KR101137011B1 - Method to provide location information in a mobile communication system - Google Patents

Abstract

According to the present invention, a user equipment (UE) in a mobile communication system detects that a measurement operation is required from a base station, performs a measurement operation according to a UE location information providing mode used in the mobile communication system, and performs the measurement operation. The measurement report operation is performed according to the location information providing mode.

Description

METHOD TO PROVIDE LOCATION INFORMATION IN A MOBILE COMMUNICATION SYSTEM}

The present invention relates to a method of providing location information in a mobile communication system.

The mobile communication system is developing in the form of providing various additional services differentiated from the voice service as well as the existing voice service. In particular, in the current mobile communication system market, the profit generation of service providers through the provision of voice services has already been saturated, and thus, service providers have various additional services differentiated from the voice services, for example, user equipment (UE). Profit creation is pursued by providing various additional services such as location based services (LBS: location based services) based on location information of UE (hereinafter referred to as 'UE'). Here, representative examples of the LBS include a friend finder service, a place finder service, and a vehicle navigation service.

On the other hand, as the mobile communication system develops, the services provided by the mobile communication system are diversified, and thus, transmitting and receiving data at a large capacity and at high speed has become an important factor in determining the performance of the mobile communication system.

Currently, various standard standards are actively researched to transmit and receive large data at high speed. Representative standard standards are referred to as code division multiple access (CDMA) method. 3GPP (3rd Generation Partnership Project) standard based on 3GPP2 (3rd Generation Partnership Project 2) standard and Wideband Code Division Multiple Access (WCDMA) method There is this.

Both the 3GPP2 and 3GPP specifications provide various UE location information providing methods. Representative methods include a Cell ID (IDentifier) based method, Observed Time Difference Of Arrival (OTDOA) method, and A-GPS. (Assisted Global Positioning System (GPS) method, p-Cell method, etc.).

However, UE location information providing methods provided by the 3GPP2 and 3GPP standards, that is, cell identifier based method, OTDOA method, A-GPS method, p-Cell method, etc. Both the actual location of the UE and the large error of tens to hundreds of meters. Therefore, the UE location information providing methods provided by the 3GPP2 and 3GPP standards cannot provide accurate UE location information, and thus, the quality of the LBS provided using the incorrect UE location information is also degraded.

Accordingly, there is a need for a method of providing accurate UE location information in a mobile communication system.

The present invention proposes a method for providing location information in a mobile communication system.

The present invention proposes a method for providing UE location information corresponding to a UE location information providing mode in a mobile communication system.

The present invention proposes a method for adaptively determining a primary scrambling code (PSC) used by a location detection (LD) device in a mobile communication system.

The present invention proposes a method for determining a PSC used by an LD device without limiting the PSC used by a Radio Network Controller (RNC) in a mobile communication system.

The present invention proposes a method in which a UE performs a measurement operation and a measurement report operation corresponding to a UE location information providing mode in a mobile communication system.

The method proposed in the present invention; A method for providing location information of a user equipment (UE) in a mobile communication system, the method comprising: detecting that a base station is required to perform a measurement operation, which is an operation of measuring location measurement information which is information related to the location information of the UE; Performing the measurement operation according to the UE location information providing mode used in the mobile communication system; The UE location information providing mode includes a fixed basic scrambling code (PSC: Primary) in which the UE performs the measurement operation and the measurement report operation by using an active set and a monitored set. Fixed PSC Mode, and the UE uses the Active Set, Monitored Set, and Detected Set. An extended PSC mode for performing the measurement operation and the measurement report operation, and the UE performs the measurement operation and the measurement report operation in the same manner as the fixed PSC mode or the extended PSC mode, and detects a position. (LD: Location Detection) An adaptive PSC mode in which a PSC to be used by the device is adaptively determined, and the UE performs the measurement operation and the measurement report operation in the same manner as in the fixed PSC mode or the extended PSC mode. The PSC to be used by the LD device is one of a PSC reuse mode in which the LD device can be reused.

Another method proposed by the present invention; In the method for providing location information of a base station in a mobile communication system, if it is detected that a user equipment (UE) is required to perform a measurement operation, which is an operation of measuring location measurement information, which is information related to the location information of the UE, Performing the operation corresponding to the measurement operation execution request detection for the UE, receiving the measurement operation execution result from the UE, and transmitting the received measurement operation execution result to a location measurement server, The result of performing the measurement operation is determined according to the UE location information providing mode used in the mobile communication system, and the UE location information providing mode uses an active set and a monitored set. A fixed basic scram to perform a measurement report operation, which is an operation for reporting the measurement operation and a result of performing the measurement operation Extended Scrambling Code (PSC) mode (Fixed PSC Mode), and the UE performs the measurement operation and the measurement report operation using the Active Set, Monitored Set, and Detected Set (Detected Set) Extended PSC Mode, the UE performs the measurement operation and the measurement report operation as in the Fixed PSC Mode or the Extended PSC Mode, and the PSC to be used by the Location Detection (LD) device is adapted. An adaptive PSC mode determined as a rule, the UE performs the measurement operation and the measurement report operation in the same manner as the fixed PSC mode or the extended PSC mode, and the PSC to be used by the LD device is reused. It is characterized in that one of the PSC Reuse Mode (PSC Reuse Mode).

Another method proposed by the present invention is; In the method for providing location information of a location measurement server in a mobile communication system, when it is detected that a measurement operation, which is an operation of measuring location measurement information that is information related to location information of the UE, is required for a user equipment (UE) Requesting a base station to perform a measurement operation for the UE; and requesting the base station to perform a measurement operation for the UE; and performing a measurement operation received from the UE by the base station from the base station And determining location information of the UE by using the result of the received measurement operation, wherein the result of the measurement operation corresponds to a UE location information providing mode used in the mobile communication system. The UE location information providing mode is determined by the UE in an active set and a monitored set. a fixed basic scrambling code (PSC) mode (PSC) for performing a measurement report operation, which is an operation of reporting the measurement operation and the result of performing the measurement operation using a red set), and the UE Extended PSC mode for performing the measurement operation and the measurement report operation using a Set, a Monitored Set, and a Detected Set, and the UE is in Fixed PSC Mode or Extended PSC Mode. Similarly, the measurement operation and the measurement report operation are performed, and an adaptive PSC mode (Adaptive PSC Mode) in which a PSC to be used by a location detection (LD) device is adaptively determined, and the UE is a fixed PSC mode or an extended The measurement operation and the measurement report operation is performed as in the PSC mode, and the PSC to be used by the LD device is characterized in that one of the PSC reuse mode (PSC Reuse Mode) can be reused.

Another method proposed by the present invention is; A method of providing location information of a location detection (LD) device in a mobile communication system, the method comprising: transmitting a PSC according to a user equipment (UE) location information providing mode used in the mobile communication system; The UE location information providing mode is a measurement operation and an operation in which the UE measures location measurement information which is information related to the location information of the UE using an active set and a monitored set. A fixed basic scrambling code (PSC) mode (Fixed PSC Mode) for performing a measurement report operation, which is an operation for reporting a result of performing an operation, and the UE sets the Active Set, the Monitored Set, and the Detected Set. Extended PSC mode for performing the measurement operation and the measurement report operation using a set) and the UE is the same as in the fixed PSC mode or the extended PSC mode. It performs the measurement operation and the measurement report operation, the adaptive PSC mode (Adaptive PSC Mode) that is adaptively determined the PSC to be used by the location detection (LD) device, and the UE is fixed PSC Mode or Extended The measurement operation and the measurement report operation is performed as in the PSC mode, and the PSC to be used by the LD device is characterized in that one of the PSC reuse mode (PSC Reuse Mode) can be reused.

The present invention has the effect that can accurately provide the location information of the UE in the mobile communication system.

The present invention has the effect of making it possible to adaptively determine the PSC used by the position detection apparatus in a mobile communication system.

The present invention makes it possible to determine the PSC used by the LD device without limitation of the PSC used by the RNC in the mobile communication system, and thus has the effect of providing accurate UE location information.

