JP3250965B2 - PHS mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a PHS (Pers)
In particular, the present invention relates to a PH equipped with a PHS line relay function that enables communication with a PHS public base station indoors where public radio waves are difficult to reach.
S mobile phone.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing the relationship between a conventional PHS mobile phone and a public base station, and the relationship between a PHS mobile phone and a home base unit. As shown in the figure, according to the conventional method, RCRSTD (currently determined by the Association of Radio Industries and Businesses) between the public antenna (1) of the public base station (2) and the antenna (4) of the PHS mobile phone (3) outdoors. Radio signals are transmitted and received in accordance with the public protocol (procedure) of the standard, and in homes where the radio waves of the public base station (2) do not reach, the antenna (7) of the home base unit (8) and the PHS mobile phone (5) RCR between the antenna (6)
Radio signals are transmitted and received according to a self-managed protocol determined by the STD.

In order to perform the above, a telephone number for using the PHS public base station (2) is registered in the PHS public base station (2), and in order to use the NTT line (9), the telephone number is set to NT.
Registered and used on T line (9).

[0004]

In the conventional method shown in FIG. 4, the telephone is connected to the PHS public base station (2) outdoors and is connected to the NTT line (9) indoors. There was a problem that it was complicated to use numbers properly. It is sufficient to use the home base unit (8) as an indoor telephone, but as the personal telephone, it is the telephone number of the PHS mobile telephone (3) that communicates with the PHS public base station (2). There has been a request to transmit and receive radio signals via the public base station (2).

[0005] The present invention has been made in view of the above problems, and eliminates the above-mentioned problems. A PHS mobile telephone for communicating with a PHS public base station is used as a repeater, and a home base unit or a home base unit is used indoors. It is an object of the present invention to provide a PHS line repeater that can be communicated with a PHS public base station by another PHS mobile telephone added to a PHS mobile telephone.

[0006]

As shown in FIG. 1, the present invention provides a PHS public base station (14) connected to an ISDN network (23) or an analog circuit network (24). A PHS mobile telephone (15) having a relay function of transmitting and receiving radio signals between the home base unit (18) and transmitting and receiving radio signals to and from the home base unit (18). Building (2
At a predetermined position of 2), a radio signal is installed at a position where radio signals can be transmitted to and received from the PHS public base station (14), and a radio signal received from the PHS public base station (14) according to a predetermined procedure is transmitted to a building ( 22) in the home base unit (18), and transmitting the radio signal received from the home base unit (18) according to the predetermined procedure to the PHS public base station (14) according to the predetermined procedure. Features.

As shown in FIG. 2, a PHS mobile telephone (15) having a relay function has four slots (# 0, # 1, # 2, # 3) for each frame for transmission and reception.
TDMA / T which repeats each frame for transmission and reception alternately
Transmission and reception are performed by the DD system.
1, # 2 and # 3) are two slots for a control channel and a communication channel with the PHS public base station (14), and the home base unit (1
8) and two slots for a control channel and a communication channel.

[0008] The PH with the PHS line relay function of the present invention
The S mobile phone adopts the above-described configuration to provide a PHS
A PHS mobile telephone (15) having a line relay function can transmit and receive a radio signal of the PHS public base station (14), and is installed at a predetermined position of the building (22) in parallel with the PHS mobile base station (14). ) Is relayed to the home base unit (18) in the building (22) where the radio signal is difficult to reach, so that the home base unit (18) or another PHS mobile telephone (19 ) Is used inside the building (22), just like when it is used outdoors.
It communicates with the HS public base station (14) and is connected to the ISDN network (23).

