WO2014106976A1

WO2014106976A1 - Apparatus for processing radio signal, apparatus for measuring position, and method for measuring position thereof

Info

Publication number: WO2014106976A1
Application number: PCT/KR2013/007062
Authority: WO
Inventors: 박규진; 최우진
Original assignee: 주식회사 케이티
Priority date: 2013-01-04
Filing date: 2013-08-06
Publication date: 2014-07-10
Also published as: KR101539054B1; KR20140089249A

Abstract

A method for measuring the position of a terminal by using an apparatus for measuring the position according to the present invention includes the steps of: assigning a virtual cell ID (VCID) to each of a plurality of radio units (RU) with the same physical cell ID (PCID); receiving the reference signal time difference (RSTD) detected by the terminal using the time of receiving a first positioning reference signal (first PRS) based on PCID and the time of receiving a second positioning reference signal (second PRS) based on VCID; and measuring the position of the terminal by using the value of RSTD.

Description

Wireless signal processing device and position measuring device, and position measuring method thereof

The present invention relates to a wireless signal processing apparatus, a position measuring device, and a position measuring method thereof.

Conventionally, as a method for measuring the position of a terminal, a position measurement result through a global navigation satellite system (GNSS), which is a terminal position measurement system based on a satellite signal such as a global positioning system (GPS), is measured. A-GNSS (Assisted-GNSS) method for receiving the feedback from the terminal to track the location of the terminal and a wireless signal-based method for measuring the position of the terminal based on a wireless signal transmitted and received between the base station and the terminal.

In particular, in the case of a wireless signal-based method for transmitting and receiving between a base station and a terminal, an enhanced cell ID (E-CID) method and an accurate time-of-observation difference (OTDOA) method than the E-CID method are performed. Arrival) method is supported.

The OTDOA method for measuring the position of a terminal is a reference signal that is a difference between the arrival time of a reference signal (RS) received from a serving base station communicating with the terminal and the arrival time of a reference signal reached from an adjacent base station. A method of measuring the position of a terminal by measuring a time difference (Reference Signal Time Difference, RSTD) value in the terminal.

The present invention is to provide a method and apparatus that can improve the accuracy of the terminal location measurement.

In a location measuring method according to an aspect of the present invention, a location measuring device measures a location of a terminal, each of a plurality of radio unit (RU) devices having the same physical cell ID (PCID). Allocating a virtual cell ID (VCID) to the receiver, a reception time of a first positioning reference signal (PRS) based on the PCID, and a second positioning reference signal based on the VCID Receiving a reference signal time difference (RSTD) value measured by the terminal using a reception time of a reference signal (2 PRS), and measuring the position of the terminal using the RSTD value It includes.

The RSTD value may include the plurality of wireless signal processing apparatuses transmitting a second PRS based on each VCID together with a first PRS based on a PCID to the terminal, and wherein the terminal is based on a reception time of the first PRS. The RSTD value can be calculated from the difference in the reception time of the second PRS.

The measuring of the position of the terminal includes correcting the RSTD value, and applying the Observed Time Difference Of Arrival (OTDOA) using the corrected RSTD value, wherein the corrected RSTD value is When the first three RSTD values, the second RSTD value, and the third RSTD value are received, the corrected RSTD value is obtained by subtracting the first RSTD value, the second RSTD value, and the third RSTD value, respectively. Can be calculated.

The allocating of the VCID may have an ID different from the PCIDs of the plurality of wireless signal processing apparatuses and may be assigned to be different from each other of the plurality of wireless signal processing apparatuses.

A position measuring apparatus according to an aspect of the present invention is a device for measuring the position of a terminal connected to a plurality of radio unit (RU) having the same physical cell ID (PChy), the plurality of An ID allocator for allocating a virtual cell ID (VCID) to a wireless signal processing device, the VCID is transmitted to the plurality of wireless signal processing devices, and a first positioning reference signal based on the PCID. Transmitting and receiving a reference signal time difference (RSTD) value measured by the terminal from a reception time of a first PRS and a second Positioning Reference Signal based on the VCID And a positioning performer for measuring the position of the terminal using the RSTD value.

