JP3288340B2 - Automatic information transfer system and transfer method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic information transfer system and a transfer method therefor, and more particularly to a PHS (Person).
The present invention relates to an automatic information transfer system used for an al Handy phone System) system and a transfer method thereof.

[0002]

2. Description of the Related Art In conventional time division multiplex communication, particularly in a PHS system, a PS (Personal Status) is used.
When the terminal (n: terminal) obtains the service information using the voice line, the PS connects to the center (the server (server) storing the service information) and obtains the service information.

[0003]

As described above, since the PS connects to the center and obtains service information, there is a disadvantage that it is difficult to obtain service information for each service area. Also, service information could not be obtained using an empty time slot.

On the other hand, a technology relating to broadcast information is disclosed in
Japanese Patent Application Laid-Open No. 98126 (hereinafter referred to as Document 1)
Japanese Patent Application Laid-Open No. H04-298767 (hereinafter referred to as Document 2) discloses a technique for utilizing an empty time slot.
No. 3,435,537 (hereinafter, referred to as Reference 3), Japanese Patent Application Laid-Open No. 10-20956 (hereinafter, referred to as Reference 4), and Japanese Patent No. 2,531,380 (hereinafter, referred to as Reference 5). The technology disclosed in Document 1 enables a call between a data sender and a third party by transmitting a received signal to another wireless device on another channel in a slot used for reception or another channel after an arbitrary slot. That is. The technology disclosed in Document 2 includes a plurality of wireless base stations, a main device, and a plurality of wireless terminals having both types of communication functions of a two-way communication function and a broadcast communication function. In this case, the communication is performed in a time-division manner, so that one terminal can use both functions using the same frequency.

The technique disclosed in Document 3 modulates the frequency of a telephone signal by using one time slot of one radio channel allocated between a mobile radio and a radio base station,
By modulating the amplitude of the modulated signal with a fax signal and transmitting / receiving the same, a telephone signal and a fax signal can be transmitted / received using the same wireless carrier. The technique disclosed in Reference 4 receives empty slot information transmitted in a downlink channel slot at the time of generation of a transmission packet, randomly selects a slot from accessible uplink slots, and performs random access in this slot. That is, it is possible to prevent concentration of the uplink access load on a specific slot. The technology disclosed in Document 5 makes it possible to effectively utilize empty time slots by making transmission and reception duty ratios arbitrarily variable. However, these documents 1 to 5 do not disclose means for solving the above-mentioned problem.

An object of the present invention is to provide an automatic information transfer system and a transfer method capable of transferring service information for each service area to a terminal (PS) using an empty time slot.

[0007]

In order to solve the above problems, an automatic information transfer system according to the present invention comprises a center having service information, an exchange for performing circuit switching, a base station connected to the exchange, A first transfer unit that is used in a time division multiplex communication system including a terminal connected to a base station and transfers service information possessed by the center to the base station via the exchange; and provided in the base station. automatic information transfer system and a second transferring means for transferring the further the terminal service information transferred to the base station
A is, the second transfer means the said service information
The control signal that triggers the transfer to the terminal
In one of the multiple control signals that make up the frame
The terminal has not yet obtained the service information.
The control as the trigger from the second transfer means.
A channel reservation request signal is returned for a signal.
I do.

In another aspect of the automatic information transfer method according to the present invention, a center having service information, an exchange for performing circuit switching, a base station connected to the exchange, and the base station are connected. A first step of transferring service information possessed by the center to the base station via the exchange, using the time division multiplex communication system including a terminal, and transmitting the service information provided to the base station to the base station. an automatic information transfer method and a second step of transferring the service information further to the terminal, the second step before
Trigger to transfer the service information to the terminal.
Control signals that constitute a superframe
Are included in one of said terminal the service information
If you have not yet obtained the information,
A channel reservation request signal for the trigger control signal.
A third step of returning the number.

