SYSTEM AND METHOD FOR BIDIRECTIONAL RADIO COMMUNICATION
PROBLEM TO BE SOLVED: To provide a bidirectional radio communication system which enables bidirectional communication between a multicast transmission station and a multicast reception station, without using the number of lines to the possible extent in 1-to-N communication through a communication s...
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Patent |
Sprache: | eng ; jpn |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a bidirectional radio communication system which enables bidirectional communication between a multicast transmission station and a multicast reception station, without using the number of lines to the possible extent in 1-to-N communication through a communication satellite.SOLUTION: In the bidirectional radio communication system which configures a VSAT system capable of bidirectional radio communication through a communication satellite 3, Each 1-to-N communication line between one multicast transmission station 1 and N (N: a natural number) multicast reception stations 2A, 2B, 2C is allocated by a DAMA method. One line in the uplink direction from each multicast reception station 2A, 2B, 2C toward the multicast transmission station 1 is shared by performing communication in time division at slot timing ta, tb, tc allocated to each multicast reception station 2A, 2B, 2C for each slot period T1, which is preset as a transmission period, by using a frame conforming to a radio frame format of the TDMA method.SELECTED DRAWING: Figure 1
【課題】、通信衛星を介した1対N通信において、回線数を極力使わないで、マルチキャスト送信局・受信局間での双方向通信を可能にする双方向無線通信システムを提供する。【解決手段】通信衛星3を介した双方向無線通信が可能なVSATシステムを構成する双方向無線通信システムであって、1つのマルチキャスト送信局1とN(N:自然数)個のマルチキャスト受信局2A,2B,2Cとの間の1対N通信回線をDAMA方式によって割当てを行い、各マルチキャスト受信局2A,2B,2Cからマルチキャスト送信局1に向かう上り方向の1回線を、TDMA方式の無線フレームフォーマットに準拠したフレームを用いて、送信周期としてあらかじめ定めたスロット周期T1毎に各マルチキャスト受信局2A,2B,2Cそれぞれに割り当てられたスロットタイミングta,tb,tcにおいて時分割して通信を行うことにより、共用する。【選択図】 図1 |
---|