Energy-saving information notification method and system

Abstract

The invention discloses an energy-saving information notification method and system. The method comprises: a first base station control plane entity sending a first core network request message to a core network, the first core network request message being used for notifying a core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration and a small data transmission SDT configuration; a second core network notification message sent by the core network is received, and the second core network notification message is at least used for indicating the cache number borne by the first base station control plane entity SDT; and sending the paging message to the first base station separation entity and / or a second base station adjacent to the first base station. According to the method and the device, the technical problem that a core network cannot determine whether the anchor point base station of the terminal supports the SDT function due to the fact that the anchor point base station does not inform whether the terminal supports the SDT or not when the terminal enters the inactive state at present is solved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to an energy-saving information notification method and system. Background Art

[0002] The current 3GPP (3rd Generation Partnership Project) Rel-17 version of the protocol cannot meet the design requirements of downlink small data packets for the extended discontinuous reception mode (eDRX). For example, when the terminal enters the inactive state, the anchor base station does not notify the access and mobility management function (AMF) whether the terminal supports SDT (small data transmission), resulting in technical problems such as the core network being unable to determine whether the anchor base station of the terminal supports the SDT function.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present application provide an energy-saving information notification method and system to at least solve the technical problem that the core network cannot determine whether the anchor base station of the terminal supports the SDT function because the anchor base station does not notify the access and mobility management function AMF whether the terminal supports SDT when the terminal enters an inactive state.

[0005] According to one aspect of an embodiment of the present application, a method for notifying energy-saving information is provided, which is applied to a first base station control plane entity, including: the first base station control plane entity sends a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; receiving a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity; sending a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

[0006] Optionally, the method also includes: when the first base station control plane entity determines that the terminal device needs to return to an inactive state and needs to configure downlink small data packet transmission SDT and / or extended discontinuous reception mode eDRX, the first base station control plane entity forwards the radio resource control RRC release message to the terminal device through the first base station separation entity.

[0007] Optionally, the RRC release message includes: downlink small data transmission configuration and / or eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

[0008] Optionally, the method also includes: the first base station control plane entity sends a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a list of small data transmission data bearers SDT DRB to be suspended, and the list of small data transmission data bearer SDT DRB includes indication information that at least one DRB is configured as SDT.

[0009] Optionally, the method also includes: when the first base station user plane entity determines the data bearer DRB configured as SDT to be in a suspended state based on the request message within the first base station, the first base station control plane entity receives a first base station response message returned by the first base station user plane entity, wherein the first base station response message is used to notify the first base station control plane entity of the configuration result.

[0010] Optionally, the first base station control plane entity sends a first core network request message to the core network, including: the first base station control plane entity notifies the core network control plane entity terminal device to configure eDRX configuration in an inactive state through the first core network request message, wherein the eDRX configuration includes at least one of the following: a paging cycle of inactive eDRX and a time window of inactive eDRX; and, when both the first base station and the terminal device support SDT, instructing the core network control plane entity terminal device to configure SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with SDT and / or quality of service flow QoS flow identifiers.

[0011] Optionally, receiving a second core network notification message sent by the core network includes: the first base station control plane entity receives the second core network notification message, wherein the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0012] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity and size of all SDT bearers.

[0013] Optionally, when the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

[0014] Optionally, the second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

[0015] Optionally, the method also includes: the first base station control plane entity determines whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and generates a first base station internal paging message when it is determined that the user has configured the eDRX configuration, wherein the first base station internal paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0016] Optionally, the method also includes: the first base station control plane entity sends the first base station internal paging message to the first base station separation entity, wherein the first base station separation entity is used to determine the paging time sent to the terminal device according to the inactive eDRX paging cycle and the inactive eDRX time window after receiving the first base station internal paging message, and determine the scheduling priority of the paging message according to the paging priority indication information PPI, and generate an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0017] Optionally, the method also includes: the first base station control plane entity sends an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, core network signaling indication information.

[0018] Optionally, the second base station is used to determine whether to send an RRC paging message based on a downlink small data packet based on the downlink SDT indication information and the size of the cache of the SDT bearer when receiving an inter-base station paging message, and determine the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window, and determine the scheduling priority of the paging message based on the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

[0019] Optionally, the method also includes: when the first base station control plane entity receives an RRC recovery request message sent by the terminal device, and the RRC recovery request message carries a cause value MT-SDT, the first base station control plane entity sends a second base station request message to the first base station separation entity, wherein the second base station request message is used to instruct the first base station separation entity to restore the configuration of SDT DRB resources and the F1 interface between the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

[0020] Optionally, the method also includes: when the terminal device sends an RRC recovery request message to the second base station, and the RRC recovery request message carries a cause value MT-SDT, the first base station control plane entity determines whether it is necessary to forward the user context to the second base station based on a first inter-base station message sent by the second base station, wherein the first inter-base station message carries downlink SDT indication information.

[0021] Optionally, the method also includes: when it is determined that there is no need to forward the user context to the second base station or the terminal device still resides in the first base station, the control plane entity of the first base station notifies the user plane entity of the first base station to restore all SDT DRB bearers through a request message of the interface within the third base station, wherein the user plane entity of the first base station is used to notify the configuration status of the control plane entity of the first base station through a response message of the interface within the third base station after completing the SDT DRB recovery.

[0022] Optionally, the method also includes: when it is determined that the user context needs to be forwarded to the second base station, the first base station control plane entity sends a path switching message to the core network control plane entity, wherein the path switching message is used to notify the core network control plane entity to change the receiving address of subsequent data or signaling.

[0023] Optionally, the method also includes: when the core network sends cached data and signaling to the first base station, the first base station control plane entity forwards the received data and / or signaling to the terminal device through the first base station separation entity.

[0024] Optionally, when the core network sends cached data and signaling to the second base station, the second base station is used to send the received signaling and / or data to the terminal device.

[0025] According to one aspect of an embodiment of the present application, another energy-saving information notification method is also provided, which is applied to a core network control plane entity, including: the core network control plane entity receives a first core network request message sent by a first base station control plane entity, and determines, based on the first core network request message, that the terminal device is configured in an inactive state with at least one of the following: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; and sends a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

[0026] Optionally, the first core network request message is used to instruct the core network control plane entity terminal device to configure eDRX configuration in an inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of an inactive eDRX and a time window of an inactive eDRX.

[0027] Optionally, when both the first base station and the terminal device support SDT, the first core network request message is also used to instruct the core network control plane entity terminal device to configure the SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

[0028] Optionally, the method includes: upon receiving a first core network request message sent by a first base station control plane entity, the core network control plane entity saves the eDRX configuration and SDT configuration of the terminal device, and determines that the terminal device enters a non-idle state using eDRX.

[0029] Optionally, the method also includes: the core network control plane entity sending the terminal device identifier, eDRX configuration and SDT configuration to the core network user plane entity.

[0030] Optionally, the method also includes: when downlink data arrives at the core network user plane entity, the core network control plane entity receives the bearer information sent by the core network user plane entity, wherein the bearer information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0031] Optionally, sending a second core network notification message to the first base station control plane entity includes: upon receiving the bearer information sent by the core network user plane entity and / or receiving the NAS signaling message, the core network control plane entity generates a second core network notification message, and sends the second core network notification message to the first base station control plane entity, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0032] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity size of all SDT bearers.

[0033] Optionally, when the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

[0034] Optionally, the method also includes: the core network control plane entity determines the paging priority indication information PPI, channel allocation and preemption priority based on the contract information or configuration of the terminal device, and adds the paging priority indication information PPI, allocation and preemption priority to the second core network notification message.

[0035] According to one aspect of an embodiment of the present application, another energy-saving information notification method is also provided, which is applied to a first base station separation entity, including: the first base station separation entity receives a first base station intra-paging message sent by a first base station control plane entity, wherein the first base station intra-paging message is generated by the first base station control plane based on a second core network notification message sent by a received core network, and the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

[0036] Optionally, the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0037] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity and size of all SDT bearers.

[0038] Optionally, when the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

[0039] Optionally, the second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

[0040] Optionally, the paging message within the first base station is generated when the first base station control plane entity determines that the user has configured the eDRX configuration based on the first notification information and the terminal device identifier, and includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0041] Optionally, the first base station separation entity determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window in the paging message within the first base station, determines the scheduling priority of the paging message based on the paging priority indication information PPI, and generates an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0042] Optionally, the first base station separation entity receives a second base station request message sent by the first base station control plane entity, wherein the second base station request message is triggered when the first base station control plane entity receives an RRC recovery request message sent by the terminal device and the RRC recovery request message carries a cause value MT-SDT.

[0043] Optionally, the first base station separation entity restores the configuration of the SDT DRB resources and the F1 interface between the first base station and the control plane entity according to the request message in the second base station.

[0044] Optionally, when the core network sends cached data and signaling to the first base station, the first base station separation entity forwards the received data and / or signaling sent by the first base station control plane entity to the terminal device.

[0045] According to one aspect of an embodiment of the present application, an energy-saving information notification device is also provided, including: a notification module, used to send a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: extended discontinuous reception mode eDRX configuration, small data transmission SDT configuration; a receiving module, used to receive a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the first base station control plane entity SDT; a paging module, used to send a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

[0046] Optionally, the notification module is used to notify the core network control plane entity terminal device to configure the eDRX configuration in an inactive state through a first core network request message, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX; and, when both the first base station and the terminal device support SDT, instruct the core network control plane entity terminal device to configure the SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or service quality flow QoS flow identifiers.

[0047] Optionally, the receiving module is used to receive a second core network notification message, wherein the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0048] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity and size of all SDT bearers.