1 illustrates a structure of a 3GPP mobile communication system according to an embodiment of the present invention.
2 is a flowchart illustrating an operation of a UE in a 3GPP mobile communication system according to an embodiment of the present invention.
3 is a flowchart illustrating an operation process of a base station in a 3GPP mobile communication system according to an embodiment of the present invention.
4 is a flowchart illustrating an operation process of a location measurement server in a 3GPP mobile communication system according to an embodiment of the present invention.
5 is a diagram schematically illustrating a method for providing UE location information when a 3GPP mobile communication system uses a PSC Reuse Mode according to an embodiment of the present invention.
6 is a diagram illustrating a case in which a service area of a cell changes in a 3GPP mobile communication system according to an embodiment of the present invention.
7 is a diagram schematically illustrating an example of a method for allocating a PSC to an LD device when the 3GPP mobile communication system uses the PSC Reuse Mode according to an embodiment of the present invention.
8 is a diagram schematically illustrating a method for providing UE location information in a 3GPP mobile communication system according to an embodiment of the present invention.
9 illustrates an internal structure of a UE of a 3GPP mobile communication system according to an embodiment of the present invention.
10 is a diagram illustrating an internal structure of a base station of a 3GPP mobile communication system according to an embodiment of the present invention.
11 is a diagram illustrating an internal structure of a location measurement server of a 3GPP mobile communication system according to an embodiment of the present invention.
12 illustrates an internal structure of an LD device of a 3GPP mobile communication system according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The present invention proposes a method for providing location information in a mobile communication system. Hereinafter, in describing the present invention, the mobile communication system is a 3rd generation partnership project (3GPP) based on a wideband code division multiple access (WCDMA) scheme as an example. It is assumed that the mobile communication system (hereinafter, referred to as a 3GPP mobile communication system) using the standard. The method for providing location information proposed by the present invention is based on 3GPP2 (3rd Generation Partnership Project 2) based on the Code Division Multiple Access (CDMA) scheme as well as the 3GPP mobile communication system. Various mobile communication systems such as a mobile communication system using the standard (hereinafter referred to as a 3GPP2 mobile communication system) and a WiMAX mobile communication system using the WiMAX (Worldwide Interoperability for Microwave Access) Forum Network Working Group standard. Of course, it can be used in the system.

1 is a diagram illustrating a structure of a 3GPP mobile communication system according to an embodiment of the present invention.

Before describing FIG. 1, the 3GPP mobile communication system includes a plurality of location detection devices (LDs) and a plurality of user equipments (UEs). And a plurality of base stations (BSs), a plurality of radio network controllers (RNCs), and a plurality of location measurement servers. 1, only one LD device, a UE, a base station, and a location measurement server are shown in FIG. 1 for convenience of description, and it should be noted that the RNC is not separately illustrated.

Referring to FIG. 1, the 3GPP mobile communication system includes a location detecting apparatus 110, a UE 120, a base station 130, and a location measurement server 140.

First, the LD device 110 will be described.

First, the 3GPP mobile communication system may include a plurality of RNCs, each of which is a predetermined number, for example, 512 primary scrambling codes (PSCs, hereinafter referred to as 'PSCs'). Can be used. Here, one RNC uses only a preset number of 512 PSCs, for example, 412 PSCs for base station division, and does not use other PSCs other than the PSCs used for base station division. Hereinafter, for convenience of description, the remaining PSCs other than the PSCs used for identifying the base stations will be referred to as 'reserved PSCs' (hereinafter, referred to as 'reserved PSCs').

The reserved PSCs allocated to each of the plurality of LD devices may be different from each other, may be identical to each other, and a method of allocating reserved PSCs to each of the plurality of LD devices will be described in detail below. Let's do it.

The LD device 110 transmits or continuously transmits the reserved PSC set up in advance or remotely allocated from the positioning server 140 at a predetermined period. Here, when the LD device 110 transmits the reserved PSC in the set period, the period of transmitting the reserved PSC may be changed.

The LD device 110 covers a location service area. For example, the LD device 110 covers a location service area of a small area such as a specific building or a specific business. Here, the location service area is preferably designed to have a relatively narrow area so as to detect the exact location of UEs located in the location service area. Since the design of the area of the location service area itself is not directly related to the present invention, a detailed description thereof will be omitted.

Therefore, when the UEs can detect the reserved PSC transmitted by the LD device 110, the location measurement server 140 may determine that the UEs are located in the location service area of the LD device 110. Do. As described above, since the location service area of the LD device 110 has a relatively narrow area, the location measurement server 140 may accurately measure the location of the UEs. FIG. 1 illustrates an example in which the UE 120 exists in a location service area of the LD device 110.

In addition, the LD device 110 may perform a network listening mode (NLM), which may detect a distribution state of neighboring base stations. The NLM operation may be referred to as a 'UE sniffer operation'. For example, the NLM operation may include a case in which a reserved PSC is not set in advance in the LD device 110 and a reserved PSC is set in advance in the LD device 110. However, it may be performed when an environmental change issue such as relocation or withdrawal of neighboring base stations occurs. The NLM operation will be described in detail below, and thus the detailed description thereof will be omitted. In addition, the LD device 110 may be implemented in a separate independent device form, that is, stand alone, or may be implemented in a form included in other devices such as a repeater and a relay. Of course.

On the other hand, unlike the above description, the LD device 110 may directly determine the reserved PSC to be used by the LD device 110 itself. Information is sent to the location measurement server 140.

The operation of directly determining the reserved PSC to be used by the LD device 110 by the LD device 110 will be described in detail below, and thus a detailed description thereof will be omitted.

Secondly, the UE 120 will be described as follows.

First, the UE 120 performs a measurement operation and performs a measurement report (MR) operation for reporting a result of performing the measurement operation. Here, the measurement operation and the measurement report operation is determined according to the UE location information providing mode used in the 3GPP mobile communication system, the UE location information providing mode used in the 3GPP mobile communication system is a fixed PSC mode (Fixed PSC Mode, Hereafter referred to as 'Fixed PSC Mode', extended PSC mode (hereinafter referred to as 'Extended PSC Mode'), and adaptive PSC mode (hereinafter referred to as 'Adaptive PSC Mode') It will be referred to as one of) and the PSC reuse mode (PSC Reuse Mode, hereinafter referred to as 'PSC Reuse Mode'). Measurement operations in the Fixed PSC Mode, the Extended PSC Mode, the Adaptive PSC Mode, and the PSC Reuse Mode will be described in detail below, and thus a detailed description thereof will be omitted.

Meanwhile, the UE 120 performs a measurement operation when detecting a request to perform a measurement operation from the base station 130, and the UE 120 measures measurement control from the base station 130 as an example. When the control message is received, it may be detected that a request for performing a measurement operation has occurred from the base station 130. Here, the base station 130 receives a location based services (LBS) request from the UE 120 as an example, or the UE from the location measurement server 140. When the measurement operation performed request for 110 is detected, the measurement control message is transmitted to the UE 120. There may be various reasons for the location measurement server 140 to perform the measurement operation of the UE 120, the reason for requiring the location measurement server 140 to perform the measurement operation of the UE (120) Since there is no direct connection with the present invention, a detailed description thereof will be omitted.

In addition, the UE 120 performs a measurement report (MR) message, a short message service (SMS) data, or packet data when performing a measurement report operation. report a measurement operation performance result using data, and the measurement operation performance result is, for example, a PSC of a base station measured, a reserved PSC for LD devices, and a channel for each of the measured base stations and LD devices. Location measurement information such as quality information and the like. Here, the channel quality information includes, for example, Received Signal Code Power (RSCP), and energy per chip to interference power density (Ec / No). , Hereinafter referred to as 'Ec / No', and a received signal strength indicator (RSSI: hereinafter referred to as 'RSSI').

In addition, the UE 120 may use, for example, a positioning related protocol such as a Secure User Plane Location (SUPL) protocol or a Stand Alone Serving Mobile Location Center (SMLC) protocol.

When the UE 120 receives the measurement control message from the base station 130, the operation mode is referred to as Radio Resource Connected (RRC) connection mode (hereinafter referred to as 'RRC Connected'). Mode '), and perform a measurement report operation in the RRC Connected Mode.

