A paging method, device and system

Abstract

This application discloses a paging method, device, and system. In the paging method, an access network device configures a first parameter for a terminal device. This first parameter is used to adjust the paging time window (PTW) parameter and / or extend the discontinuous reception (eDRX) period of the terminal device. Then, the access network device sends a paging message to the terminal device according to the first parameter, enabling the terminal device to listen for paging downlink control information and receive the paging message based on the aforementioned first parameter. Since the access network device can configure the first parameter for the terminal device, the first parameter can adjust the duration of the PTW or the length of the eDRX period. Therefore, the access network device can flexibly control the duration and timing of the paging process, thereby improving the flexibility of the paging process between the terminal device and the access network device.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a paging method, device, and system. Background Technology

[0002] The paging process refers to the process where an access network device sends a paging message to a terminal device at a specific time to notify the terminal device to perform corresponding operations or update relevant parameters. During this process, terminal devices configured with extended discontinuous reception (eDRX) or a paging time window (PTW) attempt to receive the paging message from the access network device within the PTW and determine whether the current system information has changed by decoding the paging message. If the terminal device detects a change in system information, it will modify the period boundary and reacquire the system information on the next broadcast control channel (BCCH).

[0003] In the aforementioned paging process, the PTW (Paging Message Warranty) of the terminal device is configured by the core network equipment. Once the PTW is configured, the terminal device needs to listen for paging messages from the access network equipment within that PTW. Therefore, the location, duration, and timing of the terminal device's attempt to receive paging messages are relatively fixed. This affects the flexibility of the terminal device in receiving access network paging messages (RAN-paging) and is detrimental to the balance between energy saving, reliability, and latency. Summary of the Invention

[0004] This application provides a paging method, device, and system to improve the flexibility of signaling interaction between access network devices and terminal devices.

[0005] In a first aspect, embodiments of this application provide a paging method in which an access network device configures a first parameter for a terminal device. This first parameter is used to adjust the paging time window (PTW) parameter and / or extend the discontinuous reception (eDRX) period of the terminal device. Then, the access network device sends a paging message to the terminal device according to the first parameter.

[0006] In this embodiment, since the access network device can configure a first parameter for the terminal device, which can adjust the duration of the PTW and / or the length of the eDRX cycle, thereby adjusting the proportion of the PTW duration to the eDRX cycle, the access network device can flexibly control the duration and timing of the paging process. This improves the flexibility of the paging process between the terminal device and the access network device, and enhances the flexibility of the terminal device in listening to paging downlink control information from the access network device and receiving paging messages.

[0007] According to the first aspect, in a first embodiment of the first aspect of the present application, the first parameter is a PTW scaling factor, which is used to determine the duration of the target PTW; or, the first parameter is the duration of the target PTW.

[0008] In this embodiment, the first parameter can be the parameter for adjusting the PTW. By determining the target PTW, the terminal device is controlled to listen for paging downlink control information from the access network device, which helps to improve the flexibility of the paging process between the terminal device and the access network device.

[0009] According to the first embodiment of the first aspect, in the second embodiment of the first aspect of the present application, when the first parameter is a PTW scaling factor, the duration of the target PTW is equal to the product of the duration of the initial PTW and the PTW scaling factor.

[0010] In this embodiment, it is further proposed how to use the PTW scaling factor to determine the target PTW when the aforementioned first parameter is the PTW scaling factor.

[0011] According to the first aspect, in a third embodiment of the first aspect of the present application, the first parameter is an eDRX cycle scaling factor, which is used to determine the target eDRX cycle; or, the first parameter is the target eDRX cycle.

[0012] In this embodiment, the first parameter is proposed to be a parameter for adjusting the eDRX cycle. By determining the target eDRX cycle, the time interval between two eDRX cycles is controlled to adjust the frequency of sending access network paging messages (RAN-paging). Therefore, it is beneficial to improve the flexibility of the paging process between the terminal device and the access network device.

[0013] According to the third implementation of the first aspect, in the fourth implementation of the first aspect of the present application, when the first parameter is an eDRX period scaling factor, the target eDRX period is equal to the product of the initial eDRX period and the eDRX period scaling factor.

[0014] In this embodiment, it is further proposed how to use the eDRX period scaling factor to determine the target eDRX period when the aforementioned first parameter is the eDRX period scaling factor.

[0015] According to any one of the first, first to fourth embodiments of the first aspect, in the fifth embodiment of the first aspect of this application, the method further includes: the access network device sending the first parameter to the core network device.

[0016] In this embodiment, after the access network device sends the aforementioned first parameter to the core network device, the core network device will also determine the target PTW and / or target eDRX period based on the first parameter, and submit a paging message to the access network device according to the target PTW and / or target eDRX period. Therefore, it is beneficial to ensure that the time range for the core network device to submit paging messages to the access network device is consistent with the time range for the terminal device to listen for paging messages from the access network device.

[0017] According to any of the foregoing embodiments, in the sixth embodiment of the first aspect of the present application, the first parameter is located in the radio resource control release message.

[0018] According to any of the foregoing embodiments, in the seventh embodiment of the first aspect of the present application, the PTW scaling factor is greater than 0 and less than 1.

[0019] In this embodiment, the PTW scaling factor is proposed to be greater than 0 and less than 1. This can be understood as the access network device instructing the terminal device to shorten the PTW duration; or it can be understood as the access network device controlling the terminal device to determine a shorter PTW as the target PTW. Since the terminal device consumes power to listen to paging downlink control information and receive paging messages, shortening the PTW duration shortens the time the terminal device listens to paging downlink control information within one eDRX cycle. Therefore, it helps to save power consumption of the terminal device and extend the standby time of the terminal device.

[0020] According to any of the foregoing embodiments, in the eighth embodiment of the first aspect of the present application, the eDRX period scaling factor is greater than 1.

[0021] In this embodiment, an eDRX cycle scaling factor greater than 1 is proposed. This can be understood as the access network device instructing the terminal device to extend the eDRX cycle; it can also be understood as the access network device reducing the number of times the terminal device listens for paging downlink control information within a certain period; or it can be understood as the access network device controlling the terminal device to determine a longer eDRX cycle as the target eDRX cycle. Since the terminal device consumes power to listen for paging downlink control information and receive paging messages, a longer eDRX cycle extends the time the terminal device is in sleep mode, and the ratio of the terminal device's PTW duration to the eDRX cycle decreases, which relatively shortens the time the terminal device needs to listen for paging downlink control information within the eDRX cycle. Therefore, it is beneficial to save the terminal device's power consumption and extend its standby time.

[0022] According to any of the foregoing embodiments, in the ninth embodiment of the first aspect of this application, when the following preset conditions are met, the access network device executes the methods listed in any one of the foregoing first aspect, the first embodiment of the first aspect to the ninth embodiment of the first aspect:

[0023] The preset conditions include at least one of the following: the terminal device is located in a cell under a candidate access network device within the access network notification area, and the access network device and the candidate access network device are time-synchronized; or, the access network notification area is a cell under the access network device; or, the mobile speed of the terminal device is less than a first preset value; or, the signal quality of the terminal device is greater than a second preset value.

[0024] Secondly, embodiments of this application provide a paging method in which a terminal device receives a first parameter from an access network device. The first parameter is used to adjust the paging time window (PTW) parameter of the terminal device and / or extend the discontinuous reception (eDRX) period. The terminal device listens for paging downlink control information from the access network device based on the first parameter.

[0025] In this embodiment, since the access network device can configure a first parameter for the terminal device, which can adjust the duration of the PTW or the length of the eDRX period, the terminal device can listen for paging downlink control information from the access network device according to the aforementioned first parameter. Therefore, the access network device can flexibly control the duration and timing of the paging process, thereby improving the flexibility of the paging process between the terminal device and the access network device, and thus the flexibility of the terminal device in listening for paging downlink control information from the access network device and receiving paging messages.

[0026] According to the second aspect, in a first embodiment of the second aspect of this application, the first parameter is a PTW scaling factor, which is used to determine the duration of the target PTW; or, the first parameter is the duration of the target PTW. The terminal device listens to paging downlink control information from the access network device based on the first parameter, including: the terminal device listens to paging downlink control information from the access network device within the target PTW.

[0027] In this embodiment, the first parameter can be the parameter for adjusting the PTW. By determining the target PTW, the terminal device is controlled to listen for paging downlink control information from the access network device, which helps to improve the flexibility of the paging process between the terminal device and the access network device.

[0028] According to the first embodiment of the second aspect, in the second embodiment of the second aspect of this application, the method further includes: the terminal device replacing the duration of the initial PTW with the duration of the target PTW, wherein the duration of the target PTW is equal to the product of the duration of the initial PTW and the PTW scaling factor.

[0029] Specifically, it can be understood that when the first parameter is the PTW scaling factor, the terminal device multiplies the duration of the initial PTW by the PTW scaling factor to obtain the target PTW, and replaces the duration of the initial PTW with the duration of the target PTW; when the first parameter is the duration of the target PTW, the terminal device directly replaces the duration of the initial PTW with the duration of the target PTW.

[0030] In this embodiment, it is further proposed how the terminal device can use the PTW scaling factor to determine the target PTW when the aforementioned first parameter is the PTW scaling factor; and how the terminal device can directly replace the duration of the initial PTW with the duration of the target PTW when the aforementioned first parameter is the duration of the target PTW.

[0031] According to the second aspect, in a third embodiment of the second aspect of this application, the first parameter is an eDRX period scaling factor, which is used to determine the target eDRX period; or, the first parameter is the target eDRX period. The terminal device listens to paging downlink control information from the access network device according to the first parameter, including: the terminal device listens to paging downlink control information from the access network device according to the target eDRX period and receives paging messages.

[0032] In this embodiment, the first parameter is proposed to be a parameter for adjusting the eDRX cycle. By determining the target eDRX cycle, the time interval between two eDRX cycles is controlled to adjust the frequency of sending access network paging messages (RAN-paging). Therefore, it is beneficial to improve the flexibility of the paging process between the terminal device and the access network device.

[0033] According to the third implementation of the second aspect, in the fourth implementation of the second aspect of the present application, the method further includes: the terminal device replacing the initial eDRX cycle with the target eDRX cycle, wherein the target eDRX cycle is equal to the product of the initial eDRX cycle and the eDRX cycle scaling factor.

[0034] Specifically, it can be understood that when the first parameter is the eDRX cycle scaling factor, the terminal device multiplies the initial eDRX cycle by the eDRX cycle scaling factor to obtain the target eDRX cycle, and replaces the initial eDRX cycle with the target eDRX cycle; when the first parameter is the target eDRX cycle, the terminal device directly replaces the initial eDRX cycle with the target eDRX cycle.