According to the present invention and another invention according to the present invention, it is possible to transfer service information from a base station to a terminal. Therefore, if a base station is provided in each of a plurality of areas, it becomes possible to transfer service information for each area to a terminal under its control. Further, it is possible to transfer service information using an empty time slot.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outline of the present invention will be described. According to the present invention, NMS
(Network Management System
m: Remote maintenance terminal of PHS system) -CS (Cell
A service can be provided simply and easily by providing a function of storing service information in each CS by using a download function between the stations (base stations), and different data for each area is stored in the CS. Can provide different information for each area. That is,
Area-specific information (map information, advertisements, etc.) can be automatically transferred to the terminal. Also, using the traffic monitoring function of CS, it recognizes the line currently used among the three lines,
By providing the CS with a function of inserting service information (position information, value-added service information, etc.) previously stored in the CS from the center (NMS) into unused channels not used in three slots, the unused channels can be used. Effective use of service can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, the first embodiment will be described. The first embodiment relates to an automatic information transfer system. FIG. 1 is a configuration diagram of an automatic information transfer system according to the present invention. The present invention relates to TDMA (Time
Division Multiple Accesses
s) and TDD (Time Division Dup)
lex) type wireless transmission / reception system. In this embodiment, a PHS system will be described as an example of the wireless transmission / reception system.

Referring to FIG. 1, an automatic information transfer system includes an NMS 1, an exchange 2, and a CS provided in area A.
3, CS4 and 5 provided in area B, CS6 and 7 provided in area C, CS8 not belonging to any area, and PS11 and 12 provided in area A. It consists of. The illustration of the areas B and C and the PS existing outside the area is omitted. Also, the number of PSs in the area A is not limited to these two, and the number is arbitrary.

The PSs 11 and 12 are connected to the CS within the same area A.
The communication is controlled in 2. Each of the CSs 3 to 8 communicates with the exchange 2 to connect each PS to a communication line (not shown). The NMS 1 has service information for each location registration area,
That is, service information called data A for area A, service information called data B for area B, and area C
, And service information called data D for outside the area. The exchange 2 has a function of downloading the service information (data A to D) held by the NMS 1 to the CS in each area.

That is, the exchange 2 sends data A to CS3 in area A, data B to CS4 and CS5 in area B, data C to CS6 and CS7 in area C, and data D to CS8 outside area. Download each one.

Next, a superframe used between the CS and the PS will be briefly described. FIG. 8 is a configuration diagram of a conventional superframe. In the figure, the horizontal axis indicates time. In the figure, the upper part (a) shows the arrangement of time slots, and the lower part (b) shows a collection of only control time slots. Referring to FIG.
The first frame 121 is composed of four downlink slots 111 to 11
4, a total of eight slots of four uplink slots (not shown), and the first slot (slot 111 in the case of a downlink slot) is a control slot used for control between CS and PS. The remaining three slots are communication slots (slots 112 to 114 in the case of downlink slots). These slots 112 to 114 are allocated to a desired PS in a time-division manner.

The length of the first frame 121 is, for example, 5
ms. 20 first frames 121 are collected and 1
A second frame 122 of 00 ms is formed (see FIG. 3B). Then, the second frame 122 is
A single superframe of 1.2 seconds is collected.
Here, the control slot 111 at the head of the second frame 122 actually constitutes the super frame. The twelve control slots 111 form a super frame.

Next, each of the twelve control slots 111 will be described. The first control slot 111 is B
CCH (A). BCCH (A) is a broadcast channel (Broadcast Control Channel).
1), which is transmitted from the CS to the PS and transmitted in the first time slot of the control time slot group (superframe). This signal includes PS
Contains an identification code for identifying CS, a transmission cycle of a control signal, a type of information, a transmission order, and the like.

Following the BCCH (A) are PCHs 1 and 2. PCH is a paging channel (Passing Cha).
nnel), which is sent from the CS to the PS. If there is an incoming call to the PS, all Cs in the service zone
This is a call signal transmitted from S to PS. This signal carries the number of the called PS and information necessary for calling.

