JP2002051002A - Radio repeater and position information system for private use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio repeater and a position information system for private use where identification numbers of marker stations required for building up the system can quickly be transmitted and the marker stations can flexibly and easily be arranged. SOLUTION: In the position information system, the marker stations are arranged in a tree, where a route station is placed in the highest layer and the other marker stations are hierarchically arranged from the 1st layer to the n-th layer, and a personal computer 10 is connected to the route station. When the route station communicates with a PHS terminal 20 through each of the marker stations, the route station obtains a call signal identification code (CS-ID) of a nearby marker station of the PHS terminal 20 and can recognize a current position of the PHS terminal 20 by discriminating the identification number and the hierarchical number of the marker station included in the CS-ID and checking a corresponding installed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a PHS (Personal
The present invention relates to a wireless repeater for relaying communication from a mobile wireless terminal such as a Handyphone System), and a private location information system using the same.

[0002]

2. Description of the Related Art Self-owned communication networks using PHS are becoming widespread in buildings and premises.
A private location information system can be considered by using the location specifying function of the HS. For example, if a visitor carries a PHS terminal in a high-rise building or a large event venue, and the person becomes lost or loses his / her location, the system administrator can locate the PHS terminal on the screen of a personal computer (personal computer). By searching for, a lost person can be easily searched.

[0003] As an aspect of use of such a location information system, a) an administrator operates a personal computer to grasp the position of a PHS terminal, and b) a PHS carrier connects his / her PHS terminal to the personal computer to determine the current position. Grasping, c) the visitor operates a personal computer to grasp the position of a specific PHS carrier,
And so on.

[0004] As a related prior art, Japanese Patent Laid-Open No. 11-1 is disclosed.
In 78044, a position detection system using a mobile communication system is proposed. In addition, Japanese Patent Application Laid-Open No. 6-153
No. 264 proposes a digital cordless telephone that allows a mobile station to determine various status information of a base station.

[0005]

In the conventional PHS location information system, as shown in FIG. 1, the root station is the highest layer, and a plurality of marker stations are arranged in a tree form for each layer from the first layer to the nth layer. May be placed. A personal computer is connected to the root station.
When communicating with the S terminal, the identification number of the marker station closest to the PHS terminal is obtained, and the current position of the PHS terminal can be known by checking the installation position of the marker station corresponding to this identification number.

In the position information system having such a hierarchical structure, the marker station belonging to the k-th layer needs to be wirelessly connected to the marker station belonging to the (k-1) -th layer which is higher by one. Therefore, the marker station of the k-th layer needs to know the layer number of the marker station of the wireless connection partner by some means.

In the current PHS system, as means for transmitting hierarchical information, storing hierarchical information in control channel information periodically transmitted by a root station or a marker station may be considered. However, each marker station cannot determine its own hierarchical information unless it has received all control channel information, and it takes time for the entire system to synchronize wirelessly.

An object of the present invention is to provide a radio repeater and a private position information system capable of promptly transmitting an identification number of a marker station required for system construction, and arranging a marker station flexibly and easily.

[0009]

SUMMARY OF THE INVENTION The present invention is a wireless repeater for relaying communication between a mobile wireless terminal and another wireless repeater, and for identifying a communication system to which the wireless repeater belongs. Storage means for storing a system call code, control channel information communication means for transmitting control channel information including a caller identification code including the system call code and system management information to another wireless repeater, Determining means for determining a system call code transmitted from the wireless relay apparatus, and control means for controlling a relay operation based on system management information transmitted from another wireless relay apparatus, and storing The means stores an individual identification code for identifying itself, and the control channel information communication means stores and transmits the individual identification code in the source identification code. It is.

According to the present invention, when transmitting the control channel information to another wireless repeater, the individual identification code is stored and transmitted in the source identification code, so that the wireless relay on the receiving side can transmit. The identification information on the wireless repeater on the side can be immediately known. Therefore, it is not necessary to receive all control channel information, so that the time required for system construction can be reduced.

The present invention also provides a communication system having a tree structure including a plurality of layers such that a radio relay station belonging to a lower layer performs a relay operation with a predetermined radio relay station belonging to an upper layer. The individual identification code includes an identification number unique to the own device and a hierarchical number of the own device.

According to the present invention, when the communication system has a tree structure composed of a plurality of layers, the receiving end is transmitted by transmitting an identification number unique to the own device and an individual identification code including the own layer number. Can immediately know the hierarchical information about the transmitting-side wireless repeater. Therefore, it is not necessary to receive all control channel information, so that the time required for system construction can be reduced.

