, or the paging message is used by the access network device to paging the terminal. The terminal receiving a paging message from the core network can be understood as the terminal receiving a paging message from the core network, or the paging message is used by the core network device to paging the terminal. The terminal receiving a paging message from a core network device can be understood as: the terminal receives a paging message from the core network device through the access network device. Correspondingly, the core network device sending a paging message to the terminal can be understood as: the core network device sends a paging message to the terminal through the access network device. In other words, the core network device first sends a paging message to the access network device, and after the access network device receives the paging message, it sends the paging message to the terminal. A unified explanation is made here, and no further description is given later.

[0232] In the communication system, the terminal can also switch between the RRC-connected state, the RRC-idle state and the RRC-inactive state. For example, when the terminal is in the RRC-connected state, after receiving the RRC release message from the access network device, the RRC connection between the terminal and the access network device can be released and converted to the RRC-idle state or the RRC-inactive state. Optionally, after the terminal is converted to the RRC-inactive state, the access network device can send an RRC inactive transition report to the core network device to notify the core network device that the terminal is converted to the RRC-inactive state. When the terminal is in the RRC-idle state, after receiving the paging message from the access network device, the RRC establishment process can be initiated, or the RRC establishment process is triggered by the terminal's high layer. Subsequently, the terminal attempts to establish an RRC connection with the access network device to enter the RRC-connected state. When the terminal is in the RRC-inactive state, after receiving the paging message from the access network device, the RRC recovery process can be initiated, or the RRC recovery process is triggered by the terminal's high layer. Subsequently, the terminal attempts to restore the RRC connection with the access network device to enter the RRC-connected state. In addition, when the terminal is in the RRC-inactive state, it can also receive an RRC release (RRCrelease) message from the access network device to change from the RRC-inactive state to the RRC-idle state.

[0233] In a possible implementation, the terminal can use the DRX mode or the eDRX mode to receive paging messages in the RRC-inactive state or the RRC-idle state. For example, Table 1 shows the situation where different types of terminals use the DRX mode or the eDRX mode to receive paging messages. In Table 1, the long term evolution (LTE) terminal does not support eDRX, but supports DRX, and the maximum DRX cycle in the RRC-idle state and the RRC-inactive state is 2.56 seconds (s). The eMTC terminal supports eDRX, and the maximum eDRX cycle in the RRC-idle state is about 44 minutes (min), and the maximum eDRX cycle in the RRC-inactive state is 10.24s. The NB-IoT terminal does not have an RRC-inactive state, and the NB-IoT terminal supports eDRX, and the maximum eDRX cycle in the RRC-idle state is about 3 hours (h). The NR terminal does not support eDRX, but supports DRX, and the maximum DRX cycle in the RRC-idle state and the RRC-inactive state is 2.56s.

[0234] Table 1

[0235] RRC-idle state RRC-inactive state LTE Terminal The maximum DRX cycle is 2.56s The maximum DRX cycle is 2.56s eMTC Terminal The maximum eDRX cycle is about 44 minutes The maximum eDRX cycle is 10.24s NB-IoT Terminal The maximum eDRX cycle is about 3 hours - NR Terminal The maximum DRX cycle is 2.56s The maximum DRX cycle is 2.56s

[0236] As can be seen from Table 1, LTE terminals and NR terminals do not support eDRX. In order to further reduce the power consumption of terminals, it is proposed that terminals in communication systems that do not support eDRX, such as REDCAP terminals, can also support eDRX. For example, a REDCAP terminal can use the eDRX mode to receive paging messages from core network devices in the RRC-idle state; or, a REDCAP terminal can use the eDRX mode to receive paging messages from access network devices or core network devices in the RRC-inactive state.

[0237] At present, for eMTC terminals, in the RRC-idle state, they can be awakened according to the DRX cycle at the position of the PTW in each eDRX cycle to receive messages from core network devices. In the RRC-inactive state, the eMTC terminal can be awakened according to the DRX cycle at the position of the PTW in each eDRX cycle to receive messages from core network devices and access network devices, and receive messages from access network devices at the position of the PO, for example, in addition to the PTW in each eDRX cycle. However, in the RRC-inactive state, in addition to supporting the reception of paging messages from access network devices at the position of the PO, the REDCAP terminal also supports the reception of paging messages from access network devices within the PTW. In this case, it is necessary to configure the position of the PTW for receiving messages from core network devices in the RRC-idle state and the RRC-inactive state for the REDCAP terminal, and also to configure the position of the PTW for receiving messages from access network devices in the RRC-inactive state for the REDCAP terminal. Therefore, the method of configuring eDRX parameters for eMTC terminals is not applicable to REDCAP terminals. Therefore, how to configure eDRX parameters in RRC-idle state and RRC-inactive state for REDCAP terminals is a problem that needs to be solved urgently.

[0238] In order to solve the above problems, the embodiments of the present application provide two solutions. In the first solution, the core network device can configure the eDRX parameters in the RRC-idle state and the RRC-inactive state. Before the terminal enters the RRC-inactive state, the access network device can determine whether to change the eDRX parameters configured by the core network device according to the situation. If the access network device determines not to change the eDRX parameters configured by the core network device, then in the RRC-idle state or the RRC-inactive state, the terminal receives the paging message of the access network device or the core network device according to the eDRX parameters configured by the core network device. If the access network device determines to change the eDRX parameters configured by the core network device, then in the RRC-idle state or the RRC-inactive state, the terminal receives the paging message of the access network device or the core network device according to the changed eDRX parameters. In this solution, the access network device can change the eDRX parameters configured by the core network device, thereby reducing the delay of the terminal receiving the paging message and improving the user experience. In addition, in this solution, the terminal can receive the paging message of the core network device and the paging message of the access network device according to the same eDRX parameter, which is easy to implement and has high feasibility. Figure 4-Figure 5 The method shown is described.

[0239] In the first solution, the terminal uses the same eDRX parameters when receiving paging messages from the core network device and the access network device. However, in the communication system, the interval between the core network device sending paging messages is usually longer than the interval between the access network device sending paging messages. Therefore, if the terminal receives the paging message from the access network device according to the eDRX parameters configured by the core network device, it will result in a longer delay and a poor user experience. If the terminal receives the paging message from the core network device according to the eDRX parameters configured by the access network device, it will result in higher power consumption and shorter battery life.

[0240] In order to take into account the delay of the terminal receiving the paging message of the access network device and the power consumption of the terminal, in the second solution, the core network device and the access network device can be configured with eDRX parameters respectively. The eDRX parameters configured by the core network device can be used for the terminal to receive the paging message from the core network device in the RRC-idle state or the RRC-inactive state, and the eDRX parameters configured by the access network device can be used for the terminal to receive the paging message from the access network device in the RRC-inactive state. In this solution, if there are paging time units of the core network device and paging time units of the access network device in the first time unit, the terminal can receive the paging message of the core network device and / or the paging message of the access network device in one of the paging time units. If there is a paging time unit of the core network device and no paging time unit of the access network device in the first time unit, the terminal receives the paging message of the core network device in the paging time unit of the core network device. If there is a paging time unit of the access network device and no paging time unit of the core network device in the first time unit, the terminal receives the paging message of the access network device in the paging time unit of the access network device. In this way, the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal. The first time unit can be a superframe. The paging time unit can include PTW or PO. The introduction of the second solution can be referred to as follows Figure 6 and Figure 8 The method shown is described.

[0241] It can be understood that the embodiments of the present application are all introduced by taking the terminal using the eDRX mode to receive the paging message as an example. In specific applications, the terminal can also use the eDRX mode to receive broadcast messages, system information, earthquake and tsunami warning system (ETWS), etc., without limitation. The process of the terminal using the eDRX mode to receive broadcast messages, system information, and ETWS can refer to the introduction of the terminal using the eDRX mode to receive the paging message in the embodiment of the present application, and will not be repeated.

[0242] In order to facilitate understanding of the method provided in the embodiment of the present application, eDRX is first explained.

[0243] In the embodiment of the present application, the eDRX cycle may be in units of hyper frames, for example, the eDRX cycle is 2 hyper frames or 3 hyper frames. A super frame may be 10.24 seconds. It should be understood that in specific applications, the eDRX cycle may also be in units of other time units without limitation.

[0244] In a possible implementation, the eDRX cycle includes at least one paging occasion (PO). If the eDRX cycle includes a PO, the terminal is awakened once at the position of the PO in the eDRX cycle to receive a paging message. In this case, the eDRX cycle is the time length between two adjacent POs. Specifically, it can be as follows Figure 1 As shown in (c) in the figure. If the eDRX cycle includes multiple POs, the time window for receiving multiple POs can be called PTW. In the PTW, the time length between two adjacent POs is the DRX cycle. In the PTW, the terminal is awakened once at the position of each PO to receive a paging message. In this case, the eDRX cycle is the time length between the start position / end position of two adjacent PTWs. As an example, if the eDRX cycle is greater than the second time length, the eDRX cycle includes multiple POs, or the eDRX cycle includes PTW; if the eDRX cycle is less than or equal to the second time length, the eDRX cycle includes one PO, and the second time length can be 5.12s, 10.24s, etc., without limitation. The following specifically describes the method for determining the position of the PTW when the eDRX cycle includes multiple POs and the method for determining the position of the PO when the eDRX cycle includes one PO.

[0245] 1. Method for determining the position of PTW

[0246] In a possible implementation, the paging hyperframe (PH) may be a hyperframe number (H-SFN) satisfying the following formula: H-SFN mod T eDRX,H =(UE_ID_H mod T eDRX,H ), where PH can be referred to as the superframe number where the paging message is located, and mod is the modulus operator. eDRX,His the eDRX cycle in superframes. UE_ID_H is the value corresponding to the highest 12 bits or 10 bits in the hashed ID. For example, if the paging radio network temporary identifier (P-RNTI) is monitored on the PDCCH or the machine type communication physical downlink control channel (MTC physical downlink control channel, MPDCCH), UE_ID_H is the value corresponding to the highest 10 bits in the hashed ID. If the P-RNTI is monitored on the narrowband physical downlink control channel (NPDCCH), UE_ID_H is the value corresponding to the highest 12 bits in the hashed ID. In the NR system, the hashed ID can be the fifth generation (5G) system architecture evolved-temporary mobile subscriber identity (5G-S-TMSI).

[0247] In a possible implementation, the system frame number (SFN) at the starting position of the PTW satisfies the following formula: SFN = 256*i eDRX Among them, i eDRX Satisfies the following formula: eDRX =floor(UE_ID_H / T eDRX,H )mod4, floor() is the rounding symbol. The SFN where the end position of PTW is located satisfies the following formula: SFN = (PTW_start + L*100-1)mod1024. Among them, PTW_start is the SFN where the starting position of PTW is located, L is the length of PTW, and the unit of L can be seconds. In this way, the position of the first PTW after the terminal enters the RRC-idle state or the RRC-inactive state can be determined.

[0248] It can be understood that after the position of the first PTW is determined, the position of the second PTW, the position of the third PTW, etc. can be determined according to the eDRX cycle. For example, the starting position of the second PTW is the sum of the starting position of the first PTW and the eDRX cycle, and the ending position of the second PTW is the sum of the starting position of the second PTW and the length of the PTW, or the ending position of the second PTW is the sum of the ending position of the first PTW and the eDRX cycle.

[0249] 2. How to determine the location of PO

[0250] In a possible implementation, the paging frame (PF) can be a SFN that satisfies the following formula: SFNmodT = (Tdiv N) * (UE_IDmodN). Among them, PF is the system frame number where the paging message is located, T is the DRX cycle, and div is the integer divisibility symbol. If the P-RNTI is monitored on the PDCCH, the UE_ID is 5G-S-TMSI mod 1024. If the P-RNTI is monitored on the MPDCCH or NPDCCH, the UE_ID is 5G-S-TMSI mod 16384. N is the minimum value of T and nB, and nB can be 4T, 2T, T, T / 2, T / 4, T / 8, T / 16, T / 32, T / 64, T / 128 or T / 256. For NB-IoT terminals, nB can also be T / 512 or T / 1024. The subframe number i_s where the PO is located can satisfy the following formula: i_s = floor(UE_ID / N)modNs. Where Ns is the maximum value between 1 and nB / T. In this way, the position of the first PO after the terminal enters the RRC-idle state or the RRC-inactive state can be determined.

[0251] It can be understood that after the position of the first PO is determined, the position of the second PO, the position of the third PO, etc. can be determined according to the eDRX cycle. For example, the position of the second PO is the sum of the position of the first PO and the eDRX cycle.

[0252] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0253] The method provided in the embodiment of the present application can be used in various communication systems. For example, the communication system can be an LTE system, a 5G communication system, a wireless-fidelity (WiFi) system, a communication system related to the 3rd Generation Partnership Project (3GPP), a future evolved communication system, or a system integrating multiple systems, etc., without limitation. Among them, 5G can also be referred to as NR. Figure 2A Taking the communication system 20 shown as an example, the method provided in the embodiment of the present application is described.

[0254] like Figure 2A , which is a schematic diagram of the architecture of a communication system 20 provided in an embodiment of the present application. Figure 2AIn the figure, the communication system 20 may include one or more core network devices 206 (only one is shown), access network devices 201 and 202 communicatively connected to the core network device 206, terminals 203 and 204 communicatively connected to the access network device 201, and terminal 205 communicatively connected to the access network device 202. Figure 2A It is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

[0255] exist Figure 2A In the embodiment of the present application, the core network device 206 may be a mobility management network element, which is mainly responsible for the access authentication, mobility management, signaling interaction between various functional network elements, etc. of the terminal, such as: managing the user's registration status, the user's connection status, the user's registration and network entry, the tracking area update, the cell switching user authentication and key security. As an example, if the communication system 20 is a 5G communication system, the network element or entity corresponding to the mobility management network element may be an access and mobility management function (AMF). In the embodiment of the present application, the device for implementing the function of the core network device may be a core network device; or it may be a device that can support the core network device to implement the function, such as a chip system, which may be installed in the core network device or used in combination with the core 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 method provided in the embodiment of the present application, the method provided in the embodiment of the present application is described by taking the device for implementing the function of the core network device as an example that the core network device is an example.

