JP2000341292A - Packet communication system and mobile station unit and terminal used for this packet communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently transmit data with the number of packets taking respective situations into account in the case of sending the data from a terminal to a base station. SOLUTION: In the case of transmitting data from a mobile terminal PS1 to a base station CS1, the base station CS1 decides a continuous transmission permission number S on the basis of each information such as subscriber authentication information, the number of terminals and a transmission/reception data quantity and informs the mobile terminal PS1 about the number S together with each information by including them in an idle channel signal. Upon the receipt of the idle channel signal, the mobile terminal PS1 sets a continuous transmission packet request number N satisfying the continuous transmission permission number S on the basis of the above information, incorporates the number N to a reservation signal and returns it, and the base station CS1 continuously transmits data by a continuous transmission packet decision number M having finally been permitted. In the case of setting a packet transmission number, the degree of freedom is provided between the base station CS1 and the mobile terminal PS1 to attain data communication with high efficiency as the entire system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a PHS (Pe
The present invention relates to a packet communication system in which packet communication is performed between a terminal device including a rsonal handy-phone system) and a base station device connected to a wired network, and particularly when transmitting packet data from the terminal device to the base station device. The present invention relates to a packet communication system characterized by a method for setting the number of packet transmissions, a base station device and a terminal device used in the packet communication system.

[0002]

2. Description of the Related Art A packet communication system includes a plurality of terminals, and a base station connected to a wired network. Communication from the base station to the terminal is broadcast, and communication from the terminal to the base station is random access. Is common. In such a system, when data is transmitted from a terminal to a base station, the following is performed.

Assume that terminals A, B, and C exist under a base station as shown in an example of a data transmission sequence in FIG. 7, and a packet group to be transmitted to terminal A is generated. When terminal A receives an empty signal from the base station indicating that the uplink is idle (unused), first,
A reservation signal for reserving data transmission for the number of packets N is returned to the base station.

[0004] In response to this, the base station receives the reservation signal, and transmits a transmission permission signal for permitting transmission of M packets (M ≦ N) to terminal A according to its own situation. A prohibition signal for stopping transmission of the uplink signal is transmitted to the other terminals B and C. Thereby, the terminal A
Transmits M data items permitted by the base station to the base station continuously in packet units. At this time, even if an error occurs in the uplink or downlink signal during the transmission of M packets, the base station and the terminal A are prohibited because the resources are secured by the first exchange of the reservation signal and the transmission permission signal. The transmission of the signal and the transmission of the packet signal can be performed subsequently.

[0005]

As described above, in the conventional packet communication system, the number M of packets that a terminal can actually transmit by exchanging a reservation signal and a transmission permission signal between a base station and a terminal is equal to the base station. Is limited by the situation. Moreover, the number of packets M is known after the terminal issues the reservation signal. In this case, the number M of continuous transmission packet determinations notified by the base station is determined based on the situation of only the base station.

However, when determining the number M of continuous transmission packets to be notified by the base station, it is not determined by the situation of the base station alone, but by both the base station and the terminals A, B, and C under its control. It may be better to decide in consideration of the situation.

For example, when the number of terminals under the control of the base station is large, if the number M of continuous transmission packet determinations is large, the occupation time of one terminal in uplink data communication becomes long, and as a result, many other terminals Has a lower probability of transmitting uplink data. Therefore, in such a case, it is better to reduce the number M of continuous transmission packet decisions.

[0008] The number M of continuous transmission packet determinations for which a terminal is permitted to transmit from the base station is the same for all terminals. Therefore, prioritize each terminal,
The number M of continuous transmission packet determinations cannot be changed according to the priority.

That is, conventionally, the number M of continuous transmission packets determined by the base station is determined based on the situation of the base station alone, so that the situation on the terminal side is not reflected in the number of continuous packets that can be actually transmitted by the terminal. There has been a problem that transfer efficiency has deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made in consideration of the above points, and has been made in consideration of the above circumstances, and has been made in consideration of the above circumstances. It is an object to provide a system, a base station device and a terminal device used in the packet communication system.

[0011]

According to the present invention, a common communication channel is established between at least one base station device constituting a wireless area and a plurality of terminal devices existing in the wireless area of the base station device. In a packet communication system that performs packet communication using, for example, the base station apparatus uses the number of controlled terminal apparatuses, the subscriber authentication information of each controlled terminal apparatus, and the amount of data transmitted and received within a certain period of time. Means for determining a permitted number S of continuous transmission packets of data, and means for determining a number of continuous transmission packets M for uplink data with respect to the number N of continuous transmission packet requests transmitted from the terminal device Means for determining the number of packets determined by the packet transmission means, and the number of permitted continuous transmission packets S determined by the number of continuous transmission packet permitted number determination means, The number of continuous transmission packets determined by the continuous transmission packet determination number determination unit is determined by the continuous transmission packet determination number determination unit with respect to the number N of continuous transmission packet requests returned from the terminal device after notifying the terminal devices together with the authentication information and the amount of transmitted / received data. Upstream control means for notifying M to each of the terminal devices, and providing the terminal device with a continuous transmission packet request number N satisfying the continuous transmission packet permission number S notified from the base station device. Quantity, subscriber authentication information,
Means for determining the number of continuous packet requests determined using at least one piece of information of the amount of transmitted and received data, and transmitting the number of continuous transmission packet requests N determined by the number of continuous transmission packet requests to the base station apparatus And transmission control means for continuously transmitting the determined number M of continuous transmission packets returned from the base station apparatus to the base station apparatus in packet units.