Third, the location measurement server 140 will be described as follows.

First, the location measurement server 140 manages reserved PSCs set in one or more RNCs or LD devices connected to the RNC. That is, the location measurement server 140 manages location information of the LD devices that are mapped one-to-one to each of the reserved PSCs. For example, the location measurement server 140 manages location information of an LD device having one-to-one mapping to each of the reserved PSCs in a form of a database in which location information of the LD device is mapped one-to-one to each of the reserved PSCs. do. In addition, the location measurement server 140 may determine the exact location of the UEs using the result of performing the measurement operation transmitted by the UEs and the database. The location measurement server 140 may request the base station 130 to perform a measurement operation of the UE 120. There may be various reasons for the location measurement server 140 to perform the measurement operation of the UE 120, the reason for requiring the location measurement server 140 to perform the measurement operation of the UE (120) Since there is no direct connection with the present invention, a detailed description thereof will be omitted.

On the other hand, when the LD device 110 directly determines the reserved PSC to be used by the LD device 110 itself, the LD device 110 provides information about the reserved PSC that the LD device 110 decides to use, the location measurement server 140. To send). In this case, since the reserved PSC is not set in advance in the LD device 110, information about the reserved PSC determined by the LD device 110 is not stored in the previously stored database. Accordingly, the location measurement server 140 maps the reserved PSC determined by the LD device 110 and the location of the LD device 110 and stores the location in the database.

Next, an operation process of a UE in a 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a flowchart illustrating an operation of a UE in a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 2, in step 211, if the UE detects a request to perform a measurement operation, the UE proceeds to step 213. Here, for example, the UE may detect a request to perform a measurement operation when a measurement control message is received from a base station. In step 213, the UE changes the operation mode to the RRC Connected Mode, and then proceeds to step 215. In step 215, the UE performs a measurement operation and proceeds to step 217. The measurement operation is determined according to the UE location information providing mode used in the 3GPP mobile communication system, and the UE location information providing mode used in the 3GPP mobile communication system includes a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, The measurement operation performed by the UE in the Fixed PSC Mode, the Extended PSC Mode, the Adaptive PSC Mode, and the PSC Reuse Mode will be described in detail below. Will be omitted.

In step 217, the UE performs a measurement report operation for reporting a result of performing the measurement operation. The measurement report operation is also determined according to the UE location information providing mode used in the 3GPP mobile communication system, the measurement performed by the UE in the Fixed PSC Mode, Extended PSC Mode, Adaptive PSC Mode, and PSC Reuse Mode Since the reporting operation will be described in detail later, the detailed description thereof will be omitted.

Next, an operation process of a base station in a 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 3.

3 is a flowchart illustrating an operation process of a base station in a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 3, first, in step 311, if the base station detects a request to perform a measurement operation on the UE, the base station proceeds to step 313. Here, the base station may detect, for example, a request for performing a measurement operation on the UE when the UE requests an LBS or receives a measurement control message from the location measurement server. In step 313, the base station performs an operation corresponding to detection of a measurement operation execution request for the UE, and then proceeds to step 315. Here, the operation corresponding to the detection operation request detection for the UE is a message indicating that the UE has requested the LBS to the location measurement server when the base station detects that the UE requests the LBS in step 311 Alternatively, when the base station receives the measurement control message from the location measurement server in step 311, it may be an operation of transmitting the measurement control message received from the location measurement server to the UE. .

In step 315, the base station receives a result of performing a measurement operation from the UE, and proceeds to step 317. The result of performing the measurement operation received by the base station from the corresponding UE may vary according to a UE location information providing mode used in the 3GPP mobile communication system, and the UE may include the fixed PSC mode, the extended PSC mode, and the adaptive PSC mode. Since the results of the measurement operation reported in each of the PSC Reuse Modes will be described in detail below, the detailed description thereof will be omitted.

In step 317, the base station transmits a result of performing a measurement operation received from the UE to a location measurement server.

Next, an operation process of the location measurement server in the 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 4.

4 is a flowchart illustrating an operation of a location measurement server in a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 4, if it is detected in step 411 that the location measurement server needs to perform a measurement operation on the UE, the process proceeds to step 413. Here, the location measurement server may detect that it is necessary to perform a measurement operation on the UE for various reasons, and the reason for detecting that the location measurement server needs to perform the measurement operation on the UE is not directly related to the present invention. The detailed description thereof will be omitted here.

In step 413, the location measurement server requests a base station to perform a measurement operation for the UE, and proceeds to step 415. In step 415, the location measurement server receives the measurement result performed by the UE from the base station and proceeds to step 417. The measurement operation performance result report received by the location measurement server from the UE may vary according to a UE location information providing mode used in the 3GPP mobile communication system, and the UE may report the fixed PSC mode, the extended PSC mode, and the adaptive. Since the results of performing the measurement operation transmitted in each of the PSC mode and the PSC Reuse Mode will be described in detail below, the detailed description thereof will be omitted.

In step 417, the location measurement server checks whether the PSC included in the received measurement operation result is a reserved PSC. If the PSC included in the received measurement operation result is a reserved PSC, the location measurement server proceeds to step 419. In step 419, the location measurement server detects an LD device to which a reserved PSC included in the received measurement operation result is mapped using a database, and uses the location information of the detected LD device to locate the UE. Determined by information.

On the other hand, if the PSC included in the received measurement operation execution result is not the reserved PSC in step 417, the location measurement server proceeds to step 421. In step 421, the location measurement server performs a corresponding operation using a PSC included in the received measurement operation execution result, and an operation when the PSC included in the received measurement operation execution result is not a reserved PSC. Since there is no direct connection with the present invention, a detailed description thereof will be omitted here.

In addition, although FIG. 4 illustrates a case in which the location measurement server directly detects the necessity of performing a measurement operation on the UE and determines UE location information, the location measurement server does not need to directly detect the necessity of performing a measurement operation on the UE. When the measurement operation performance result transmitted by the UE is received from the base station, the UE location information may be determined using the received measurement operation performance result. In this case, the location measurement server does not perform the operations of steps 411 and 413 of FIG. 4.

On the other hand, although not shown in a separate drawing, in the 3GPP mobile communication system, the LD device transmits a reserved PSC set in advance at a predetermined cycle or continuously, or performs an NLM operation so that the LD device itself The reserved PSC to be used may be directly determined, and the determined reserved PSC may be transmitted at a predetermined period or continuously. In this case, when the LD device itself directly determines the reserved PSC to use, the LD device should transmit information on the reserved PSC determined by the LD device itself to the location measurement server.

Next, operations of the LD device, the UE, the base station, and the location measurement server in the Fixed PSC Mode, the Extended PSC Mode, the Adaptive PSC Mode, and the PSC Reuse Mode will be described below.

Before describing the operations of the LD device, the UE, the base station, and the location measurement server in the Fixed PSC Mode, the Extended PSC Mode, the Adaptive PSC Mode, and the PSC Reuse Mode, they are used in a 3GPP mobile communication system. Active Set (hereinafter referred to as "Active Set"), Monitored Set (hereinafter referred to as "Monitored Set"), and Detected Set (hereinafter referred to as "Detected Set"). Each will be described as follows.

First, the active set includes neighbor cells having a channel quality equal to or greater than a predetermined first threshold value among neighbor cells included in the neighbor cell list provided by the base station, and the neighbor includes the active set. The cells become handoff candidate cells. The UE transmits a measurement operation performed result on all neighbor cells included in the active set to the base station.

Secondly, the Monitored Set includes the same neighbor cells as the neighbor cell list, and neighbor cells included in the Monitored Set represent neighbor cells that the UE should constantly monitor. The UE transmits to the base station only the result of performing a measurement operation on neighboring cells having a channel quality equal to or greater than a second threshold value among preset neighboring cells included in the monitored set.

Third, the Detected Set includes neighboring cells that are not included in the neighboring cell list, but whose channel quality is equal to or greater than a predetermined third threshold. The UE may or may not transmit the result of performing a measurement operation on all neighbor cells included in the Detected Set to the base station as needed.

