CN102143577B - Location method and base station controller - Google Patents

Abstract

The invention discloses a positioning method and a base station controller, belonging to the field of positioning. The method includes: the BSC receives the positioning request message sent by the MSC; obtains the U-TDOA positioning type indication, and selects the BTS/LMU that needs to participate in the TOA measurement for U-TDOA positioning; and sends a TOA measurement execution message to the selected BTS/LMU. The LMU makes the selected BTS/LMU perform measurement on the target terminal to obtain a measurement result, and returns the measurement result; receives the measurement result returned by the selected BTS/LMU, performs positioning calculation according to the measurement result to obtain the The location information of the target terminal; sending a location response message to the MSC, the location response message carrying the location information of the target terminal. The device includes: a receiving module, an acquiring and selecting module, a first sending module, a calculating module and a second sending module. In the above solution of the present invention, the BSC can control whether to adopt the U-TDOA positioning method without SMLC participating in the positioning.

Description

A positioning method and base station controller

technical field

The invention relates to the field of positioning, in particular to a positioning method and a base station controller.

Background technique

The positioning service can provide users with positioning services of different service qualities, such as the planar or three-dimensional position and speed of the target terminal, and its accuracy can reach up to 10 meters horizontally and 5 meters vertically, which can help operators deploy location-based value-added services.

Currently there is a U-TDOA (Uplink Time Difference of Arrival) positioning method, which includes the following steps:

After BSC (Base Station Controller, base station controller) receives the positioning request from MSC (Mobile Switching Center, mobile switching center), it sends a positioning request to SMLC (Serving Mobile Location Center, serving mobile positioning center). If the SMLC judges to use the U-TDOA method for positioning, it sends a U-TDOA request message to the BSC to request U-TDOA positioning for the target terminal. The BSC responds to the request message and returns a U-TDOA response message to the SMLC. The response message Including the physical channel of the current MS, TA (Timing Advance, time advance), target terminal power, cell identity, encryption and other information. According to the above information, the SMLC selects the LMUs (Location Measure Unit, positioning measurement unit) that need to participate in the TOA (Time of Arrival, time of arrival) measurement required for U-TDOA positioning, and sends the execution TOA message to these LMUs. The LMU completes the measurement and reports the measurement result to the SMLC. After the SMLC summarizes, it performs corresponding positioning calculations according to the measurement results to obtain the location information of the target terminal. The SMLC sends the location information of the target terminal to the BSC, and the BSC sends the location information of the target terminal to the MSC.

To sum up, in the prior art, the SMLC decides whether to adopt the U-TDOA positioning method. When the SMLC is a third-party device, it is impossible to control whether to adopt the U-TDOA positioning method through the BSC.

Contents of the invention

In order to solve the problem that the BSC cannot control whether to adopt the U-TDOA positioning method when the SMLC is a third-party device, the embodiments of the present invention provide a positioning method and a base station controller.

The technical solution is as follows:

A positioning method, the method comprising:

The base station controller BSC receives the location request message sent by the mobile switching center MSC;

The BSC obtains the uplink Time Difference of Arrival U-TDOA positioning type indication, and selects the base transceiver station BTS/location measurement unit LMU required for U-TDOA positioning to participate in the time of arrival TOA measurement;

The BSC sends a TOA measurement execution message to the selected BTS/LMU, so that the selected BTS/LMU performs measurement on the target terminal to obtain a measurement result, and returns the measurement result;

The BSC receives the measurement result returned by the selected BTS/LMU, and performs positioning calculation according to the measurement result to obtain the location information of the target terminal;

The BSC sends a location response message to the MSC, where the location response message carries location information of the target terminal.

