JPS6277733A - Packet length converting system - Google Patents
Packet length converting systemInfo
- Publication number
- JPS6277733A JPS6277733A JP60218244A JP21824485A JPS6277733A JP S6277733 A JPS6277733 A JP S6277733A JP 60218244 A JP60218244 A JP 60218244A JP 21824485 A JP21824485 A JP 21824485A JP S6277733 A JPS6277733 A JP S6277733A
- Authority
- JP
- Japan
- Prior art keywords
- packet
- line
- packet length
- exchange
- subscriber
- 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
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はパケット長変換方式に関し、特に伝送路品質が
悪いパケット交換網に適用しうるパケット交換機のパケ
ット長!換方式に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a packet length conversion method, and in particular to a packet length conversion method for a packet switch that can be applied to a packet switching network with poor transmission path quality. Regarding the conversion method.
従来、パケット交換機は、システムデータとして予め1
パケツトのデータサイズを固定設定するように構成され
ていた。Conventionally, packet switching equipment stores 1 in advance as system data.
It was configured to set a fixed packet data size.
〔発明が解決しようとする問題点]
上述した従来のパケット交換機はパケット長(データ長
)が固定設定となっているので、伝送路品質が悪い回線
を使用した場合、パケット(データ)の中にビット誤り
率が多く発生しパケット(データ)の再送が多発し、伝
送効率が低下するという欠点がある。[Problems to be solved by the invention] The conventional packet switching equipment described above has a fixed packet length (data length), so if a line with poor transmission quality is used, some packets (data) may The drawback is that a high bit error rate occurs, packets (data) are frequently retransmitted, and transmission efficiency decreases.
本発明は加入者端末を収容するパケット交換機が加入者
回線及び中継回線の伝送路品質により、接続されている
加入者端末及び交換機に対し、再送パケット(データ)
要求回数をカウントし、カウント回数が一定値以上にな
った時に自動的にパケット長(データ長)を変更して送
出することにより、上記欠点を解決し、パケット(デー
タ)の再送が少なく伝送効率の高い通信が出来るように
した。The present invention allows a packet switching equipment that accommodates subscriber terminals to send retransmitted packets (data) to connected subscriber terminals and switching equipment based on the transmission path quality of subscriber lines and trunk lines.
By counting the number of requests and automatically changing the packet length (data length) and sending it out when the number of requests exceeds a certain value, the above disadvantages are solved, reducing the number of retransmissions of packets (data) and improving transmission efficiency. This enabled high-speed communication.
次に図面を用いて本発明の一実施例について説明する。 Next, one embodiment of the present invention will be described using the drawings.
館1図は本発明のパケット長変換方式の実施例を示すプ
シツク図である。パケット交換機30は加入者回線20
及び中継回線4を介して、加入者端末10及びパケット
交換機31と通信を行っている時、回線制御装置50.
5nは加入者端末10えたことにより、加入者回線20
及び中継回線4の伝送路品質が悪いと判断し、入力デー
タバス60を介し中央制御装置i#7にパケット長(デ
ータ長)変更信号を送信する。中央制御装置7はパケッ
ト長(データ長)変更信号を受信すると回線制御装置5
0 # 5nを管理しているエリアのパケット(データ
)サイズ登録エリアを伝送路品質に見合ったパケット長
(データ長)サイズに設定し、加入者端末10及びパケ
ット交換機31に回線制御装置50及び5nを介して通
知し、以後の通信を、変更したパケット長(データ長)
で行い、伝送効率を高めることを可能とする。Figure 1 is a schematic diagram showing an embodiment of the packet length conversion method of the present invention. The packet switch 30 is the subscriber line 20
When communicating with the subscriber terminal 10 and the packet switch 31 via the relay line 4, the line control device 50.
5n is the subscriber line 20 due to the addition of the subscriber terminal 10.
It determines that the transmission path quality of the relay line 4 is poor, and transmits a packet length (data length) change signal to the central control unit i#7 via the input data bus 60. When the central controller 7 receives the packet length (data length) change signal, the central controller 7 changes the line controller 5 to
0 # Set the packet (data) size registration area of the area managing 5n to a packet length (data length) size commensurate with the transmission path quality, and set the line control device 50 and 5n to the subscriber terminal 10 and packet switch 31. Notify the changed packet length (data length) for subsequent communication via
This makes it possible to increase transmission efficiency.
以上説明したように本発明は、加入者端末を収容するパ
ケット交換機が加入者回線及び中継回線の伝送路品質に
よって自動的にパケット長(データ長)を変更すること
によって、パケット(データ)の再送が少なく伝送効率
を高める効果がある。As explained above, the present invention enables packet switching equipment that accommodates subscriber terminals to retransmit packets (data) by automatically changing the packet length (data length) depending on the transmission path quality of subscriber lines and trunk lines. This has the effect of increasing transmission efficiency.
第1図は本発明の一実施例のブロック図である。
10〜1n・・・・・・加入者端末、20〜2n・・・
・・・加入者回ill、30.31・・・・・・パケッ
ト交換機、4・・・・・・中継回線、50〜5n・・・
・・・回線制御装置、60・・・・・・入力データパス
、61・・・・・・出力データバス、7・・・・・・中
央制御装置、8・・・・・・メモリ。FIG. 1 is a block diagram of one embodiment of the present invention. 10~1n...Subscriber terminal, 20~2n...
...Subscriber line ill, 30.31...Packet switch, 4...Relay line, 50-5n...
... Line control device, 60 ... Input data path, 61 ... Output data bus, 7 ... Central control device, 8 ... Memory.
Claims (1)
要求回数をカウントし、一定値以上になった時に自動的
にパケット長を変更して送出することにより加入者回線
及び中継回線は伝送路品質に見合ったパケット長としパ
ケットの再送を少なく伝送効率を高めることを特徴とす
るパケット長変換方式。By counting the number of retransmission packet requests based on the transmission quality of the subscriber line and trunk line, and automatically changing the packet length and sending it out when it exceeds a certain value, the subscriber line and trunk line match the quality of the transmission line. A packet length conversion method that reduces packet retransmission and increases transmission efficiency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60218244A JPS6277733A (en) | 1985-09-30 | 1985-09-30 | Packet length converting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60218244A JPS6277733A (en) | 1985-09-30 | 1985-09-30 | Packet length converting system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6277733A true JPS6277733A (en) | 1987-04-09 |
Family
ID=16716848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60218244A Pending JPS6277733A (en) | 1985-09-30 | 1985-09-30 | Packet length converting system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6277733A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6471360A (en) * | 1987-09-11 | 1989-03-16 | Nec Corp | Packet multiplex division transmission system |
JPH01143532A (en) * | 1987-11-30 | 1989-06-06 | Toshiba Corp | Network system |
JPH01259651A (en) * | 1988-04-08 | 1989-10-17 | Fujitsu Ltd | Communication system utilizing packet exchange network |
JPH04220839A (en) * | 1990-12-21 | 1992-08-11 | Nippon Telegr & Teleph Corp <Ntt> | Packet transmitter |
JPH05336116A (en) * | 1992-05-29 | 1993-12-17 | Victor Co Of Japan Ltd | Optical radio data transmitting system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5484905A (en) * | 1977-12-20 | 1979-07-06 | Fujitsu Ltd | Storage exchanging system |
-
1985
- 1985-09-30 JP JP60218244A patent/JPS6277733A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5484905A (en) * | 1977-12-20 | 1979-07-06 | Fujitsu Ltd | Storage exchanging system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6471360A (en) * | 1987-09-11 | 1989-03-16 | Nec Corp | Packet multiplex division transmission system |
JPH01143532A (en) * | 1987-11-30 | 1989-06-06 | Toshiba Corp | Network system |
JPH01259651A (en) * | 1988-04-08 | 1989-10-17 | Fujitsu Ltd | Communication system utilizing packet exchange network |
JPH04220839A (en) * | 1990-12-21 | 1992-08-11 | Nippon Telegr & Teleph Corp <Ntt> | Packet transmitter |
JPH05336116A (en) * | 1992-05-29 | 1993-12-17 | Victor Co Of Japan Ltd | Optical radio data transmitting system |
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