First, operations of the LD device, the UE, the base station, and the location measurement server in the fixed PSC mode will be described below.

First, in a 3GPP mobile communication system, one base station can store a predetermined number, for example, 32 neighboring cell information, and the 32 neighboring cell information is included in the neighboring cell list. Thus, if there are less than 32, e.g., 28 neighboring cells around the cell where the UE is currently being serviced, i.e. serving cells, information about 4 LD devices will be included in the neighbor cell list. Can be.

(1) UE operation

When the UE receives the measurement control message from the base station, the UE transitions to the RRC Connected Mode and performs the measurement operation. Since the 3GPP mobile communication system assumes that the fixed PSC mode is used, the UE performs the measurement report operation to activate the measurement operation. Transmits the measurement operation performed on the neighboring cells included in the set and the measurement operation performed on the neighboring cells having the channel quality equal to or greater than a second threshold value among the neighboring cells included in the monitored set to the location measurement server through the base station. . That is, when the 3GPP mobile communication system uses the fixed PSC mode, the UE can perform the measurement operation on only neighbor cells included in the neighbor cell list.

As described above, when the 3GPP mobile communication system uses the fixed PSC mode, since the UE can perform the measurement operation only for the neighbor cells included in the neighbor cell list, one base station can use it. The number of reserved PSCs is limited to the number of reserved PSCs that can be included in the neighbor cell list. However, since the UE performs a measurement operation only on neighbor cells included in the neighbor cell list, the UEs located in the location service area of the LD device mapped to the reserved PSC included in the neighbor cell list are not included. The location information can be detected accurately.

(2) LD device operation

The LD device transmits the reserved PSC set in advance at a predetermined cycle or continuously.

(3) base station operation

When the base station detects a request to perform a measurement operation for the UE from the location measurement server, that is, when the measurement control message for the UE is received from the location measurement server, the base station transmits a measurement control message to the UE, and the measurement received from the UE. Send the result of performing the operation to the positioning server. In this case, since the 3GPP mobile communication system uses the fixed PSC mode, a measurement operation result received from the UE is based on a channel quality equal to or greater than a second threshold value among neighbor cells included in an active set and neighbor cells included in a monitored set. It includes a result of performing a measurement operation on adjacent cells having a.

(4) positioning server operation

When the location measurement server needs to perform a measurement operation on the UE, it requests the base station to perform a measurement operation on the UE, that is, transmits a measurement control message for the UE to the base station, and then performs a measurement operation performed by the UE from the base station. Receive. In this case, since the 3GPP mobile communication system uses the fixed PSC mode, a measurement operation result received from the UE is based on a channel quality equal to or greater than a second threshold value among neighbor cells included in an active set and neighbor cells included in a monitored set. It includes a result of performing a measurement operation on adjacent cells having a.

The location measurement server determines the location information of the UE by using the channel quality information and the database for each of the reserved PSCs included in the received measurement operation result and LD devices using the reserved PSCs. For example, the location measurement server detects an LD device indicating the best channel quality information among channel quality information of LD devices using the reserved PSCs, and uses the location information of the detected LD device as location information of the UE. Decide

Secondly, operations of the LD device, the UE, the base station, and the location measurement server in the extended PSC mode will be described.

(1) UE operation

When the UE receives the measurement control message from the base station, the UE transitions to the RRC Connected Mode and performs the measurement operation. Since the 3GPP mobile communication system assumes that the Extended PSC Mode is used, the UE performs the measurement report operation to activate the measurement operation. Result of performing measurement operation on neighboring cells included in the set, Result of performing measurement operation on neighboring cells having channel quality equal to or greater than a second threshold value among neighboring cells included in the monitored set, and Adjacent included in the Detected Set The result of performing the measurement operation on the cells is transmitted to the location measurement server through the base station. That is, when the 3GPP mobile communication system uses the extended PSC mode, the UE can perform the measurement operation on not only neighbor cells included in the neighbor cell list but also neighbor cells not included in the neighbor cell list. Do.

As described above, when the 3GPP mobile communication system uses an extended PSC mode, the UE performs a measurement operation on not only neighbor cells included in the neighbor cell list but also neighbor cells not included in the neighbor cell list. Since it is possible, the number of reserved PSCs that can be used by one base station is not limited to the number of reserved PSCs that can be included in the neighbor cell list. Of course, since the number of reserved PSCs that can be used by one RNC is also limited, the number of reserved PSCs that can be used by one base station is limited to within the number of reserved PSCs that can be used by one RNC, but the 3GPP mobile communication This is much higher than when the system uses Fixed PSC Mode.

Therefore, when the Extended PSC Mode is used in an area requiring very accurate location information of the UE, the effect is very good.

(2) LD device operation

The LD device transmits the reserved PSC set in advance at a predetermined cycle or continuously.

(3) base station operation

When the base station detects a request to perform a measurement operation for the UE from the location measurement server, that is, when a measurement control message for the UE is received from the location measurement server, the base station transmits a measurement control message to the UE, and the measurement operation received from the UE. Send the execution result to the positioning server. In this case, since the 3GPP mobile communication system uses an extended PSC mode, a result of performing a measurement operation received from the UE is a channel equal to or greater than a second threshold value among neighbor cells included in an active set and neighbor cells included in a monitored set. It includes a result of performing a measurement operation on neighboring cells having a quality and neighboring cells included in the Detected Set.

(4) positioning server operation

When the location measurement server needs to perform a measurement operation on the UE, it requests the base station to perform a measurement operation on the UE, that is, transmits a measurement control message for the UE to the base station, and then performs a measurement operation performed by the UE from the base station. Receive. In this case, since the 3GPP mobile communication system uses an extended PSC mode, a result of performing a measurement operation received from the UE is a channel equal to or greater than a second threshold value among neighbor cells included in an active set and neighbor cells included in a monitored set. It includes a result of performing a measurement operation on neighboring cells having a quality and neighboring cells included in the Detected Set.

The location measurement server determines the location information of the UE by using the channel quality information and the database for each of the reserved PSCs included in the received measurement operation result and LD devices using the reserved PSCs. For example, the location measurement server detects an LD device indicating the best channel quality information among channel quality information of LD devices using the reserved PSCs, and uses the location information of the detected LD device as location information of the UE. Decide

Third, operations of the LD device, the UE, the base station, and the location measurement server in the adaptive PSC mode will be described below.

(1) UE operation

When the UE receives a measurement control message from the base station, the UE transitions to the RRC connected mode and performs a measurement operation. When the 3GPP mobile communication system uses the adaptive PSC mode, the UE uses the fixed PSC mode in the 3GPP mobile communication system. It may operate in the same manner as in the case, or may operate in the same manner as when the 3GPP mobile communication system uses the extended PSC mode. Since the operation of the 3GPP mobile communication system using the fixed PSC mode and the 3GPP mobile communication system using the extended PSC mode are the same as described above, a detailed description thereof will be omitted.

(2) LD device operation

The reserved PSC set in the LD device in both the 3GPP mobile communication system using the fixed PSC mode and the extended PSC mode is set when the LD device is released as a product or when the LD device is installed. will be. Therefore, the reserved PSC set in the LD device is not changed until the operator directly resets using a manual. However, if the operator changes the reserved PSC assigned to the LD device using a manual, an error may occur.

Therefore, when the 3GPP mobile communication system uses the adaptive PSC mode, when the LD device is newly installed, moved, or removed, and when the base station is newly installed, moved, or removed, the LD device itself is an adjacent cell. The information is retrieved, and the search result and the location information of the LD device itself are transmitted to the location measurement server. In this case, the operation of searching for the neighbor cell information by the LD device is an NLM operation. Also, the LD device uses the management communication function such as a management communication function, for example, a network monitoring service (NMS) function, ie, the NLM operation. The execution result and the location information of the LD device may be transmitted to the location measurement server.

Meanwhile, the LD device transmits the search result and location information of the LD device itself, and then receives a reserved PSC to be used by the LD device from the location measurement server.

The LD device performs the NLM operation at predetermined intervals, and transmits the result of performing the NLM operation and location information of the LD device itself to the location measurement server.