[0256] exist Figure 2A In the Uu port, the access network device can provide wireless access services for the terminal. Specifically, each access network device corresponds to a service coverage area. The terminal entering the area can communicate with the access network device through the Uu port to receive the wireless access service provided by the access network device. Optionally, the service coverage area may include one or more cells. The terminal and the access network device can communicate through the Uu port link. Among them, the Uu port link can be divided into an uplink (uplink, UL) and a downlink (downlink, DL) according to the direction of the data transmitted thereon. Uplink data sent from the terminal to the access network device can be transmitted on the UL, and downlink data transmitted from the access network device to the terminal can be transmitted on the DL. For example: Figure 2A In the example, the terminal 203 is located in the coverage area of ​​the access network device 201. The access network device 201 can send downlink data to the terminal 203 via DL, and the terminal 203 can send uplink data to the access network device 201 via UL.

[0257] The access network device in the embodiment of the present application, for example: access network device 201 or access network device 202 can be any device with wireless transceiver function. Including but not limited to: evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, base station (gNodeB or gNB) or transceiver point (transmission receiving point / transmission reception point, TRP) in NR, base station of subsequent evolution of 3GPP, access node in WiFi system, wireless relay node, wireless backhaul node, etc. The base station can be: macro base station, micro base station, micro-micro base station, small station, relay station, or balloon station, etc. Multiple base stations can support the network of the same technology mentioned above, or they can support the network of different technologies mentioned above. The base station can include one or more co-site or non-co-site TRPs. The access network device can also be a wireless controller in the cloud radio access network (CRAN) scenario. The access network device can also be a centralized unit (CU) and / or a distributed unit (DU). The access network device may also be a server, a wearable device, a machine communication device, or a vehicle-mounted device. The following is an example of an access network device being a base station. The multiple access network devices may be base stations of the same type or different types. The base station may communicate with the terminal or communicate with the terminal through a relay station. The terminal may communicate with multiple base stations of different technologies. For example, the terminal may communicate with a base station supporting an LTE network or a base station supporting a 5G network, and may also support dual connections with base stations of LTE networks and base stations of 5G networks. In an embodiment of the present application, a device for implementing the function of an access network device may be an access network device; or it may be a device capable of supporting the access network device to implement the function, such as a chip system, which may be installed in the access network device or used in combination with the access network device. In an 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 method provided in the embodiment of the present application, the method provided in the embodiment of the present application is described by taking the device for implementing the function of the access network device as an access network device as an example.

[0258] The terminal in the embodiment of the present application, for example: terminal 203, terminal 204 or terminal 205 is a device with wireless transceiver function. The terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal can also be called a terminal device, and the terminal device can be a user equipment (UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device or a computing device with wireless communication function. Exemplarily, the UE can be a mobile phone, a tablet computer or a computer with wireless transceiver function. The terminal device can also be a virtual reality (VR) terminal device, an augmented reality (AR) 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, or a wireless terminal in a smart home, etc. In the embodiment of the present application, the device for realizing the function of the terminal may be a terminal; or it may be a device capable of supporting the terminal to realize the function, such as a chip system, which may be installed in the terminal or used in combination with the terminal. 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 method provided in the embodiment of the present application, the method provided in the embodiment of the present application is described by taking the case that the device for realizing the function of the terminal is a terminal as an example.

[0259] 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. For example, a wearable device is not just a hardware device, but also a device that realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include devices that are fully functional, large in size, and can realize complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as devices 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.

[0260] In this 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 an intelligent network of human-machine interconnection and object-to-object interconnection. The terminal in this application may be a terminal in machine type communication (MTC).

[0261] In this application, the terminal may also be a REDCAP terminal. REDCAP terminals can be divided into industrial wireless sensors, video cameras, wearable devices, etc. according to their usage types.

[0262] Figure 2A The communication system 20 shown is only used as an example and is not used to limit the technical solution of the present application. Those skilled in the art should understand that in the specific implementation process, the communication system 20 may also include other devices, and the number of core network devices, access network devices or terminals may also be determined according to specific needs without limitation.

[0263] In some embodiments, the access network device 201 and / or the access network device 202 may be a centralized unit-distributed unit separated architecture. That is, the access network device 201 and / or the access network device 202 may include a centralized unit and one or more distributed units. Among them, the centralized unit is mainly responsible for centralized wireless resource and connection management control, and has wireless high-level protocol stack functions, such as packet data convergence protocol (PDCP) layer functions, etc. Optionally, the centralized unit can be used to configure eDRX parameters. The distributed unit has a distributed user plane processing function, mainly with physical layer functions and layer 2 functions with high real-time requirements. For example, the distributed unit has physical layer (PHY) functions, media access control (MAC) layer functions and radio link control (RLC) layer functions, etc. The distributed unit can also receive paging messages from the centralized unit and send paging messages to the terminal. In the embodiment of the present application, the device for realizing the function of the centralized unit may be a centralized unit; it may also be a device that can support the centralized unit to realize the function, such as a chip system, which can be installed in the centralized unit or used in combination with the centralized unit. In an embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the method provided in the embodiment of the present application, the method provided in the embodiment of the present application is described by taking the device for realizing the function of the centralized unit as CU as an example. In an embodiment of the present application, the device for realizing the function of the distributed unit may be a distributed unit; it may also be a device that can support the distributed unit to realize the function, such as a chip system, which may be installed in the distributed unit or used in combination with the distributed unit. In the method provided in the embodiment of the present application, the method provided in the embodiment of the present application is described by taking the device for realizing the function of the distributed unit as DU as an example.

[0264] Taking the access network device 201 as a CU-DU separation architecture as an example, the architecture of the access network device 201 can be as follows: Figure 2B shown. Figure 2B In the embodiment, the access network device 201 includes a CU 2011, a DU 2012, and a DU 2013. Among them, the DU 2012 and the DU 2013 can be connected to the terminal, for example, the DU 2012 is connected to the terminal 203, and the DU 2013 is connected to the terminal 204. The CU 2011 can be connected to other devices, for example, the CU 2011 is connected to the access network device 202. The CU 2011 can also be connected to the core network device 206.

[0265] It should be understood that Figure 2BThe CU-DU architecture shown is only used for example and is not used to limit the technical solution of the present application. Those skilled in the art should understand that in the specific implementation process, the CU-DU architecture can determine the number of CUs and DUs according to specific needs. At the same time, the CU 2011, DU 2012 and DU 2013 can be deployed in the same device or in different devices without limitation.

[0266] Optionally, the present application embodiment Figure 2A The related functions of each network element (for example, core network device 206, access network device 201, access network device 202, terminal 203, terminal 204 or terminal 205) in the network can be implemented by one device, or by multiple devices together, or by one or more functional modules in one device, and the embodiments of the present application do not specifically limit this. It can be understood that the above functions can be network elements in hardware devices, or software functions running on dedicated hardware, or a combination of hardware and software, or virtualization functions instantiated on a platform (for example, a cloud platform).

[0267] In the specific implementation, Figure 2A Each device or network element shown can be used Figure 3 The structure shown, or including Figure 3 Parts shown. Figure 3 The hardware structure diagram of the communication device applicable to the embodiment of the present application is shown. The communication device 30 includes at least one processor 301 and at least one communication interface 304, which are used to implement the method provided in the embodiment of the present application. The communication device 30 may also include a communication line 302 and a memory 303.

[0268] The processor 301 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0269] The communication link 302 may include a path to transmit information between the above-mentioned components, such as a bus.

[0270] The communication interface 304 is used to communicate with other devices or communication networks. The communication interface 304 can be any transceiver-like device, such as an Ethernet interface, a radio access network (RAN) interface, a wireless local area network (WLAN) interface, a transceiver, a pin, a bus, or a transceiver circuit.

[0271] The memory 303 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory may be independent and coupled to the processor 301 via a communication line 302. The memory 303 may also be integrated with the processor 301. The memory provided in the embodiment of the present application may generally be non-volatile. Among them, the memory 303 is used to store the computer execution instructions involved in executing the scheme provided in the embodiment of the present application, and is controlled by the processor 301 to execute. The processor 301 is used to execute the computer-executable instructions stored in the memory 303, so as to implement the method provided in the embodiment of the present application.

[0272] The computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.

[0273] The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.

[0274] As an embodiment, the processor 301 may include one or more CPUs, such as Figure 3 CPU0 and CPU1 in.

[0275] As an embodiment, the communication device 30 may include multiple processors, such as Figure 3 301 and processor 307 in the embodiment of the present invention. Each of these processors may be a single-CPU processor or a multi-CPU processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0276] As an embodiment, the communication device 30 may further include an output device 305 and / or an input device 306. The output device 305 is coupled to the processor 301 and can display information in a variety of ways. For example, the output device 305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 306 is coupled to the processor 301 and can receive user input in a variety of ways. For example, the input device 306 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0277] Understandably, Figure 3 The structure shown in the figure does not constitute a limitation on the communication device, except Figure 3 In addition to the components shown, the communication device may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0278] Below Figure 2A Taking the architecture shown in the figure as an example, the communication method provided by the embodiment of the present application is described. Each network element in the following embodiment may have Figure 3 The parts shown are not described in detail.

[0279] It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not impose any specific limitations on this.

[0280] In order to facilitate the description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like may be used to distinguish between technical features with the same or similar functions. 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 necessarily limit the differences. In the embodiments of the present application, the words "exemplary" or "for example" are used to represent examples, illustrations or explanations, and any embodiment or design described as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or design. The use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0281] It can be understood that the same step or steps or technical features with the same functions in the embodiments of the present application can be referenced to each other in different embodiments.

[0282] It is understandable that in the embodiments of the present application, the core network device, the access network device or the terminal may perform some or all of the steps in the embodiments of the present application, and these steps are only examples. The embodiments of the present application may also perform other steps or variations of various steps. In addition, the various steps may be performed in different orders presented in the embodiments of the present application, and it is possible that not all of the steps in the embodiments of the present application need to be performed.

[0283] like Figure 4 As shown, a communication method provided by an embodiment of the present application is provided, in which a terminal can receive paging messages from a core network device and an access network device according to the same eDRX parameter. The communication method includes S401-S402.

[0284] S401: The access network device obtains first parameter information.

[0285] Among them, the access network equipment can be Figure 2A Any access network device in the communication system 20 shown, such as access network device 201 or access network device 202.

[0286] The first parameter information may be used to indicate an eDRX parameter. The eDRX parameter may be used for a core network device or an access network device to send a paging message in an eDRX mode, or the eDRX parameter may be used for a terminal to receive a paging message in an eDRX mode. The core network device may be a core network device in the communication system 20 that is communicatively connected to the access network device, for example, the core network device 206. The terminal may be a terminal in the communication system 20 that is communicatively connected to the access network device. For example, if the access network device is the access network device 201 in the communication system 20, the terminal may be the terminal 203 or the terminal 204 in the communication system 20, and if the access network device is the access network device 202 in the communication system 20, the terminal may be the terminal 205 in the communication system 20. The first parameter information may be replaced with the eDRX parameter information configured for the core network device, the common eDRX parameter information (common eDRX parameter information), etc., without limitation.

[0287] In a possible implementation, the first parameter information includes an eDRX cycle. Optionally, the first parameter information also includes the length of the PTW; or, the first parameter information also includes the number of DRX cycles included in the PTW. It can be understood that if the first parameter information includes the eDRX cycle, it can indicate that the eDRX cycle includes one PO. If the first parameter information includes the length of the eDRX cycle and the PTW, or, the first parameter information includes the eDRX cycle and the number of DRX cycles included in the PTW, it can indicate that the eDRX cycle includes multiple POs or PTWs.

[0288] The DRX cycle may be a default DRX cycle; or, the DRX cycle may be a terminal-specific DRX cycle (UE specific DRX cycle); or, the DRX cycle may be a DRX cycle of an access network device (RAN DRX cycle); or, the DRX cycle may be a minimum or maximum value between a default DRX cycle and a UE specific DRX cycle; or, the DRX cycle may be a minimum or maximum value between a default DRX cycle and a RAN DRX cycle. For example, if the terminal receives a paging message from a core network device, the DRX cycle may be the default DRX cycle, or the UE specific DRX cycle, or the minimum or maximum value between the default DRX cycle and the UE specific DRX cycle. If the terminal receives a paging message from an access network device, the DRX cycle may be the default DRX cycle, or the RAN DRX cycle, or the minimum or maximum value between the default DRX cycle and the RAN DRX cycle.

[0289] In an embodiment of the present application, the default DRX cycle and the RAN DRX cycle may be configured by an access network device. As an example, the access network device may send the default DRX cycle to the terminal via a system information block (SIB). The access network device may send the RAN DRX cycle to the terminal via an RRC release message. The UE specific DRX cycle may be configured by a core network device. As an example, the core network device may send the UE specific DRX cycle to the terminal via a non access stratum (NAS) message.

[0290] In a possible implementation, the access network device may obtain the first parameter information locally or from other devices. If the access network device obtains the first parameter information locally, the first parameter information may be pre-configured locally, for example, the first parameter information is specified in the protocol, or the first parameter information may be obtained by the access network device from other devices in advance and stored locally. For example, the first parameter information may be obtained by the access network device from a core network device in advance and stored locally. If the access network device obtains the first parameter information from other devices, the access network device may receive the first parameter information from the core network device. The first parameter information may be a message, or may be an information element or a field contained in a message, without limitation. As an example, the first parameter information may be carried in an initial context setup request message; or, the first parameter information may be carried in the core network assistance information for RRC inactive in the RRC-inactive state in the initial context setup request message.

