JPH1051374A - Radio repeater and radio channel relay system therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly establish a radio channel by performing connection with a base station as a mobile station to the base station and performing the connection with the mobile station as the base station to the mobile station. SOLUTION: The base station is connected to a public network 1 by using a wire channel and this radio repeater 5 is connected to the base station 3 by the radio channel. The radio repeater 5 identifies the base station 3 for instance as a master station among many base stations and maintains a communication channel at the time of communication. On the other hand, since the radio repeater 5 performs the connection of the radio channel by using an origination identification code as the mobile station, the base station 3 recognizes it simply as a normal mobile station. The mobile station 7 performs communication with the base station, 3 directly or through the radio repeater 5 corresponding to a radio wave state at the time. At the time, since the radio repeater 5 performs the connection of the radio channel by using the origination identification code as the base station, the mobile station 7 recognizes it as a normal base station and does not distinguish it from an original base station.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a second generation cordless telephone system, a so-called personal handy phone system (hereinafter simply abbreviated as "PHS"), which relays radio waves from the public or private base stations to increase the use area of PHS. The present invention relates to a wireless relay device that can be easily expanded and a wireless channel relay method in the wireless relay device.

[0002]

2. Description of the Related Art Conventionally, in radio communication, the same information as that transmitted from a base station at a specific radio frequency via a radio relay device is amplified and relayed to a terminal using the same radio frequency. There is a wireless relay system for amplifying and relaying the same information as information transmitted from a terminal at a specific radio frequency to a base station using the same radio frequency.

FIG. 5 shows an example in which such a wireless relay system is applied to a PHS. In FIG. 5, in the conventional wireless relay device 9, since the received radio wave is simply amplified and transmitted, the radio wave transmitted by the source base station 3 and the radio wave transmitted by the wireless relay device 9 are transmitted. Although the timing is different, the frequency of the radio wave to be used and the base station 3 of the transmission source
Are exactly the same.

FIG. 6 shows a connection procedure in such a wireless relay device 9. Referring to FIG. 6, steps S121, S121
111 is a link channel request, steps S113 and S1
23 is a link channel assignment, steps S125 and S11
5 and steps S117 and S127 indicate link channel establishment, respectively. In this connection procedure, it is required that the connection be established immediately after link channel allocation.
In this connection procedure, link channel allocation (step S1
From 13) to the establishment of the link channel (step S115), the processing time in both the wireless relay device 9 and the mobile station 7 is added. Similarly, during the establishment of the link channel (steps S125 and S127), the processing time in both the wireless relay device 9 and the base station 3 is added. That is,
If the processing time for these additions can be reduced,
It is possible to quickly establish a wireless channel.

As shown in FIG. 7, when the mobile station 7 starts communication, the reception levels of the radio wave transmitted from the base station 3 and the radio wave transmitted via the radio relay device 9 are substantially the same. In this case, since the mobile station 7 has the same information such as the identification code transmitted by the base station 3 and the wireless relay device 9, there is a problem that it is difficult for the mobile station 7 to identify and specify the communication partner.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to distinguish between a radio wave from a base station or a mobile station relayed by a conventional radio relay apparatus and a radio wave from a base station or a mobile station as an original transmission source. The present invention solves the problems of the conventional wireless relay device and its wireless channel relay method, which cannot perform wireless communication, and provides a wireless relay device and its wireless channel relay method capable of quickly establishing a wireless channel. is there.

[0007]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, there is provided a wireless communication system for relaying communication between a base station and a mobile station of a personal handyphone system. A wireless channel relay method in a relay device, wherein the wireless relay device performs a connection with a base station as a mobile station to the base station, and a connection with the mobile station as a base station to the mobile station. The point is to do it.

Thus, in the wireless channel relay system according to the first aspect, when connecting to the base station as the master station, the base station is connected to the base station as the master station when connecting to the mobile station. Operate as a different base station, that is, a base station different from the base station to which the wireless relay device is connected as a mobile station.

The invention according to claim 2 is a wireless channel relay system in a wireless relay device that relays communication between a base station and a mobile station of a personal handyphone system, wherein the wireless relay device is The wireless relay device establishes a connection with the base station using a first identification code assigned as a mobile station, and the wireless relay device establishes a connection with the mobile station using a second identification code assigned as a base station. The point is to make a connection.

[0010] With this, in the wireless channel relay system according to the second aspect, the base station transmits the first channel assigned to the wireless relay device.
Recognize the wireless relay device as a mobile station with the identification code of, and perform connection, and when connecting with the mobile station,
Since the mobile station recognizes the wireless relay device as a base station by using the second identification code given to the wireless relay device and performs connection, for example, the mobile station does not confuse the base station with the wireless relay device. .

According to a third aspect of the present invention, there is provided a wireless channel relay system according to the first or second aspect, wherein communication between the wireless relay device and the base station and communication between the wireless relay device and the mobile station are performed. Is performed using specific radio frequencies selected from the same frequency band.

