Paging method and paging device for a terminal - Patents.com

Abstract

The present application provides a paging method and a paging device for a terminal. The discontinuous reception cycle of a terminal in an inactive state is an extended discontinuous reception cycle, and the paging method is applied to an access network device. In the technical solution provided in the present application, first information is received from a core network element to determine identification information of the terminal to determine a paging occasion for the terminal. After receiving second information from the core network element, access network paging for the terminal is performed at the paging occasion for the terminal. The technical solution provided in the present application can solve the problem of an access network device paging a UE in an inactive state in an eDRX cycle.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202310131303.6, entitled "Paging Method and Paging Device for Terminal," filed with the State Intellectual Property Office of the People's Republic of China on February 10, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of wireless communication technology, and in particular to a paging method and paging device for a terminal. [Background technology]

[0003] In the extended discontinuous reception (eDRX) technology, after releasing a user equipment (UE) into an inactive (INACTIVE) state, an access network device may page the UE in the INACTIVE state by sending a radio access network paging (RAN paging) message. After detecting the RAN paging message for paging the UE through monitoring, the UE reconnects to the network in response to the RAN paging message.

[0004] However, the eDRX technology does not provide a solution to the problem of how an access network device pages a UE in INACTIVE state in an eDRX cycle, especially when the INACTIVE eDRX cycle is greater than 10.24 s. Summary of the Invention [Means for solving the problem]

[0005] The present application provides a paging method and a paging device for a terminal to page a user equipment (UE) in an inactive state in an extended discontinuous reception (eDRX) cycle.

[0006] According to a first aspect, the present application provides a paging method for a terminal, wherein an DNR cycle of a terminal in an inactive state is an extended DNR cycle, and the method is applied to a first access network device, the method including: receiving first information for a core network element, the first information indicating identification information of the terminal, the identification information being used to determine a paging occasion for the terminal; receiving second information for the core network element, the second information being used to trigger access network paging for the terminal; and performing access network paging for the terminal at the paging occasion.

[0007] The access network device may be a base station (the next generation NodeB, gNodeB, gNB), and the core network element may be an access and mobility management function (AMF) network element.

[0008] In a possible implementation, the UE identity may include a UE first identity index value and a UE second identity index value.

[0009] The first identity index value may be determined based on the identity of the UE. For example, the first identity index value may be a UE_ID. Specifically, the UE_ID is the least significant 12 bits of a 5th generation system temporary mobile subscription identifier (5G-S-TMSI) of the UE, and the 5G-S-TMSI is a shortened form of a 5G Globally Unique Temporary Identifier (5G-GUTI).

[0010] The second identification information index value may be determined based on the identification information of the UE. For example, the second identification information index value may be a terminal device identification information index value UE_ID_H obtained by a hash operation. Specifically, the UE_ID_H is the most significant 13 bits of a hashed identifier (Hashed ID), and the Hashed ID is a frame check sequence obtained by performing an operation on the least significant 32 bits of the 5G-S-TMSI according to a frame check sequence generation method.

[0011] In another possible embodiment, optionally, the UE identification information may be the least significant 32 bits of the 5G-S-TMSI.

[0012] Optionally, the UE identity may alternatively be the least significant 32 bits of the serving-temporary mobile subscriber identity (S-TMSI).

[0013] In this technical solution, the access network device may receive identification information of the UE from a core network element, and may determine a paging occasion (PO) of the UE based on the identification information to perform paging of the UE.

[0014] With respect to the first aspect, in a possible implementation, receiving second information from the core network element comprises receiving an N2 message from the core network element, the N2 message carrying the second information, the second information comprising an inactive radio network temporary identifier or an identifier that uniquely identifies the UE association over an NG interface in the access network device.

[0015] In this embodiment, before the UE next wakes up to monitor for paging messages, the core network element may send an N2 message to the access network device to trigger the access network device to initiate access network paging for the UE.

[0016] The second information includes an inactive radio network temporary identifier (I-RNTI) to explicitly indicate the identity of the paged UE.

[0017] Optionally, the second information may alternatively include an identifier (RAN UE NGAP ID) that uniquely identifies a UE association via an NG interface in the access network device. The RAN UE NGAP ID is used to uniquely identify a UE via an NG interface in the access network device. The access network device may use the RAN UE NGAP ID to determine the UE to be paged, and may further determine the I-RNTI of the UE using a correspondence between the RAN UE NGAP ID and the I-RNTI stored in the device.

[0018] Regarding the first aspect, in a possible implementation, the step of receiving first information from the core network element includes a step of receiving a first message from the core network element, the first message including an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, and the first message carries the first information.

[0019] In this embodiment, the first information may be carried in a first message, and the first message includes an initial context setup request message (UE CONTEXT MODIFICATION REQUEST), a terminal device context modification request message (UE CONTEXT MODIFICATION REQUEST), a handover request message (HANDOVER REQUEST), or a path switch request acknowledgement message (PATH SWITCH REQUEST ACKNOWLEDGE).

[0020] For example, in a step in which a core network element creates a UE context (Context) in an access network device using an INITIAL CONTEXT SETUP REQUEST message, the core network element may send first information to the access network device using the INITIAL CONTEXT SETUP REQUEST message.

[0021] As another example, in a step in which a core network element modifies a UE Context in an access network device using a CONTEXT MODIFICATION REQUEST message, the core network element may send first information to the access network device using the CONTEXT MODIFICATION REQUEST message.

[0022] Regarding the first aspect, in a possible implementation, the N2 message further carries first information.

[0023] In this embodiment, the access network device may further receive first information, i.e., identification information of the UE, from the N2 message sent by the core network element, and determine the PO of the UE based on the information.

[0024] Regarding the first aspect, in a possible implementation, the identity information comprises a first identity index value of the terminal and / or a second identity index value of the terminal.

[0025] In this embodiment, the first identification information index value may be an identification information index value of the UE, for example, UE_ID, and the second identification information index value may be a terminal device identification information index value obtained by a hash operation, for example, UE_ID_H.

[0026] With regard to the first aspect, in a possible implementation, the identification information comprises the least significant 32 bits of a globally unique temporary terminal identifier.

[0027] In this embodiment, the UE identification information may be the least significant 32 bits of the 5G-S-TMSI.

[0028] The access network device may use the least significant 32 bits of the 5G-S-TMSI to determine the identity of the UE.

[0029] For example, the lowest 12 bits of the lowest 32 bits of 5G-S-TMSI are used as UE_ID, and the highest 13 bits of the Hashed ID obtained by performing an operation on the lowest 32 bits of 5G-S-TMSI according to the frame check sequence generation method are used as UE_ID_H.

[0030] Optionally, the UE identity may alternatively be the least significant 32 bits of the S-TMSI.

[0031] The method for determining the UE identity using the least significant 32 bits of the S-TMSI is consistent with the method for determining the UE identity using the least significant 32 bits of the 5G-S-TMSI.

[0032] Regarding the first aspect, in a possible implementation, the identification information includes a first portion of identification information and a second portion of identification information, and the step of receiving the first information from the core network element includes the steps of receiving a first message from the core network element, where the first message includes an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, and where the first message carries the first portion of identification information; and receiving an N2 message from the core network element, where the N2 message carries the second portion of identification information.