[0291] Optionally, after the access network device obtains the first parameter information, it may send a paging message to the terminal according to the first parameter information. Correspondingly, the terminal may receive a paging message from the access network device according to the first parameter information. It is understandable that the terminal may obtain the first parameter information before receiving the paging message from the access network device according to the first parameter information. As an example, the terminal may obtain the first parameter information locally or from other devices. If the terminal obtains the first parameter information locally, the first parameter information may be pre-configured locally, for example, the first parameter information is specified in the protocol, or the first parameter information may be obtained by the terminal from other devices in advance and stored locally. For example, the first parameter information may be obtained by the terminal from the core network device in advance and stored locally. If the terminal obtains the first parameter information from other devices, the terminal may receive the first parameter information from the core network device. The first parameter information may be a message, or an information element or a field contained in the message, without limitation. As an example, the first parameter information may be carried in a NAS message.

[0292] Further, the access network device sends a paging message to the terminal according to the first parameter information, including: the access network device determines the first time domain position according to the first parameter information, and sends a paging message to the terminal at the first time domain position. Among them, the first time domain position may include the position of at least one paging time unit. The paging time unit may include PTW or PO. If the paging time unit includes PTW, the eDRX cycle included in the first parameter information includes multiple POs; if the paging time unit includes PO, the eDRX cycle included in the first parameter information includes one PO. Correspondingly, the terminal receives a paging message from the access network device according to the first parameter information, including: the terminal determines the first time domain position according to the first parameter information, and receives the paging message from the access network device at the first time domain position. It can be understood that when the access network device sends a paging message to the terminal, or when the terminal receives a paging message from the access network device, the terminal may be in an RRC-inactive state. The process of the terminal determining the first time domain position according to the first parameter information is similar to the process of the access network device determining the first time domain position according to the first parameter information. The following is an example of the access network device determining the first time domain position according to the first parameter information.

[0293] In a possible implementation, if the paging time unit includes a PTW, the access network device sending a paging message to the terminal at the first time domain position can be understood as the access network device sending a paging message to the terminal at the position of at least one PTW according to the DRX cycle. The access network device determines the first time domain position according to the first parameter information when the terminal is in the RRC-connected state or when the terminal is in the RRC-inactive state. For example, when the access network device determines that the RRC connection between the access network device and the terminal is to be released, the first time domain position is determined according to the first parameter information; or, when the access network device sends an RRC release message to the terminal, the first time domain position is determined according to the first parameter information; or, after the access network device sends an RRC release message to the terminal, the first time domain position is determined according to the first parameter information. Among them, the RRC release message can be used to release the terminal to the RRC-inactive state.

[0294] Exemplarily, taking the first parameter information including the eDRX cycle as an example, after the access network device obtains the first parameter information, it can determine the location of at least one PO according to the above PO location determination method. Subsequently, the access network device can send a paging message to the terminal at the location of at least one PO.

[0295] Exemplarily, taking the first parameter information including the eDRX cycle and the length of the PTW as an example, after the access network device obtains the first parameter information, it can determine the location of at least one PTW according to the above PTW location determination method. Subsequently, the access network device can send a paging message to the terminal at the location of at least one PTW.

[0296] Exemplarily, taking the first parameter information including the eDRX cycle and the number of DRX cycles included in the PTW as an example, after the access network device obtains the first parameter information, it can determine the length of the PTW according to the DRX cycle and the number of DRX cycles included in the PTW (for example, the length of the PTW is the product of the DRX cycle and the number of DRX cycles included in the PTW), and then determine the position of at least one PTW according to the above-mentioned method for determining the position of the PTW. Subsequently, the access network device can send a paging message to the terminal at the position of at least one PTW.

[0297] S402: The access network device sends the second parameter information to the terminal and the core network device. Correspondingly, the terminal and the core network device receive the second parameter information from the access network device.

[0298] Among them, the second parameter information can be used to indicate the changed eDRX parameters. The changed eDRX parameters can be used after S402, when the core network device or access network device adopts the eDRX mode to send paging messages; or, the changed eDRX parameters can be used after S402, when the terminal adopts the eDRX mode to receive paging messages; or, the changed eDRX parameters can be used in the RRC-inactive state, when the core network device or access network device adopts the eDRX mode to send paging messages; or, the changed eDRX parameters can be used in the RRC-inactive state, when the terminal adopts the eDRX mode to receive paging messages. The second parameter information can replace the eDRX parameter information configured for the access network device, the changed common eDRX parameter information, the modified common eDRX parameter information, etc., without limitation.

[0299] It is understandable that the second parameter information can be a message, or a cell or a field contained in a message, without limitation. As an example, when the second parameter information is sent to the terminal, it can be carried in an RRC release message or an RRC connection reconfiguration (RRCReconfiguration) message. When the second parameter information is sent to the core network device, it can be carried in an RRC inactive transition report. It is understandable that the second parameter information can also be sent to the terminal by the access network device through the core network device. For example, the access network device can send the second parameter information to the core network device through the RRC inactive transition report. After receiving the second parameter information, the core network device sends the second parameter information to the terminal through a NAS message.

[0300] In a possible implementation, the second parameter information includes an eDRX cycle. Optionally, the second parameter information also includes the length of the PTW; or, the second parameter information also includes the number of DRX cycles included in the PTW. It can be understood that if the second parameter information includes the eDRX cycle, it can indicate that the eDRX cycle includes one PO. If the second parameter information includes the length of the eDRX cycle and the PTW, or, the second parameter information includes the eDRX cycle and the number of DRX cycles included in the PTW, it can indicate that the eDRX cycle includes multiple POs or PTWs.

[0301] Further, the eDRX parameter indicated by the second parameter information is different from the eDRX parameter indicated by the first parameter information. The eDRX parameter indicated by the second parameter information is different from the eDRX parameter indicated by the first parameter information, which can be understood as: the eDRX parameter indicated by the second parameter information is completely different or partially different from the eDRX parameter indicated by the first parameter information. For example, the eDRX cycle included in the second parameter information is different from the eDRX cycle included in the first parameter information; or, the length of the eDRX cycle and PTW included in the second parameter information is different from the length of the eDRX cycle and PTW included in the first parameter information; or, the length of the PTW included in the second parameter information is different from the length of the PTW included in the first parameter information; or, the number of DRX cycles included in the second parameter information is different from the number of DRX cycles included in the first parameter information; or, the number of eDRX cycles and DRX cycles included in the second parameter information is different from the number of eDRX cycles and DRX cycles included in the first parameter information.

[0302] In a possible implementation, when the access network device determines that the terminal enters the RRC-inactive state, the second parameter information is sent to the terminal and the core network device. For example, before the access network device sends an RRC release message to the terminal, or when the access network device sends an RRC release message to the terminal, or after the access network device sends an RRCrelease message to the terminal, the second parameter information is sent to the terminal and the core network device. The RRC release message is used to release the RRC connection between the terminal and the access network device, so that the terminal is converted to the RRC-inactive state.

[0303] Optionally, the access network device determines whether to send the second parameter information to the terminal and the core network device according to the terminal capability information and / or the first condition information. If the access network device determines whether to send the second parameter information to the terminal and the core network device according to the terminal capability information, before S402, the access network device may send a terminal capability query (UEcapability enquiry) message to the terminal to request the terminal capability information and receive the terminal capability information (UEcapability info) from the terminal. Among them, the terminal capability information may indicate at least one of the following information: whether the terminal supports eDRX, whether the terminal supports the RRC-inactive state, and whether the terminal supports eDRX in the RRC-inactive state. The first condition information may indicate whether the first parameter information is suitable for the access network device to send a paging message to the terminal. For example, the first condition information may indicate whether the eDRX cycle included in the first parameter information is greater than or equal to the first time length.

[0304] Exemplarily, taking the example of the access network device determining whether to send the second parameter information to the terminal and the core network device according to the terminal capability information, if the terminal capability information indicates that the terminal does not support eDRX, or the terminal capability information indicates that the terminal does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX and does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX in the RRC-inactive state, then the access network device does not send the second parameter information to the terminal and the core network device, that is, the embodiment of the present application does not execute S402. If the terminal capability information indicates that the terminal supports eDRX and supports the RRC-inactive state, or the terminal capability information indicates that the terminal supports eDRX in the RRC-inactive state, then the access network device sends the second parameter information to the terminal and the core network device.

[0305] Exemplarily, taking the example of an access network device determining whether to send the second parameter information to the terminal and the core network device according to the first condition information, if the first condition information indicates that the eDRX cycle included in the first parameter information is greater than or equal to the first time length, it means that the delay of the access network device sending a paging message to the terminal according to the first parameter information is large. In this case, the access network device sends the second parameter information to the terminal and the core network device, and the delay of the access network device sending a paging message to the terminal according to the second parameter information is less than the delay of sending a paging message to the terminal according to the first parameter information. If the first condition information indicates that the eDRX cycle included in the first parameter information is less than the first time length, it means that the delay of the access network device sending a paging message to the terminal according to the first parameter information is small. In this case, the access network device does not send the second parameter information to the terminal and the core network device, that is, the embodiment of the present application does not execute S402.

[0306] Exemplarily, taking the example that the access network device determines whether to send the second parameter information to the terminal and the core network device according to the terminal capability information and the first condition information, if the terminal capability information indicates that the terminal does not support eDRX, or the terminal capability information indicates that the terminal does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX and does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX in the RRC-inactive state, or the first condition information indicates that the eDRX cycle included in the first parameter information is less than the first time length, then the access network device does not send the second parameter information to the terminal and the core network device, that is, the embodiment of the present application does not execute S402. If the terminal capability information indicates that the terminal supports eDRX and supports the RRC-inactive state, and the first condition information indicates that the eDRX cycle included in the first parameter information is greater than or equal to the first time length, or the terminal capability information indicates that the terminal supports eDRX in the RRC-inactive state, and the first condition information indicates that the eDRX cycle included in the first parameter information is greater than or equal to the first time length, then the access network device sends the second parameter information to the terminal and the core network device.

[0307] It can be understood that if the access network device does not send the second parameter information to the terminal and the core network device, then when the terminal is in the RRC-inactive state, the access network device sends a paging message to the terminal according to the first parameter information. Correspondingly, the terminal receives the paging message from the access network device according to the first parameter information. When the terminal is in the RRC-idle state, the core network device sends a paging message to the terminal according to the first parameter information. Correspondingly, the terminal receives the paging message from the core network device according to the first parameter information. If the access network device sends the second parameter information to the terminal and the core network device, then when the terminal is in the RRC-inactive state, the access network device sends a paging message to the terminal according to the second parameter information. Correspondingly, the terminal receives the paging message from the access network device according to the second parameter information. When the terminal is in the RRC-idle state, the core network device sends a paging message to the terminal according to the second parameter information. Correspondingly, the terminal receives the paging message from the core network device according to the second parameter information. In this case, the terminal being in the RRC-idle state may mean that the terminal is released from the RRC-connected state to the RRC-inactive state and then released to the RRC-idle state. Among them, the process of the access network device sending a paging message to the terminal according to the second parameter information, the process of the core network device sending a paging message to the terminal according to the first parameter information, and the process of the core network device sending a paging message to the terminal according to the second parameter information can refer to the introduction of the access network device sending a paging message to the terminal according to the first parameter information in the above S401, and will not be repeated here.

[0308] In addition, when the terminal is in the RRC-inactive state, the core network device may also send a paging message to the terminal. For example, if the terminal is in the RRC-inactive state, but the core network device believes that the terminal is in the RRC-idle state (that is, when a missmatch occurs), the core network device may also send a paging message to the terminal. It can be understood that if the access network device does not send the second parameter information to the terminal and the core network device, and the terminal enters the RRC-inactive state, and the core network device has a missmatch, the core network device sends a paging message to the terminal according to the first parameter information; the access network device sends the second parameter information to the terminal and the core network device, and the terminal enters the RRC-inactive state, and the core network device has a missmatch, the core network device sends a paging message to the terminal according to the second parameter information.

[0309] It can be understood that according to the above description, before S402, the access network device and the core network device can send a paging message to the terminal according to the first parameter information. After S402, the access network device and the core network device can send a paging message to the terminal according to the second parameter information. Among them, the first parameter information is configured by the core network, which is more suitable for the core network device to send a paging message to the terminal, and can reduce the power consumption of the terminal. The second parameter information is configured by the access network device, which is more suitable for the access network device to send a paging message to the terminal, and can reduce the delay of the terminal receiving the paging message of the access network device, thereby improving the user experience. Therefore, if after S402, the terminal is in the RRC-inactive state, the access network device sends a paging message to the terminal according to the second parameter information, which can reduce the delay of the terminal receiving the paging message of the access network device, thereby improving the user experience. However, if after S402, the terminal is in the RRC-idle state, for example, the terminal is converted from the RRC-inactive state to the RRC-idle state, and the core network device sends a paging message to the terminal according to the second parameter information, which will cause the terminal power consumption to increase. In this case, the core network device may reconfigure the eDRX parameters. For example, the core network device may send reconfigured parameter information to the terminal and the access network device.

[0310] In an embodiment of the present application, the access network device may send the second parameter information to the terminal and the core network device at the same time, and the access network device may also send the second parameter information to the terminal and the core network device at different times respectively, without limitation.

[0311] based on Figure 4 In the method shown, the terminal can use the same eDRX parameters to receive paging messages from the core network device and the access network device, which is relatively easy to implement and has high feasibility. In addition, the access network device can change the eDRX parameters as needed, thereby reducing the delay of the terminal receiving the paging message of the access network device and improving the user experience.

[0312] The actions of the access network device, core network device or terminal in the above S401-S402 can be performed by Figure 3 The processor 301 in the communication device 30 shown calls the application code stored in the memory 303 for execution, and the embodiment of the present application does not impose any limitation on this.

[0313] exist Figure 4 In the method shown, the second parameter information is configured by the access network device. In a specific application, the second parameter information may also be configured by the core network device.

[0314] like Figure 5 As shown, another communication method provided in an embodiment of the present application includes S501-S502.

[0315] S501: The access network device sends auxiliary information to the core network device. Correspondingly, the core network device receives the auxiliary information from the access network device.

