WO2011020262A1

WO2011020262A1 - Method and apparatus for sending a location information request signalling

Info

Publication number: WO2011020262A1
Application number: PCT/CN2009/075462
Authority: WO
Inventors: 吴昊; 高音
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-17
Filing date: 2009-12-10
Publication date: 2011-02-24
Also published as: CN101998624A

Abstract

A method for sending a location information request signalling is disclosed in the present invention. The method includes that: the network side carries identifier information of a user terminal to be located in the location information request signalling, and sends it to the base station currently serving for said user terminal. An apparatus for sending the location information request signalling is also disclosed in the present invention. The apparatus includes: a carrying unit for carrying identifier information of the user terminal to be located in the location information request signalling; and a sending unit for sending said location information request signalling to the base station currently serving for said user terminal. When the base station of the present invention locates a UE, it can directly measure the UE corresponding to the UE identifier in the location information request signalling, thereby enabling location for the specific UE. The base station can locate the specific UE, thereby improving the quality of location service.

Description

Method and device for transmitting location information request signaling

The present invention relates to a positioning technology of a user equipment (UE), and more particularly to a method and apparatus for transmitting location information request signaling. Background technique

FIG. 1 is a schematic structural diagram of a cellular wireless communication system. As shown in FIG. 1 , a cellular wireless communication system is mainly composed of a core network (CN, Core Network), an access network (RAN, Radio Access Network), and a user terminal. The core network is responsible for non-access layer transactions, such as location update of user terminals, etc. The core network is the anchor point of the user plane. The access network includes a base station, or a base station and a base station controller, and the access network is responsible for access layer transactions, such as management of radio resources. The base stations may have physical or logical connections according to actual conditions, such as the base station in FIG. 1 A connection with base station 2 or base station 3, each base station being connectable to more than one core network node. A user terminal is a device that can communicate with a cellular wireless communication network, such as a mobile phone or a notebook computer.

2 is a schematic diagram of a flat architecture of an IP-based Long Term Evolution (LTE, Long Term Evolution) cellular wireless communication system. As shown in FIG. 2, an LTE cellular wireless communication system consists of an evolved universal terrestrial radio access network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network ) and core network nodes. The core network node includes: a mobility management entity (MME, Mobility Management Entity), a service gateway (S-GW, a Serving Gateway), and the like. The MME is responsible for control plane related operations such as mobility management, non-access stratum signaling processing, and user mobility management context management; the S-GW is responsible for UE user plane data transmission, forwarding, and route switching. The E-UTRAN includes a base station (eNB), and the e Bs are logically connected to each other through an X2 interface, which is used to support mobility of the UE in the entire network, and ensures seamless handover of users. In order to support the provision of location services, the network side is provided with a network entity service mobile positioning center.

(SMLC, Serving Mobile Location Center), dedicated to the management and configuration of positioning. When the UE is located, all the positioning requests are sent to the SMLC through the MME, and the SMLC manages the eNB or the UE to perform positioning operations, such as performing positioning measurement and result reporting.

After receiving the positioning request, the SMLC selects the eNB or the UE to perform positioning, and sends the positioning information request and the positioning assistance data and the like that may be needed to the eNB or the UE. After receiving the location information request sent by the SMLC, the eNB and the UE perform location measurement according to the content indicated in the location information request, and report the measurement result periodically or eventally, or directly report the calculated location information.

However, when the SMLC instructs the eNB or the UE to perform a positioning operation, the transmitted location information request signaling only instructs the eNB or the UE to perform positioning measurement according to the specified positioning method. However, when the SMLC instructs the eNB or the UE to perform the positioning operation, it is not enough to indicate the positioning method by the base station or the UE according to the positioning method. The accuracy of the positioning measurement is not enough. In many cases, other network elements are needed to assist in positioning, and More indication information is used to assist the base station or UE to determine the object of the measurement. Summary of the invention

In view of this, the main object of the present invention is to provide a method and apparatus for transmitting location information request signaling, which enables a base station to accurately locate a UE.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for sending location information request signaling includes:

The network side carries the identifier information of the located user terminal in the location information request signaling, and sends the identifier information to the base station currently serving the user terminal.

