JPH04355533A - Radio data transmission system - Google Patents

Radio data transmission system

Info

Publication number
JPH04355533A
JPH04355533A JP3155342A JP15534291A JPH04355533A JP H04355533 A JPH04355533 A JP H04355533A JP 3155342 A JP3155342 A JP 3155342A JP 15534291 A JP15534291 A JP 15534291A JP H04355533 A JPH04355533 A JP H04355533A
Authority
JP
Japan
Prior art keywords
terminal
base station
communication
transmission
terminal equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3155342A
Other languages
Japanese (ja)
Inventor
Toshimitsu Shimizu
俊光 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP3155342A priority Critical patent/JPH04355533A/en
Publication of JPH04355533A publication Critical patent/JPH04355533A/en
Pending legal-status Critical Current

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  • Bidirectional Digital Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To provide the transmission system in which a token is controlled even at a terminal equipment in the system in which the terminal equipment and a base station implement the semi-duplex communication. CONSTITUTION:A terminal equipment M1 is provided with a means to send a request signal to acquire a token relating to communication, a base station B1 is provided with a means to invert a token relating to the communication of the terminal equipment when a request signal is received from the terminal equipment and the token of its own communication in the system is inverted by sending the request signal from the terminal equipment even when the base station has the token and the transmission from the terminal equipment is attained again.

Description

【発明の詳細な説明】[Detailed description of the invention]

【０００１】0001

【産業上の利用分野】本発明は無線データ伝送方式に関
し、特に無線回線の半二重制御を行っている無線パケッ
ト通信システムにおける送信権の制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless data transmission system, and more particularly to a transmission right control system in a wireless packet communication system that performs half-duplex control of a wireless line.

【０００２】0002

【従来の技術】従来、無線パケット伝送方式でのポーリ
ング方式を図２（ａ）に示す。Ｐ＃０は発呼勧誘ポーリ
ング信号、Ｐ＃１，Ｐ＃２は現在通信中の特定の端末に
与えられたポール番号である。尚、この図では通信中の
端末は２台で説明している。ここでは、最初のＰ＃０で
番号ｉ（このｉはポール番号とは無関係）の端末が発呼
要求を行い、Ｐ＃１でポール番号を与えられた端末が上
りデータを送信した所である。又、下りスロットの信号
構成は同図（ｂ）のようにポーリング部とデータ部に分
かれ、通常端末は受信モードか送信モードになっており
、受信モードのときはデータ部を見て自分へのデータか
否かを判断し、送信モードのときはポーリング部を見て
自分がパケットを出すタイミングかを判断している。2. Description of the Related Art A conventional polling method in a wireless packet transmission method is shown in FIG. 2(a). P#0 is a call invitation polling signal, and P#1 and P#2 are poll numbers given to specific terminals currently communicating. In this figure, two terminals are communicating. Here, the terminal with number i (this i is unrelated to the poll number) makes a call request at the first P#0, and the terminal given the poll number at P#1 transmits uplink data. . In addition, the signal structure of the downlink slot is divided into a polling part and a data part as shown in the same figure (b), and the terminal is usually in reception mode or transmission mode. It determines whether it is data or not, and when in transmission mode, it looks at the polling section and determines when it is time to send a packet.

【０００３】図３に下りデータ受信中のフローを示す。 同図（ａ）は無線回線上のプロトコル、同図（ｂ）は中
央制御局Ｃ１及び通信相手Ｕ１を含めたシーケンスを示
す。基地局Ｂ１より下りデータｎを送り、端末Ｍ１は正
しく受信したとき基地局からの確認要求Ｐ＃ｎ（ＡＣＫ
）により確認を返し、基地局はその確認を受けて送信権
を反転しＰ＃ｎ（ＲＵＩ）、次のデータを送る。このデ
ータの確認を受けた基地局は、次のデータが車でＷＡＩ
Ｔ表示Ｐ＃ｎ（Ｗ）を示している。このとき送信権は基
地局では実際は相手通信者Ｕ１に送信権がある。FIG. 3 shows a flow during downlink data reception. 3A shows a protocol on a wireless line, and FIG. 1B shows a sequence including the central control station C1 and the communication partner U1. The base station B1 sends downlink data n, and when the terminal M1 receives it correctly, it sends a confirmation request P#n (ACK) from the base station.
), and upon receiving the confirmation, the base station reverses the transmission right and sends P#n (RUI) and the next data. Once the base station has confirmed this data, the following data will be sent to WAI in the car.
T display P#n (W) is shown. At this time, in the base station, the transmitting right actually belongs to the other party U1.