A base station controller, the base station controller comprising:

A receiving module, configured to receive a location request message sent by a mobile switching center MSC;

The acquisition and selection module is used to obtain the uplink time difference of arrival U-TDOA positioning type indication, and select the base transceiver station BTS/location measurement unit LMU required for U-TDOA positioning to participate in the time of arrival TOA measurement;

A first sending module, configured to send a TOA measurement execution message to the selected BTS/LMU, so that the selected BTS/LMU performs measurement on the target terminal to obtain a measurement result, and returns the measurement result;

A calculation module, configured to receive the measurement result returned by the selected BTS/LMU, perform positioning calculation according to the measurement result to obtain the position information of the target terminal;

The second sending module is configured to send a location response message to the MSC, where the location response message carries location information of the target terminal.

The beneficial effects brought by the technical solution provided by the embodiments of the present invention are:

After receiving the positioning request message sent by the MSC, the BSC obtains the U-TDOA positioning type indication, selects the BTS/LMU that needs to participate in the TOA measurement for U-TDOA positioning, and sends a TOA measurement execution message to the selected BTS/LMU to make it Measure the target terminal and return the measurement result. BSC then performs positioning calculation according to the measurement result to obtain the location information of the target terminal. SMLC does not need to participate in positioning. BSC can control whether to use U-TDOA positioning method.

Description of drawings

FIG. 1 is a flowchart of a positioning method provided in Embodiment 1 of the present invention;

FIG. 2 is an information interaction diagram of a positioning method provided in Embodiment 2 of the present invention;

Fig. 3 is another information interaction diagram of the positioning method provided in Embodiment 2 of the present invention;

Fig. 4 is a schematic diagram of a base station controller provided in Embodiment 3 of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Example 1

Referring to Figure 1, this embodiment provides a positioning method, including:

101: The BSC receives the location request message sent by the mobile switching center MSC;

102: The BSC acquires the uplink Time Difference of Arrival U-TDOA positioning type indication, and selects the BTS (Base Transceiver Station, Base Transceiver Station)/location measurement unit LMU required for U-TDOA positioning to participate in the TOA measurement;

103: The BSC sends a TOA measurement execution message to the selected BTS/LMU, so that the selected BTS/LMU performs measurement on the target terminal to obtain a measurement result and returns the measurement result;

104: The BSC receives the measurement result returned by the selected BTS/LMU, and performs positioning calculation according to the measurement result to obtain the location information of the target terminal;

105: The BSC sends a location response message to the MSC, where the location response message carries the location information of the target terminal.

In this embodiment, after receiving the positioning request message sent by the MSC, the BSC obtains the U-TDOA positioning type indication, selects the BTS/LMU that needs to participate in the TOA measurement for U-TDOA positioning, and sends a TOA measurement execution message to the selected BTS/LMU , so that it measures the target terminal and returns the measurement result, and the BSC performs positioning calculation according to the measurement result to obtain the position information of the target terminal, without SMLC participating in positioning, and the BSC can control whether to use the U-TDOA positioning method.

Example 2

This embodiment provides a positioning method, including:

201: The MSC sends a location request message to the first BSC to start the location procedure;

Wherein, the location request message may be a BSSAP-LE (Base Station System Application Location Services Extension, base station system application part location service extension) Perform LocationRequest (location request) message.

Wherein, the first BSC is the BSC in Embodiment 1.

202: The first BSC obtains the U-TDOA positioning type indication, and selects the BTS/LMU that needs to participate in the TOA measurement for U-TDOA positioning;

Specifically, there are at least two implementation methods for the BSC to obtain the U-TDOA positioning type indication:

The first is to pre-set the configuration parameters of the BSC, and the default positioning method can be set as the U-TDOA positioning type;

The second way is to transmit the U-TDOA positioning type indication through the A interface, that is, the positioning request sent by the MSC carries the U-TDOA positioning type indication, and the BSC obtains the U-TDOA positioning type from the positioning request. For example, the Location Type (location type) in the location request indicates U-TDOA, that is, Location Type=00000110U-TDOA.

Wherein, BTS/LMU means BTS or LMU, and at least two BTS/LMUs are selected.