[0049] According to one aspect of an embodiment of the present application, another energy-saving information notification device is also provided, including: a notification receiving module, used to receive a first core network request message sent by a first base station control plane entity, and based on the first core network request message, determine that the terminal device is configured in an inactive state with at least one of the following: extended discontinuous reception mode eDRX configuration, small data transmission SDT configuration; a message sending module, used to send a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

[0050] Optionally, the notification receiving module is used to save the eDRX configuration and SDT configuration of the terminal device when receiving the first core network request message sent by the first base station control plane entity, determine that the terminal device enters a non-idle state using eDRX, and send the terminal device identification, eDRX configuration and SDT configuration to the core network user plane entity.

[0051] Optionally, the notification receiving module is used to receive the bearer information sent by the core network user plane entity when the downlink data arrives at the core network user plane entity, wherein the bearer information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0052] Optionally, the message sending module is used to generate a second core network notification message and send the second core network notification message to the first base station control plane entity upon receiving bearer information sent by the core network user plane entity and / or receiving a NAS signaling message, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0053] According to one aspect of an embodiment of the present application, there is also provided an energy-saving information notification system, including: a first base station control plane entity and a core network control plane entity, wherein the first base station control plane entity sends a first core network request message to the core network control plane entity, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; the core network control plane entity sends a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity; the first base station control plane entity sends a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

[0054] Optionally, when the first base station control plane entity determines that the terminal device needs to return to an inactive state and configures downlink small data packet transmission SDT and extended discontinuous reception mode eDRX, the first base station control plane entity forwards the radio resource control RRC release message to the terminal device through the first base station separation entity.

[0055] Optionally, the RRC release message includes: downlink small data transmission configuration and eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

[0056] Optionally, the first base station control plane entity sends a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a list of small data transmission data bearers SDT DRB to be suspended, and the list of small data transmission data bearer SDT DRB includes indication information that at least one DRB is configured as SDT.

[0057] Optionally, upon receiving the request message within the first base station, the user plane entity of the first base station determines the data bearer DRB configured as SDT to be in a suspended state, and notifies the control plane entity of the first base station of the configuration result through a response message within the first base station.

[0058] Optionally, the first base station control plane entity notifies the core network control plane entity terminal device to configure eDRX configuration in an inactive state through a first core network request message, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX; and, when both the first base station and the terminal device support SDT, instructs the core network control plane entity terminal device to configure SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

[0059] Optionally, upon receiving the first core network request message sent by the first base station control plane entity, the core network control plane entity saves the eDRX configuration and SDT configuration of the terminal device, and determines that the terminal device enters a non-idle state using eDRX.

[0060] Optionally, the core network control plane entity sends the terminal device identification, eDRX and SDT configuration to the core network user plane entity.

[0061] Optionally, when downlink data arrives at the core network user plane entity, the core network user plane entity is used to cache the downlink data and send the corresponding bearer information to the core network control plane entity, wherein the bearer information includes: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0062] Optionally, upon receiving bearer information sent by the core network user plane entity and / or receiving a NAS signaling message, the core network control plane entity generates a second core network notification message and sends the second core network notification message to the first base station control plane entity, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0063] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity size of all SDT bearers.

[0064] Optionally, when the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

[0065] Optionally, the core network control plane entity determines the paging priority indication information PPI, channel allocation and preemption priority based on the subscription information or configuration of the terminal device, and adds the paging priority indication information PPI, channel allocation and preemption priority to the second core network notification message.

[0066] Optionally, the first base station control plane entity determines whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and when it is determined that the user has configured the eDRX configuration, sends a paging message within the first base station to the first base station separation entity, wherein the paging message within the first base station includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0067] Optionally, the first base station separation entity determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window in the paging message within the first base station, determines the scheduling priority of the paging message based on the paging priority indication information PPI, and generates an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0068] Optionally, the control plane entity of the first base station sends an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, and core network signaling indication information.

[0069] Optionally, the second base station determines whether to send an RRC paging message based on a downlink small data packet based on the downlink SDT indication information and the size of the cache of the SDT bearer in the inter-base station paging message, and determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window, and determines the scheduling priority of the paging message based on the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

[0070] Optionally, when the first base station control plane entity receives an RRC recovery request message sent by a terminal device, and the RRC recovery request message carries a cause value MT-SDT, the first base station control plane entity sends a second base station request message to the first base station separation entity, wherein the second base station request message is used to instruct the first base station separation entity to restore the configuration of SDT DRB resources and the F1 interface with the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

[0071] Optionally, when the terminal device sends an RRC recovery request message to the second base station and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity determines whether it is necessary to forward the user context to the second base station based on the first inter-base station message sent by the second base station, wherein the first inter-base station message carries downlink SDT indication information.

[0072] Optionally, when it is determined that there is no need to forward the user context to the second base station or the terminal device still resides in the first base station, the control plane entity of the first base station notifies the user plane entity of the first base station to restore all SDT DRB bearers through a request message of the interface within the third base station, wherein the user plane entity of the first base station is used to notify the configuration status of the control plane entity of the first base station through a response message of the interface within the third base station after completing the SDT DRB recovery.

[0073] Optionally, when it is determined that the user context needs to be forwarded to the second base station, the first base station control plane entity sends a path switching message to the core network control plane entity, wherein the path switching message is used to notify the core network control plane entity to change the receiving address of subsequent data or signaling.

[0074] Optionally, when the core network sends cached data and signaling to the first base station, the first base station control plane entity and / or the first base station user plane entity will forward the received data and / or signaling to the terminal device through the first base station separation entity.

[0075] Optionally, when the core network sends cached data and signaling to the second base station, the second base station is used to send the received signaling and / or data to the terminal device.

[0076] In an embodiment of the present application, a first base station control plane entity is used to send a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: extended discontinuous reception mode eDRX configuration, small data transmission SDT configuration; receive a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the first base station control plane entity SDT; send a paging message to the first base station separation entity and / or the second base station adjacent to the first base station, which solves the technical problem that the core network cannot determine whether the anchor base station of the terminal supports the SDT function because the current anchor base station does not notify the access and mobility management function AMF whether the terminal supports SDT when the terminal enters an inactive state. This solves the problem of terminal power consumption and signaling waste caused by the need to return to the connected state when transmitting small data packets in the eDRX state, and supports the ability to configure two states for the terminal at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0078] Figure 1It is a schematic diagram of a method flow for energy-saving information notification applied to a first base station control plane entity according to an embodiment of the present application;

[0079] Figure 2 It is a schematic diagram of a signaling interaction process when data is sent in an inactive state according to an embodiment of the present application;

[0080] Figure 3 It is a schematic diagram of a signaling process when downlink data arrives during an eDRX process provided according to an embodiment of the present application;

[0081] Figure 4 is a schematic diagram of a signaling process of SDT provided according to an embodiment of the present application;

[0082] Figure 5 It is a schematic diagram of a method flow for energy-saving information notification applied to a core network control plane entity according to an embodiment of the present application;

[0083] Figure 6 It is a schematic diagram of a method flow for energy-saving information notification applied to a first base station separation entity provided in an embodiment of the present application;

[0084] Figure 7 It is a structural schematic diagram of an energy-saving information notification device provided according to an embodiment of the present application;

[0085] Figure 8 is a structural diagram of another energy-saving information notification device provided according to an embodiment of the present application;

[0086] Fig. 9 It is a structural diagram of an energy-saving information notification system provided according to an embodiment of the present application;

[0087] Fig.10 It is a schematic diagram of an MT-SDT process supporting eDRX provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0088] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0089] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0090] As the main technology of the next generation of wireless networks, 5G has technical features such as supporting ultra-wideband and large connections. Compared with 4G, 5G introduces an inactive state, namely the "RRC_INACTIVE" state. In this state, the base station / UE (User Equipment) can choose to remain inactive without completely releasing the bearer established by RRC (Radio Resource Control) when there is no business data transmission. The suspension configuration Suspend Config can be carried in the RRC Release message. The introduction of this state is used to solve the transmission of small data packets and reduce the signaling overhead of the core network. When the UE is in the RRC_INACTIVE state, when the terminal receives a RAN (Radio Access Network) paging or RNA (RAN-based Notification Area) update or has uplink data to send, it will trigger the suspended RRC connection recovery. Before initiating the RRC connection recovery, the UE ensures that there is valid and up-to-date system information. When there is data to be sent in the inactive state, the signaling process between the terminal and the network is as follows Figure 2 As shown, the specific process is as follows:

[0091] 1) When the NG-RAN (Next Generation Radio Access Network) needs to send data (e.g. N1 NAS PDU and / or downlink user plane PDU) to a UE in the RRC_INACTIVE state, network-triggered connection recovery in the RRC_INAACTIVE procedure is used. In this procedure, the NG-RAN sends a RAN paging to the UE to trigger connection recovery in the RRC_INACTIVE procedure;

[0092] 2) The NG-RAN receives downlink data (e.g. N1 NAS PDU and / or user plane PDU) from a UE in RRC_INACTIVE state, the NG-RAN buffers the downlink data and triggers a RAN paging message. If the NG-RAN supports the paging cause indication feature for voice services, and if the UE context in the NG-RAN indicates that the UE supports the paging cause indication feature for voice services, then when it is detected that the downlink data triggering the RAN paging message is related to voice services, the NG-RAN shall provide the UE with a voice service indication in the RAN paging message;

[0093] 3) NG-RAN sends a RAN paging message to the UE;

[0094] 4) If the UE is in RRC_INACTIVE state, based on RAN paging and the UE decides to accept the paging, the UE initiates UE triggered connection recovery in the RRC_INACTIVE process.

