JP2002232951A - Phs system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a PHS system where a PHS slave unit to which one PS-ID is assigned attains communications. SOLUTION: Upon the receipt of a channel assignment request from a slave unit by a radio control circuit 28 of a master unit, a CPU 22 uses an ISDN line I/F 27 and the radio control circuit 28 to confirm an idle state of ISDN lines and an idle state of radio channels. When the idle state indicates a communication available state, the master unit informs the slave unit about the available assignment of the radio channel, sets up a communication path on the basis of the RCR STD-28 after that and transits to a communication state. In this case, the CPU 22 writes management information required to control the entire sections to a RAM 23 as a use resource management table on the basis of a communication slot. When the slave unit makes a transmission request in this state, the CPU 22 references the use resource management table of the RAM 23, uses an idle slot when the idle slot exists and controls each circuit to set up another communication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a PHS system, and more particularly to communication of a general home PHS system.

[0002]

2. Description of the Related Art Conventional PHS systems generally include:
The mobile terminal is composed of a mobile terminal (PS) which is a mobile terminal and a base unit (or base station) connected to an analog telephone network or an ISDN network.
B: Association of Radio Industries and Businesse
s) It is connected by an air interface conforming to RCR STD-28 which is a PHS standard.

A conventional PHS system includes a public PH.
There are S system and home PHS system.
The master unit (CS) of the S system is an analog telephone network or I
An interface connected to the SDN line, and an RCR ST
A radio control function conforming to D-28, a conversion function for mutually converting a signal from a PS registered in the master unit and a signal of a line network to be connected, a transmission from the PS registered in itself, and a network And a function of notifying the PS of an incoming call from the PS to perform a telephone call or data communication.

On the other hand, a slave unit of a conventional home PHS system is a portable telephone or a personal computer (PC).
It can also be used as an adapter type terminal for connecting and communicating with a PCMCIA card type data communication terminal.

FIG. 3 is a block diagram showing the configuration of a PHS system when a slave unit of a conventional home PHS system is used as an adapter type terminal. Base unit 2 is ISDN
It is connected to a line and has a function of relaying an outgoing operation from the handset 1 and an incoming operation from the ISDN switching network to connect to the other party. In FIG. A call or a call operation at an incoming call corresponds to this. Such a function is realized as a wireless TA in which a PHS wireless function is mounted on a terminal adapter (TA) for an ISDN line.

[0006]

SUMMARY OF THE INVENTION The above-mentioned conventional PHS
The system has the following problems. The first problem is that the parent device of the conventional PHS system manages the child devices registered based on the PS-ID, which is the identifier of the child device.
This means that another communication in the S-ID is excluded as impossible. The reason is that the slave unit in the public PHS system is a mobile terminal, and the base station corresponding to the master unit of the home PHS system performs roaming and channel management based on the PS-ID of the slave unit. -I
This is because another communication in D cannot be managed, and the parent device in the home PHS system that does not require roaming or the like also follows such a management method.

A second problem is that even a handset having an interface for connecting a plurality of telephones or PCs as shown in FIG. 3 cannot perform a plurality of communications by using them simultaneously. It is. The reason is that the public P
Since the HS system manages the slave unit using the PS-ID,
This is because a restriction is made so that a plurality of communication requests are not simultaneously generated on the slave unit side.

The present invention has been made in view of the above problems, and the present invention is directed to a personal handyphone system (PHS) having a plurality of data terminal interfaces (USB, RS232C, etc.) and telephone interfaces.
In a PHS system having a handset terminal device as a handset,
It is an object of the present invention to provide a PHS system capable of simultaneously performing a plurality of communications such as a voice call and a data communication or a plurality of data communications.

[0009]

SUMMARY OF THE INVENTION The present invention is a PHS system, comprising: a handset to which one PS-ID is assigned;
In a PHS system including a master unit connected to a wired communication network and communicating with the slave unit in a TDMA system, the master unit allocates and manages a TDMA slot for each communication occurring with the slave unit. It is characterized by the following.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. Note that the system configuration of the present embodiment is the same as the conventional PHS system shown in FIG. 3, and thus a detailed description thereof will be omitted.

FIG. 1 is a block diagram showing the internal configuration of a slave unit in the PHS system of the present embodiment. As shown in FIG. 1, the slave unit of the present embodiment includes a ROM 11 storing various programs, a CPU 12 executing the programs stored in the ROM 11 and controlling the entire slave unit, a state of the apparatus and an operation state of the program, RAM1 for temporarily storing
3 and an interface unit PCI / F14 for a personal computer based on standards such as USB and RS232C
A telephone I / F 15 having a circuit configuration for realizing a general telephone connection function such as a function of detecting dial information from a telephone, a function of ringing the telephone, and a function of detecting a state of a handset of the telephone; I / F1
5, a function of converting ADPCM data to ADPCM data, a function of converting ADPCM data to audio data, a TDMA slot for transmitting and receiving data from the telephone I / F 15 and the PCI I / F 14 to the wireless control circuit 17 by radio. A data transfer control circuit 16 having a function of transmitting and receiving data in units of PHS standards (RCR STD-2
And a wireless control circuit 17 having a function of transmitting and receiving a wireless signal based on 8).