After PCH2 is SCCH. SCCH
Is an individual cell channel (Signaling Con
(Control Channel), which is a signal for performing bidirectional communication between CS and PS. This signal carries signals necessary for connection between the CS and the PS, such as a protocol for making a call, vacant resource allocation information, and a connection rejection reason.

Following this SCCH, PCHs 3 and 4, SC
CH, PCH5 and 6, SCCH, PCH7 and 8 follow. The contents of the SCCH and PCH are the same as those described above, and a description thereof will be omitted.

Next, the PCH and SCCH will be supplemented. When a call is generated and the corresponding PS exists under the CS, the PS responds to the PCH to the CS. After that, the CS informs the PS which communication time slot is to be allocated by the SCCH, and the connection between the PS and the CS is completed. In other words, when a call is made to a certain PS, the CS broadcasts by PCH (similar to BCCH) whether there is a corresponding PS under its control and calls it. One super frame (1.2 seconds)
The reason why there are eight PCHs is that the PS can be immediately called when a call is generated.

Next, the superframe of the present invention will be described. FIG. 2 is a configuration diagram of a superframe according to the present invention. Referring to FIG. 2, the superframe according to the present invention is different from the conventional superframe in that a BCCH (B) is newly inserted at PCH2 of the conventional superframe (see FIG. 7). . Therefore, the PCH3 is replaced by the PCH2,
PCH3 at CH4, PCH4 at conventional PCH5, and PCH3 at conventional PCH6.
5, PCH6 is inserted at the conventional PCH7, and PCH7 is inserted at the conventional PCH8.
However, the position of the SCCH does not change.

The BCCH (B) is similar to the BCCH (A) in the sense of a broadcast channel, but is used as a trigger for transmitting service information. The BCCH (B) carries at least a data famous and checksum 21 and a control signal 22. This BCCH (B) will be described in an operation description described later.

Next, an outline of signal exchange between CS and PS will be described. FIG. 3 shows CS and P according to the present invention.
It is a schematic diagram which shows the outline of the exchange of the signal between S. First, a data transfer time signal BCCH (B) is simultaneously transmitted from the CS 31 to the subordinate PSs 32 to 35. At this time, for example, as shown in Case 1, if no service information is stored in the PS 32 (when the power is turned on or when the PS 32 is moved to a different area), the PS 32 returns an SCCH to the CS 31. Upon receiving this, the CS 31 allocates an empty time slot to the PS 32 and transfers service information to the PS 32 in that time slot. On the other hand, as shown in Case 2, a PS that has already accumulated service information has
35 ignores the BCCH (B) even if it receives it,
Do not return the SCCH. Thereby, the load on CS and PS can be reduced.

Next, the configuration of the CS will be described. FIG.
FIG. 2 is a configuration diagram of an example of a CS according to the present invention. Referring to FIG. 4, CS is a transmitting antenna 41 and a receiving antenna 42.
, A high frequency unit 43, a demodulation unit 44, a modulation unit 45, a quality monitoring unit 46, a TDMA / TDD processing and data storage memory control unit 47, and a data storage memory 4
8, an ADPCM 49 and a digital network I / F 50.

The high frequency unit 43 performs power amplification of the transmission signal and high frequency amplification of the reception signal. The demodulation unit 44 demodulates the received signal. The modulator 45 modulates a transmission signal. The quality monitoring unit 46 monitors the reception level of the radio wave to be received, the radio interference level of CS and PS, and its own transmission output, and performs handover switching (a function of switching a link to a CS having a higher reception level) when the reception level is reduced. Activate and activate channel switching if the radio interference level increases. This maintains a constant call quality. TDMA / TDD
The processing and data storage memory control unit 47 is TD
The MA / TDD process and the data storage memory 48 are controlled. The data storage memory 48 stores the service information transferred from the MMS 1. ADPCM (Adapt
The active differential PCM (applied differential PCM) 49 is, for example, a 64 Kbps P in the exchange 2.
32K audio signal converted to CM signal (A / D conversion)
Code conversion to bps signal (at the time of transmission). This is PH
In S, 64Kbp audio is transmitted through the air interface
This is because there is no capacity for skipping in s. At the time of reception, a signal of 32 Kbps is code-converted into a signal of 64 Kbps. Digital network I / F50 is for digital network and ADPC
This is an interface provided between M49.