[0095] In the Rel-17 stage, 3GPP proposed RedCap (Reduced Capability) terminals for the Internet of Things. In order to enhance the power-saving characteristics of such terminals, the standard has been carrying out relevant enhancement work. On the one hand, the data flow between the terminal and the network is usually intermittent or bursty; on the other hand, if the terminal keeps listening to network paging, it consumes a lot of power.

[0096] Based on this, in order to make the terminal more power-saving, the 5G R15 version introduces the DRX (Discontinuous Reception) mechanism for NR (New Radio). In the RRC_IDLE (idle state) and RRC_INACTIVE (inactive state), the terminal periodically monitors the PDCCH (Physical Downlink Control Channel) channel to receive paging messages, and enters the sleep state (turns off the receiver) for the rest of the time without monitoring paging, which can greatly reduce power consumption. In NR, the maximum DRX cycle in the RRC IDLE and RRC_INACTIVE states is 2.56 seconds.

[0097] The Rel-17 standard introduces eDRX, an extended DRX mechanism, which extends the DRX cycle in the RRC_IDLE state to 10485.76 seconds (about 3 hours) and the DRX cycle in the RRC_INACTIVE state to 10.24 seconds, so that the terminal sleeps longer, saves more power, and prolongs battery life. When there is data to be sent in the eDRX situation, the relevant signaling process is as follows Figure 3As shown, the process may be triggered by data, or may be triggered by the N1 process of SMF (Session management function) and UPF (User Plane Function).

[0098] The AMF determines whether the UE is reachable based on the stored eDRX cycle value for RRC_INACTIVE state provided in the NG-RAN. If the UE is not reachable, the AMF provides the estimated maximum waiting time in the response message based on the eDRX cycle value for RRC_INACTIVE in the AMF. If the UE is considered reachable, the Figure 3 as shown in step 2.

[0099] In the 5G network, the terminal can enter the INACTIVE state to reduce the power consumption of the terminal and reduce the signaling interaction process between the terminal and the core network, thereby improving the access delay of the terminal. In the solution before Rel-17, if there is a small data packet to be transmitted on the terminal side, it is still necessary to go through the RRC Resume process to complete the control plane establishment before sending and receiving the data packet. On the one hand, this method does not significantly improve the access delay. On the other hand, it causes the terminal to return to the inactive state after completing the transmission of one or more data packets. For periodic small data transmission, it still increases excessive signaling interaction between the terminal and the network.

[0100] To address the above issues, 3GPP has conducted research on Small Data Transmission (SDT) in Rel-17, with the goal of reducing the access delay of a terminal sending a small data packet when it is INACTIVE. Currently, the standard has determined to support data packet transmission based on Random Access Channel (RACH) and data packet transmission based on Configured Grant. The basic signaling process of SDT within a cell is as follows: Figure 4 As shown, after that, NG-RAN performs RAN paging to the UE. When the UE receives the RAN paging, the UE-triggered connection recovery process is started. NG-RAN notifies the core network. If there is downlink data arriving, the UPF triggers the downlink data delivery. At the same time, if there is a NAS (Non-Access-stratum) message, the AMF sends downlink signaling;

[0101] When eDRX is supported, the current specification has the following problems when using SDT to reduce the number of times the terminal returns to the connected state to reduce power consumption:

[0102] 1) The core network cannot determine whether the anchor base station of the terminal supports the SDT function: In the current specification, when the terminal enters the inactive state, the anchor base station needs to notify the AMF terminal through signaling that it supports eDRX, but does not notify whether it supports SDT. Therefore, from the perspective of the core network, it is not certain whether the anchor base station supports the SDT process, so it is impossible to determine whether the type of service needs to be distinguished in subsequent signaling;

[0103] 2) There are differences in the configuration of SDT bearers between the core network and the base station: On the base station side, SDT is configured according to the granularity of DRB (Data Radio Bearer), while on the core network side, the bearers are all configured at the granularity of PDU session. Therefore, it is difficult for the core network to determine which bearers are SDT bearers and perform corresponding cache calculations;

[0104] 3) The base station cannot determine whether the downlink data can trigger SDT: In the current specification, the data reaching indication message notified by the core network to the base station does not include the amount of cached data, so the terminal's anchor point and the current base station cannot trigger the arrival of the downlink small data packet based on valid information;

[0105] 4) The base station and the terminal do not need to return to the connected state: In the current eDRX process, Figure 3 As shown, both the base station and the terminal need to return to the connected state, but if SDT is additionally supported, there is no need to return to the connected state. Therefore, the current eDRX process is not suitable for supporting SDT scenarios, and signaling design needs to be redesigned;

[0106] Based on the above requirements and reasons, the current 3GPP Rel-17 protocol cannot meet the design requirements of downlink small data packets for eDRX, and needs to be enhanced through a new standardized method.

[0107] In order to solve the above problems, relevant solutions are provided in the embodiments of the present application to meet the needs of network deployment and optimization, which are described in detail below.

[0108] According to an embodiment of the present application, a method embodiment of energy-saving information notification is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0109] Figure 1 is a schematic diagram of a method flow for energy-saving information notification applied to a first base station control plane entity according to an embodiment of the present application, such as Figure 1 As shown, the method comprises the following steps:

[0110] Step S102, the first base station control plane entity sends a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration;

[0111] Step S104, receiving a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the first base station control plane entity SDT;

[0112] Step S106: Send a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

[0113] The following is the above Figure 1 The energy saving information notification method shown in is further introduced.

[0114] In some embodiments of the present application, the method also includes: when the first base station control plane entity determines that the terminal device needs to return to an inactive state and needs to configure downlink small data packet transmission SDT and / or extended discontinuous reception mode eDRX, the first base station control plane entity generates a wireless resource control RRC release message, and forwards the wireless resource control RRC release message to the terminal device through the first base station separation entity.

[0115] Among them, the RRC release message includes: downlink small data transmission configuration and / or eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

[0116] In some embodiments of the present application, the method also includes: the first base station control plane entity sends a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a list of small data transmission data bearers SDT DRB to be suspended, and the small data transmission data bearer SDT DRB list includes indication information that at least one DRB is configured as SDT.

[0117] After the first base station user plane entity receives the first base station internal request message, the first base station control plane entity determines the data bearer DRB configured as SDT to be in a suspended state based on the first base station internal request message, and receives the first base station internal response message returned by the first base station user plane entity, wherein the first base station internal response message is used to notify the first base station control plane entity of the configuration result.

[0118] In some embodiments of the present application, the first base station control plane entity sends a first core network request message to the core network, including: the first base station control plane entity notifies the core network control plane entity terminal device to configure eDRX configuration in an inactive state through the first core network request message, wherein the eDRX configuration includes at least one of the following: a paging cycle of inactive eDRX and a time window of inactive eDRX; and, when both the first base station and the terminal device support SDT, instructing the core network control plane entity terminal device to configure SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with SDT and / or quality of service flow QoS flow identifiers.

[0119] After receiving the first core network request message, the core network control plane entity saves the eDRX and SDT configurations of the terminal, and determines that the terminal enters a non-idle state using eDRX; and sends the terminal identifier, eDRX configuration, and SDT configuration information to the core network user plane entity;

[0120] After the downlink data arrives at the core network user plane entity, the user plane entity caches the downlink data and sends the relevant bearer information to the core network control plane entity, where the bearer related information includes: 5QI, QOS FlowID, PDUSession ID, SDT indicator of the cached bearer, and the cache quantity and size of all SDT bearers;

[0121] After receiving the bearer information sent by the core network user plane entity and / or receiving the signaling message from the NAS, the core network control plane entity generates a second core network notification message and sends it to the first base station control plane entity;

[0122] In some embodiments of the present application, receiving a second core network notification message sent by the core network includes: a first base station control plane entity receives a second core network notification message, wherein the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0123] The above-mentioned second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: 5G service quality identifier 5QI of the cached bearer, QoS flow identifier (QOS Flow ID), PDU session identifier (PDU Session ID), SDT indication information (SDT indicator, indicated by a Boolean value or enumeration value) and the cache quantity size of all SDT bearers.

[0124] When the core network control plane entity receives the bearer information and NAS signaling message, the cache size of the SDT bearer is the sum of the bearer cache size corresponding to the bearer information and the bearer cache size corresponding to the NAS signaling message. That is, when the NAS signaling and the bearer information sent by the core network user plane entity exist at the same time, the cache size of the SDT bearer needs to be superimposed with the bearer cache size of the signaling.

[0125] Optionally, the second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

[0126] After receiving the second core network notification message, the first base station control plane entity saves the first notification information and determines whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and generates a first base station internal paging message when it is determined that the user has configured the eDRX configuration, wherein the first base station internal paging message includes at least one of the following: paging priority indication information PPI (Paging Priority Indicator), downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0127] In some embodiments of the present application, the method also includes: the first base station control plane entity sends the first base station internal paging message to the first base station separation entity, wherein the first base station separation entity is used to determine the paging time sent to the terminal device according to the inactive eDRX paging cycle and the inactive eDRX time window after receiving the first base station internal paging message, and determine the scheduling priority of the paging message according to the paging priority indication information PPI, and generate an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0128] In some embodiments of the present application, the method also includes: the first base station control plane entity sends an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, core network signaling indication information.

[0129] When the second base station receives the inter-base station paging message, it determines whether to send an RRC paging message based on the downlink small data packet according to the downlink SDT indication information and the size of the cache of the SDT bearer, and determines the paging time to be sent to the terminal device according to the inactive eDRX paging cycle and the time window of the inactive eDRX, and determines the scheduling priority of the paging message according to the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

[0130] After receiving the paging message, the terminal sends an RRC resume request message (RRC Resume Request) to the first base station control plane entity or the second base station.