The BTS/LMUs required to participate in TOA measurement for U-TDOA positioning selected by the first BSC include:

The first BSC is configured with a cell and a BTS/LMU list participating in TOA measurement, as shown in Table 1, when the first BSC obtains the current target terminal to be located according to the terminal identification (such as IMSI) or cell identification carried in the positioning request message In the cell where the cell is located, the BTS/LMU participating in the TOA measurement is obtained according to the cell name or index of the cell.

Table 1

Community name or index BTS/LMU measured by TOA Affiliated BSC Cell-1 BTS-1 1st BSc Cell-2 BTS-2 1st BSc Cell-3 LMU-1 1st BSc Cell-4 BTS-3 2nd BSc Cell-5 BTS-1 2nd BSc  …  …  …

203: The first BSC sends a Perform (execution) TOA measurement message to the selected BTS/LMU;

Specifically, according to the control entity to which the selected BTS/LMU belongs, the first BSC sends a TOA measurement execution message to the selected BTS/LMU in two ways:

The first type 203a, referring to FIG. 2, if the control entity to which the selected BTS/LMU belongs is the first BSC, the first BSC directly sends a TOA measurement message to the selected BTS/LMU;

The second type 203b, referring to Figure 3, if the selected control entity to which the BTS/LMU belongs is a second BSC other than the first BSC, then the first BSC sends the first connectionless message CONNECTIONLESS INFORMATION to the MSC through the connectionless channel , the MSC forwards the first connectionless message to the selected BTS/LMU through the second BSC, and the first connectionless message carries a TOA measurement execution message.

204: Select the BTS/LMU to measure the target terminal, and obtain the measurement result;

Wherein, the target terminal may be an MS (Mobile Station, mobile station), and the measurement content includes information such as the plane or three-dimensional position and speed of the target MS, which is not limited in this embodiment.

Specifically, the BTS/LMU selects one or more carriers under the BTS/LMU according to the channel resource information allocated by the target terminal carried in the TOA measurement message, and tunes these carriers to the corresponding frequency points. Execute the start measurement time point specified by the TOA measurement message to start receiving the uplink signal of the target terminal, and calculate the arrival time point of the uplink signal, that is, the measurement result.

205: The selected BTS/LMU reports the measurement result to the first BSC;

Corresponding to step 203, according to the control entity to which the selected BTS/LMU belongs, there are two implementation methods for the selected BTS/LMU to report the measurement result to the first BSC:

The first type 205a corresponds to 203a, if the control entity to which the selected BTS/LMU belongs is the first BSC, then the selected BTS/LMU directly reports the measurement result to the first BSC;

The second type 205b corresponds to 203b. If the control entity to which the selected BTS/LMU belongs is a second BSC other than the first BSC, the selected BTS/LMU sends the second connectionless message through the second BSC through the connectionless channel. The connection message CONNECTIONLESS INFORMATION is sent to the MSC, and the MSC forwards the second connectionless message to the first BSC, and the second connectionless message carries the measurement result.

206: The first BSC performs positioning calculation according to the measurement result, and obtains the location information of the target terminal;

Specifically, the first BSC may calculate the location information of the target terminal by using an algorithm such as a hyperbola according to the pairwise difference between the measurement results reported by the selected BTS/LMU. For example, every two differences form a hyperbolic equation, and the intersection point obtained by two or more hyperbolic equations is the position of the target terminal.

207: The first BSC sends a location response message to the MSC, and the location response message carries the location information of the target terminal;

Wherein, the location response message may be a BSSAP-LE (Base Station System Application Location Services Extension, base station system application part location service extension) Perform LocationResponse (location response) message.

In addition, the first BSC and the second BSC may also establish a connection channel for transmitting the above-mentioned location-related signaling.

In this embodiment, after receiving the positioning request message sent by the MSC, the BSC obtains the U-TDOA positioning type indication, selects the BTS/LMU that needs to participate in the TOA measurement for U-TDOA positioning, and sends a TOA measurement execution message to the selected BTS/LMU , so that it measures the target terminal and returns the measurement result, and the BSC performs positioning calculation according to the measurement result to obtain the position information of the target terminal, without SMLC participating in positioning, and the BSC can control whether to use the U-TDOA positioning method.