[0012] According to such a configuration, the continuous transmission packet permission number S determined by the base station apparatus which is broadcast at fixed time intervals is compared with the continuous transmission packet permission number S satisfying the continuous transmission packet permission number S on the terminal apparatus side. Since the number of transmission packet requests N can be set and data can be transmitted according to the finally permitted number M of continuous transmission packets determined, efficient data communication can be performed as a whole system.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

Since the present invention can be suitably applied to a mobile packet communication system, the following description will be made assuming a mobile packet communication system using a PHS.

FIG. 1 is a schematic configuration diagram of a mobile packet communication system according to the present invention, where CS1 to CSn indicate PHS base stations. These base stations CS1 to CSn are geographically distributed in a service area covered by the system, and one or a plurality of them form a wireless area.

PS1 to PSm indicate mobile terminal devices using PHS. These mobile terminal devices PS1 to PS
m is connected to the nearest base station via a radio line in a cell formed by each of the base stations CS1 to CSn. As a wireless access method between the base station and the mobile terminal device, for example, TDMA-TDD (Time Division M
ultiple Access-Time Division Duplex) system is used. The mobile terminal devices PS1 to PSm include a mobile information terminal having a data communication function and a wireless access function, and a mobile terminal device having a personal computer PC connected to the mobile phone, in addition to a mobile phone having only a call function.

Each of the base stations CS1 to CSn is connected to an I 'interface network (hereinafter referred to as an I' network) IN2 via a subscriber line and to a dedicated line network PN via a dedicated line. Connected. I 'net IN2 is PH
It is for accommodating the S base stations CS1 to CSn and constitutes a public network composed of a circuit switching network together with the integrated services digital network (ISDN) IN1. Many wired terminal devices (not shown) are connected to the public network. The leased line network PN forms a packet network. The packet exchange is performed according to the protocol specified in 25.

A gateway GW as a data communication device is connected to the ISDN network IN1 and the leased line network PN, and a server device AS is connected to the gateway GW via, for example, a LAN. The server device AS
It has a function as a mail server when e-mail is transmitted between the mobile terminal devices PS1 to PSm and the wired terminal device, and notifies the mobile terminal devices PS1 to PSm and the wired terminal device of Web information such as news and advertisements. It has a function as a content server to execute.

Note that the gateway GW is also connected to a computer network such as the Internet (not shown) via an access server of a service provider, for example. The Internet has many WWW (World-Wi
de Web) The server is connected. By using the TCP / IP protocol for these WWW servers, not only the subscriber wired terminal devices but also the above-mentioned mobile terminal devices PS1 to PS
Access is also possible from Sm.

Next, the base stations CS1 to CSn are configured as follows. FIG. 2 is a functional block diagram showing the configuration.

The base stations CS1 to CSn are connected to an antenna 111
, A modem unit 20, and a TDMA unit 3.
0, an interface unit 40, a control unit 50, an information storage unit 60, and a data communication unit 70.

That is, the radio carrier signals arriving from the mobile terminal devices PS1 to PSm are received by the antenna 111 and then input to the receiving unit 113 via the high frequency switch (SW) 112 of the radio unit 10. The receiving unit 113 converts the received wireless carrier signal into the synthesizer 11
4 and down-converted into a received intermediate frequency signal. The frequency of the local oscillation signal generated from the synthesizer 114 is instructed by the control unit 50 according to the radio channel frequency. The radio unit 10 includes a reception field strength detection unit (RS
SI) 116 is provided. The reception electric field strength detection section 116 detects the reception electric field strength of the radio carrier signal arriving from the mobile terminal apparatuses PS1 to PSm, and the detected value is used as a control section 50 for searching for an idle channel or controlling handover of the mobile terminal apparatus. Will be notified.

The received intermediate frequency signal output from the receiving section 113 is input to the demodulation section 221 of the modem section 20. The demodulation unit 221 performs digital demodulation of the received intermediate frequency signal, thereby reproducing a digital demodulated signal.

The TDMA decoding section 33 of the TDMA section 30
1 separates the digital demodulated signal for each reception time slot. If the data of the separated slot is audio data, the audio data is input to the interface unit 40. On the other hand, if the data of the separated slot is packet data or control data, these data are input to the data communication unit 70.