The apparatus may further include a correcting unit configured to correct the RSTD value to correct the reception time error of the first PRS.

The correction unit, when the transceiver receives three first RSTD values, a second RSTD value, and a third RSTD value, subtracts the first RSTD value, the second RSTD value, and the third RSTD value, respectively. The corrected RSTD value can be calculated.

The positioning performing unit measures the position of the terminal by applying Observed Time Difference Of Arrival (OTDOA) using the RSTD value.

The VCID is assigned an ID different from the PCID of the serving radio signal processing apparatus to which the terminal is connected, and is assigned an ID different from the PCID and the VCID of the adjacent radio signal processing apparatus, so that different IDs are assigned to each of the plurality of radio signal processing apparatuses. Can be.

The VCID is assigned an ID having a modulo 6 different from the modulo 6 of the PCID of the serving radio signal processing apparatus, and the modulo 6 of the PCID of the adjacent radio signal processing apparatus and the modulo 6 of the VCID. An ID with 6 different modules may be assigned.

A wireless signal processing apparatus according to an aspect of the present invention is a wireless signal processing apparatus having a physical cell ID (PCID) and at least one adjacent wireless signal processing apparatus, and is a first positioning reference signal based on the PCID. PRS generation unit for generating a second Positioning Reference Signal (PRS) based on a Signal (PRS) and the Virtual Cell ID (VCID), and a Digital Signal Processing Unit (Digital Unit) And a transceiver for receiving the PCID from the DU, receiving the VCID from a position location measuring apparatus or the digital signal processing apparatus, and transmitting the second PRS to the terminal together with the first PRS.

The transceiver may transmit the VCID to the UE through UE-specific or cell-specific Radio Resource Control (RRC) signaling.

The transceiver may receive a reference signal time difference (RST) value measured from a difference between a reception time of the first PRS and a reception time of the second PRS, and transmit the reference signal time difference (RSTD) to the location measurement apparatus. have.

According to the present invention, in the structure of a cloud communication center (CCC) of a virtualization server having the same physical cell ID (Physical Cell ID, PCID), it provides an environment that can improve the accuracy of the terminal location measurement.

1 is a view for explaining a process of measuring the position of the terminal by applying the OTDOA according to the prior art.

2 is a diagram illustrating that a terminal is connected to a wireless signal processing apparatus having the same PCID.

3 is a block diagram illustrating a position measuring system according to an embodiment of the present invention.

4 is a block diagram showing a position measuring system according to another embodiment of the present invention.

5 is a flowchart illustrating a process of measuring a location of a terminal by a location measuring device according to an embodiment of the present invention.

6 is a flowchart illustrating a position measuring process of a position measuring system according to an exemplary embodiment of the present invention.

7 is a diagram illustrating a PRS transmission process according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Throughout the specification, a terminal is a mobile station (MS), mobile terminal (MT), subscriber station (SS), portable subscriber station (PSS), access terminal (access) It may refer to a terminal (AT), a user equipment (UE), or the like, and may include all or some functions of the terminal, MT, SS, PSS, AT, UE, and the like.

In addition, the base station (BS) is a node B (eB), an evolved node B (eNodeB), an access point (AP), a radio access station (radio access station (RAS)), a base transceiver station may refer to a base transceiver station (BTS), a mobile multihop relay (MMR) -BS, or the like, and may include all or a part of functions of a NodeB, an eNodeB, an AP, a RAS, a BTS, an MMR-BS, and the like.