[0033] In this embodiment, the access network device may receive the first part of the identification information of the UE from the first information sent by the core network element and the second part of the identification information of the UE from the N2 message sent by the core network element, to determine the PO of the UE based on the first part of the identification information and the second part of the identification information, to perform paging of the UE.

[0034] Regarding the first aspect, in a possible implementation, the first part of the identification information includes a first identification information index value of the terminal, and the second part of the identification information includes a second identification information index value of the terminal.

[0035] In this embodiment, the first part of the identification information may be a first identification information index value of the UE, for example, UE_ID, and the second part of the identification information may be a second identification information index value of the UE, for example, UE_ID_H.

[0036] Regarding the first aspect, in a possible implementation, the method further comprises the step of transmitting the first information to a second access network device.

[0037] In this embodiment, when the UE is in an inactive state, the UE may move to another base station. In this case, as the last serving base station (anchor gNB) of the UE, when paging the UE, the first access network device also notifies another base station in the RNA region (RAN notification region) to page the UE.

[0038] Therefore, the first access network device sends an inactive enhanced discontinuous reception (INACTIVE eDRX) cycle configuration of the UE to the second access network device via the Xn interface or the F1 interface.

[0039] The Xn interface is an interface for transmitting information between access network devices, and the F1 interface is an interface for transmitting information between a central unit (CU) and a distributed unit (DU) of an access network device.

[0040] According to a second aspect, the present application provides a paging method for a terminal, wherein an DNR cycle of a terminal in an inactive state is an extended DNR cycle, the method is applied to a core network element, and includes: transmitting first information to a first access network device, the first information indicating identification information of the terminal, the identification information being used to determine paging occasions for the terminal; and transmitting second information to the first access network device, the second information being used to trigger access network paging of the terminal.

[0041] In this technical solution, the core network element may send the identification information of the UE to the access network device, so that the access network device can determine the PO of the UE based on the identification information to perform paging of the UE.

[0042] With regard to the second aspect, in a possible implementation, the step of sending the second information to the first access network device includes the step of sending an N2 message to the first access network device, wherein the N2 message carries the second information, and the second information includes an inactive wireless network temporary identifier or an identifier that uniquely identifies the UE association over the NG interface in the access network device.

[0043] In this embodiment, the second information may include an I-RNTI to explicitly indicate the identity of the paged UE.

[0044] Optionally, the second information may alternatively include a RAN UE NGAP ID. After receiving the RAN UE NGAP ID, the access network device may determine the I-RNTI of the UE based on the correspondence between the RAN UE NGAP ID and the I-RNTI.

[0045] Regarding the second aspect, in a possible implementation, the step of sending the first information to the first access network device includes a step of sending a first message to the first access network device, wherein the first message includes an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, and the first message carries the first information.

[0046] In this embodiment, the first information sent by the core network element to the access network device may be carried in a first message, which includes information such as an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message.

[0047] Regarding the second aspect, in a possible embodiment, the N2 message further carries the first information.

[0048] In this embodiment, the core network element may further send the first information, i.e., the identification information of the UE, to the access network device using an N2 message, so that the access network device can determine the PO of the UE based on the information.

[0049] Regarding the second aspect, in a possible implementation, the identity information comprises a first identity index value of the terminal and / or a second identity index value of the terminal.

[0050] In this embodiment, the first identification information index value may be an identification information index value of the UE, for example, UE_ID, and the second identification information index value may be a terminal device identification information index value obtained by a hash operation, for example, UE_ID_H.

[0051] With regard to the second aspect, in a possible implementation, the identification information comprises the least significant 32 bits of a globally unique temporary terminal identifier.

[0052] In this embodiment, the UE identification information may be the least significant 32 bits of the 5G-S-TMSI.

[0053] The access network device may use the least significant 32 bits of the 5G-S-TMSI to determine the identity of the UE.

[0054] For example, the lowest 12 bits of the lowest 32 bits of 5G-S-TMSI are used as the UE_ID, the Hashed ID can be obtained by performing an operation on the lowest 32 bits of 5G-S-TMSI according to the frame check sequence generation method, and the highest 13 bits of the Hashed ID are used as the UE_ID_H.

[0055] Optionally, the UE identity may alternatively be the least significant 32 bits of the S-TMSI.

[0056] The method for determining the UE identity using the least significant 32 bits of the S-TMSI is consistent with the method for determining the UE identity using the least significant 32 bits of the 5G-S-TMSI.

[0057] Regarding the second aspect, in a possible implementation, the identification information includes a first portion of identification information and a second portion of identification information, and the step of sending the first information to the first access network device includes the steps of: sending a first message to the first access network device, the first message including an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, the first message carrying the first portion of identification information; and sending an N2 message to the first access network device, the N2 message carrying the second portion of identification information.

[0058] In this implementation, the core network element may use the first information to send a first portion of the identification information of the UE to the access network device, and use the N2 message to send a second portion of the identification information of the UE to the access network device, so that the access network device can determine the PO of the UE based on the first portion of the identification information and the second portion of the identification information to perform paging for the UE.

[0059] Regarding the second aspect, in a possible implementation, the first part of the identification information comprises a first identification information index value of the terminal, and the second part of the identification information comprises a second identification information index value of the terminal.

[0060] In this embodiment, the first part of the identification information may be a first identification information index value of the UE, for example, UE_ID, and the second part of the identification information may be a second identification information index value of the UE, for example, UE_ID_H.

[0061] According to a third aspect, the present application provides a paging device for a terminal, the device including modules configured to perform the method of the first aspect or any one of the embodiments of the first aspect, each module being embodied in hardware and / or software.

[0062] For example, the apparatus may include a transceiver module and a processing module. The transceiver module is configured to receive first information from a core network element, the first information indicating identification information of a terminal, the identification information being used to determine a paging occasion for the terminal. The transceiver module is further configured to receive second information from the core network element, the second information being used to trigger access network paging for the terminal. The processing module is configured to perform access network paging for the terminal at the paging occasion.

[0063] In a possible embodiment, the transceiver module is further configured to receive an N2 message from the core network element, the N2 message carrying second information, the second information including an inactive wireless network temporary identifier or an identifier that uniquely identifies the UE association over the NG interface in the access network device.

[0064] In a possible embodiment, the transceiver module is further configured to receive a first message from a core network element, the first message including an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, and the first message carries the first information.

[0065] In a possible embodiment, the transceiver module is further configured to receive a first message from the core network element, the first message comprising an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, the first message carrying the first portion of identification information, and the transceiver module is further configured to receive an N2 message from the core network element, the N2 message carrying the second portion of identification information.

[0066] In a possible implementation, the transceiver module is further configured to transmit the first information to a second access network device.

[0067] According to a fourth aspect, the present application provides a paging device for a terminal, the device including modules configured to perform the method of the second aspect or any one of the embodiments of the second aspect, each module being embodied in hardware and / or software.

[0068] For example, the apparatus may include a transceiver module configured to transmit first information to a first access network device, the first information indicating identification information of a terminal, the identification information being used to determine a paging occasion for the terminal, and the transceiver module further configured to transmit second information to the first access network device, the second information being used to trigger access network paging of the terminal.