[0131] In some embodiments of the present application, the method also includes: when the first base station control plane entity receives an RRC resume request message (RRC Resume Request) sent by the terminal device, and the RRC resume request message carries a cause value MT-SDT, the first base station control plane entity sends a second base station request message to the first base station separation entity, wherein the second base station request message is used to instruct the first base station separation entity to resume configuring SDT DRB resources and the F1 interface with the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

[0132] In some embodiments of the present application, the method also includes: when the terminal device sends an RRC recovery request message to the second base station, and the RRC recovery request message carries a cause value MT-SDT, the first base station control plane entity determines whether it is necessary to forward the user context to the second base station based on the first inter-base station message sent by the second base station, wherein the first inter-base station message carries downlink SDT indication information.

[0133] When it is determined that there is no need to forward the user context to the second base station or the terminal device is still resident in the first base station, the control plane entity of the first base station notifies the user plane entity of the first base station through a request message of the interface within the third base station to restore all SDT DRB bearers, wherein the user plane entity of the first base station is used to notify the configuration status of the control plane entity of the first base station through a response message of the interface within the third base station after completing the SDT DRB recovery.

[0134] When it is determined that the user context needs to be forwarded to the second base station, the first base station control plane entity sends a path switching message to the core network control plane entity, wherein the path switching message is used to notify the core network control plane entity to change the receiving address of subsequent data or signaling.

[0135] Optionally, the method also includes: when the core network sends cached data and signaling to the first base station or the second base station, the first base station control plane entity forwards the received data and / or signaling to the terminal device through the first base station separation entity, or the second base station sends the received signaling and / or data to the terminal device.

[0136] Through the above steps, it is possible to support avoiding the signaling and power consumption overhead caused by having to return to the connected state when sending small data packets in the eDRX state, and standardize the interoperability behavior between the base station and the core network entity.

[0137] According to an embodiment of the present application, another method embodiment of energy-saving information notification is also provided. Figure 5 is a schematic diagram of a method flow for energy-saving information notification applied to a core network control plane entity according to an embodiment of the present application, such as Figure 5 As shown, the method comprises the following steps:

[0138] Step S502, the core network control plane entity receives a first core network request message sent by the first base station control plane entity, and determines, based on the first core network request message, that the terminal device is configured in an inactive state with at least one of the following: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration;

[0139] Step S504: Send a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

[0140] The following is the above Figure 5 The energy saving information notification method shown in is further introduced.

[0141] The above-mentioned first core network request message is used to instruct the core network control plane entity terminal device to configure the eDRX configuration in an inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX.

[0142] When both the first base station and the terminal device support SDT, the first core network request message is also used to instruct the core network control plane entity terminal device to configure the SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or service quality flow QoS flow identifiers.

[0143] In some embodiments of the present application, the method includes: upon receiving a first core network request message sent by a first base station control plane entity, the core network control plane entity saves the eDRX configuration and SDT configuration of the terminal device, and determines that the terminal device enters a non-idle state using eDRX.

[0144] Optionally, the method also includes: the core network control plane entity sending the terminal device identifier, eDRX configuration and SDT configuration to the core network user plane entity.

[0145] When downlink data arrives at the core network user plane entity, the core network control plane entity receives the bearer information sent by the core network user plane entity, wherein the bearer information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0146] When the core network control plane entity receives the bearer information sent by the core network user plane entity and / or receives the NAS signaling message, the core network control plane entity generates a second core network notification message and sends the second core network notification message to the first base station control plane entity, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0147] The above-mentioned second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0148] When the core network control plane entity receives the bearer information and NAS signaling message, the cache size of the SDT bearer is the sum of the bearer cache size corresponding to the bearer information and the bearer cache size corresponding to the NAS signaling message. That is, when the NAS signaling and the bearer information sent by the core network user plane entity exist at the same time, the cache size of the SDT bearer needs to be superimposed with the bearer cache size of the signaling.

[0149] In addition, the core network control plane entity can also determine the paging priority indication information PPI, channel allocation and preemption priority based on the contract information or configuration of the terminal device, and add the paging priority indication information PPI, allocation and preemption priority to the second core network notification message.

[0150] It should be noted that the energy-saving information notification method provided in this embodiment is similar to Figure 1 The energy-saving information notification method shown is a method embodiment corresponding to each other. Therefore, the relevant explanations and descriptions of the above-mentioned energy-saving information notification method are also applicable to the embodiments of the present application and will not be repeated here.

[0151] According to an embodiment of the present application, another method embodiment of energy-saving information notification is also provided. Figure 6 is a schematic diagram of a method flow for energy-saving information notification applied to a first base station separation entity provided in an embodiment of the present application, such as Figure 6 As shown, the method comprises the following steps:

[0152] In step 602, the first base station separation entity receives a first base station internal paging message sent by the first base station control plane entity, wherein the first base station internal paging message is generated by the first base station control plane based on a second core network notification message sent by the received core network, and the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

[0153] The following is the above Figure 6 The energy saving information notification method shown in is further introduced.

[0154] The above-mentioned second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, including at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0155] The second core network notification message includes the first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information and the cache quantity size of all SDT bearers.

[0156] When the core network control plane entity receives the bearer information and the NAS signaling message, the buffer quantity size of the SDT bearer is the sum of the bearer buffer quantity size corresponding to the bearer information and the bearer buffer quantity size corresponding to the NAS signaling message.

[0157] The second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

[0158] In some embodiments of the present application, the paging message within the first base station is generated when the control plane entity of the first base station determines that the user has configured the eDRX configuration based on the first notification information and the terminal device identifier, and includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0159] In some embodiments of the present application, the first base station separation entity determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window in the paging message within the first base station, determines the scheduling priority of the paging message based on the paging priority indication information PPI, and generates an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0160] In some embodiments of the present application, the first base station separation entity receives a second base station internal request message sent by the first base station control plane entity, wherein the second base station internal request message is triggered when the first base station control plane entity receives an RRC recovery request message sent by a terminal device, and the RRC recovery request message carries a cause value MT-SDT. And according to the second base station internal request message, the SDT DRB resource and the F1 interface with the first base station control plane entity are restored and configured.

[0161] In the case where the core network sends cached data and signaling to the first base station, the first base station separation entity forwards the received data and / or signaling sent by the first base station control plane entity to the terminal device.

[0162] It should be noted that the energy-saving information notification method provided in this embodiment is similar to Figure 1 , Figure 5 The energy-saving information notification method shown is a method embodiment corresponding to each other. Therefore, the relevant explanations and descriptions of the above-mentioned energy-saving information notification method are also applicable to the embodiments of the present application and will not be repeated here.

[0163] According to an embodiment of the present application, an embodiment of an energy-saving information notification device is also provided. Figure 7 Schematic diagram of the structure of an energy-saving information notification device provided according to an embodiment of the present application. Figure 7 As shown, the device comprises:

[0164] The notification module 70 is used to send a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration;

[0165] The receiving module 72 is used to receive a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the first base station control plane entity SDT;

[0166] The paging module 74 is configured to send a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

[0167] Optionally, the notification module 70 is used to forward the radio resource control RRC release message to the terminal device through the first base station separation entity when it is determined that the terminal device needs to return to an inactive state and needs to configure downlink small data packet transmission SDT and / or extended discontinuous reception mode eDRX.

[0168] Optionally, the RRC release message includes: downlink small data transmission configuration and / or eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

[0169] Optionally, the notification module 70 is used to send a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a list of small data transmission data bearers SDT DRB to be suspended, and the small data transmission data bearer SDT DRB list includes indication information that at least one DRB is configured as SDT.

[0170] Optionally, the notification module 70 is used to receive a first base station response message returned by the first base station user plane entity when the first base station user plane entity determines that the data bearer DRB configured as SDT is in a suspended state based on a request message within the first base station, wherein the first base station response message is used to notify the first base station control plane entity of the configuration result.

[0171] Optionally, the notification module 70 is used to notify the core network control plane entity terminal device to configure the eDRX configuration in an inactive state through a first core network request message, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX; and, when both the first base station and the terminal device support SDT, instruct the core network control plane entity terminal device to configure the SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or service quality flow QoS flow identifiers.

[0172] Optionally, the receiving module 72 is used to receive a second core network notification message, wherein the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0173] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity and size of all SDT bearers.

[0174] Optionally, when the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

[0175] Optionally, the second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

[0176] Optionally, the paging module 74 is used to determine whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and when it is determined that the user has configured the eDRX configuration, generate a first base station intra-paging message, wherein the first base station intra-paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0177] Optionally, the paging module 74 is used to send the paging message within the first base station to the first base station separation entity, wherein the first base station separation entity is used to determine the paging time sent to the terminal device according to the inactive eDRX paging cycle and the inactive eDRX time window after receiving the paging message within the first base station, and determine the scheduling priority of the paging message according to the paging priority indication information PPI, and generate an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0178] Optionally, the paging module 74 is used to send an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, and core network signaling indication information.

[0179] Optionally, the second base station is used to determine whether to send an RRC paging message based on a downlink small data packet based on the downlink SDT indication information and the size of the cache of the SDT bearer when receiving an inter-base station paging message, and determine the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window, and determine the scheduling priority of the paging message based on the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

[0180] Optionally, the paging module 74 is used to send a second base station request message to the first base station separation entity when the first base station control plane entity receives an RRC recovery request message sent by the terminal device and the RRC recovery request message carries a cause value MT-SDT, wherein the second base station request message is used to instruct the first base station separation entity to restore the configuration of SDTDR resources and the F1 interface between the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

[0181] Optionally, the paging module 74 is used to determine whether it is necessary to forward the user context to the second base station based on the first inter-base station message sent by the second base station when the terminal device sends an RRC recovery request message to the second base station and the RRC recovery request message carries a cause value MT-SDT, wherein the first inter-base station message carries downlink SDT indication information.