[0316] The auxiliary information may be used to assist the core network device in configuring eDRX parameters. The auxiliary information may be a message, or an information element or a field contained in a message, without limitation. As an example, the auxiliary information may be carried in a UE context suspend request message or a UE capability info indication message.

[0317] In a possible implementation, the auxiliary information may have the following three cases: Case 1, the auxiliary information may include the eDRX cycle expected by the access network device. Optionally, the auxiliary information also includes the length of the PTW expected by the access network device; or, the auxiliary information also includes the number of DRX cycles included in the PTW expected by the access network device. Case 2, the auxiliary information may indicate the range of eDRX parameters expected by the access network device. Exemplarily, the auxiliary information indicates the range of the eDRX cycle expected by the access network device, for example, indicating 2.56s-10.24s. Alternatively, the auxiliary information indicates the range of the eDRX cycle expected by the access network device and the range of the length of the PTW. Alternatively, the auxiliary information indicates the range of the eDRX cycle expected by the access network device and the range of the number of DRX cycles included in the PTW. Case 3, the auxiliary information may include multiple sets or groups of eDRX parameters, and each set or group of eDRX parameters may be as shown in Case 1. For example, the auxiliary information includes eDRX parameter 1 and eDRX parameter 2. Among them, eDRX parameter 1 includes the eDRX cycle 1 expected by the access network device, and eDRX parameter 2 includes the eDRX cycle 2 expected by the access network device and the length 1 of the PTW expected by the access network device. In case 4, the auxiliary information can be used to instruct the core network device to configure the eDRX parameters. For example, the auxiliary information can indicate parameters related to the terminal service, such as latency requirements, etc. After receiving the auxiliary information, the core network device can configure the eDRX parameters according to the auxiliary information.

[0318] In one possible implementation, when the access network device determines that the terminal is about to enter the RRC-inactive state, the access network device sends auxiliary information to the core network device. For example, before the access network device sends an RRC release message to the terminal, it sends auxiliary information to the core network device. The RRC release message is used to release the RRC connection between the terminal and the access network device, so that the terminal is converted to the RRC-inactive state. For another example, after the access network device receives a request message from the terminal requesting release to the RRC-inactive state, it sends auxiliary information to the core network device.

[0319] Optionally, the access network device determines whether to send auxiliary information to the core network device according to the terminal capability information. If the access network device determines whether to send auxiliary information to the core network device according to the terminal capability information, before S501, the access network device may receive the terminal capability information from the terminal. The introduction of the terminal capability information may refer to the above S402.

[0320] Exemplarily, taking the example of the access network device determining whether to send auxiliary information to the core network device according to the terminal capability information, if the terminal capability information indicates that the terminal does not support eDRX, or the terminal capability information indicates that the terminal does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX and does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX in the RRC-inactive state, then the access network device does not send auxiliary information to the core network device. If the terminal capability information indicates that the terminal supports eDRX and supports the RRC-inactive state, or the terminal capability information indicates that the terminal supports eDRX in the RRC-inactive state, then the access network device sends auxiliary information to the core network device.

[0321] Optionally, before S501, the access network device obtains the first parameter information. In this way, the access network device can determine whether to send auxiliary information to the core network device according to the first condition information. The process of the access network device obtaining the first parameter information can refer to the corresponding description in S401 above, and the introduction of the first condition information can refer to the description in S402 above.

[0322] Exemplarily, taking the case where the access network device determines whether to send auxiliary information to the core network device according to the first condition information, if the first condition information indicates that the eDRX cycle included in the first parameter information is greater than or equal to the first time length, it means that the access network device has a large delay in sending a paging message to the terminal according to the first parameter information. In this case, the access network device sends auxiliary information to the core network device. If the first condition information indicates that the eDRX cycle included in the first parameter information is less than the first time length, it means that the access network device has a small delay in sending a paging message to the terminal according to the first parameter information. In this case, the access network device does not send auxiliary information to the core network device.

[0323] It can be understood that the access network device can also determine whether to send auxiliary information to the core network device according to the terminal capability information and the first condition information. Exemplarily, if the terminal capability information indicates that the terminal does not support eDRX, or the terminal capability information indicates that the terminal does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX and does not support the RRC-inactive state, or the terminal capability information indicates that the terminal does not support eDRX in the RRC-inactive state, or the first condition information indicates that the eDRX cycle included in the first parameter information is less than the first time length, then the access network device does not send auxiliary information to the core network device. If the terminal capability information indicates that the terminal supports eDRX and supports the RRC-inactive state, and the first condition information indicates that the eDRX cycle included in the first parameter information is greater than or equal to the first time length, or the terminal capability information indicates that the terminal supports eDRX in the RRC-inactive state, and the first condition information indicates that the eDRX cycle included in the first parameter information is greater than or equal to the first time length, then the access network device sends auxiliary information to the core network device.

[0324] It can be understood that if the access network device does not send auxiliary information to the core network device, then when the terminal is in the RRC-idle state or the RRC-inactive state, the access network device or the core network device sends a paging message to the terminal according to the first parameter information. Correspondingly, the terminal receives the paging message from the access network device or the core network device according to the first parameter information. If the access network device sends auxiliary information to the core network device, then when the terminal is in the RRC-idle state or the RRC-inactive state, the access network device or the core network device sends a paging message to the terminal according to the first indication information in S502. Correspondingly, the terminal receives the paging message from the access network device according to the first indication information. Among them, the process of the access network device or the core network device sending a paging message to the terminal according to the first parameter information, and the process of the access network device or the core network device sending a paging message to the terminal according to the first indication information, can refer to the introduction of the access network device sending a paging message to the terminal according to the first parameter information in the above S401, which will not be repeated here.

[0325] S502: The core network device sends first indication information to the access network device and the terminal. Correspondingly, the terminal and the access network device receive the first indication information from the core network device.

[0326] The first indication information may be used to indicate a first eDRX parameter. The first eDRX parameter may be used after S502 for a core network device or an access network device to send a paging message in an eDRX mode; or, the first eDRX parameter may be used after S502 for a terminal to receive a paging message in an eDRX mode; or, the first eDRX parameter may be used in an RRC-inactive state for a core network device or an access network device to send a paging message in an eDRX mode; or, the first eDRX parameter may be used in an RRC-inactive state for a terminal to receive a paging message in an eDRX mode.

[0327] It is understandable that, for the above situation 1, the first eDRX parameter and the eDRX parameter indicated by the auxiliary information may be the same or different. It is understandable that if the first eDRX parameter and the eDRX parameter indicated by the auxiliary information are the same, S502 may not be executed. After S501, if the access network device does not receive the first indication information sent by the core network device within a period of time, for example, within 5 milliseconds, it may use the eDRX parameter indicated by the auxiliary information as the first eDRX parameter and send the auxiliary information or the first eDRX parameter to the terminal. Subsequently, when the terminal is in the RRC-idle state or the RRC-inactive state, the core network device or the access network device may send a paging message to the terminal according to the auxiliary information. For the above situation 2, the first eDRX parameter may be included in the range of the eDRX parameter indicated by the auxiliary information or may not be included in the range. In this case, the first indication information may include the eDRX cycle. Optionally, the first indication information also includes the length of the PTW; or the first indication information also includes the number of DRX cycles included in the PTW. For the above situation 3, the first eDRX parameter may be one set or one group of parameters among the multiple sets or groups of eDRX parameters included in the auxiliary information, or may not be one set or one group of parameters. If the first eDRX parameter is one set or one group of parameters among the multiple sets or groups of eDRX parameters included in the auxiliary information, the first indication information may include an identifier corresponding to the one set or one group of parameters, or the content included in the first indication information may be as described in the above situation 2. For the above situation 4, the first eDRX parameter may be determined based on parameters related to the terminal service, such as latency requirements, etc. The content included in the first indication information may be as described in the above situation 2.

[0328] It can be understood that the core network device can send the first indication information directly to the terminal, or send the first indication information to the terminal through the access network device. For example, if the core network device sends the first indication information directly to the terminal, the first indication information can be carried in a NAS (for example, registration accept) message. In this case, if the auxiliary information is carried in the terminal context suspend request, the first indication information sent by the core network device to the access network device can be carried in the terminal context suspend response (UE context suspend response). In the case where the auxiliary information is carried in the terminal context suspend request, if the core network device sends the first indication information to the terminal through the access network device, the first indication information sent by the core network device to the access network device can be carried in the terminal context suspend response, and the first indication information sent by the access network device to the terminal can be carried in the RRC release message.

[0329] It should be noted that if the core network device sends the first indication information directly to the terminal, the core network device may send the first indication information to the terminal and the access network device at the same time, or may send the first indication information to the terminal and the access network device at different times respectively, without restriction.

[0330] Optionally, after S502, the core network device uses the first eDRX parameter to send a paging message to the terminal. Correspondingly, the terminal uses the first eDRX parameter to receive a paging message from the core network device. The access network device uses the first eDRX parameter to send a paging message to the terminal. Correspondingly, the terminal uses the first eDRX parameter to receive a paging message from the access network device.

[0331] In a possible implementation, after S502, the core network device may reconfigure the eDRX parameters. For example, the core network device may send reconfigured parameter information to the terminal and the access network device.

[0332] based on Figure 5 According to the method shown, the terminal can receive paging messages from the access network device and the core network device according to the same eDRX parameters, which is easy to implement and has high feasibility. In addition, the access network device can send auxiliary information to the core network device as needed to trigger the core network device to configure appropriate eDRX parameters, so that the terminal can reduce the delay in receiving the paging message from the access network device and improve the user experience.

[0333] The actions of the access network device, core network device or terminal in the above S501-S503 can be performed by Figure 3 The processor 301 in the communication device 30 shown calls the application code stored in the memory 303 for execution, and the embodiment of the present application does not impose any limitation on this.

[0334] Above Figure 4 or Figure 5In the method shown, the terminal can receive paging messages from the core network device and the access network device according to the same eDRX parameters. However, in the communication system, the interval time for the core network device to send paging messages is usually greater than the interval time for the access network device to send paging messages. Therefore, if the terminal receives the paging message of the access network device according to the eDRX parameters configured by the core network device, it will result in a long delay and a poor user experience. If the terminal receives the paging message of the core network device according to the eDRX parameters configured by the access network device, it will cause the terminal to consume more power and shorten the battery life. In this case, either the access network device and the core network device need to configure the eDRX parameters multiple times, for example, when the access network device determines that the terminal is about to enter the RRC-inactive state, it configures the eDRX parameters applicable to the access network device, and when the core network device determines that the terminal is about to enter the RRC-idle state, it configures the eDRX parameters applicable to the core network device, and the signaling overhead is large. Or after S402 or S503, the terminal receives the paging message of the core network device according to the eDRX parameters applicable to the access network device, resulting in increased power consumption of the terminal.

[0335] In order to solve the above problems, the terminal can use different eDRX parameters to receive paging messages from the core network device and the access network device respectively. For example, the core network device and the access network device can be configured with eDRX parameters respectively. The eDRX parameters configured by the core network device can be used for the terminal to receive paging messages from the core network device in the RRC-idle state or the RRC-inactive state, and the eDRX parameters configured by the access network device can be used for the terminal to receive paging messages from the access network device in the RRC-inactive state, and if there are paging time units of the core network device and paging time units of the access network device in the first time unit at the same time, the terminal can receive the paging message of the core network device and / or receive the paging message of the access network device in one of the paging time units. If there is a paging time unit of the core network device and there is no paging time unit of the access network device in the first time unit, the terminal receives the paging message of the core network device in the paging time unit of the core network device. If there is a paging time unit of the access network device and there is no paging time unit of the core network device in the first time unit, the terminal receives the paging message of the access network device in the paging time unit of the access network device. In this way, the terminal can receive paging messages from the access network device and the core network device according to appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0336] like Figure 6 As shown, another communication method provided by the embodiment of the present application is provided. The communication method includes: S601-S603.

[0337] S601: The terminal obtains first parameter information and second parameter information, determines a first time domain position according to the first parameter information, and determines a second time domain position according to the second parameter information.

[0338] The terminal can be Figure 2A Any terminal in the communication system 20 shown, for example, terminal 203, terminal 204 or terminal 205. The first parameter information can be used to indicate a first eDRX parameter. The first eDRX parameter can be used for a core network device to send a paging message in eDRX mode, or the first eDRX parameter can be used for a terminal to receive a paging message from a core network device in eDRX mode. The first parameter information can be used to indicate a second eDRX parameter. The second eDRX parameter can be used for an access network device to send a paging message in eDRX mode, or the second eDRX parameter can be used for a terminal to receive a paging message from an access network device in eDRX mode. The first parameter information can also replace the eDRX parameter information described as an RRC-idle state, the eDRX parameter information configured by the core network device, etc., and the second parameter information can also replace the eDRX parameter information described as an RRC-inactive state, the eDRX parameter information configured by the access network device, etc., without limitation.

[0339] The access network device may be an access network device in the communication system 20 that is communicatively connected to the terminal. For example, if the terminal is the terminal 203 or the terminal 204 in the communication system 20, the access network device is the access network device 202 in the communication system 20; if the terminal is the terminal 205 in the communication system 20, the access network device is the access network device 202 in the communication system 20. The core network device may be a core network device in the communication system 20 that is communicatively connected to the access network device, for example, the core network device 206.

[0340] In a possible implementation, the first parameter information includes an eDRX cycle. Optionally, the first parameter information also includes a length of a PTW; or, the first parameter information also includes the number of DRX cycles included in the PTW. The second parameter information includes an eDRX cycle. Optionally, the second parameter information also includes a length of a PTW; or, the second parameter information also includes the number of DRX cycles included in the PTW.