[0069] In a possible embodiment, the transceiver module is further configured to send an N2 message to the first access network device, the N2 message carrying second information, the second information including an inactive wireless network temporary identifier or an identifier that uniquely identifies the UE association over the NG interface in the access network device.

[0070] In a possible embodiment, the transceiver module is further configured to send a first message to the first access network device, the first message including an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, and the first message carries the first information.

[0071] In a possible embodiment, the transceiver module is further configured to send a first message to the first access network device, the first message including an initial context setup request message, a terminal device context change request message, a handover request message, or a path switch request confirmation message, the first message carrying the first portion of identification information, and the transceiver module is further configured to send an N2 message to the first access network device, the N2 message carrying the second portion of identification information.

[0072] According to a fifth aspect, the present application provides an apparatus including at least one processor and a communication interface, the communication interface and the at least one processor being interconnected via wiring, the at least one processor being configured to execute a computer program or instructions to perform a method according to the first aspect or any one of the possible implementations of the first aspect.

[0073] Optionally, the apparatus may be an access network device or a chip used within an access network device.

[0074] According to a sixth aspect, the present application provides an apparatus including at least one processor and a communication interface, the communication interface and the at least one processor being interconnected via wiring, the at least one processor being configured to execute a computer program or instructions to perform a method according to the second aspect or any one of the possible implementations of the second aspect.

[0075] Optionally, the device may be a core network element.

[0076] According to a seventh aspect, the present application provides a computer-readable medium storing program code for execution by a device, the program code being used to perform a method according to the first aspect, the second aspect, or any one of possible implementations of the first or second aspect.

[0077] According to an eighth aspect, the present application provides a computer program product comprising instructions which, when executed on a computer, enable the computer to perform a method according to the first aspect, the second aspect, or any one of the possible implementations of the first or second aspect. [Brief explanation of the drawings]

[0078] [Figure 1] 1 is a diagram of the architecture of a communication system according to an embodiment of the present application; [Figure 2] FIG. 2 is a diagram of the architecture of a communication system according to another embodiment of the present application. [Figure 3] FIG. 1 is a diagram of an application scenario according to an embodiment of the present application. [Figure 4] FIG. 2 is a diagram of an application scenario according to another embodiment of the present application. [Figure 5] 3 is a schematic flowchart of a paging method for a terminal according to an embodiment of the present application; [Figure 6] 4 is a schematic flowchart of a paging method for a terminal according to another embodiment of the present application; [Figure 7] FIG. 2 is a diagram of the structure of a paging device for a terminal according to an embodiment of the present application; [Figure 8] FIG. 10 is a diagram of the structure of a paging device for a terminal according to another embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0079] The accompanying drawings, mentioned above, illustrate specific embodiments of the present application, and a more detailed description is provided below. The accompanying drawings and text description are not intended to limit the scope of the concepts of the present application in any way, but are intended to explain the concepts of the present application for those skilled in the art with reference to specific embodiments.

[0080] Exemplary embodiments are described in detail herein, and examples of the exemplary embodiments are presented in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise specified, the same numbers in different accompanying drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Rather, the implementations are merely examples of apparatus and methods detailed in the accompanying claims and consistent with certain aspects of the present application.

[0081] 1 is a diagram of an architecture of a communication system according to an embodiment of the present application. As shown in FIG. 1, the communication system is a network architecture of a fifth generation (5G) communication system, and may include a terminal device, an access network device, a core network device, and a data network (DN). The terminal device, the access network device, and the core network device are the main parts of the architecture.

[0082] A terminal device may be user equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a terminal, a wireless communication device, a multimedia device, a streaming media device, a UE agent, a UE apparatus, etc. An access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or another processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a future 5G network, a terminal in a future evolved public land mobile network (PLMN) network, etc.

[0083] An access network device is a device capable of communicating with a terminal device, and may be a base station, a relay station, or an access point. The base station may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or code division multiple access (CDMA) network, a node base station (NB) in a wideband code division multiple access (WCDMA) system, an evolved NB (eNB or eNodeB) in long term evolution (LTE), a radio controller in a cloud radio access network (CRAN) scenario, a base station device in a future 5G network, an access network device in a future evolved PLMN, or a wearable device or an in-vehicle device. In an embodiment of the present application, an apparatus configured to implement the functions of an access network device may be the access network device, or may be an apparatus, such as a chip system, capable of supporting the access network device in implementing the functions. The apparatus may be installed in an access network device, or may be another device capable of implementing the functions of an access network device, which is not limited here. In the embodiments of the present application, the chip system may include a chip, or may include a chip and a separate component.

[0084] A core network (CN) device corresponds to different devices in different communication systems, for example, it may correspond to a serving general packet radio service (GPRS) support node (SGSN) and / or a gateway GPRS support node (GGSN) in 3G, a mobility management entity (MME) and / or a serving gateway (S-GW) in a fourth generation (4G) communication system, or an access and mobility management function (AMF), a session management function (SMF), or a user plane function (UPF) in 5G. In an embodiment of the present application, a device configured to realize the functions of a core network device may be a core network device, or may be a device, such as a chip system, that can support a core network device in realizing the functions. The device may be installed in a core network device, or may be another device that can implement the functions of a core network device. This is not limited here.

[0085] The DN is an operator network that provides data transmission services to the user, for example, internet protocol multimedia service (IMS) or the internet.

[0086] For example, Figure 2 is a more detailed diagram of the architecture of a communication system. As shown in Figure 2, the architecture of the communication system includes a UE, an access network, a core network, and a DN.

[0087] The UE is a network terminal device such as a mobile phone or an Internet of Things terminal device.

[0088] The access network is configured to implement functions related to radio access and includes a radio access network (RAN).

[0089] For example, the RAN functions as a device that provides wireless access to the UE, and includes, but is not limited to, a base station (evolved NodeB, eNodeB), a wireless fidelity access point (Wi-Fi AP), a worldwide interoperability for microwave access base station (WiMAX BS), etc.

[0090] The core network may include any one of the following network elements: an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a unified data management (UDM) network element, and an application function (AF). For example, the functions of the aforementioned network elements are as follows:

[0091] The AMF is mainly responsible for functions such as mobility management and access authentication / authorization in a mobile network, including user registration management, reachability detection, SMF network element selection, mobility state transition management, etc. In addition, the AMF may further be responsible for transferring user policies between the UE and the PCF network element.

[0092] The SMF is primarily responsible for functions such as session management (including managing session establishment, modification, and deletion), enforcing control policies delivered by the PCF, selecting UPF network elements, and UE internet protocol (IP) address allocation in the mobile network.

[0093] As the interface to the data network, the UPF is primarily responsible for data packet routing and forwarding, mobility anchor, uplink classifier to support routing of service flows to the data network, and branching point to support multihoming Protocol Data Unit (PDU) sessions.

[0094] The PCF is responsible for providing policies such as quality of service (QoS) policies and slice selection policies to the AMF and SMF.

[0095] The UDM is configured to store user data such as subscription information and authentication / authorization information.

[0096] The AF provides services to the 3rd generation partnership project (3GPP) network and is responsible for interacting with the PCF to, for example, influence service routing and perform policy control.

