JP2003234694A - Radio relay device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio relay device to be used in a PHS (personal handyphone system) the use range of which can be expanded by realizing a use form desired by a user. <P>SOLUTION: The radio relay device is provided with a communication means 101 to a base station that performs communication with a public base station 7A with a public radio frequency f<SB>1</SB>, a communication means 97 to a terminal that performs communication with a radio terminal 11 with a self-support radio frequency f<SB>3</SB>, a conversion means 99 that converts the received communication from the public base station 7A with the public radio frequency f<SB>1</SB>into the communication with the self-support radio frequency f<SB>3</SB>and simultaneously converts the communication from the radio terminal 11 with the self-support radio frequency f<SB>3</SB>into the communication with the public radio frequency f<SB>1</SB>, and a means that disregards a communication channel switching instruction signal to other public base stations to be transmitted from the public base station 7A when communication quality while performing communication with the public base station 7A is degraded. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal handyphone system (hereinafter abbreviated as PHS), and in particular, in a predetermined area such as indoors by relaying radio waves from a public base station using a wireless relay device. The present invention relates to a wireless relay device used in a PHS configured to expand a PHS usage area.

[0002]

2. Description of the Related Art Conventionally, in wireless communication, the same information as the information transmitted from a public base station through a wireless relay device via a public radio frequency is amplified and relayed to a terminal side using the public radio frequency. However, there is a wireless relay system that amplifies and relays the same information as the information transmitted from the terminal on the public wireless frequency to the public base station side using the public wireless frequency.

In PHS, the radio frequency band of 1.9 GHz is used, and in principle, different frequency bands are assigned to the public radio frequency and the private radio frequency in order to ensure frequency utilization efficiency. ing.

[0004]

However, in the conventional radio relay system, when the public radio frequency is used on both the public radio base station side and the radio terminal device side, the radio relay device becomes a public telecommunication facility. Therefore, maintenance and monitoring are required as a public company, and the user cannot purchase and manage the wireless relay device. Therefore, it is difficult to desire a sufficient installation of the wireless relay device.

In addition, in the conventional wireless relay system, since the wireless relay device does not have a registration function, it is not possible to register the wireless terminal device that uses the wireless relay device. Even if the relay device can be purchased, there is a problem that the use of the wireless relay device cannot be limited to a specific wireless terminal device and effective use cannot be measured.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a radio relay apparatus suitable for use in a PHS capable of expanding the range of use by realizing the type of use desired by the user. To aim.

[0007]

The first feature of the present invention is to:
From the public base station that has received the public base station, communication with the public base station using a public radio frequency, communication with the base station, communication with the wireless terminal device using a private radio frequency A conversion means for converting the communication by the public radio frequency into the communication by the private radio frequency, and converting the communication by the private radio frequency from the wireless terminal device into the communication by the public radio frequency; A wireless relay device including means for ignoring a communication channel switching instruction signal transmitted from the public base station to another public base station when the communication quality during communication with the public base station deteriorates. The main point is.

A second feature of the present invention is that in the above-mentioned first feature, a registration means for registering a wireless terminal device that can use the wireless relay device and a communication received via the terminal communication means. Is provided from the wireless terminal device registered by the registration means, and a control means for performing communication.

A third feature of the present invention is that, in the above-mentioned second feature, the registration means completes the position registration in the first communication network of the wireless terminal device via the wireless relay device. The main point is to register the wireless terminal device.

The fourth feature of the present invention is to provide the above-mentioned first to third features.
In any one of the above characteristics, the information bit and the CRC bit scrambled in each slot when communicating with the public base station or the wireless terminal device are relayed without descramble processing. Is the gist.

That is, a fourth feature of the present invention is that the CRC code error between the public base station and the wireless relay device or between the wireless relay device and the wireless terminal device is directly reflected in the wireless relay device and the wireless terminal device. And between the wireless relay device and the public base station.

[0012]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a PHS system including a wireless relay device to which the present invention is applied.

