WO2015161575A1

WO2015161575A1 - Method, base station, mobile management entity, and system for reporting location of user terminal

Info

Publication number: WO2015161575A1
Application number: PCT/CN2014/083223
Authority: WO
Inventors: 黄莹; 谢峰; 高音
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-04-25
Filing date: 2014-07-29
Publication date: 2015-10-29
Also published as: CN105025465B; CN105025465A

Abstract

Disclosed are a method, base station, MME, system, and computer storage medium for reporting the location of a user terminal. The method comprises: the first base station transmits location information of a UE to an MME, where the location information of the UE carries location information of the UE under the first base station and/or a second base station, both the first base station and the second base station provide the UE with radio resources, one base station between the first base station and the second base station serves as a main base station for the UE, and the other base station between the first base station and the second base station serves as an auxiliary base station for the UE.

Description

User terminal location reporting method, base station, mobility management entity and system

Technical field

The present invention relates to a wireless communication technology, and in particular, to a UE (User Equipment) location reporting method, a base station, a mobility management entity (MME, Mobility Management Entity), a system, and a computer storage medium.

Background technique

With the development of wireless multimedia services, users are increasingly demanding high data rates and user experiences, which puts higher demands on the system capacity and coverage of traditional cellular networks. In a traditional Long Term Evolution (LTE) cellular network, a macro base station provides an access service for a user equipment (UE, User Equipment) as a unique access side network element. To meet the user's demand for a higher data rate, And improve the spectrum efficiency of the cellular network. The 3rd Generation Partnership Project (3GPP) introduces a Low Power Node (LPN) as a supplement to the macro base station to provide access services for the UE. The LPN has the characteristics of low cost, low power, and easy deployment. The LPN usually has two deployment scenarios: hotspot deployment and enhanced coverage. It can effectively improve the data rate of high-rate data services in indoor or outdoor hotspots and improve the coverage of remote areas or cell edges. . The LPN is also commonly referred to as a small base station, including a home base station (HeNB), a pico base station (pico), a radio remote unit/Radio Head (RRU/RRH), and a relay node (RN, Routing Node). Wait. In a hotspot deployment scenario, in order to achieve high data rates and spectrum efficiency, a large number of small base stations need to be deployed intensively in the area.

However, since the coverage of the small cell under the small base station is small, the probability of a handover failure occurs when the medium and high speed mobile UE passes through the small base station, which affects the service continuity of the UE. In order to improve the UE mobile performance after the introduction of the small cell, the related art proposes that a basic base station (eg, a macro base station) guarantees basic coverage, and the UE always maintains a radio resource control protocol with the base station (RRC, Radio). Resource Control), and the small cell only serves as a transmission node (TP) to provide higher data rates and meet the power saving requirements of the user terminal; in this system architecture, at least two base stations provide the UE with Radio resources can be used to implement radio resource aggregation across nodes. This architecture is usually called dual-connection architecture. As shown in Figure 1, user plane data is carried out with UE 1 through Carrier 1 and Carrier 2 (U-Plane). Among the two base stations that are transmitted by Data, the primary base station (MeNB, Master eNB) with management control capability covers the macro cell (Macor cell), and the other base station is called the secondary base station (SeNB, Secondary eNB). Its coverage is small cells. The MeNB and the SeNB are connected by a non-ideal loop (backhaul). The MeNB and the SeNB exchange through the X2 interface. After the UE accesses the MeNB, the dual connection can be implemented through the SeNB adding procedure. After the SeNB is successfully added, the SeNB can perform a series of management, such as SeNB modification, SeNB release, and SeNB modification.

As shown in Figure 2, there are three possible architectures for the dual-user plane (User Plane). In architecture 1, the S1 user plane interface, that is, the S1-U interface terminates at the MeNB and the SeNB, and the solid line is the downlink in the EPS bearer 1. Data transmission path, the dotted line is the downlink data transmission path in the EPS bearer 2;

In the architecture 2, the S1-U interface terminates in the MeNB, and the radio access network (RAN, Radio Access Network) side is separated by the Evolved Packet System (EPS), and the solid line is the downlink data transmission path in the EPS bearer 1. The dotted line is the downlink data transmission path of the EPS bearer 2;

In the architecture 3, the S1-U interface is terminated by the MeNB, and the RAN side has an EPS bearer separation. For example, after the downlink data in the EPS bearer arrives at the MeNB, part of the data in a bearer such as the EPS bearer 2) can be separated and sent to the UE via the SeNB. The solid line is the downlink data transmission path in EPS bearer 1, and the dashed line is the downlink data transmission path in EPS bearer 2.

According to the dual-connected user plane protocol stack architecture, the above three architectures can be further subdivided. Currently, the dual connectivity can adopt the 1A architecture in the architecture 1 or the 3C architecture in the architecture 3;

Architecture 1A is shown in Figure 3a, that is, on the basis of the architecture 1, the S1 on the SeNB is used. The client protocol stack has a separate Packet Data Convergence Protocol (PDCP) and a Radio Link Control (RLC) protocol layer and a Media Access Control (MAC) protocol layer. The RAN side No bearing separation;

As shown in FIG. 3b, the S1 user plane protocol stack on the SeNB has an independent RLC protocol layer and a MAC protocol layer.

The MME in the LTE system may use the location reporting control process to request the base station to report the current location of the UE by using the UE related signaling, and the information reported by the base station includes the evolved universal terrestrial radio access network cell global identifier (ECGI, E-UTRAN) of the current serving cell of the UE. Cell Global Identifier), and Tracking Area Identity (TAI). The MME may set the base station to perform UE location reporting based on the requested type, for example, directly reporting, and reporting when the serving cell is changed. In a traditional LTE network, the UE has only one serving cell, and in a dual-connection architecture or a carrier aggregation (CA) scenario, the UE has multiple serving cells, and the UE cannot be implemented by using a related technical solution. Location report.

