KR20100136408A - Apparatus and method for transmission of location information on passive other rat discovery - Google Patents

Abstract

PURPOSE: A location information transmission method of a base station and a device thereof are provided to transmit the location information of the base station to a terminal using the passive different kind access system detection method thereby selecting the base station of the optimized different kind access system in the terminal. CONSTITUTION: A location information transmission device of a base station constitutes the frame including heterogeneous access system information(S401). Based on interworking technology with the different kind access system or backbone, the location information transmission device extracts location information of the base station of the different kind access system in a serving BS(Base Station)(S402). The location information transmission device inserts the extracted BS location information and a BS type to a frame(S403). The location information transmission device of the base station transmits the frame to a terminal(S404).

Description

Apparatus and method for Transmission of Location Information on Passive Other RAT Discovery}

The present invention relates to an apparatus and method for transmitting location information of a base station. In particular, the present invention relates to an apparatus and method for transmitting location information of a base station to a terminal for detecting a heterogeneous access system in a heterogeneous network.

Methods for detecting heterogeneous access systems for handover in a heterogeneous network include an active heterogeneous access system detection method and a passive heterogeneous access system detection method.

The active heterogeneous access system detection method is to select (transmit) the most optimal heterogeneous access system information from the base station to the terminal. At this time, the base station knows the information about the heterogeneous access systems of its surroundings or overlapped with itself through the backbone according to the interworking technology. When the terminal includes its location information in a scanning request (SCN-REQ) message and transmits it to the base station, the serving base station compares the position of the terminal with the positions of the base stations (base stations located closest to the terminal) of the heterogeneous access system. Thus, only the information on the base stations of the heterogeneous access system that the terminal can access is selected and transmitted to the terminal. Then, the terminal scans the base station of the heterogeneous access system based on the optimized heterogeneous access system information received from the serving base station, thereby reducing the scanning load.

In the passive heterogeneous access system detection method, a terminal receives all base station information of a neighboring or overlapping heterogeneous access system from a serving base station and scans base stations of all heterogeneous access systems based on the received base station information.

Therefore, the passive heterogeneous access system detection method has a larger scanning load than the active heterogeneous access system detection method. Further, in the passive heterogeneous access system detection method, there is no method for selectively scanning by comparing the position of the terminal with the base station position of the heterogeneous access system.

An object of the present invention is to provide an apparatus and method for transmitting location information of a base station to a terminal using a passive heterogeneous access system detection method.

According to a feature of the present invention for achieving the above object, a method for transmitting the location information of the base station to the terminal

The apparatus for transmitting location information of the base station includes constructing at least one frame including heterogeneous access system information, and inserting base station location information and base station type of the heterogeneous access system into the heterogeneous access system information.

According to another aspect of the invention, the location information transmission apparatus of the base station

A component constituting at least one frame including heterogeneous access system information, an extractor for extracting location information of the base station of the heterogeneous access system, and inserting the location information of the base station and the type of the base station into the at least one frame; It includes an insert.

According to an embodiment of the present invention, the location information transmission apparatus of the base station transmits the location information of the base station to the terminal using the passive heterogeneous access system detection method, so that the terminal can select the base station of the optimal heterogeneous access system by itself. .

In addition, according to an embodiment of the present invention, the terminal can select and scan the base station of the optimal heterogeneous access system by itself, it is possible to reduce the heterogeneous access scanning load.

1 is a view showing the structure of a frame for transmitting heterogeneous access system information in a passive heterogeneous access system detection method.
2 is a view showing the structure of a frame for transmitting location information of a base station according to an embodiment of the present invention.
3 is a diagram illustrating a structure of an apparatus for transmitting location information of a base station according to an embodiment of the present invention.
4 is a flowchart illustrating a method of transmitting location information of a base station 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. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. 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.

In the present specification, a terminal is a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), a user equipment (User Equipment). , UE), an access terminal (AT), and the like, and may include all or some functions of a mobile station, a mobile terminal, a subscriber station, a portable subscriber station, a user device, an access terminal, and the like.

In the present specification, a base station (BS) is an access point (AP), a radio access station (Radio Access Station, RAS), a node B (Node-B), an eNB (Evolved Node-B), a base transceiver station ( It may also refer to a base transceiver station (BTS), a mobile multihop relay (MMR) -BS, and the like, and may include all or a part of functions of an access point, a wireless access station, a node B, an eNB, a base transceiver station, an MMR-BS, and the like. It may be.

Hereinafter, an apparatus and method for transmitting location information of a base station according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

An apparatus and method for transmitting location information of a base station according to an embodiment of the present invention will be exemplified as being applied to a passive heterogeneous access system detection method defined by an Institute of Electrical and Electronics Engineers (IEEE) 802.16m AWD (Amendment Working Document). The present invention is not limited to this.