The interface unit 40 has an ADPCM (Ad
aptive Differential Pulse Code Modulation) transcoder 441, public line interface 442,
And a dedicated line interface 443.

The ADPCM transcoder 441 decodes the audio data output from the TDMA decoding section 331. The decoded digital audio signal is transmitted from the public line interface 442 to the I 'network IN2. The public line interface 442 performs a call connection process for the I 'network IN2 according to an instruction from the control unit 50. The leased line interface 443 performs processing for opening a connection for packet communication to the leased line network PN, etc., in accordance with an instruction from the control unit 50.

The data communication unit 70 is provided for the mobile terminal device PS1.
If the data arriving from .about.PSm is control data addressed to the own station, the control data is input to the control unit 50. The control unit 50 performs processing for establishing a connection for packet communication, which will be described later, based on the control data. On the other hand, if the data arriving from the mobile terminal devices PS1 to PSm is packet data addressed to the outside, the data communication unit 70 sends the packet data to the leased line network PN via the leased line interface 443.

On the other hand, a digital communication signal arriving from the I 'network IN2 is received by the public line interface 442. If the digital communication signal is audio data, the digital communication signal is subjected to compression encoding processing by the ADPCM transcoder 441 and is input to the TDMA encoding unit 332. On the other hand, if the digital communication signal is control data, it is input to the data communication unit 70. Further, packet data arriving from the leased line network PN is input to the data communication unit 70 via the leased line interface 443.

If the destination of the input data is the mobile terminal device PS1 to PSm, the data communication unit 70 inputs the data to the TDMA encoding unit 332. On the other hand, if the input data is control data addressed to the own station,
The control data is input to the control unit 50. Control unit 50
Performs various controls by analyzing the input control data. Further, the control unit 50 includes the mobile terminal devices PS1 to PSm
The control data addressed to the TD via the data communication unit 70
Output to MA encoding section 332.

[0030] The TDMA encoding unit 332 converts the AD
The digital voice data of each channel output from the PCM transcoder 441 and the control data and packet data output from the data communication unit 70 are inserted into the transmission time slot designated by the control unit 50 and multiplexed. The modulation section 222 digitally modulates the transmission intermediate frequency signal with the multiplexed digital communication signal output from the TDMA encoding section 332, and inputs the modulated transmission intermediate frequency signal to the transmission section 115.

The transmitting section 115 mixes the modulated transmission intermediate frequency signal with the local oscillation signal generated from the synthesizer 114, upconverts the signal into a radio carrier frequency, and further amplifies the signal to a predetermined transmission power level. The wireless carrier signal output from the transmitting unit 115 is transmitted from the antenna 111 to the mobile terminal devices PS1 to PSm via the high frequency switch 112.

The control unit 50 has a microcomputer as a main control unit. The control functions according to the present invention include a terminal number management unit 551, a subscriber authentication information management unit 552, a data amount measurement unit 553, and a continuous transmission unit. A packet permission number determination unit 554 and an upstream control unit 555 are provided.

The terminal number management section 551 manages the number D2 of mobile terminals PS1 to PSm under the control of the base station. The subscriber authentication information management unit 552 manages the subscriber authentication information D1 (terminal ID and authentication information) of the mobile terminal devices PS1 to PSm under the control of the base station. The data amount measuring unit 553 refers to the transmission buffer 661 and the reception buffer 662 provided in the information recording unit 60, and refers to the transmission / reception data amount D3 of the base station within a certain time.
Is measured.

The continuous transmission packet permitted number determination unit 554
The number S of continuous transmission packets permitted for uplink data is determined. At this time, the number of terminals D2 of the mobile terminal devices PS1 to PSm obtained by the terminal number management unit 551 and the number of terminals D2 obtained by the subscriber authentication information management unit 552 are obtained. The number S of continuous transmission packets permitted is determined using at least one of the subscriber authentication information D1 of the mobile terminal devices PS1 to PSm and the transmission / reception data amount D3 obtained by the data amount measurement unit 553.

The uplink control unit 555 calculates the number S of continuous transmission packets allowed determined by the number determination unit 554 of continuous transmission packets and the number D2 of mobile terminals PS1 to PSm obtained by the terminal number management unit 551. The subscriber authentication information D1 of the mobile terminal devices PS1 to PSm obtained by the subscriber authentication information management unit 552 and the transmission / reception data amount D3 obtained by the data amount measurement unit 553 are included in the free-space signal to make the mobile terminal devices PS1 to PS1. Notify PSm. The format of the empty signal will be described later with reference to FIG. Further, the uplink control unit 555 notifies the number of continuous transmission packet requests N returned from the terminal device requesting data transmission after notifying the number S of continuous transmission packet permission, for example, the priority of the terminal device ( The processing includes determining the final number of packets (determined number M of continuous transmission packets) in consideration of the fee, and transmitting the determined number M of continuous transmission packets to the terminal device.