Summary of the invention

The embodiments of the present invention provide a UE location reporting method, a base station, an MME, a system, and a computer storage medium, which can implement location reporting of a UE in a dual connectivity or CA architecture.

The technical solution of the embodiment of the present invention is implemented as follows:

An embodiment of the present invention provides a method for reporting a location of a UE, where the method includes:

Sending, by the first base station, location information of the UE to the MME, where

The location information of the UE carries location information of the UE under the first base station and/or the second base station;

The first base station and the second base station provide radio resources to the UE, and one of the first base station and the second base station is a primary base station MeNB of the UE, the first base station, and the The other base station in the second base station is the secondary base station SeNB of the UE.

An embodiment of the present invention further provides a method for reporting a location of a UE, where the method includes:

Receiving, by the MME, location information of the UE sent by the first base station;

The first base station and the second base station all provide radio resources to the UE, and one of the first base station and the second base station is a primary base station of the UE, and the first base station and the Another base station in the second base station is a secondary base station of the UE.

The embodiment of the present invention further provides a first base station, where the first base station includes:

a first communication unit, configured to send location information of the UE to the MME, where

The location information of the UE carries location information of the UE under the first base station and/or the second base station; the first base station and the second base station provide radio resources to the UE, where the One of the base station and the second base station is a primary base station of the UE, and the other one of the first base station and the second base station is a secondary base station of the UE.

An embodiment of the present invention further provides an MME, where the MME includes:

a second communication unit, configured to receive location information of the UE sent by the first base station;

The embodiment of the present invention further provides a UE location reporting system, where the system includes a first base station, a second base station, and an MME;

The first base station is configured to send location information of the UE to the MME;

The MME is configured to receive location information of the UE sent by the first base station;

The embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores executable instructions, and the executable instructions are used to execute the UE location reporting method described above.

In the embodiment of the present invention, the first base station is configured to send the location information of the UE sent by the first base station connected to the UE, where the first base station is a base station to which the UE is connected under dual connectivity (may be a primary base station or a secondary base station. And the first base station supports acquiring the location information of the UE under the first base station and the second base station. Therefore, the first base station can report the location of the UE in the dual-connection architecture, and can manage the location of the UE. streamline.

DRAWINGS

Figure 1 is a schematic diagram of a dual connectivity scenario;

2 is a schematic diagram of a dual connectivity S1 user plane architecture;

Figure 3a is a schematic diagram of a dual connectivity user plane architecture 1A;

Figure 3b is a schematic diagram of a dual connectivity user plane architecture 3C;

4 is a schematic diagram 1 of a method for reporting a location of a UE according to an embodiment of the present invention;

FIG. 5 is a second schematic diagram of a UE location reporting method according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a first base station according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an MME according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a UE location reporting system according to an embodiment of the present invention;

FIG. 9 is a flowchart 1 of an implementation of UE location reporting according to an embodiment of the present invention;

10 is a second flowchart of implementing UE location reporting according to an embodiment of the present invention;

FIG. 11 is a third flowchart of implementing UE location reporting according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the features of the embodiments of the present invention and the embodiments may be combined with each other without conflict.

The embodiment of the invention describes a method for reporting a location of a UE. As shown in FIG. 4, the method includes:

The first base station and the second base station all provide radio resources to the UE, and one of the first base station and the second base station is a primary base station (MeNB) of the UE, the first base station and Another base station in the second base station is a secondary base station (SeNB) of the UE;

That is, the first base station may be a primary base station or a secondary base station. When the first base station is a primary base station, the second base station is a secondary base station; when the first base station is a secondary base station, The second base station is a primary base station.

As an implementation manner, the first base station sends the location information of the UE to the MME, including:

The first base station sends the location information of the UE to the MME by using an S1 interface message, where the S1 interface message includes at least one of the following messages:

a location report message; an S1 interface UE context release complete message; an S1 interface UE context release request message; an E-RAB (Evolved Radio Access Bearer) release response message; an evolved radio access bearer release indication message; Request message; initial UE message; uplink non-access stratum (NAS, Non-Access Stratum) transmission message; handover notification message.

As an implementation manner, the location information includes at least one of the following information:

Cell identity; TAI; cell section.

As an implementation manner, before the sending, by the base station, the location information of the UE to the MME, the method further includes:

The first base station acquires location information of the UE under the second base station, where the first base station may receive an X2 interface message from the second base station, and acquire the UE from the X2 interface message. Location information under the second base station.

As an embodiment, the method further includes:

The first base station receives the location information of the UE update sent by the second base station, and sends the location information of the UE update to the MME, where

The location information updated by the UE includes new location information of the UE under the second base station after the location information of the UE is changed in the second base station; thus, when the location of the UE is updated, The location information of the updated UE can be reported.

As an implementation manner, the location information of the UE under the first base station includes at least one of the following information:

Location information of the UE in a serving cell under the first base station;

Location information of the UE in a primary cell (Pcell) under the first base station;

Location information of the UE in a secondary cell (Scell) under the first base station;

Location information of the UE in the Pcell and the Scell under the first base station;

Correspondingly, the location information of the UE under the second base station includes at least one of the following information:

Location information of the UE in a serving cell under the second base station;

Location information of the UE in the Pcell under the second base station;

Location information of the UE in the Scell under the second base station;

Location information of the UE in the Pcell and the Scell under the second base station.

