JPH06103883B2 - Wireless packet communication system - Google Patents
Wireless packet communication systemInfo
- Publication number
- JPH06103883B2 JPH06103883B2 JP63029066A JP2906688A JPH06103883B2 JP H06103883 B2 JPH06103883 B2 JP H06103883B2 JP 63029066 A JP63029066 A JP 63029066A JP 2906688 A JP2906688 A JP 2906688A JP H06103883 B2 JPH06103883 B2 JP H06103883B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- base station
- communication
- mobile station
- communicating
- 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.)
- Expired - Fee Related
Links
Landscapes
- Small-Scale Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は無線パケット通信方式に関し、特に移動局のゾ
ーン間移動の際スムーズに通信できる無線パケット通信
方式に関する。TECHNICAL FIELD The present invention relates to a wireless packet communication system, and more particularly to a wireless packet communication system that enables smooth communication when a mobile station moves between zones.
一般に無線パケット通信システムにおいては、第２図で
示されるように、各基地局Bn（ｎ＝自然数）がある一定
のゾーンを管理し、各基地局の上位には全システムを管
理する集中管理局C1があるという構成になっている。第
３図においては、情報の伝送の単位として１回の伝送量
をパケット、ｎ個のパケットが集まってブロックという
単位を構成するものとする。そして基地局Bnと集中管理
局C1の情報の伝送単位はブロックとする。いま、移動局
M1は基地局B1のゾーンにて基地局B1にパケット伝送を行
なっていたとする。Generally, in a wireless packet communication system, as shown in FIG. 2, each base station Bn (n = natural number) manages a certain zone, and a centralized management station that manages the entire system above each base station. It is configured to have C1. In FIG. 3, it is assumed that a unit of transmission of information is a packet, and a unit of n packets is a block. The unit of transmission of information between the base station Bn and the central control station C1 is a block. Mobile station
It is assumed that M1 is performing packet transmission to base station B1 in the zone of base station B1.
移動局M1が、基地局B2側に移動しながら基地局B1と通信
をし、第ｍブロックの第ｎ−１パケットまでの伝送が終
了した時点で基地局B2のゾーンに移ったため基地局B1と
の通信ができなくってきたとする。しかし、基地局B1は
ある一定時間Tn内は、まだ基地局M1と通信をしようとし
ている。移動局M1は基地局B1との通信が出きなくなった
ため、隣接ゾーンとの通信を行なおうとする。しかし、
次の２つの欠点が生じる。The mobile station M1 communicates with the base station B1 while moving to the side of the base station B2, and when the transmission up to the (n-1) th packet of the m-th block is completed, the mobile station M1 moves to the zone of the base station B2. Suppose that you can no longer communicate. However, the base station B1 is still trying to communicate with the base station M1 within a certain time Tn. Since the mobile station M1 cannot communicate with the base station B1, it tries to communicate with the adjacent zone. But,
Two drawbacks arise:
（１） 基地局B2にて移動局M1の再度発呼処理をすると
基地局B1との通信時間Tn内のときは２重発呼としてM1か
らの再発呼は不正侵入防止のため受けつけられない。(1) When the mobile station M1 performs the call origination process again at the base station B2, a re-initiated call from M1 cannot be accepted as a double call within the communication time Tn with the base station B1 in order to prevent unauthorized intrusion.
（２） （１）のため、時間Tn以内の発呼は受けつけら
れずに、仮に時間Tn以降に移動局M1が基地局B2と通信が
成功したとしても基地局B1との通信は時間TnのTime ou
tで終了しているので、移動局M2は今まで基地局B1とす
でに通信した第ｍブロック第ｎ−１パケットまでは再送
しなければならない。そのため、第３図で示す様にデー
タのスループットの劣下となる。すなわち、データに伝
送時間が長くなる。(2) Due to (1), the call within the time Tn is not accepted, and even if the mobile station M1 succeeds in communicating with the base station B2 after the time Tn, the communication with the base station B1 is continued in the time Tn. Time ou
Since the process ends at t, the mobile station M2 has to retransmit up to the (n-1) th packet of the m-th block which has already communicated with the base station B1. Therefore, as shown in FIG. 3, the data throughput is deteriorated. That is, the transmission time for data becomes long.