[0097] See Figure 2. The interface between the UE and the AMF is N1, the interface between the AMF and the RAN is N2, the interface between the RAN and the UPF is N3, the interface between the UPF and the SMF is N4, the interface between the PCF and the AF is N5, the interface between the UPF and the DN is N6, the interface between the SMF and the PCF is N7, the interface between the AMF and the UDM is N8, the interface between the UDM and the SMF is N10, the interface between the AMF and the SMF is N11, and the interface between the UDM and the PCF is N25.

[0098] The UE accesses the DN by establishing a PDU session from the UE to the RAN, UPF, and DN.

[0099] To facilitate understanding of the technical solution provided in this application, the following briefly describes an Extended Discontinuous Reception (eDRX) configuration of a UE in an INACTIVE state. The INACTIVE eDRX configuration may be applied to the communication systems shown in Figures 1 and 2.

[0100] In existing wireless communications, for example, in a long term evolution (LTE) network or a 5G new radio (NR) network, for a UE in a radio resource control_inactive (RRC_INACTIVE) state, an RRC connection is established with the network, but the connection is suspended. When the network needs to transmit downlink data to a UE in the INACTIVE state, the network may send an access network paging (RAN paging) message to page the UE to inform the UE to establish or resume an RRC connection, or to inform the UE that a system message has changed and the UE needs to reread the changed system broadcast message, or to inform the UE to receive earthquake and tsunami warning system (ETWS) information.

[0101] Specifically, when a UE is in the INACTIVE state, from the core network's perspective, the UE is still in the CM_CONNECTED state, but the RRC connection between the UE and the access network device is suspended. In this case, when the network needs to send data to the UE in the RRC_INACTIVE state, the network needs to page the UE because the RRC connection between the UE and the access network device is suspended. In addition, in this case, the core network considers the UE to be in the CONNECTED state, so the core network does not initiate paging, but a RAN node, such as a base station (the next generation NodeB, gNodeB, gNB), initiates paging. This is called RAN paging.

[0102] To reduce power consumption, a UE in the INACTIVE state supports receiving paging messages via DRX. DRX is also called paging DRX. The DRX cycle is determined by the minimum of the following three values: a specific DRX cycle configured by the RAN, a specific DRX cycle configured by the CN (if configured), and a default DRX cycle transmitted via system broadcast. In DRX, a UE in the INACTIVE state wakes up only during DRX cycles to monitor paging messages and remains in a "sleep" state at other times, thereby reducing power consumption.

[0103] In paging DRX, a UE in INACTIVE state monitors only the physical downlink control channel (PDCCH) at a specific paging occasion (PO) in each DRX cycle. However, when monitoring a PO, the UE needs to first determine the location of the paging frame (PF) and then the location of the PO associated with the PF. A PF is a radio frame and may contain one or more POs or the starting point of a PO. A PO associated with a PF may start within the PF or after the PF.

[0104] The UE may determine the PF and PO monitored by the UE based on the paging DRX configuration parameters, as detailed below.

[0105] The PF is the system frame number (SFN) that satisfies the following formula: (SFN+PF_offset) mod T=(T div N)*(UE_ID mod N).

[0106] The index number i_s corresponding to the PO is determined according to the following formula: i_s=floor(UE_ID / N) mod Ns.

[0107] N, Ns, and PF_offset are configurations provided via system broadcast, where N represents the total number of PFs in DRX cycle T, Ns represents the total number of POs in each PF, and PF_offset is used to determine the offset of the PF.

[0108] The UE_ID and T are associated with a particular configuration of the UE. T is the DRX cycle length of the UE, measured in frames. The UE_ID can be determined in the following ways: UE_ID=5G-S-TMSI mod 1024, where 5G-S-TMSI is a shortened form of the 5G Globally Unique Temporary Identifier (5G-GUTI).

[0109] To further reduce power consumption, eDRX technology is proposed to extend the sleep period of the UE, so that the UE can enter a sleep state for a longer period of time.

[0110] The INACTIVE eDRX configuration has two different cases based on the length of the eDRX cycle.

[0111] Case 1: INACTIVE eDRX cycle is less than or equal to 10.24 seconds.

[0112] In this case, the eDRX cycle is the same as the DRX cycle. The UE wakes up every INACTIVE eDRX cycle to monitor paging messages. Specifically, when releasing the UE to the INACTIVE state, the UE's last serving base station provides the UE with an INACTIVE eDRX configuration. The UE then moves to another base station. The core network considers the INACTIVE UE to still be in the CM-CONNECTED state, so data is sent directly to the UE's last serving base station. In this case, the UE's last serving base station notifies another base station in the RNA region to initiate paging, and the last serving base station also initiates paging. If the UE detects a paging message belonging to the UE through monitoring, it responds to the paging message and initiates connection resumption from another base station. The other base station is, for example, gNB2 in Figure 3. gNB2 obtains the UE's context from the last serving base station and resumes connection with the UE.

[0113] For example, Figure 3 is a diagram of an application scenario according to an embodiment of the present application. As shown in Figure 3, the method includes S31 to S39.

[0114] S31: The AMF (UPF) sends downlink signaling (data) to the last serving base station of the UE.

[0115] The AMF sends downlink signaling to the last serving base station of the UE, or the UPF sends downlink data to the last serving base station of the UE.

[0116] S32: The last serving base station notifies other base stations in the RNA region to start paging.

[0117] The final serving base station sends the eDRX configuration of the UE to another base station to page the UE.

[0118] S33a: The last serving base station determines the paging occasion and initiates RAN paging.

[0119] S33b: gNB2 determines the paging occasion and initiates RAN paging.

[0120] S34: After receiving the paging message, the UE initiates a connection resumption request.

[0121] For example, after receiving a paging message through monitoring, the UE sends an RRC Resume Request to gNB2 to request resumption of the RRC connection.

[0122] S35: gNB2 obtains the RRC context from the last serving base station.

[0123] S36: The last serving base station transmits the RRC context to gNB2.

[0124] S37: gNB2 sends RRC connection resumption parameter information to the UE.

[0125] For example, gNB2 sends an RRC Resume to the UE.

[0126] S38: The UE completes the RRC connection resumption based on the RRC connection resumption parameters sent by the gNB2 and responds to the gNB2.

[0127] For example, the UE sends an RRC Resume Complete message to gNB2.

[0128] S39: gNB2 reports path switching information to AMF.

[0129] For example, gNB2 sends Path switch information to AMF.

[0130] In this case, before paging the UE, the gNB needs to determine the INACTIVE eDRX configuration to calculate the PF and PO. The UE_ID needs to be used to calculate the PF and PO. The UE_ID can be determined in the following way: UE_ID=5G-S-TMSI mod 4096.

[0131] Although the UE_ID for operating in the INACTIVE eDRX configuration has 12 bits, it can be seen that only a 10-bit UE Identity Index Value exists in the access network device, which does not meet the requirements for the INACTIVE eDRX configuration.

[0132] Case 2: INACTIVE eDRX cycle is greater than 10.24s.