【０００４】0004

【発明が解決しようとする課題】このような従来の方式
では、図３（ａ）の状態となると、端末は基地局に送信
権をとられ、自分からは送信権をとることができない。 又、何らかの形で相手局からのデータが送られてこない
とき、自分に送信権がないために端末からこの通信を終
了することができないという問題もある。換言すれば、
端末は基地局に自分の送信権を制御され、自分では送信
権の制御ができないという問題がある。本発明の目的は
、端末からも送信権の制御を可能にした無線データ伝送
方式を提供することにある。In such a conventional system, when the situation shown in FIG. 3A occurs, the terminal has the transmission right taken by the base station and cannot take the transmission right itself. Another problem is that when data is not sent from the other station for some reason, the terminal cannot terminate the communication because it does not have the right to transmit. In other words,
The problem is that the terminal has its own transmission rights controlled by the base station and cannot control the transmission rights itself. An object of the present invention is to provide a wireless data transmission system that allows control of transmission rights even from a terminal.

【０００５】[0005]

【課題を解決するための手段】本発明の無線データ伝送
方式は、端末には通信に関する送信権を取得するための
要求信号を送信する手段を設け、基地局には端末から前
記要求信号を受けた時に前記端末の通信に関する送信権
を反転する手段を設けている。[Means for Solving the Problems] In the wireless data transmission system of the present invention, a terminal is provided with means for transmitting a request signal for acquiring transmission rights regarding communication, and a base station receives the request signal from the terminal. Means is provided for reversing the transmission right regarding communication of the terminal when the communication occurs.

【０００６】[0006]

【作用】本発明によれば、端末からの送信権要求信号に
より、基地局は送信権を反転させ、端末においても送信
権を制御することを可能とする。According to the present invention, the base station inverts the transmission right in response to a transmission right request signal from the terminal, making it possible for the terminal to control the transmission right as well.

【０００７】[0007]

【実施例】次に、本発明について図面を参照して説明す
る。図１は本発明の一実施例である。同図（ａ）は基地
局（ネットワーク）Ｂ１と端末Ｍ１のプロトコル、同図
（ｂ）は中央制御局Ｃ１と通信相手Ｕ１を含めたシーケ
ンスフローである。ここで、端末Ｍ１には通信に関する
送信権を取得するための要求信号を送信する手段が設け
られている。又、基地局Ｂ１には端末Ｍ１から送信権を
取得するための要求信号を受けた時に端末Ｍ１の通信に
関する送信権を反転する手段が設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 shows an embodiment of the present invention. FIG. 4(a) shows a protocol between base station (network) B1 and terminal M1, and FIG. 2(b) shows a sequence flow including central control station C1 and communication partner U1. Here, the terminal M1 is provided with means for transmitting a request signal for acquiring transmission rights regarding communication. Furthermore, the base station B1 is provided with means for reversing the transmission right regarding the communication of the terminal M1 when receiving a request signal for acquiring the transmission right from the terminal M1.

【０００８】このような構成において、同図（ａ）の前
半では従来例に示した下りデータ通信中のフローと同じ
である。後半では端末Ｍ１が下りデータｎ＋１を受信後
、下りデータｎ＋２を待っているとき、端末Ｍ１が基地
局Ｂ１に対し送信権反転要求を送信しているところであ
る。この送信権反転要求を行うと、基地局Ｂ１は端末に
対し送信権を与えるＰ＃ｎを送信し、端末はこの通信の
送信権をとることができる。In such a configuration, the flow in the first half of FIG. 4A is the same as the flow during downlink data communication shown in the conventional example. In the second half, when terminal M1 is waiting for downlink data n+2 after receiving downlink data n+1, terminal M1 is transmitting a transmission right reversal request to base station B1. When this transmission right reversal request is made, the base station B1 transmits P#n that grants the transmission right to the terminal, and the terminal can take the transmission right for this communication.