Further, the present invention is configured in a tree structure including a plurality of layers so that a radio repeater belonging to a lower hierarchy performs a relay operation with a predetermined radio repeater belonging to an upper hierarchy. A private position information system in which a wireless repeater determines the position of a wireless repeater that relays communication of a mobile wireless terminal, wherein an upper hierarchical wireless repeater sends a system call code to a lower hierarchical wireless repeater. The control channel information including the caller identification code and the system management information is sequentially transmitted to control the relay operation of the entire system, and the identification number unique to each wireless repeater and each wireless repeater are included in the caller identification code. The private position information system is characterized in that an individual identification code including a hierarchical number is stored.

According to the present invention, when transmitting the control channel information to another wireless repeater, the individual identification code including the identification number and the hierarchical number is stored and transmitted in the calling identification code. The wireless repeater on the receiving side can immediately know the identification information and the hierarchical information on the wireless repeater on the transmitting side. Therefore, it is not necessary to receive all control channel information, so that the time required for system construction can be reduced.

[0015]

FIG. 1 is a configuration diagram showing an example of a self-employed location information system to which the present invention can be applied. In this position information system, a root station is set as the highest layer, and a plurality of marker stations are arranged in a tree form for each layer from the first layer to the n-th layer. The root station and the marker station are configured as a wireless repeater that relays communication between the PHS terminal 20, which is a mobile wireless terminal, and another marker station or a root station.

A personal computer 10 is connected to the root station, and when the root station communicates with the PHS terminal 20 through each marker station, the identification number (CS-ID) of the marker station closest to the PHS terminal 20 is obtained. -The current position of the PHS terminal 20 can be known by determining the identification number and the layer number of the marker station included in the ID and checking the corresponding installation position.

In the position information system having such a hierarchical structure, the marker station belonging to the k-th layer needs to be wirelessly connected to the marker station belonging to the (k-1) -th layer which is higher by one. By determining the layer number stored in the CS-ID, the marker station can know the layer number of the marker station to be wirelessly connected.

FIG. 2 is a block diagram showing an electrical configuration of the marker station according to the present invention. The marker station is a storage device 1
, A wireless device 2 and a control device 3.

The storage device 1 is composed of a memory or the like, and stores various data such as a hierarchy number of the own station, a device identification number in a hierarchy, a system call code for identifying a communication system, and the like.

The radio apparatus 2 includes a modulation circuit, a demodulation circuit, a high-frequency circuit, an antenna, and the like, modulates data supplied from the control apparatus 3 and transmits radio waves from its own station, and transmits radio waves from other stations. The received data is demodulated and supplied to the control device 3.

The control unit 3 includes a control unit 5 such as a CPU (central processing unit) and various routines such as an additional ID discrimination unit 4, and controls the overall operation according to a predetermined program.

As shown in FIG. 1, when marker stations are arranged in each of the first to n-th layers, the marker station transmits another marker in order to synchronize itself with another marker station in the system. Search the control channel information transmitted from the station.

FIG. 3 is an explanatory diagram showing an example of the data format of the control channel information. The control channel information defines a BCCH (broadcast channel), a PCH (broadcasting channel), an SCCH (individual cell channel), and the like. The data format starts with BCCH,
Channel type C for distinguishing PCH, SCCH, etc.
An I code is stored, then a caller identification code (CS-ID) is stored, and an information section for storing information corresponding to the channel type is secured. In the SCCH, a destination identification code is also stored following a calling identification code.

The control channel information is provided separately from a normal relay operation in order to periodically transmit system management information for managing the operation of the entire system from the root station to each marker station belonging to each layer. Stipulated.

As a result of searching the control channel information, the own marker station usually synchronizes with the other marker station having the strongest radio wave,
Start CCH reception.

FIG. 5 is an explanatory diagram showing the operation of transmitting control channel information. Here, an example in which hierarchical information is stored in the information section of the BCCH will be described.

In the position information system having a hierarchical structure, the marker station M1 belonging to the first layer receives the BCCH transmitted from the root station, and then changes the layer information stored in the information section of the BCCH to its own layer number " Rewrite to "1" and transmit. After receiving the BCCH transmitted from the marker station M1, the marker station M2 belonging to the second layer rewrites the layer information stored in the information section of the BCCH to its own layer number "2" and transmits it. After receiving the BCCH transmitted from the marker station M2, the marker station M3 belonging to the third layer rewrites the layer information stored in the information section of the BCCH to the layer number "3" of the own station and transmits the same. Thereafter, the BCCH storing the upper layer number is transmitted from the marker station belonging to the upper layer to the marker station belonging to the lower layer.