[0133] In this case, to further reduce power consumption, a paging time window (PTW) is introduced to further extend the INACTIVE eDRX cycle, so that the INACTIVE eDRX cycle exceeds 10.24 s. The UE only needs to wake up within the PTW and monitor a specific PO within the PTW based on the INACTIVE eDRX cycle, so that the UE can sleep for a longer period of time.

[0134] The UE and the network need to determine the paging hyperframe (PH) to which the PTW belongs, the frame number corresponding to the starting position of the PTW in the PH, and the PF and PO in the PTW.

[0135] For example, a hyper system frame number (H-SFN) that satisfies the following formula may be used as PH: H-SFN mod TeDRX = (UE_ID_H mod TeDRX).

[0136] The frame number i.e.DRX corresponding to the starting position of the PTW in PH is determined according to the following formula: SFN=128*ieDRX, where: ieDRX=floor(UE_ID_H / TeDRX) mod 8.

[0137] UE_ID_H is the most significant 13 bits of the Hashed ID, which is the frame check sequence obtained by performing an operation on the least significant 32 bits of the 5G-S-TMSI according to the frame check sequence generation method. TeDRX is the UE's eDRX cycle, measured in hyperframes.

[0138] In this case, the calculation method of PF and PO is the same as the calculation method of PF and PO in Case 1. The details are as follows.

[0139] As the PF, an SFN that satisfies the following formula is used: SFN mod T = (T div N) * (UE_ID mod N).

[0140] The index number i_s corresponding to the PO is determined according to the following formula: i_s=floor(UE_ID / N) mod Ns. UE_ID=5G-S-TMSI mod 4096.

[0141] In this case, buffering data in the UPF is considered to avoid excessive buffered data for each UE accumulating in the gNB due to the UE's excessively long sleep time.

[0142] Specific steps include: before delivering the INACTIVE eDRX configuration to the UE, the core network needs to know the UE's reachable time, determine the buffer time length based on the reachable time, buffer the data until the next reachable time, and then the radio access network (NG-RAN) needs to notify the core network of related information such as the INACTIVE eDRX configuration, so that the data can be transmitted to the RAN side (S44 to S49). In this way, the gNB does not need to buffer data for an excessively long time. The reachable time is the time when the UE will next wake up and monitor paging.

[0143] For example, Figure 4 is a diagram of an application scenario according to another embodiment of the present application. As shown in Figure 4, the method includes the following steps:

[0144] S41: The UE registers with the AMF to negotiate eDRX parameters for the UE in the idle connection state CM-IDLE.

[0145] S42: The AMF transmits assistance information for the terminal in the radio resource control inactive state to the NG-RAN.

[0146] The assistance information includes eDRX configuration parameters for the UE in INACTIVE state.

[0147] For example, the AMF sends RRC_INACTIVE Assistance info information to the NG-RAN.

[0148] S43: The NG-RAN decides to release the UE to an inactive state.

[0149] S44: NG-RAN sends an N2 message to AMF.

[0150] If the eDRX cycle is greater than 10.24 s, the NG-RAN sends an N2 message to the AMF, and the N2 message includes the INACTIVE eDRX configuration parameters.

[0151] S45: The AMF sends request information to the SMF, and the request information indicates to the core network to configure a UPF for buffering downlink data.

[0152] For example, the AMF sends Nsmf_PDUSession_UpdateSMContext Request information to the SMF.

[0153] S46: The SMF and UPF perform the N4 session modification procedure.

[0154] For example, the SMF sends N4 session modification information to the UPF.

[0155] S47: The UPF buffers the downlink data during the sleep period of the UE.

[0156] S48: The SMF responds to the AMF's request information.

[0157] For example, the SMF sends an Nsmf_PDUSession_UpdateSMContext response to the AMF to respond to the Nsmf_PDUSession_UpdateSMContext Request information sent by the AMF.

[0158] S49: AMF responds to the N2 message of NG-RAN.

[0159] For example, the AMF sends an N2 response to the NG-RAN.

[0160] S410: The NG-RAN releases the UE to an inactive state and sends an eDRX configuration to the UE.

[0161] In this case, the UE is in the RRC_INACTIVE state of CM_CONNECTED in the AMF, and the UE is in the RRC_INACTIVE state in the NG-RAN.

[0162] If there is data or signaling that needs to be sent to the UE after the buffer time expires, the core network sends an N2 message to the access network device to indicate that the access network device should initiate RAN paging. After resuming the RRC connection in response to the paging, the UE notifies the UPF (S414) to release the buffer for sending subsequent data (S415a) or signaling (S415b).

[0163] S411a1: The UPF sends a notification message to the SMF to notify the SMF that downlink data has arrived.

[0164] For example, when the UPF detects that downlink data to be transmitted to the UE is present in the network, it sends Data Notification information to the AMF to notify the SMF that the downlink data has arrived.

[0165] S411a2: SMF sends the request information to AMF.

[0166] For example, the SMF sends a Namf_MT_EnableUERechability Request to the AMF to notify the AMF that downlink data has arrived.

[0167] S411a3: AMF responds to the request information sent by SMF.

[0168] For example, after receiving Namf_MT_EnableUEReachability Request sent by the SMF, the AMF responds to the message, and the response information carries the next reachable time of the UE.

[0169] S411a4: The SMF responds to the notification message sent by the UPF.

[0170] For example, the SMF sends an AMF response message to the UPF to notify the UPF when it is time to release the buffered data.

[0171] S411b: The AMF initiates NAS signaling to page the UE.

[0172] For example, when the next reachable time of the UE arrives, the AMF initiates NAS signaling to page the UE.

[0173] S412: The AMF sends an N2 interface message to the NG-RAN, where the message includes a request to request the UE to establish an RRC connection.

[0174] S413: The NG-RAN initiates RAN paging to the UE.

[0175] S414: The UE responds to the RAN paging by resuming the RRC connection and notifying the UPF to release the buffer.

[0176] S415a: The UPF initiates a user plane data session to the NG-RAN to transmit downlink data.

[0177] S415b: The AMF sends a NAS signaling session to the NG-RAN to transmit downlink data.

[0178] S416: The NG-RAN sends downlink data / NAS signaling to the UE.

[0179] When S413 is performed, before initiating RAN paging to the UE, the access network device needs to determine the INACTIVE eDRX configuration and calculate PH, PTW start position, PF, and PO. The UE_ID, T, UE_ID_H, and TeDRX must be used to calculate PH, PTW start position, PF, and PO. However, the access network device does not have either the UE_ID or the UE_ID_H.

[0180] For the problems of Case 1 and Case 2, the present application provides a paging method and a paging device for a terminal to page a UE in an INACTIVE state in an eDRX cycle.

[0181] The following describes in detail the technical solution of the present application and how the technical solution of the present application solves the aforementioned technical problems by using specific embodiments. The following describes the embodiments of the present application with reference to the accompanying drawings. This application is executed by a controller, and the following steps can be realized using software or a combination of hardware and software.

[0182] 5 is a schematic flowchart of a paging method for a terminal according to an embodiment of the present application. As shown in FIG. 5, the method includes S501 to S503.

[0183] S501: An access network device receives first information from a core network element, the first information indicating identification information of a terminal, and the identification information is used to determine a paging occasion for the terminal.

[0184] The access network device may be a gNB, and the core network element may be an AMF network element.