[0182] Optionally, the paging module 74 is used to notify the user plane entity of the first base station to restore all SDT DRB bearers through a third base station internal interface request message when it is determined that there is no need to forward the user context to the second base station or the terminal device is still resident in the first base station, wherein the first base station user plane entity is used to notify the first base station control plane entity of the configuration status through a third base station internal interface response message after completing the SDT DRB recovery.

[0183] Optionally, the paging module 74 is used to send a path switching message to the core network control plane entity when it is determined that the user context needs to be forwarded to the second base station, wherein the path switching message is used to notify the core network control plane entity to change the receiving address of subsequent data or signaling.

[0184] Optionally, the paging module 74 is used to forward the received data and / or signaling to the terminal device through the first base station separation entity when the core network sends the cached data and signaling to the first base station.

[0185] Optionally, when the core network sends cached data and signaling to the second base station, the second base station is used to send the received signaling and / or data to the terminal device.

[0186] It should be noted that the various modules in the above-mentioned energy-saving information notification device can be program modules (for example, a set of program instructions that implement a certain specific function) or hardware modules. For the latter, it can be expressed in the following forms, but is not limited to this: the expression form of each of the above-mentioned modules is a processor, or the functions of each of the above-mentioned modules are implemented by a processor.

[0187] It should be noted that the energy-saving information notification device provided in this embodiment can be used to execute Figure 1 The energy-saving information notification method shown, therefore, the relevant explanations and instructions on the above-mentioned energy-saving information notification method are also applicable to the embodiments of the present application and will not be repeated here.

[0188] According to an embodiment of the present application, an embodiment of an energy-saving information notification device is also provided. Figure 8 is a schematic diagram of the structure of another energy-saving information notification device provided according to an embodiment of the present application. Figure 8 As shown, the device comprises:

[0189] The notification receiving module 80 is used to receive a first core network request message sent by the first base station control plane entity, and determine, according to the first core network request message, that the terminal device is configured in an inactive state with at least one of the following: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration;

[0190] The message sending module 82 is used to send a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the cache quantity of the SDT bearer of the first base station control plane entity.

[0191] Optionally, the first core network request message is used to instruct the core network control plane entity terminal device to configure eDRX configuration in an inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of an inactive eDRX and a time window of an inactive eDRX.

[0192] Optionally, when both the first base station and the terminal device support SDT, the first core network request message is also used to instruct the core network control plane entity terminal device to configure the SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

[0193] Optionally, the notification receiving module 80 is used to save the eDRX configuration and SDT configuration of the terminal device when receiving the first core network request message sent by the first base station control plane entity, determine that the terminal device enters a non-idle state using eDRX, and send the terminal device identification, eDRX configuration and SDT configuration to the core network user plane entity.

[0194] Optionally, the notification receiving module 80 is used to send the terminal device identification, eDRX configuration and SDT configuration to the core network user plane entity.

[0195] Optionally, the notification receiving module is used to receive the bearer information sent by the core network user plane entity when the downlink data arrives at the core network user plane entity, wherein the bearer information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0196] Optionally, the message sending module 82 is used to generate a second core network notification message and send the second core network notification message to the first base station control plane entity upon receiving bearer information sent by the core network user plane entity and / or receiving a NAS signaling message, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0197] Optionally, the second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity size of all SDT bearers.

[0198] Optionally, when the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

[0199] Optionally, the message sending module 82 is used to determine the paging priority indication information PPI, channel allocation and preemption priority based on the contract information or configuration of the terminal device, and add the paging priority indication information PPI, allocation and preemption priority to the second core network notification message.

[0200] It should be noted that the various modules in the above-mentioned energy-saving information notification device can be program modules (for example, a set of program instructions that implement a certain specific function) or hardware modules. For the latter, it can be expressed in the following forms, but is not limited to this: the expression form of each of the above-mentioned modules is a processor, or the functions of each of the above-mentioned modules are implemented by a processor.

[0201] It should be noted that the energy-saving information notification device provided in this embodiment can be used to execute Figure 5 The energy-saving information notification method shown, therefore, the relevant explanations and instructions on the above-mentioned energy-saving information notification method are also applicable to the embodiments of the present application and will not be repeated here.

[0202] According to an embodiment of the present application, an embodiment of an energy-saving information notification system is also provided. Fig. 9 is a structural diagram of an energy-saving information notification system provided according to an embodiment of the present application, such as Fig. 9 As shown, it includes: a first base station control plane entity and a core network control plane entity, wherein:

[0203] The first base station control plane entity sends a first core network request message to the core network control plane entity, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration;

[0204] The core network control plane entity sends a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity;

[0205] The first base station control plane entity sends a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

[0206] Below Fig. 9 The process steps performed in the energy-saving information notification system shown in the figure are further introduced. Fig.10 is a schematic diagram of an MT-SDT process supporting eDRX provided according to an embodiment of the present application, such as Fig.10 As shown, the following steps are included:

[0207] Step 1: When the first base station control plane entity determines that the terminal device needs to return to an inactive state and configures downlink small data packet transmission SDT and extended discontinuous reception mode eDRX, the first base station control plane entity forwards the radio resource control RRC release message to the terminal device through the first base station separation entity.

[0208] The above-mentioned RRC release message includes: downlink small data transmission configuration and eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

[0209] Step 2: The first base station control plane entity sends a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a list of small data transmission data bearers SDT DRBs to be suspended, and the small data transmission data bearer SDT DRB list includes indication information that at least one DRB is configured as SDT.

[0210] Step 3: Upon receiving the request message within the first base station, the user plane entity of the first base station determines the data bearer DRB configured as SDT to be in a suspended state, and notifies the control plane entity of the first base station of the configuration result through a response message within the first base station.

[0211] Step 4: The first base station control plane entity notifies the core network control plane entity terminal device to configure eDRX configuration in an inactive state through a first core network request message, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX; and, when both the first base station and the terminal device support SDT, instructs the core network control plane entity terminal device to configure SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

[0212] Step 5: Upon receiving the first core network request message sent by the first base station control plane entity, the core network control plane entity saves the eDRX configuration and SDT configuration of the terminal device, and determines that the terminal device enters a non-idle state using eDRX.

[0213] Step 6: The core network control plane entity sends the terminal device identification, eDRX and SDT configuration to the core network user plane entity.

[0214] Step 7. When the downlink data arrives at the core network user plane entity, the core network user plane entity is used to cache the downlink data and send the corresponding bearer information to the core network control plane entity, where the bearer information includes: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0215] Step 8: Upon receiving the bearer information sent by the core network user plane entity and / or receiving the NAS signaling message, the core network control plane entity generates a second core network notification message and sends the second core network notification message to the first base station control plane entity, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

[0216] The above-mentioned second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

[0217] When the core network control plane entity receives the bearer information and the NAS signaling message, the buffer quantity size of the SDT bearer is the sum of the bearer buffer quantity size corresponding to the bearer information and the bearer buffer quantity size corresponding to the NAS signaling message.

[0218] Optionally, the core network control plane entity determines the paging priority indication information PPI, channel allocation and preemption priority based on the subscription information or configuration of the terminal device, and adds the paging priority indication information PPI, channel allocation and preemption priority to the second core network notification message.

[0219] Step 9, the first base station control plane entity determines whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and when it is determined that the user has configured the eDRX configuration, sends the first base station internal paging message to the first base station separation entity, wherein the first base station internal paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

[0220] In step 10, the first base station separation entity determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window in the paging message within the first base station, determines the scheduling priority of the paging message based on the paging priority indication information PPI, and generates an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

[0221] Step 11: The control plane entity of the first base station sends an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, and core network signaling indication information.

[0222] Step 12, the second base station determines whether to send an RRC paging message based on a downlink small data packet based on the downlink SDT indication information and the size of the cache quantity of the SDT bearer in the inter-base station paging message, and determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window, and determines the scheduling priority of the paging message based on the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

[0223] Step 13. When the first base station control plane entity receives the RRC recovery request message sent by the terminal device and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity sends a second base station request message to the first base station separation entity, wherein the second base station request message is used to instruct the first base station separation entity to restore the configuration of SDT DRB resources and the F1 interface between the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

[0224] Alternatively, when the terminal device sends an RRC recovery request message to the second base station and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity determines whether it is necessary to forward the user context to the second base station based on the first inter-base station message sent by the second base station, wherein the first inter-base station message carries downlink SDT indication information.

[0225] Step 14: When it is determined that the user context does not need to be forwarded to the second base station or the terminal device still resides in the first base station, the control plane entity of the first base station notifies the user plane entity of the first base station through a request message of the interface within the third base station to restore all SDT DRB bearers, wherein the user plane entity of the first base station is used to notify the configuration status of the control plane entity of the first base station through a response message of the interface within the third base station after completing the SDT DRB recovery. When it is determined that the user context needs to be forwarded to the second base station, the control plane entity of the first base station sends a path switching message to the control plane entity of the core network, wherein the path switching message is used to notify the control plane entity of the core network to change the receiving address of subsequent data or signaling.

[0226] Step 15, when the core network sends cached data and signaling to the first base station, the first base station control plane entity and / or the first base station user plane entity forwards the received data and / or signaling to the terminal device through the first base station separation entity. Alternatively, when the core network sends cached data and signaling to the second base station, the second base station is used to send the received signaling and / or data to the terminal device.

[0227] It should be noted that the energy-saving information notification system provided in this embodiment can be used to perform Figure 1 , Figure 5 , Figure 6 The energy-saving information notification method shown, therefore, the relevant explanations and instructions on the above-mentioned energy-saving information notification method are also applicable to the embodiments of the present application and will not be repeated here.