Meanwhile, in the above, when the LD device searches for neighbor cell information, transmits the search result and location information of the LD device itself to a location measurement server, and receives a reserved PSC to be used by the LD device from the location measurement server. It was described.

However, unlike this, the LD device searches for an idle reserved PSC along with neighbor cell information, transmits the search result and the location information of the LD device itself to the location measurement server, and then the LD device from the location measurement server. Of course, if a reserved PSC is notified of use, it is also possible. In this case, the location measurement server may determine the reserved PSC to be allocated to the LD device in consideration of the idle reserved PSC.

(3) base station operation

When the base station detects a request to perform a measurement operation for the UE from the location measurement server, that is, when a measurement control message for the UE is received from the location measurement server, the base station transmits a measurement control message to the UE, and the measurement operation received from the UE. Send the execution result to the positioning server. Here, when the 3GPP mobile communication system uses the adaptive PSC mode, the result of performing a measurement operation received from the UE may be the same as when the 3GPP mobile communication system uses the fixed PSC mode, or the 3GPP mobile communication system uses the extended PSC mode. It may be the same as when using. When the 3GPP mobile communication system uses the fixed PSC mode and the 3GPP mobile communication system uses the extended PSC mode, the results of performing the measurement operation received from the UE are the same as described above. .

(4) positioning server operation

When the location measurement server needs to perform a measurement operation on the UE, it requests the base station to perform a measurement operation on the UE, that is, transmits a measurement control message for the UE to the base station, and then performs a measurement operation performed by the UE from the base station. Receive. In this case, since the 3GPP mobile communication system uses the adaptive PSC mode, the result of performing the measurement operation received from the UE may be the same as when the 3GPP mobile communication system uses the fixed PSC mode, and the 3GPP mobile communication system is extended. It may be the same as using the PSC mode. When the 3GPP mobile communication system uses the fixed PSC mode and the 3GPP mobile communication system uses the extended PSC mode, the results of performing the measurement operation received from the UE are the same as described above. .

The location measurement server determines the location information of the UE by using the channel quality information and the database of the reserved PSCs included in the received measurement operation result and LD devices using the reserved PSCs. For example, the location measurement server detects an LD device using a reserved PSC indicating the best channel quality information among channel quality information of the LD devices using the reserved PSCs, and stores the location information of the detected LD device. Determined by the location information of the UE.

On the other hand, since the 3GPP mobile communication system uses the adaptive PSC mode, the location measurement server receives the neighbor cell information retrieved from the LD device and the location information of the LD device from the LD device. In this case, the positioning server determines a reserved PSC to be allocated to the LD device by using a preset PSC determination method, and informs the LD device of the reserved PSC. Here, the location measurement server may notify the LD device of the determined reserved PSC by using a management communication function, for example, a management communication function such as an NMS function.

The location measurement server allocates the determined reserved PSC to the LD device, updates the database by mapping the allocated reserved PSC and location information to the LD device.

On the other hand, as described above, the LD device may perform the NLM operation at predetermined intervals, or when the LD device itself determines that the NLM operation needs to be performed, the LD device performs the NLM operation. The NLM operation may be performed when an update request is received from the location measurement server. The LD device transmits the result of performing the NLM operation and the location information of the LD device to the location measurement server, and the location measurement server does not transmit the result of performing the NLM operation and the location information of the LD device itself in the setting period. If the LD device exists, the NLM requests the LD device to perform an NLM operation or deletes the LD device from the database. Here, the location measurement server may request to perform the NLM operation to the corresponding LD device using an alarm message as an example.

Fourth, operations of the LD device, the UE, the base station, and the location measurement server in the PSC Reuse Mode will be described below.

First, when a 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, or an adaptive PSC mode, the number of reserved PSCs that one RNC can use is limited. Accordingly, the present invention proposes a PSC Reuse Mode for reusing a PSC to solve the limitation of the number of reserved PSCs.

Next, a method of providing UE location information when the 3GPP mobile communication system uses the PSC Reuse Mode according to an embodiment of the present invention will be described with reference to FIG. 5.

5 is a diagram schematically illustrating a method for providing UE location information when a 3GPP mobile communication system uses a PSC Reuse Mode according to an embodiment of the present invention.

Referring to FIG. 5, first, an LD device 520 is located in a service area of a serving cell 510 of a UE 530, and it is assumed that the UE 530 is located in a location service area of the LD device 520. Let's do it.

The location information of the LD device 520 is stored in a database of a location measurement server (not shown) together with cell information of the serving cell 510 in which the LD device 520 is located, and from the UE 530. The location measurement server that receives the result of performing the measurement operation, if the received measurement operation performed includes the PSC allocated to the LD device 520, the cell information of the serving cell, that is, the cell identifier ( The PSC of the LD device mapped to ID (ID: IDentifier) is searched, and if there is a matching PSC, the location information of the LD device of the corresponding PSC is determined as the location information of the UE.

On the other hand, the database is as shown in Table 1 below.

In Table 1, Cell # l represents a cell identifier, LD # m represents LD location information, and PSC # n represents PSC.

Referring to FIG. 5, first, an LD device 520 is located in a service area of a serving cell 510 of a UE 530, and it is assumed that the UE 530 is located in a location service area of the LD device 520. Let's do it. Since the 3GPP mobile communication system uses the PSC Reuse Mode, the UE 530 may perform the measurement operation and the measurement report operation in the same manner as the 3GPP mobile communication system uses the fixed PSC mode, and the 3GPP mobile communication The measurement operation and the measurement report operation may be performed in the same manner as when the system uses the extended PSC mode. The measurement operation and the measurement report operation when the 3GPP mobile communication system uses a fixed PSC mode, when the 3GPP mobile communication system uses an extended PSC mode, and when the 3GPP mobile communication system uses an adaptive PSC mode are described above. Since the description is the same as that, detailed description thereof will be omitted.

As the UE 530 performs a measurement report operation, a location measurement server (not shown) may receive a result of performing a measurement operation of the UE 530, and the location measurement server performs the received measurement operation. If the result includes the PSC assigned to the LD device, the PSC of the LD devices mapped to the cell identifier of the serving cell in which the UE 530 is located is searched in the database. As a result of the search, if there is a matching PSC, the location measurement server determines the LD device mapped to the PSC as the LD device where the UE 530 is located, that is, the LD device 520, and the LD device 520. ) Is determined as the location information of the UE 530.

As described above, since the UE includes the cell identifier of the serving cell of the UE in the measurement report operation result, the UE may detect the LD device where the UE is located even if the same PSC is used in a plurality of LD devices. Can be. However, in order to minimize errors that may occur when the same PSC is used in a plurality of LD devices, various PSC allocation schemes are proposed as follows.

The first PSC allocation method is a method of allocating a PSC allocated to an LD device to one of PSCs that are not allocated to cells managed by an RNC connected to the LD device, that is, reserved PSCs. That is, even if there are a plurality of LD devices using the same reserved PSC in cells managed by one RNC, the LD devices can be distinguished because cell identifiers are used together with the reserved PSC.

The second PSC allocation method includes a PSC of a serving cell in which an LD device is located among all PSCs, a PSC of neighbor cells included in an adjacent cell list of the serving cell, and a monitor of the serving cell. A method of assigning one of the remaining PSCs other than the PSCs of neighboring cells included in the neighbor cell list of neighboring cells having a channel quality equal to or greater than a second threshold value among neighboring cells included in the node set. That is, the second PSC allocation method is a method of minimizing an error by disposing the LD device in which the same PSC is set in the adjacent cell next to the serving cell so as not to be located. That is, even if there are a plurality of LD devices using the same PSC in cells managed by one RNC, the LD devices can be distinguished because the cell identifier is used together with the PSC.

On the other hand, assuming that an LD device using the same PSC is located in each of two adjacent cells, the service area of the corresponding cell is in a field condition such as air condition or data traffic. This may occur in real time according to the present invention, which will be described with reference to FIG. 6 as follows.