本発明によれば集中管理局と、割り当てられた各サービ
スゾーンを管理する複数の基地局と、前記各サービスゾ
ーンを移動する移動局とを有し、基地局を通し通信をす
る無線パケット通信システムにおいて、 通信中の移動局が第１の基地局のサービスゾーンから第
２の基地局のサービスゾーンに移動した場合、第２の基
地局に再発呼要求を送信する第１の手段と、通信する順
序指示を受ける第２の手段と、指示を受けた時に指示さ
れた順番のパケットを通信する第３の手段とを有する移
動局と；集中管理局から第１の基地局と通信をしていた
移動局が第２の基地局と通信する要求がある事を知る第
４の手段と、要求を知ったとき第一の基地局と通信して
いた内容を集中管理局へ伝える第５の手段と、集中管理
局から第１の基地局が通信していた通信内容を受ける第
６の手段と、通信内容を受けた時該当する移動局に通信
内容を送る第７の手段とを有する基地局と；今まで通信
していた移動局が第２の基地局へ再発呼要求を出した事
を知る第８の手段と、再発呼を知ったとき今まで通信し
ていた第１の基地局に対し移動局との通信内容をたずね
る第９の手段と、通信内容を第１の基地局から受ける第
10の手段と、第２の基地局に通信内容を教える手段とを
有する集中管理局とで構成されることを特徴とする無線
パケット通信方式が得られる。According to the present invention, a wireless packet communication system having a centralized management station, a plurality of base stations managing each assigned service zone, and a mobile station moving in each service zone, and communicating through the base station In, when the communicating mobile station moves from the service zone of the first base station to the service zone of the second base station, the mobile station communicates with the first means for transmitting a recall request to the second base station. A mobile station having a second means for receiving the order instruction and a third means for communicating packets in the order instructed when the instruction is received; the central management station communicating with the first base station Fourth means for knowing that the mobile station has a request to communicate with the second base station, and fifth means for notifying the central management station of the contents of communication with the first base station when the request is known. , The first base station is communicating from the central control station A base station having a sixth means for receiving the communication content and a seventh means for transmitting the communication content to a corresponding mobile station when the communication content is received; Eighth means for knowing that a recall request is issued to the station, and Ninth means for asking the first base station, which had been communicating until when the recall call was known, about the contents of communication with the mobile station, First to receive communication contents from the first base station
A wireless packet communication system is obtained which comprises a centralized control station having 10 means and means for teaching the communication contents to the second base station.
本発明について図面を参照して説明する。第１図は本発
明の無線パケット通信方式のシーケンスフローを示す図
である。M1は移動局、B1,B2は基地局、C1は集中管理局
である。今、移動局M1は基地局B1から基地局B2のゾーン
に移動しながら基地局B1と通信をしていて、第ｍブロッ
クのｎ−１パケットまで送信終了した時に、移動局M1が
基地局B2のゾーンに移り基地局B1からの信号が受けられ
なくなったとする。この時移動局M1は基地局B2に対して
再発呼要求をする。これを受けた基地局B2は集中管理局
C1に移動局M1が再発呼要求を出して来た事を知らせる。
集中管理局C1は再発呼要求という事から、その前まで他
の基地局B1と移動局M1が通信をしていたことを知る。こ
のとき、集中管理局C1は前通信基地局B1に対し移動局M1
とどこまで（第何番ブロックまで）通信をしていたかを
聞くと同時に、基地局B1と移動局M1の通信を切るように
指示する（再発呼指示）。基地局B1は再発呼指示を受け
ると、基地局B1と移動局M1の通信内容を集中管理局C1に
教え（前通信情報）移動局M1との通信をアイドル（Idl
e）状態にする。集中管理局C1は基地局B1より前通信情
報を受けると、基地局B2に次はどのブロックから受信す
べきかの情報を含んだ再発呼応答を伝える。基地局B2は
集中管理局C1からの再発呼応答をうけると端末M1にどの
ブロックから送信すべきかという項を含んだ再発呼応答
を送り、再発呼処理を終了する。移動局M1は再発呼応答
を受けると、その中に示されているブロックからの送信
を行なう。The present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a sequence flow of the wireless packet communication system of the present invention. M1 is a mobile station, B1 and B2 are base stations, and C1 is a central control station. Now, the mobile station M1 is communicating with the base station B1 while moving from the base station B1 to the zone of the base station B2, and when the transmission of up to the n−1th packet of the m-th block is completed, the mobile station M1 receives the base station B2. It is assumed that the signal from the base station B1 cannot be received after moving to the zone. At this time, the mobile station M1 makes a re-call request to the base station B2. Base station B2 that received this is the central control station
Notify C1 that mobile station M1 has issued a recall request.