Preferably, the method further includes:

Using the International Mobile Subscriber Identity (IMSI) information or the International Mobile Identity (IMI) information as the identification information of the user terminal; Or using the evolved absolute radio frequency channel number EARFCN, the cell physical layer identifier PCI, and the cell radio network temporary identifier C-RNTI as the identifier information of the user terminal;

Or using PCI and C-RNTI as the identification information of the user terminal;

Or using the C-RNTI as the identification information of the user terminal;

Alternatively, the S1AP interface identifier information allocated by the base station to the user terminal or the S1AP interface identifier information allocated by the mobility management entity to the user terminal is used as the identifier information of the user terminal.

Preferably, the location information request signaling further includes indication information of the positioning method.

Preferably, the method further includes:

After receiving the location information request signaling, the base station serving the user terminal performs measurement on the user terminal identified in the location information request signaling according to the measurement item involved in the location method in the location information request signaling. Or instructing the user terminal to perform measurement, and the positioning result or measurement result of the user terminal on the base station.

Preferably, the measurement item includes timing advance information and a signal arrival angle of the user terminal; or includes at least one of a received signal strength indication, a received signal power, and a received signal quality.

A sending device for location information request signaling, comprising:

a bearer unit, configured to carry the identifier information of the located user terminal in the location information request signal;

And a sending unit, configured to send the location information request signaling to a base station currently serving the user terminal.

Preferably, the identifier information of the user terminal includes:

Using the international mobile subscriber identity IMSI information or the international mobile identity IMEI information as the identification information of the user terminal;

Or, use the evolved absolute radio frequency channel number EARFCN, cell physical layer identifier PCI And the cell radio network temporary identifier C-RNTI is used as the identifier information of the user terminal; or, the PCI and the C-RNTI are used as the identifier information of the user terminal;

Or using the C-RNTI as the identification information of the user terminal;

Preferably, the device further includes:

a receiving unit, configured to receive location information request signaling;

a measuring unit, configured to perform measurement on the user terminal identified in the location information request signaling or instruct the user terminal to perform measurement according to a measurement item involved in the positioning method in the location information request signaling;

The upper unit is configured to send a positioning result or a measurement result to the user terminal to the network side. Preferably, the measurement item includes timing advance information and a signal arrival angle of the user terminal; or includes at least one of a received signal strength indication, a received signal power, and a received signal quality.

In the present invention, when the network side needs to implement the positioning of the UE by the base station, the location information request signaling sent to the base station carries the identification information of the UE to be located, so that when the base station locates the UE, the base station can directly press The UE identifier in the location information request signaling measures the corresponding UE, thereby implementing positioning of the determined UE. Thereby, the base station can implement positioning for a specific UE, and the positioning service quality is improved. DRAWINGS

1 is a schematic structural diagram of a cellular wireless communication system;

2 is a schematic diagram of a flat architecture of an IP-based long-term evolution cellular wireless communication system; FIG. 3 is a flowchart of a method for transmitting location information request signaling according to the present invention; FIG. 4 is a schematic structural diagram of a device for transmitting location information request signaling according to the present invention. detailed description

The basic idea of the present invention is: when the network side needs to implement the positioning of the UE by the base station, the location information request signaling sent to the base station carries the identification information of the UE to be located, so that when the base station locates the UE, The UE may be directly measured according to the UE identifier in the location information request signaling, thereby realizing the positioning of the determined UE. Thereby, the base station can implement positioning for a specific UE, and the positioning service quality is improved.

The present invention will be further described in detail below with reference to the accompanying drawings.

3 is a flowchart of a method for transmitting location information request signaling according to the present invention. As shown in FIG. 3, the method for transmitting location information request signaling according to the present invention includes the following steps:

Step 301: The SMLC receives a location request message sent by a location service entity (Location Service Entity) in an EPC (Evolved Packet Core), and requests location information of the specified UE.