[0341] The DRX cycle may be a default DRX cycle; or, the DRX cycle may be a UE specific DRX cycle; or, the DRX cycle may be a RAN DRX cycle; or, the DRX cycle may be a minimum or maximum value between a default DRX cycle and a UE specific DRX cycle; or, the DRX cycle may be a minimum or maximum value between a default DRX cycle and a RAN DRX cycle; or, the DRX cycle may be a minimum or maximum value between a default DRX cycle, a UE specific DRX cycle and a RAN DRX cycle. For example, Fig. 7A As shown, if within the first time unit, there are both a paging time unit of a core network device and a paging time unit of an access network device (e.g., PTW 701 and PTW 703), the DRX cycle may be a default DRX cycle, or a UE specific DRX cycle, or a RAN DRX cycle, or a minimum or maximum value among the default DRX cycle, the UE specific DRX cycle, and the RAN DRX cycle. If within the first time unit, there is a paging unit of a core network device (e.g., PTW 702), but no paging unit of an access network device exists, the DRX cycle may be a default DRX cycle, or a UE specific DRX cycle, or a minimum or maximum value among the default DRX cycle and the UE specific DRX cycle. If within the first time unit, there is a paging unit of an access network device (e.g., PTW 704), but no paging unit of a core network device exists, the DRX cycle may be a default DRX cycle, or a RAN DRX cycle, or a minimum or maximum value among the default DRX cycle and the RAN DRX cycle.

[0342] Among them, the first time unit is a logical unit in the time domain. The embodiment of the present application does not limit the length of the first time unit. For example, the first time unit may include one or more subframes, or one or more system frames, or one or more superframes, etc. The first time unit may also include any time length, for example, the first time unit may include 8s, 15s, etc., without limitation. The paging time unit may include PTW or PO. The introduction of the default DRX cycle, UE specific DRX cycle and RAN DRX cycle, as well as the introduction of the terminal obtaining the first parameter information, can refer to the corresponding description in the above S401, which will not be repeated here.

[0343] In a possible implementation, the terminal may obtain the second parameter information locally or from other devices. If the terminal obtains the second parameter information locally, the second parameter information may be pre-configured locally, for example, the second parameter information is specified in the protocol, or the second parameter information may be obtained by the terminal from other devices in advance and stored locally. For example, the second parameter information may be obtained by the terminal from an access network device in advance and stored locally. If the terminal obtains the second parameter information from other devices, the terminal may receive the second parameter information from the access network device. The second parameter information may be a message, or an element or a field contained in a message, without limitation. As an example, the second parameter information may be carried in an RRC release message.

[0344] In S601, the first time domain position includes the position of at least one paging time unit. Fig. 7A For example, the first time domain position includes the position of PTW 701 and the position of PTW 702. If the paging time unit includes at least one PTW, the eDRX cycle included in the first parameter information includes multiple POs; if the paging time unit includes at least one PO, the eDRX cycle included in the first parameter information includes one PO.

[0345] Similar to the first time domain position, the second time domain position includes the position of at least one paging time unit. Fig. 7A For example, the second time domain position includes the position of PTW 703, PTW 704 and PTW 705. If the paging time unit includes at least one PTW, the eDRX cycle included in the second parameter information includes multiple POs; if the paging time unit includes at least one PO, the eDRX cycle included in the second parameter information includes one PO.

[0346] Further, the first time domain position and the second time domain position are not completely the same. That is, the positions of all PTWs or all POs included in the first time domain position do not completely overlap in the time domain with the positions of all PTWs or all POs included in the second time domain position. The process of the terminal determining the first time domain position based on the first parameter information can refer to the above S401. The process of the terminal determining the second time domain position based on the second parameter information is similar to the process of the terminal determining the first time domain position based on the first parameter information, and can also refer to the corresponding description in the above S401, which will not be repeated here.

[0347] S602: The access network device obtains first parameter information, and determines a first time domain position according to the first parameter information.

[0348] The introduction of S602 may refer to the corresponding description of S401 above, which will not be elaborated here.

[0349] It should be noted that the embodiment of the present application does not limit the execution order of S601 and S602. That is, the embodiment of the present application can execute S601 first and then S602, or can execute S602 first and then S601.

[0350] S603: within the first time unit, the access network device sends a paging message to the terminal according to whether the core network device has a paging time unit. Correspondingly, the terminal receives a paging message from the access network device according to whether the core network device has a paging time unit.

[0351] Among them, within the first time unit, the first access network device has a paging time unit.

[0352] In a possible implementation, if the core network device has a paging time unit within the first time unit, a paging message is sent to the terminal in the paging time unit in which the access network device exists within the first time unit, or a paging message is sent to the terminal in the paging time unit in which the core network device exists within the first time unit; or, if the core network device does not have a paging time unit within the first time unit, a paging message is sent to the terminal in the paging time unit in which the first access network device exists within the first time unit. The following four cases are taken as examples for introduction.

[0353] Case A: The first time domain position includes the position of the first PTW. For example, the position of the first PTW may be Fig. 7A The second time domain position includes the position of the second PTW. For example, the position of the second PTW may be Fig. 7A in the position of PTW 703, the position of PTW 704 or the position of PTW 705.

[0354] A possible implementation method is that if the first PTW and the second PTW are located in the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the location of the first PTW. In this case, because the core network device also sends a paging message to the terminal at the location of the first PTW, the terminal can be awakened in one paging time unit within the first time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the second PTW is located in the first time unit, and there is no paging time unit for the core network device within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the location of the second PTW. If the first PTW is located in the first time unit, and there is no paging time unit for the access network device within the first time unit, then within the first time unit, the core network device sends a paging message to the terminal at the location of the first PTW.

[0355] It can be understood that if the position of the first PTW and the position of the second PTW are located in the first time unit, then within the first time unit, the access network device and the core network device can also send a paging message to the terminal at the position of the second PTW. In this case, before S603, the core network device can obtain the second parameter information and determine the second time domain position according to the second parameter information. Subsequently, within the first time unit, the core network device sends a paging message to the terminal according to whether the core network device has a paging time unit, and correspondingly, the terminal receives a paging message from the core network device according to whether the core network device has a paging time unit.

[0356] In a possible implementation, the core network device may obtain the second parameter information locally or from other devices. If the core network device obtains the second parameter information locally, the second parameter information may be pre-configured locally, for example, the second parameter information is specified in the protocol, or the second parameter information may be obtained by the core network device from other devices in advance and stored locally. For example, the second parameter information may be obtained by the core network device from the access network device in advance and stored locally. If the core network device obtains the second parameter information from other devices, the core network device may receive the second parameter information from the access network device. The second parameter information may be a message, or an information element or a field contained in the message, without limitation. As an example, the second parameter information may be carried in the N2 message. The process by which the core network device determines the second time domain position according to the second parameter information is similar to the process by which the terminal determines the first time domain position according to the first parameter information. The corresponding description in S401 above may be referred to and will not be repeated here. After the core network device determines the second time domain position according to the second parameter information, it can send a paging message to the terminal according to the first condition. Correspondingly, the terminal receives the paging message from the core network device according to the first condition.

[0357] For example, Fig. 7A For example, if the position of the first PTW is the position of PTW 701, and the position of the second PTW is the position of PTW 703, the access network device and the core network device can send a paging message to the terminal at the position of PTW 701, and the access network device and the core network device can also send a paging message to the terminal at the position of PTW 703. If the position of the first PTW is the position of PTW 702, and the position of the second PTW is the position of PTW 704, the core network device can send a paging message to the terminal at the position of PTW 702, and the access network device can send a paging message to the terminal at the position of PTW 704.

[0358] Case B: The first time domain position includes the position of the first PTW. For example, the position of the first PTW may be Figure 7B The second time domain position includes the position of the first PO. For example, the position of the first PO may be Figure 7B in the PO 708 position, the PO 709 position or the PO 710 position.

[0359] A possible implementation method is that if the position of the first PTW and the position of the first PO are located in the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW. In this case, because the core network device also sends a paging message to the terminal at the position of the first PTW, the terminal can be awakened in one paging time unit within the first time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the first PO is located in the first time unit, and there is no paging time unit for the core network device within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PO. If the position of the first PTW is located in the first time unit, and there is no paging time unit for the access network device within the first time unit, then within the first time unit, the core network device sends a paging message to the terminal at the position of the first PTW.

[0360] For example, Figure 7B For example, if the position of the first PTW is PTW 706 and the position of the first PO is PO 708, the access network device and the core network device can send a paging message to the terminal at PTW 706. If the position of the first PTW is PTW 707 and the position of the first PO is PO 709, the core network device can send a paging message to the terminal at PTW 707 and the access network device can send a paging message to the terminal at PO 709.

[0361] Case C: The first time domain position includes the position of the first PO. For example, the position of the first PO may be Figure 7C The second time domain position includes the position of the first PTW. For example, the position of the first PTW may be Figure 7C in the PTW 713 position, the PTW 714 position or the PTW 715 position.

[0362] A possible implementation method is that if the position of the first PO and the position of the first PTW are located in the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW, and the core network device also sends a paging message to the terminal at the position of the first PTW. In this case, both the access network device and the core network device send a paging message at the position of the first PTW. Therefore, within the first time unit, the terminal can be awakened in one paging time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the first PO is located in the first time unit, and there is no paging time unit for the access network device within the first time unit, then within the first time unit, the core network device sends a paging message to the terminal at the position of the first PO. If the position of the first PTW is located in the first time unit, and there is no paging time unit for the core network device within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW.

[0363] It can be understood that for situation C, before S603, the core network device can obtain the second parameter information and determine the second time domain position according to the second parameter information.

[0364] For example, Figure 7C For example, if the first PO is located at PO 711 and the first PTW is located at PTW 713, the access network device and the core network device can send a paging message to the terminal at PTW 713. If the first PO is located at PO 712 and the first PTW is located at PTW 714, the core network device can send a paging message to the terminal at PO 712 and the access network device can send a paging message to the terminal at PTW 714.

[0365] Case D: The first time domain position includes the position of the first PO. For example, the position of the first PO may be Fig.7D The second time domain position includes the position of the second PO. For example, the position of the second PO may be Fig.7D in the PO 718 position, the PO 719 position or the PO 720 position.

[0366] A possible implementation method is that if the position of the first PO and the position of the second PO are located in the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PO. In this case, the core network device also sends a paging message to the terminal at the position of the first PO, so the terminal can be awakened in a paging time unit within the first time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the second PO is located in the first time unit, and there is no paging time unit for the core network device within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the second PO. If the position of the first PO is located in the first time unit, and there is no paging time unit for the access network device within the first time unit, then within the first time unit, the core network device sends a paging message to the terminal at the position of the first PO.

[0367] It is understandable that if the position of the first PO and the position of the second PO are located in the first time unit, then within the first time unit, the access network device and the core network device may also send a paging message to the terminal at the position of the second PO. In this case, before S603, the core network device may obtain the second parameter information and determine the second time domain position according to the second parameter information.

[0368] For example, Fig.7D For example, if the first PO is located at PO 716 and the second PO is located at PO 718, the access network device and the core network device can send a paging message to the terminal at PO 716, and the access network device and the core network device can also send a paging message to the terminal at PO 718. If the first PO is located at PO 717 and the second PO is located at PO 719, the core network device can send a paging message to the terminal at PO 717, and the access network device can send a paging message to the terminal at PO 719.

[0369] Optionally, before S603, the access network device sends a second indication information to the terminal. The second indication information may indicate whether the terminal receives a paging message from the access network device according to whether a paging time unit exists in the core network device within the first time unit, or the first indication information may indicate whether the access network device sends a paging message to the terminal according to whether a paging time unit exists in the core network device within the first time unit. The first indication information may be carried in the RRCrelease message.

[0370] As an example, the first indication information includes 1 bit. If the value of the first indication information is 0, the first indication information indicates that within the first time unit, the terminal does not receive a paging message from the access network device according to whether the core network device has a paging time unit, or the first indication information indicates that within the first time unit, the access network device does not send a paging message to the terminal according to whether the core network device has a paging time unit. Subsequently, the access network device sends a paging message to the terminal at a second time domain position, and the terminal receives the paging message from the access network device at the second time domain position. The core network device sends a paging message to the terminal at the first time domain position, and the terminal receives the paging message from the core network device at the first time domain position. If the value of the first indication information is 1, the first indication information indicates that within the first time unit, the terminal receives a paging message from the access network device according to whether the core network device has a paging time unit, or the first indication information indicates that within the first time unit, the access network device sends a paging message to the terminal according to whether the core network device has a paging time unit. Subsequently, within the first time unit, the access network device sends a paging message to the terminal according to whether the core network device has a paging time unit, and the terminal receives the paging message from the access network device according to whether the core network device has a paging time unit.

[0371] based on Figure 6 According to the method shown, the core network device and the access network device can configure eDRX parameters respectively. The eDRX parameters configured by the core network device can be used by the terminal to receive paging messages from the core network device, and the eDRX parameters configured by the access network device can be used by the terminal to receive paging messages from the access network device, and if the paging time unit of the core network device and the paging time unit of the access network device exist at the same time in the first time unit, the terminal can be awakened in one of the paging time units. In this way, the terminal can receive paging messages from the access network device and the core network device according to the appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0372] The actions of the access network device, core network device or terminal in S601-S603 can be performed by Figure 3 The processor 301 in the communication device 30 shown calls the application code stored in the memory 303 for execution, and the embodiment of the present application does not impose any limitation on this.

[0373] Above Figure 6In the method shown, there is no correlation between the first parameter information and the second parameter information, and they are configured separately. In a specific application, the access network device can determine the second parameter information based on the first parameter information, so that the position of some paging time units included in the second time domain position overlaps with the position of some paging time units included in the first time domain position in the time domain. In this way, for the paging time units that overlap in the first time domain position and the second time domain position, the terminal can be awakened in one of the paging time units, so that the terminal receives paging messages from the access network device and the core network device according to appropriate eDRX parameters, which can reduce latency, improve user experience, and reduce power consumption of the terminal.

[0374] like Figure 8 As shown, another communication method provided in an embodiment of the present application includes S801-S802.

[0375] S801: The access network device and the terminal obtain first parameter information, and determine a first time domain position according to the first parameter information.