6 is a diagram illustrating a case in which a service area of a cell changes in a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 6, first, an LD device using a PSC whose value is '101' in a service area of each of cell # 1 610 and cell # 1 610, that is, LD device # 1 615 and LD Device # 2 623 is located. It is assumed that the service area of the cell # 1 610 is indicated by reference numeral 611 and the service area of the cell # 2 620 is indicated by reference numeral 621.

However, when the service area of the cell # 1 610 is changed as indicated by the reference numeral 613 due to the change of the air state or the field state, the LD device # 2 623 is connected to the cell # 1 ( Not only 610 but also in the service area of cell # 1 610. Therefore, a problem such as misleading the position of the LD device # 2 623 to the position of the LD device # 1 615 may occur. As described above, an error that may occur due to a misjudgment may reach a large number [km]. Therefore, a method for minimizing a position misjudgment situation of an LD device due to a change in a service area of a cell is needed. Referring to FIG. The explanation is as follows.

7 is a diagram schematically illustrating an example of a method for allocating a PSC to an LD device when the 3GPP mobile communication system uses the PSC Reuse Mode according to an embodiment of the present invention.

7 illustrates a PSC allocated to LD devices located in a service area of each cell. That is, PSCs assigned to LD devices located in cell # 1 711 are 101, 102, and 103, and PSCs assigned to LD devices located in cell # 2 713 are 151, 152, 153. PSCs assigned to LD devices located at 3 715 have a value of 351,352,353, and PSCs assigned to LD devices located at cell # 4 717 have a value of 301,302,303, and cell # 5 (719). The PSCs assigned to LD devices located at are 201, 202, 203, and the PSCs assigned to LD devices located at cell # 6 721 are 401, 402, 403, and the LDs are located at cell # 7 (723). PSCs assigned to devices have a value of 501,502,503.

As shown in Fig. 7, the service area of the cell is changed due to the change of the air state or the field state by not assigning the PSC assigned to the LD device located in the adjacent cell to the LD device located in the cell. If possible, it is possible to minimize the misjudgment of the position of the LD device using the same PSC.

On the other hand, as described above, since the service area of the cell may change due to a change in air state or field state, in case of an LD device located in a cell boundary region, as the serving cell of the UE is changed, In some cases, the location information of the LD device and the PSC and the cell identifier may not be mapped in the database of the location measurement server.

In this case, when the location information of the LD device and the PSC and the cell identifier cannot be mapped in the database of the location measurement server according to the change of the service area of the cell, the cell adjacent to the serving cell of the UE, that is, the database PSCs mapped to cell identifiers of neighbor cells of the UE may be searched for location information closest to the LD device, and the searched location information may be detected as location information of the LD device.

In addition, the UE may detect a plurality of reserved PSCs as a result of performing a measurement operation. In this case, the location measurement server detects an LD device using a reserved PSC having the best channel quality among the plurality of reserved PSCs in a database. The LD device in which is located can be detected, and the location of the detected LD device is determined as the location information of the UE.

On the other hand, as described above, even if the same PSC is not allocated to the LD device in the cell next to the serving cell, the same PSC may be registered in each of the two cells as a result of searching the database for the adjacent cells. In this case, the location measurement server may know the radio wave quality measurement result of the UE for the serving cell, the cell in which the LD device is registered, and the neighboring cell through the measurement report operation, and thus the serving cell and the LD device The location information of the corresponding LD device may be detected using the registered cell and the UE's propagation quality measurement result for the neighbor cell. That is, the PSC of the corresponding LD device is not registered in the database of the cell where the UE is currently camped on, but as a result of searching the database of the neighboring cell, the PSC registered for the adjacent cells is found. When two or more configured LD devices are simultaneously searched, as described above, the position information of the corresponding LD devices can be detected. Next, the effect of the method for providing UE location information of the 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 8.

8 is a diagram schematically illustrating a method for providing UE location information of a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 8, it is assumed that a plurality of LD devices are located in a service area of a plurality of cells, for example, three cells are managed by one RNC. As shown in FIG. 8, the method for providing UE location information according to the embodiment of the present invention makes it possible to reuse a PSC.

That is, as illustrated in FIG. 8, when cells in which LD devices allocated with the same PSC are located are not located adjacent to each other, an error probability between LD devices assigned with the same PSC is reduced, and the number of usable PSCs is limited. In addition to receiving relatively less, it is possible to provide more accurate location information. Therefore, the PSC can be allocated to the LD device with almost no limitation on the number of PSCs used by one RNC, thus making it possible to more accurately provide UE location information.

8 illustrates an example in which each of a plurality of cells uses PSCs for the same number of LD devices, the number of PSCs for LD devices used by each of the plurality of cells may be different. Of course.

Next, an internal structure of a UE of a 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 9.

9 is a diagram illustrating an internal structure of a UE of a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 9, the UE includes a controller 911, a receiver 913, a transmitter 915, and a meter 917.

The controller 911 controls the overall operation of the UE, and when the UE uses the fixed PSC mode, the extended PSC mode, the adaptive PSC mode, and the PSC Reuse mode, the corresponding operation is performed. Control to perform. When the 3GPP mobile communication system uses the fixed PSC mode, the extended PSC mode, the adaptive PSC mode, and the PSC Reuse mode, UE operations corresponding to the 3GPP mobile communication systems are the same as described above. do.

The receiver 913 receives a PSC from a base station or an LD device, and receives a measurement control message from the base station. The meter 917 measures the channel quality of the base station or LD device using the PSC received through the receiver 913. The transmitter 915 transmits a result of performing a measurement operation of the UE to the base station. The operation of the receiver 913, the transmitter 915, and the meter 917 also corresponds to the case where the 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, and a PSC reuse mode. Since the description is the same as described in the UE operation, a detailed description thereof will be omitted herein.

Next, an internal structure of a base station of a 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 10.

10 is a diagram illustrating an internal structure of a base station of a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 10, the base station includes a controller 1011, a receiver 1013, a transmitter 1015, and a memory 1017.

The controller 1011 controls the overall operation of the base station, and the base station operates when the 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, and a PSC reuse mode. Control to perform. When the 3GPP mobile communication system uses the fixed PSC mode, the extended PSC mode, the adaptive PSC mode, and the PSC Reuse mode, the corresponding base station operations are the same as described above, and thus detailed description thereof will be omitted. do.

The receiver 1013 receives an LBS request from a UE, receives a measurement operation performance request for the UE from a location measurement server, and receives a measurement operation performance result from the UE. The transmitter 1015 transmits a result of performing a measurement operation received from the UE to the location measurement server, and transmits a measurement control message to the UE when receiving a request to perform a measurement operation for the UE from the location measurement server. The memory 1017 stores a neighbor cell list of the base station. The operations of the receiver 1013, the transmitter 1015, and the memory 1017 also correspond to when the 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, and a PSC reuse mode, respectively. Since the description is the same as described in the base station operation, a detailed description thereof will be omitted herein.

Next, the internal structure of the location measurement server of the 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 11.

11 is a diagram illustrating an internal structure of a location measurement server of a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 11, the base station includes a controller 1111, a receiver 1113, a transmitter 1115, and a memory 1117.

The controller 1111 controls the overall operation of the positioning server, and when the positioning server uses the fixed PSC mode, the extended PSC mode, the adaptive PSC mode, and the PSC reuse mode, respectively, the 3GPP mobile communication system. Control to perform the corresponding operation. When the 3GPP mobile communication system uses the fixed PSC mode, the extended PSC mode, the adaptive PSC mode, and the PSC reuse mode, the location server operations corresponding to the 3GPP mobile communication systems are the same as described above. Let's do it.

The receiver 1113 receives a result of performing a measurement operation transmitted by a UE from a base station. The transmitter 1115 requests the base station to perform a measurement operation for the UE when the location measurement server detects a need to perform a measurement operation for the UE. The memory 1117 stores a database for providing UE location information, and the type of the database stored by the memory 1117 is determined according to the UE location information providing mode used by the 3GPP mobile communication system. The operations of the receiver 1113, the transmitter 1115, and the memory 1117 also correspond to when the 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, and a PSC reuse mode. Since the same as described in the location measurement server operation, the detailed description thereof will be omitted here.

Next, an internal structure of the LD device of the 3GPP mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 12.

