JPH0380716A - Satellite communication control system - Google Patents
Satellite communication control systemInfo
- Publication number
- JPH0380716A JPH0380716A JP21890489A JP21890489A JPH0380716A JP H0380716 A JPH0380716 A JP H0380716A JP 21890489 A JP21890489 A JP 21890489A JP 21890489 A JP21890489 A JP 21890489A JP H0380716 A JPH0380716 A JP H0380716A
- Authority
- JP
- Japan
- Prior art keywords
- station
- slave station
- slave
- burst
- frequency
- 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
- 238000004891 communication Methods 0.000 title claims description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Radio Relay Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、基準局及び複数の従局からなる衛星通信シス
テムにおいて、従局で使用する衛星回線の周波数割当・
解除を行う衛星通信制御方式に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a satellite communication system consisting of a reference station and a plurality of slave stations.
This invention relates to a satellite communication control method for canceling.
従来、この種の衛星回線用周波数割当・解除は、従局に
よる周波数割当要求データの送信はランダムに行なうか
、または予め各従局の送信タイミングを決めておく方式
となっていた。Conventionally, in this type of satellite line frequency allocation/cancellation, frequency allocation request data by slave stations is transmitted randomly, or the transmission timing of each slave station is determined in advance.
上述した従来の衛星回線用周波数割当・解除は、従局に
よる周波数割当要求データの送信をランダムに行なう方
式をとっているので、スループットが低かったり、また
、各従局の送信タイミングを予め決めている方式では、
ランダム方式に比べてスルーブツトは上がるものの衛星
回線使用効率がのびないという欠点があった。The conventional satellite line frequency allocation/cancellation described above uses a method in which slave stations randomly transmit frequency allocation request data, resulting in low throughput, and a method in which the transmission timing of each slave station is determined in advance. So,
Although it increased throughput compared to the random method, it had the disadvantage of not increasing the efficiency of satellite line usage.
本発明の衛星通信制御方式は、使用する周波数の割当・
解除及びシステム全体の運用状態を管理する基準局及び
周波数の割当を受け実際の通信を行なう複数の従局から
なる衛星通信において、前記基準局にて前記各従局の衛
星回線の使用頻度の統計をとり、前記使用頻度の高い従
局に周波数割当要求データ送信スロットを割当てる統計
データ処理部を有している。The satellite communication control method of the present invention is characterized by the frequency allocation and
In satellite communication, which consists of a reference station that manages cancellation and the operational status of the entire system, and a plurality of slave stations that receive frequency assignment and perform actual communication, the reference station collects statistics on the usage frequency of the satellite line of each of the slave stations, and It has a statistical data processing unit that allocates frequency allocation request data transmission slots to frequently used slave stations.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例のシステム構成図であり、第
２図〜第４図は基準局・従局が送信する回線制御情報の
衛星上でのタイミングを示す説明図である。FIG. 1 is a system configuration diagram of an embodiment of the present invention, and FIGS. 2 to 4 are explanatory diagrams showing the timing on the satellite of the line control information transmitted by the reference station and slave station.
第１図において、１は通信衛星、２は基準局空中線部、
３は基準局無線部、４は基準局回線制御部、５は統計デ
ータ処理部、６は緊急時操作部、７は回線制御回線、１
０．２０〜ＮＯは従局空中線部、１１．２１〜Ｎ１は従
局無線部、１２，２２〜Ｎ２は従局回線制御部、１３．
２３〜Ｎ３は従局端末部、１００は基準局ＴＤＭバース
ト、１０１は従局ランダムアクセスバースト、１１０〜
１１２は予約割当情報を含む基準局ＴＤＭバースト、１
２０〜１２２は従局予約バースト、２１０〜２１２は緊
急時予約割当情報を含む基準局ＴＤＭバースト、２２０
〜２２２は緊急時従局予約バーストとする。In Figure 1, 1 is a communication satellite, 2 is a reference station antenna section,
3 is a reference station radio section, 4 is a reference station line control section, 5 is a statistical data processing section, 6 is an emergency operation section, 7 is a line control line, 1
0.20 to NO are slave station antenna sections, 11.21 to N1 are slave station radio sections, 12, 22 to N2 are slave station line control sections, 13.