[0228] The present application scheme is further illustrated below with reference to specific cases.

[0229] Case 1

[0230] This case mainly describes the process of configuring eDRX and downlink SDT when the base station control plane entity gNB-CU-CP notifies the UE to enter the inactive state, and notifies the core network to configure related parameters. The specific process is as follows:

[0231] 1) When gNB1-CU-CP determines that the terminal needs to return to an inactive state, it configures downlink small data packet transmission and eDRX at the same time, generates a related RRC release message and forwards it to the terminal through the first base station separation entity gNB1-DU, where the RRC release message includes the inactive eDRX paging cycle, the inactive eDRX time window MT-SDT indication information, and the downlink RSRP trigger threshold;

[0232] 2) gNB1-CU-CP instructs the gNB1-CU-CP user plane entity to suspend the SDT bearer configuration through the E1 interface message UE Context Modification Request. The message in gNB1-CU-CP contains the list of SDT DRBs to be suspended, namely DRB#1 and DRB#2. Each DRB contains a Boolean SDT indicator.

[0233] 3) After receiving the E1 interface message UE Context Modification Request, the gNB1-CU-CP user plane entity determines that the DRB configured as SDT is in a suspended state, and notifies the gNB1-CU-CP of the configuration result through the E1 interface message UE Context Modification Response;

[0234] 4) gNB1-CU-CP notifies AMF through MT Communication Handling Request that the terminal configures eDRX configuration and SDT configuration in the inactive state. The specific information includes the inactive eDRX paging cycle, the inactive eDRX time window SDT indication information, the SDT-associated PDU session identifier #1 and QoS Flow identifiers #1 and #2.

[0235] Case 2

[0236] This case mainly describes the process of triggering the MT-SDT recovery process in the cell after the base station control plane entity gNB-CU-CP receives the downlink data notification from the core network. The specific process is as follows:

[0237] 1) After receiving the MT Communication Handling Request, the AMF saves the eDRX and SDT configurations of the terminal and determines that the terminal enters a non-idle state using eDRX;

[0238] 2) AMF sends the terminal identification, eDRX configuration and SDT configuration information to SMF / UPF;

[0239] 3) When the downlink data reaches SMF / UPF, the user plane entity buffers the downlink data and sends the relevant bearer information to AMF. The bearer related information includes the 5QI, QOS Flow ID, PDU SessionID, SDTindicator of the buffered bearer, and the buffer size of all SDT bearers;

[0240] 4) After receiving the bearer information sent by SMF / UPF, AMF generates DL Data Notification and sends it to gNB1-CU-CP, wherein the first notification information is included in the DL Data Notification. When the first notification information includes the bearer information sent by the user plane entity of the heart network, the first notification information includes the 5QI, QOS FlowID, PDU Session ID, SDT indicator (Boolean value) of the cached bearer, the cache quantity size of the SDT bearer, paging priority indication information (Paging Priority Indicator (PPI)), and allocation and preemption priority (Allocation and Retention Priority);

[0241] 5) After receiving the DL Data Notification, the gNB1-CU-CP saves the first notification information and deduces that the user is configured with eDRX according to the user's identity, and generates a paging message within the gNB1-CU-CP, wherein the paging message within the gNB1-CU-CP includes paging priority indicator (PPI), downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window;

[0242] 6) After receiving the paging message in gNB1-CU-CP, gNB1-DU determines the paging time to be sent to the terminal according to the activated eDRX paging cycle and the inactive eDRX time window, and determines the scheduling priority of the paging message according to the paging priority indication information; the paging time includes the frame and time slot position of the paging transmission; gNB1-DU generates an RRC paging message to be sent to the user, and the RRC paging message includes the MT-SDT indicator.

[0243] Case 3

[0244] This case mainly describes the process of triggering the recovery of MT-SDT in the cell by the base station control plane entity gNB-CU-CP after receiving the NAS signaling notification from the core network. The specific process is as follows:

[0245] 1) After receiving the signaling message from NAS, AMF generates a downlink data notification DL Data Notification and sends it to gNB1-CU-CP, wherein the DL Data Notification includes the first notification information. When the first notification information includes the bearer information sent by the user plane entity of the heart network, the first notification information includes the SDTindicator (Boolean value) of the cache bearer, the cache quantity size of the SDT bearer, the paging priority indication information (Paging Priority Indicator (PPI)), the allocation and preemption priority (Allocation and Retention Priority), and the signaling indicator (signaling indicator);

[0246] 2) After receiving the DL Data Notification, the gNB1-CU-CP saves the first notification information and deduces that the user is configured with eDRX according to the user's identity, and generates a paging message within the gNB1-CU-CP, wherein the paging message within the gNB1-CU-CP includes paging priority indicator (PPI), downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, and signaling indicator;

[0247] 3) After receiving the paging message in gNB1-CU-CP, gNB1-DU determines the paging time to be sent to the terminal according to the active eDRX paging cycle and the inactive eDRX time window, and determines the scheduling priority of the paging message according to the paging priority indication information; the paging time includes the frame and time slot position of the paging transmission; gNB1-DU generates an RRC paging message to be sent to the user, and the RRC paging message includes the MT-SDT indicator;

[0248] 4) When the terminal sends an RRC Resume Request message to the gNB1-CU-CP with the cause value MT-SDT, the gNB1-CU-CP sends an F1 interface message UE Context Modification Request to the gNB1-DU to instruct the gNB1-DU to resume configuring the SDT DRB resources and the F1 interface channel with the control plane entity;

[0249] 5) gNB1-CU-CP notifies the gNB1-CU-CP user plane entity to restore all SDT DRB bearers through the E1 interface message UE Context Modification Request; after completing the SDT DRB restoration, the gNB1-CU-CP user plane entity notifies the gNB1-CU-CP configuration status through UEContext Modification Response.

[0250] Case 4

[0251] This case mainly describes the process of triggering the MT-SDT recovery process in the neighboring base station gNB2 after the base station control plane entity gNB1-CU-CP receives the downlink data notification from the core network, which involves the transmission anchor point switching to the neighboring base station gNB2. The specific process is as follows:

[0252] 1) After receiving the MT Communication Handling Request, the AMF saves the eDRX and SDT configurations of the terminal and determines that the terminal enters a non-idle state using eDRX;

[0253] 2) AMF sends the terminal identification, eDRX configuration and SDT configuration information to SMF / UPF;

[0254] 3) When the downlink data reaches SMF / UPF, the user plane entity buffers the downlink data and sends the relevant bearer information to AMF. The bearer related information includes the 5QI, QOS Flow ID, PDU SessionID, SDTindicator of the buffered bearer, and the buffer size of all SDT bearers;

[0255] 4) After receiving the bearer information sent by SMF / UPF, AMF generates DL Data Notification and sends it to gNB1-CU-CP, wherein the first notification information is included in the DL Data Notification. When the first notification information includes the bearer information sent by the user plane entity of the heart network, the first notification information includes the 5QI, QOS FlowID, PDU Session ID, SDT indicator (Boolean value) of the cached bearer, and the cache quantity size of all SDT bearers. DL Data Notification also includes paging priority indication information (Paging Priority Indicator (PPI)), allocation and preemption priority (Allocation and Retention Priority);

[0256] 5) gNB1-CU-CP sends an XnAP message RAN paging to gNB2. The inter-base station paging message includes paging priority indicator (PPI), downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer buffer size, and core network signaling indication information.

[0257] 6) gNB2 determines whether to send an RRC paging message based on a downlink small data packet according to the downlink SDT indication information and the size of the buffer size of the SDT bearer, determines the paging time sent to the terminal according to the inactive eDRX paging cycle and the inactive eDRX time window, and determines the scheduling priority of the paging message according to the paging priority indication information, where the RRC paging message includes a downlink SDT indicator (Boolean value);

[0258] 7) The terminal sends a RRCResumeRequest message to gNB2, carrying the cause value MT-SDT;

[0259] 8) After receiving the RRCResumeRequest message, gNB2 sends an XnAP message UE ContextRetrieve to gNB1-CU-CP, carrying the downlink small data indication information. gNB1-CU-CP determines that the user context needs to be forwarded to gNB2;

[0260] 9) gNB1-CU-CP needs to notify AMF to change the subsequent data receiving target address to the downlink data receiving channel address provided by gNB2 through the NGAP message Path Switch Request;

[0261] 10) When AMF sends the cached data and signaling to gNB2, gNB2 sends the received data to the user.

[0262] The solution of the present application solves the problem of terminal power consumption and signaling waste caused by the need to return to the connected state when transmitting small data packets in the eDRX state, and supports the ability to configure two states for the terminal at the same time; supports the core network to determine which bearers belong to SDT bearers, and determines the SDT bearers and calculates the number of cached SDTs according to the requirements of the base station side; solves the problem that the core network only notifies the arrival of data but does not notify the amount of cached data in the eDRX state, supports the base station side to determine whether the downlink SDT is triggered based on the amount of cached data, and avoids the situation where the SDT cannot be triggered due to the lack of information; the solution of the present application is a network-side solution, does not involve any impact on the terminal, has good forward compatibility, and is easy to deploy and implement in the network.

[0263] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0264] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0265] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0266] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0267] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0268] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0269] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for notifying energy-saving information, applied to a first base station control plane entity, characterized in that: include: The first base station control plane entity sends a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; Receiving a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the first base station control plane entity SDT; A paging message is sent to the first base station separation entity and / or a second base station adjacent to the first base station.