12 illustrates an internal structure of an LD device of a 3GPP mobile communication system according to an embodiment of the present invention.

Referring to FIG. 12, the LD device includes a controller 1211, a transmitter 1213, and an NLM operation performer 1215.

The controller 1211 controls the overall operation of the LD device, and the LD device corresponds to a case where the 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, and a PSC reuse mode. Control to perform the operation. When the 3GPP mobile communication system uses the fixed PSC mode, the extended PSC mode, the adaptive PSC mode, and the PSC Reuse mode, the operation of the corresponding LD device is the same as described above, and thus the detailed description thereof is omitted. Shall be.

The NLM operation performer 1215 performs an NLM operation. The transmitter 1213 transmits the result of performing the NLM operation to the location measurement server, and transmits the PSC allocated to the LD device continuously or at a predetermined period. Operation of the transmitter 1213 and NLM operation performer 1215 also corresponds to the operation of an LD device when the 3GPP mobile communication system uses a fixed PSC mode, an extended PSC mode, an adaptive PSC mode, and a PSC reuse mode. Since it is the same as that described in the section, detailed description thereof will be omitted here.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, and equivalents thereof.

Claims (20)

A method of providing location information of a user equipment (UE) in a mobile communication system,
Detecting that the base station is required to perform a measurement operation, which is an operation of measuring location measurement information which is information related to the location information of the UE;
Performing the measurement operation according to a UE location information providing mode used in the mobile communication system;
And performing a measurement report operation, which is an operation of reporting a result of performing the measurement operation according to the UE location information providing mode,
The UE location information providing mode may include a fixed primary scrambling code (PSC) mode (PSC) in which the UE performs the measurement operation and the measurement report operation by using an active set and a monitored set. A fixed PSC mode, an extended PSC mode in which the UE performs the measurement operation and the measurement report operation using the Active Set, the Monitored Set, and the Detected Set; The UE performs the measurement operation and the measurement report operation in the same manner as in the fixed PSC mode or the extended PSC mode, and adaptive PSC mode in which a PSC to be used by a location detection (LD) device is adaptively determined. Mode), and the UE performs the measurement operation and the measurement report operation in the same manner as in the fixed PSC mode or the extended PSC mode, and the PSC reuse mode in which the PSC to be used by the LD device can be reused. How to provide location information of the UE, characterized by one of (PSC Reuse Mode).
The method of claim 1,
If the UE location information providing mode is the Fixed PSC Mode,
The performing of the measurement operation according to the UE location information providing mode may include channel quality information on neighbor cells and LD devices included in the active set, and channel for neighbor cells and LD devices included in the monitored set. Measuring quality information,
The performing of the measurement report operation according to the UE location information providing mode may include PSCs of neighbor cells and LD devices included in the active set and channel quality information of neighbor cells and LD devices included in the active set. And neighboring cells having a channel quality equal to or greater than a predetermined second threshold value among neighboring cells and LD devices included in the monitored set, PSCs of the LD devices, and adjacent cells having channel quality equal to or greater than the second threshold value; And transmitting channel quality information about LD devices to the base station.
The position measurement information includes channel quality information measured in the process of performing the measurement operation,
And the result of performing the measurement operation includes PSCs and channel quality information transmitted to the base station during the measurement report operation.
The method of claim 1,
If the UE location information providing mode is the Extended PSC Mode,
The performing of the measurement operation according to the UE location information providing mode may include channel quality information of neighbor cells and LD devices included in the active set, neighbor cells and LD devices included in the monitored set, and Measuring channel quality information of neighbor cells and LD devices included in the active set, neighbor cells other than the neighbor cells and LD devices included in the monitored set, and LD devices;
The performing of the measurement report operation according to the UE location information providing mode may include PSCs of neighbor cells and LD devices included in the active set and channel quality information of neighbor cells and LD devices included in the active set. And neighboring cells having a channel quality equal to or greater than a predetermined second threshold value among neighboring cells and LD devices included in the monitored set, PSCs of the LD devices, and adjacent cells having channel quality equal to or greater than the second threshold value; Neighboring cells and LD devices having channel quality information about the LD devices and channel quality of the neighboring cells other than the neighboring cells and LD devices included in the monitored set and the LD devices, which are higher than or equal to a predetermined third threshold value. PSCs and channel quality information of neighbor cells and LD devices having channel quality equal to or greater than the third threshold value are transmitted to the base station. Together,
The Detected Set includes adjacent cells and LD devices having channel quality equal to or greater than the third threshold value,
The position measurement information includes channel quality information measured in the process of performing the measurement operation,
And the result of performing the measurement operation includes PSCs and channel quality information transmitted to the base station during the measurement report operation.
The method of claim 1,
When the UE location information providing mode is the Adaptive PSC Mode or PSC Reuse Mode,
The performing of the measurement operation according to the UE location information providing mode may include channel quality information on neighbor cells and LD devices included in the active set, and channel for neighbor cells and LD devices included in the monitored set. Measuring quality information,
The performing of the measurement report operation according to the UE location information providing mode may include PSCs of neighbor cells and LD devices included in the active set and channel quality information of neighbor cells and LD devices included in the active set. And neighboring cells having a channel quality equal to or greater than a predetermined second threshold value among neighboring cells and LD devices included in the monitored set, PSCs of the LD devices, and adjacent cells having channel quality equal to or greater than the second threshold value; And transmitting channel quality information about LD devices to the base station.
The position measurement information includes channel quality information measured in the process of performing the measurement operation,
And the result of performing the measurement operation includes PSCs and channel quality information transmitted to the base station during the measurement report operation.
The method of claim 1,
When the UE location information providing mode is the Adaptive PSC Mode or PSC Reuse Mode,
The performing of the measurement operation according to the UE location information providing mode may include channel quality information of neighbor cells and LD devices included in the active set, neighbor cells and LD devices included in the monitored set, and Measuring channel quality information of neighbor cells and LD devices included in the active set, neighbor cells other than the neighbor cells and LD devices included in the monitored set, and LD devices;
The performing of the measurement report operation according to the UE location information providing mode may include PSCs of neighbor cells and LD devices included in the active set and channel quality information of neighbor cells and LD devices included in the active set. And neighboring cells having a channel quality equal to or greater than a predetermined second threshold value among neighboring cells and LD devices included in the monitored set, PSCs of the LD devices, and adjacent cells having channel quality equal to or greater than the second threshold value; Neighboring cells and LD devices having channel quality information about the LD devices and channel quality of the neighboring cells other than the neighboring cells and LD devices included in the monitored set and the LD devices, which are higher than or equal to a predetermined third threshold value. PSCs and channel quality information of neighbor cells and LD devices having channel quality equal to or greater than the third threshold value are transmitted to the base station. Together,
The Detected Set includes adjacent cells and LD devices having channel quality equal to or greater than the third threshold value,
The position measurement information includes channel quality information measured in the process of performing the measurement operation,
And the result of performing the measurement operation includes PSCs and channel quality information transmitted to the base station during the measurement report operation.
The method of claim 1,
When the UE location information providing mode is the fixed PSC mode, each of the PSCs used by the active set and the LD devices included in the monitored set includes a serving cell of the UE and includes a radio network controller (RNC). Is one of the reserved PSCs that we do not use for base station distinction,
When the UE location information providing mode is the extended PSC mode black is an adaptive PSC mode, each of the PSCs used by the LD devices included in the active set, the monitored set, and the detected set is one of the reserved PSCs,
When the UE location information providing mode is the PSC Reuse Mode, each of the PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set includes PSCs used by the RNC for base station classification and the reserved PSC. The PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set are one-to-one mapped to the cell identifiers of the serving cells of the corresponding LD device. .
A method of providing location information of a base station in a mobile communication system,
If the UE detects that a measurement operation, which is an operation of measuring location measurement information that is information related to the location information of the UE, is required, the operation corresponding to the detection operation request detection for the UE is performed. The process of performing,
Receiving a result of performing a measurement operation from the UE;
Transmitting a result of performing the received measurement operation to a location measurement server;