As an implementation manner, before the first base station sends the location information of the UE to the MME, the method further includes:

Receiving location reporting control information sent by the MME; the location reporting control information includes at least one of the following information:

Request type information;

Instructing the first base station to report location information of the UE under the first base station;

Instructing the first base station to report location information of the UE under the second base station;

Instructing the first base station to report location information of the UE under the first base station and the second base station; wherein the number of cells in the first base station includes the number of Scells, and the number of cells in the second base station includes Scells. For multiple.

As an implementation manner, the request type information includes at least one of the following information:

Directly reporting (ie, directly reporting the location information of the UE); reporting the UE's serving cell after the change; stopping reporting after the serving cell is changed (ie, not reporting the location information of the UE after the serving cell of the UE is changed); reporting the UE in the first Position information under a base station; reporting location information of the UE under the second base station; and reporting, after the first base station is changed (that is, when the first base station of the UE changes, reporting location information of the UE); The first base station is reported after the change (that is, when the first base station is changed, the location information of the UE is not reported); when the second base station changes and reports (that is, when the second base station changes, the location information of the UE is reported) Stopping reporting after the second base station is changed (ie, when the second base station is changed, not reporting the location information of the UE); the first base station reporting the cell after the cell change (ie, the UE is under the second base station) After the cell is changed, the location information of the UE is reported; the reporting is stopped after the cell is changed in the first base station (that is, the location information of the UE is not reported after the UE is in the cell under the second base station); After the second base station is changed, the cell is changed. Reporting; stopping reporting after the cell change in the second base station; reporting the Pcell after the Pcell is changed (that is, reporting the location information of the UE after the Pcell is changed); stopping reporting after the Pcell is changed (that is, the Pcell change of the UE) Then, the location information of the UE is not reported; the Scell is reported after the change; the reporting is stopped after the Scell is changed; the PeNB is reported after the change of the Pcell in the first base station (that is, the Pcell of the UE under the first base station is changed, and the UE is reported. Location information); stop Pcell change under the first base station After the change, the UE does not report the location information of the UE after the Pcell is changed in the first base station; and the Scell is reported after the Scell is changed by the first base station (that is, after the Scell of the UE is changed under the first base station) And reporting the location information of the UE; stopping reporting after the change of the Scell under the first base station (that is, not reporting the location information of the UE after the Scell is changed by the UE under the first base station); After the change is reported (that is, the UE reports the location information of the UE after the Pcell is changed under the second base station); the Pcell is changed after the Pcell is changed under the second base station (that is, the Pcell changed by the UE under the second base station) Then, the location information of the UE is not reported; the second base station reports the change of the Scell after the Scell is changed (that is, the location information of the UE is reported after the Scell is changed by the UE under the second base station); and stops at the second base station. The Scell is reported after the change (that is, the location information of the UE is not reported after the UE changes the Scell under the first base station).

As an embodiment, the method further includes:

When the serving cell of the UE is handed over, the first base station sends the location reporting control information to the target base station where the UE performs the serving cell handover.

The embodiment of the invention describes a method for reporting a location of a UE. As shown in FIG. 5, the method includes:

As an implementation manner, before the MME receives the location information of the UE to be sent by the first base station, the method further includes:

The MME sends location reporting control information to the first base station.

The location reporting control information includes at least one of the following information:

Request type information;

And instructing the first base station to report location information of the UE under the first base station and the second base station.

As an implementation manner, before the MME sends the location reporting control information to the first base station, the method further includes:

Determining, by the MME, whether the UE uses dual connectivity;

And determining, according to the determination result, the location reporting control information, where the MME determines whether the UE uses dual connectivity, and may be implemented in the following manner:

Determining, by the locally stored information, whether the UE uses dual connectivity;

Or the MME determines whether the UE uses dual connectivity according to the location reporting assistance information sent by the first base station or the second base station; and the location reporting assistance information is used to identify whether the UE uses dual connectivity. Information; the location reporting assistance information includes at least one of the following information:

a dual connectivity indication; identification information of a cell accessed by the UE; and identifier information of the base station accessed by the UE.

The embodiment of the present invention describes a first base station. As shown in FIG. 6, the first base station includes:

The first storage unit 61 is configured to store location information of the UE.

The first communication unit 62 is configured to send the location information of the UE to the MME, where

As an embodiment, the first communication unit 62 is further configured to send the location information of the UE to the MME by using an S1 interface message, where the S1 interface message includes the following message. At least one:

Location report message; S1 interface UE context release complete message; S1 interface UE context release request message; E-RAB release response message; E-RAB release indication message; path transfer request message; initial UE message; uplink non-access layer NAS transmission Message; switch notification message.

Cell identifier; TAI; cell portion.

As an implementation manner, the first base station further includes:

The obtaining unit 63 is configured to acquire location information of the UE under the second base station before the first communication unit 62 sends the location information of the UE to the MME.

As an implementation manner, the acquiring unit 63 is further configured to receive, by using the first communications unit 62, an X2 interface message from the second base station, and obtain, by using the X2 interface message, the UE at the second base station. Location information below.

As an embodiment, the first communication unit 62 is further configured to receive the location information of the UE update sent by the second base station, and send the location information of the UE update to the MME, where

The location information updated by the UE includes new location information of the UE under the second base station after the location information of the UE is changed by the second base station.