The TDMA / TDD processing and data storage memory control unit 47 always uses the traffic function of the CS to constantly monitor time slot resources and detect an empty time slot. further,
It has a function of controlling data transfer to the PS and a function of inserting service information stored in the data storage memory 48 into an empty time slot.

Next, the configuration of the PS will be described. FIG.
FIG. 1 is a configuration diagram of an example of a PS according to the present invention. The configuration of PS11 and PS12 is the same. Referring to FIG. 5, PS is a transmitting / receiving antenna 51, a high frequency unit 52, a demodulation unit 53,
Modulation section 54, quality monitoring section 55, TDMA / TDD processing and data storage memory control section 56, data storage memory 57, ADPCM 58, speaker 5
9 and a microphone 60.

Like the CS, the PS also has a data storage memory 48 for storing service information. Also, TDMA
/ TDD processing and data storage memory control unit 5
Reference numeral 6 has a checksum function and a parity check function for checking the contents of the data storage memory 57 after receiving data from the CS, and by determining whether the contents of the data storage memory 57 are valid / invalid. Prevent the effects of runaway. The speaker 59 reproduces the received voice, and the microphone 60 converts the voice into an electric signal.
The operation of the other components is the same as CS.

As described above, according to the present invention, a value-added service (providing service information) using an available time slot can be realized, and the processing is only between the CS and the PS. The structure is such that no load is applied.

Next, a second embodiment will be described. The second embodiment relates to an automatic information transfer method. FIG. 6 is a flowchart showing signal processing between the center and the CS. Referring to FIG. 6, the center has service information for each area in advance, and the service information is transferred to each CS via NMS 1 and exchange 2 (S21).

FIG. 7 is a signal processing sequence diagram between the PS and the CS. Referring to FIG. 7, CS constantly monitors the traffic state and detects an empty time slot (S1).
Next, when three lines are in use (Y in S2), S1
And do not run this process until the channel is free. If any channel is free (N at S2
), The data unique name and the necessary control signal
On (B), a time is reported to the PS under the location registration area (S3 and S4). The PS that has received BCCH (B)
Whether the same data has already been acquired or not, the data unique name is compared with its own data name (S5). If the same data has already been acquired (Y in S5), this process ends and the process waits. If the data names are different as a result of the comparison (N in S5), a request to secure a channel on the SCCH is sent to CS (S6). CS
Allocates an empty channel and a time slot to the PS by receiving the SCCH from the PS, and sends the result to the PS (S7). The PS sends a data transfer request on the assigned channel to the FACCH (Fast Ass
The signal is transmitted to the CS through an “Occurred Control Channel” (high-speed associated control channel) (S8). C
S reads data from the memory 48, stores the data in a transmission buffer (not shown), and starts preparing for transfer (S9). In the meantime, the secret key is set and authenticated, and it is determined whether the PS is improper (S10 and S11). Next, a data transfer start signal is transmitted from the CS to the PS on the FACCH (S12).
Next, the PS prepares to accept data and transfers a completion notification to the CS (S13). Next, from CS to TCH (T
traffic Channel: 3
Data is transferred to the PS at 2 kbps (S14), and when the transfer is completed, a data transfer completion notification is sent (S15).
Next, the PS determines whether the data has been completely acquired,
(S16). Next, P
S compares the checksum obtained by the BCCH (B) with the checksum of the data (S17), and when they match, uses the data as valid. If they do not match, they will not be used as invalid data. Next, the radio channel disconnection signal (FACCH) is transmitted from the CS (S18), the PS transmits a disconnection completion signal (FACCH) (S19), and the process ends.