The result of performing the measurement operation is determined according to the UE location information providing mode used in the mobile communication system, and the UE location information providing mode uses an active set and a monitored set. A fixed basic scrambling code (PSC) mode (Fixed PSC Mode) for performing a measurement report operation, which is an operation for reporting a measurement operation and a result of performing the measurement operation, And an extended PSC mode for performing the measurement operation and the measurement report operation using a Detected Set, and the measurement as the UE is in the Fixed PSC Mode or the Extended PSC Mode. An adaptive PSC mode for performing an operation and a measurement reporting operation and adaptively determining a PSC to be used by a location detection (LD) device; The base station, characterized in that performing the measurement operation and the measurement report operation in the same manner as the fixed PSC Mode or Extended PSC Mode, and the PSC to be used by the LD device is one of the PSC Reuse Mode (PSC Reuse Mode) can be reused. How to provide location information.
The method of claim 7, wherein
If the UE location information providing mode is the Fixed PSC Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. Method for providing location information of the base station comprising a.
The method of claim 7, wherein
If the UE location information providing mode is the Extended PSC Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. And PSCs of neighbor cells and LD devices having a channel quality equal to or greater than a third threshold value, which is preset among neighbor cells and LD devices other than neighbor cells and LD devices included in the monitored set, and the third threshold. It includes channel quality information for neighbor cells and LD devices having a channel quality of more than a value,
And the Detected Set includes neighbor cells and LD devices having channel quality equal to or greater than the third threshold value.
The method of claim 7, wherein
When the UE location information providing mode is the Adaptive PSC Mode or PSC Reuse Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. Method for providing location information of the base station comprising a.
The method of claim 7, wherein
When the UE location information providing mode is the Adaptive PSC Mode or PSC Reuse Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. And PSCs of neighbor cells and LD devices having a channel quality equal to or greater than a third threshold value, which is preset among neighbor cells and LD devices other than neighbor cells and LD devices included in the monitored set, and the third threshold. It includes channel quality information for neighbor cells and LD devices having a channel quality of more than a value,
And the Detected Set includes neighbor cells and LD devices having channel quality equal to or greater than the third threshold value.
The method of claim 7, wherein
When the UE location information providing mode is the fixed PSC mode, each of the PSCs used by the active set and the LD devices included in the monitored set includes a serving cell of the UE and includes a radio network controller (RNC). Is one of the reserved PSCs that we do not use for base station distinction,
When the UE location information providing mode is the extended PSC mode black is an adaptive PSC mode, each of the PSCs used by the LD devices included in the active set, the monitored set, and the detected set is one of the reserved PSCs,
When the UE location information providing mode is the PSC Reuse Mode, each of the PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set includes PSCs used by the RNC for base station classification and the reserved PSC. The PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set are one-to-one mapped with the cell identifier of the serving cell of the corresponding LD device. .
A method of providing location information of a location measurement server in a mobile communication system,
When the UE detects that a measurement operation, which is an operation of measuring location measurement information that is information related to the location information of the UE, needs to be performed, requesting a base station to perform a measurement operation on the UE Process,
Requesting the base station to perform a measurement operation for the UE, receiving a result of performing a measurement operation received from the UE by the base station from the base station;
Determining location information of the UE using the result of performing the received measurement operation;
The result of performing the measurement operation is determined according to the UE location information providing mode used in the mobile communication system, and the UE location information providing mode uses an active set and a monitored set. A fixed basic scrambling code (PSC) mode (Fixed PSC Mode) for performing a measurement report operation, which is an operation for reporting a measurement operation and a result of performing the measurement operation, And an extended PSC mode for performing the measurement operation and the measurement report operation using a Detected Set, and the measurement operation in the same manner as the UE in the Fixed PSC Mode or the Extended PSC Mode. And an adaptive PSC mode in which a PSC to be used by a location detection (LD) device is adaptively determined, and the UE is fixed to a PS. As in the C mode or the Extended PSC mode, the measurement operation and the measurement report operation are performed, and the PSC to be used by the LD device is one of the PSC reuse mode (PSC Reuse Mode) that can be reused. How to provide location information.
The method of claim 13,
If the UE location information providing mode is the Fixed PSC Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. Method for providing location information of a location measurement server comprising a.
The method of claim 13,
If the UE location information providing mode is the Extended PSC Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. And PSCs of neighbor cells and LD devices having a channel quality equal to or greater than a third threshold value, which is preset among neighbor cells and LD devices other than neighbor cells and LD devices included in the monitored set, and the third threshold. It includes channel quality information for neighbor cells and LD devices having a channel quality of more than a value,
And the Detected Set includes adjacent cells and LD devices having channel quality equal to or greater than the third threshold value.
The method of claim 13,
When the UE location information providing mode is the Adaptive PSC Mode or PSC Reuse Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. Method for providing location information of a location measurement server comprising a.
The method of claim 13,
When the UE location information providing mode is the Adaptive PSC Mode or PSC Reuse Mode,
The result of performing the measurement operation includes PSCs of neighbor cells and LD devices included in the active set, channel quality information of neighbor cells and LD devices included in the active set, and neighbors included in the monitored set. Channel quality information of neighbor cells and LD devices having channel quality greater than or equal to a second threshold value among cells and LD devices, and neighbor cells and LD devices having channel quality greater than or equal to the second threshold value. And PSCs of neighbor cells and LD devices having a channel quality equal to or greater than a third threshold value, which is preset among neighbor cells and LD devices other than neighbor cells and LD devices included in the monitored set, and the third threshold. It includes channel quality information for neighbor cells and LD devices having a channel quality of more than a value,
And the Detected Set includes adjacent cells and LD devices having channel quality equal to or greater than the third threshold value.
The method of claim 13,
When the UE location information providing mode is the fixed PSC mode, each of the PSCs used by the active set and the LD devices included in the monitored set includes a serving cell of the UE and includes a radio network controller (RNC). Is one of the reserved PSCs that we do not use for base station distinction,
When the UE location information providing mode is the extended PSC mode black is an adaptive PSC mode, each of the PSCs used by the LD devices included in the active set, the monitored set, and the detected set is one of the reserved PSCs,
When the UE location information providing mode is the PSC Reuse Mode, each of the PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set includes PSCs used by the RNC for base station classification and the reserved PSC. The PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set are one-to-one mapped to the cell identifiers of the serving cells of the corresponding LD device. Way.
A method of providing location information of a location detection (LD) device in a mobile communication system,
Transmitting the PSC according to a user equipment (UE) location information providing mode used in the mobile communication system;
The UE location information providing mode is a measurement operation and an operation for measuring location measurement information, which is information related to the location information of the UE, using an Active Set and a Monitored Set. A fixed basic scrambling code (PSC) mode (Fixed PSC Mode) for performing a measurement report operation, which is an operation for reporting a performance result, and the UE sets the Active Set, the Monitored Set, and the Detected Set. Extended PSC mode for performing the measurement operation and measurement report operation using the same method, and the UE performs the measurement operation and the measurement report operation in the same manner as in the fixed PSC mode or Extended PSC mode, An Adaptive PSC Mode in which a PSC to be used by a Location Detection (LD) device is adaptively determined, and the UE may be configured in the same manner as in a Fixed PSC Mode or an Extended PSC Mode. How to perform the measurement operation and the measurement report operation, and provides location information of the LD device characterized by one of the LD device is re-mode PSC (PSC Reuse Mode), which may be reused for the PSC.
20. The method of claim 19,
When the UE location information providing mode is the fixed PSC mode, each of the PSCs used by the active set and the LD devices included in the monitored set includes a serving cell of the UE and includes a radio network controller (RNC). Is one of the reserved PSCs that we do not use for base station distinction,
When the UE location information providing mode is the extended PSC mode black is an adaptive PSC mode, each of the PSCs used by the LD devices included in the active set, the monitored set, and the detected set is one of the reserved PSCs,
When the UE location information providing mode is the PSC Reuse Mode, each of the PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set includes PSCs used by the RNC for base station classification and the reserved PSC. Each of the PSCs used by the LD devices included in the Active Set, the Monitored Set, and the Detected Set is one-to-one mapped with the cell identifier of the serving cell of the corresponding LD device. Way.

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