Location information of the UE in a serving cell under the first base station;

Location information of the UE in the Pcell under the first base station;

Location information of the UE in the Scell under the first base station;

Location information of the UE in a serving cell under the second base station;

Location information of the UE in the Pcell under the second base station;

Location information of the UE in the Scell under the second base station;

As an implementation manner, the location reporting control information includes at least one of the following information:

Request type information;

Directly reporting; reporting the change of the serving cell; stopping reporting after the change of the serving cell; reporting the location information of the first base station; reporting the location information of the second base station; reporting the first base station after the change; stopping at the The first base station is reported after the change; the second base station is reported after the change; the second base station is reported to be changed after the second base station is changed; the first base station is reported after the cell is changed; and the cell is stopped after the first base station is changed. The second base station reports the cell change after the cell is changed; stops reporting after the cell change in the second base station; reports the Pcell after the change; stops reporting after the Pcell is changed; reports the Scell after the change; stops reporting after the Scell is changed; Reporting that the Pcell is changed after the first base station is changed; stopping reporting after the Pcell is changed in the first base station; reporting the Scell change after the first base station is changed; and stopping reporting after the Scell is changed in the first base station; After the Pcell is changed, the Pcell is reported; the Pcell is stopped after the second base station is changed; the second base station is reported after the Scell is changed; and the SeNB is stopped under the second base station. Ll is reported after the change.

As an embodiment, the first communication unit 62 is further configured to: when the serving cell of the UE is handed over, send the location reporting control information to the target base station where the UE performs a serving cell handover.

In a practical application, the first storage unit 61 may be implemented by a non-volatile storage medium in the first base station; the first communication unit 62 may be implemented by a receiver and a transmitter in the first base station; the obtaining unit 63 It can be implemented by a central processing unit (CPU) in a first base station, a digital signal processor (DSP), or a Field Programmable Gate Array (FPGA).

The embodiment of the present invention further describes an MME. As shown in FIG. 7, the MME includes:

The second communication unit 71 is configured to receive location information of the UE sent by the first base station;

The second storage unit 72 is configured to store location information of the UE, where

As an embodiment, the second communication unit 71 is further configured to send the location reporting control information to the first base station before receiving the location information of the UE to be sent by the first base station.

As an implementation manner, the MME further includes: a determining unit 73 and a determining unit 74; wherein

The determining unit 73 is configured to determine whether the UE uses dual connectivity before the second communication unit 71 sends the location reporting control information to the first base station.

The determining unit 74 is configured to determine the location reporting control information according to the determination result of the determining unit 73.

In an embodiment, the second communication unit is further configured to receive location reporting assistance information sent by the first base station or the second base station;

The determining unit 73 is further configured to determine, according to the saved information, whether the UE uses dual connection;

Alternatively, it is determined whether the UE uses dual connectivity according to the location reporting assistance information received by the second communication unit 71.

In one embodiment, the location reporting assistance information is information used to identify whether the UE uses dual connectivity; the location reporting assistance information includes at least one of the following information:

In a practical application, the second communication unit 71 may be implemented by a receiver and a transmitter in the MME; the second storage unit 72 may be implemented by a non-volatile storage medium in the MME; the determining unit 73 and the determining unit 74 may be implemented by CPU, DSP or FPGA implementation in MME.

The embodiment of the present invention further describes a UE location reporting system, as shown in FIG. 8, including a first base station 81, a second base station 82, and an MME 83;

The first base station 81 is configured to send location information of the UE to the MME 83;

The MME 83 is configured to receive location information of the UE sent by the first base station 81, where

The location information of the UE carries location information of the UE under the first base station 81 and/or the second base station 82;

The first base station 81 and the second base station 82 all provide radio resources to the UE, and one of the first base station 81 and the second base station 82 is the primary base station of the UE, and the first base station 81 and The other base station in the second base station 82 is a secondary base station of the UE.

As an embodiment, the first base station 81 is further configured to send the location information of the UE to the MME 83 by using an S1 interface message, where the S1 interface message includes at least one of the following messages:

Location report message; S1 interface UE context release complete message; S1 interface UE context release request message; E-RAB release response message; E-RAB release indication message; path transfer Request message; initial UE message; uplink non-access stratum NAS transport message; handover notification message.

As an implementation manner, the first base station 81 is further configured to acquire location information of the UE under the second base station 82 before transmitting the location information of the UE to the MME 83.

As an embodiment, the first base station 81 is further configured to receive an X2 interface message from the second base station 82, and obtain location information of the UE under the second base station 82 from the X2 interface message.

As an implementation manner, the first base station 81 is further configured to receive the location information of the UE update sent by the second base station 82, and send the location information of the UE update to the MME 83, where

The location information updated by the UE includes new location information of the UE under the second base station 82 after the location information of the UE is changed by the second base station 82.

As an implementation manner, the location information of the UE under the first base station 81 includes at least one of the following information:

Location information of the UE in a serving cell under the first base station 81;

Location information of the UE in the Pcell under the first base station 81;

Location information of the UE in the Scell under the first base station 81;

Location information of the UE in the Pcell and the Scell under the first base station 81;

Correspondingly, the location information of the UE under the second base station 82 includes at least one of the following information:

Location information of the UE in a serving cell under the second base station 82;

Location information of the UE in the Pcell under the second base station 82;

Location information of the UE in the Scell under the second base station 82;

Location information of the UE in the Pcell and the Scell under the second base station 82.

As an implementation manner, the first base station 81 is further configured to receive the location reporting control information sent by the MME 83 before transmitting the location information of the UE to the MME 83.

As an implementation manner, the first base station 81 is further configured to: when the serving cell of the UE is handed over, send the location reporting control information to the target base station where the UE performs serving cell handover.

As an embodiment, the MME 83 is further configured to send the location reporting control information to the first base station 81 before receiving the location information of the UE to be transmitted by the first base station 81.

As an implementation manner, the MME 83 is further configured to: before sending the location reporting control information to the first base station 81, determine whether the UE uses dual connectivity; and determine the location reporting control information according to the determination result.

As an implementation manner, the MME 83 is further configured to determine, according to locally saved information, whether the UE uses dual connectivity;

Alternatively, the MME 83 determines whether the UE uses dual connectivity according to the location reporting assistance information sent by the first base station 81 or the second base station 82.

The embodiment of the invention further describes a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the UE location reporting method shown in FIG. 4 or FIG. 5.

