WIRELESS COMMUNICATION SYSTEM

To reduce power consumption and achieve low-latency operation while satisfying expected communication functions.SOLUTION: In a wireless communication system in a network in which data frames between two or more nodes arranged with a CS 2 as a root are transmitted and received based on time division...

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Hauptverfasser: SAWADA HIROKAZU, IBUKA KAZUO, KUNITACHI TADAHIDE, MATSUI KENSUKE, KOJIMA FUMIHIDE, MATSUMURA TAKESHI, IKEDA KOTARO, KUROSE TAKUTO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To reduce power consumption and achieve low-latency operation while satisfying expected communication functions.SOLUTION: In a wireless communication system in a network in which data frames between two or more nodes arranged with a CS 2 as a root are transmitted and received based on time division multiple access (TDMA), each node 3 is assigned, in consecutive intermittent standby cycles, an active period in which the data frames can be transmitted and received and which is divided chronologically into early and late periods and a sleep period in which operation is suspended. The CS 2 allocates uplink data communication from the node 3 to the CS 2 and downlink data communication from the CS 2 to the node 3 to the early period and late period of the active period, respectively, according to the number of detected nodes.SELECTED DRAWING: Figure 4 【課題】期待される通信機能は満足しつつ、電力消費量の低減を図り、低遅延動作を実現する。【解決手段】CS2を根として2以上に亘り配置されたノード間のデータフレームの送受信を時分割多元接続(TDMA)に基づいて行うネットワークにおける無線通信システムにおいて、各ノード3は、連続する間欠待受周期において、データフレームを送受信可能とすると共に、時系列的に前期と後期に分割されたアクティブ期間と、動作を休止するスリープ期間とがそれぞれ割り当てられ、CS2は、検出したノードの数に応じて、上記アクティブ期間の前期及び後期に対して、ノード3からCS2への上りデータ通信とCS2からノード3への下りデータ通信を各々割り当てる。【選択図】図4