[0376] The introduction of S801 can refer to the corresponding description of S401 above, which is not repeated here. It should be noted that the access network device and the terminal may execute S801 simultaneously or not simultaneously.

[0377] S802: The access network device and the terminal obtain second parameter information, and determine a second time domain position according to the second parameter information.

[0378] In one possible implementation, the second parameter information is obtained based on the first parameter information. For example, the access network device may determine the second parameter information based on the first parameter information, so that the positions of some paging time units included in the second time domain position overlap with the positions of some paging time units included in the first time domain position in the time domain. For example, within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the access network device in the time domain. The first time unit may be a superframe. The paging time unit may include PTW or PO. In this way, for the paging time units that overlap in the first time domain position and the second time domain position, the terminal may be awakened in one of the paging time units to reduce power consumption. The second parameter information includes an eDRX cycle. Optionally, the second parameter information also includes the length of the PTW; or, the second parameter information also includes the number of DRX cycles included in the PTW. The introduction of the first time domain position and the second time domain position can refer to the above. Figure 6 As described in the method shown.

[0379] In a possible implementation, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the identifier of the terminal is an even number. The identifier of the terminal may be UE_ID_H. The number of superframes in the eDRX cycle included in the second parameter information is an even number. In this case, the second parameter information determined by the access network device may make the starting position of some paging time units included in the second time domain position the same as the starting position of some paging time units included in the first time domain position. For example, within the first time unit, the starting position of the paging time unit existing in the core network device is the same as the starting position of the paging time unit existing in the access network device.

[0380] In a possible implementation manner, after acquiring the second parameter information, the access network device may send the second parameter information to the terminal, so that the terminal may receive the paging message according to the second time domain position and the first time domain position.

[0381] In a possible implementation manner, after S802, the access network device sends a paging message according to the first time domain position and the second time domain position.

[0382] In a possible implementation, within the first time unit, a paging message is sent to the terminal in the paging time unit where the first access network device exists, or a paging message is sent to the terminal in the paging time unit where the core network device exists; or, outside the first time unit, a paging message is sent to the terminal in the paging time unit where the first access network device exists. The following four cases are taken as examples for introduction.

[0383] Case E: the first time domain position includes the position of the first PTW, and the second time domain position includes the position of the second PTW.

[0384] A possible implementation method is that if the position of the first PTW and the position of the second PTW are within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW. In this case, the core network device also sends a paging message to the terminal at the position of the first PTW, so the terminal can be awakened in one paging time unit within the first time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the first PTW is within the first time unit and the position of the second PTW is not within the first time unit, the core network device sends a paging message to the terminal at the position of the first PTW within the first time unit. If the position of the first PTW is not within the first time unit and the position of the second PTW is within the first time unit, the access network device sends a paging message to the terminal at the position of the second PTW within the first time unit.

[0385] It can be understood that if the position of the first PTW and the position of the second PTW are within the first time unit, within the first time unit, the access network device and the core network device can also send a paging message to the terminal at the position of the second PTW. In this case, the access network device also needs to send the second parameter information to the core network device. After the core network device receives the second parameter information, it can determine the second time domain position according to the second parameter information. In this way, the core network device can also send a paging message to the terminal according to the first time domain position and the second time domain position, and correspondingly, the terminal can receive the paging message from the core network device according to the first time domain position and the second time domain position.

[0386] For example, Fig. 9 As shown, the number of superframes in the eDRX cycle included in the first parameter information is 4, the number of superframes in the eDRX cycle included in the second parameter information is 2, the starting positions of PTW 901 and PTW 903 are the same, and the starting positions of PTW 902 and PTW 905 are the same. For PTW 901 and PTW 903, the core network device and the access network device can send a paging message to the terminal at the position of PTW 901, and the terminal receives the paging message from the core network device and the access network device at the position of PTW 901. The core network device and the access network device can also send a paging message to the terminal at the position of PTW 903. In this case, the terminal receives the paging message from the core network device and the access network device at the position of PTW 903. For PTW 902 and PTW 905, the core network device and the access network device can send a paging message to the terminal at the position of PTW 902, and the terminal receives the paging message from the core network device and the access network device at the position of PTW 902. The core network device and the access network device may also send a paging message to the terminal at the location of PTW 905. In this case, the terminal receives the paging message from the core network device and the access network device at the location of PTW 905. For PTW 904, the access network device may send a paging message to the terminal at the location of PTW 904, and the terminal receives the paging message from the access network device at the location of PTW 904. The core network device does not send a paging message to the terminal at the location of PTW 904.

[0387] In addition to the above examples, for PTW 901 and PTW 903, the core network device can also send a paging message at the position of PTW 901, and the access network device can also send a paging message at a time domain position overlapping with PTW 903 in PTW 901. The terminal receives the paging message of the core network device at the position of PTW 901, and receives the paging message of the access network device at the time domain position overlapping with PTW 903 in PTW 901. In other words, the terminal receives the paging message of the access network device and the paging message of the core network device at the time domain position overlapping with PTW 903 in PTW 901, and receives the paging message of the core network device at the time domain position not overlapping with PTW 903 in PTW 901. The situation of PTW 902 and PTW 905 is similar to that of PTW 901 and PTW 903, and will not be repeated here.

[0388] Case F: the first time domain position includes the position of the first PTW, and the second time domain position includes the position of the first PO.

[0389] A possible implementation method is that if the position of the first PTW and the position of the first PO are within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW. In this case, the core network device also sends a paging message to the terminal at the position of the first PTW, so the terminal can be awakened in one paging time unit within the first time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the first PO is within the first time unit, and there is no paging time unit for the core network device within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PO. If the position of the first PTW is within the first time unit, and there is no paging time unit for the access network device within the first time unit, then within the first time unit, the core network device sends a paging message to the terminal at the position of the first PTW.

[0390] Case G: The first time domain position includes the position of the first PO, and the second time domain position includes the position of the first PTW.

[0391] A possible implementation method is that if the position of the first PO and the position of the first PTW are within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW, and the core network device also sends a paging message to the terminal at the position of the first PTW. In this case, both the access network device and the core network device send a paging message at the position of the first PTW. Therefore, within the first time unit, the terminal can be awakened within a paging time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the first PTW is within the first time unit, and there is no paging time unit for the core network device within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PTW. If the position of the first PO is within the first time unit, and there is no paging time unit for the access network device within the first time unit, then within the first time unit, the core network device sends a paging message to the terminal at the position of the first PO.

[0392] It can be understood that, for situation G, the access network device may also send the second parameter information to the core network device. After receiving the second parameter information, the core network device may determine the second time domain position according to the second parameter information.

[0393] Case H: the first time domain position includes the position of the first PO, and the second time domain position includes the position of the second PO.

[0394] A possible implementation method is that if the position of the first PO and the position of the second PO are within the first time unit, then within the first time unit, the access network device sends a paging message to the terminal at the position of the first PO. In this case, the core network device also sends a paging message to the terminal at the position of the first PO, so the terminal can be awakened in a paging time unit within the first time unit to receive paging messages from the access network device and the core network device, thereby reducing the power consumption of the terminal. If the position of the first PO is within the first time unit, and there is no paging time unit for the access network device within the first time unit, the core network device sends a paging message to the terminal at the position of the first PO. If the position of the second PO is within the first time unit, and there is no paging time unit for the core network device within the first time unit, the access network device sends a paging message to the terminal at the position of the second PO.

[0395] It can be understood that if the position of the first PO and the position of the second PO are within the first time unit, within the first time unit, the access network device and the core network device can also send a paging message to the terminal at the position of the second PO. In this case, the access network device can also send the second parameter information to the core network device. After receiving the second parameter information, the core network device can determine the second time domain position according to the second parameter information.

[0396] based on Figure 8 According to the method shown, the access network device can determine the second parameter information based on the first parameter information, so that the position of some paging time units included in the second time domain position overlaps with the position of some paging time units included in the first time domain position in the time domain. In this way, for the paging time units that overlap in the first time domain position and the second time domain position, the terminal can be awakened in one of the paging time units, so that the terminal can receive the paging messages of the access network device and the core network device according to the appropriate eDRX parameters, and can also reduce the delay, improve the user experience, and reduce the power consumption of the terminal.

[0397] The actions of the access network device, core network device or terminal in the above S801-S802 can be performed by Figure 3 The processor 301 in the communication device 30 shown calls the application code stored in the memory 303 for execution, and the embodiment of the present application does not impose any limitation on this.

[0398] It is understandable that when a terminal moves from the coverage of one access network device to the coverage of another access network device in the RRC-inactive state, the other access network device cannot page the terminal because it does not know the eDRX parameters of the terminal receiving messages in eDRX mode. In order to solve this problem, an embodiment of the present application provides a communication method, in which an access network device can send an eDRX parameter to another access network device indicating that the terminal is within the coverage of the access network device and receives a paging message in eDRX mode, so that the other access network device can page the terminal according to the received eDRX parameters. Specifically, it can be as follows Fig.10 As shown, another communication method provided in an embodiment of the present application includes S1001-S1002.

[0399] S1001: A first access network device sends eDRX parameter information to a second access network device. Correspondingly, the second access network device receives the eDRX parameter information from the first access network device.

[0400] The first access network device and the second access network device may be Figure 2AThe access network device in the communication system 20 shown. For example, the first access network device is the access network device 201 in the communication system 20, and the second access network device is the access network device 202 in the communication system 20; or, the first access network device is the access network device 202 in the communication system 20, and the second access network device is the access network device 201 in the communication system 20. Further, the identifier of the second access device is included in the tracking area (TA) list of the first access network device. The TA list can indicate the access network devices that can receive the paging message of the first access network device. The first access network device is a device that is connected to the communication before the terminal enters the RRC-inactive state. The terminal can be a terminal in the communication system 20. If the first access network device is the access network device 201 in the communication system 20, the terminal is the terminal 203 or the terminal 204 in the communication system 20. If the first access network device is the access network device 202 in the communication system 20, the terminal is the terminal 205 in the communication system 20.

[0401] In a possible implementation manner, when the first access network device pages the terminal, the eDRX parameter information is sent to the second access network device.

[0402] It can be understood that in the scenario where the terminal receives paging messages from the core network device and the access network device according to the same eDRX parameters, and in the scenario where the terminal receives paging messages from the core network device and the access network device according to different eDRX parameters, the content included in the eDRX parameter information is different.

[0403] As an example, in a scenario where the terminal receives paging messages from a core network device and an access network device according to the same eDRX parameter, that is, for the above Figure 4-Figure 5 In the method shown, the parameter information of eDRX includes the first parameter information or the second parameter information. For example, if the terminal moves into the coverage of the second access network device before S402 or S503, the parameter information of eDRX includes the first parameter information; if the terminal moves into the coverage of the second access network device after S402 or S503, the parameter information of eDRX includes the second parameter information. The parameter information of eDRX also includes the RAN DRX cycle configured by the first access network device. Optionally, the parameter information of eDRX also includes the UE specific DRX cycle.

[0404] As another example, in a scenario where the terminal receives paging messages from a core network device and an access network device according to different eDRX parameters, that is, for the above Figure 6 or Figure 8In the method shown, the eDRX parameter information includes first parameter information and second parameter information. The eDRX parameter information also includes a RAN DRX cycle configured by the first access network device. Optionally, the eDRX parameter information also includes a UE specific DRX cycle.

[0405] In a possible implementation, the parameter information of eDRX can be a message, or a cell or a field contained in the message, without limitation. As an example, the parameter information of eDRX can be carried in a paging message (RAN paging message) of an access network device. It can be understood that the paging message may include other information in addition to the parameter information of eDRX. For example, the paging message may also include at least one of the following: UE Identity Index Value, UE's radio access network (RAN) paging identity (UE RAN Paging Identity), paging DRX (Paging DRX), RAN paging area (RAN Paging Area), paging priority (Paging Priority), RAN paging assistance data (Assistance Data for RAN Paging), UE paging radio capability (UE Radio Capability for Paging). Among them, the introduction of UE Identity Index Value, UE RAN Paging Identity, Paging DRX, RAN Paging Area, Paging Priority, Assistance Data for RAN Paging and UE Radio Capability for Paging can be referred to the explanation of existing standards and will not be repeated here.

[0406] S1002: The second access network device sends a paging message to the terminal according to the eDRX parameter information. Correspondingly, the terminal receives the paging message from the second access network device according to the eDRX parameter information.

[0407] In a possible implementation, if the eDRX parameter information includes first parameter information, the second access network device determines the first time domain position according to the first parameter information, and sends a paging message to the terminal at the first time domain position. If the eDRX parameter information includes second parameter information, the second access network device determines the second time domain position according to the second parameter information, and sends a paging message to the terminal at the second time domain position. If the eDRX parameter information includes first parameter information and second parameter information, the second access network device determines the second time domain position according to the second parameter information, and sends a paging message to the terminal at the second time domain position. Figure 6 or Figure 8 The method shown sends a paging message to a terminal.

[0408] It should be noted that Fig.10 The method shown can also be used with Figure 4 The method shown, Figure 5 The method shown, Figure 6 The method shown or Figure 8 Combine the methods shown. For example, Fig.10 The method shown may be executed after S402, or before S502, or after S602, or after S802, without limitation.

[0409] based on Fig.10 According to the method shown, the first access network device can send eDRX parameters to the second access network device, indicating that the terminal is within the coverage of the first access network device and receives the paging message in eDRX mode, so that the second access device can page the terminal according to the received eDRX parameters.

[0410] The actions of the first access network device or the second access network device or the terminal in the above S1001-S1002 can be performed by Figure 3 The processor 301 in the communication device 30 shown calls the application code stored in the memory 303 for execution, and the embodiment of the present application does not impose any limitation on this.

[0411] Understandably, the above Figure 4 The method shown, Figure 5 The method shown, Figure 6 The method shown or Figure 8 The access network device in the method shown may be a CU-DU separated architecture. In this case, the CU may send an eDRX parameter for the terminal to receive a paging message in an eDRX mode to the DU, so that the DU may page the terminal according to the eDRX parameter.