The technical solution described in the embodiment of the present invention will be described below with the first base station as the primary base station and the second base station as the secondary base station.

It should be noted that the following method embodiments are applicable to the dual connectivity user plane architecture 1A or the dual connectivity user plane architecture 3C. The HeNB, which is the MeNB or the SeNB, can be connected to the MME through the HeNB GW, and the S1 message exchanged between the MME and the MeNB/SeNB can be forwarded by the HeNB gateway (GW, GateWay). As the HeNB of the MeNB or the SeNB can be connected to other base stations through the X2 GW, the X2 message exchanged between the MeNB/SeNB and other base stations, and the X2 message exchanged between the MeNB and the SeNB can be forwarded by the X2 GW.

The following describes the technical solution described in the embodiment of the present invention by using the location report control message of the MME to trigger the location of the MeNB to report the UE. FIG. 9 is a schematic diagram of the UE according to the embodiment of the present invention. The flow chart of the implementation of the location report, as shown in FIG. 9, includes the following steps:

In step 901, the MeNB sends the location reporting assistance information to the MME by using the UE-related S1 signaling.

The location reporting assistance information is information used to indicate whether the UE uses dual connectivity, for example, may include at least one of the following information: a dual connectivity indication (ie, the UE uses dual connectivity); identification information of a cell accessed by the UE; Identification information of the base station. The UE may determine whether the UE uses dual connectivity according to the identifier information of the UE accessing the cell or the identifier information of the base station accessed by the UE. The UE-related S1 signaling includes: an initial UE message, an initial context setup response message, and a path transfer request message.

In step 902, the MME determines whether the UE uses dual connectivity.

The MME may determine according to locally saved information, for example, if the UE has multiple S1-U downlink transmission endpoints, the UE is considered to use dual connectivity. If the MME receives the location reporting assistance information from the base station, it may determine whether the UE uses the dual connection according to the location reporting assistance information.

Step 903: The MME sends a location reporting control message to the MeNB according to the determination result, to request the base station to report the location information of the UE.

The location reporting control message includes location reporting control information, where the MME may determine the location reporting control information according to whether the UE uses the dual connectivity determination result. When determining that the UE uses the dual connectivity, the location reporting control information may include at least one of the following information. :

1) request type information;

2) information for indicating that the base station reports the location of the UE under the MeNB;

3) information for indicating that the base station reports the location of the UE under the SeNB;

4) information for indicating that the base station reports the location of the UE under the MeNB and the SeNB;

When it is determined that the UE does not use the dual connection, the location reporting control information may include request type information.

The request type information includes at least one of the following information:

Report directly; the service cell is reported after the change; the report is stopped after the service cell is changed; Position information of the MeNB; report the location information of the SeNB; report the MeNB after the change; stop reporting after the MeNB changes; report the change after the SeNB changes; stop reporting after the change of the SeNB; report the cell change after the MeNB changes; After the cell change is performed, the SeNB reports the cell change after the cell is changed; the primary cell (Pcell, Primary Cell), that is, the cell that establishes the RRC connection with the UE is reported and changed; the cell is reported to be changed after the Pcell is changed; the secondary cell (Scell, The secondary cell is reported after the change; the Scell is reported after the change of the Scell; the Pcell is changed after the MeNB is changed; the Pcell is reported to be reported after the change of the Pcell in the MeNB; the Scell is reported after the change of the Scell in the MeNB; the Scell is changed after the MeNB is changed, and the Pcell is changed under the SeNB. After the PeNB is changed, the Scell is reported as the Pcell or the Scell. The SeNB is reported as the Pcell or the Scell.

It should be noted that the location reporting control information sent by the MME may not include location information for indicating that the base station reports the UE under the MeNB and/or the SeNB.

Step 904: The MeNB sends a location report message to the MME according to the location report control message sent by the MME, and the location information of the UE is used. The location information of the UE includes the location information of the UE under the MeNB and/or the SeNB.

The location information of the UE includes at least one of the following information: ECGI; TAI; cell portion information.

For example, when the MeNB receives the location report control information sent by the MME and the request type is directly reported, and the location report control information includes information for indicating that the base station reports the location of the MeNB under the UE, the MeNB reports the MeNB where the UE is currently located. Location information within the serving cell (which may be Pcell and/or Scell), including ECTI and TAI.

For example, when the MeNB receives the location reporting control information sent by the MME and the request type is changed by the SeNB, and the location reporting control information includes information for indicating that the base station reports the location of the SeNB under the UE, when the SeNB of the UE is changed, Will trigger the MeNB to UE The current location information is reported, and the current location information of the UE includes at least location information of the serving cell (which may be Pcell and/or Scell) of the UE under the SeNB.

For example, the location reporting control information sent by the MME does not include information for indicating that the base station reports the location of the UE in the MeNB or the SeNB, and the MeNB determines whether to report the location information of the UE under the MeNB and/or the SeNB.

It should be noted that the SeNB may send the serving cell information of the UE under the SeNB to the MeNB through the X2 interface, so that the MeNB performs location reporting according to the location information of the obtained serving cell (including the Pcell and/or the Scell) of the UE under the SeNB. After the UE changes the location of the serving cell under the SeNB, for example, after the UE changes the location in the Pcell or the Scell under the SeNB, the SeNB may notify the MeNB through the X2 interface message.

The following describes the technical solution of the embodiment of the present invention by using the MeNB to report the location information of the UE in the E-RAB release process of the UE. FIG. 10 is a schematic flowchart of the implementation process of reporting the UE according to the embodiment of the present invention. 10, including the following steps:

In step 1001, the MeNB sends the location reporting assistance information to the MME by using the UE-related S1 signaling.