The mobile terminals PS1 to PSm are configured as follows. FIG. 3 is a functional block diagram showing the configuration.

The mobile terminals PS1 to PSm include a radio unit 1 having an antenna 11, a modem unit 2, and a TDMA unit 3.
, A communication unit 4, a control unit 5, an information storage unit 6, a data communication unit 7, a display unit 8, and a key input unit 9.

That is, the radio carrier signals arriving from the base stations CS1 to CSn are received by the antenna 11, and then input to the receiving unit 13 via the high frequency switch (SW) 12 of the radio unit 1. In the receiving unit 13, the received radio carrier signal is mixed with the local oscillation signal generated from the synthesizer 14 and down-converted into a received intermediate frequency signal. The local oscillation signal frequency generated from the synthesizer 14 is set to a value corresponding to the radio channel frequency according to an instruction from the control unit 5. Also, the radio unit 1 includes a reception field strength detection unit (RSSI) 16
Is provided. In this reception electric field strength detection unit 16,
The received electric field strengths of the radio carrier signals arriving from the base stations CS1 to CSn are detected, and the detected values are reported to the control unit 5 for, for example, determining and displaying the reception quality.

The received intermediate frequency signal output from the receiver 13 is input to the demodulator 21 of the modem 2. The demodulation section 21 digitally demodulates the received intermediate frequency signal, thereby reproducing the digital demodulated signal.

TDMA decoding section 31 of TDMA section 3
Separates the digital demodulated signal for each reception time slot. If the data of the separated slot is audio data, the audio data is transmitted to the interface unit 4.
To enter. On the other hand, if the data of the separated slot is packet data or control data, these data are input to the data communication unit 7.

The communication unit 4 has an ADPCM (Adaptive Diffe
rential Pulse Code Modulation) Transcoder 41
, A PCM codec 42, a speaker 43, and a microphone 44. The ADPCM transcoder 41 decodes the audio data output from the TDMA decoding unit 31. The PCM codec 42 uses the A
The digital audio signal output from the DPCM transcoder 41 is converted into an analog signal, and this audio signal is output from the speaker 43 as loudspeaker.

The data communication unit 7 receives the data supplied from the TDMA decoding unit 31 and supplies the data to the control unit 5. If the received data is control data, the control unit 5 analyzes the control data and performs necessary control.
On the other hand, if the received data is packet data arriving from a server or the like, the packet data is depacketized, stored in the information storage unit 6, and supplied to the display unit 8 including, for example, a liquid crystal display (LCD). Display.

On the other hand, the user's voice signal input to the microphone 44 is PCM-coded by the PCM codec 42 and then compression-coded by the ADPCM transcoder 41. Then, the encoded audio data is TDM
It is input to the A encoding unit 32. The control data and packet data output from the control unit 5 are input to the TDMA encoding unit 32 via the data communication unit 7.

[0044] The TDMA encoding section 32
The digital audio data of each channel output from the CM transcoder 41 and the control data and packet data output from the data communication unit 7 are inserted into a transmission time slot designated by the control unit 5 and multiplexed. The modulation unit 22 digitally modulates the transmission intermediate frequency signal with the multiplexed digital communication signal output from the TDMA encoding unit 32, and inputs the modulated transmission intermediate frequency signal to the transmission unit 15.

The transmitting section 15 mixes the modulated transmission intermediate frequency signal with the local oscillation signal generated from the synthesizer 14, upconverts it to a radio carrier frequency, and further amplifies it to a predetermined transmission power level. The radio carrier signal output from the transmitting unit 15 is transmitted from the antenna 11 via the high frequency switch 12 to the base stations CS1 to CSn.
Sent to

The control unit 5 has, for example, a microcomputer as a main control unit, and includes a continuous transmission packet request number determination unit 51 and a transmission control unit 52 as control functions according to the present invention.

The number-of-consecutive-transmission-packets-request determining unit 51 performs processing for determining the number N of continuous transmission packet requests that satisfies the number S of continuous-transmission packets permitted in the airline signal broadcast from the base station. At this time, the number of terminals D of the mobile terminal devices PS1 to PSm included in the airline signal D
2. The number N of continuous transmission packet requests is set using at least one of the subscriber authentication information D1 and the transmission / reception data amount D3. The transmission control unit 52 includes the number N of continuous transmission packet requests determined by the number-of-continuous-transmission-packet request determination unit 51 in the reservation signal, transmits the reservation signal to the base station, and then returns the determined number M of continuous transmission packets returned from the base station. Is received, the process for continuously transmitting data for the number of packets according to the number M of continuous transmission packet determinations to the base station is performed. The format of the reservation signal will be described later with reference to FIG.