In FIG. 1, a public communication network 1 has a location registration database 3, a general subscriber telephone 5 and a public base station 7.
Wired connection to A, 7B, and 7C. These public base stations 7A, 7B, 7C can communicate with any PHS terminal 13.

The public base station 7A is connected to the wireless relay device 9 via a wireless line having a public wireless frequency f1.
The wireless relay device 9 is connected to the PHS terminal 11 via a wireless line having a private-use wireless frequency f3.

Further, for example, the public base station 7C is connected to and communicates with the PHS terminal 13 via a radio line having a public radio frequency f2. As a result, in the normal communication mode, the PHS terminal 13 receives the general subscriber telephone 5 or another P telephone via the public base station 7C connected to the public communication network 1.
It is possible to communicate with an HS terminal or the like.

Next, an example of the configuration of the wireless relay device 9 shown in FIG. 1 will be described with reference to FIG. As shown in FIG. 2, in the wireless relay device 9, the control unit 91 and the control unit 91 are connected via a bus.
Memory 93, PHS terminal number registration memory 95, P
The HS terminal communication function unit 97, the signal processing unit 99, and the public base station communication function unit 101 are connected to each other.

At this time, the PHS terminal communication function unit 97 and the signal processing unit 99 are directly connected, and the signal processing unit 99 and the public base station communication function unit 101 are directly connected. The control unit 91 is provided with a mode changeover switch 103. Further, the wireless relay device 9 is provided with a power source 105 that supplies electric power to each of the blocks.

Next, the operation of each block will be described. First, the control unit 91 controls the operation of each block via the bus. The control unit 91 determines whether the input communication is from the PHS terminal 11 registered in the PHS terminal number registration memory 95, in addition to the control related to the normal communication. Further, the control unit 91 changes the wireless relay device 9 to a registration mode described later according to inputs from the mode changeover switch 103 and an input unit (not shown), or PHS in the registration mode.
For example, registering the terminal number.

The memory 93 stores, for example, a program for controlling the control section 91. Further, the PHS terminal number registration memory 95 stores and registers the PHS terminal number input in the registration mode.

The PHS terminal communication function unit 97 communicates with the PHS terminal 11 via the wireless line of the private radio frequency f3, and the public base station communication function unit 101 communicates with the public radio frequency f1. It communicates with the public base station 7A via the.

Further, the signal processing unit 99 communicates with the public base station communication function unit 1 for the private-use radio frequency f3 received by the PHS terminal communication function unit 97 without changing the contents.
01 from the public radio frequency f1 to the public radio frequency f1 received by the public base station communication function unit 101 from the PHS terminal communication function unit 97 to the private radio frequency without changing the content. It is processed so as to be transmitted at f3.

Next, an example of the configuration of the PHS terminal 11 shown in FIG. 1 will be described with reference to FIG. The PHS terminal 11 shown in FIG. 3 includes a control unit 111 and a memory 11 via a bus.
3, the wireless relay device number registration memory 115, the communication function unit 117, and the signal processing unit 119 are connected to each other.

The control unit 111 includes a mode changeover switch 1
23 are provided. Furthermore, in the PHS terminal 11,
Power supply 1 such as a battery that supplies power to each block
25, a microphone 127 for inputting voice, an input key 129 for inputting a telephone number and the like, a speaker 131 for outputting voice, and the like.

The control unit 111 controls the operation of each block via the bus. The control unit 111 determines whether or not the input communication is from the wireless relay device 9 registered in the wireless relay device number registration memory 115, in addition to the control related to the normal communication. Furthermore, the control unit 111 changes the PHS terminal 11 to a registration mode described later according to an input from the mode changeover switch 123 and an input unit (for example, an input key 129), or a wireless relay device number in the registration mode. Registration process.

The memory 113 stores, for example, a program for controlling the control section 111.
In addition, the wireless relay device number registration memory 115 stores and registers the wireless relay device number input in the registration mode.