The location reporting assistance information is information for identifying whether the UE uses dual connectivity. For example, the location information may include at least one of the following information: a dual connectivity indication; identity information of a cell accessed by the UE; and identity information of the base station accessed by the UE. The UE related S1 signaling may include an initial UE message, an initial context setup response message, and a path transfer request message.

In step 1002, the MME determines whether the UE uses dual connectivity.

The MME may determine whether the UE uses the dual connection according to the locally saved information, for example, if the UE has multiple S1-U downlink transmission endpoints, it determines that the UE uses the dual connection; if the MME receives the location reporting auxiliary information from the base station, Whether the UE uses dual connectivity is determined according to the location reporting assistance information.

Step 1003: The MeNB sends an E-RAB release indication message to the MME to trigger the MME to initiate an E-RAB release process.

Before the step 1003, the MME may send the location reporting control information to the MeNB in the initial context setup request message, the E-RAB setup request message, or the UE context modification request message, to trigger the MeNB to perform the UE according to the received location reporting control information. Location reporting,

When the MeNB determines that the received location reporting control information includes information indicating that the location of the MeNB and/or the SeNB is reported, the MeNB carries the current location information of the UE to the MME in the E-RAB release indication message; The current location information includes location information of the UE under the MeNB and/or the SeNB; the location information of the UE includes at least one of the following information: ECGI; TAI; cell portion.

When the MeNB determines that the location reporting control information sent by the MME does not include information for indicating that the base station reports the location of the UE in the MeNB or the SeNB, the MeNB determines whether to report the location information of the MeNB and/or the SeNB of the UE.

In step 1004, the MME sends an E-RAB release command message to the MeNB to perform E-RAB release.

The E-RAB release command message may include location reporting control information, where the location reporting control information includes information indicating that the base station reports the location of the MeNB and/or the SeNB under the UE.

In step 1005, the MeNB sends an E-RAB release response message to the MME.

The MeNB may carry the current location information of the UE in the E-RAB release response message; the current location information of the UE includes information of the location of the UE under the MeNB and/or the SeNB. For example, the location information of the UE includes at least one of the following information: ECGI; TAI; cell portion information.

The MeNB may perform the location reporting process of the UE according to the received location reporting control information. If the location reporting control information sent by the MME does not include information for indicating that the base station reports the location of the MeNB/SeNB under the UE, the MeNB may Determining whether to report location information under the MeNB and/or the SeNB of the UE.

The SeNB may send, by using an X2 interface, location information of the serving cell of the UE under the SeNB to The MeNB is configured to enable the MeNB to obtain information about the serving cell (including the Pcell and/or the Scell) of the UE under the SeNB, and perform location reporting. For example, after the UE changes the Pcell or the Scell under the SeNB, the SeNB may notify the MeNB by using an X2 interface message.

The following is an example of the MeNB reporting the location of the UE in the UE context release process. FIG. 11 is a schematic flowchart 3 of the implementation process of the UE location reporting according to the embodiment of the present invention. As shown in FIG. 11, the method includes the following steps:

In step 1101, the MeNB sends the location reporting assistance information to the MME by using the UE-related S1 signaling.

The location reporting assistance information is used to identify whether the UE uses dual connectivity information, for example, may include at least one of the following information: a dual connectivity indication, identification information of a cell accessed by the UE, and identification information of the base station accessed by the UE. The UE related S1 signaling includes an initial UE message, an initial context setup response message, and a path transfer request message.

In step 1102, the MME determines whether the UE uses dual connectivity.

The MME may determine, according to the locally saved information, for example, if the UE has multiple S1-U downlink transmission endpoints, it determines that the UE uses the dual connection; if the MME receives the location reporting assistance information from the base station, the MME may determine, according to the location reporting auxiliary information, Whether the UE uses dual connectivity.

Step 1103: The MeNB sends a UE context release request message to the MME to trigger the MME to initiate a UE context release process.

The MeNB may carry the current location information of the UE in the context release request message, where the current location information of the UE includes location information of the UE under the MeNB and/or the SeNB; for example, the location information of the UE includes at least one of the following information: ECGI; TAI; .

The MME may send the reporting control information to the MeNB in the initial context setup request message, the E-RAB setup request message, or the UE context modification request message, to trigger the MeNB to perform location reporting processing of the UE, and report the location control information. The information for indicating the location of the MeNB and/or the SeNB where the UE is reported by the base station is included in the base station;

If the MeNB determines that the location reporting control information sent by the MME does not include indicating the base station When the information about the location information of the MeNB/SeNB is reported, the MeNB may determine whether to report the location information of the MeNB and/or the SeNB of the UE.

Step 1104: The MME sends a UE context release command message to the MeNB to perform UE context release.

The location release command message may include location reporting control information, where the location reporting control information includes information indicating that the base station reports the location of the MeNB and/or the SeNB.

Step 1105: The MeNB sends a UE context release complete message to the MME.

The MeNB may carry the current location information of the UE in the Context Release Complete message, where the current location information of the UE includes location information of the UE under the MeNB and/or the SeNB. For example, the location information includes at least one of the following information: ECGI; TAI; cell portion.

The MeNB may perform the location reporting of the UE according to the received location reporting control information. If the location reporting control information sent by the MME does not include information for indicating that the base station reports the location information of the MeNB or the SeNB where the UE is located, the MeNB may Determining whether to report location information under the MeNB and/or the SeNB of the UE.

The SeNB may send the serving cell information of the UE under the SeNB to the MeNB through the X2 interface, so that the MeNB obtains the information of the serving cell (including the Pcell and/or the Scell) of the UE under the SeNB, and performs location reporting; for example, the Pcell of the UE under the SeNB. Or the Scell changes, the SeNB may notify the MeNB through the X2 interface message.