As shown in FIG. 1, an Observed Time Difference Of Arrival (OTDOA) scheme is as follows. First, the difference between the arrival time of the reference signal (RS) transmitted from the serving base station A to which the terminal 10 is currently communicating and the arrival time of the RS from the first neighboring base station B is expressed. The first hyperbola X is obtained. In addition, the OTDOA method obtains a second hyperbola Y expressed by the arrival time difference of the RS from the serving base station A and the RS from the second neighboring base station C. The OTDOA method then obtains a third hyperbola Z representing the difference in arrival times of the RS from the first neighboring base station B and the RS from the second neighboring base station C. Subsequently, the OTDOA method obtains an intersection point of the first hyperbolic X, the second hyperbolic Y, and the third hyperbolic Z, and measures the position of the terminal 10 therefrom.

As described above, in order to apply the OTDOA scheme, not only the RS transmitted from the serving base station A in the corresponding UE 10, but also the RS transmitted from at least two different neighboring base stations B and C, and the corresponding RSs are successfully Should be received.

Meanwhile, the downlink RS defined in Long-Term Evolution (LTE) rel-8 is a cell-specific RS (Cell-specific RS) and a primary synchronization signal / secondary synchronization signal (Primary Synchronization Signal / Secondary Synchronization) Signal, PSS / SSS). Since the CRS and the PSS / SSS are generated based on the physical cell ID (PCID) used by the corresponding base station for each base station, the CRS and the PSS / SSS transmitted by each base station can be distinguished from any terminal. It may be possible to use it as an RS for OTDOA application.

However, since such a signal is not designed to measure an RSTD value for measuring a location of a terminal, the CRS or PSS / SSS transmitted by at least two different neighboring base stations as well as the CRS or PSS / SSS of the serving base station. It does not guarantee reception performance for.

In order to solve this problem, a positioning reference signal (PRS), which is a new RS having improved RS reception performance from a neighboring base station as well as a serving base station, has been defined for measuring RSTD values for OTDOA application from LTE rel-9.

In this case, like the CRS and the PSS / SSS, the PCID used by each base station is used to generate the corresponding PRS sequence to distinguish the PRS transmitted from each base station, and the resource for transmitting each PRS ( Resource) is also mapped based on PCID.

Recently, the base station's digital unit (DU) and wireless devices have been applied to apply efficient coordinated multi-point transmission / reception (CoMP) technology to increase the efficiency of cell operation and to increase the transmission rate at the cell boundary area. A cloud that separates a signal processing unit (Radio Unit, RU) to control and manage a plurality of RUs that form each cell in a single DU, and also manages a single cloud server by integrating each DU. The wireless network structure of the Cloud Communication Center (CCC) is gaining much attention.

In the CCC structure, the same PCID is allocated to a plurality of adjacent RUs connected to one DU, thereby providing mobility load, joint transmission (JT), and cooperative scheduling in a cell boundary region between RUs. It is easy to apply various CoMP technologies such as Scheduling (CS).

However, when the same PCID is used between RUs forming each cell, since the same PRS is generated and transmitted in each RU as shown in FIG. 2, a UE surrounded by cells formed by the corresponding RUs transmits in each RU. Difficult to distinguish PRS Therefore, the corresponding terminal cannot calculate a reference signal time difference (RSTD) value of the PRS transmitted by each of the RUs, and thus cannot apply the OTDOA for measuring the position of the corresponding UE.

That is, as shown in FIG. 2, when the same PCID g is allocated to the adjacent base stations RU_0, RU_1, and RU_2 according to the conventional PRS transmission method, the corresponding base stations are determined by the PRS (s) determined by the PCID g, respectively. g) create and send.

In this case, the UE surrounded by the corresponding base stations transmit the same PRS (g) in the corresponding RU_0, RU_1, RU_2 can not distinguish the PRS transmitted by each RU. Therefore, the terminal cannot calculate the RSTD value for position measurement and cannot feed back the RSTD value to the network.

Referring now to Figures 3 to 7 will be described in detail with respect to the position measuring system and the position measuring method according to an embodiment of the present invention.