FIG. 4 is a diagram showing a format configuration of an empty signal according to the present invention.

The idle signal is a signal for the base station to notify each terminal that the uplink of the communication channel is idle. As shown in FIG. 4, in addition to the header information H1,
It includes the number S of continuous transmission packets permitted, the subscriber authentication information D1, the number of terminals D2, and the amount of transmitted / received data D3.

The header information H1 indicates the address and the like of the base station that has transmitted this empty signal. The continuous transmission packet permission number S indicates the continuous number of packets permitted by the base station.
Obtained by The subscriber authentication information D1 indicates identification information of each terminal under the control of the base station, and is obtained by the subscriber authentication information management unit 552. The subscriber authentication information D1 includes an ID unique to each terminal and authentication information. The terminal number D2 indicates the number of each terminal under the control of the base station, and is obtained by the terminal number management unit 551. The transmitted / received data amount D3 indicates the amount of data transmitted / received within a certain period of time, and is obtained by the data amount measuring unit 553.

FIG. 5 is a diagram showing a format configuration of a reservation signal according to the present invention.

The reservation signal is a signal for reserving data transmission from each terminal to the base station when the uplink line of the communication channel is idle. As shown in FIG. , The number N of continuous transmission packet requests.

The header information H2 indicates the address of the terminal that has transmitted the reservation signal, the address of the base station that is the transmission destination, and the like. The number of continuous transmission packet requests N indicates the number of packets set by the terminal so as to satisfy the continuous transmission packet permission number S, and is obtained by the continuous transmission packet request number determination unit 51.

Next, the operation of the wireless packet communication system configured as described above will be described. Here, the communication procedure will be described on the assumption that packet communication is performed between the base station CS1 and a plurality of mobile terminal devices PS1, PS2, and PS3 under its control via a common communication channel.

FIG. 6 is a sequence diagram showing a packet communication procedure according to the present invention.

When the uplink of the communication channel is in an idle state (unused state), the base station CS1 first sets the mobile terminal apparatus PS1, PS1 under control of an empty signal indicating that the uplink is idle. Notify PS2 and PS3. that time,
The base station CS1 determines the permitted number S of continuous transmission packets of packets that can be permitted to the subordinate mobile terminal devices PS1, PS2, and PS3 under the following conditions.

(1) The permitted number S of continuous transmission packets is determined according to the subscriber authentication information D1 (consisting of the terminal ID and the authentication information) unique to each subordinate terminal. This is because the subscription conditions and the like differ for each subscriber, and the content of the packet communication service to be provided can be changed by this (for example, the number S of continuous transmission packets permitted is changed according to the fee). (2) The number S of continuous transmission packets permitted is determined according to the number D2 of terminals under the control. This is because, for example, when the number of terminals D2 is large, it is considered that many terminals need to transmit and receive data. Therefore, by reducing the number of continuous transmission packets per terminal, it is possible to transmit data to many terminals. This is for performing scheduling. (3) The number S of continuous transmission packets permitted is determined according to the transmission / reception data amount D3 of the base station CS1. This is because, for example, when the transmission / reception data amount D3 of the base station CS1 within a certain time is large, the continuous transmission packet permission number S is determined accordingly.

As described above, when the base station CS1 determines the continuous transmission packet permission number S using at least one of the subscriber authentication information D1, the number of terminals D2, and the transmission / reception data amount D3, the continuous transmission packet permission number S and each of the above-mentioned subscriber authentication information D1, the number of terminals D2, and the amount of transmitted / received data D3 are written in the empty line signal, and the mobile terminal devices PS1, PS2,
Notify PS3.

More specifically, in the control unit 50 shown in FIG. 2, the continuous transmission packet permitted number determination unit 554 determines the number of terminals D2 obtained by the terminal number management unit 551, and the subscriber authentication information obtained by the subscriber authentication information management unit 552. D1,
Using at least one piece of information of the transmission / reception data amount D3 obtained by the data amount measurement unit 553, the allowable number S of continuous transmission packets of uplink data is determined. Then, the uplink control unit 555 sets the number of consecutive transmission packet permitted numbers
54, the number S of continuous transmission packets permitted determined by S.
The subscriber authentication information D1, the number of terminals D2, and the transmission / reception data amount D3 are included in an empty signal to control the mobile terminal device PS1 under control.
Notify ~ PSm. FIG. 4 shows an example of the format of the empty line signal at this time.

This empty signal is broadcast to the mobile terminal devices PS1 to PSm under the control of the base station CS1, so that the mobile terminal devices PS1 to PSm receive the empty signal to allow the base station CS1 to receive the empty signal. In addition to the permitted number S of continuous transmission packets permitted, the subscriber authentication information D1 of each terminal, the base station C
It is possible to know the number D2 of terminals under the control of S1, and the amount D3 of data transmitted and received by the base station CS1.