23 to N3 are slave station terminal units, 100 is a reference station TDM burst, 101 is a slave station random access burst, 110 to
112 is a reference station TDM burst containing reservation allocation information, 1
20 to 122 are slave station reservation bursts, 210 to 212 are reference station TDM bursts including emergency reservation allocation information, 220
.about.222 is an emergency subordinate station reservation burst.
本システムでは、基準局と従局は同一の衛星回線を使用
する。In this system, the reference station and slave stations use the same satellite line.
本システムの運用開始直後は、各従局の衛星回線使用頻
度の統計データが少ないため、第２図に示すように、各
従局はランダムアクセス方式の回線制御を行う。この第
１ステツプの中で基準局統計データ処理部５は各従局の
衛星回線使用頻度を計数し、一定期間に渡る統計情報を
作成し、使用頻度の高い従局番号を基準局回線制御部４
に送る。基準局回線制御部４は従局番号を含んだ予約割
当情報を第３図に示すフォーマットで送信する。従局回
線制御部１２等は基準局ＴＤＭバーストの中に自局従局
番号が含まれているかを確認し、自局が周波数割当要求
等の回線制御情報を送信するときには、自局従局番号を
含む基準局ＴＤＭバーストの次のバーストに位置するよ
う送信制御を行う。いずれの基準局ＴＤＭバーストの中
にも自局従局番号が含まれていない従局はランダムアク
セスバースト位置に自局の回線制御情報を送信する。Immediately after the start of operation of this system, since there is little statistical data on the frequency of use of satellite lines by each slave station, each slave station performs line control using a random access method, as shown in FIG. In this first step, the base station statistical data processing unit 5 counts the satellite line usage frequency of each slave station, creates statistical information over a certain period, and assigns frequently used slave station numbers to the base station line control unit 5.
send to The reference station line control unit 4 transmits reservation assignment information including the slave station number in the format shown in FIG. The slave station line control unit 12 and the like check whether the base station slave station number is included in the base station TDM burst, and when the base station transmits line control information such as a frequency allocation request, the slave station TDM burst that includes the base station slave station number is Transmission control is performed so that the position is in the next burst. A slave station whose slave station number is not included in any of the reference station TDM bursts transmits its own line control information to the random access burst position.
本システムの運用の中で、特定の従局に対し優先的に回
線割当を行う緊急運用が必要になった場合には、第４図
に示すフォーマットのバースト送信となる。即ち、基準
局操作部６がら入力された従局番号を基準局回線制御部
４は基準局ＴＤＭバースト２１’Ｏ〜２１２として送信
する。基準局ＴＤＭバーストの中に自局従局番号が指定
された従局は緊急時従局予約バースト２２０〜２２２の
位置に自局バーストを送信する。During the operation of this system, if it becomes necessary for an emergency operation to allocate a line preferentially to a specific slave station, burst transmission in the format shown in FIG. 4 will be used. That is, the base station line control unit 4 transmits the slave station number inputted from the base station operation unit 6 as the base station TDM bursts 21'O to 212. The slave station whose own station slave station number is designated in the reference station TDM burst transmits its own station burst to the positions of the emergency slave station reserved bursts 220 to 222.
このように各従局の衛星回線使用頻度の統計をとり、使
用頻度の高い従局に周波数割当要求データ送信スロット
を優先的に割当てることにより、スルーブツトを向上さ
せ、がっそれ以外の従局にランダムアクセススロットを
割当てることと合せ、システム全体の回線使用効率を向
上させることができる。In this way, by collecting statistics on the satellite line usage frequency of each slave station and preferentially allocating frequency allocation request data transmission slots to frequently used slave stations, throughput is improved, while random access slots are allocated to other slave stations. In addition to allocating , the line usage efficiency of the entire system can be improved.