As shown in FIG. 3, the position measuring system according to an exemplary embodiment of the present invention includes a terminal 100, a plurality of wireless

signal processing apparatuses

200, 300, and 400, and a position measuring apparatus 500.

The terminal 100 receives a PRS from each of the plurality of wireless

signal processing apparatuses

200, 300, and 400, calculates an RSTD value using the received PRS, and processes a serving radio signal that is currently connected to the calculated RSTD value. Transmit to device 200.

The terminal 100 receives the reception time of the first Positioning Reference Signal (PRS) based on the serving radio signal processing apparatus 200 or the PCID of the cell to which the terminal belongs, and receives the remaining position reference signals other than the same. Measure the RSTD value from time.

Here, the remaining position reference signals may be a second position reference signal based on a virtual cell ID (VCID) transmitted by the serving wireless signal processing apparatus 200 or the same. It may be a VCID-based second PRS transmitted by the neighboring wireless

signal processing apparatus

300 or 400 using the PCID.

In addition, the remaining position reference signal, the first PRS based on another PCID transmitted by a neighboring radio signal processing apparatus (not shown) using a PCID different from the PCID of the serving radio signal processing apparatus 200, and the neighboring radio signal It may be a VCID-based second PRS transmitted by a processing device (not shown).

In addition, the terminal 100 transmits the measured RSTD value to the serving wireless signal processing apparatus 200.

This embodiment is a case where the wireless

signal processing apparatuses

200, 300, and 400 located in a range where the terminal 100 can receive the PRS use the same PCID. Therefore, the RSTD value of the present embodiment is that the terminal 100 receives the first PRS based on the PCID and the second PRS based on the VCID transmitted from the plurality of wireless

signal processing apparatuses

200, 300, and 400, and the terminal 100 receives the second PRS. It calculates from the difference between the reception time of 1 PRS and the reception time of each 2nd PRS, respectively.

The wireless

signal processing apparatuses

200, 300, and 400 generate a PRS and transmit the generated PRS to the terminal 100, and the serving wireless signal processing apparatus 200 receives the RSTD value from the terminal 100 to the position measuring apparatus 500. To pass. At this time, according to an embodiment of the present invention, it is assumed that the wireless

signal processing apparatuses

200, 300, and 400 to which the terminal 100 is connected have the same PCID. The serving radio signal processing apparatus 200 is a base station to which the terminal 100 is currently connected, and the radio

signal processing apparatuses

300 and 400 are adjacent base stations adjacent to the serving radio signal processing apparatus 200.

Each of the wireless

signal processing apparatuses

200, 300, and 400 includes a PRS generator 210 and a transceiver 220.

The PRS generator 210 may generate a first PRS based on the PCID transmitted from the digital unit (DU) and may generate a second PRS based on the VCID.

The transceiver 220 receives the PCID from the digital signal processing device and transmits the first PRS to the terminal 100. The transmitter / receiver 220 may receive the VCID from the position location measuring apparatus 500 or the digital signal processing apparatus, and may transmit the second PRS generated by the PRS generator 210 to the terminal 100.

In addition, the transceiver 220 of the serving wireless signal processing apparatus 200 receives the RSTD value from the terminal 100 and transmits the RSTD value to the position measuring apparatus 500.

The transceiver 220 may transmit the PCID or the VCID to the terminal 100 through UE-specific or cell-specific Radio Resource Control (RRC) signaling.

The position measuring apparatus 500 receives information about the terminal 100 from the wireless signal processing apparatus and measures the position of the terminal 100. For example, the position measuring apparatus 500 receives the RSTD value from the serving wireless signal processing apparatus 200 and measures the position of the terminal 100.

In addition, the position measuring apparatus 500 may allocate a virtual cell ID (VCID) to the wireless

signal processing apparatuses

200, 300, and 400 having the same PCID according to an embodiment of the present invention.

The position measuring apparatus 500 may include a transceiver 510, a positioning performer 520, a calibrator 530, and an ID allocator 540.