The communication function unit 117 uses the private-use radio frequency f.
Communication with the wireless relay device 9 is performed via the wireless line 3. In addition, the signal processing unit 119 includes the communication function unit 11
The signal processing of the communication of the private radio frequency f3 transmitted / received at 7 is performed.

The mode selector switch 123 switches the operating state of the PHS terminal 11 to the registration mode, as described above. The mode changeover switch 123 may have any configuration as long as it is for switching the operation state.

That is, the mode selector switch 123 is
It may be configured by an independently provided mode switching key, may be configured by assigning a single key among the input keys 129, or may be configured by a combination of a plurality of keys. May be. Further, the mode changeover switch 123 may be changed over by a changeover signal from the wireless relay device 9.

The PHS terminal 11 needs to operate in a self-employed mode in which communication is performed using the self-employed radio frequency f3. The operation of PHS in the self-employed mode is
The operation is different from the operation of the S terminal 13 in the public mode using the public radio frequency f1.

Next, a first embodiment according to the present invention will be described based on the above configuration. In FIG. 1, the public base station 7A may have the same function as the conventional public base station 7C.

The radio relay device 9 also has a communication function with the public base station 7A using the public radio frequency f1 and a communication function with the PHS terminal 11 using the private radio frequency f3. Here, the wireless interface with the public base station using the public radio frequency f1 is a standard (RCR.
It complies with the public standard part of STD-28). On the other hand, the wireless interface with the PHS terminal 11 using the radio frequency f3 for private use is the standard (RCR / STD-2).
It follows the self-employed standard part of 8).

Next, registration of the PHS terminal 11 in the wireless relay device 9 will be described. As described above, the wireless relay device 9 is provided with the PHS terminal number registration memory 95 for registering the PHS terminal number of the PHS terminal 11 belonging to the wireless relay device 9.

To register the PHS terminal 11, the PHS telephone number unique to the PHS terminal 11 and the PS-I of the PHS terminal are registered.
D or the like is used. Moreover, in order to register the PHS terminal 11,
The wireless relay device 9 has a "registration mode" in addition to a mode for making a normal call. Before the registration of the PHS terminal 11 is started, the mode changeover switch 103 is operated to set the wireless relay device 9 in the "registration mode" and the P
The PHS terminal 11 is registered by connecting the HS terminal 11 to the wireless relay device 9 by wire or the like.

Next, a second embodiment in which the PHS terminal 11 is registered without the above-mentioned wired connection will be described. In this case, registration of the PHS terminal 11 is P
This is performed when the position of the HS terminal 11 is registered in the public communication network 1.

Since the PHS supports the incoming call function, it has a location registration database 3 in the public communication network 1 as shown in FIG.

First, a normal position registration sequence will be described with reference to FIG. Location registration is performed by using a certain area (location registration area) as one unit, and normally when the PHS terminal 13 moves from one location registration area to another location registration area, the PHS terminal 13 sends a message to the public communication network 1. And sends a position registration request signal.

The public base station 7C sends the position registration request signal received from the PHS terminal 13 to the public communication network 1, and if it is normally registered in the position registration database 3 in the public communication network 1, A signal indicating the normal registration is returned from the communication network 1 to the public base station 7C.

Next, the sequence in this embodiment will be described with reference to FIG. When registering the PHS terminal 11, the mode switching switch 103 is operated to set the wireless relay device 9 in the registration mode, and similarly, the mode switching switch 123 is operated to set the PHS terminal 11 in the registration mode.

When the PHS terminal 11 is set in the registration mode, the PHS terminal 11 first transmits a position registration request signal. The wireless relay device 9 sends the location registration request signal to the public base station 7
When the position registration normal termination signal from the public communication network 1 is received via the public base station 7, the PHS number or PS-ID of the PHS terminal 11 is transmitted.
Is recorded in the PHS terminal number registration memory 95.

Subsequently, the wireless relay device 9 sends a position registration normal end signal to the PHS terminal 11, and the PHS terminal 11
When the location registration normal end signal is received,
The ID of the wireless relay device 9 is registered in the wireless relay device number registration memory 115 of the S terminal 11.

After the registration is completed, the PHS terminal 11
It is possible to communicate with other PHS terminals 13 and general subscriber telephones 5 only through one or a plurality of wireless relay devices 9 registered in itself. Similarly, the wireless relay device 9
Communicates with only one or a plurality of PHS terminals 11 registered in itself.

Since the wireless relay device 9 is usually fixed and used, the public base station with which the wireless relay device 9 communicates is fixed. Further, between the position registration request signal and the position registration normal end signal, the public communication network 1 outputs the authentication request signal, and the PHS terminal 11 outputs the authentication response signal in response to the authentication request signal. , May exist after the registration process.

Next, a third embodiment of the present invention will be described. In the normal PHS communication mode, when the communication quality between the public base station 7C and the PHS terminal 13 is deteriorated due to the movement of the PHS terminal 13, the public base station 7C to P
A channel switching (handover) instruction signal during communication to another public base station is sent to the HS terminal 13.

P receiving the channel switching instruction signal during communication
The HS terminal 13 searches for a public base station having a high reception level, and connects to the public base station in such a manner that a call is made to the public base station (recall type handover).

On the other hand, the wireless relay device 9 is fixedly installed indoors or the like and does not move, but it may be located between the public base station 7A and the wireless relay device 9 depending on the radio wave propagation condition. Communication quality may deteriorate. In such a case, from the public base station 7A, as in the normal case,
Although the channel switching instruction signal is transmitted during communication, since the wireless relay device 9 constantly selects the public base station 7A having a high reception level for communication, it is not necessary to search for another public base station. . Therefore, it is possible to avoid transmitting and receiving unnecessary signals by ignoring the in-communication channel switching instruction signal from the public base station 7A in this case.

Next, a fourth embodiment of the present invention will be described. In normal PHS communication, public base stations 7C and P
The HS terminal 13 scrambles the information bit (I frame part) and the CRC bit in the communication physical slot transmitted between the public base station 7C and the PHS terminal 13, and the PHS terminal 13 and the public base station. 7C respectively.

Scrambled information bits and C
The RC bit is descrambled in the received PHS terminal 13 and public base station 7C.

Here, the PHS standard (RCR / ST
FIG. 5 shows the structure of the communication physical slot defined in D-28).

In the radio relay device 9 according to the fourth embodiment of the present invention, the scrambled information bits and CR received from the public base station 7A or the PHS terminal 11 are used.
C bit is not descrambled and P is used as it is.
It may be transmitted to the HS terminal 11 or the public base station 7A. That is, the above-described scrambled information bits and CRC bits can be descrambled by the descrambling function originally possessed by the PHS terminal 11 or the public base station 7A.

As a result, the radio relay device 9 does not need the scramble processing function and the descramble processing function. Therefore, by applying the fourth embodiment, simplification of the device configuration can be realized.

In the above embodiment, the case where the public radio frequency band and the private radio frequency band are completely different has been described as an example, but the present invention is not limited to this. , 1900.550 to 1905.
Similarly, it can be appropriately applied to a band for shared communication for private use and outdoor public use such as 950 MHz.

[0052]

According to the present invention, the communication by the public radio frequency with the public base station is converted into the communication by the private radio frequency and transmitted to the radio terminal device via the radio relay device. It converts the communication with the wireless terminal device by the private radio frequency to the communication with the public radio frequency and transmits it to the public base station, so that the usage form desired by the user can be realized and the usage range is expanded. Is possible.

Further, according to the present invention, since at least one of the wireless relay device and the wireless terminal device has a function of registering a corresponding wireless terminal device or wireless relay device, the wireless terminal device and the wireless relay device are registered. It becomes possible to clarify the pendency relationship with.

According to the present invention, the base station communication means for performing communication by the public radio frequency, the terminal communication means for performing the private radio frequency, and the communication by the public radio frequency for the private radio frequency. Since it has the conversion means for converting the communication by the private radio frequency into the communication by the public radio frequency, the usage form desired by the user can be realized and the usage range can be expanded.

Further, according to the present invention, a registration means for registering a wireless terminal device that can use the wireless relay device, and a wireless communication registered through the registration means for communication received via the terminal communication means. Since it has the control means for communicating when it is from the terminal device, it is possible to reliably communicate only with the wireless terminal device corresponding to itself.

Further, according to the present invention, the registration of the wireless terminal device is performed by completing the position registration of the wireless terminal device to the first communication network via the wireless relay device. In addition, it is not necessary to connect the wireless terminal device and the wireless relay device by wire.

Further, according to the present invention, means for ignoring the communication channel switching instruction signal when the communication quality during communication with the public base station is deteriorated is added. It is possible to perform stable communication without being affected by deterioration.

Further, according to the present invention, since the wireless relay device relays without descramble processing, the structure can be simplified.

Further, according to the present invention, registration means for performing registration for identifying a wireless relay device that can be used, communication means for performing communication with the wireless relay device by a private radio frequency, and this communication. Since the communication unit has a control unit that performs communication when the communication received via the means is from the wireless relay device registered by the registration unit, the wireless relay device that surely corresponds to itself is provided. It becomes possible to communicate via the.

As described above, according to the present invention, it is possible to widen the range in which the radio wave from the public base station can reach, and to register the usable terminals by a simple procedure, and further to eliminate unnecessary signals. It is possible to reduce the processing and realize a simple device configuration.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a personal handyphone system (PHS) to which the present invention is applied.

FIG. 2 is a block diagram showing a configuration of a wireless relay device according to the present invention.

FIG. 3 is a block diagram showing a configuration of a PHS terminal according to the present invention.

FIG. 4 shows a location registration sequence according to an embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a communication physical slot.

FIG. 6 is a diagram showing a normal location registration sequence.

[Explanation of symbols]

1 Public Communication Network 3 Location Registration Database 5 General Subscribed Telephone 7 Public Base Station 9 Wireless Relay Device 11, 13 PHS Terminals 91, 111 Control Unit 93, 113 Memory 95 PHS Terminal Number Registration Memory 97 vs. PHS Terminal Communication Function Unit 99, 119 Signal processing unit 101 to public base station communication function unit 103, 123 Mode selection switch 105, 125 Power supply 115 Wireless relay device number registration memory 117 Communication function unit 127 Microphone 129 Input key 131 Speaker

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shiro Takenouchi             1-2-1, Shibaura, Minato-ku, Tokyo             TT Central Personal Communication Network Co., Ltd. F term (reference) 5K067 AA22 BB08 DD17 DD20 DD36                       EE02 EE10 EE16 FF03 HH32                       KK13 KK15

Claims (4)

[Claims] 1. A base station communication means for communicating with a public base station by a public radio frequency, and a terminal communication means for communicating with a radio terminal device by a private radio frequency. Converting the public radio frequency communication from the public base station into the private radio frequency communication, and converting the private radio frequency communication from the wireless terminal device into the public radio frequency communication. A converting means, and means for ignoring a communication channel switching instruction signal to another public base station transmitted from the public base station when the communication quality during communication with the public base station deteriorates. A wireless relay device comprising: 2. A registration means for registering a wireless terminal device capable of using the wireless relay device, and a communication received via the terminal communication means from the wireless terminal device registered by the registration means. The wireless relay device according to claim 1, further comprising a control unit that performs communication at a certain time. 3. The registration means registers the wireless terminal device upon completion of position registration of the wireless terminal device in the first communication network via the wireless relay device. The wireless relay device according to. 4. The information bit and the CRC bit scrambled in each slot when communicating with the public base station or the wireless terminal device are relayed without descramble processing. The wireless relay device according to any one of claims 1 to 3.