PCH and SC which are other control channel information
The CH is also sequentially transmitted to the marker stations belonging to the lower hierarchy.

When a new marker station is arranged, for example, in the second layer, the new marker station needs to retrieve control channel information and synchronize with the transmission operation of the existing marker station M2.

FIG. 6 is a flowchart showing an example of the synchronization operation of the new marker station. First, in step A1,
Search for control channel information transmitted in the system.
Here, if the search is started at time t2 in FIG. 5, the SCCH transmitted by the marker station M3, the PCH transmitted by the marker station M1, and the PCH transmitted by the marker station M2 are received.

Next, in step A2, a search is made for a marker station that the new marker station has been able to receive with the maximum radio wave intensity. Here, assuming that the marker station that can be received at the maximum level is the marker station M3, the new marker station is hereinafter referred to as the marker station M
3 receives the control channel information transmitted.

Next, in step A3, the new marker station receives the BCCH transmitted by the marker station M3, and
4, the layer information stored in the information section of the BCCH is extracted, and whether the number matches the number obtained by subtracting one from the layer number of the own station, that is, whether the marker station M3 belongs to the next higher layer Is determined. Here, the marker station M3
Is the layer number of “3” and the layer number of the new marker station is “2”, which indicates that the marker station M3 is not a higher layer for the new marker station. Thereafter, the control channel information transmitted by the marker station M3 is ignored, and the steps from step A1 are repeated to search for a new higher-layer marker station. Finally, if the marker station M1 having the layer number "1" can be found from the marker stations having the strong reception level, the process proceeds to step A5, where the marker station M
1 synchronizes with the control channel information transmitted.

There are various types of BCCH such as radio channel information broadcast, system information broadcast, and option information broadcast. However, since there is no provision for broadcasting hierarchy information,
Hierarchical information is broadcast using the option information broadcast. As shown in FIG. 5B, the root station and the marker station sequentially transmit the BCCHs corresponding to the broadcast contents. Therefore, in the synchronization operation of the new marker station, it is necessary to repeat the search any number of times until the BCCH accompanied by the notification of the option information can be received.

In order to avoid such a repeated search, it is preferable to add hierarchical information to all control channel information. For example, as shown in FIG. 3, since each control channel information includes a calling identification code (CS-ID), all the control Chs are stored by storing hierarchical information in the calling identification code.
Can be added to

FIG. 4 is an explanatory diagram showing an example of the data format of the caller identification code. Here, the caller identification code (C
S-ID) is composed of 42 bits, the first 29 bits are assigned to the system call code, and the remaining 13 bits are added
Assign as D. The system call code is a system-specific code required for radio management, and is used to identify the communication system between itself and another communication system.

The additional ID is a code that can be used arbitrarily for each communication system. As shown in FIG. 4, a device identification number within a layer and a layer number are set in the additional ID area. The in-layer device identification number is a number for individually identifying a marker station belonging to the same layer. When the position search of the PHS terminal 20 is performed, the position of the nearest marker station can be specified by transmitting the in-layer device identification number and the layer number of the marker station nearest to the PHS terminal 20 to the root station.

When a new marker station is installed, the control device 3
Makes a search request for control channel information to the wireless device 2, the wireless device 2 searches for control channel information, and the search result is taken into the control device 3. The control unit 5 transmits the caller identification code (CS-I) included in the control channel information of the search result.
The additional ID in D) is transmitted to the additional ID determining unit 4. Additional I
The D determining unit 4 compares the layer number included in the searched additional ID with the layer number of the own station stored in the storage device 1 and determines that the marker station to be searched is from the own station. It is determined whether or not it belongs to the next higher hierarchy, and the determination result is transmitted to the control unit 5. The control unit 5 informs the wireless device 2 to synchronize with the marker station having the strongest radio wave among the marker stations belonging to the hierarchy one level higher than the own station. When the synchronization is completed, the in-hierarchical device identification number and the own station's hierarchical number are set as the additional ID of the control channel information transmitted by the own station, and transmission of control channel information is started.

As shown in FIG. 5 (a), when each marker station is transmitting control channel information in a synchronized manner and a new marker station is arranged, for example, on the second layer, the new marker station is placed on the control channel. The information is searched, and the existing marker station M2 is searched.
It is necessary to synchronize with the transmission operation.