According to a fourth aspect of the present invention, there is provided a wireless relay apparatus for relaying communication between a base station and a mobile station of a personal handyphone system, wherein the wireless relay apparatus uses a first identification code assigned as a mobile station. Base station connecting means for making a connection with the base station, mobile station connecting means for making a connection with the mobile station using a second identification code assigned as the base station, and communication from the base station side Communication means for transmitting to the mobile station using a specific radio channel different from the received radio channel and transmitting to the base station using a specific radio channel different from the radio channel that received the communication from the mobile station. It is the gist to have.

According to the wireless relay apparatus of the present invention, the base station recognizes the wireless relay apparatus as a mobile station based on the first identification code given to the wireless relay apparatus, and communicates with the base station via the base station connecting means. In connection with the mobile station, the mobile station establishes a second connection provided to the radio relay apparatus.
The wireless relay device is recognized as a mobile station by the identification code of the mobile station, a connection is established via the mobile station connecting means, and communication between the wireless relay device and the base station and communication between the wireless relay device and the mobile station are further performed. Since communication is performed using different wireless channels, for example, the mobile station does not need to be confused with the base station and the wireless relay device, and needs to be aware that the mobile station communicates with the base station via the wireless relay device. In addition, there is no need to add a new function or the like for performing communication with the wireless relay device.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings. FIG. 1 shows a PHS according to the present invention.
1 is a block diagram showing a system configuration of FIG.

In the system configuration shown in FIG. 1, a base station 3 is connected to the public network 1 by using a wired line, and a radio relay device 5 that does not move at all in a normal state is connected to the base station 3 by using a wireless line. It is connected. In the present embodiment,
The wireless relay device 5 identifies the illustrated base station 3 as a master station among a number of base stations, and maintains a communication line during communication. On the other hand, the base station 3 recognizes only a normal mobile station because the wireless relay device 5 connects the wireless channel using the calling identification code as the mobile station.

The mobile station 7 is a normal PHS terminal, and communicates with the base station 3 directly or via the wireless relay device 5 depending on the radio wave condition at that time. At this time, the mobile station 7
Since the wireless relay device 5 connects the wireless channel using the calling identification code as the base station, the wireless relay device 5 recognizes the wireless base station as a normal base station and does not distinguish it from the original base station.

Next, the operation of this embodiment will be described with reference to FIG. First, when receiving a call from the mobile station 7, the wireless relay device 5 connects the base station 3 to a wireless channel using a specific wireless frequency using a calling identification code as the mobile station. When the communication line between the wireless relay device 5 and the base station 3 is set, the wireless relay device 5 subsequently establishes a connection between the mobile station 7 and a wireless channel using a specific wireless frequency using a calling identification code as a base station. A connection is established, and a communication line with the mobile station 7 is set. Thus, a communication line between the base station 3 and the mobile station 7 via the wireless relay device 5 is set.

As described above, the information received from the base station 3 is received as a mobile station and transmitted to the mobile station 7 as a base station. As a result, the radio relay apparatus 5 is completely different from the base station 3 from the mobile station. Looks like a base station. Therefore, even when the position of the mobile station 7 is substantially the same with respect to both the base station 3 and the wireless relay device 5, the mobile station 7 has its own connection destination with the base station 3 and the wireless relay device 5 as a base station. It can be easily recognized which of the two is. Further, since the wireless relay device 5 is connected to the mobile station 7 using the same specific radio frequency as the base station 3 as a base station, there is no need to distinguish the frequency to be used from the base station 3. Accordingly, when performing communication via the wireless relay device 5, the mobile station 7 does not need to have a transmission / reception function for different frequency bands, for example.

Next, an example of the configuration of the wireless relay device 5 will be described with reference to FIG. As shown in FIG. 2, the wireless relay device 5 includes a mobile station unit 5a, a base station unit 5b, and a control unit 63 that controls them. Further, a mobile station unit 5a that performs communication with the base station 3 is connected to an antenna, and a transmission / reception switching unit 51 that switches between reception and transmission when transmitting and receiving communication via the antenna; The base station communication unit 53 includes a unit 53T and a reception unit 53R, and performs modulation, demodulation, and transmission / reception, and a base station unit connection unit 55 that connects to the base station unit 5b. Further, a base station unit 5b for performing communication with the mobile station 7 is connected to an antenna, and a transmission / reception switching unit 61 for switching between reception and transmission when transmitting and receiving communication via the antenna; A mobile station communication unit 59 that includes a unit 59T and a receiving unit 59R, and performs modulation, demodulation, and transmission / reception;
It is constituted by a mobile station connection section 57 for connecting to the mobile station section 5a.

Next, a communication connection procedure according to the present embodiment will be described with reference to FIG. Here, steps S21 and S11 are link channel requests, and step S1
3, S23 is link channel allocation, steps S25, S
15 and steps S17 and S27 show a link channel establishment procedure, respectively.