Example 3

Referring to Figure 4, this embodiment provides a base station controller, including:

A receiving module 301, configured to receive a location request message sent by a mobile switching center MSC;

Acquisition and selection module 302, used to obtain the uplink time difference of arrival U-TDOA positioning type indication, and select the base transceiver station BTS/location measurement unit LMU required for U-TDOA positioning to participate in the time of arrival TOA measurement;

The first sending module 303 is configured to send a TOA measurement execution message to the selected BTS/LMU, so that the selected BTS/LMU performs measurement on the target terminal to obtain a measurement result, and returns the measurement result;

Calculation module 304, for receiving the measurement result returned by the selected BTS/LMU, and performing positioning calculation according to the measurement result to obtain the position information of the target terminal;

The second sending module 305 is configured to send a location response message to the MSC, where the location response message carries location information of the target terminal.

Wherein, obtaining and selecting module 302 includes:

The obtaining unit is used to obtain the U-TDOA positioning type indication from the positioning request message; or, is used to obtain the U-TDOA positioning type indication from the default positioning mode of its own configuration parameters;

The selection unit is used to select the base transceiver station BTS/location measurement unit LMU required for U-TDOA positioning to participate in the time of arrival TOA measurement.

Wherein, the first sending module 303 includes: a first sending unit or a second sending unit;

The first sending unit is used to directly send a TOA measurement execution message to the selected BTS/LMU if the control entity to which the selected BTS/LMU belongs is a base station controller;

The second sending unit is used for if the control entity to which the selected BTS/LMU belongs is a second BSC other than the base station controller BSC, the BSC sends the first connectionless message to the MSC, so that the MSC forwards the first connectionless message through the second BSC The connection message is sent to the selected BTS/LMU, and the first non-connection message carries the TOA measurement execution message.

Wherein, the computing module 304 includes a receiving unit and a computing unit;

The receiving unit is used to directly receive the measurement result returned by the selected BTS/LMU if the control entity to which the selected BTS/LMU belongs is BSC; or, if the control entity to which the selected BTS/LMU belongs is the first 2. BSC. The BSC receives the second connectionless message forwarded by the MSC. The second connectionless message is sent to the MSC by the selected BTS/LMU through the second BSC. The second connectionless message carries the measurement result;

The computing unit is configured to perform positioning calculation according to the measurement result to obtain the location information of the target terminal.

The BSC provided in this embodiment belongs to the same concept as the BSC in Embodiment 1 and the first BSC in Embodiment 2. For the specific implementation process, refer to the method embodiment for details, and will not be repeated here.

In this embodiment, after receiving the positioning request message sent by the MSC, the BSC obtains the U-TDOA positioning type indication, selects the BTS/LMU that needs to participate in the TOA measurement for U-TDOA positioning, and sends a TOA measurement execution message to the selected BTS/LMU , so that it measures the target terminal and returns the measurement result, and the BSC performs positioning calculation according to the measurement result to obtain the position information of the target terminal, without SMLC participating in positioning, and the BSC can control whether to use the U-TDOA positioning method.

All or part of the technical solutions provided by the above embodiments can be realized by software programming, and the software program is stored in a readable storage medium, such as a hard disk, an optical disk or a floppy disk in a computer.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (8)

1. a localization method, is characterized in that, described method comprises:

Base station controller BSC receives the locating request message that moving exchanging center MSC sends;

Described BSC obtains up arrival time difference U-TDOA align_type indication, and selected U-TDOA locates required participation and arrives the base transceiver station BTS/ Location Measurement Unit LMU that time T OA measures;

Described BSC sends and carries out TOA measurement message to described selected BTS/LMU, makes described selected BTS/LMU measure measurement result and return to described measurement result for target terminal;

Described BSC receives the measurement result that described selected BTS/LMU returns, and positions the positional information that calculates described target terminal according to described measurement result;

Described BSC sends location response message to described MSC, and described location response message is carried the positional information of described target terminal.