FIG. 7 is a flowchart showing another example of the synchronization operation of the new marker station. First, in step B1, control channel information transmitted in the system is searched. Here, if the search is started at time t2 in FIG. 5, the SCCH transmitted by the marker station M3, the PCH transmitted by the marker station M1, and the PCH transmitted by the marker station M2 are received.

Next, in step B2, the additional ID discriminating section 4 discriminates the additional ID in the caller identification code (CS-ID) included in the received control channel information, and transmits the control station information to the marker station. Get the hierarchy number of A marker station M1 belonging to a layer one level higher than the own station is found out of the obtained layer numbers, and is synchronized with control channel information transmitted by the marker station M1. Next, the in-hierarchical device identification number and the own station's hierarchical number are set in the additional ID area of the received control channel information, and the control channel information is transmitted.

Next, in step B3, when there are a plurality of marker stations belonging to the hierarchy one level higher than the own station, the marker station that can be received with the maximum radio wave intensity is selected. In step B4, the synchronization operation ends.

By setting the layer number in the additional ID of the calling identification code (CS-ID), the layer number of the transmitting marker station can be immediately known when the control channel information is received. The time required for construction can be reduced.

Since the additional ID can be set arbitrarily, by changing this value, it is possible to easily change the system hierarchy or relocate the marker station.

[0044]

As described above in detail, according to the present invention, when transmitting control channel information to another wireless repeater, an identification number unique to the own apparatus and a hierarchical number of the own apparatus are included in the calling identification code. By storing and transmitting the individual identification code including
The receiving-side wireless repeater can immediately know the identification information about the transmitting-side wireless repeater. Therefore, it is not necessary to receive all control channel information, so that the time required for system construction can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of a private location information system to which the present invention can be applied.

FIG. 2 is a block diagram showing an electrical configuration of a marker station according to the present invention.

FIG. 3 is an explanatory diagram showing an example of a data format of control channel information.

FIG. 4 is an explanatory diagram showing an example of a data format of a caller identification code (CS-ID).

FIG. 5 is an explanatory diagram showing a transmission operation of control channel information.

FIG. 6 is a flowchart illustrating an example of a synchronization operation of a new marker station.

FIG. 7 is a flowchart illustrating another example of the synchronization operation of the new marker station.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 storage device 2 wireless device 3 control device 4 additional ID determination unit 5 control unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Eisuke Kudo 2-3-1 Otemachi, Chiyoda-ku, Tokyo Within Nippon Telegraph and Telephone Corporation (72) Inventor Akinori Shibuya 2--3, Otemachi, Chiyoda-ku, Tokyo No. 1 Inside Nippon Telegraph and Telephone Corporation (72) Inventor Akihiko Uchiyama 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (72) Inventor Tetsu Kyogoku 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka No. Sharp Corporation F term (reference) 5K033 AA02 CB01 DA01 DA19 DB20 EA06 5K067 AA14 BB04 BB36 DD13 DD17 DD25 EE02 EE06 EE13 HH22 HH23 JJ13 JJ51 5K072 AA16 BB13 BB15 CC01 CC35 DD11 DD15 EE21

Claims (3)

[Claims] 1. A wireless repeater for relaying communication between a mobile wireless terminal and another wireless repeater, for storing a system call code for identifying a communication system to which the wireless repeater belongs. Storage means, control channel information communication means for transmitting control channel information including a caller identification code including a system call code and system management information to another wireless repeater, and transmission means transmitted from another wireless repeater. A determination unit for determining a system call code; and a control unit for controlling a relay operation based on system management information transmitted from another wireless relay device, wherein the storage unit identifies the own device. And a control channel information communication means for storing and transmitting the individual identification code in the source identification code. 2. The communication system is configured in a tree structure including a plurality of layers so that a wireless repeater belonging to a lower layer performs a relay operation with a predetermined wireless repeater belonging to an upper layer. The wireless relay device according to claim 1, wherein the code includes an identification number unique to the own device and a hierarchical number of the own device. 3. A radio repeater of the highest hierarchy, wherein the radio repeater belonging to a lower hierarchy is configured to have a tree structure including a plurality of hierarchies so as to perform a relay operation with a predetermined radio repeater belonging to an upper hierarchy. Is a private location information system for determining the position of a wireless repeater that relays communication of a mobile wireless terminal, wherein a higher-layer wireless repeater identifies a lower-layer wireless repeater to a caller including a system call code. The control channel information including the code and the system management information is sequentially transmitted to control the relay operation of the entire system, and the identification number unique to each wireless repeater and the hierarchical number of each wireless repeater are included in the source identification code. A private position information system characterized by storing an individual identification code including: