# US 10,321,428 B2 · Mobile terminal positioning method, apparatus, device, and server

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,321,428 B2
- Document ID: US10321428B2
- Status: Granted
- Kind: B2
- Application number: 15/557,774
- Filed: 2015-04-20
- Published: 2018-03-15
- Granted: 2019-06-11
- Earliest claimed: 2015-04-20
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Chao Zhong; Benfeng Wei
- Web page: https://patentgrep.com/patent/US10321428B2

## CPC

- H04W 64/003: {locating network equipment}
- G01S 5/0295: {Proximity-based methods, e.g. position inferred from reception of particular signals}
- H04W 4/20: Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
- H04W 8/02: Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management
- H04W 64/006: {with additional information processing, e.g. for direction or speed determination}
- H04W 88/18: Service support devices; Network management devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES

## Abstract

Embodiments of the present invention disclose a mobile terminal positioning method, apparatus, device, and server. When being applicable to a mobile terminal, the method includes: obtaining auxiliary positioning information, where the auxiliary positioning information includes network identifiers of different wireless networks found by the mobile terminal; reporting the auxiliary positioning information to a server, so that the server obtains current location information of the mobile terminal according to the auxiliary positioning information; and receiving the current location information delivered by the server. Therefore, the server may obtain more available information from the mobile terminal, and a coverage area relationship between multiple wireless networks in a same area may be used to narrow a positioning range, so as to obtain a more accurate location of the mobile terminal. This resolves a technical problem that positioning precision of a mobile terminal is not high in a base station positioning service.

## Claims

### Claim 1

A mobile terminal positioning method, comprising:
obtaining, by a mobile terminal, auxiliary positioning information comprising network identifiers of different wireless networks found by the mobile terminal, by:
reporting a network identifier of a current network to the server, wherein the current network is a network with which the mobile terminal has currently registered;
receiving auxiliary search information delivered by the server, wherein the auxiliary search information comprises information about another wireless network that is located in a same area as the current network, and the auxiliary search information has been screened according to a preset rule to filter out information that does not aid in positioning; and
performing a network search according to the auxiliary search information to obtain the auxiliary positioning information;
reporting the auxiliary positioning information to a server for obtaining current location information of the mobile terminal according to the auxiliary positioning information; and
receiving the current location information delivered by the server, wherein the current location information is determined according to an intersectant area obtained by superimposing coverage areas of the different wireless networks.

### Claim 2 (depends on 1)

The method according to claim 1, wherein performing the network search comprises:
performing full-band network search separately according to different types of wireless networks in the auxiliary search information to obtain the auxiliary positioning information.

### Claim 3 (depends on 2)

The method according to claim 2, wherein performing a network search comprises:
performing the network search in an idle time of a current application layer service.

### Claim 4

A mobile terminal positioning device, comprising:
a transceiver configured to:
report a network identifier of a current network to a server, wherein the current network is a network with which the mobile terminal has currently registered;
receive auxiliary search information delivered by the server, wherein the auxiliary search information comprises information about another wireless network that is located in a same area as the current network, and the auxiliary search information has been screened according to a preset rule to filter out information that does not aid in positioning;
search for network identifiers of different wireless networks according to the auxiliary search information;
a processor configured to obtain auxiliary positioning information comprising the network identifiers of the different wireless networks found by the transceiver; and
wherein the transceiver is further configured to:
report the auxiliary positioning information to the server for obtaining current location information of the mobile terminal according to the auxiliary positioning information, and
receive the current location information delivered by the server, wherein the current location information is determined according to an intersectant area obtained by superimposing coverage areas of the different wireless networks.

### Claim 5 (depends on 4)

The device according to claim 4, wherein to obtain, by the processor, the auxiliary positioning information, the transceiver is configured to perform full-band network search separately according to different types of wireless networks in the auxiliary search information to obtain the auxiliary positioning information, and send the auxiliary positioning information to the processor.

### Claim 6 (depends on 5)

The device according to claim 5, wherein to perform the network search, the transceiver is configured to perform the network search in an idle time of a current application layer service.

### Claim 7

A mobile terminal positioning server, comprising:
a transceiver configured to:
receive a network identifier that is of a current network and that is reported by a mobile terminal, wherein the current network is a network with which the mobile terminal has currently registered;
deliver screened auxiliary search information to the mobile terminal, so that the mobile terminal performs network search according to the screened auxiliary search information to obtain auxiliary positioning information; and
receive the auxiliary positioning information reported by the mobile terminal, wherein the auxiliary positioning information comprises network identifiers of different wireless networks found by the mobile terminal;
a processor configured to:
find, in a preset database according to the network identifier of the current network, at least one other wireless network that is located in a same area as the current network, and
screen auxiliary search information according to a preset rule to filter out information that does not aid in positioning and thereby produce the screened auxiliary search information, wherein the auxiliary search information comprises information about the at least one other wireless network;
obtain corresponding coverage areas of the different wireless networks according to the network identifiers of the different wireless networks, and
obtain current location information of the mobile terminal according to the coverage areas of the different wireless networks according to an intersectant area obtained by superimposing the coverage areas of the different wireless networks; and
wherein the transceiver is further configured to deliver the current location information to the mobile terminal.