The transceiver 510 transmits the VCID to the wireless

signal processing apparatuses

200, 300, and 400, and receives the RSTD value measured by the terminal 100 from the serving wireless signal processing apparatus 200.

The positioning performer 520 measures the position of the terminal by applying Observed Time Difference Of Arrival (OTDOA) using the RSTD value measured by the terminal 100.

The correction unit 530 corrects the RSTD value to correct the reception time error of the first PRS based on the PCID.

For example, when the transceiver 510 receives three first RSTD values, a second RSTD value, and a third RSTD value from the serving wireless signal processing apparatus 200, the correction unit 530 may correct the first RSTD value. The RSTD value corrected for the RSTD value, the second RSTD value, and the third RSTD value may be calculated.

According to an embodiment of the present invention, the first RSTD value is a difference between the reception time of the first PRS based on the PCID and the reception time of the second PRS based on the VCID of the serving radio signal processing apparatus 200. The second RSTD value is a difference between the reception time of the first PRS based on the PCID and the reception time of the second PRS based on the VCID of the neighboring radio signal processing apparatus 300. The third RSTD value is a difference between the reception time of the first PRS based on the PCID and the reception time of the second PRS based on the VCID of the neighboring radio signal processing apparatus 400.

The correction unit 530 calculates a corrected RSTD value by subtracting the first RSTD value, the second RSTD value, and the third RSTD value, respectively.

Accordingly, the corrected RSTD values are canceled from the reception time of the first PRS based on the PCID, and are calculated as a difference between the reception times of the second PRS based on the VCID of each of the plurality of wireless

signal processing apparatuses

200, 300, and 400. The ID allocator 540 allocates a virtual cell ID (VCID) to the plurality of wireless

signal processing apparatuses

200, 300, and 400.

In this case, the VCID has an ID different from the PCID of the wireless

signal processing apparatuses

200, 300, and 400, and has a different ID for each of the plurality of wireless

signal processing apparatuses

200, 300, and 400.

In general, in the PRS resource mapping rule of the LTE standard document, there are six groups of resource elements (REs) shifted on the frequency axis so as not to overlap each other for PRS transmission. The PRS is defined to be transmitted through each resource element group according to a modulo 6 value of.

Accordingly, when the neighboring base stations are assigned PCIDs such that modulo 6 of the PCID is different from each other, the PRS resources transmitted from the corresponding base stations are orthogonally multiplexed with each other on the frequency axis, thereby interfering with each other. By minimizing the PRS reception performance can be improved.

Accordingly, an embodiment of the present invention minimizes interference between PRSs by utilizing such PRS resource mapping rules even when allocating VCIDs to the radio

signal processing apparatuses

200, 300, and 400.

For example, when the PCID of the wireless signal processing apparatus is x, the ID allocator 540 may allocate y having a different value between modulo 6 of x and modulo 6 of y as VCID. Here, modulo 6 means the remaining value obtained by dividing the ID value by 6.

In addition, the ID allocator 540 has a modulo 6 of z and a modulo 6 of y when the PCID of the adjacent radio signal processing apparatus is z and the VCID is w, and the w modulo 6 and y modules are different. Y is assigned to the VCID of the radio signal processing apparatus, in which 6 satisfies a different condition.

When the VCID for the PRS transmission is allocated as described above, the wireless signal processing apparatus may additionally generate and transmit the PRS based on the VCID in addition to the PRS generated based on the PCID.

According to another embodiment of the present invention according to FIG. 5, the ID allocating unit 540 of the position measuring apparatus 500 does not allocate the VCID to the wireless

signal processing apparatuses

200, 300, and 400, but rather the digital signal processing apparatus 600. The ID allocator 610 may allocate the VCID to the wireless

signal processing apparatuses

200, 300, and 400 together with the PCID.