[0035] In this embodiment, it is further proposed how the terminal device can use the eDRX cycle scaling factor to determine the target eDRX cycle when the aforementioned first parameter is the eDRX cycle scaling factor; and how the terminal device can directly replace the initial eDRX cycle with the target eDRX cycle when the aforementioned first parameter is the target eDRX cycle.

[0036] According to any of the foregoing embodiments, in the fifth embodiment of the second aspect of the present application, the first parameter is located in the radio resource control release message.

[0037] According to any of the foregoing embodiments, in the sixth embodiment of the second aspect of the present application, the PTW scaling factor is greater than 0 and less than 1.

[0038] In this embodiment, the PTW scaling factor is proposed to be greater than 0 and less than 1. This can be understood as the access network device instructing the terminal device to shorten the PTW duration; or it can be understood as the access network device controlling the terminal device to determine a shorter PTW as the target PTW. Since the terminal device consumes power to listen to paging downlink control information and receive paging messages, shortening the PTW duration shortens the time the terminal device listens to paging downlink control information within one eDRX cycle. Therefore, it helps to save power consumption of the terminal device and extend the standby time of the terminal device.

[0039] According to any of the foregoing embodiments, in the seventh embodiment of the second aspect of the present application, the eDRX period scaling factor is greater than 1.

[0040] In this embodiment, an eDRX cycle scaling factor greater than 1 is proposed. This can be understood as the access network device instructing the terminal device to extend the eDRX cycle; it can also be understood as the access network device reducing the number of times the terminal device listens for paging downlink control information within a certain period; or it can be understood as the access network device controlling the terminal device to determine a longer eDRX cycle as the target eDRX cycle. Since the terminal device consumes power to listen for paging downlink control information and receive paging messages, a longer eDRX cycle extends the time the terminal device is in sleep mode, and the ratio of the terminal device's PTW duration to the eDRX cycle decreases, which relatively shortens the time the terminal device needs to listen for paging downlink control information within the eDRX cycle. Therefore, it is beneficial to save the terminal device's power consumption and extend its standby time.

[0041] Thirdly, embodiments of this application provide a system information update method to improve the flexibility of signaling interaction between access network devices and terminal devices. In this system information update method, the terminal device receives a first message from the access network device. The first message includes first indication information, which instructs the terminal device to immediately obtain updated system information, or instructs the terminal device to obtain the updated system information after a first offset time, or instructs the terminal device to obtain the updated system information at the Broadcast Control Channel (BCCH) modification period boundary.

[0042] In this embodiment, since the terminal device can obtain the updated system information immediately based on the first indication information or obtain the updated system information after the first offset time, compared with the prior art scheme that can only obtain the updated system information after the eDRX system message acquisition boundary, this embodiment advances the scope within which the terminal device can obtain the updated system information, which is beneficial to improving the flexibility of the terminal device in obtaining the updated system information. Furthermore, compared with the prior art that must check the validity of system information before access and obtain the updated system information when the system information becomes invalid, this embodiment helps to shorten the latency introduced by the terminal device obtaining the updated system information before access.

[0043] According to a third aspect, in a first embodiment of the third aspect of this application, the first message includes second indication information and the first indication information, wherein the second indication information is used to instruct the terminal device to obtain the updated system information at the BCCH modification cycle boundary. The method further includes: the terminal device obtaining the updated system information at the BCCH modification cycle boundary.

[0044] This can also be understood as the earliest the terminal device can obtain system information at the BCCH modification cycle boundary. It should also be understood that the aforementioned BCCH modification cycle boundary refers to the next BCCH modification cycle boundary after the terminal device receives the first message; in other words, it is the most recent BCCH modification cycle boundary after the terminal device receives the first message.

[0045] In this embodiment, since the terminal device can obtain the updated system information at the BCCH modification cycle boundary, which is generally earlier than the eDRX system message acquisition boundary, this embodiment advances the time when the terminal device can obtain the updated system information. This improves the flexibility of the terminal device in obtaining the updated system information and reduces the latency introduced by obtaining the updated system information before the terminal device accesses the network.

[0046] According to a third aspect, in a second embodiment of the third aspect of this application, the first message includes the first indication information but does not include the second indication information. The method further includes: the terminal device immediately obtaining the updated system information.

[0047] In this embodiment, the terminal device can immediately obtain updated system information after receiving the first message. That is, it can obtain updated system information as early as possible based on the aforementioned first message. Therefore, in addition to improving the flexibility of the terminal device in obtaining updated system information, it can further reduce the latency caused by the terminal device obtaining updated system information before accessing the network.

[0048] According to a third aspect, in a third embodiment of the third aspect of this application, the first indication information is the first offset duration; or, the first message further includes the first offset duration. The method further includes: the terminal device acquiring system information after receiving the first offset duration of the first message.

[0049] In this embodiment, since the terminal device can directly determine the earliest time when it can obtain updated system information based on the first offset time, it can improve the flexibility of the terminal device in obtaining updated system information and shorten the latency caused by updating system messages before the terminal device accesses the network. Furthermore, since the terminal device can know how long it needs to wait compared to the current time to obtain updated system information through the first offset duration, no further calculation is required, which helps reduce the computational load of the terminal device and saves its energy consumption.

[0050] According to any one of the first to third embodiments of the third aspect, in the fourth embodiment of the third aspect of this application, the first indication information is used to indicate a modification of the BCCH to a first terminal device, wherein the extended discontinuous reception (eDRX) period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate a modification of the BCCH to a second terminal device, wherein the second terminal device does not include terminal devices whose eDRX period is longer than the BCCH modification period.

[0051] According to any of the foregoing embodiments, in the fifth embodiment of the third aspect of the present application, the terminal device receives third indication information, which is used to indicate whether the updated system information has changed.

[0052] For a single system information change, the access network device may send the aforementioned first message multiple times consecutively. Consequently, the terminal device may receive multiple first messages, potentially misinterpreting the system information as having changed multiple times, thus repeatedly acquiring updated system information and causing unnecessary power consumption. In this embodiment, the first message carries third indication information, which indicates whether the updated system information has changed. This implementation helps prevent the terminal device from repeatedly acquiring the same system information, thus avoiding excessive power consumption.

[0053] According to any of the foregoing embodiments, in the sixth embodiment of the third aspect of the present application, the first indication information is systemInfoModification-eDRX; and the second indication information is systemInfoModification.

[0054] Fourthly, embodiments of this application provide a system information updating method, in which...

[0055] The access network device sends a first message to the terminal device. The first message includes first indication information, which is used to instruct the terminal device to immediately obtain the updated system information, or to instruct the terminal device to obtain the updated system information after a first offset time, or to instruct the terminal device to obtain the updated system information at the Broadcast Control Channel (BCCH) modification period boundary.

[0056] In this embodiment, since the terminal device can obtain the updated system information immediately based on the first indication information or obtain the updated system information after the first offset time, compared with the prior art scheme that can only obtain the updated system information after the eDRX system message acquisition boundary, this embodiment advances the scope within which the terminal device can obtain the updated system information, which is beneficial to improving the flexibility of the terminal device in obtaining the updated system information. Furthermore, compared with the prior art that must check the validity of system information before access and obtain the updated system information when the system information becomes invalid, this embodiment helps to shorten the latency introduced by the terminal device obtaining the updated system information before access.

[0057] According to the fourth aspect, in a first embodiment of the fourth aspect of the present application, the first message includes a second instruction information and the first instruction information, wherein the second instruction information is used to instruct the terminal device to obtain the updated system information at the BCCH modification cycle boundary.

[0058] In this embodiment, the terminal device can obtain the updated system information at the BCCH modification cycle boundary, which is generally earlier than the eDRX system message acquisition boundary. Compared to the prior art, which requires the acquisition of updated system information only after the eDRX system message acquisition boundary, this embodiment advances the scope within which the terminal device can obtain the updated system information. This improves the flexibility of the terminal device in obtaining the updated system information and reduces the latency introduced by the terminal device in obtaining the updated system information before access.

[0059] According to the fourth aspect, in the second embodiment of the fourth aspect of the present application, the first message includes the first instruction information but does not include the second instruction information.

[0060] In this embodiment, the terminal device can immediately obtain updated system information after receiving the first message. That is, it can obtain updated system information as early as possible based on the aforementioned first message. Therefore, in addition to improving the flexibility of the terminal device in obtaining updated system information, it can further reduce the latency caused by the terminal device obtaining updated system information before accessing the network.

[0061] According to the fourth aspect, in the third embodiment of the fourth aspect of the present application, the first indication information is the first offset duration; or, the first message further includes the first offset duration.

[0062] In this embodiment, the terminal device can directly determine the earliest time when it can obtain updated system information based on the first offset time. This improves the flexibility of the terminal device in obtaining updated system information and reduces the latency caused by updating system messages before the terminal device accesses the network. Furthermore, since the terminal device can determine how long it needs to wait compared to the current time to obtain updated system information using the first offset time, no further calculation is required, which helps reduce the computational load on the terminal device and saves its energy consumption.

[0063] According to any one of the first to third embodiments of the fourth aspect, in the fourth embodiment of the fourth aspect of this application, the first indication information is used to indicate a modification of the BCCH to a first terminal device, wherein the extended discontinuous reception (eDRX) period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate a modification of the BCCH to a second terminal device, wherein the second terminal device does not include terminal devices whose eDRX period is longer than the BCCH modification period.

[0064] According to any of the foregoing embodiments, in the fifth embodiment of the fourth aspect of this application, the terminal device receives third indication information, which is used to indicate whether the updated system information has changed.

[0065] For a single system information change, the access network device may send the aforementioned first message multiple times consecutively. Consequently, the terminal device may receive multiple first messages, potentially misinterpreting the system information as having changed multiple times, thus repeatedly acquiring updated system information and causing unnecessary power consumption. In this embodiment, the first message carries third indication information, which indicates whether the updated system information has changed. This implementation helps prevent the terminal device from repeatedly acquiring the same system information, thus avoiding excessive power consumption.

[0066] According to any of the foregoing embodiments, in the sixth embodiment of the fourth aspect of the present application, the first indication information is systemInfoModification-eDRX; and the second indication information is systemInfoModification.

[0067] Fifthly, embodiments of this application provide a communication device, which may also be a chip or module within a device, or a chip or system-on-a-chip. The communication device includes: a processing unit configured to configure a first parameter for a terminal device, the first parameter being used to adjust the paging time window (PTW) parameter of the terminal device and / or extend the discontinuous reception (eDRX) period; and a transceiver unit configured to send a paging message to the terminal device according to the first parameter.