[0185] For example, after receiving the first information transmitted by the AMF, the gNB may determine the identification information of the UE and the PO of the UE based on the first information.

[0186] Optionally, the first information indicating the identification information of the terminal may be understood as the first information may include the identification information of the terminal, or the first information may indicate other information including the identification information of the terminal, or the first information is the identification information of the terminal.

[0187] In a possible embodiment, for example, the first information may be Core Network Assistance Information for RRC_INACTIVE, and the UE identification information may be newly added to the assistance information field (IE).

[0188] Optionally, the UE identification information may include a UE first identification information index value and a UE second identification information index value.

[0189] The first identification information index value may be an identification information index value of the terminal in the eDRX cycle, and the second identification information index value may be an identification information index value of the terminal obtained by a hash calculation in the eDRX cycle.

[0190] For example, the first identification information index value may be UE_ID, and the second identification information index value may be UE_ID_H.

[0191] The following table is an example of Core Network Assistance Information for RRC INACTIVE.

[0192] [Table 1]

[0193] In presence, M indicates mandatory and O indicates optional.

[0194] The UE identification information index value is the UE identification information index value in the existing DRX cycle and has 10 bits. The UE identification information index value in the eDRX cycle can be UE_ID.

[0195] In a possible embodiment, the terminal identification index value in the eDRX cycle may have 12 bits.

[0196] In this embodiment, the gNB may directly determine the PO of the UE based on the terminal identity index value in the eDRX cycle.

[0197] In another possible embodiment, the terminal identification index value in the eDRX cycle may have 2 bits.

[0198] In this embodiment, after receiving the assistance information, the gNB may determine a 12-bit identity index value of the terminal in the eDRX cycle, and use the assistance information in combination with the identity index value of the terminal in the existing DRX cycle in the assistance information to further determine the PO of the UE.

[0199] The terminal identification information index value obtained by hash calculation in the eDRX cycle may be UE_ID_H and may have 13 bits.

[0200] In a possible embodiment, the UE_ID may be further determined according to the following method.

[0201] An extended UE identity index value field is present in the assistance information, and the field has 16 bits, and the least significant 12 bits of the field can be used as the UE_ID.

[0202] Optionally, the UE identification information may be the least significant 32 bits of the 5G-S-TMSI.

[0203] The following table is another example of Core Network Assistance Information for RRC INACTIVE.

[0204] [Table 2]

[0205] For example, after receiving the least significant 32 bits of the 5G-S-TMSI transmitted by the AMF, the gNB may determine the UE's identity in the following manner:

[0206] For example, the lowest 12 bits of the lowest 32 bits of 5G-S-TMSI are used as UE_ID, and the highest 13 bits of the Hashed ID obtained by performing an operation on the lowest 32 bits of 5G-S-TMSI according to the frame check sequence generation method are used as UE_ID_H.

[0207] Optionally, the UE identity may alternatively be the least significant 32 bits of a serving-temporary mobile subscriber identity (S-TMSI). The method for determining the UE identity using the S-TMSI is consistent with the method for determining the UE identity using the 5G-S-TMSI. Details will not be described here.

[0208] In some possible implementations, the first information may be carried in a first message, and the first message includes an initial context setup request message (UE CONTEXT MODIFICATION REQUEST), a terminal device context modification request message (UE CONTEXT MODIFICATION REQUEST), a handover request message (HANDOVER REQUEST), or a path switch request acknowledgement message (PATH SWITCH REQUEST ACKNOWLEDGE).

[0209] For example, in the step in which the AMF creates a UE Context in the gNB using an INITIAL CONTEXT SETUP REQUEST message, the AMF may send first information to the gNB using the INITIAL CONTEXT SETUP REQUEST message.

[0210] In another example, in the step in which the AMF modifies the UE Context in the gNB using a CONTEXT MODIFICATION REQUEST message, the AMF may send first information to the gNB using a CONTEXT MODIFICATION REQUEST message.

[0211] After the identity information of the UE is determined, to determine the PO, please refer to the method for determining the PO in the above embodiment, and details will not be described here.

[0212] Please note that if the eDRX cycle does not exceed 10.24s, the 12-bit UE_ID is used to calculate the UE's PO, and if the eDRX cycle exceeds 10.24s, the 12-bit UE_ID and the 13-bit UE_ID_H are used to calculate the UE's PO.

[0213] It should be understood that after receiving the first information transmitted by the AMF, the gNB may further determine an INACTIVE eDRX configuration, e.g., an eDRX cycle, of the UE based on the first information, and provide the INACTIVE eDRX configuration to the UE to release the UE to the INACTIVE state.

[0214] S502: Receive second information from a core network element, where the second information is used to trigger access network paging of the terminal.

[0215] In this embodiment, before the reachable time of the UE arrives, the AMF may send second information to the gNB to trigger the gNB to start RAN paging of the UE.

[0216] For example, the AMF may send an N2 message to the gNB, and the N2 message may carry the second information. Upon receiving the N2 message, the gNB initiates RAN paging.

[0217] Optionally, the N2 message may alternatively carry an inactive radio network temporary identifier (I-RNTI) to explicitly indicate the identity of the paged UE.

[0218] After receiving the N2 message sent by the AMF, the gNB may determine the UE to be paged based on the I-RNTI carried in the N2 message.

[0219] Optionally, the N2 message may alternatively carry an identifier (RAN UE NGAP ID) that uniquely identifies the UE association over the NG interface in the access network device.

[0220] The RAN UE NGAP ID is used to uniquely identify a UE over the NG interface within the gNB. The gNB can use the RAN UE NGAP ID to determine the UE to be paged, and can further determine the I-RNTI of the UE using the correspondence between the RAN UE NGAP ID and the I-RNTI stored in the gNB.

[0221] In this embodiment, optionally, the N2 message sent by the AMF to the gNB may also carry first information, namely, the identification information of the UE.

[0222] The UE identification information may be a first UE identification information index value and a second UE identification information index value, or may be the least significant 32 bits of 5G-S-TMSI or the least significant 32 bits of S-TMSI. For specific implementations, please refer to S501, and details will not be described here.

[0223] S503: Perform access network paging for the terminal at the paging occasion.

[0224] For example, after determining the PO of the UE and the UE to be paged, the gNB pages the UE.

[0225] In this case, if the paging performed by the gNB for the UE fails, it indicates that the UE may move to another base station. Therefore, as the UE's last serving base station (anchor gNB), when paging the UE, the gNB also notifies another base station within the RNA region to page the UE. The UE detects the paging message belonging to the UE through monitoring, responds to the paging message, and initiates connection resumption from another base station. For a specific implementation, please refer to the embodiment shown in Figure 3. Details will not be described here.

[0226] When notifying another base station in the RNA region, for example a second gNB, to page the UE, the anchor gNB sends the UE's INACTIVE eDRX configuration to the second gNB via the Xn interface or the F1 interface.

[0227] The Xn interface is an interface for transmitting information between gNBs, and the F1 interface is an interface for transmitting information between the Central Unit (CU) and Distributed Unit (DU) of a gNB.

[0228] Optionally, the INACTIVE eDRX configuration of the UE includes information such as an I-RNTI or identity information.