Now, it is assumed that the number S of continuous transmission packets permitted in an empty signal is "4" and a packet group to be transmitted to the mobile terminal device PS1 is generated. The mobile terminal device PS1 receives the empty signal transmitted from the base station CS1, and receives the allowed number S of continuous transmission packets included in the empty signal.
= 4 is set by itself. When setting the number N of continuous transmission packet requests, the number N of continuous transmission packet requests is set using at least one of the subscriber authentication information D1, the number of terminals D2, and the amount of transmitted / received data D3 included in the empty signal. Here, it is assumed that the mobile terminal device PS1 has set the number N of continuous transmission packet requests to “3”. This number N of continuous transmission packet requests is written in the reservation signal and returned to the base station CS1.

More specifically, in the control unit 5 shown in FIG.
The continuous transmission packet request number determining unit 51 determines that the base station CS1
By checking the number S of continuous transmission packets permitted included in the empty signal from the subscriber, at least one of the subscriber authentication information D1, the number of terminals D2, and the transmitted / received data amount D3 included in the empty signal is checked. The number of continuous transmission packet requests N (N ≦ S) that satisfies the continuous transmission packet permission number S determined by the base station CS1 using the information is set. And the transmission control unit 5
2 returns the number N of continuous transmission packet requests set by the number-of-continuous-transmission-packets request determination unit 51 to the base station CS1 with the number included in the reservation signal. FIG. 5 shows a format example of the reservation signal at this time.

On the other hand, upon receiving the reservation signal transmitted from the mobile terminal device PS1, the base station CS1 confirms the number of continuous transmission packet requests N = 3 included in the reservation signal, for example, The final determined number M of continuous transmission packets is determined in consideration of the terminal priority (fee etc.), and this is included in the transmission permission signal and transmitted to the mobile terminal device PS1. At this time, a prohibition signal for prohibiting communication is transmitted to the other mobile terminals PS2 and PS3. Here, the transmission permission signal and the prohibition signal are logically divided and described. However, if the IDs of the terminal for which communication is permitted and the terminal for which prohibition are added, the transmission permission signal and the prohibition signal can be combined into one access control signal. Can be output at once.

When mobile terminal apparatus PS1 receives the transmission permission signal transmitted from base station CS1 after transmitting the reservation signal, mobile terminal apparatus PS1 continuously transmits data in packet units in accordance with the determined number M of continuous transmission packets included in the transmission permission signal. To the base station CS1. This continuous transmission packet determination number M is
This reflects the number of continuous transmission packet requests N = 3 set by itself. In the example of FIG. 6, the number of packets of N and M is the same (N = 3, M = 3), but may be different depending on the circumstances of the base station.

As described above, when the uplink line of the communication channel is idle, the number S of continuous transmission packets determined by the base station CS1 is notified, and the number of permitted continuous transmission packets S1 is transmitted to the mobile terminal apparatus PS1. Can be set freely, and data can be transmitted in accordance with the finally permitted number M of continuous transmission packet decisions, which enables efficient data communication as a whole system. Becomes

In addition, for the number S of continuous transmission packets permitted to be transmitted to all the terminal devices under the control of the base station, the terminal device that has received this is based on the subscriber authentication information received at the same time. It is possible to transmit a continuous transmission packet request number N different from that of the terminal device.

For example, let us consider a case where the number S of continuous transmission packet grants which the base station CS1 broadcasts to each terminal device under control is "5". The permitted number S of continuous transmission packets is equal to the base station CS1.
Is notified to each terminal device under the control at regular time intervals.
Among the terminal devices under the control, the terminal device PS1 that needs to transmit data is the number S of continuously transmitted packets received immediately before, the subscriber authentication information D1, the number D2 of terminals received at the same time, and the amount D3 of transmitted / received data. , The number of continuous transmission packet requests N is set.

Here, it is assumed that the terminal device PS1 can set the number N of continuous transmission packet requests larger than the other terminal devices PS2 to PSm in some cases. For example, when the number of each terminal is 2 or less, the terminal device PS1 can set the number N of continuous transmission packet requests as twice as many as the number S of continuous transmission packet permitted. If this condition is satisfied, the terminal device PS1 receives the number S (= 5) of continuous transmission packet grants, and transmits the number N of continuous transmission packet requests to the base station CS1 as "10". When the current number of terminals under control is 2 or less, the base station CS1 finalizes “10” as the number M of continuous transmission packet determinations in order to permit the number N (= 10) of continuous transmission packet requests from the terminal device PS1. Is determined and returned to the terminal device PS1. The terminal device PS1 that has received the determined number M (= 10) of continuous transmission packets continuously transmits the data for ten packets to the base station CS1 in packet units.