[0068] In this embodiment, since the access network device can configure a first parameter for the terminal device, this first parameter can adjust the duration of the PTW or the length of the eDRX cycle, thereby adjusting the proportion of the PTW duration to the eDRX cycle. Therefore, the access network device can flexibly control the duration and timing of the paging process, which improves the flexibility of the paging process between the terminal device and the access network device, and enhances the flexibility of the terminal device in listening to paging downlink control information from the access network device and receiving paging messages.

[0069] According to the fifth aspect, in a first embodiment of the fifth aspect of the present application, the first parameter is a PTW scaling factor, which is used to determine the duration of the target PTW; or, the first parameter is the duration of the target PTW.

[0070] According to the first embodiment of the fifth aspect, in the second embodiment of the fifth aspect of this application, when the first parameter is a PTW scaling factor, the duration of the target PTW is equal to the product of the duration of the initial PTW and the PTW scaling factor.

[0071] According to the fifth aspect, in the third embodiment of the fifth aspect of the present application, the first parameter is an eDRX cycle scaling factor, which is used to determine the target eDRX cycle; or, the first parameter is the target eDRX cycle.

[0072] According to the third embodiment of the fifth aspect, in the fourth embodiment of the fifth aspect of the present application, when the first parameter is an eDRX period scaling factor, the target eDRX period is equal to the product of the initial eDRX period and the eDRX period scaling factor.

[0073] According to any one of the fifth, first to fourth embodiments of the fifth aspect, in the fifth embodiment of the fifth aspect of this application, the transceiver unit is further configured to send the first parameter to the core network device.

[0074] Sixthly, embodiments of this application provide a communication device, which may also be a chip or module within a device, or a chip or system-on-a-chip. The communication device includes: a transceiver unit, configured to receive a first parameter from an access network device, the first parameter being used to adjust the paging time window (PTW) parameter of the terminal device and / or extend the discontinuous reception (eDRX) period; and a processing unit, configured to listen to paging downlink control information from the access network device according to the first parameter.

[0075] In this embodiment, since the access network device can configure a first parameter for the terminal device, which can adjust the duration of the PTW or the length of the eDRX cycle, the terminal device can listen for paging downlink control information from the access network device according to the aforementioned first parameter. Therefore, the access network device can flexibly control the duration and timing of the paging process, thereby improving the flexibility of the paging process between the terminal device and the access network device.

[0076] According to the sixth aspect, in the first embodiment of the sixth aspect of the present application, the first parameter is a PTW scaling factor, which is used to determine the duration of the target PTW; or, the first parameter is the duration of the target PTW; the processing unit is specifically used to listen to paging downlink control information from the access network device within the target PTW.

[0077] According to the first embodiment of the sixth aspect, in the second embodiment of the sixth aspect of this application, the processing unit is further configured to replace the duration of the initial PTW with the duration of the target PTW, wherein the duration of the target PTW is equal to the product of the duration of the initial PTW and the PTW scaling factor.

[0078] This can be understood as follows: the processing unit is further configured to multiply the duration of the initial PTW by the PTW scaling factor when the first parameter is the PTW scaling factor, to obtain the target PTW; or, the processing unit is further configured to replace the duration of the initial PTW with the duration of the target PTW when the first parameter is the duration of the target PTW.

[0079] According to the sixth aspect, in the third embodiment of the sixth aspect of this application, the first parameter is an eDRX cycle scaling factor, which is used to determine the target eDRX cycle; or, the first parameter is the target eDRX cycle. The processing unit is specifically configured to listen for paging downlink control information from the access network device according to the target eDRX cycle.

[0080] According to the third embodiment of the sixth aspect, in the fourth embodiment of the sixth aspect of the present application, the processing unit is further configured to replace the initial eDRX period with the target eDRX period, wherein the target eDRX period is equal to the product of the initial eDRX period and the eDRX period scaling factor.

[0081] This can be understood as follows: the processing unit is further configured to multiply the initial eDRX period by the eDRX period scaling factor when the first parameter is the eDRX period scaling factor, to obtain the target eDRX period; or, the processing unit is further configured to replace the initial eDRX period with the target eDRX period when the first parameter is the target eDRX period.

[0082] In a seventh aspect, embodiments of this application provide a communication device, which may also be a chip or module within a device, or a chip or system-on-a-chip. The communication device includes: a transceiver unit, configured to receive a first message from an access network device, the first message including first indication information, the first indication information being configured to instruct the terminal device to immediately obtain the updated system information, or to instruct the terminal device to obtain the updated system information after a first offset time period, or to instruct the terminal device to obtain the updated system information at the Broadcast Control Channel (BCCH) modification period boundary.

[0083] In this embodiment, since the communication device can immediately obtain the updated system information based on the first indication information or obtain the updated system information after the first offset time, compared with the prior art scheme that can only obtain the updated system information after the eDRX system message acquisition boundary, this embodiment advances the scope within which the terminal device can obtain the updated system information, which is beneficial to improving the flexibility of the terminal device in obtaining the updated system information. Furthermore, compared with the prior art that must check the validity of system information before access and obtain the updated system information when the system information becomes invalid, this embodiment helps to shorten the latency introduced by the terminal device in obtaining the updated system information before access.

[0084] According to a seventh aspect, in a first embodiment of the seventh aspect of this application, the first message includes a second indication information and the first indication information. The second indication information is used to instruct the terminal device to obtain the updated system information at the BCCH modification cycle boundary. The transceiver unit is further configured to obtain the updated system information at the BCCH modification cycle boundary.

[0085] According to the seventh aspect, in a second embodiment of the seventh aspect of this application, the first message includes the first indication information but does not include the second indication information. The transceiver unit is further configured to immediately obtain the updated system information.

[0086] According to the seventh aspect, in a third embodiment of the seventh aspect of this application, the first indication information is the first offset duration; or, the first message further includes the first offset duration. The transceiver unit is further configured to acquire system information after receiving the first offset duration of the first message.

[0087] According to any one of the seventh aspect and the first to third embodiments of the seventh aspect, in the fourth embodiment of the seventh aspect of this application, the first indication information is used to indicate a modification of the BCCH to a first terminal device, wherein the extended discontinuous reception (eDRX) period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate a modification of the BCCH to a second terminal device, wherein the second terminal device does not include terminal devices whose eDRX period is longer than the BCCH modification period.

[0088] Eighthly, embodiments of this application provide a communication device, which may also be a chip or module within a device, or a chip or system-on-a-chip. The communication device includes a transceiver unit for a terminal device to send a first message. The first message includes first indication information, which instructs the terminal device to immediately obtain the updated system information, or instructs the terminal device to obtain the updated system information after a first offset time, or instructs the terminal device to obtain the updated system information at the Broadcast Control Channel (BCCH) modification period boundary.

[0089] In this embodiment, since the terminal device can obtain the updated system information immediately based on the first indication information or obtain the updated system information after the first offset time, compared with the prior art scheme that can only obtain the updated system information after the eDRX system message acquisition boundary, this embodiment advances the scope within which the terminal device can obtain the updated system information, which is beneficial to improving the flexibility of the terminal device in obtaining the updated system information. Furthermore, compared with the prior art that must check the validity of system information before access and obtain the updated system information when the system information becomes invalid, this embodiment helps to shorten the latency introduced by the terminal device obtaining the updated system information before access.

[0090] According to the eighth aspect, in a first embodiment of the eighth aspect of the present application, the first message includes a second instruction information and the first instruction information, wherein the second instruction information is used to instruct the terminal device to obtain the updated system information at the BCCH modification cycle boundary.

[0091] According to the eighth aspect, in the second embodiment of the eighth aspect of the present application, the first message includes the first instruction information but does not include the second instruction information.

[0092] According to the eighth aspect, in the third embodiment of the eighth aspect of the present application, the first indication information is the first offset duration; or, the first message further includes the first offset duration.

[0093] According to any one of the first to third embodiments of the eighth aspect, in the fourth embodiment of the eighth aspect of this application, the first indication information is used to indicate a modification of the BCCH to a first terminal device, wherein the extended discontinuous reception (eDRX) period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate a modification of the BCCH to a second terminal device, wherein the second terminal device does not include terminal devices whose eDRX period is longer than the BCCH modification period.

[0094] Ninthly, embodiments of this application provide a communication device, which may be an access network device as described in the foregoing embodiments, or a chip within the access network device. The communication device may include a processing module and a transceiver module. When the communication device is an access network device, the processing module may be a processor, and the transceiver module may be a transceiver. The access network device may also include a storage module, which may be a memory. The storage module stores instructions, and the processing module executes the instructions stored in the storage module to cause the access network device to perform the method of the first aspect or any embodiment of the first aspect, or to cause the access network device to perform the method of the fourth aspect or any embodiment of the fourth aspect. When the communication device is a chip within an access network device, for example, when the communication device is a chip within the access network device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc. The processing module executes the instructions stored in the storage module to cause the access network device to perform the method of the first aspect or any embodiment of the first aspect, or to cause the access network device to perform the method of the fourth aspect or any embodiment of the fourth aspect. The storage module can be an internal storage module of the chip (e.g., registers, caches, etc.) or an external storage module of the access network device located outside the chip (e.g., read-only memory, random access memory, etc.).

[0095] Tenthly, embodiments of this application provide a communication device, which may be a terminal device as described in the foregoing embodiments, or a chip within the terminal device. The communication device may include a processing module and a transceiver module. When the communication device is a terminal device, the processing module may be a processor, and the transceiver module may be a transceiver; the terminal device may also include a storage module, which may be a memory; the storage module is used to store instructions, and the processing module executes the instructions stored in the storage module to cause the terminal device to perform the method of the second aspect or any embodiment of the second aspect, or to cause the terminal device to perform the method of the third aspect or any embodiment of the third aspect. When the communication device is a chip within a terminal device, for example, when the communication device is a chip in the terminal device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc.; the processing module executes the instructions stored in the storage module to cause the terminal device to perform the method of the first aspect or any embodiment of the first aspect, or to cause the terminal device to perform the method of the third aspect or any embodiment of the third aspect. The storage module can be an internal storage module of the chip (e.g., registers, caches, etc.) or an external storage module of the access network device located outside the chip (e.g., read-only memory, random access memory, etc.).

[0096] Eleventhly, this application provides a communication device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory for storing programs or instructions that, when executed by the processor, cause the communication device to perform the methods as described in the first aspect or any embodiment of the first aspect, and the methods as described in the fourth aspect or any embodiment of the fourth aspect.