[0229] In this embodiment, the gNB may receive the UE's identification information from the first information sent by the AMF, or may receive the UE's identification information from the N2 message sent by the AMF, to determine the PO of the UE and then perform paging of the UE.

[0230] In a possible embodiment, the gNB may receive identification information of a first part of the UE's identification information from the first information sent by the AMF, and may receive identification information of a second part of the UE's identification information from an N2 message sent by the AMF, in order to determine the PO of the UE so as to perform paging of the UE.

[0231] In this embodiment, the first part of the identification information may be a first identification information index value of the UE, such as UE_ID, and the second part of the identification information may be a second identification information index value of the UE, such as UE_ID_H. For specific embodiments, please refer to S501 and S502. Details will not be described here.

[0232] For example, Figure 6 is a schematic flowchart of a paging method for a terminal according to another embodiment of the present application. As shown in Figure 6, the method includes steps S601 to S605.

[0233] S601: An access network device receives first information from a core network element, where the first information indicates identification information of a terminal, and the identification information is used to determine a paging occasion for the terminal.

[0234] For the specific implementation of S601, please refer to S501, and the details will not be described here.

[0235] S602: Determine an inactive eDRX configuration of the UE based on the first information.

[0236] For example, if the first information is Core Network Assistance Information for RRC INACTIVE, the gNB may determine the INACTIVE eDRX configuration of the UE based on the information.

[0237] The INACTIVE eDRX configuration of the UE includes an eDRX cycle.

[0238] S603: Provide the UE with an inactive eDRX configuration and release the UE to an inactive state.

[0239] S604: Receive second information from a core network element, where the second information is used to trigger access network paging of the terminal.

[0240] S605: Perform access network paging for the terminal at the paging occasion.

[0241] For specific implementations of S604 and S605, please refer to S502 and S503, which will not be described in detail here.

[0242] In this embodiment of the present application, if the eDRX cycle of a UE in INACTIVE state exceeds 10.24 s, the access network device needs to further send an INACTIVE eDRX configuration to the core network element to buffer data for each UE in UPF, so as to avoid the problem that excessive buffered data accumulates in the gNB due to the UE's excessively long sleep time. For details, please refer to the embodiment shown in Figure 4. Details will not be described here.

[0243] It should be understood that the technical solutions and technical concepts provided in this application may be applied to 5G network architecture, or may also be applied to other communication systems.

[0244] 7 is a diagram of the structure of a paging device for a terminal according to one embodiment of the present application. The device 700 shown in FIG. 7 may be configured to perform steps performed by the access network device or core network element of FIG. 5 or FIG. 6. As shown in FIG. 7, the device 700 in this embodiment may include a transceiver module 710 and a processing module 720.

[0245] When the apparatus 700 is configured to implement the method performed by the access network device of FIG. 5, the transceiver module 710 may be configured to implement the operations performed by the access network device at S501, S502, and S503.

[0246] When the apparatus 700 is configured to implement the method implemented by the core network element of FIG. 5, the transceiver module 710 may be configured to implement the operations performed by the core network element at S501 and S502.

[0247] When the apparatus 700 is configured to implement the method performed by the access network device of FIG. 6, the transceiver module 710 may be configured to implement the operations performed by the access network device at S601, S603, S604, and S605.

[0248] When the apparatus 700 is configured to implement the method implemented by the core network element of FIG. 6, the transceiver module 710 may be configured to implement the operations performed by the core network element in S601 and S604, and the processing module 720 may be configured to implement S602.

[0249] 8 is a diagram of the structure of a paging device for a terminal according to another embodiment of the present application. The device 800 shown in FIG. 8 may be configured to implement the method performed by the access network device or the core network element in any of the foregoing embodiments.

[0250] 8, the device 800 of this embodiment includes a memory 810, a processor 820, a communication interface 830, and a bus 840. The memory 810, the processor 820, and the communication interface 830 are interconnected via the bus 840.

[0251] The memory 810 may be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 810 may store a program. When the program stored in the memory 810 is executed by the processor 820, the processor 820 is configured to perform the steps performed by the access network device or the core network element in the method shown in Figure 5 or Figure 6.

[0252] The processor 820 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute associated programs to implement the methods for measuring the azimuth angle of an active antenna unit in method embodiments of the present application.

[0253] The processor 820 may alternatively be an integrated circuit chip or have signal processing capabilities. In the implementation process, the steps of the method for measuring the azimuth angle of the active antenna unit in the embodiment of the present application may be performed by using integrated logic circuits of hardware in the processor 820 or by using instructions in the form of software.

[0254] The processor 820 may alternatively be a general-purpose processor, a digital signal processing (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The processor may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0255] The steps of the methods disclosed with reference to the embodiments of the present application may be directly executed by a hardware decoding processor or may be executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium well-established in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, or a register. The storage medium is located in the memory 810. The processor 820 reads the information in the memory 810 and, in combination with the processor's hardware, performs the functions required to be performed by the units included in the apparatus for measuring the azimuth angle of an active antenna unit in the present application. For example, the processor may execute the steps / functions performed by an access network device or a core network element in the manner shown in FIG. 5 or FIG. 6.

[0256] The communication interface 830 may use a transceiver device, such as, but not limited to, a walkie-talkie, to facilitate communication between the device 800 and another device or communication network.

[0257] Bus 840 may include a path for transmitting information between components of device 800 (eg, memory 810, processor 820, and communication interface 830).

[0258] It should be noted that the modules or components in the above-described embodiments may be configured as one or more integrated circuits for implementing the above-described methods, such as one or more application-specific integrated circuits (ASICs), one or more microprocessors (digital signal processors (DSPs)), or one or more field programmable gate arrays (FPGAs). As another example, if one of the above-described modules is implemented in a form in which a processing element calls program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU), or another processor capable of calling program code, such as a controller. As another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0259] All or part of the above-described embodiments may be implemented using software, hardware, firmware, software modules, or any combination thereof. When software is used to implement the embodiments, all or part of the embodiments may be realized in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded into a computer and executed, the procedures or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, or digital subscriber line (DSL)) or wireless (e.g., infrared, radio, or microwave) methods. The computer-readable storage medium may be any available medium accessible by a computer, or may be a data storage device, such as a server or data center, that integrates one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, or a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)).

[0260] The term "multiple" herein refers to two or more. The term "and / or" herein refers to a simple associative relationship between associated objects, and indicates that three relationships may exist. For example, A and / or B may indicate the following three cases: a case where only A exists, a case where both A and B exist, and a case where only B exists. In addition, the character " / " herein generally indicates an "or" relationship between associated objects, while the character " / " in an equation indicates a "division by" relationship between associated objects. In addition, it should be understood that in the description of this application, words such as "first" and "second" are used merely for distinction and cannot be understood as indicating or implying relative importance or sequence.

[0261] It will be understood that the various numbers in the embodiments of the present application are merely used for distinction to facilitate description, and are not used to limit the scope of the embodiments of the present application.