[0033]

According to the present invention, time division multiplex communication including a center having service information, an exchange for performing circuit switching, a base station connected to the exchange, and a terminal connected to the base station. An automatic information transfer system used in a system, wherein the transfer system transfers first service information provided by the center to the base station via the exchange, and the base station provided in the base station. And a second transfer unit for transferring the service information transferred to the terminal to the terminal, so that the service information can be transferred from the base station to the terminal. Therefore, if a base station is provided in each of a plurality of areas, it becomes possible to transfer service information for each area to a terminal under its control. Further, it is possible to transfer service information using an empty time slot.

Another invention according to the present invention is a time division system including a center having service information, an exchange for performing circuit switching, a base station connected to the exchange, and a terminal connected to the base station. An automatic information transfer method for use in a multiplex communication system, the method comprising: a first step of transferring service information of the center to the base station via the exchange; and the base station provided in the base station. And a second step of further transferring the service information transferred to the terminal to the terminal.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an automatic information transfer system according to the present invention.

FIG. 2 is a configuration diagram of a superframe according to the present invention.

FIG. 3 is a schematic diagram showing an outline of signal exchange between a CS and a PS according to the present invention.

FIG. 4 is a configuration diagram of an example of a CS according to the present invention.

FIG. 5 is a configuration diagram of an example of a PS according to the present invention.

FIG. 6 is a flowchart showing signal processing between a center and a CS.

FIG. 7 is a signal processing sequence diagram between PS and CS.

FIG. 8 is a configuration diagram of a conventional superframe.

[Explanation of symbols]

 1 NMS 2 exchange 3-8 CS 11,12 PS 31 CS 32-35 PS

Continued on the front page (51) Int.Cl. ⁷ Identification code FI H04Q 7/36 H04L 11/20 103A

Claims (12)