【０００９】同図（ｂ）では、端末Ｍ１からの送信権反
転要求を基地局Ｂ１、中央制御局Ｃ１を経由し、通信相
手Ｕ１に送る。通信相手Ｕ１はそれを認識し、反転確認
を送る。中央制御局Ｃ１、基地局Ｂ１はその反転確認を
受けることにより、通信の送信権が反転したとし、基地
局Ｂ１は端末Ｍ１に対し、Ｐ＃ｎを送り上りデータの送
信勧誘を行う。In FIG. 2B, a transmission right reversal request from terminal M1 is sent to communication partner U1 via base station B1 and central control station C1. The communication partner U1 recognizes it and sends a reversal confirmation. Upon receiving the reversal confirmation, the central control station C1 and the base station B1 assume that the transmission right for communication has been reversed, and the base station B1 sends P#n to the terminal M1 and invites it to transmit data.

【００１０】0010

【発明の効果】以上説明したように本発明は、送信権を
基地局のみで制御するだけでなく、端末からも送信権を
反転要求できるようにすることにより、何らかの形で通
信相手からデータが来ないときに自分から通信の送信権
をとり、通信の終了等ができる。又、通信としても両通
信相手間で送信権の授受を行うことができるという効果
がある。[Effects of the Invention] As explained above, the present invention not only controls the transmission right only by the base station, but also allows the terminal to request the reversal of the transmission right. If the person does not come, you can take the right to send the communication and end the communication. Further, in terms of communication, there is an effect that transmission rights can be given and received between both communicating parties.

【図面の簡単な説明】[Brief explanation of the drawing]

【図１】本発明方式のプロトコル及びシーケンスフロー
を示す図である。FIG. 1 is a diagram showing a protocol and sequence flow of the method of the present invention.

【図２】無線パケット伝送方式のポーリング方式の示す
図である。FIG. 2 is a diagram showing a polling method of a wireless packet transmission method.

【図３】従来方式のプロトコル及びシーケンスフローを
示す図である。FIG. 3 is a diagram showing a conventional protocol and sequence flow.

【符号の説明】[Explanation of symbols]

Ｂ１　　基地局 Ｍ１　　端末 Ｕ１　　通信相手 Ｃ１　　中央制御局 B1 Base station M1 Terminal U1 Communication partner C1 Central control station

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】　　端末と基地局とが半二重通信を行い、
前記基地局が前記端末との通信に関する送信権を制御し
ている無線パケット通信システムにおいて、前記端末に
は通信に関する送信権を取得するための要求信号を送信
する手段を有し、前記基地局は端末から前記要求信号を
受けた時に前記端末の通信に関する送信権を反転する手
段を有することを特徴とする無線データ伝送方式。[Claim 1] A terminal and a base station perform half-duplex communication,
In a wireless packet communication system in which the base station controls transmission rights regarding communication with the terminal, the terminal has means for transmitting a request signal for acquiring transmission rights regarding communication, and the base station A wireless data transmission system, comprising means for reversing transmission rights regarding communication of the terminal when receiving the request signal from the terminal.
JP3155342A 1991-05-31 1991-05-31 Radio data transmission system Pending JPH04355533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3155342A JPH04355533A (en) 1991-05-31 1991-05-31 Radio data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3155342A JPH04355533A (en) 1991-05-31 1991-05-31 Radio data transmission system

Publications (1)

Publication Number Publication Date
JPH04355533A true JPH04355533A (en) 1992-12-09

Family

ID=15603797

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3155342A Pending JPH04355533A (en) 1991-05-31 1991-05-31 Radio data transmission system

Country Status (1)

Country Link
JP (1) JPH04355533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10236950B2 (en) 2009-02-27 2019-03-19 Qualcomm Incorporated Video transmission over SDMA

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02295250A (en) * 1989-05-09 1990-12-06 Nec Corp Packet data transmission system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02295250A (en) * 1989-05-09 1990-12-06 Nec Corp Packet data transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10236950B2 (en) 2009-02-27 2019-03-19 Qualcomm Incorporated Video transmission over SDMA

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