[0262] It should be understood that in the embodiments of the present application, the sequence numbers of the processes do not mean the sequence of execution, and the execution sequence of the processes should be determined according to the functions and internal logic of the processes, and should not constitute any restriction on the implementation process of the embodiments of the present application. [Explanation of symbols]

[0263] 700 equipment 710 Transceiver Module 720 Processing Module 800 equipment 810 memory 820 processor 830 Communication Interface 840 Bus

Claims

1. A method for paging a terminal, wherein the discontinuous reception cycle of a terminal in an inactive state is an extended discontinuous reception cycle, the method being applied to a first access network device side, the method comprising: receiving first information, the first information indicating an identification of the terminal, the identification information being used to determine paging occasions for the terminal; receiving second information, the second information being used to request access network paging for the terminal; performing access network paging for the terminal at the paging occasion; A method comprising:

2. receiving the second information receiving an N2 message, the N2 message carrying the second information, the second information including an inactive wireless network temporary identifier or an identifier that uniquely identifies a UE association over an NG interface in an access network device; 2. The method of claim 1, comprising:

3. receiving the first information, receiving a first message, the first message comprising an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, the first message carrying the first information; 3. The method of claim 1 or 2, comprising:

4. The method of claim 2 , wherein the N2 message further carries the first information.

5. The method according to claim 3 or 4, wherein the identification information comprises a first identification index value of the terminal and / or a second identification index value of the terminal.

6. The method of claim 5 , wherein the first identity index value is used to determine a paging frame for the terminal and / or the paging occasion for the terminal.

7. 7. The method of claim 6, wherein the first identity index value has a length of 12 bits or a length of 16 bits, and the first identity index value is determined by a 5th generation system temporary mobile subscriber identity (5G-S-TMSI).

8. 8. The method according to claim 5, wherein the second identity index value is used to determine at least one of the following information: a paging hyperframe for the terminal, a frame number corresponding to a start position of a paging time window for the terminal, a paging frame for the terminal, or the paging occasion for the terminal.

9. 9. The method of claim 8, wherein the second identity index value is the most significant 13 bits of a hashed identifier, and the hashed identifier is a frame check sequence obtained by performing an operation on the least significant 32 bits of a 5G-S-TMSI according to a frame check sequence generation method.

10. 5. The method of claim 3, wherein the identification information comprises the least significant 32 bits of a globally unique temporary terminal identifier.

11. the identification information includes a first portion of identification information and a second portion of identification information; receiving the first information, receiving a first message, the first message comprising an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, the first message carrying identification information of the first portion; receiving an N2 message, the N2 message carrying identification information of the second portion; 3. The method of claim 1 or 2, comprising:

12. 12. The method of claim 11, wherein the first part of the identification information comprises a first identification index value of the terminal, and the second part of the identification information comprises a second identification index value of the terminal.

13. The method according to claim 1 , further comprising the step of transmitting the first information.

14. 1. A method for paging a terminal, the method comprising: transmitting first information, the first information indicating identification information of the terminal, the identification information being used to determine paging occasions for the terminal; transmitting second information, the second information being used to request access network paging for the terminal; A method comprising:

15. the step of transmitting the second information sending an N2 message, wherein the N2 message carries the second information, and the second information includes an inactive wireless network temporary identifier or an identifier that uniquely identifies a UE association over an NG interface in an access network device; 15. The method of claim 14, comprising:

16. The step of transmitting the first information includes: transmitting a first message, the first message comprising an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, the first message carrying the first information; 16. The method of claim 14 or 15, comprising:

17. The method of claim 15 , wherein the N2 message further carries the first information.

18. 18. The method of claim 16 or 17, wherein the identification information comprises a first identification index value of the terminal and / or a second identification index value of the terminal.

19. 20. The method of claim 18, wherein the first identity index value is used to determine a paging frame for the terminal and / or the paging occasion for the terminal.

20. 20. The method of claim 19, wherein the first identity index value has a length of 12 bits or a length of 16 bits, and the first identity index value is determined by a 5th generation system temporary mobile subscriber identity (5G-S-TMSI).

21. 21. The method of claim 18, wherein the second identity index value is used to determine at least one of the following information: a paging hyperframe for the terminal, a frame number corresponding to a start position of a paging time window for the terminal, a paging frame for the terminal, or the paging occasion for the terminal.

22. 22. The method of claim 21, wherein the second identity index value is the most significant 13 bits of a hashed identifier, and the hashed identifier is a frame check sequence obtained by performing an operation on the least significant 32 bits of a 5G-S-TMSI according to a frame check sequence generation method.

23. 18. The method of claim 16 or 17, wherein the identification information comprises the least significant 32 bits of a globally unique temporary terminal identifier.

24. the identification information includes a first portion of identification information and a second portion of identification information; The step of transmitting the first information includes: sending a first message, the first message comprising an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request confirmation message, the first message carrying identification information of the first portion; transmitting an N2 message, the N2 message carrying identification information of the second portion; 16. The method of claim 14 or 15, comprising:

25. 23. The method of claim 22, wherein the first portion of the identification information comprises a first identification index value of the terminal, and the second portion of the identification information comprises a second identification index value of the terminal.

26. A method for paging a terminal, wherein the discontinuous reception cycle of the terminal in an inactive state is an extended discontinuous reception cycle, the method being applied to a second access network device side, the method comprising: receiving first information, the first information indicating an identification of the terminal, the identification information being used to determine paging occasions for the terminal; performing access network paging for the terminal at the paging occasion; A method comprising:

27. 27. The method of claim 26, wherein the identification information comprises a first identification index value of the terminal and / or a second identification index value of the terminal.

28. 28. The method of claim 27, wherein the first identity index value is used to determine a paging frame for the terminal and / or the paging occasion for the terminal.

29. 29. The method of claim 28, wherein the first identity index value has a length of 12 bits or a length of 16 bits, and the first identity index value is determined by a 5th generation system temporary mobile subscriber identity (5G-S-TMSI).

30. 30. The method of claim 27, wherein the second identity index value is used to determine at least one of the following information: a paging hyperframe for the terminal, a frame number corresponding to a start position of a paging time window for the terminal, a paging frame for the terminal, or the paging occasion for the terminal.

31. 31. The method of claim 30, wherein the second identity index value is the most significant 13 bits of a hashed identifier, and the hashed identifier is a frame check sequence obtained by performing an operation on the least significant 32 bits of a 5G-S-TMSI according to a frame check sequence generation method.

32. 27. The method of claim 26, wherein the identification information comprises the least significant 32 bits of a globally unique temporary terminal identifier.

33. An apparatus for paging a terminal, comprising a functional module configured to perform the method of any one of claims 1 to 13, any one of claims 14 to 25, or any one of claims 26 to 32.

34. 1. An apparatus for paging a terminal, comprising: a memory; and a processor, the memory configured to store program instructions; 32. An apparatus, wherein the processor is configured to invoke the program instructions in the memory to perform the method of any one of claims 1 to 13, any one of claims 14 to 25, or any one of claims 26 to 32.

35. 13. A computer program product comprising computer program code, which when executed on a computer enables the computer to carry out a method according to any one of claims 1 to 13, any one of claims 14 to 25 or any one of claims 26 to 32.

36. 32. A computer-readable medium having stored thereon program code for execution by a computer, the program code comprising instructions used to perform a method according to any one of claims 1 to 13, any one of claims 14 to 25, or any one of claims 26 to 32.

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