Step 302: After receiving the location request message of the location service entity, the SMLC determines to locate the UE by using an E-CID (Evolved Cell Identity) positioning method.

Step 303: The SMLC sends the location information request signaling to the base station, where the request signaling information includes the specified UE identifier, or includes the specified UE identifier and information indicating the base station using the positioning method. The UE identifier may have the following form:

Using the UE's international mobile subscriber identity (IMSI, International Mobile Subscriber Identity), or International Mobile Identity identifying another ^{1 J (IMEI, International Mobile Equipment} Identity) as an identifier of the UE.

Or, using an evolved absolute radio frequency channel number (EARFCN, Evolved Absolute Radio Frequency Channel Number) of the cell where the UE is located, (Cell, Physical Cell Identity) and the Cell Radio Network Temporary Identifier (C-RNTI) assigned to the UE in the cell where the UE is located

The identity of the UE.

Alternatively, the PCI of the cell in which the UE is located and the C-RNTI allocated by the UE in the cell where the UE is located are used as the identifier of the UE.

The above PCI can also be replaced by the Global Cell Identity (CGI).

Alternatively, the C-RNTI allocated by the UE in the cell where the UE is located is directly used as the identifier of the UE. Alternatively, the identifier of the S1AP interface allocated by the base station for the UE to be located is used as the identifier of the UE, or the S1AP interface identifier allocated by the MME for the UE to be located is used as the identifier of the UE, or the S1AP interface identifier allocated by the base station and the MME for the UE respectively. As the identity of the UE.

Step 304: After receiving the location information request signaling, the base station performs positioning measurement on the designated UE according to the UE identifier indicated in the location information request signaling, where the positioning measurement content may be the timing advance information of the UE and the signal arrival angle, or The resource control process collects wireless signal conditions measured by the specified UE, and the measurement content may be at least one of a UE received signal strength indication, received signal power, and received signal quality. It should be noted that, for different positioning methods, the measurement items are slightly different. The corresponding relationship between the positioning method and the measurement item is determined in advance by the network side, and the network side determines the positioning method for the UE to be located, correspondingly The measurement item has also been determined. When the mapping relationship between the positioning method and the measurement item has been configured in the base station, the base station can determine the measurement item for the UE according to the positioning method in the location information request signaling. It should be noted that the above-mentioned corresponding relationship may not necessarily be configured in the base station, but is notified to the corresponding base station by the network side during the positioning measurement process.

The base station implements measurement of the foregoing measurement item of the UE, or specifies that the UE implements measurement of the measurement item. It should be understood by those skilled in the art that the measurement of the above measurement items by the base station or the UE is easy to implement, and the measurement of the above policy items is the basic capability of the base station or the UE. Step 305: The base station reports the measurement result or the determined location information of the specified UE to the SMLC by using the location information providing signaling.

The base station implements the measurement of the foregoing measurement item of the UE, or specifies that the UE implements the measurement of the measurement item, and reports the measurement item to the base station, and the base station calculates the location information of the UE according to the measurement result, and reports the calculated location information of the UE to the SMLC, or , Report the measurement results to the SMLC.

4 is a schematic structural diagram of a device for transmitting location information request signaling according to the present invention. As shown in FIG. 4, the device for transmitting location information request signaling includes a bearer unit 40 and a sending unit 41, where the bearer unit 40 is used. The identifier information of the located user terminal is carried in the location information request signaling; the sending unit 41 is configured to send the location information request signaling to the base station currently serving the user terminal. The identification information of the user terminal includes:

The IMSI or IMEI of the UE is used as the identity of the UE.

Or, the EARFCN of the cell where the UE is located, the PCI, and the C-RNTI allocated by the UE in the cell where the UE is located are used as the identifier of the UE.

The above PCI can also be replaced by CGI.

Alternatively, the C-RNTI allocated by the UE in the cell where the UE is located is directly used as the identifier of the UE. Alternatively, the S1AP interface identifier information allocated by the base station to the user terminal or the S1AP interface identifier information allocated by the mobility management entity to the user terminal is used as the identifier information of the user terminal.