FIG. 2 is a block diagram showing the internal configuration of the master unit in the PHS system of the present embodiment. As shown in FIG. 2, the master unit according to the present embodiment includes a ROM 21 storing various programs, a CPU 22 executing the programs stored in the ROM 21 and controlling the entire master unit, a device state, an operation state of the program, and the like. RAM2 for temporarily storing
3 and an interface unit PCI / F24 for a personal computer based on standards such as USB and RS232C
A telephone I / F 25 having a circuit configuration for realizing a function of connecting a general telephone, such as a function of detecting dial information from the telephone, a function of ringing the telephone, and a function of detecting a state of a handset of the telephone; Function to convert audio data from / F25 to PCM data, PCM
Function to convert data to audio data, PCM data and A
Function to convert DPCM data mutually, telephone I / F2
5, a data control circuit 26 having a function of transmitting and receiving data from the PCI / F 24 and the ISDN line I / F 27 to the wireless control circuit 28 in units of TDMA slots for wirelessly transmitting and receiving data, and an ISDN public network. And a wireless control circuit 28 having a function of transmitting and receiving wireless signals based on the PHS standard.

As a communication management method for a base unit according to the present embodiment, a method is conventionally used in which management is performed by using an identifier (PS-ID) of the base unit and control is made so as to exclude outgoing / incoming calls of the same base unit. , The communication slot is mainly managed, and a function of controlling the entire PS-ID in communication slot units is added. More specifically, a table of used resources for each communication slot is prepared as management information on the RAM 23, and the CPU 22 adds a function of controlling each control circuit based on this information.

Next, the operation of this embodiment will be described in detail with reference to the drawings. First, the operation of the slave unit will be described with reference to FIGS. The slave 1 detects the dial signal from the telephone 3 by the telephone I / F 15, and
RCR STD, which is a PHS standard by controlling
It requests the parent device 2 to allocate a communication channel according to -28.

Thereafter, the CPU 12 executes the RCR STD-2
When the call with the other party is established by the control according to the procedure of step 8,
A voice communication path is established through the telephone I / F 15, the data transfer control circuit 16, and the wireless control circuit 17, and the telephone 3 is placed in a communication state with the other party.

In this state, PC4 is passed through PCI / F14.
CPU 12 receives a connection request (generally, a request conforming to the AT command) from the RCR ST
Under the control in accordance with the procedure of D-28, similarly to the communication from the telephone 3, the base station 2 is requested to allocate a communication channel. At this time, since communication with the telephone 3 has already been established, another communication channel (communication slot) is allocated.

Thereafter, the RCR STD-28 of the CPU 12
When a call with the communication partner is established by the control according to the procedure described above, a data communication path is established through the PCI / F 14, the data transfer control circuit 16, and the wireless control circuit 17, and the data communication state with the other party is established. In a state where these two communications are established, the data transfer control circuit 16 determines the respective data of the telephone I / F 15 and the PCI / F 14 under the control of the CPU 12 at the time of connection with the master unit (at the time of channel assignment). Control to transmit / receive to / from the communication slot. At this time, the CPU 12 manages the internal operation for each communication slot, and controls the entire apparatus based on the internal operation.

Next, the operation of the master unit will be described with reference to FIGS. When the wireless control circuit 28 receives the channel assignment request from the slave 1, the master 2
Uses the ISDN line I / F 27 and the wireless control circuit 28 to check the availability of the ISDN line and the availability of the wireless channel. Then, the master unit 2 notifies the slave unit 1 of a possible wireless channel assignment if communication is possible.
Each circuit is controlled based on CR STD-28 to control voice,
Alternatively, a data communication path is established, and the state transits to the communication state.

At this time, PS-ID,
Radio channel used, data or voice classification, ISDN
Management information necessary for controlling the whole, such as the channel used by the line, is written into the RAM 23 as a used resource management table based on the communication slot.

In this state, if there is a transmission request from the slave 1, the CPU 22 refers to the resource management table in the RAM 23, and if there is an empty slot, uses that slot and controls each circuit. Establish another communication.

These operations are performed in a closed communication only between the base unit 2 and the slave unit 1, for example, a telephone connected to the telephone I / F 24 of the base unit 2 and a telephone connected to the telephone I / F 15 of the slave unit 1. Communication between the main unit 2, the PCI / F 24 and the sub unit 1
In the case of two simultaneous operations of data communication between PCs respectively connected to the I / F 14, the same control can be realized.

[0022]

As described above, according to the present invention, the PH
By managing the communication occurring in the S slave unit on a TDMA slot basis, the PH assigned one PS-ID is managed.
A plurality of communications can be simultaneously established by the S slave.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a PHS slave according to the present invention.

FIG. 2 is a block diagram showing a configuration of a PHS master according to the present invention.

FIG. 3 is a block diagram illustrating an example of a conventional PHS system.

[Explanation of symbols]

 Reference Signs List 1 slave unit (PS) 2 base unit (CS) 3 telephone 4 personal computer (PC) 11, 21 ROM 12, 22 CPU 13, 23 RAM 14, 24 PCI / F 15, 25 telephone I / F 16 data transfer control circuit 17, 28 wireless control circuit 26 data control circuit 27 ISDN line I / F

Claims (3)

[Claims] 1. A PHS system comprising: a slave unit to which one PS-ID is assigned; and a master unit connected to a wired communication network and communicating with the slave unit by a TDMA method. A PHS system wherein a TDMA slot is allocated and managed for each communication occurring with a slave unit. 2. The communication device according to claim 1, wherein the slave unit has a plurality of communication interfaces for connecting communication terminals, and performs communication simultaneously by independently allocating communication generated in the plurality of communication interfaces to TDMA slots. Claim 1
The PHS system as described. 3. The communication device according to claim 1, wherein the master unit converts the data into a data format suitable for the plurality of communication interfaces connecting the communication terminals and transfers the data to a communication interface of a communication partner. A data control unit, and independently performs a plurality of communications occurring between the slave unit or a communication terminal connected to the communication interface of the slave unit and a communication terminal connected to the communication interface of the master unit. 3. The PHS system according to claim 2, wherein the PHS system performs communication simultaneously by assigning to a TDMA slot.