(57) [Claims] 1. A center having service information, an exchange for performing circuit switching, a base station connected to the exchange,
A first transfer unit that is used in a time division multiplex communication system including a terminal connected to the base station and transfers service information held by the center to the base station via the exchange; And a second transfer means for further transferring the service information transferred to the base station to the terminal , wherein the second transfer means transfers the service information to the terminal.
The control signal that triggers the
The terminal has not yet acquired the service information.
The control signal as the trigger from the second transfer means.
Return a channel reservation request signal to
Automatic information transfer system. 2. A communication center with service information and a center
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first transfer means for transferring to the base station via the exchange;
And a stage provided in the base station and transferred to the base station.
Second transfer means for further transferring service information to the terminal;
An automatic information transfer system including, the second transfer means free of a plurality of time slots
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
The terminal has not yet obtained the service information.
The control signal as the trigger from the second transfer means.
Return a channel reservation request signal to
Automatic information transfer system. 3. A communication center with a center having service information.
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first transfer means for transferring to the base station via the exchange;
And a stage provided in the base station and transferred to the base station.
Second transfer means for further transferring service information to the terminal;
An automatic information transfer system including, the second transfer means free of a plurality of time slots
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
The base station is provided in one of a plurality of areas, and the base station is provided in each of a plurality of areas.
The service information transferred to the
If the terminal has not yet acquired the service information,
The control signal as the trigger from the second transfer means.
Return a channel reservation request signal to
Automatic information transfer system. 4. A communication center with a center having service information.
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first transfer means for transferring to the base station via the exchange;
And a stage provided in the base station and transferred to the base station.
Second transfer means for further transferring service information to the terminal;
An automatic information transfer system including, the second transfer means transfers the service information to the terminal
The control signal that triggers the
Included in one of a plurality of control signals to be formed, and the terminal has already obtained the service information,
In response to the control signal serving as the trigger from the second transfer means.
Automatic information transfer system
M 5. A communication center with a center having service information.
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first transfer means for transferring to the base station via the exchange;
And a stage provided in the base station and transferred to the base station.
Second transfer means for further transferring service information to the terminal;
An automatic information transfer system including, the second transfer means free of a plurality of time slots
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
If the terminal has already obtained the service information,
In response to the control signal serving as the trigger from the second transfer means.
Automatic information transfer system
M 6. A line exchange with a center having service information.
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first transfer means for transferring to the base station via the exchange;
And a stage provided in the base station and transferred to the base station.
Second transfer means for further transferring service information to the terminal;
An automatic information transfer system including, the second transfer means free of a plurality of time slots
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
The base station is provided in one of a plurality of areas, and the base station is provided in each of a plurality of areas.
The service information transferred to the
If the terminal has already obtained the service information,
In response to the control signal serving as the trigger from the second transfer means.
Automatic information transfer system
M 7. A center having service information, an exchange for performing circuit switching, a base station connected to the exchange,
A first step of using the time division multiplexing communication system including the terminal connected to the base station and transferring service information of the center to the base station via the exchange, provided in the base station; A second step of further transferring the service information transferred to the base station to the terminal , wherein the second step transfers the service information to the terminal.
The control signal that triggers the
The terminal has not yet acquired the service information.
The control signal from the second step as the trigger
A third step of returning a channel reservation request signal to the
Automatic information transfer method characterized in that: 8. A communication line between a center having service information and a line
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first step of forwarding to the base station via the exchange.
And a service provided in the base station and transferred to the base station.
A second step of further transferring service information to said terminal;
An automatic information transfer method comprising the second step is free of a plurality of time slots
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
The terminal has not yet obtained the service information.
The control signal from the second step as the trigger
A third step of returning a channel reservation request signal to the
Automatic information transfer method characterized in that: 9. A communication center with a center having service information.
An exchange for switching, a base station connected to the exchange,
A time-division multiplexing communication system including terminals connected to this base station.
Service information that the center has
A first step of forwarding to the base station via the exchange.
And a service provided in the base station and transferred to the base station.
A second step of further transferring service information to said terminal;
An automatic information transfer method comprising the second step is free of a plurality of time slots
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
The base station is provided in one of a plurality of areas, and the base station is provided in each of a plurality of areas.
The service information transferred to the
If the terminal has not yet acquired the service information,
The control signal from the second step as the trigger
A third step of returning a channel reservation request signal to the
Automatic information transfer method characterized in that: 10. A center having service information and a line
Exchange to be exchanged and base station connected to this exchange
And time-division multiplexing including terminals connected to this base station.
Service information used by the communication system
A first switch for transferring a notification to the base station via the exchange.
Step, provided in the base station and transferred to the base station
A second step of further transferring the service information to the terminal.
And transmitting the service information to the terminal.
The control signal that triggers the
Included in one of a plurality of control signals to be formed, and the terminal has already obtained the service information,
In response to the control signal serving as the trigger from the second step,
Characterized by including a fourth step of not responding by
Video information transfer method. 11. A center having service information and a line
Exchange to be exchanged and base station connected to this exchange
And time-division multiplexing including terminals connected to this base station.
Service information used by the communication system
A first switch for transferring a notification to the base station via the exchange.
Step, provided in the base station and transferred to the base station
A second step of further transferring the service information to the terminal.
The automatic information transfer method comprising the steps of:
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
If the terminal has already obtained the service information,
In response to the control signal serving as the trigger from the second step,
Self characterized in that it comprises a fourth step does not respond to
Video information transfer method. 12. A center having service information and a line
Exchange to be exchanged and base station connected to this exchange
And time-division multiplexing including terminals connected to this base station.
Service information used by the communication system
A first switch for transferring a notification to the base station via the exchange.
Step, provided in the base station and transferred to the base station
A second step of further transferring the service information to the terminal.
The automatic information transfer method comprising the steps of:
The terminal transmits the service information using a time slot.
And the service information to the terminal
Control signal that is a trigger for
The base station is provided in one of a plurality of areas, and the base station is provided in each of a plurality of areas.
The service information transferred to the
If the terminal has already obtained the service information,
In response to the control signal serving as the trigger from the second step,
Characterized by including a fourth step of not responding by
Video information transfer method.