2. The energy-saving information notification method according to claim 1, characterized in that: The method further comprises: When the first base station control plane entity determines that the terminal device needs to return to an inactive state and needs to configure downlink small data packet transmission SDT and / or extended discontinuous reception mode eDRX, the wireless resource control RRC release message is forwarded to the terminal device through the first base station separation entity.

3. The energy-saving information notification method according to claim 2, characterized in that: The RRC release message includes: downlink small data transmission configuration and / or eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, and the eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

4. The energy-saving information notification method according to claim 3, characterized in that: The method further comprises: The first base station control plane entity sends a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a list of small data transmission data bearers SDT DRB to be suspended, and the small data transmission data bearer SDT DRB list includes indication information that at least one DRB is configured as SDT.

5. The energy-saving information notification method according to claim 4, characterized in that: The method further comprises: When the first base station user plane entity determines the data bearer DRB configured as SDT to be in a suspended state based on the first base station internal request message, the first base station control plane entity receives a first base station internal response message returned by the first base station user plane entity, wherein the first base station internal response message is used to notify the first base station control plane entity of the configuration result.

6. The energy-saving information notification method according to claim 1, characterized in that: The first base station control plane entity sending a first core network request message to the core network includes: The first base station control plane entity notifies the core network control plane entity through the first core network request message that the terminal device configures the eDRX configuration in the inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX, a time window of the inactive eDRX; and When both the first base station and the terminal device support SDT, the core network control plane entity is instructed to configure the SDT configuration of the terminal device in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or service quality flow QoS flow identifiers.

7. The energy-saving information notification method according to claim 1, characterized in that: Receiving a second core network notification message sent by the core network includes: The first base station control plane entity receives the second core network notification message, wherein the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

8. The energy-saving information notification method according to claim 7, characterized in that: The second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity and size of all SDT bearers.

9. The energy-saving information notification method according to claim 8, characterized in that: When the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

10. The energy-saving information notification method according to claim 7, characterized in that: The second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

11. The energy-saving information notification method according to claim 8, characterized in that: The method further comprises: The first base station control plane entity determines whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and generates a first base station intra-paging message when it is determined that the user has configured the eDRX configuration, wherein the first base station intra-paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

12. The energy-saving information notification method according to claim 11, characterized in that: The method further comprises: The first base station control plane entity sends the first base station internal paging message to the first base station separation entity, wherein the first base station separation entity is used to determine the paging time sent to the terminal device according to the inactive eDRX paging cycle and the inactive eDRX time window after receiving the first base station internal paging message, and determine the scheduling priority of the paging message according to the paging priority indication information PPI, and generate an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

13. The energy-saving information notification method according to claim 8, characterized in that: The method further comprises: The first base station control plane entity sends an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, and core network signaling indication information.

14. The energy-saving information notification method according to claim 13, characterized in that: The second base station is used to determine whether to send an RRC paging message based on a downlink small data packet according to the downlink SDT indication information and the cache quantity of the SDT bearer when receiving the inter-base station paging message, and determine the paging time sent to the terminal device according to the inactive eDRX paging cycle and the time window of the inactive eDRX, and determine the scheduling priority of the paging message according to the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

15. The energy-saving information notification method according to claim 12 or 14, characterized in that: The method further comprises: When the first base station control plane entity receives the RRC recovery request message sent by the terminal device and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity sends a second base station request message to the first base station separation entity, wherein the second base station request message is used to instruct the first base station separation entity to restore the configuration of SDT DRB resources and the F1 interface between the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

16. The energy-saving information notification method according to claim 15, characterized in that: The method further comprises: When the terminal device sends the RRC recovery request message to the second base station and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity determines whether it is necessary to forward the user context to the second base station based on the first inter-base station message sent by the second base station, wherein the first inter-base station message carries downlink SDT indication information.

17. The energy-saving information notification method according to claim 16, characterized in that: The method further comprises: When it is determined that there is no need to forward the user context to the second base station or the terminal device still resides in the first base station, the control plane entity of the first base station notifies the user plane entity of the first base station through a request message of the interface within the third base station to restore all SDT DRB bearers, wherein the user plane entity of the first base station is used to notify the configuration status of the control plane entity of the first base station through a response message of the interface within the third base station after completing the SDT DRB recovery.

18. The energy-saving information notification method according to claim 17, characterized in that: The method further comprises: When it is determined that the user context needs to be forwarded to the second base station, the first base station control plane entity sends a path switching message to the core network control plane entity, wherein the path switching message is used to notify the core network control plane entity to change the receiving address of subsequent data or signaling.

19. The energy-saving information notification method according to claim 18, characterized in that: The method further comprises: In the case where the core network sends cached data and signaling to the first base station, the first base station control plane entity forwards the received data and / or signaling to the terminal device through the first base station separation entity.

20. The energy-saving information notification method according to claim 19, characterized in that: In the case where the core network sends cached data and signaling to the second base station, the second base station is used to send the received signaling and / or data to the terminal device.

21. A method for notifying energy-saving information, applied to a core network control plane entity, characterized in that: include: The core network control plane entity receives a first core network request message sent by the first base station control plane entity, and determines, based on the first core network request message, that the terminal device is configured in an inactive state with at least one of the following: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; A second core network notification message is sent to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

22. The energy-saving information notification method according to claim 21, characterized in that: The first core network request message is used to instruct the core network control plane entity that the terminal device configures the eDRX configuration in an inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of an inactive eDRX and a time window of an inactive eDRX.

23. The energy-saving information notification method according to claim 22, characterized in that: When both the first base station and the terminal device support SDT, the first core network request message is also used to instruct the core network control plane entity that the terminal device configures the SDT configuration in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

24. The energy-saving information notification method according to claim 23, characterized in that: The method comprises: Upon receiving the first core network request message sent by the first base station control plane entity, the core network control plane entity saves the eDRX configuration and the SDT configuration of the terminal device, and determines that the terminal device enters a non-idle state using eDRX.

25. The energy-saving information notification method according to claim 24, characterized in that: The method further comprises: The core network control plane entity sends the terminal device identification, eDRX configuration and SDT configuration to the core network user plane entity.

26. The energy-saving information notification method according to claim 25, characterized in that: The method further comprises: When downlink data arrives at the core network user plane entity, the core network control plane entity receives the bearer information sent by the core network user plane entity, wherein the bearer information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity size of all SDT bearers.

27. The energy-saving information notification method according to claim 26, characterized in that: Sending the second core network notification message to the first base station control plane entity includes: When the core network control plane entity receives the bearer information sent by the core network user plane entity and / or receives the NAS signaling message, the core network control plane entity generates the second core network notification message and sends the second core network notification message to the first base station control plane entity, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

28. The energy-saving information notification method according to claim 27, characterized in that: The second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity size of all SDT bearers.

29. The energy-saving information notification method according to claim 28, characterized in that: When the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

30. The energy-saving information notification method according to claim 27, characterized in that: The method further comprises: The core network control plane entity determines the paging priority indication information PPI, channel allocation and preemption priority based on the subscription information or configuration of the terminal device, and adds the paging priority indication information PPI, the allocation and preemption priority to the second core network notification message.

31. A method for notifying energy-saving information, applied to a first base station separation entity, characterized in that: include: The first base station separation entity receives a first base station intra-paging message sent by a first base station control plane entity, wherein the first base station intra-paging message is generated by the first base station control plane based on a second core network notification message sent by a received core network, and the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

32. The energy-saving information notification method according to claim 31, characterized in that: The second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, including at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

33. The energy-saving information notification method according to claim 32, characterized in that: The second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity and size of all SDT bearers.

34. The energy-saving information notification method according to claim 33, characterized in that: When the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

35. The energy-saving information notification method according to claim 34, characterized in that: The second core network notification message also includes: paging priority indication information PPI, channel allocation and preemption priority, wherein the paging priority indication information PPI, channel allocation and preemption priority are determined by the core network control plane entity based on the contract information or configuration of the terminal device.

36. The energy-saving information notification method according to claim 35, characterized in that: The paging message within the first base station is generated when the control plane entity of the first base station determines that the user has configured the eDRX configuration based on the first notification information and the terminal equipment identifier, and includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

37. The energy-saving information notification method according to claim 36, characterized in that: The first base station separation entity determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window in the paging message within the first base station, determines the scheduling priority of the paging message based on the paging priority indication information PPI, and generates an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

38. The energy-saving information notification method according to claim 37, characterized in that: The first base station separation entity receives a second base station internal request message sent by the first base station control plane entity, wherein the second base station internal request message is triggered when the first base station control plane entity receives an RRC recovery request message sent by the terminal device and the RRC recovery request message carries a cause value MT-SDT.

39. The energy-saving information notification method according to claim 38, characterized in that: The first base station separation entity restores the configuration of SDT DRB resources and the F1 interface between the first base station control plane entity and the first base station according to the request message within the second base station.

40. The energy-saving information notification method according to claim 39, characterized in that: In the case where the core network sends cached data and signaling to the first base station, the first base station separation entity forwards the received data and / or signaling sent by the first base station control plane entity to the terminal device.

41. An energy-saving information notification device, characterized in that: include: A notification module, configured to send a first core network request message to the core network, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; A receiving module, configured to receive a second core network notification message sent by the core network, wherein the second core network notification message is at least used to indicate the number of caches carried by the first base station control plane entity SDT; The paging module is used to send a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

42. The energy-saving information notification device according to claim 41, characterized in that: The notification module is used to notify the core network control plane entity through the first core network request message that the terminal device configures the eDRX configuration in an inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX; and, when both the first base station and the terminal device support SDT, instruct the core network control plane entity to configure the SDT configuration of the terminal device in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

43. The energy-saving information notification device according to claim 41, characterized in that: The receiving module is used to receive the second core network notification message, wherein the second core network notification message is generated by the core network control plane entity after receiving the bearer information sent by the core network user plane entity and / or receiving the non-access layer NAS signaling message, and includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

44. The energy-saving information notification device according to claim 43, characterized in that: The second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity and size of all SDT bearers.