[0412] like Fig.11 As shown, another communication method provided in an embodiment of the present application includes S1101-S1102.

[0413] S1101: The CU sends eDRX parameter information to the DU. Correspondingly, the DU receives the eDRX parameter information from the CU.

[0414] Among them, CU can be Figure 2B CU 2011, DU can be Figure 2B DU 2012 or DU 2013.

[0415] It can be understood that in the scenario where the terminal receives paging messages from the core network device and the access network device according to the same eDRX parameters, and in the scenario where the terminal receives paging messages from the core network device and the access network device according to different eDRX parameters, the content included in the eDRX parameter information is different.

[0416] As an example, in a scenario where the terminal receives paging messages from a core network device and an access network device according to the same eDRX parameter, that is, for the above Figure 4-Figure 5 In the method shown, the parameter information of eDRX includes the first parameter information or the second parameter information. For example, S1101 is executed before S402 or S503, and the parameter information of eDRX includes the first parameter information; S1101 is executed after S402 or S503, and the parameter information of eDRX includes the second parameter information. The parameter information of eDRX also includes the RAN DRX cycle and the UE specific DRX cycle.

[0417] As another example, in a scenario where the terminal receives paging messages from a core network device and an access network device according to different eDRX parameters, that is, for the above Figure 6 or Figure 8 In the method shown, the parameter information of eDRX includes first parameter information and second parameter information. The parameter information of eDRX also includes RAN DRX cycle and UE specific DRX cycle.

[0418] In a possible implementation, the parameter information of eDRX can be a message, or a cell or a field contained in the message, without limitation. As an example, the parameter information of eDRX can be carried in a paging message. It can be understood that the paging message may include other information in addition to the parameter information of eDRX. For example, the paging message may also include at least one of the following: UE Identity Index Value, Paging Identity, Paging DRX, Paging Priority, Paging Cell List, Paging Origin. The introduction of UE Identity Index Value, Paging Identity, Paging DRX, Paging Priority, Paging Cell List and Paging Origin can refer to the explanation of the existing standards and will not be repeated here.

[0419] S1002: The DU sends a paging message to the terminal according to the eDRX parameter information. Correspondingly, the terminal receives a paging message from the DU according to the eDRX parameter information.

[0420] In a possible implementation, if the eDRX parameter information includes first parameter information, the DU determines a first time domain position according to the first parameter information, and sends a paging message to the terminal at the first time domain position. If the eDRX parameter information includes second parameter information, the DU determines a second time domain position according to the second parameter information, and sends a paging message to the terminal at the second time domain position. If the eDRX parameter information includes first parameter information and second parameter information, the DU determines a second time domain position according to the second parameter information, and sends a paging message to the terminal at the second time domain position. Figure 6 or Figure 8 The method shown sends a paging message to a terminal.

[0421] based on Fig.11 In the method shown, under the CU-DU separation architecture, the CU can send the eDRX parameters for the terminal to receive the paging message in the eDRX mode to the DU, so that the DU can page the terminal according to the eDRX parameters.

[0422] The actions of the CU, DU or terminal in the above S1101-S1102 can be Figure 3 The processor 301 in the communication device 30 shown calls the application code stored in the memory 303 for execution, and the embodiment of the present application does not impose any limitation on this.

[0423] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between various network elements. It can be understood that in order to realize the above functions, the above-mentioned access network equipment, terminal or core network equipment, etc., include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm operations of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware 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 exceed the scope of this application.

[0424] The embodiment of the present application can divide the functional modules of the access network device, terminal or core network device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0425] For example, when the functional modules are divided in an integrated manner, Fig.12 A schematic diagram of the structure of a communication device is shown. The communication device may include a processing module 1201 and a transceiver module 1202.

[0426] In a possible implementation, the communication device may be an access network device or a chip or system on chip in the access network device, or other combined devices, components, etc. that can implement the functions of the above-mentioned access network device. The communication device may be used to perform the above-mentioned Figure 4 The functions of the access network devices involved in the embodiments shown in the figure, as well as the above Fig.10 The functions of the first access network device involved in the illustrated embodiment.

[0427] When the communication device is an access network device, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the functions of the above-mentioned access network device, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0428] The processing module 1201 is used to obtain first parameter information, where the first parameter information is used to indicate an extended discontinuous reception eDRX parameter, where the eDRX parameter is used by the communication device to send a paging message in the eDRX mode. Figure 4 , the processing module 1201 can be used to execute S401.

[0429] The transceiver module 1202 is used to send the second parameter information to the core network device, the second parameter information is used to indicate the changed eDRX parameter, and the changed eDRX parameter is used for the communication device to send the paging message in the eDRX mode after sending the second parameter information. Figure 4 The transceiver module 1202 may be configured to execute S402.

[0430] In a possible implementation, the transceiver module 1202 is specifically configured to send the second parameter information to the core network device when determining that the terminal enters the radio resource control inactive RRC-inactive state.

[0431] In a possible implementation method, the processing module 1201 is also used to determine whether to send second parameter information to the core network device based on the terminal capability information and / or the first condition information; wherein the terminal capability information is used to indicate at least one of the following information: whether the terminal supports eDRX, whether the terminal supports the RRC-inactive state, and whether the terminal supports eDRX in the RRC-inactive state; the first condition information is used to indicate whether the eDRX cycle included in the first parameter information is greater than or equal to the first time length.

[0432] In a possible implementation manner, the second parameter information is carried in an RRC inactive conversion report.

[0433] In a possible implementation, the processing module 1201 is specifically used to receive first parameter information from a core network device, where the first parameter information is carried in an initial context establishment request message or in core network auxiliary information in an RRC-inactive state.

[0434] In a possible implementation manner, the transceiver module 1202 is further configured to send second parameter information to the terminal.

[0435] In a possible implementation manner, the transceiver module 1202 is configured to send the second parameter information to the terminal via an RRC release message or an RRC connection reconfiguration message.

[0436] In a possible implementation manner, the transceiver module 1202 is further configured to send first eDRX parameter information to the second access network device, where the first eDRX parameter information includes first parameter information or second parameter information.

[0437] In a possible implementation manner, the parameter information of the first eDRX also includes a DRX cycle of an access network device configured by the communication apparatus and at least one of a terminal-specific DRX cycle.

[0438] In a possible implementation manner, the transceiver module 1202 is further configured to send the first eDRX parameter information to the access network device in the tracking area list of the communication device, and the identifier of the second access network device is included in the tracking area list of the communication device.

[0439] In a possible implementation manner, the first eDRX parameter information is carried in a paging message of the access network device.

[0440] In a possible implementation, the communication device may be a terminal or a chip or system on chip in the terminal, or other combined devices, components, etc. that can realize the above terminal functions. The communication device may be used to perform the above Figure 4 The functions of the terminal involved in the illustrated embodiment.

[0441] When the communication device is a terminal, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the above-mentioned terminal function, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0442] The processing module 1201 is used to obtain first parameter information, where the first parameter information is used to indicate an extended discontinuous reception eDRX parameter, and the eDRX parameter is used for the communication device to receive a paging message in an eDRX mode.

[0443] The transceiver module 1202 is used to receive second parameter information from the first access network device, where the second parameter information is used to indicate the changed eDRX parameter. The changed eDRX parameter is used by the communication device to receive the paging message in the eDRX mode after receiving the second parameter information.

[0444] In a possible implementation manner, the transceiver module 1202 is further configured to receive second parameter information from the first access network device when entering the radio resource control inactive RRC-inactive state.

[0445] In a possible implementation manner, the second parameter information is carried in an RRC release message or an RRC connection reconfiguration message.

[0446] In a possible implementation manner, the processing module 1201 is specifically configured to receive first parameter information from a core network device, where the first parameter information is carried in a non-access layer NAS message.

[0447] In a possible implementation, the communication device may be a terminal or a chip or system on chip in the terminal, or other combined devices, components, etc. that can realize the above terminal functions. The communication device may be used to perform the above Figure 5 The functions of the terminal involved in the illustrated embodiment.

[0448] When the communication device is a terminal, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the above-mentioned terminal function, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0449] The processing module 1201 is used to obtain first parameter information, where the first parameter information is used to indicate a second extended discontinuous reception eDRX parameter, and the second eDRX parameter is used for the communication device to receive a paging message in an eDRX mode.

[0450] The transceiver module 1202 is used to receive first indication information from a first access network device or a core network device, where the first indication information is used to indicate a first eDRX parameter.

[0451] The transceiver module 1202 is further configured to receive a paging message using the first eDRX parameter.

[0452] In a possible implementation method, the transceiver module 1202 is also used to receive the first indication information from the first access network device through an RRC release message or an RRC connection reconfiguration message; the transceiver module 1202 is also used to receive the first indication information from the core network device through a non-access layer NAS message.

[0453] In a possible implementation manner, the processing module 1201 is specifically configured to receive first parameter information from a core network device, where the first parameter information is carried in a NAS message.

[0454] In a possible implementation, the communication device may be an access network device or a chip or system on chip in the access network device, or other combined devices, components, etc. that can implement the functions of the above-mentioned access network device. The communication device may be used to perform the above-mentioned Figure 6 The functions of the access network devices involved in the embodiments shown in the figure, as well as the above Fig.10 The functions of the first access network device involved in the illustrated embodiment.

[0455] When the communication device is an access network device, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the functions of the above-mentioned access network device, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0456] Among them, the processing module 1201 is used to obtain the first parameter information, determine the first time domain position according to the first parameter information, the first parameter information is used to indicate the first extended discontinuous reception eDRX parameter, the first eDRX parameter is used for the core network device to send a paging message in eDRX mode, and the first time domain position includes the position of at least one paging time unit.

[0457] The transceiver module 1202 is used to send a paging message to the terminal within a first time unit according to whether a paging time unit exists in the core network device. Within the first time unit, the communication device has a paging time unit.

[0458] In one possible implementation, the processing module 1201 is also used to determine a second time domain position based on second parameter information, where the second parameter information is used to indicate a second eDRX parameter, and the second eDRX parameter is used by the communication device to send a paging message in eDRX mode, and the second time domain position includes the position of at least one paging time unit.

[0459] In a possible implementation, the second parameter information is obtained based on the first parameter information, and within the first time unit, the paging time unit existing in the core network device and the paging time unit existing in the communication device overlap in the time domain.

[0460] In a possible implementation manner, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the identifier of the terminal is an even number.

[0461] In a possible implementation manner, the number of superframes in the eDRX cycle included in the second parameter information is an even number.

[0462] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0463] A possible implementation method is that the transceiver module 1202 is specifically used to send a paging message to the terminal in the paging time unit where the communication device exists within the first time unit if a paging time unit exists in the core network device within the first time unit, or send a paging message to the terminal in the paging time unit where the core network device exists within the first time unit; or, the transceiver module 1202 is specifically used to send a paging message to the terminal in the paging time unit where the communication device exists within the first time unit if a paging time unit does not exist in the core network device within the first time unit.

[0464] A possible implementation method is that if there is a paging time unit in the core network device within the first time unit, the discontinuous reception DRX cycle of the communication device sending the paging message is the default DRX cycle; or, the DRX cycle of the communication device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the communication device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the communication device sending the paging message is the minimum or maximum value of the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; or, if there is no paging time unit in the core network device within the first time unit, the DRX cycle of the communication device sending the paging message is the default DRX cycle; or, the DRX cycle of the communication device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the communication device sending the paging message is the minimum or maximum value of the default DRX cycle and the DRX cycle of the access network device.

[0465] In a possible implementation, the processing module 1201 is specifically used to receive first parameter information from a core network device, where the first parameter information is carried in an initial context establishment request message or in core network auxiliary information in an RRC-inactive state.

[0466] In a possible implementation manner, the first time unit is a superframe.

[0467] In a possible implementation manner, the transceiver module 1202 is further configured to send first eDRX parameter information to the second access network device, where the first eDRX parameter information includes first parameter information and second parameter information.

[0468] In a possible implementation manner, the parameter information of the first eDRX also includes a DRX cycle of an access network device configured by the communication apparatus and at least one of a terminal-specific DRX cycle.

[0469] In a possible implementation manner, the identifier of the second access network device is included in a tracking area list of the communication apparatus.

[0470] In a possible implementation manner, the first eDRX parameter information is carried in a paging message of the access network device.

[0471] In a possible implementation, the communication device may be a terminal or a chip or system on chip in the terminal, or other combined devices, components, etc. that can realize the above terminal functions. The communication device may be used to perform the above Figure 6 The functions of the terminal involved in the illustrated embodiment.

[0472] When the communication device is a terminal, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the above-mentioned terminal function, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0473] Among them, the processing module 1201 is used to obtain first parameter information and second parameter information, the first parameter information is used to indicate a first extended discontinuous reception eDRX parameter, the first eDRX parameter is used for the terminal to adopt the eDRX mode to receive a paging message from the core network device, and the second parameter information is used to indicate a second eDRX parameter, and the second eDRX parameter is used for the terminal to adopt the eDRX mode to receive a paging message from the first access network device.

[0474] The processing module 1201 is also used to determine a first time domain position according to the first parameter information, and determine a second time domain position according to the second parameter information, wherein the first time domain position includes the position of at least one paging time unit, and the second time domain position includes the position of at least one paging time unit.

[0475] The transceiver module 1202 is used to receive a paging message from the first access network device and a paging message of the core network device within the first time unit according to whether the core network device has a paging time unit. Within the first time unit, the first access network device has a paging time unit.

[0476] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0477] In a possible implementation manner, the second parameter information is obtained according to the first parameter information, and within the first time unit, the paging time unit existing in the core network device overlaps with the paging time unit existing in the first access network device in the time domain.

[0478] In a possible implementation manner, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the identifier of the terminal is an even number.

[0479] In a possible implementation manner, the number of superframes in the eDRX cycle included in the second parameter information is an even number.