1 is a view showing the structure of a frame for transmitting heterogeneous access system information in a passive heterogeneous access system detection method.

As illustrated in FIG. 1, one super frame includes a plurality of frames, and each frame includes a super frame header (SFH). Here, it is assumed that the length of one super frame is 20 ms and the length of one frame is 5 ms. That is, one superframe may be composed of four frames (Frame # 0 to Frame # 3).

The location information transmitting apparatus of the base station transmits heterogeneous access system information (AAI_ORAT-MSG) adjacent to or adjacent to the base station itself in one frame (eg, Frame # 2) of the super frame transmitted by the base station to the terminal. Insert it. Then, the terminal scans and detects base stations of the heterogeneous access system based on the heterogeneous access system information. At this time, the location information transmitting apparatus of the base station inserts a flag of heterogeneous access system information (Other RAT Information Flag) and a start frame number (SFN (Start Frame Number) Other RAT Information) into the super frame header.

The heterogeneous access system information may be a heterogeneous access system type (Radio Access Technology Type, RAT Type), a plurality of identifiers, a physical layer profile ID (PHY Profile ID), network information (Radio Access Network Information, RAN Information), point information (Radio Access). Point Information, RAP Information), and the like. Here, the plurality of identifiers may include a first identifier (Pre-registration supported) indicating whether a pre-registration procedure for quickly performing handover between the heterogeneous access systems is applicable, and a plurality of identifiers indicating whether the current serving base station is adjacent to the heterogeneous access system. 2 Includes a network boundary indication. In addition, the network information is information on the network included in the access system configured to meet the standards of the heterogeneous access system, the point information is the base station information of each heterogeneous access system, carrier frequency (carrier frequency), base station ID (BSID), It includes a preamble.

Next, a structure of a frame for transmitting heterogeneous access system information in the passive heterogeneous access system detection method will be described in detail with reference to FIG. 2.

2 is a diagram showing the structure of a frame for transmitting location information of a base station according to an embodiment of the present invention.

As illustrated in FIG. 2, one super frame includes a plurality of frames (Frame # 0 to Frame # 3), and each frame includes a super frame header (SFH). Here, the super frame header includes a flag of heterogeneous access system information (Other RAT Information Flag) and a start frame number (SFN (Start Frame Number) Other RAT Information).

According to an embodiment of the present invention, the frame is not only heterogeneous access system information (AAI_ORAT-MSG) adjacent or superimposed on the base station itself, but also the base station location information (RAP Location Information) and the base station type (RAP Type) of the heterogeneous access system. ).

The base station type of the heterogeneous access system includes a macro cell, a micro cell, a pico cell, a femto cell, and the like. Here, the macro cell is a base station type to be applied around the highway of 1 ~ 20km radius, the micro cell is a base station type to be applied to the urban area of 50 ~ 300m, the pico cell is a base station type to be applied in a 100m building, the femto cell is a home or office Etc. It is a miniature base station type for indoor mobile communication.

For example, if the heterogeneous access system type is a 3G Long Term Evolution (LTE) system and the base station type of the heterogeneous access system is a femtocell, if the terminal is located within a distance of at least 20 m from the base station, the base station is a terminal. This can be determined as an accessible base station.

Next, a structure of an apparatus for transmitting a frame including location information of a base station will be described in detail with reference to FIG. 3.

3 is a diagram illustrating a structure of an apparatus for transmitting location information of a base station according to an embodiment of the present invention.

First, a terminal according to an embodiment of the present invention is based on the location information (MS Location Information) of the terminal other than the heterogeneous access system information transmitted by the conventional serving base station, the base station location information of the heterogeneous access system and the base station type of the heterogeneous access system. Scan base stations. Here, the location information of the terminal can be known by measuring the radio waves from the global positioning system (GPS) and the neighboring base station.

As shown in FIG. 3, the apparatus 300 for transmitting location information of the base station includes a component 310, an extractor 320, an inserter 330, and a transmitter 340.

The configuration unit 310 configures a super frame transmitted to the terminal. Specifically, the super frame according to the embodiment of the present invention may be composed of, for example, four frames (Frame # 0 to Frame # 3). Each frame includes a super frame header and heterogeneous access system information adjacent or superimposed on the base station itself. Here, the super frame header includes a flag of the heterogeneous access system information and a start frame number.

The extractor 320 extracts location information of the base station of the heterogeneous access system. Here, the base station location information of the heterogeneous access system may be known based on an interworking technology or a backbone with the heterogeneous access system in the serving base station.