It should be noted that, in the embodiment of the present invention, the reporting of the UE is performed in the E-RAB release process and the UE context release process. The MeNB may also pass the location information of the UE through the path transfer request message, the initial UE message, The uplink NAS transmits a message, and the handover notification message is reported.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention may be employed in one or more of its A computer program product embodied on a computer usable storage medium (including but not limited to disk storage and optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

A user terminal UE location reporting method; the method includes:

Transmitting, by the first base station, the location information of the UE to the mobility management entity MME;

The location information of the UE carries location information of the UE under the first base station and/or the second base station;

The first base station and the second base station provide radio resources to the UE, and one of the first base station and the second base station is a primary base station MeNB of the UE, the first base station, and the The other base station in the second base station is the secondary base station SeNB of the UE.
The method according to claim 1, wherein the first base station sends the location information of the UE to the MME, including:

The first base station sends the location information of the UE to the MME by using an S1 interface message, where the S1 interface message includes at least one of the following messages:

Location report message; S1 interface UE context release complete message; S1 interface UE context release request message; Evolved radio access bearer E-RAB release response message; E-RAB release indication message; Path transfer request message; Initial UE message; The access layer NAS transmits a message; the notification message is switched.
The method of claim 1, wherein the location information comprises at least one of the following information:

Cell identifier; tracking area identifier TAI; cell partition cell portion.
The method of claim 1, wherein before the first base station sends the location information of the UE to the MME, the method further includes:

The first base station acquires location information of the UE under the second base station.
The method according to claim 4, wherein the acquiring, by the first base station, the location information of the UE under the second base station comprises:

Receiving, by the first base station, an X2 interface message from the second base station, from the X2 interface message And acquiring location information of the UE under the second base station.
The method of claim 1 wherein the method further comprises:

The first base station receives the location information of the UE update sent by the second base station, and sends the location information of the UE update to the MME, where

The location information updated by the UE includes new location information of the UE under the second base station after the location information of the UE is changed by the second base station.
The method according to claim 1, wherein the location information of the UE under the first base station comprises at least one of the following information:

Location information of the UE in a serving cell under the first base station;

Location information of the UE in the primary cell Pcell under the first base station;

Location information of the UE in the secondary cell Scell under the first base station;

Location information of the UE in the Pcell and the Scell under the first base station;

Correspondingly, the location information of the UE under the second base station includes at least one of the following information:

Location information of the UE in a serving cell under the second base station;

Location information of the UE in the primary cell Pcell under the second base station;

Location information of the UE in the secondary cell Scell under the second base station;

Location information of the UE in the Pcell and the Scell under the second base station.
The method according to any one of claims 1 to 7, wherein before the first base station sends the location information of the UE to the MME, the method further includes:

Receiving location reporting control information sent by the MME.
The method of claim 8, wherein the location reporting control information comprises at least one of the following information:

Request type information;

Instructing the first base station to report location information of the UE under the first base station;

Instructing the first base station to report location information of the UE under the second base station;

And instructing the first base station to report location information of the UE under the first base station and the second base station.
The method of claim 9, wherein the request type information comprises at least one of the following information:

Directly reporting; reporting the change of the serving cell; stopping reporting after the change of the serving cell; reporting the location information of the first base station; reporting the location information of the second base station; reporting the first base station after the change; stopping at the The first base station is reported after the change; the second base station is reported after the change; the second base station is reported to be changed after the second base station is changed; the first base station is reported after the cell is changed; and the cell is stopped after the first base station is changed. The second base station reports the cell change after the cell is changed; stops reporting after the cell change in the second base station; reports the Pcell after the change; stops reporting after the Pcell is changed; reports the Scell after the change; stops reporting after the Scell is changed; Reporting that the Pcell is changed after the first base station is changed; stopping reporting after the Pcell is changed in the first base station; reporting the Scell change after the first base station is changed; and stopping reporting after the Scell is changed in the first base station; After the Pcell is changed, the Pcell is reported; the Pcell is stopped after the second base station is changed; the second base station is reported after the Scell is changed; and the SeNB is stopped under the second base station. Ll is reported after the change.
The method of claim 8 wherein the method further comprises:

When the serving cell of the UE is handed over, the first base station sends the location reporting control information to the target base station where the UE performs the serving cell handover.
A method for reporting a location of a user terminal UE, the method comprising:

The mobility management entity MME receives the location information of the UE sent by the first base station;

The location information of the UE carries location information of the UE under the first base station and/or the second base station;

The first base station and the second base station all provide radio resources to the UE, and one of the first base station and the second base station is the primary base station MeNB of the UE, and the first base station And another base station in the second base station is a secondary base station SeNB of the UE.
The method according to claim 12, wherein before the MME receives the location information of the UE to be sent by the first base station, the method further includes:

The MME sends location reporting control information to the first base station.
The method according to claim 13, wherein before the MME sends the location reporting control information to the first base station, the method further includes:

Determining, by the MME, whether the UE uses dual connectivity;

And determining the location reporting control information according to the determination result.
The method according to claim 14, wherein the MME determines whether the UE uses dual connectivity, including:

Determining, by the locally stored information, whether the UE uses dual connectivity;

Or the MME determines whether the UE uses dual connectivity according to the location reporting assistance information sent by the first base station or the second base station.
The method of claim 15, wherein the location reporting assistance information comprises at least one of the following information:

a dual connectivity indication; identification information of a cell accessed by the UE; and identifier information of the base station accessed by the UE.
A first base station, the first base station includes:

a first storage unit configured to store location information of the UE;

a first communication unit, configured to send location information of the UE to the mobility management entity MME, where