2. localization method according to claim 1, is characterized in that, described BSC obtains up arrival time difference U-TDOA align_type indication and comprises:

Described BSC obtains described U-TDOA align_type indication from described locating request message;

Or described BSC obtains described U-TDOA align_type indication from the acquiescence locate mode of self configuration parameter.

3. localization method according to claim 1, is characterized in that, described BSC sends execution TOA measurement message and comprises to described selected BTS/LMU:

If the controlled entity under described selected BTS/LMU is described BSC, described BSC directly sends and carries out TOA measurement message to described selected BTS/LMU;

Or, if the controlled entity under described selected BTS/LMU is the 2nd BSC except described BSC, described BSC sends the first connectionless information to described MSC, make described MSC forward described the first connectionless information to described selected BTS/LMU by described the 2nd BSC, described the first connectionless information carries described execution TOA and measures message.

4. localization method according to claim 1, is characterized in that, the measurement result that the described selected BTS/LMU of described BSC reception returns comprises:

If the controlled entity under described selected BTS/LMU is described BSC, described BSC directly receives the measurement result that described selected BTS/LMU returns;

Or, if the controlled entity under described selected BTS/LMU is the 2nd BSC except described BSC, described BSC receives the second connectionless information that described MSC forwards, described the second connectionless information is that described selected BTS/LMU sends to described MSC by described the 2nd BSC, and described the second connectionless information carries described measurement result.

5. a base station controller, is characterized in that, described base station controller comprises:

Receiver module, the locating request message sending for receiving moving exchanging center MSC;

Obtain and chosen module, for obtaining up arrival time difference U-TDOA align_type indication, selected U-TDOA locates required participation and arrives the base transceiver station BTS/ Location Measurement Unit LMU that time T OA measures;

The first sending module, carries out TOA measurement message to described selected BTS/LMU for sending, and makes described selected BTS/LMU measure measurement result and return to described measurement result for target terminal;

Computing module, the measurement result of returning for receiving described selected BTS/LMU, positions the positional information that calculates described target terminal according to described measurement result;

The second sending module, for sending location response message to described MSC, described location response message is carried the positional information of described target terminal.

6. base station controller according to claim 5, is characterized in that, described in obtain with chosen module and comprise:

Acquiring unit, for obtaining described U-TDOA align_type indication from described locating request message; Or, for obtain described U-TDOA align_type indication from the acquiescence locate mode of self configuration parameter;

Selected unit, locates required participation for selected U-TDOA and arrives the base transceiver station BTS/ Location Measurement Unit LMU that time T OA measures.

7. base station controller according to claim 5, is characterized in that, described the first sending module comprises: the first transmitting element or the second transmitting element;

Described the first transmitting element, if be described base station controller for the controlled entity under described selected BTS/LMU, directly send and carries out TOA measurement message to described selected BTS/LMU;

Described the second transmitting element, if be the 2nd BSC except described base station controller BSC for the controlled entity under described selected BTS/LMU, described BSC sends the first connectionless information to described MSC, make described MSC forward described the first connectionless information to described selected BTS/LMU by described the 2nd BSC, described the first connectionless information carries described execution TOA and measures message.

8. base station controller according to claim 5, is characterized in that, described computing module comprises receiving element and computing unit;

Described receiving element, if be described base station controller BSC for the controlled entity under described selected BTS/LMU, described BSC directly receives the measurement result that described selected BTS/LMU returns; Or, if the controlled entity under described selected BTS/LMU is the 2nd BSC except described BSC, described BSC receives the second connectionless information that described MSC forwards, described the second connectionless information is that described selected BTS/LMU sends to described MSC by described the 2nd BSC, and described the second connectionless information carries described measurement result;

Described computing unit, for positioning the positional information that calculates described target terminal according to described measurement result.