[0480] A possible implementation method is that the transceiver module 1202 is specifically used to, if there is a paging time unit for the core network device within the first time unit, then receive the paging message from the first access network device and the paging message from the core network device in the paging time unit where the first access network device exists within the first time unit, or, within the first time unit, receive the paging message from the first access network device and the paging message from the core network device in the paging time unit where the core network device exists; or, the transceiver module 1202 is specifically used to, if there is no paging time unit for the core network device within the first time unit, then receive the paging message from the core network device in the paging time unit where the core network device exists within the first time unit, and receive the paging message from the first access network device in the paging time unit where the first access network device exists within the first time unit.

[0481] A possible implementation method is that if a paging time unit exists in the core network device within the first time unit, the discontinuous reception DRX cycle of the terminal receiving the paging message is the default DRX cycle; or, the DRX cycle of the terminal receiving the paging message is a terminal-specific DRX cycle; or, the DRX cycle of the terminal receiving the paging message is the DRX cycle of the access network device; or, the DRX cycle of the terminal receiving the paging message is the default DRX cycle, the minimum or maximum value of the terminal-specific DRX cycle and the DRX cycle of the access network device; or, if a paging time unit does not exist in the core network device within the first time unit, the DRX cycle of the terminal receiving the paging message of the core network device is the default DRX cycle; or Alternatively, the DRX cycle at which the terminal receives the paging message from the core network device is a terminal-specific DRX cycle; or, the DRX cycle at which the terminal receives the paging message from the core network device is the minimum or maximum value between the default DRX cycle and the terminal-specific DRX cycle; or, if within the first time unit, there is no paging time unit for the core network device, the DRX cycle at which the terminal receives the paging message from the first access network device is the default DRX cycle; or, the DRX cycle at which the terminal receives the paging message from the first access network device is the DRX cycle of the access network device; or, the DRX cycle at which the terminal receives the paging message from the first access network device is the minimum or maximum value between the default DRX cycle and the DRX cycle of the access network device.

[0482] In a possible implementation manner, the processing module 1201 is specifically configured to receive first parameter information from a core network device, where the first parameter information is carried in a non-access layer NAS message.

[0483] In a possible implementation manner, the processing module 1201 is specifically configured to receive second parameter information from the first access network device, where the second parameter information is carried in an RRC release message or an RRC connection reconfiguration message.

[0484] In a possible implementation, the communication device may be a core network device or a chip or system on chip in the core network device, or other combined devices, components, etc. that can implement the functions of the above core network device. The communication device may be used to perform the above Figure 6 The functions of the core network devices involved in the illustrated embodiment.

[0485] When the communication device is a core network device, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the functions of the above-mentioned core network device, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0486] Among them, the processing module 1201 is used to obtain second parameter information, determine the second time domain position according to the second parameter information, the second parameter information is used to indicate the second extended discontinuous reception eDRX parameter, the second eDRX parameter is used for the first access network device to send a paging message using the eDRX mode, and the second time domain position includes the position of at least one paging time unit.

[0487] The transceiver module 1202 is used to send a paging message to the terminal within a first time unit according to whether the communication device has a paging time unit. Within the first time unit, the first access network device has a paging time unit.

[0488] In one possible implementation, the processing module 1201 is also used to determine a first time domain position based on first parameter information, where the first parameter information is used to indicate a first eDRX parameter, where the first eDRX parameter is used by the communication device to send a paging message in eDRX mode, and the first time domain position includes the position of at least one paging time unit.

[0489] In a possible implementation manner, the second parameter information is acquired according to the first parameter information, and within the first time unit, a paging time unit existing in the communication device overlaps with a paging time unit existing in the first access network device in the time domain.

[0490] In a possible implementation manner, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the identifier of the terminal is an even number.

[0491] In a possible implementation manner, the number of superframes in the eDRX cycle included in the second parameter information is an even number.

[0492] In a possible implementation, the paging time unit includes a paging time window PTW or a paging occasion PO.

[0493] A possible implementation method is that the transceiver module 1202 is specifically used to send a paging message to the terminal in the paging time unit where the first access network device exists within the first time unit if the communication device has a paging time unit within the first time unit, or to send a paging message to the terminal in the paging time unit where the communication device exists within the first time unit; or, the transceiver module 1202 is specifically used to send a paging message to the terminal in the paging time unit where the communication device exists within the first time unit if the communication device does not have a paging time unit within the first time unit.

[0494] A possible implementation method is that if a paging time unit exists in the communication device within the first time unit, the discontinuous reception DRX cycle of the communication device sending the paging message is the default DRX cycle; or, the DRX cycle of the communication device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the communication device sending the paging message is the DRX cycle of the access network device; or, the DRX cycle of the communication device sending the paging message is the minimum or maximum value among the default DRX cycle, the terminal-specific DRX cycle and the DRX cycle of the access network device; or, if a paging time unit does not exist in the communication device within the first time unit, the discontinuous reception DRX cycle of the communication device sending the paging message is the default DRX cycle; or, the DRX cycle of the communication device sending the paging message is the terminal-specific DRX cycle; or, the DRX cycle of the communication device sending the paging message is the minimum or maximum value among the default DRX cycle and the terminal-specific DRX cycle.

[0495] In a possible implementation manner, the processing module 1201 is specifically configured to receive second parameter information from the first access network device, where the second parameter information is carried in an RRC inactive conversion report.

[0496] In a possible implementation, the communication device may be an access network device or a chip or system on chip in the access network device, or other combined devices, components, etc. that can implement the functions of the above-mentioned access network device. The communication device may be used to perform the above-mentioned Figure 8 The functions of the access network devices involved in the embodiments shown in the figure, as well as the above Fig.10The functions of the first access network device involved in the illustrated embodiment.

[0497] When the communication device is an access network device, the processing module 1201 may be a processor, such as a baseband chip, etc., and the transceiver module 1202 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the communication device is a component having the functions of the above-mentioned access network device, the processing module 1201 may be a processor, and the transceiver module 1202 may be a radio frequency unit. When the communication device is a chip system, the processing module 1201 may be a processor of the chip system, such as a CPU, and the transceiver module 1202 may be an input and output interface of the chip system.

[0498] Among them, the processing module 1201 is used to obtain the first parameter information, determine the first time domain position according to the first parameter information, the first parameter information is used to indicate the first extended discontinuous reception eDRX parameter, the first eDRX parameter is used for the core network device to send a paging message in eDRX mode, and the first time domain position includes the position of at least one paging time unit.

[0499] The processing module 1201 is also used to obtain second parameter information, determine the second time domain configuration according to the second parameter information, the second parameter information is obtained according to the first parameter information, the second parameter information is used to indicate a second eDRX parameter, the second eDRX parameter is used for the communication device to send a paging message in eDRX mode, and the second time domain position includes the position of at least one paging time unit.

[0500] The transceiver module 1202 is configured to send a paging message according to a first time domain position and a second time domain position.

[0501] In a possible implementation, within the first time unit, a paging time unit existing in the core network device and a paging time unit existing in the communication device overlap in the time domain.

[0502] In a possible implementation manner, the number of superframes in the eDRX cycle included in the first parameter information is an even number, and the identifier of the terminal is an even number.

[0503] In a possible implementation manner, the number of superframes in the eDRX cycle included in the second parameter information is an even number.

[0504] A possible implementation method is that the transceiver module 1202 is specifically used to send a paging message to the terminal in a paging time unit where the communication device exists within the first time unit, or to send a paging message to the terminal in a paging time unit where the core network device exists; or, the transceiver module 1202 is specifically used to send a paging message to the terminal in a paging time unit where the communication device exists outside the first time unit.

[0505] A possible implementation method is that within the first time unit, the discontinuous reception DRX cycle of the communication device sending the paging message is the de...

Claims

1. A communication method, applied to a first access network device, characterized in that: The method comprises: Acquire first parameter information, where the first parameter information is used to indicate an extended discontinuous reception eDRX parameter, where the eDRX parameter is used by the first access network device to send a paging message in an eDRX mode; Sending second parameter information to the core network device, where the second parameter information is used to indicate a changed eDRX parameter, and the changed eDRX parameter is used for the first access network device and the core network device to send a paging message in an eDRX mode after the first access network device sends the second parameter information; The first access network device adopts the eDRX mode to send a paging message, including: when the terminal is in a radio resource control inactive RRC-inactive state, sending a paging message to the terminal according to the second parameter information; The core network device sends a paging message in an eDRX mode, including: when the terminal is in a radio resource control idle RRC-idle state, sending a paging message to the terminal according to the second parameter information.

2. The method according to claim 1, characterized in that When it is determined that the terminal enters the RRC-inactive state, the second parameter information is sent to the core network device.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: Determine whether to send the second parameter information to the core network device according to the terminal capability information and / or the first condition information; Among them, the terminal capability information is used to indicate at least one of the following information: whether the terminal supports eDRX, whether the terminal supports the RRC-inactive state, and whether the terminal supports eDRX in the RRC-inactive state; the first condition information is used to indicate whether the eDRX cycle included in the first parameter information is greater than or equal to the first time length.

4. The method according to claim 1 or 2, characterized in that: The second parameter information is carried in the RRC inactive conversion report.

5. The method according to claim 1 or 2, characterized in that: Get the first parameter information, including: The first parameter information is received from the core network device, where the first parameter information is carried in an initial context establishment request message or in core network auxiliary information in an RRC-inactive state.

6. The method according to claim 1 or 2, characterized in that: The method further comprises: Send the second parameter information to the terminal.

7. The method according to claim 6, characterized in that The second parameter information is sent to the terminal through an RRC release message or an RRC connection reconfiguration message.

8. The method according to claim 1 or 2, characterized in that: The method further comprises: Sending first eDRX parameter information to the second access network device, where the first eDRX parameter information includes the first parameter information or the second parameter information.

9. The method according to claim 8, characterized in that The parameter information of the first eDRX also includes a DRX cycle of the access network device configured by the first access network device and at least one of a terminal-specific DRX cycle.

10. The method according to claim 8, characterized in that The first eDRX parameter information is sent to the access network device in the tracking area list of the first access network device, and the identifier of the second access network device is included in the tracking area list of the first access network device.

11. The method according to claim 10, characterized in that The first eDRX parameter information is carried in a paging message of the access network device.

12. The method according to any one of claims 1, 2, 9, 10 or 11, characterized in that The first access network device includes a centralized unit and a distributed unit. The first access network device acquires the first parameter information, including: the centralized unit acquires the first parameter information. The method further includes: The centralized unit sends second eDRX parameter information to the distributed unit, where the second eDRX parameter information includes the first parameter information or the second parameter information.

13. The method according to claim 12, characterized in that The parameter information of the second eDRX also includes the DRX cycle of the access network device configured by the centralized unit and the terminal-specific DRX cycle.

14. The method according to claim 12, characterized in that The parameter information of the second eDRX is carried in the paging message.

15. A communication method, applied to a terminal, characterized in that: The method comprises: Acquire first parameter information, where the first parameter information is used to indicate an extended discontinuous reception eDRX parameter, where the eDRX parameter is used by the terminal to receive a paging message in an eDRX mode; receiving second parameter information from the first access network device, where the second parameter information is used to indicate a changed eDRX parameter, and the changed eDRX parameter is used by the terminal to receive a paging message in an eDRX mode after receiving the second parameter information; Receiving paging messages in eDRX mode includes: When the terminal is in a radio resource control inactive RRC-inactive state, receiving a paging message from the first access network device according to the second parameter information; When the terminal is in a radio resource control idle RRC-idle state, a paging message from a core network device is received according to the second parameter information.

16. The method according to claim 15, characterized in that When entering the RRC-inactive state, receiving the second parameter information from the first access network device.

17. The method according to claim 15 or 16, characterized in that The second parameter information is carried in an RRC release message or an RRC connection reconfiguration message.

18. The method according to claim 15 or 16, characterized in that Get the first parameter information, including: The first parameter information is received from the core network device, where the first parameter information is carried in a non-access layer NAS message.

19. A communication method, applied to a core network device, characterized in that: The method comprises: Sending first parameter information to the first access network device, where the first parameter information is used to indicate an extended discontinuous reception eDRX parameter, where the eDRX parameter is used by the core network device to send a paging message in the eDRX mode; receiving second parameter information from the first access network device, where the second parameter information is used to indicate a changed eDRX parameter, where the changed eDRX parameter is used for the first access network device and the core network device to send a paging message in an eDRX mode after the core network device receives the second parameter information; The first access network device adopts the eDRX mode to send a paging message, including: when the terminal is in a radio resource control inactive RRC-inactive state, sending a paging message to the terminal according to the second parameter information; The core network device sends a paging message in an eDRX mode, including: when the terminal is in a radio resource control idle RRC-idle state, sending a paging message to the terminal according to the second parameter information.

20. The method according to claim 19, characterized in that When the terminal enters the RRC-inactive state, the terminal receives the second parameter information from the first access network device.

21. The method according to claim 19 or 20, characterized in that The second parameter information is carried in the RRC inactive conversion report.

22. The method according to claim 19 or 20, characterized in that The first parameter information is carried in an initial context establishment request message, or carried in core network auxiliary information in an RRC-inactive state.

23. The method according to claim 19 or 20, characterized in that The method further comprises: Send the second parameter information to the terminal.

24. The method according to claim 19 or 20, characterized in that The method further comprises: The first parameter information is sent to the terminal, where the first parameter information is carried in a non-access layer NAS message.

25. A first access network device, characterized in that: include: A processor and a communication interface, wherein the communication interface is used for communicating with the first access network device, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the first access network device executes the method described in any one of claims 1-14.

26. A terminal, characterized in that: include: A processor and a communication interface, wherein the communication interface is used for the terminal to communicate, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the terminal executes the method according to any one of claims 15 to 18.

27. A core network device, characterized in that: include: A processor and a communication interface, wherein the communication interface is used for communicating with the core network, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the program or instructions are executed by the processor, the core network device executes the method described in any one of claims 19-24.

28. A computer readable 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 14, or the method according to any one of claims 15 to 18, or the method according to any one of claims 19 to 24.

Images