The location information of the UE carries location information of the UE under the first base station and/or the second base station; the first base station and the second base station provide radio resources to the UE, where the One of the base station and the second base station is the primary base station MeNB of the UE, and the other base station of the first base station and the second base station is the secondary base station SeNB of the UE.
The first base station according to claim 17, wherein

The first communication unit is further configured to send the location information of the UE to the MME by using an S1 interface message, where the S1 interface message includes at least one of the following messages:

Location report message; S1 interface UE context release complete message; S1 interface UE context release request message; Evolved radio access bearer E-RAB release response message; E-RAB release indication message; Path transfer request message; Initial UE message; The access layer NAS transmits a message; the notification message is switched.
The first base station according to claim 17, wherein the location information includes at least one of the following information:

Cell identifier; tracking area identifier; cell partition cell portion.
The first base station according to claim 17, wherein the first base station further comprises:

And an acquiring unit, configured to acquire location information of the UE under the second base station before the first communication unit sends the location information of the UE to the MME.
The first base station according to claim 20, wherein

The acquiring unit is further configured to receive an X2 interface message from the second base station by using the first communications unit, and obtain location information of the UE under the second base station from the X2 interface message.
The first base station according to claim 17, wherein

The first communication unit is further configured to receive the location information of the UE update sent by the second base station, and send the location information of the UE update to the MME, where

The location information updated by the UE includes new location information of the UE under the second base station after the location information of the UE is changed by the second base station.
The first base station according to claim 17, wherein the location information of the UE under the first base station includes at least one of the following information:

Location information of the UE in a serving cell under the first base station;

Location information of the UE in the primary cell Pcell under the first base station;

Location information of the UE in the secondary cell Scell under the first base station;

Location information of the UE in the Pcell and the Scell under the first base station;

Correspondingly, the location information of the UE under the second base station includes at least one of the following information:

Location information of the UE in a serving cell under the second base station;

Location information of the UE in the primary cell Pcell under the second base station;

Location information of the UE in the secondary cell Scell under the second base station;

Location information of the UE in the Pcell and the Scell under the second base station.
A first base station according to any one of claims 17 to 23, wherein

The first communication unit is further configured to receive the location reporting control information sent by the MME before sending the location information of the UE to the MME.
The first base station according to claim 24, wherein the location reporting control information comprises at least one of the following information:

Request type information;

Instructing the first base station to report location information of the UE under the first base station;

Instructing the first base station to report location information of the UE under the second base station;

And instructing the first base station to report location information of the UE under the first base station and the second base station.
The first base station according to claim 25, wherein the request type information includes at least one of the following information:

Directly reporting; reporting the change of the serving cell; stopping reporting after the change of the serving cell; reporting the location information of the first base station; reporting the location information of the second base station; reporting the first base station after the change; stopping at the The first base station is reported after the change; the second base station is reported after the change; the reporting is stopped after the second base station is changed; the first base station is reported after the cell is changed; The cell is reported after the cell is changed in the first base station; the second cell is reported after the cell is changed; the cell is reported to be changed after the cell is changed in the second cell; the Pcell is reported after the cell is changed; the cell is reported to be changed after the Pcell is changed; After the change of the Scell is reported, the Pcell is reported after the change of the Scell; the Pcell is reported after the change of the Pcell in the first base station; the Pcell is reported after the change of the Pcell in the first base station; the Scell is reported after the Scell is changed, and the first base station is stopped. The lower Scell is reported after the change of the Scell; the second base station is reported after the Pcell is changed; the Pcell is stopped after the second base station is changed; the second base station is reported after the Scell is changed; and the Scell is stopped at the second base station. Reported after the change.
The first base station according to claim 24, wherein

The first communication unit sends the location reporting control information to the target base station for serving cell handover when the serving cell of the UE is handed over.
A mobility management entity MME, the MME includes:

a second communication unit, configured to receive location information of the UE sent by the first base station;

a second storage unit configured to store location information of the UE;

The location information of the UE carries location information of the UE under the first base station and/or the second base station;

The first base station and the second base station all provide radio resources to the UE, and one of the first base station and the second base station is a primary base station MeNB of the UE, the first base station and Another base station in the second base station is a secondary base station SeNB of the UE.
The MME according to claim 28, wherein

The second communication unit is further configured to send the location reporting control information to the first base station before receiving the location information of the UE to be sent by the first base station.
The MME according to claim 29, wherein the MME further comprises: a determining unit and a determining unit; wherein

The determining unit is configured to determine whether the UE uses dual connectivity before the second communication unit sends the location reporting control information to the first base station;

The determining unit is configured to determine the location reporting control information according to the determination result of the determining unit.
The MME according to claim 30, wherein

The second communication unit is further configured to receive location reporting assistance information sent by the first base station or the second base station;

The determining unit is further configured to determine, according to the saved information, whether the UE uses dual connectivity;

Or determining whether the UE uses dual connectivity according to the location reporting assistance information received by the second communication unit.
The MME according to claim 31, wherein said location reporting assistance information comprises at least one of the following information:

a dual connectivity indication; identification information of a cell accessed by the UE; and identifier information of the base station accessed by the UE.
A UE location reporting system, where the system includes a first base station, a second base station, and a mobility management entity MME;

The first base station is configured to send location information of the UE to the MME;

The MME is configured to receive location information of the UE sent by the first base station;

The location information of the UE carries location information of the UE under the first base station and/or the second base station;

The first base station and the second base station all provide radio resources to the UE, and one of the first base station and the second base station is a primary base station MeNB of the UE, the first base station and Another base station in the second base station is a secondary base station SeNB of the UE.
A computer storage medium storing executable instructions for performing the user terminal UE location reporting method according to any one of claims 1 to 11.
A computer storage medium storing executable instructions for performing the user terminal UE location reporting method according to any one of claims 12 to 16.