Referring to FIG. 5, the position measuring apparatus 500 or the digital signal processing apparatus 600 allocates different VCIDs to the plurality of wireless

signal processing apparatuses

200, 300, and 400 each having the same PCID (S100).

In addition, the position measuring apparatus 500 receives the RSTD value measured by the terminal 100 from the reception time of the first PRS and the second PRS from the serving wireless signal processing apparatus 200 (S110).

Then, the position measuring device 500 applies the OTDOA using the RSTD value to measure the position of the terminal (S120).

Referring to FIG. 6, the location measuring apparatus 500 may allocate a VCID to measure a location of a terminal.

The location measuring apparatus 500 allocates different VCIDs to the wireless

signal processing apparatuses

200, 300, and 400 in order to measure the location of the terminal 100 (S200).

In this case, the

apparatus

200, 300, or 400 generates the first PRS based on the PCID and the second PRS based on the VCID, and transmits them to the terminal 100 (S202 and S204).

The terminal 100 calculates an RSTD value from the received time difference between the received first PRS and the second PRS (S206). The calculated RSTD value is transmitted to the position measuring apparatus 500 via the serving radio signal apparatus 200 (S208 and S210).

In addition, when an error occurs in the reception time of the first PRS, the position measuring apparatus 500 corrects the RSTD value (S212).

That is, since the PCID-based first PRS, which is a reference, is transmitted not only to the serving radio signal processing apparatus 200 but also to the neighboring radio

signal processing apparatuses

300 and 400, the PCID-based agent measured by the terminal 100 is measured. 1 An error may occur in the reception time itself of the PRS. Therefore, in the present invention, the above error can be prevented in advance by correcting the RSTD value as necessary.

Then, the position measuring device 500 applies the OTDOA using the RSTD value to measure the position of the terminal (S214).

According to an embodiment of the present invention, when the same PCID g is allocated to the wireless

signal processing apparatuses

200, 300, and 400, the digital signal processing apparatus 600 or the position measuring apparatus 500 connected to the corresponding wireless signal processing apparatuses may be used. An additional VCID for PRS transmission is allocated to each radio signal processing device. As such, the wireless signal processing apparatus to which the additional VCID is allocated generates and transmits the VCID based PRS in addition to the PCRS based PRS.

In FIG. 7, each of the wireless

signal processing apparatuses

200, 300, and 400 allocates different additional VCIDs p, b, and y for PRS transmission, and each of the wireless

signal processing apparatuses

200, 300, and 400 has a PCID. The PRS (p), PRS (b), and PRS (y) generated based on the VCID additionally allocated together with the PRS (g) generated based on g are shown to be transmitted to the terminal 100, respectively. That is, the wireless signal processing apparatus 200 transmits the VCID-based PRS (p) to the terminal 100 together with the PCID g-based PRS (g), and the wireless signal processing apparatus 300 includes the PRS (g) and the PRS. (b) is transmitted to the terminal 100, and the wireless signal processing apparatus 400 transmits PRS (g) and PRS (y) to the terminal 100.

As such, the terminal 100 measures the RSTD value of the reception time of the PRS generated based on another cell ID based on the reception time of the PRS (g) generated based on the PCID of the wireless signal processing apparatus to which the mobile station belongs. . That is, according to an embodiment of the present invention, when the virtual cell ID is allocated as shown in FIG. 7, the corresponding terminal 100 is based on PRS (g), respectively, based on PRS (p), PRS (b), and PRS (y. Calculate RSTD value with The location measuring apparatus 500 measures the location of the terminal through the OTDOA method using the corresponding RSTD value measured from the terminal 100.