The inserting unit 330 inserts base station location information and base station type of the heterogeneous access system into the frame. In this case, the insertion unit 330 inserts base station location information of the heterogeneous access system and information on the base station type of the heterogeneous access system into the heterogeneous access system information. For example, the insertion unit 330 may insert not only a carrier frequency, a base station ID, a preamble, but also base station location information and a base station type of the heterogeneous access system in point information included in the heterogeneous access system information.

The transmitter 340 transmits a frame in which the location information of the base station is inserted to the terminal.

That is, the apparatus for transmitting location information of a base station according to an embodiment of the present invention transmits a frame into which the base station location information of the heterogeneous access system extracted by the serving base station is inserted to the terminal. The terminal determines whether the service is provided from the base station of the heterogeneous access system based on the propagation range of the base station of the heterogeneous access system. In this case, the terminal may infer the propagation range of the base station of the heterogeneous access system based on the heterogeneous access system type (RAT Type) and the base station type (RAP Type) of the heterogeneous access system.

Next, a method of transmitting location information of the base station will be described in detail with reference to FIG. 4.

4 is a flowchart illustrating a method of transmitting location information of a base station according to an embodiment of the present invention.

As shown in FIG. 4, the apparatus 300 for transmitting location information of a base station configures a frame including heterogeneous access system information (S401).

According to an embodiment of the present invention, a frame includes a super frame header and heterogeneous access system information adjacent or superimposed on the base station itself. Here, the super frame header includes a flag of the heterogeneous access system information and a start frame number.

The heterogeneous access system information includes a heterogeneous access system type, a plurality of identifiers, a physical layer profile ID, network information, point information, and the like. Here, the plurality of identifiers include a first identifier indicating whether a pre-registration procedure for quickly performing handover between heterogeneous access systems is applicable and a second identifier indicating whether the current serving base station is adjacent to the heterogeneous access system. In addition, the network information is information on the network included in the access system configured to meet the standard of the heterogeneous access system, the point information is the base station information of each heterogeneous access system, and includes a carrier frequency, a base station ID, and a preamble.

Next, the location information transmitting apparatus 300 of the base station extracts the location information of the base station of the heterogeneous access system from the serving base station based on the interworking technology or the backbone with the heterogeneous access system (S402).

The location information transmitting apparatus 300 of the base station inserts the extracted location information of the base station of the heterogeneous access system and the base station type into the frame (S403). For example, the apparatus 300 for transmitting location information of a base station may insert not only a carrier frequency, a base station ID, a preamble, but also base station location information and a base station type of point information included in the heterogeneous access system information.

The location information transmitting apparatus 300 of the base station transmits the frame to the terminal (S404).

Thus, the apparatus for transmitting location information of a base station according to an embodiment of the present invention transmits the base station location information of the heterogeneous access system and the heterogeneous access system information in which the base station type is inserted to the terminal so that the terminal selects the base station of the heterogeneous access system by itself. Enable scanning.

The embodiments of the present invention described above are not only implemented by the apparatus and method but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded, The embodiments can be easily implemented by those skilled in the art from the description of the embodiments described above.

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 (10)

In the method for transmitting the location information of the base station to the terminal,
Configuring, by the apparatus for transmitting location information of the base station, at least one frame including heterogeneous access system information; and
Inserting base station location information and base station type of the heterogeneous access system into the heterogeneous access system information;
Location information transmission method of the base station comprising a. The method of claim 1,
The heterogeneous access system information is
A method for transmitting location information of a base station including a heterogeneous access system type, a plurality of identifiers, a physical layer profile ID, network information, and point information. The method of claim 2,
Wherein the plurality of identifiers include an identifier indicating whether a pre-registration procedure for performing a handover between heterogeneous access systems is applicable and an identifier indicating whether a current serving base station is adjacent to the heterogeneous access system. The method of claim 2,
And the point information is base station information of a heterogeneous access system including at least one of a carrier frequency, a base station ID, and a preamble. The method of claim 4, wherein
Inserting base station location information and base station type of the heterogeneous access system
And inserting it into the point information. A configuration unit constituting at least one frame including heterogeneous access system information;
An extraction unit for extracting location information of a base station of a heterogeneous access system, and
Inserting unit for inserting the location information of the base station and the type of the base station in the at least one frame
Location information transmission apparatus of the base station comprising a. The method of claim 6,
The frame further includes a super frame header,
And the super frame header includes a flag of the heterogeneous access system information and a start frame number. The method of claim 6,
The heterogeneous access system information is
And a type, a plurality of identifiers, a physical layer profile ID, network information, and point information of the heterogeneous access system. The method of claim 8,
And inserting the location information of the base station and the type of the base station into the point information. The method of claim 8,
And the point information is base station information of a heterogeneous access system including at least one of a carrier frequency, a base station ID, and a preamble.

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