[0069]

As described above, according to the present invention, when data is transmitted from a terminal to a base station, the base station determines the number of continuous transmission packets permitted, and the terminal device determines whether the continuous transmission packet is permitted. The number of continuous transmission packets that satisfies the number can be set freely, and data can be transmitted according to the finally permitted number of consecutive transmission packets determined. As described above, when the number of packets to be transmitted is set, the degree of freedom is provided between both the base station and the terminal, so that efficient data communication can be performed as a whole system.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a mobile packet communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a base station device in the mobile packet communication system of FIG. 1;

FIG. 3 is a block diagram showing a configuration of a mobile terminal device in the mobile packet communication system of FIG. 1;

FIG. 4 is a diagram showing a format configuration of an empty signal according to the present invention.

FIG. 5 is a diagram showing a format configuration of a reservation signal according to the present invention.

FIG. 6 is a sequence diagram showing a packet communication procedure according to the present invention.

FIG. 7 is a sequence diagram showing a conventional packet communication procedure.

[Explanation of symbols]

 CS1 to CSn base station PS1 to PSm mobile terminal device IN1 ISDN network IN2 I 'network PN dedicated line network AS server device GW gateway 1, 10 radio unit 2, 20 modem unit 3, 30 TDMA unit 4 Talk unit 5, 50 Control unit 6, 60 Information storage unit 7, 70 Data communication unit 8 Display unit 9 Input unit 11, 111 Antenna 12, 112 High frequency switch (SW) 13, 113 receiving unit 14, 114 synthesizer 15, 115 transmitting unit 16, 116 receiving electric field strength detecting unit (RSSI) 21, 221 demodulating unit 22, 222 modulating unit 31, 331 TDMA decoding unit 32, 332 TDMA encoding unit 40 interface units 41, 441 ADPCM transcoder 42 PCM codec 43 speaker 44 Microphone 442 Public line interface 443 Dedicated line interface 51 Continuous transmission packet request number determination unit 52 Transmission control unit 551 Terminal number management unit 552 Subscriber authentication information management unit 553 Data amount measurement unit 554 Continuous transmission packet Permitted number determination unit 555 ... Uplink control unit

Claims (11)