Further, by configuring the slot of the PHS mobile telephone (15) having the PHS line relay function as in the example shown in FIG. 2, the PHS public base station (14) and the home base station are transmitted by the same transmission / reception frame. The machine (18) is relayed. Therefore, the radio wave efficiency is improved. Further, the circuit configuration can share the means for the PHS public base station (14) and the means for the home parent device (18), and the circuit configuration can be made more efficient.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing the relationship between a PHS mobile telephone having a PHS line relay function of the present invention and a communication line network. As shown in the figure, the PHS mobile telephone (15) having the PHS line relay function of the present invention is installed at one corner of a building (22) to which radio waves of the PHS public base station (14) can reach. A PHS mobile telephone equipped with the PHS line relay function (1.
5) receives the radio wave transmitted by the PHS public base station (14), retransmits it to a place in the building (22) where radio waves are difficult to reach, and the home base unit (18) in the building (22) Receive the outgoing radio waves
It has a relay function to retransmit to the PHS public base station (14).

FIG. 3 is a diagram showing an example of a block configuration of a PHS mobile telephone having a PHS line relay function according to an embodiment of the present invention. As shown in the figure, a PHS mobile telephone (15) having a PHS line relay function has an antenna (16), an RF unit (26),
Modulation section (33), demodulation section (27), TDMA / TDD processing section (2
8), audio processing unit (audio codec) unit (29), speaker (3
0) and a microphone (31).

When a signal arrives from the PHS public base station (14), the signal (encoded signal) from the PHS public base station (14) received by the antenna (16) is transmitted to an RF section (high-frequency amplification section) ( Amplified in 26), demodulated in demodulation unit (27) and TDMA /
The signal passes through the TDD processor (28) and is converted into an audio signal by an audio codec (29). The audio signal is assigned a time slot in the audio path unit (32) (details will be described later), and the audio codec unit
It is encoded again in (29), passes through the TDMA / TDD processing unit (28), is modulated in the modulation unit (33), is amplified in the RF unit (26), and is amplified from the antenna (16) to the PHS home base unit (18). Sent. PH
S adopts the TDMA / TDD scheme in which one frame is divided into four slots as shown in FIG. 2 described later, so that the present invention uses only one antenna and the PHS public base station (14) and the PHS public base station (14).
The device is designed so that transmission and reception can be performed with both the home parent device (18).

When transmitting from the PHS home base unit (18),
The signal (coded signal) from the PHS home master unit (18) received by the antenna (16) is amplified by the RF unit (26) and demodulated.
The signal is demodulated in (27), passes through a TDMA / TDD processing unit (28), and is converted into an audio signal in an audio codec unit (29). The audio signal is assigned a time slot in the audio path unit (32) (to be described in detail later), and is again encoded in the audio codec unit (29).
The signal passes through the DMA / TDD processing unit (28), is modulated by the modulation unit (33), is amplified by the RF unit (26), and is transmitted from the antenna (16) to the PHS public base station (14). The control unit (34) is a voice path unit (32)
And assigns a slot, and outputs a control signal to each unit to perform switching of transmission / reception and other overall control.

FIG. 2 is a diagram showing an example of slot assignment of a mobile telephone (15) having a PHS line relay function according to an embodiment of the present invention. The PHS line relay function has four slots # 0, # 1, # 2, and # 3 determined by the RCR STD, and has a PHS line relay function and a mobile telephone (15).
It is allocated and used for a control channel and a communication channel between the S public base station (14) and between the mobile telephone (15) having the PHS line relay function and the PHS home base unit (18). Slot # 0 is RCR STD and PHS public base station
It is decided to use for the control channel of (14),
Other slots are determined according to the empty state at that time.

In FIG. 1, slot # 1 is allocated to a communication channel with the PHS public base station (14), and the PHS public base station (14) is assigned.
The signal received in # 1 from the slot # in the audio path unit (32)
2 and transmitted to the PHS home base unit (18), and the signal received from the PHS home base unit (18) in slot # 2 is transferred to slot # 1 in the audio path unit (32) and transmitted to the PHS public base station. (14). A slot # 0 is used for a control channel between the mobile telephone (15) having the PHS line relay function and the PHS public base station (14), and the mobile telephone (15) having the PHS line relay function and the PHS home are used. Slot # 3 is used for the control channel between the parent device (18).