45. An energy-saving information notification device, characterized in that: include: The notification receiving module is used to receive a first core network request message sent by a first base station control plane entity, and determine, based on the first core network request message, that the terminal device is configured in an inactive state with at least one of the following: an extended discontinuous reception mode eDRX configuration and a small data transmission SDT configuration; A message sending module is used to send a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity.

46. ​​The energy-saving information notification device according to claim 45, characterized in that: The notification receiving module is used to save the eDRX configuration and the SDT configuration of the terminal device when receiving the first core network request message sent by the first base station control plane entity, determine that the terminal device enters a non-idle state using eDRX, and send the terminal device identification, eDRX configuration and SDT configuration to the core network user plane entity.

47. The energy-saving information notification device according to claim 46, characterized in that: The notification receiving module is used to receive the bearer information sent by the core network user plane entity when the downlink data arrives at the core network user plane entity, wherein the bearer information includes at least one of the following: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

48. The energy-saving information notification device according to claim 47, characterized in that: A message sending module is used to generate the second core network notification message and send the second core network notification message to the first base station control plane entity upon receiving the bearer information sent by the core network user plane entity and / or receiving the NAS signaling message, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

49. An energy-saving information notification system, characterized in that: include: A first base station control plane entity and a core network control plane entity, wherein: The first base station control plane entity sends a first core network request message to the core network control plane entity, wherein the first core network request message is used to notify the core network terminal device to configure at least one of the following in an inactive state: an extended discontinuous reception mode eDRX configuration, a small data transmission SDT configuration; The core network control plane entity sends a second core network notification message to the first base station control plane entity, wherein the second core network notification message is at least used to indicate the number of caches carried by the SDT of the first base station control plane entity; The first base station control plane entity sends a paging message to the first base station separation entity and / or a second base station adjacent to the first base station.

50. The energy-saving information notification system according to claim 49, characterized in that: When the first base station control plane entity determines that the terminal device needs to return to an inactive state and configures downlink small data packet transmission SDT and extended discontinuous reception mode eDRX, the first base station control plane entity forwards the radio resource control RRC release message to the terminal device through the first base station separation entity.

51. The energy-saving information notification system according to claim 50, characterized in that: The RRC release message includes: downlink small data transmission configuration and eDRX configuration, wherein the downlink small data transmission configuration includes at least one of the following: mobile terminal small data transmission MT-SDT indication information, downlink reference signal received power RSRP trigger threshold, the eDRX configuration includes at least one of the following: inactive eDRX paging cycle, inactive eDRX time window.

52. The energy-saving information notification system according to claim 51, characterized in that: The first base station control plane entity sends a first base station request message to the first base station user plane entity, wherein the first base station request message is used to instruct the first base station user plane entity to suspend the SDT bearer configuration, wherein the first base station request message includes: a small data transmission data bearer SDT DRB list to be suspended, and the small data transmission data bearer SDT DRB list includes indication information that at least one DRB is configured as SDT.

53. The energy-saving information notification system according to claim 52, characterized in that: When receiving the request message within the first base station, the user plane entity of the first base station determines the data bearer DRB configured as SDT to be in a suspended state, and notifies the control plane entity of the first base station of the configuration result through a response message within the first base station.

54. The energy-saving information notification system according to claim 53, characterized in that: The first base station control plane entity notifies the core network control plane entity through the first core network request message that the terminal device configures the eDRX configuration in an inactive state, wherein the eDRX configuration includes at least one of the following: a paging cycle of the inactive eDRX and a time window of the inactive eDRX; and, when both the first base station and the terminal device support SDT, instructs the core network control plane entity to configure the SDT configuration of the terminal device in an inactive state, wherein the SDT configuration includes at least one of the following: SDT indication information, one or more protocol data unit PDU session identifiers associated with the SDT and / or quality of service flow QoS flow identifiers.

55. The energy-saving information notification system according to claim 54, characterized in that: When receiving the first core network request message sent by the first base station control plane entity, the core network control plane entity saves the eDRX configuration and the SDT configuration of the terminal device, and determines that the terminal device enters a non-idle state using eDRX.

56. The energy-saving information notification system according to claim 55, characterized in that: The core network control plane entity sends the terminal device identification, eDRX and SDT configuration to the core network user plane entity.

57. The energy-saving information notification system according to claim 56, characterized in that: When downlink data arrives at the core network user plane entity, the core network user plane entity is used to cache the downlink data and send the corresponding bearer information to the core network control plane entity, wherein the bearer information includes: the 5G service quality identifier of the cached bearer, the QoS flow identifier, the PDU session identifier, the SDT indication information, and the cache quantity size of all SDT bearers.

58. The energy-saving information notification system according to claim 57, characterized in that: When the core network control plane entity receives the bearer information sent by the core network user plane entity and / or receives the NAS signaling message, the core network control plane entity generates the second core network notification message and sends the second core network notification message to the first base station control plane entity, wherein the second core network notification message includes at least one of the following: bearer configuration information of the terminal device, belonging small data packet service information, cached small data packet data volume, and whether there is a core network signaling indication.

59. The energy-saving information notification system according to claim 58, characterized in that: The second core network notification message includes first notification information, wherein, when the core network control plane entity receives the bearer information sent by the core network user plane entity, the first notification information includes at least one of the following: a 5G service quality identifier of the cached bearer, a QoS flow identifier, a PDU session identifier, SDT indication information, and the cache quantity size of all SDT bearers.

60. The energy-saving information notification system according to claim 59, characterized in that: When the core network control plane entity receives the bearer information and the NAS signaling message, the cache quantity size of the SDT bearer is the sum of the bearer cache quantity size corresponding to the bearer information and the bearer cache quantity size corresponding to the NAS signaling message.

61. The energy-saving information notification system according to claim 58, characterized in that: The core network control plane entity determines the paging priority indication information PPI, channel allocation and preemption priority based on the subscription information or configuration of the terminal device, and adds the paging priority indication information PPI, channel allocation and preemption priority to the second core network notification message.

62. The energy-saving information notification system according to claim 59, characterized in that: The first base station control plane entity determines whether the terminal device has been configured with eDRX configuration based on the first notification information and the terminal device identifier, and when it is determined that the user has configured the eDRX configuration, sends a first base station internal paging message to the first base station separation entity, wherein the first base station internal paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, and inactive eDRX time window.

63. The energy-saving information notification system according to claim 62, characterized in that: The first base station separation entity determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the inactive eDRX time window in the paging message within the first base station, determines the scheduling priority of the paging message based on the paging priority indication information PPI, and generates an RRC paging message sent to the terminal device, wherein the paging time includes the frame and time slot position of the paging transmission, and the RRC paging message includes downlink SDT indication information.

64. The energy-saving information notification system according to claim 59, characterized in that: The first base station control plane entity sends an inter-base station paging message to the second base station, wherein the inter-base station paging message includes at least one of the following: paging priority indication information PPI, downlink SDT indication information, inactive eDRX paging cycle, inactive eDRX time window, SDT bearer cache quantity size, and core network signaling indication information.

65. The energy-saving information notification system according to claim 64, characterized in that: The second base station determines whether to send an RRC paging message based on a downlink small data packet based on the downlink SDT indication information in the inter-base station paging message and the size of the cache quantity of the SDT bearer, and determines the paging time sent to the terminal device based on the inactive eDRX paging cycle and the time window of the inactive eDRX, and determines the scheduling priority of the paging message based on the paging priority indication information PPI, wherein the RRC paging message includes the downlink SDT indication information.

66. The energy-saving information notification system according to claim 63 or 65, characterized in that: When the first base station control plane entity receives the RRC recovery request message sent by the terminal device and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity sends a second base station request message to the first base station separation entity, wherein the second base station request message is used to instruct the first base station separation entity to restore the configuration of SDT DRB resources and the F1 interface between the first base station control plane entity, and determine whether to restore SRB2 in the first base station separation entity based on whether the second core network notification message includes a core network signaling indication.

67. The energy-saving information notification system according to claim 66, characterized in that: When the terminal device sends an RRC recovery request message to the second base station and the RRC recovery request message carries the cause value MT-SDT, the first base station control plane entity determines whether it is necessary to forward the user context to the second base station based on the first inter-base station message sent by the second base station, wherein the first inter-base station message carries downlink SDT indication information.

68. The energy-saving information notification system according to claim 67, characterized in that: When it is determined that there is no need to forward the user context to the second base station or the terminal device still resides in the first base station, the control plane entity of the first base station notifies the user plane entity of the first base station to restore all SDT DRB bearers through a request message of the interface within the third base station, wherein the user plane entity of the first base station is used to notify the configuration status of the control plane entity of the first base station through a response message of the interface within the third base station after completing the SDT DRB recovery.

69. The energy-saving information notification system according to claim 68, characterized in that: When it is determined that the user context needs to be forwarded to the second base station, the first base station control plane entity sends a path switching message to the core network control plane entity, wherein the path switching message is used to notify the core network control plane entity to change the receiving address of subsequent data or signaling.

70. The energy-saving information notification system according to claim 69, characterized in that: In the case where the core network sends cached data and signaling to the first base station, the first base station control plane entity and / or the first base station user plane entity will forward the received data and / or signaling to the terminal device through the first base station separation entity.

71. The energy-saving information notification system according to claim 70, characterized in that: In the case where the core network sends cached data and signaling to the second base station, the second base station is used to send the received signaling and / or data to the terminal device.

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