First, in step S21, a link channel request is transmitted from the mobile station 7 to the base station 3.
The base station unit 5b of the wireless relay device 5 that has received the link channel request as a base station transmits the link channel request as a mobile station via the mobile station unit 5a (step S1).
1). As a result, when the base station 3 assigns a link channel to the mobile station 5a in step S13, the mobile station 5
a establishes a link channel (steps S15, S1)
7). Thereafter, the base station unit 5b allocates a link channel to the mobile station 7 (step S23) and establishes a link channel (steps S25 and S27).

That is, between the link channel assignment (step S13) and the link channel establishment (step S15), the processing time of the radio relay device 5 (mobile station unit 5a) is similarly set to the link channel establishment (steps S25 and S2).
Between 7), only the processing time of the wireless relay device 5 (the base station unit 5b) needs to be considered. This makes it possible to quickly establish a link channel.

Next, referring to FIG. 4, the flow of signals when relaying communication via the wireless relay device 5 will be described. Here, the frequency and the slot used between the base station 3 and the mobile station unit 5a are selected by the base station 3, and the control unit 63 recognizes this. The frequency and the slot used between the base station unit 5b and the mobile station 7 are selected by the base station unit 5b. At this time, the information of the frequency and the slot used by the mobile station unit 5a is received from the control unit 63. It is determined.

Here, the frequency used between the base station 3 and the mobile station 5a is f1 and the slot is s1. Similarly, the frequency used between the base station 5b and the mobile station 7 is f2.
When the slot is s2, f1 = f2 and s11s
2 or f1 ≠ f2 and s1 = s2,
f1 = f2 and s1 = s2 do not hold.

The mobile station unit 5a communicates with the base station 3

## EQU1 ## (CS-ID (base station 3)) + (PS-ID
Data is transmitted / received in the form of (mobile station unit 5a) + (data). Similarly, the base station unit 5
b is for communication with the mobile station 7,

## EQU2 ## (CS-ID (base station unit 5b)) + (PS-I
D (mobile station 7)) + (data) Data is transmitted and received. At this time, only (data) is transmitted and received between the mobile station unit 5a and the base station unit 5b.

As described above, a radio relay apparatus to which the present radio channel relay system is applied realizes a relay function as a result, but the entities are a mobile station and a base station, and perform frequency conversion. The data is not replaced, but the data is replaced.

[0027]

As described above, when the radio relay apparatus to which the radio channel relay method of the present invention is applied is used, the base station and the mobile station can quickly establish a radio channel, This improves the connection quality, and the mobile station recognizes the wireless relay device as a completely different base station from the source base station, so that the mobile station can easily grasp the base station to be connected. In addition, it is possible to improve communication quality, and since the frequency used by the wireless relay device is not distinguished from the frequency used on the base station side, a special function for performing communication via the wireless relay device is provided. There are effects such as not having to be provided in the mobile station.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of a PHS to which the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration of a wireless relay device to which the present invention is applied.

FIG. 3 is a diagram for explaining a communication connection procedure in the wireless channel relay system of the present invention.

FIG. 4 is a block diagram showing signal contents when relaying communication via a wireless relay device to which the present invention is applied;

FIG. 5 is a block diagram showing a PHS system configuration according to a conventional technique.

FIG. 6 is a diagram for explaining a connection procedure of communication via a wireless relay device in a conventional PHS.

FIG. 7 is a block diagram for explaining a problem in a PHS according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Public network 3 Base station 5 Radio relay apparatus 7 Mobile station 51, 61 Transmission / reception switching part 53 Base station communication part 55 Base station connection part 57 Mobile station connection part 59 Mobile station communication part 63 Control part

Claims (4)

[Claims] 1. A wireless channel relay system in a wireless relay device for relaying communication between a base station and a mobile station of a personal handyphone system, wherein the wireless relay device establishes a connection with the base station. A wireless channel relay method, wherein the wireless channel relay method is performed as a mobile station for a base station, and connection with the mobile station is performed as a base station for the mobile station. 2. A wireless channel relay system in a wireless relay device that relays communication between a base station and a mobile station of a personal handyphone system, wherein the wireless relay device is provided with the wireless relay device as a mobile station. Connection with the base station using the obtained first identification code, and connection with the mobile station using the second identification code given as the base station. Wireless channel relay method. 3. The radio channel according to claim 1, wherein the radio relay apparatus selects and uses communication with the base station and communication with the mobile station from the same frequency band. Relay method. 4. A wireless relay device for relaying communication between a base station of a personal handyphone system and a mobile station, wherein the connection with the base station is established by a first identification code assigned as the mobile station. A base station connecting means for performing the connection, a mobile station connecting means for performing a connection with the mobile station by the second identification code given as the base station, and a radio channel different from the communication channel from the base station side Communication means for transmitting to the mobile station using a specific wireless channel and transmitting to the base station using a specific wireless channel different from the wireless channel receiving communication from the mobile station. apparatus.