[0097] In a twelfth aspect, this application provides a communication device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory for storing programs or instructions that, when executed by the processor, cause the communication device to perform the methods as described in the second aspect or any embodiment of the second aspect, and the methods as described in the third aspect or any embodiment of the third aspect.

[0098] In a thirteenth aspect, embodiments of this application provide a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in any of the various embodiments of the first to fourth aspects and the various embodiments of the foregoing aspects.

[0099] In a fourteenth aspect, embodiments of this application provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the methods described in any of the various embodiments of the first to fourth aspects and the various aspects thereof.

[0100] In a fifteenth aspect, embodiments of this application provide a communication system, which includes the communication device described in the first aspect and any embodiment of the first aspect, and the communication device described in the second aspect and any embodiment of the second aspect; or, the communication system includes the communication device described in the third aspect and any embodiment of the third aspect, and the communication device described in the fourth aspect and any embodiment of the fourth aspect. Attached Figure Description

[0101] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application.

[0102] Figure 1 This is an application scenario diagram of the paging method in the embodiments of this application;

[0103] Figure 2 This is a flowchart of a paging method in an embodiment of this application;

[0104] Figure 3 This is a schematic diagram of the eDRX cycle in an embodiment of this application;

[0105] Figure 4 This is another flowchart of the paging method in the embodiments of this application;

[0106] Figure 5 This is a flowchart of a system information update method in an embodiment of this application;

[0107] Figure 6 This is another flowchart of the system information update method in the embodiments of this application;

[0108] Figure 7A This is a schematic diagram of one embodiment of the system information update method in this application.

[0109] Figure 7B This is a schematic diagram of another embodiment of the system information update method in this application;

[0110] Figure 7C This is a schematic diagram of another embodiment of the system information update method in this application;

[0111] Figure 8 This is a schematic diagram of one embodiment of the communication device in this application;

[0112] Figure 9 This is a schematic diagram of another embodiment of the communication device in this application;

[0113] Figure 10 This is a schematic diagram of another embodiment of the communication device in this application;

[0114] Figure 11 This is a schematic diagram of another embodiment of the communication device in this application. Detailed Implementation

[0115] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0116] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0117] This application provides a paging method, device, and system to improve the flexibility of signaling interaction between access network devices and terminal devices.

[0118] The following section introduces the system architecture and application scenarios to which the paging method proposed in this application is applicable:

[0119] The solution proposed in this application is mainly applied to communication systems based on 5G new radio (NR) technology, but can also be based on subsequent evolved access standards; the specific application is not limited here. Specifically, this solution can be applied to Internet of Things (IoT) systems based on 5G NR, for example, based on narrowband Internet of Things (NB-IoT) or enhanced machine-type communication (eMTC) standards; the specific application is not limited here.

[0120] The solution proposed in this application is mainly applied to scenarios where terminal devices configured with discontinuous reception (DRX) or extended discontinuous reception (eDRX) mechanisms are listening to paging messages. In this scenario, the terminal device periodically enters sleep mode and does not listen to paging messages; however, it wakes up from sleep mode during another period within this cycle to listen to paging messages, decodes the messages to perform corresponding operations, or updates relevant parameters. Figure 1 For example, this communication system includes an access network device 101, a terminal device 102, and a core network device 103. In an IoT scenario, the terminal device 102 will listen for paging messages to report data to the access network device 101; alternatively, the terminal device 102 may listen for incoming calls from the access network device 101 to trigger a random access procedure. Furthermore, in an emergency warning scenario, the terminal device 102 can also determine whether it needs to receive Earthquake and Tsunami Warning System (ETWS) and Commercial Mobile Alert Service (CMAS) information through paging messages. Additionally, in this scenario, the core network device 103 can obtain relevant information about the terminal device 102 from the access network device 101, so that the core network device 103 can send instructions to the terminal device 102.

[0121] In this embodiment, the aforementioned access network device 101 can be a radio access network (RAN) device, such as a base station or access point; it can also refer to a device in the access network that communicates with a wireless terminal device via one or more cells on the air interface. The access network device 101 can be used to convert received air frames to and from Internet Protocol (IP) packets, acting as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The access network device 101 can also coordinate the attribute management of the air interface. For example, the access network device 101 may include an evolved Node B (NodeB, eNB, or e-NodeB) in a Long Term Evolution (LTE) system or an Evolved LTE-A system, a Next Generation Node B (gNB) in a New Radio (NR) system, or it may include a centralized unit (CU) and a distributed unit (DU) in a Cloud RAN system; however, this embodiment is not limited to these categories.

[0122] It should be understood that the access network device 101 in this embodiment can be any of the aforementioned devices or chips, and no specific limitation is made here. Whether as a device or a chip, the access network device 101 can be manufactured, sold, or used as an independent product. In this embodiment and subsequent embodiments, only the access network device is described as an example.

[0123] Furthermore, the aforementioned terminal device 102 includes devices that provide voice and / or data connectivity to users. For example, it may include a handheld device with wireless connectivity or a processing device connected to a wireless modem. The terminal device 102 can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal device may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point (AP), remote terminal equipment, access terminal equipment, user terminal equipment, user agent, or user device, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices, smart wearable devices, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. Furthermore, in a 5G-based vehicle-to-everything (V2X) system, the terminal device 102 can also be an in-vehicle terminal. In addition, the terminal device 102 can also be a wearable device, such as glasses, gloves, watches, clothing, shoes, or other portable devices that can be worn directly on the body or integrated into the user's clothing or accessories; this application does not impose any specific limitations. Furthermore, in IoT scenarios, the terminal device 102 can be a restricted device, such as a low-power terminal device, a terminal device with limited storage capacity, a terminal device with limited computing power, or other NB-IoT devices and eMTC devices; this is not specifically limited here.

[0124] It should be understood that the terminal device 102 in this embodiment can be any of the aforementioned devices or chips, and no specific limitation is made here. Whether as a device or a chip, the terminal device 102 can be manufactured, sold, or used as an independent product. In this embodiment and subsequent embodiments, only a terminal device is used as an example for description.

[0125] In addition, the aforementioned core network device 103 can be an access and mobility management function (AMF) network element used to control the aforementioned terminal device 102, or a user plane function (UPF) network element used to send data to the aforementioned terminal device 102, and the specifics are not limited here.

[0126] Based on the aforementioned system architecture and application scenarios, the paging method process will be described below, as follows: Figure 2 As shown, it includes the following steps:

[0127] 201. The access network equipment configures the first parameter for the terminal equipment.

[0128] Specifically, the access network device can send the first parameter to the terminal device via proprietary signaling. For example, proprietary signaling such as a radio resource control release (RRC release) message; or, the access network device can broadcast the first parameter to the terminal device, which is not limited here.

[0129] After undergoing the RRC release procedure, the terminal device transitions from the RRC connected state to the inactive state. While in the inactive state, the access network device stores the terminal device's context, which refers to the link established between functional entities for information transmission. Additionally, the access network device stores connection information between the terminal device and the core network device. If the last access network device serving the terminal device receives downlink data from a UPF element or downlink signaling from an AMF element, the access network device will page the aforementioned terminal device in all cells within the radio access network (RAN) notification area (RNA). The RNA area refers to the range within which the access network device can page the terminal device. Specifically, when the terminal device is within the RNA area, its movement does not need to be reported to the core network. Only when the terminal device's RNA timer expires or the terminal device moves out of the RNA area does the terminal device need to initiate an RNAU (RAN-based notification area update) procedure to report to the core network device. In this embodiment, the RNA region can be one or more cells under the access network device, or it can be composed of multiple cells under multiple access network devices; the specific configuration is not limited here. When the RNA region is composed of multiple cells under multiple access network devices, the access network device can send XnAP-RAN-Paging messages to other access network devices within the RNA region through the Xn port.

[0130] Furthermore, this first parameter is related to the eDRX period or the paging time window (PTW). The relationship between the eDRX period and PTW is as follows: Figure 3As shown, a terminal device configured with eDRX begins listening for paging occasions (POs) at the start of the PTW (PTW_start) configured for it by the core network device, and stops listening at the end of the PTW (PTW_stop), or until a paging message containing the terminal device's non-access stratum identifier (NAS ID) is received during the PTW. It should be noted that the terminal device ends paging listening at the earlier of the time corresponding to the PTW end (PTW_stop) or the time corresponding to receiving the paging message containing the NAS ID. The terminal device will attempt to receive paging messages from the access network device at each PO within the PTW. It should be noted that the terminal device listens for paging downlink control information (paging DCI) scrambled with the paging radio network tempory identity (P-RNTI) on the physical downlink control channel (PDCCH) in each of the aforementioned POs. If the aforementioned paging downlink control information is detected, the terminal device will further receive paging messages on the physical downlink shared channel (PDSCH). Therefore, the terminal device can control the flexibility of receiving paging messages by adjusting the length of the PTW or the eDRX period.

[0131] In this embodiment, the first parameter is used to adjust the proportion of the paging time window PTW to the eDRX cycle.

[0132] Optionally, the first parameter can be used to adjust the Paging Time Window (PTW) parameter of the terminal device to obtain the target PTW. In this case, the first parameter can be a PTW scaling factor, which is used to adjust the duration of the PTW of the terminal device to determine the duration of the target PTW; the first parameter can also be the duration of the target PTW directly; in addition, the first parameter can also modify the duration of the PTW in other ways, such as by indicating a value in a predefined list of PTW length values ​​through a sequence number, which is not limited here.

[0133] Optionally, the first parameter can also be used to adjust the eDRX period of the terminal device to obtain the target eDRX period. In this case, the first parameter can be an eDRX period scaling factor, which is used to adjust the length of the eDRX period of the terminal device to determine the target eDRX period; the first parameter can also be the target eDRX period directly. In addition, the first parameter can also modify the eDRX period in other ways, such as by indicating a value in a predefined list of eDRX period values ​​through a sequence number. The specific method is not limited here.

[0134] Furthermore, it should be understood that the access network device can configure the aforementioned first parameter for the terminal device when any of the following preset conditions are met:

[0135] In one optional preset condition, the preset condition for configuring the aforementioned first parameter can be set according to the time synchronization status between access network devices within the RNA region. Optionally, when the time is synchronized between the access network devices within the RNA region, the PTW parameter can be configured to shorten the target PTW duration; when the time is not synchronized between the access network devices within the RNA region, the PTW parameter can be configured to extend the target PTW duration. Furthermore, the aforementioned time synchronization between two access network devices can be understood as the time deviation between these two access network devices being within a certain threshold range; the aforementioned time asynchrony between two access network devices can be understood as the time deviation between these two access network devices being greater than a certain threshold. For example, the terminal device is located in a cell under a candidate access network device within the RNA region, and the access network device is synchronized with the candidate access network device. In this case, since the aforementioned access network device is the last access network device connected to by the terminal device, the access network device retains the context of the terminal device. If the access network device is time-synchronized with other access network devices within the RNA area (i.e., the aforementioned candidate access network devices), adjusting the PTW length can control the flexibility of the terminal device in listening to paging downlink control information and receiving paging messages. For example, shortening the PTW duration can save the terminal device's energy consumption; extending the PTW can ensure that the terminal device is less likely to miss POs after moving or after cell reselection. The eDRX period can also be adjusted to control the flexibility of the terminal device in listening to paging downlink control information and receiving paging messages. For example, extending the eDRX period can save the terminal device's energy consumption; shortening the eDRX period can accelerate the time when the terminal device enters the next PO listening phase.

[0136] In another optional preset condition, the RNA region is a cell under the access network device. That is, the terminal device only moves within a certain cell under the access network device. Since the terminal device will not miss the PO due to cell reselection, the access network device can shorten the PTW duration by configuring the first parameter to achieve energy saving.

[0137] In another optional preset condition, the terminal device is stationary, or its movement trajectory is relatively fixed and far from the cell edge. Whether the terminal device is far from the cell edge or near the cell center can be measured by its signal quality. The signal quality can be measured by at least one of the following: reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), or signal to interference plus noise ratio (SINR). For example, when the signal quality of the terminal device is greater than a second preset value, it can be considered that the terminal device is far from the cell edge. Furthermore, if the terminal device's movement trajectory is relatively fixed, it can be understood that the terminal device will almost never perform cell reselection, and there will be no situation where the PO is missed due to cell reselection. Therefore, the access network equipment can shorten the PTW by configuring the first parameter to achieve energy saving.

[0138] It should be understood that the aforementioned first preset value and second preset value can be adjusted according to the actual application scenario, and this embodiment does not limit the specific data of the first preset value and the second preset value.

[0139] 202. The terminal device listens for paging downlink control information from the access network device based on the first parameter.

[0140] In this embodiment, after receiving the first parameter from the access network device, the terminal device can listen to the paging downlink control information from the access network device and receive paging messages within a certain time window of the target eDRX period determined by the first parameter; or listen to the paging downlink control information from the access network device and receive paging messages within the target PTW determined by the first parameter; or listen to the paging downlink control information from the access network device and receive paging messages within the target PTW of the aforementioned target eDRX period. Alternatively, the terminal device can listen to the paging downlink control information from the access network device and receive paging messages within several POs of the target eDRX period determined by the first parameter.

[0141] It should be understood that after receiving the aforementioned paging downlink control information, the terminal device will also receive paging messages from the network device. Therefore, in some embodiments, it can also be interpreted that the terminal device listens for paging messages from the access network device. In this embodiment and subsequent embodiments, the example of the terminal device listening for paging downlink control information and receiving paging messages will be used for illustration.

[0142] 203. The access network device sends the first parameter to the core network device.

[0143] In this embodiment, step 203 is optional. When the access network device executes step 203, there is no explicit temporal order between steps 202 and 203. That is, the step of the access network device sending the first parameter to the core network device is relatively independent of the step of the terminal device listening to the paging downlink control information. It can be understood that the access network device can first send the first parameter to the core network device, and then send a paging message to the terminal device based on the first parameter. Thus, the terminal device can listen to the paging downlink control information from the access network device based on the aforementioned first parameter. It can also be understood that while the access network device is sending the aforementioned first parameter to the core network device, the access network device also sends a paging message to the terminal device based on the first parameter, and then the terminal device listens to the paging downlink control information from the access network device based on the first parameter. The specifics are not limited here.

[0144] After executing step 203, the core network device can obtain the first parameter and determine the subsequent target PTW and / or target eDRX period based on the first parameter. Furthermore, when interacting with the access network device, the core network device can deliver the aforementioned target PTW and / or target eDRX period to the access network device via downlink data from the UPF or downlink signaling from the AMF.

[0145] In this embodiment, since the access network device can configure a first parameter for the terminal device, which can adjust the duration of the PTW or the length of the eDRX cycle, and thus adjust the proportion of the PTW duration to the eDRX cycle, the access network device can flexibly control the duration and timing of the paging process, thereby improving the flexibility of the paging process between the terminal device and the access network device.

[0146] The following section will further describe the process of this paging method, specifically as follows: Figure 4 As shown, it includes the following steps:

[0147] 401. Core network equipment configures paging time window (PTW) for terminal equipment.

[0148] In this embodiment, the core network device can send the paging time window length (PTW length) to the terminal device through signaling interaction with the terminal device. Optionally, when the core network device is an AMF (Advanced Feature Provider) element, it can configure the PTW for the terminal device during the attach procedure. For example, the core network device carries the paging time window length in the attach accept message based on the attach request. Optionally, when the core network device is a UPF (Universal Feature Provider) element, it can configure the PTW for the terminal device during the terminal device tracking procedure. For example, the core network device carries the paging time window length in the tracking area update accept (TAU accept) message based on the tracking area update request (TAU request). It should be understood that only some common procedures that can be used to configure the PTW for the terminal device have been listed above. In practical applications, other signaling procedures can also be reused, and specific details are not limited here.

[0149] 402. The core network equipment configures a mechanism for reporting inactive state transitions of terminal devices for the access network equipment.

[0150] The inactive state transition reporting mechanism for terminal devices refers to the access network device reporting its inactive state transition status to the core network device. This inactive state transition status indicates whether the terminal device has entered an inactive state. Optionally, the inactive state transition status of the terminal device can be configured via an RRC Inactive Transition Report Request IE. When this transition report is configured, the access network device will notify the core network via an RRC inactive transition report when an inactive state transition occurs.

[0151] In this embodiment, the core network device can send an RRC Inactive Transition Report Request IE to the access network device through signaling interaction with the access network device. Optionally, the core network device can include the RRC Inactive Transition Report Request IE in a context modification request. In this case, the access network device can reply with a context modification response message to the core network device to notify the core network device of successful configuration. Optionally, the core network device can include the RRC Inactive Transition Report Request IE in an initial context setup request. In this case, the access network device can reply with an initial context setup response message to the core network device to notify the core network device of successful configuration.

[0152] Furthermore, in practical applications, the core network device can also configure a reporting mechanism for inactive state transitions of terminal devices for the access network device in other signaling configurations; specific details are not limited here. It should be understood that once the core network device configures this reporting mechanism for inactive state transitions of terminal devices for the access network device, if the terminal device enters an inactive state, the access network device can report this to the core network device; that is, the access network device can send information about the inactive state transition of the terminal device to the core network device.

[0153] It should be understood that access network devices can report multiple times. For example, whenever the state of the terminal device changes from idle to inactive or from connected to inactive, the access network device can report the state of the terminal device to the core network device so that the core network device can know that the terminal device has entered the inactive state.

[0154] In this embodiment, when the aforementioned Figure 2 In the corresponding embodiment, when the first parameter is used to adjust the paging time window (PTW) configuration of the terminal device, the first parameter can be a PTW scaling factor. At this time, the access network device will execute step 403a. When the aforementioned... Figure 2 In the corresponding embodiment, when the first parameter is used to adjust the eDRX period of the terminal device, the first parameter can be an eDRX period scaling factor. At this time, the access network device will execute step 403b.

[0155] 403a. The access network equipment sends the PTW scaling factor to the terminal equipment.

[0156] The PTW scaling factor is used to adjust the duration of the PTW (Paging Shift) of the terminal device. Optionally, the PTW scaling factor is used to determine the target PTW, which uses the adjusted duration. Optionally, the product of the PTW scaling factor and the initial PTW duration can determine the duration of the target PTW, i.e., determine the target PTW. Therefore, the access network device can use the PTW scaling factor to adjust the timing of the terminal device listening for paging downlink control information and receiving paging messages.

[0157] Optionally, the PTW scaling factor is greater than 0 and less than 1. This can be understood as the access network device instructing the terminal device to shorten the PTW duration; or it can be understood as the access network device controlling the terminal device to determine a shorter PTW as the target PTW. Since the terminal device consumes power to listen to paging downlink control information and receive paging messages, shortening the PTW duration reduces the time the terminal device spends listening to paging downlink control information within one eDRX cycle. Therefore, it helps save power consumption and extend the standby time of the terminal device.

[0158] 403b. The access network equipment sends the eDRX period scaling factor to the terminal equipment.

[0159] The eDRX cycle scaling factor is used to adjust the eDRX cycle of the terminal device. Optionally, the eDRX cycle scaling factor is used to determine the target eDRX cycle. Optionally, the product of the eDRX cycle scaling factor and the initial eDRX cycle can determine the target eDRX cycle. Therefore, the access network device can use the eDRX cycle scaling factor to adjust the frequency of sending access network paging messages (RAN-paging).

[0160] 404a. The terminal equipment determines the target PTW based on the PTW scaling factor and listens for paging downlink control information from the access network equipment in the target PTW.

[0161] In this embodiment, after the access network device executes step 403a, the terminal device will execute step 404a.

[0162] For details, please refer to the relevant introduction in step 403a, which will not be repeated here.

[0163] 404b. The terminal device determines the target eDRX period based on the eDRX period scaling factor, and listens for paging downlink control information from the access network device in the PTW during the target eDRX period.

[0164] In this embodiment, after the access network device executes step 403b, the terminal device will execute step 404b.

[0165] For details, please refer to the relevant description in step 403b, which will not be repeated here.

[0166] 405a. Access network equipment sends PTW scaling factor to core network equipment.

[0167] Step 405a is optional. When the access network device executes step 405a, there is no explicit temporal order between step 405a and steps 403a to 404a. That is, the step of the access network device sending the PTW scaling factor to the core network device is independent of the step of the terminal device determining the target PTW based on the PTW scaling factor and listening for paging downlink control information from the access network device. It can be understood that the access network device can execute step 405a first, then step 403a, and then the terminal device executes step 404a. Alternatively, it can be understood that the access network device executes steps 403a and 405a simultaneously, and then the terminal device executes step 404a.

[0168] After the access network device has performed step 403a, it may perform step 405a.

[0169] Optionally, the access network device can send the PTW scaling factor to the core network device via an RRC inactive transition report. Alternatively, the access network device can also transmit the PTW scaling factor to the core network device using other signaling between the access network device and the core network device; specific details are not limited here.

[0170] In this embodiment, after the access network device sends the aforementioned PTW scaling factor to the core network device, the core network device will also determine the target PTW based on the PTW scaling factor and submit a paging message to the access network device according to the target PTW. Therefore, this helps ensure that the time range within which the core network device submits the paging message to the access network device is consistent with the time range within which the terminal device listens for the paging message from the access network device, ensuring that the terminal device can listen for the paging downlink control information from the access network device and receive the paging message within the target PTW.

[0171] 405b. The access network equipment sends the eDRX period scaling factor to the core network equipment.

[0172] Step 405b is optional. When the access network device executes step 405b, there is no explicit temporal order between step 405b and steps 403b to 404b. That is, the step of the access network device sending the eDRX period scaling factor to the core network device is independent of the step of the terminal device determining the target eDRX period based on the eDRX period scaling factor and listening for paging downlink control information from the access network device. It can be understood that the access network device can execute step 405b first, then step 403b, and then the terminal device executes step 404b. Alternatively, it can be understood that the access network device executes steps 403b and 405b simultaneously, and then the terminal device executes step 404b.

[0173] After the access network device has performed step 403b, it may perform step 405b.

[0174] Optionally, the access network device can send the eDRX period scaling factor to the core network device via an RRC inactive transition report. Alternatively, the access network device can also transmit the eDRX period scaling factor to the core network device using other signaling between the access network device and the core network device; specific details are not limited here.

[0175] In this embodiment, after the access network device sends the aforementioned eDRX period scaling factor to the core network device, the core network device will also determine the target eDRX period based on the eDRX period scaling factor. At this time, the access network device and the core network device use the same period, which is beneficial for data synchronization. If the target eDRX period is greater than the initial eDRX period, it is beneficial to save power consumption of the terminal device and extend the standby time of the terminal device.

[0176] Optionally, when the target eDRX period is any one of the optional eDRX period sets, the access network device may not perform step 405b.

[0177] When 403b is executed but 405b is not executed, the core network still delivers downlink data from UPF network elements or downlink signaling from AMF network elements according to the original cycle, or sends core network paging (CN-paging) messages. However, access network devices can flexibly change the frequency of sending access network paging (RAN-paging) messages.

[0178] When 405b is executed, it can be understood that the access network device simultaneously modifies the eDRX cycle parameters on both the terminal device and the core network side. Optionally, the eDRX cycle scaling factor is greater than 1. This can be interpreted as the access network device instructing the terminal device to extend the eDRX cycle; it can also be interpreted as the access network device reducing the number of times the terminal device listens for paging downlink control information within a certain period; or it can be interpreted as the access network device controlling the terminal device to determine a longer eDRX cycle as the target eDRX cycle. Since the terminal device consumes power to listen for paging downlink control information and receive paging messages, a longer eDRX cycle extends the time the terminal device is in sleep mode, and the ratio of the terminal device's PTW duration to the eDRX cycle decreases, which relatively shortens the time the terminal device needs to listen for paging downlink control information within the eDRX cycle. Therefore, it helps save power consumption of the terminal device and extends its standby time.

[0179] It should be understood that steps 403a to 405a and steps 403b to 405b are independent of each other. That is, the access network device sending the PTW scaling factor to the terminal device does not affect the access network device sending the eDRX period scaling factor to the terminal device. The terminal device adjusts the PTW duration and / or eDRX period based on the received first parameter. When the access network device only executes steps 403a and 403b, the terminal device will also execute steps 404a and 404b. At this time, the terminal device can determine the target PTW and the target eDRX period; that is, the terminal device will listen for paging messages from the access network device at the target PTW within the target eDRX period.

[0180] Optionally, when the first parameter is the duration of the target PTW, the PTW scaling factor in step 403a can be directly replaced by the duration of the target PTW. In this case, the terminal device in step 404a can directly utilize the target PTW without performing any other calculations, that is, directly listen for paging messages from the access network device in the target PTW.

[0181] Optionally, when the first parameter is the target eDRX period, the eDRX period scaling factor in step 403b can be directly replaced by the duration of the target eDRX period. In this case, the terminal device in step 404b can directly utilize the target eDRX period without performing any other calculations, that is, directly listen for paging messages from the access network device within the time window (e.g., paging time window) of the target eDRX period.

[0182] Based on the aforementioned system architecture and application scenarios, this application also proposes a system information updating method. The process of the system information updating method will be described below, as follows: Figure 5As shown, it includes the following steps:

[0183] 501. The terminal device receives the first message from the access network device.

[0184] In this embodiment, when the system information in the access network device changes, the access network device can send a first message to the terminal device. The terminal device can then receive the first message from the access network device. This first message includes at least first indication information, which instructs the terminal device to acquire updated system information (i.e., new system information) at a certain time after receiving the first message. Specifically, the first indication information instructs the terminal device to acquire the updated system information immediately, or to acquire the updated system information after a first offset time, or to acquire the updated system information after modifying the period boundary of the broadcast control channel (BCCH).

[0185] Optionally, the first indication information may be located in paging downlink control information (paging DCI) scrambled with a paging radionetwork tempory identity (P-RNTI). In this case, the first message may be paging downlink control information. Alternatively, the first indication information may also be carried in a short message within the paging downlink control information. In this case, the first message may be the aforementioned short message. Alternatively, the first indication information may be located in a paging message carried on a physical downlink shared channel (PDSCH). In this case, the first message may be the aforementioned paging message. Furthermore, in 5G NR or subsequent evolution standards, the first indication information may also be carried in other messages or signaling. Specific embodiments of this application do not limit the message carrying the first indication information.

[0186] 502. The terminal device obtains updated system information based on the first message.

[0187] In this embodiment, the terminal device will obtain updated system information based on the content indicated by the aforementioned first indication information. That is, the terminal device can obtain updated system information immediately, or after the first offset time, or at the modified period boundary of the Broadcast Control Channel (BCCH).

[0188] For details, please refer to step 501 above, which will not be repeated here.

[0189] In this embodiment, since the terminal device can immediately obtain updated system information based on the first indication information or obtain updated system information after the first offset time, compared with the prior art scheme that can only obtain updated system information after the eDRX system message acquisition boundary, this embodiment advances the scope of the terminal device that can obtain updated system information, which is beneficial to improving the flexibility of the terminal device in obtaining updated system information and shortening the latency introduced by the terminal device in obtaining updated system information.

[0190] Based on the foregoing embodiments, the information update method of this system will be further described below. Specifically, as follows... Figure 6 As shown, the system information update method includes the following steps:

[0191] 601. The terminal device receives the first message from the access network device.

[0192] The first message includes at least a first indication, which indicates that the system information in the access network device is about to change, so that the terminal device can obtain the updated system information at some point after receiving the first message. For details, please refer to the relevant description in step 501 above; it will not be repeated here.

[0193] In this embodiment, the first message may also include other indication information in different scenarios, so that the terminal device can obtain updated system information at different times based on the aforementioned different indication information. These will be described in detail below:

[0194] In one optional implementation, the first message includes first indication information and second indication information. The first indication information is used to indicate a modification to the Broadcast Control Channel (BCCH) to a first terminal device, and the second indication information is used to indicate a modification to the BCCH to a second terminal device. That is, the aforementioned first and second indication information are used to instruct different terminal devices that the BCCH of the access network device has been modified, so that the aforementioned different terminal devices can obtain updated system information at a later time. The eDRX period of the first terminal device is longer than the BCCH modification period. That is, the first terminal device is a terminal device configured with the eDRX mechanism, and the eDRX period is longer than the BCCH modification period, i.e., the eDRX period is longer than the system information change period. Furthermore, the second terminal device is a terminal device that is not configured with an eDRX period. For example, the second terminal device is a terminal device other than the first terminal device, or a terminal device that is only configured with the DRX mechanism.

[0195] In addition, it can also be understood that the first indication information is used to indicate that the system information of the terminal device configured with the eDRX mechanism has changed, and the second indication information is used to indicate that the system information of the terminal device configured with the DRX mechanism has changed.

[0196] Furthermore, similar to the aforementioned first indication information, the second indication information can be located in the paging DCI scrambled by P-RNTI, in which case the first message can be paging downlink control information. Alternatively, the first indication information can also be carried in a short message within the paging downlink control information, in which case the first message can be the aforementioned short message. Alternatively, the second indication information can be located in a paging message carried on the PDSCH. Furthermore, in 5G NR or subsequent evolution standards, the second indication information may also be carried in other messages or signaling. In addition, in 5G NR or subsequent evolution standards, the second indication information may also be carried in other messages or signaling; specific embodiments of this application do not limit the message carrying the second indication information.

[0197] Optionally, the first indication information is systemInfoModification-eDRX; the second indication information is systemInfoModification. It should be understood that in practical applications, other characters or fields can also be used to represent the aforementioned first and second indication information, and no specific limitation is made here.

[0198] In this embodiment, when the terminal device determines that the first message includes the aforementioned first indication information and second indication information, the terminal device will execute step 602a.

[0199] In another optional implementation, the first message includes only first indication information and not second indication information. The first indication information is used to indicate to the first terminal device a modification of the Broadcast Control Channel (BCCH), and the eDRX period of the first terminal device is longer than the BCCH modification period. Alternatively, the first indication information can be understood as notifying terminal devices configured with eDRX that system information has changed. Optionally, the first indication information is systemInfoModification-eDRX. For details, please refer to the description of the first indication information in the foregoing embodiments; it will not be repeated here.

[0200] In this embodiment, when the terminal device determines that the first message only includes the aforementioned first indication information and does not include the second indication information, the terminal device will execute step 602b.

[0201] In another alternative implementation, the first message includes a first offset duration. Optionally, the first indication information is the first offset duration; or, the first message includes the first indication information and the first offset duration.

[0202] When the first indication information is the first offset duration, the location carried by the first offset duration can be referred to the relevant description of the location carried by the aforementioned first indication information, which will not be repeated here.

[0203] When the first message includes the first indication information and the first offset duration, the first offset duration can be carried in the same message as the first indication information, or it can be carried in a different message; no specific limitation is made here. For example, the first indication information may be carried in a short message within the paging downlink control information, while the first offset duration may be carried in the paging downlink control information but not in that short message. In practical applications, other carrying methods may also exist, which will not be listed here.

[0204] In this embodiment, when the terminal device determines that the first message includes a first offset duration, the terminal device will execute step 602c.

[0205] 602a. The terminal device obtains updated system information at the BCCH modification cycle boundary.

[0206] In this embodiment, when the first message includes first indication information and second indication information, the terminal device will obtain the updated system information at the BCCH modification cycle boundary. Alternatively, it can be understood that the terminal device can obtain the updated system information as early as the BCCH modification cycle boundary. Since the length of the eDRX system message acquisition cycle is multiple times the length of the BCCH modification cycle, multiple BCCH modification cycle boundaries can exist before the eDRX system message acquisition cycle boundary. Therefore, it should also be understood that the aforementioned BCCH modification cycle boundary refers to the next BCCH modification cycle boundary after the terminal device receives the first message, or it can be understood as the most recent BCCH modification cycle boundary after the terminal device receives the first message. For ease of understanding, let's use... Figure 7A Taking this as an example, if the terminal device receives the aforementioned first message at time T4, and the aforementioned first message includes first indication information and second indication information, then the terminal device can obtain the updated system information as early as time T2.

[0207] Therefore, the terminal device obtains the updated system information no earlier than the BCCH modification cycle boundary and no later than the eDRX system message acquisition boundary. In other words, the terminal device will obtain the updated system information at or after the BCCH modification cycle boundary. For ease of understanding, we will still use... Figure 7A Let's take an example. If the first message received by the terminal device includes the aforementioned first indication information and second indication information, then the terminal device can determine that the time when it received the first message is within the nth BCCH modification cycle (i.e., the range from time T1 to time T2). Furthermore, the access network device will send updated system information to the terminal device at the beginning of the (n+1)th BCCH modification cycle (i.e., after time T2). At this time, the terminal device can determine that it can obtain the updated system information at time T2. However, the terminal device has not yet determined the time interval between the current time and time T2. Therefore, the terminal device needs to calculate the exact location of time T2, which can also be understood as calculating the time difference between the time when the terminal device received the first message and time T2, i.e., the time difference between time T4 and time T2. When the terminal device determines the exact location of time T2, it can obtain the updated system information between time T2 and time T3. Therefore, the range of the updated system information that can be obtained is [T2, T3].

[0208] In this embodiment, since the terminal device can obtain updated system information at the BCCH modification cycle boundary, which is generally earlier than the eDRX system message acquisition boundary, this embodiment advances the scope within which the terminal device can obtain updated system information compared to existing technologies that require obtaining updated system information only after the eDRX system message acquisition boundary. This improves the flexibility of the terminal device in obtaining updated system information. Furthermore, compared to existing technologies that require checking the validity of system information before access and obtaining updated system information when the system information becomes invalid, this embodiment helps to shorten the latency introduced by the terminal device in obtaining updated system information before access.

[0209] 602b. The terminal device immediately obtains updated system information.

[0210] In this embodiment, when the first message includes first indication information but not second indication information, the terminal device immediately obtains updated system information.

[0211] For ease of understanding, Figure 7B Let's take an example. If the first message received by the terminal device only includes the aforementioned first indication information but not the second indication information, then the terminal device can determine that the time when it received the first message is later than the start position of the (n+1)th BCCH modification cycle (i.e., after time T2). For example, the terminal device receives the first message at time T5. At this time, the terminal device can immediately obtain the updated system information. Optionally, the terminal device can obtain the updated system information between time T5 and time T3. Therefore, the range of updated system information that the terminal device may obtain is [T5, T3].

[0212] In this embodiment, since the terminal device can obtain updated system information as early as possible based on the aforementioned first message, in addition to improving the flexibility of the terminal device in obtaining updated system information, it can further shorten the latency caused by the terminal device obtaining updated system messages before accessing the network.

[0213] 602c. The terminal device obtains updated system information after the first offset time since receiving the first message.

[0214] The first indication information is the first offset duration; or, the first message includes the first offset duration in addition to the aforementioned first indication information or second indication information.

[0215] When the first indication information is a first offset duration, the terminal device obtains the updated system information after receiving the first offset duration in the first message. Figure 7C For example, if the terminal device receives the first message at time T6 and indicates a first offset duration, then the terminal device can obtain the updated system information at the first offset duration after time T6 (i.e., time T7). This can also be understood as the terminal device being able to obtain the updated system information as early as the first offset duration of the aforementioned first message (i.e., time T7).

[0216] In addition to the first offset duration, the first message may also include at least one of the aforementioned indication information.

[0217] Optionally, the first message includes first indication information, second indication information, and a first offset duration. Since the terminal device obtains updated system information at the BCCH modification cycle boundary when the first message includes the aforementioned first and second indication information (see step 602a above for details), the first offset duration is the duration between the moment the terminal device receives the first message and the BCCH modification cycle boundary. Figure 7C For example, the first offset duration is the time between time T4 and time T2. In this implementation, the terminal device can directly determine the earliest time when it can obtain updated system information based on the first offset time, without having to perform further calculations. This helps reduce the computational load on the terminal device and saves its energy consumption.

[0218] Optionally, the first message includes first indication information and a first offset duration, but does not include second indication information. In this case, the terminal device obtains the updated system information at the moment corresponding to the first offset duration after receiving the first message. Specifically, the first offset duration can be 0, in which case the terminal device can immediately obtain the updated system information. In this embodiment, the timing of the terminal device obtaining the updated system information can be flexibly controlled by adjusting the first offset duration, which is beneficial to improving the flexibility of the terminal device in obtaining the updated system information and reducing the latency of the terminal device accessing the cell.

[0219] It should be understood that the terminal device can execute any one of the aforementioned steps 602a, 602b, and 602c. The terminal device can also execute the aforementioned steps 602a and 602c simultaneously; or, the terminal device can execute the aforementioned steps 602b and 602c simultaneously, and the specifics are not limited here.

[0220] Based on the foregoing embodiments, for a single system information change, the access network device may send the aforementioned first message multiple times consecutively. Consequently, the terminal device may receive multiple first messages, potentially mistaking this for multiple system information changes and thus repeatedly acquiring updated system information, leading to unnecessary power consumption. In some optional implementations, the aforementioned first message may further include third indication information, used to indicate whether the updated system information has changed. Optionally, this third indication information may be carried in a short message. For example, setting 1 bit in the short message: if the bit in the currently received third indication information is not flipped compared to the bit in the previously received third indication information, the terminal device can determine that the third indication information indicates the previous system information modification, or that the terminal device has received a duplicate first message. If the bit in the currently received third indication information has flipped compared to the bit in the previously received third indication information, the terminal device will acquire the updated system information based on the aforementioned first message. This implementation helps prevent the terminal device from repeatedly acquiring the same system information, thus avoiding power consumption.

[0221] like Figure 8 As shown, this embodiment provides a structural schematic diagram of another communication device 80. It should be understood that the aforementioned... Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The terminal device in the corresponding method embodiment can be based on this embodiment. Figure 8 The structure of the communication device 80 shown.

[0222] The communication device 80 includes at least one processor 801, at least one memory 802, and at least one transceiver 803. The processor 801, memory 802, and transceiver 803 are connected together. Optionally, the communication device 80 may further include an input device 805, an output device 806, and one or more antennas 804. The antennas 804 are connected to the transceiver 803, and the input device 805 and output device 806 are connected to the processor 801.

[0223] In this embodiment, the memory 802 is mainly used to store software programs and data. The memory 802 can exist independently and be connected to the processor 801. Optionally, the memory 802 can be integrated with the processor 801, for example, integrated within one or more chips. The memory 802 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 801. The various types of computer program code being executed can also be considered as drivers for the processor 801. It should be understood that in this embodiment... Figure 8 Only one memory and one processor are shown; however, in practical applications, the communication device 80 may have multiple processors or multiple memories, which is not limited here. Furthermore, the memory 802 may also be referred to as a storage medium or storage device, etc. The memory 802 may be a storage element located on the same chip as the processor, i.e., an on-chip storage element, or it may be a separate storage element; this embodiment does not limit the specific choice.

[0224] In this embodiment, the transceiver 803 can be used to support the reception or transmission of radio frequency signals between the communication device 80 and the access network device. The transceiver 803 can be connected to the antenna 804. The transceiver 803 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 804 can receive radio frequency signals. The receiver Rx of the transceiver 803 is used to receive the radio frequency signals from the antennas 804, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 801 so that the processor 801 can perform further processing on the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 803 is also used to receive the modulated digital baseband signals or digital intermediate frequency signals from the processor 801, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 804. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of the downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of the upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0225] It should be understood that the aforementioned transceiver 803 can also be referred to as a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit used to implement the receiving function can be regarded as the receiving unit, and the device in the transceiver unit used to implement the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be referred to as a receiver, input port, receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit, etc.

[0226] The processor 801 can be a baseband processor or a central processing unit (CPU), and the baseband processor and CPU can be integrated together or separate. The processor 801 can be used to implement various functions for the terminal device, such as processing communication protocols and communication data, or controlling the entire terminal device, executing software programs, and processing data from software programs; or assisting in completing computational processing tasks, such as graphics processing or audio processing; or the processor 801 can be used to implement one or more of the above functions.

[0227] Furthermore, the output device 806 communicates with the processor 801 and can display information in a variety of ways, which are not limited here.

[0228] Specifically, in the communication device 80, the transceiver 803 can receive a first parameter from the access network device; it can also listen to paging downlink control information from the access network device and receive paging messages based on the first parameter.

[0229] Specifically, in the communication device 80, the transceiver 803 can listen for paging downlink control information from the access network device and receive paging messages within the target PTW; or, within the target eDRX cycle, listen for paging downlink control information from the access network device and receive paging messages.

[0230] Specifically, in the communication device 80, the transceiver 803 can receive a first message from the access network device. The processor 801 can obtain updated system information at the BCCH modification cycle boundary; or, the processor 801 can obtain updated system information immediately; or, the processor 801 can obtain the system information after the first offset time after receiving the first message.

[0231] like Figure 9 As shown, this embodiment provides a structural schematic diagram of a communication device 90. It should be understood that the aforementioned... Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The access network device in the corresponding method embodiment can be based on this embodiment. Figure 9 The structure of the communication device 90 shown is illustrated. It should also be understood that when subsequent evolved access network devices or base stations execute the methods involved in the embodiments of this application, the subsequent evolved access networks or base stations can also adopt the methods described in this embodiment. Figure 9 The structure of the communication device 90 shown.

[0232] The communication device 90 includes at least one processor 901, at least one memory 902, at least one transceiver 903, at least one network interface 905, and one or more antennas 904. The processor 901, memory 902, transceiver 903, and network interface 905 are connected via a connection device, and the antenna 904 is connected to the transceiver 903. The aforementioned connection device may include various interfaces, transmission lines, or buses, etc., and this embodiment does not limit its scope.

[0233] The aforementioned network interface 905 is used to enable the communication device 90 to connect with other communication devices through a communication link. Specifically, the network interface 905 may include a network interface between the communication device 90 and a core network element, such as an S1 interface; the network interface 905 may also include a network interface between the communication device 90 and other network devices (such as other access network devices or core network elements), such as an X2 or Xn interface.

[0234] The transceiver 903, memory 902, and antenna 904 can be referenced. Figure 8 The relevant descriptions of the transceiver 803, memory 802, and antenna 804 in the corresponding embodiments will not be repeated here.

[0235] Furthermore, the aforementioned processor 901 is primarily used for processing communication protocols and communication data, controlling the entire network device, executing software programs, and processing software program data, for example, to support the communication device 90 in performing the actions described in the foregoing embodiments. The communication device 90 may include a baseband processor and a central processing unit (CPU), wherein the baseband processor is primarily used for processing communication protocols and communication data, and the CPU is primarily used for controlling the entire communication device 90, executing software programs, and processing software program data. Figure 9 The processor 901 can integrate the functions of a baseband processor and a central processing unit. Those skilled in the art will understand that the baseband processor and the central processing unit can also be independent processors interconnected via technologies such as buses. Those skilled in the art will understand that the communication device 90 can include multiple baseband processors to adapt to different network standards, and the communication device 90 can include multiple central processing units to enhance its processing capabilities. The various components of the communication device 90 can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The central processing unit can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, with the processor executing the software program to implement the baseband processing function.

[0236] Specifically, in the communication device 90, the processor 901 can configure a first parameter for the terminal device, wherein the first parameter is used to adjust the paging time window (PTW) parameter and / or extend the discontinuous reception (eDRX) period of the terminal device; the transceiver 903 can send a paging message to the terminal device according to the first parameter.

[0237] For example, the transceiver 903 can send the first parameter to the core network equipment.

[0238] For example, the transceiver 903 can send the aforementioned first message to the terminal device.

[0239] The methods for accessing the network device in the above embodiments can be referred to for the rest, and will not be repeated here.

[0240] like Figure 10As shown, this embodiment provides another communication device 100, which can be a terminal device or a chip in a terminal device. The communication device 100 includes a transceiver unit 1001 and a processing unit 1002.

[0241] like Figure 11 As shown, this embodiment provides another communication device 110, which can be an access network device or a chip in an access network device. The communication device 110 includes a transceiver unit 1101 and a processing unit 1102.

[0242] Wherein, when the communication device 100 is a terminal device or a user device, and when the communication device 110 is an access network device or a base station, the transceiver unit 1001 and the transceiver unit 1101 can be a transmitting unit or a transmitter when sending information, and a receiving unit or a receiver when receiving information. The aforementioned transceiver unit can be a transceiver, and this transceiver, transmitter, or receiver can be a radio frequency circuit. When the terminal device or user device includes a storage unit, the storage unit is used to store computer instructions. The processor is communicatively connected to the memory, and the processor executes the computer instructions stored in the memory, causing the terminal device and the access network device to perform... Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The corresponding embodiments involve methods. Furthermore, the aforementioned processing unit 1002 and processing unit 1102 can be a general-purpose central processing unit (CPU), microprocessor, digital signal processor (DSP), or microcontroller unit (MCU). This processor can be a standalone semiconductor chip or integrated with other circuits into a single semiconductor chip. For example, it can form a system-on-a-chip (SoC) with other circuits (such as encoding / decoding circuits, hardware acceleration circuits, or various bus and interface circuits), or it can be integrated as a built-in processor within an application-specific integrated circuit (ASIC).

[0243] When the communication device 100 is a chip in a terminal device, and when the communication device 110 is a chip in an access network device, the transceiver unit 1001 and transceiver unit 1101 can be input and / or output interfaces, pins, or circuits, etc. Furthermore, the aforementioned processing unit 1002 can be a processor in the chip of the terminal device, and the processing unit 1102 can be a processor in the chip of the access network device. This processor can execute computer execution instructions stored in the storage unit to cause the chip in the terminal device and the chip in the access network device to perform... Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The corresponding embodiments involve methods. Optionally, the storage unit is a storage unit within the chip, such as a register, cache, etc., or it can be a storage unit located outside the chip within the terminal device. For example, read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, random access memory (RAM), etc.

[0244] It should be understood that the aforementioned terminal device may contain functional units (means) corresponding to the steps of the terminal device's method or process, and the aforementioned access network device may contain functional units corresponding to the steps of the access network device's method or process. One or more of the above modules or units may be implemented in software, hardware, or a combination of both. When any of the above modules or units is implemented in software, the software exists as computer program instructions and is stored in memory, and a processor can be used to execute the program instructions to implement the above method or process.

[0245] According to the method provided in the embodiments of this application, this application also provides a communication system, which includes a terminal device and an access network device. The structure of the terminal device can be referred to the foregoing. Figure 8 The communication device 80 in the corresponding embodiment; the structure of the access network device can be referred to the foregoing. Figure 9 The corresponding embodiment is the communication device 90. Furthermore, when the aforementioned terminal device is a chip and the aforementioned access network device is a chip, the chip within the terminal device can be referred to the aforementioned... Figure 10 The communication device 100 in the corresponding embodiment; the chip in the access network device can be referred to in the foregoing. Figure 11 The corresponding embodiment is the communication device 110.

[0246] In implementation, each step of the above method can be completed by integrated logic circuits in the processor hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here. It should also be understood that the terms "first," "second," "third," "fourth," and various numerical designations used herein are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0247] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0248] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0249] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0250] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A system information updating method, characterized in that, include: The terminal device receives a first message from the access network device. The first message includes first indication information and third indication information. The first indication information is used to instruct the terminal device to obtain updated system information after a first offset duration. The first offset duration is the duration between the time when the terminal device receives the first message and the Broadcast Control Channel (BCCH) modification period boundary or a preset value. The BCCH modification period boundary refers to the nearest BCCH modification period boundary after the terminal device receives the first message. The third indication information carries bits. If the bits are flipped, the third indication information is used to indicate that the system information has changed, and the terminal device obtains the updated system information according to the first message.

2. The method according to claim 1, characterized in that, The first indication information is the first offset duration; or, the first message may also include the first offset duration. The method further includes: The terminal device obtains the updated system information after receiving the first offset time of the first message.

3. The method according to any one of claims 1 to 2, characterized in that, The first message also includes a second instruction message. The first indication information is used to indicate the modification of the BCCH to the first terminal device, and the extended discontinuous reception eDRX period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate the modification of the BCCH to the second terminal device, which does not include terminal devices whose eDRX period is longer than the BCCH modification period.

4. A system information updating method, characterized in that, include: The access network device sends a first message to the terminal device. The first message includes first indication information and third indication information. The first indication information is used to instruct the terminal device to obtain updated system information after a first offset duration. The first offset duration is the duration between the time when the terminal device receives the first message and the Broadcast Control Channel (BCCH) modification period boundary or a preset value. The BCCH modification period boundary refers to the nearest BCCH modification period boundary after the terminal device receives the first message. The third indication information carries bits. If the bits are flipped, the third indication information is used to indicate that the system information has changed, so that the terminal device can obtain the updated system information according to the first message.

5. The method according to claim 4, characterized in that, The first indication information is the first offset duration; or, the first message may also include the first offset duration.

6. The method according to any one of claims 4 to 5, characterized in that, The first message also includes a second instruction message. The first indication information is used to indicate the modification of the BCCH to the first terminal device, and the extended discontinuous reception eDRX period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate the modification of the BCCH to the second terminal device, which does not include terminal devices whose eDRX period is longer than the BCCH modification period.

7. A communication device, applied to a terminal device, characterized in that, include: The transceiver unit is used to receive a first message from an access network device. The first message includes first indication information and third indication information. The first indication information is used to instruct the terminal device to obtain updated system information after a first offset duration. The first offset duration is the duration between the time when the terminal device receives the first message and the Broadcast Control Channel (BCCH) modification period boundary, or a preset value. The BCCH modification period boundary refers to the nearest BCCH modification period boundary after the terminal device receives the first message. The third indication information carries bits. If the bits are flipped, the third indication information is used to indicate that the system information has changed, so that the terminal device obtains the updated system information according to the first message.

8. The communication device according to claim 7, characterized in that, The first indication information is the first offset duration; or, the first message may also include the first offset duration. The transceiver unit is further configured to obtain the updated system information after receiving the first offset time of the first message.

9. The communication device according to any one of claims 7 to 8, characterized in that, The first message also includes a second instruction message. The first indication information is used to indicate the modification of the BCCH to the first terminal device, and the extended discontinuous reception eDRX period of the first terminal device is longer than the BCCH modification period. The second indication information is used to indicate the modification of the BCCH to the second terminal device, which does not include terminal devices whose eDRX period is longer than the BCCH modification period.

10. A communication device, characterized in that, include: The transceiver unit is used to send a first message to a terminal device. The first message includes first indication information and third indication information. The first indication information is used to instruct the terminal device to obtain updated system information after a first offset time. The first offset time is the time between the moment when the terminal device receives the first message and the Broadcast Control Channel (BCCH) modification period boundary or a preset value. The BCCH modification period boundary refers to the nearest BCCH modification period boundary after the terminal device receives the first message. The third indication information carries bits. If the bits are flipped, the third indication information is used to indicate that the system information has changed, so that the terminal device can obtain the updated system information according to the first message.

11. The communication device according to claim 10, characterized in that, The first indication information is the first offset duration; or, the first message may also include the first offset duration.

12. The communication device according to any one of claims 10 to 11, characterized in that, The first indication information is used to indicate the modification of the BCCH to the first terminal device, and the extended discontinuous reception eDRX period of the first terminal device is longer than the BCCH modification period. The second instruction information is used to instruct the second terminal device to modify the BCCH, wherein the second terminal device does not include terminal devices whose eDRX period is longer than the BCCH modification period.

13. A communication device, characterized in that, include: A processor coupled to a memory for storing a program or instructions which, when executed by the processor, cause the device to perform the method as described in any one of claims 1 to 3, or the method as described in any one of claims 4 to 6.

14. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed, they cause the computer to perform the method as described in any one of claims 1 to 3, or the method as described in any one of claims 4 to 6.

15. A chip, characterized in that, include: A processor coupled to a memory for storing programs or instructions that, when executed by the processor, cause a device to perform the method as described in any one of claims 1 to 6.

16. A communication system comprising the communication device as described in any one of claims 7 to 9 and the communication device as described in any one of claims 10 to 12.

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