[Claims] 1. Packet communication for performing packet communication between at least one base station device constituting a wireless area and a plurality of terminal devices existing in the wireless area of the base station device using a common communication channel. In the system, the base station apparatus includes: a continuous transmission packet permission number determining unit that determines a continuous transmission packet permission number of uplink data; and a continuous transmission packet of uplink data with respect to the continuous transmission packet request number transmitted from the terminal apparatus. The continuous transmission packet determination number determining means for determining the determination number, and the continuous transmission packet permission number determined by the continuous transmission packet permission number determination means is notified, and then the continuous transmission packet request number returned from the terminal device is notified. The determined number of continuous transmission packets determined by the determined number of continuous transmission packet determination means to each of the terminal devices. The terminal device comprises: a continuous transmission packet request number determining unit that determines a continuous transmission packet request number that satisfies the continuous transmission packet permission number notified from the base station device; After transmitting the continuous transmission packet request number determined by the transmission packet request number determination means to the base station apparatus, the base station apparatus continuously returns the data of the determined continuous transmission packet number in packet units returned from the base station apparatus. A packet communication system comprising transmission control means for transmitting to a station device. 2. Packet communication for performing packet communication between at least one base station device constituting a wireless area and a plurality of terminal devices existing in the wireless area of the base station device using a common communication channel. In the system, the base station device includes: a terminal number management unit that manages the number of each terminal device under control; a subscriber authentication information management unit that manages subscriber authentication information of each terminal device under control; Data amount measuring means for measuring the quantity, the number of each terminal device obtained by the terminal number managing means, the subscriber authentication information of each terminal device obtained by the subscriber authentication information managing means, and the data amount measuring means obtained by the data amount measuring means. Determining the permitted number of continuous transmission packets for uplink data using at least one of the information of the amount of transmitted / received data to be transmitted The number of continuous transmission packets determined from the terminal device, the number of continuous transmission packets determined from the terminal device, and the number of continuous transmission packets determined from the terminal device; After notifying the number of continuous transmission packets permitted together with the number of each terminal device, the subscriber authentication information, and the amount of transmitted / received data to each terminal device, the above-described continuous transmission is performed for the number of continuous transmission packet requests returned from the terminal device. Up control means for notifying each terminal device of the determined number of continuous transmission packets determined by the determined number of packet determination means, wherein the terminal device satisfies the permitted number of continuous transmission packets notified from the base station device. The number of continuous transmission packet requests to be transmitted is determined by at least one of the number of terminal devices, the subscriber authentication information, and the amount of transmitted / received data. Means for deciding the number of continuous packet requests determined by using the number of continuous transmission packet requests determined by the means for deciding the number of continuous transmission packet requests to the base station apparatus, and then the continuous transmission returned from the base station apparatus A packet communication system, comprising: transmission control means for continuously transmitting the determined number of data in packet units to the base station apparatus. 3. A base station apparatus for performing packet communication with a plurality of terminal apparatuses sharing a communication channel, comprising: a continuous transmission packet permission number determining unit that determines a continuous transmission packet permission number of uplink data; A base station apparatus comprising: an uplink control means for notifying each of the terminal apparatuses of the permitted number of continuous transmission packets determined by the permitted number of continuous transmission packet determination means. 4. The uplink control means includes a vacant line signal indicating a use / non-use state of an uplink of the communication channel including the number of permitted continuous transmission packets determined by the number of permitted continuous transmission packets determination means. 4. The base station apparatus according to claim 3, wherein each of the terminal apparatuses is notified. 5. A terminal number management means for managing the number of each terminal device under control, a subscriber authentication information management means for managing subscriber authentication information of each terminal device under control, and measuring a transmission / reception data amount. Data amount measuring means, wherein the number of permitted successive transmission packets is determined by the number of terminal devices obtained by the terminal number managing means, and the subscriber authentication information of each terminal device obtained by the subscriber authentication information managing means. 4. The base station apparatus according to claim 3, wherein at least one of the transmission / reception data amounts obtained by said data amount measurement means is used to determine the permitted number of continuous transmission packets for uplink data. 6. The apparatus according to claim 1, wherein said uplink control means includes means for determining whether the number of continuous transmission packets permitted by said continuous transmission packet permission number determination means is equal to the number of said continuous transmission packet permission numbers, and 6. The base station apparatus according to claim 5, wherein each terminal apparatus is notified by including information on the number of apparatuses, subscriber authentication information, and the amount of transmitted / received data. 7. A terminal device for performing packet communication with at least one base station device constituting a wireless area, wherein a continuous transmission packet request that satisfies the permitted number of continuous transmission packets notified from the base station device is provided. Means for determining the number of continuous packet requests, and transmitting the number of continuous transmission packet requests determined by the number of continuous packet requests to the base station apparatus,
A terminal device, comprising: transmission control means for continuously transmitting data for the number of continuous transmission packet requests returned from the base station device to the base station device in packet units. 8. The continuous packet request number determining means transmits at least one of the number of terminal devices, subscriber authentication information, and transmitted / received data amount notified from the base station device together with the permitted number of continuous transmission packets. 8. The terminal device according to claim 7, wherein the terminal device determines the number of continuous transmission packet requests that satisfies the continuous transmission packet permission number. 9. The transmission control unit transmits the reservation signal for reserving data transmission to the base station device after including the number of continuous transmission packet requests determined by the continuous packet request number determination unit, When a continuous transmission packet number determination signal including a continuous transmission packet determination number indicating that data transmission is permitted for the reservation signal is sent from the base station apparatus, data for the continuous transmission packet determination number is transmitted. 8. The terminal device according to claim 7, wherein the terminal device transmits the packet to the base station device continuously in packet units. 10. A wireless communication system comprising: at least one base station device forming a wireless area; and a plurality of wireless communication terminals existing in the wireless area of the base station device. In the packet communication system for performing packet communication using a common communication channel, the wireless communication terminal transmits, to the base station apparatus, the number of continuous packet requests required for data transmission / reception during packet communication on the communication channel. The base station apparatus further comprises: a receiving means for receiving the number of continuous packet requests transmitted from the wireless communication terminal; a number of continuous packet requests received by the receiving means; Determining means for determining the number of continuous packets to be transmitted to the wireless communication terminal that has requested data transmission / reception based on the number of consecutive packets. A communication unit that notifies the wireless communication terminal of the number of continuous packets determined by the determination unit. 11. A wireless communication system comprising: at least one base station device forming a wireless area; and a plurality of wireless communication terminals existing in the wireless area of the base station device. In the packet communication system for performing packet communication using a common communication channel, the wireless communication terminal transmits, to the base station apparatus, the number of continuous packet requests required for data transmission / reception during packet communication on the communication channel. The base station apparatus, receiving means for receiving the number of continuous packet requests transmitted from the wireless communication terminal, terminal number management means for managing the number of each wireless communication terminal under control, Subscriber authentication information management means for managing the subscriber authentication information of each wireless communication terminal under control; data amount measuring means for measuring the amount of transmitted / received data; The number of each wireless communication terminal under control managed by the terminal number management means, the subscriber authentication information of each controlled wireless communication terminal managed by the subscriber authentication information management means, and the transmission / reception data measured by the data amount measurement means Based on any one of the information of the quantity, the number of continuous packet requests received by the receiving means, and the number of continuous packets that can be transmitted by the own station, the data is transmitted to the wireless communication terminal that has requested data transmission / reception. A packet communication system comprising: a determination unit for determining the number of continuous packets; and a notification unit for notifying the wireless communication terminal of the number of continuous packets determined by the determination unit.