The embodiments of the present invention described above are not only implemented through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention or a recording medium on which the program is recorded.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims

As a method for measuring the position of the terminal by the position measuring device,

Allocating a virtual cell ID (VCID) to each of a plurality of radio unit (RU) devices having the same physical cell ID (PCID);

Measured by the terminal using a reception time of a first Positioning Reference Signal (PRS) based on the PCID and a reception time of a second Positioning Reference Signal (2 PRS) based on the VCID Receiving a reference signal time difference (RSTD) value, and

Measuring the position of the terminal using the RSTD value

Containing

How to measure position.
In claim 1,

The RSTD value is,

The plurality of wireless signal processing apparatuses transmits each second PRS based on each VCID together with the first PRS based on the PCID to the terminal, and the terminal transmits each of the second PRSs based on the reception time of the first PRS. Position measurement method for calculating the RSTD value from the difference in reception time.
In claim 1,

Measuring the position of the terminal,

Correcting the RSTD value, and

Applying the Observed Time Difference Of Arrival (OTDOA) using the corrected RSTD value,

The corrected RSTD value subtracts the first RSTD value, the second RSTD value, and the third RSTD value, respectively, when three first RSTD values, a second RSTD value, and a third RSTD value are received. The position measuring method in which the corrected RSTD value is calculated.
In claim 1,

Assigning the VCID,

And a plurality of IDs different from the PCIDs of the plurality of radio signal processing apparatuses and assigned to be different from each other of the plurality of radio signal processing apparatuses.
A device for measuring the position of a terminal connected to a plurality of radio unit (RU) devices having the same physical cell ID (PCID),

An ID allocator for allocating a virtual cell ID (VCID) to the plurality of wireless signal processing apparatuses;

The VCID is transmitted to the plurality of wireless signal processing apparatuses, and a first Positioning Reference Signal (PRS) based on the PCID and a second Positioning Reference Signal (2) PRS based on the VCID are provided. A transceiver for receiving a reference signal time difference (RSTD) value measured by the terminal from a reception time of

Positioning execution unit for measuring the position of the terminal using the RSTD value

Position measuring device comprising a.
In claim 5,

A correction unit that corrects the RSTD value to correct a reception time error of the first PRS

Position measuring device further comprising.
In claim 6,

The correction unit,

When the transceiver receives three first RSTD values, a second RSTD value, and a third RSTD value, the RSTD is corrected by subtracting the first RSTD value, the second RSTD value, and the third RSTD value, respectively. Position measuring device to calculate the value.
In claim 5,

The positioning performing unit,

Position measuring device for measuring the position of the terminal by applying the Observed Time Difference Of Arrival (OTDOA) using the RSTD value.
In claim 5,

The VCID is,

And a different ID from the PCID of the serving wireless signal processing device to which the terminal is connected, and different IDs from the PCID and the VCID of the adjacent wireless signal processing device are allocated, and different IDs are assigned to each of the plurality of wireless signal processing devices.
In claim 9,

The VCID is,

An ID having a modulo 6 different from the modulo 6 of the PCID of the serving radio signal processing apparatus is assigned, and a modulo 6 different from the modulo 6 of the PCID of the adjacent radio signal processing apparatus and a modulo 6 of the VCID. Location measuring device is assigned an ID having.
A wireless signal processing apparatus having the same physical cell ID (PCID) as one or more adjacent wireless signal processing apparatuses,

PRS for generating a first Positioning Reference Signal (PRS) based on the PCID and a second Positioning Reference Signal (PRS) based on a virtual cell ID (VCID) Generating unit, and

Transmitting and receiving unit for receiving the PCID from a digital signal processing unit (Digital Unit, DU), receiving the VCID from a position measuring device or the digital signal processing device, and transmits the second PRS with the first PRS to the terminal

Wireless signal processing apparatus comprising a.
In claim 11,

The transceiver unit,

A radio signal processing apparatus for transmitting the VCID to the terminal through terminal specific or cell specific Radio Resource Control (RRC) signaling.
In claim 11,

The transceiver unit,

And receiving a reference signal time difference (RSTD) value measured from a difference between a reception time of the first PRS and a reception time of the second PRS, from the terminal and transmitting the reference signal time difference (RSTD).