The location information request signaling further includes indication information of the positioning method. As shown in FIG. 4, the transmitting apparatus of the location information request signaling of the present invention further includes a receiving unit 42, a measuring unit 43, and a reporting unit 44, wherein the receiving unit 42 is configured to receive location information request signaling; and the measuring unit 43 is configured to Measuring, by the measurement item involved in the positioning method in the location information request signaling, the user terminal identified in the location information request signaling, or instructing the user terminal to perform measurement The upper 4 unit 44 is used to send a positioning result or a measurement result to the user terminal to the network side. The measurement item includes timing advance information and a signal arrival angle of the user terminal; or includes at least one of a received signal strength indication, a received signal power, and a received signal quality.

It should be understood by those skilled in the art that the transmitting apparatus of the location information request signaling shown in FIG. 4 is provided to implement the foregoing method for transmitting the location information request signaling, and each processing unit in the apparatus shown in FIG. 4 may refer to the foregoing. As understood by the method shown in FIG. 3, its function can be realized by a program running on a processor, or can be realized by a specific logic circuit. The receiving unit 42, the measuring unit 43, and the reporting unit 44 in Fig. 4 are not essential technical features of the transmitting apparatus for realizing the position information request signaling of the present invention, and are provided only for the transmitting apparatus for optimizing the position information request signaling of the present invention.

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

Claims

Claim

A method for transmitting location information request signaling, comprising:

The network side carries the identifier information of the user terminal to be located in the location information request signaling, and sends the identifier information to the base station currently serving the user terminal.

The transmitting method according to claim 1, wherein the identification information of the user terminal comprises:

The international mobile subscriber identity code IMSI or international mobile identity IMEI information of the user terminal;

Or the evolved absolute radio frequency channel number EARFCN of the cell where the user terminal is located, the cell physical layer identifier PCI, and the cell radio network temporary identifier C-RNTI of the user terminal;

Or the PCI of the cell where the user terminal is located and the C-RNTI of the user terminal;

Or the C-RNTI of the user terminal;

Or S1AP interface identifier information allocated by the base station to the user terminal, or S1AP interface identifier information allocated by the mobility management entity to the user terminal.

The transmitting method according to claim 1, wherein the location information request signaling further includes indication information of the positioning method.

The method according to claim 3, wherein the method further comprises: after receiving the location information request signaling by the base station served by the user terminal, requesting positioning in the signaling according to the location information The measurement item involved in the method performs measurement on the user terminal identified in the location information request signaling or instructs the user terminal to perform measurement, and the positioning result or measurement result of the user terminal on the base station.

The transmission method according to claim 4, wherein the measurement item includes timing advance information and a signal arrival angle of the user terminal, or includes a received signal strength indication, a received signal power, and a received signal quality. At least one.

6. A device for transmitting location information request signaling, comprising: a bearer unit and Sending unit, where:

a bearer unit, configured to carry identifier information of the user terminal to be located in the location information request signaling;

The transmitting device according to claim 6, wherein the identification information of the user terminal comprises: an international mobile subscriber identity code IMSI or an international mobile identity identification IMEI information of the user terminal;

Or the C-RNTI of the user terminal;

The transmitting apparatus according to claim 6, wherein the location information request signaling further includes indication information of a positioning method.

The transmitting device according to claim 8, wherein the device further comprises a receiving unit, a measuring unit and an upper unit, wherein:

a receiving unit, configured to receive location information request signaling;

a measuring unit, configured to perform measurement on the user terminal identified in the location information request signaling or instruct the user terminal to perform measurement according to the measurement item involved in the positioning method in the location information request signaling;

The upper unit is configured to send a positioning result or a measurement result to the user terminal to the network side.

10. The transmitting apparatus according to claim 9, wherein the measurement item includes timing advance information and a signal arrival angle of the user terminal; or includes a received signal strength indicator. At least one of display, received signal power, and received signal quality