The centralized control station C1 knows that the other base station B1 and the mobile station M1 have been communicating with each other from the fact that the call is requested again. At this time, the central control station C1 moves the mobile station M1 to the previous communication base station B1.
At the same time asking how far (up to what number block) the communication was made, and at the same time, instructing to disconnect the communication between the base station B1 and the mobile station M1 (recall instruction). When the base station B1 receives the recalling instruction, it informs the central management station C1 of the communication contents of the base station B1 and the mobile station M1 (previous communication information) and idles the communication with the mobile station M1 (Idl
e) Put in the state. Upon receiving the previous communication information from the base station B1, the centralized control station C1 sends a recalling response including information about which block should be received next to the base station B2. Upon receiving the recalling response from the centralized control station C1, the base station B2 sends a recalling response including a term from which block to transmit to the terminal M1, and terminates the recalling process. When the mobile station M1 receives the recalling response, the mobile station M1 transmits from the block shown therein.
以上説明したように本発明は、移動局が第１の基地局の
サービスゾーンから第２の基地局のサービスゾーンへ移
動する場合、移動局から第２の基地局に再発呼要求を送
り第２の基地局から集中管理局へその事を伝える。集中
管理局は今まで通信をしていた第１の基地局との間で通
信の切断を指示すると共に通信の受信情報をうける。そ
して、集中管理局はその情報を受けて第２の基地局へ受
信情報を教えると共に、第２の基地局が移動局にその事
を伝える。As described above, according to the present invention, when the mobile station moves from the service zone of the first base station to the service zone of the second base station, the mobile station sends a recall call request to the second base station. Tell the central management station about it. The central control station instructs the disconnection of the communication with the first base station with which the communication has been performed and receives the reception information of the communication. Then, the central control station receives the information and notifies the second base station of the reception information, and at the same time, the second base station notifies the mobile station of the fact.
以上説明したように本発明によれば、無線パケットデー
タ通信において、ゾーン間移動をした時にスムーズに基
地局の間と通信が再開できると共に、第１の基地局と受
信情報をやりとりすることにより既に終了しているブロ
ックを知り、次のブロックからの処理を行なうことがで
きる。その結果システム内のデータの再送が減りシステ
ム全体でのデータのスループットが上がる。As described above, according to the present invention, in wireless packet data communication, communication between base stations can be smoothly resumed when moving between zones, and by already exchanging received information with the first base station, Knowing which block has been completed, it is possible to perform processing from the next block. As a result, the retransmission of data in the system is reduced and the data throughput of the entire system is increased.
第１図は本発明の無線パケット通信方式のシーケンスフ
ローを示す図、第２図は無線パケット伝送システムの構
成を示す図、第３図は伝送単位の構成で、パケットがｎ
ケ集まると１ブロックとなることを示す図、第４図は従
来の無線パケット通信方式においてゾーン間移動をした
時のシーケンスフローを示す図である。 M1……移動局、B1,B2……基地局、C1……集中管理局、T
n……通信タイム、ｍ……ブロック数、ｎ……パケッ
ト。FIG. 1 is a diagram showing a sequence flow of a wireless packet communication system of the present invention, FIG. 2 is a diagram showing a configuration of a wireless packet transmission system, and FIG.
FIG. 4 is a diagram showing that one block is collected, and FIG. 4 is a diagram showing a sequence flow when moving between zones in the conventional wireless packet communication system. M1 ... Mobile station, B1, B2 ... Base station, C1 ... Centralized control station, T
n ... communication time, m ... number of blocks, n ... packets.