以上説明したように本発明は、各従局の衛星回線使用頻
度の統計をとり、使用頻度の高い従局に周波数割当要求
データ送信スロットを優先的に割当てることにより、ス
ループットを向上させ、かつそれ以外の従局にランダム
アクセススロットを割当てることと合せ、システム全体
の回線使用効率を向上させることができるという効果が
ある。As explained above, the present invention improves throughput by collecting statistics on the satellite line usage frequency of each slave station and preferentially allocating frequency allocation request data transmission slots to frequently used slave stations. In combination with allocating random access slots to slave stations, this has the effect of improving the line usage efficiency of the entire system.
第１図は本発明の一実施例のシステム構成図、第２図〜
第４図は基準局及び従局が送信する回線制御情報の衛星
上でのタイミングを示す説明図である。
１・・・通信衛星、２・・・基準局空中線部、３・・・
基準局無線部、４・・・基準局回線制御部、５・・・統
計データ処理部、６・・・緊急時操作部、７・・・回線
制御回線、１０．２０〜Ｎｏ・・・従局空中線部、１１
゜２１〜Ｎ１・・・従局無線部、１２．２２〜Ｎ２・・
・従局回線制御部、１３．２３〜Ｎ３・・・従局端末部
、１００・・・基準局ＴＤＭバースト、１０１・・・従
局うンダムアクセスバースト、１１０〜１１２・・・予
約割当情報を含む基準局ＴＤＭバースト、１２０〜１２
２・・・従局予約バースト、２１０〜２１２・・・緊急
時予約割当情報を含む基準局ＴＤＭバースト、２２０〜
２２２・・・緊急時従局予約バースト。Figure 1 is a system configuration diagram of an embodiment of the present invention, Figures 2-
FIG. 4 is an explanatory diagram showing the timing on the satellite of the line control information transmitted by the reference station and the slave station. 1... Communication satellite, 2... Reference station antenna section, 3...
Reference station radio section, 4... Reference station line control section, 5... Statistical data processing section, 6... Emergency operation section, 7... Line control line, 10.20~No.... Slave station antenna section , 11
゜21~N1...Slave station radio section, 12.22~N2...
・Slave station line control unit, 13.23 to N3...Slave station terminal unit, 100...Base station TDM burst, 101...Slave station undam access burst, 110 to 112...Base station TDM burst including reservation allocation information , 120-12
2...Slave station reservation burst, 210-212...Reference station TDM burst including emergency reservation allocation information, 220-
222...Emergency subordinate station reservation burst.
Claims (1)
態を管理する基準局及び周波数の割当を受け実際の通信
を行なう複数の従局からなる衛星通信において、前記基
準局にて前記各従局の衛星回線の使用頻度の統計をとり
、前記使用頻度の高い従局に周波数割当要求データ送信
スロットを割当てる統計データ処理部を有することを特
徴とする衛星通信制御方式。In satellite communication, which consists of a reference station that manages the allocation and release of frequencies to be used and the operational status of the entire system, and multiple slave stations that receive frequency assignment and perform actual communication, the reference station determines the frequency of use of the satellite line of each slave station. 1. A satellite communication control system, comprising: a statistical data processing unit that calculates statistics of the frequency allocation request data transmission slot to the frequently used slave station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21890489A JPH0380716A (en) | 1989-08-24 | 1989-08-24 | Satellite communication control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21890489A JPH0380716A (en) | 1989-08-24 | 1989-08-24 | Satellite communication control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380716A true JPH0380716A (en) | 1991-04-05 |
Family
ID=16727137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21890489A Pending JPH0380716A (en) | 1989-08-24 | 1989-08-24 | Satellite communication control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05153019A (en) * | 1991-11-27 | 1993-06-18 | Nec Corp | Microwave multidirectional multiplex communication system |
| US6603747B2 (en) | 1997-11-14 | 2003-08-05 | Nec Corporation | Communication control method and communication control apparatus |
-
1989
- 1989-08-24 JP JP21890489A patent/JPH0380716A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05153019A (en) * | 1991-11-27 | 1993-06-18 | Nec Corp | Microwave multidirectional multiplex communication system |
| US6603747B2 (en) | 1997-11-14 | 2003-08-05 | Nec Corporation | Communication control method and communication control apparatus |
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