As described above, in the embodiment, the PHS home base unit (18) or the PHS
Another PHS mobile telephone (19) added to the home base unit (15)
Can communicate with a PHS public base station (14) via a mobile telephone (18) having a PHS line relay function. Further, in the embodiment, there are many portions that switch between transmission and reception with the PHS home base unit (18) and the PHS public base station (14) and are shared, thereby facilitating miniaturization and power saving. Note that the public protocol determined by the RCR STD can be used technically between the mobile telephone (15) having the PHS line relay function and the PHS home base unit (18). This eliminates the need to switch to a proprietary protocol with a mobile telephone (15) having a PHS line relay function. However, the current RCR STD stipulates that a self-managed protocol is used between the PHS mobile device and the PHS home parent device (18).

[0017]

As described above, according to the present invention, P
A mobile telephone (15) having an HS line relay function can transmit and receive radio signals to and from a PHS public base station (14), and is installed at a predetermined position in a building, and an indoor PHS home that is difficult to reach with the PHS public base station. Relays to another PHS mobile telephone (19) added to the PHS home base (18) or the PHS home base (18), so that the PHS home base or the PHS home base
The other PHS mobile telephone (19) added to (18) can communicate with the PHS public base station (14) and connect to the ISDN network even indoors where radio waves of the PHS public base station (14) are difficult to reach.

[Brief description of the drawings]

FIG. 1 is a diagram showing a relationship between a PHS mobile telephone having a PHS line relay function of the present invention and a communication line network.

FIG. 2 is a diagram showing an example of slot allocation according to the embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of a block configuration of a PHS mobile telephone having a PHS line relay function according to an embodiment of the present invention.

FIG. 4 is a diagram showing the relationship between a conventional PHS mobile telephone and a communication network.

[Explanation of symbols]

1: PHS public base station antenna 2: PHS public base station 3: PHS mobile phone 4: PHS mobile phone antenna 5: PHS mobile phone 6: PHS mobile phone antenna 7: PHS home base antenna 8: PHS home base 9: NTT line 10: Building 11: ISDN network 12: Analog line network 13: PHS public base station antenna 14: PHS public base station 15: PHS mobile phone with PHS line relay function 16: With PHS line relay function PHS Mobile Phone Antenna 17: PHS Home Base Unit Antenna 18: PHS Home Base Unit 19: PHS Mobile Phone 20: PHS Mobile Phone Antenna 21: NTT Line 22: Building 23: ISDN Network 24: Analog Network 26: RF Unit 27: Demodulation unit 28: TDMA / TDD processing unit 29: Audio codec 30: Speaker 31: Microphone (microphone) 32: Audio path unit 33: Modulation unit 34: Control unit 35: Keyboard C 36: Display

Claims (1)

(57) [Claims] 1. A PHS having a radio transmitting / receiving section for transmitting / receiving a radio signal to / from a PHS public base station connected to an analog circuit network or an ISDN network to enable transmission / reception and communication.
In the mobile telephone, automatic or manual switching means is provided, and when a call is received from the PHS public base station, a radio signal received from the PHS base station according to a predetermined public procedure is transmitted to a PHS home parent according to a predetermined private procedure. When transmitting to the PHS public base station in accordance with the predetermined procedure for the public, the radio signal received from the PHS home base unit in accordance with the predetermined procedure for private use, and transmitted by the PHS home base station, A radio signal received from the PHS home base unit in accordance with the predetermined procedure for private use is transmitted to the PHS public base station according to the predetermined procedure for public use, and a radio signal received from the PHS public base station in accordance with the predetermined procedure for public use. Is transmitted to the PHS home base station in accordance with the predetermined procedure for private use. All four slots constituting each frame of the transmission / reception of the DD system are used, and four slots of each frame of the transmission / reception are allocated to two slots for control with the PHS public base station and two slots for communication, and further, control with the PHS home base unit. A PHS mobile telephone characterized in that the PHS mobile telephone is allocated to two slots for communication and for communication using the wireless transmission / reception unit.