Claims (1)
ゾーンを管理する複数の基地局と、前記各サービスゾー
ンを移動する移動局とを有し、前記基地局を通し通信を
する無線パケット通信システムにおいて、 通信中の前記移動局が第１の基地局のサービスゾーンか
ら第２の基地局のサービスゾーンに移動した場合、前記
第２の基地局に再発呼要求を送信する第１の手段と、通
信する順序指示をうける第２の手段と、前記指示を受け
た時に指示された順番のパケットを通信する第３の手段
とを有する前記移動局と； 前記集中管理局から前記第１の基地局と通信をしていた
前記移動局が前記第２の基地局と通信する要求がある事
を知る第４の手段と、前記要求を知ったとき前記第一の
基地局と通信していた内容を前記集中管理局へ伝える第
５の手段と、前記集中管理局から前記第１の基地局が通
信していた通信内容を受ける第６の手段と、前記通信内
容を受けた時該当する前記移動局に前記通信内容を送る
第７の手段とを有する前記基地局と； 今まで通信していた前記移動局が前記第２の基地局へ再
発呼要求を出した事を知る第８の手段と、前記再発呼を
知ったとき今まで通信していた前記第１の基地局に対し
前記移動局との前記通信内容をたずねる第９の手段と、
前記通信内容を前記第１の基地局から受ける第10の手段
と、前記第２の基地局に前記通信内容を教える手段とを
有する前記集中管理局とで構成されることを特徴とする
無線パケット通信方式。1. A wireless packet communication having a centralized management station, a plurality of base stations managing each assigned service zone, and a mobile station moving in each service zone, and performing communication through the base station. In the system, first means for transmitting a recalling request to the second base station when the mobile station in communication moves from the service zone of the first base station to the service zone of the second base station. A mobile station having a second means for receiving a communication order instruction, and a third means for communicating a packet in the indicated order when the instruction is received; and the central management station to the first base. Fourth means for knowing that the mobile station communicating with the station has a request to communicate with the second base station, and contents with which the mobile station was communicating with the first base station when the request was known. No. 5 to the central control station Means, sixth means for receiving the communication content from the centralized control station with which the first base station was communicating, and seventh means for transmitting the communication content to the corresponding mobile station when the communication content is received. Means for knowing that the mobile station, which has been communicating up to now, has issued a recall request to the second base station, and when the recall call is known, Ninth means for asking the first base station with which the mobile station was in communication about the contents of the communication with the mobile station;
A radio packet, comprising: a central management station having a tenth means for receiving the communication content from the first base station and a means for teaching the communication content to the second base station. Communication method.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63029066A JPH06103883B2 (en) | 1988-02-10 | 1988-02-10 | Wireless packet communication system |
| EP89102236A EP0328100B1 (en) | 1988-02-10 | 1989-02-09 | High throughput communication method and system for a digital mobile station when crossing a zone boundary during a session |
| CA000590551A CA1301845C (en) | 1988-02-10 | 1989-02-09 | High throughput communication method and system for a digital mobile station when crossing a zone boundary during a session |
| US07/308,276 US4989204A (en) | 1988-02-10 | 1989-02-09 | High throughput communication method and system for a digital mobile station when crossing a zone boundary during a session |
| DE68923102T DE68923102T2 (en) | 1988-02-10 | 1989-02-09 | High throughput communication method and system for a digital mobile station crossing a zone boundary during a connection. |
| AU29855/89A AU616858B2 (en) | 1988-02-10 | 1989-02-10 | High throughout communication method and system for a digital mobile station when crossing a zone boundary during a session |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63029066A JPH06103883B2 (en) | 1988-02-10 | 1988-02-10 | Wireless packet communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01204545A JPH01204545A (en) | 1989-08-17 |
| JPH06103883B2 true JPH06103883B2 (en) | 1994-12-14 |
Family
ID=12265991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63029066A Expired - Fee Related JPH06103883B2 (en) | 1988-02-10 | 1988-02-10 | Wireless packet communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06103883B2 (en) |
-
1988
- 1988-02-10 JP JP63029066A patent/JPH06103883B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01204545A (en) | 1989-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |