JP6368035B2 - データの同時通信のための無線通信方法及びこれを利用した無線通信端末 - Google Patents
データの同時通信のための無線通信方法及びこれを利用した無線通信端末 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Description
Claims (15)
- 無線通信端末であって、
無線信号を送受信する送受信部と、
前記無線通信端末の動作を制御するプロセッサと、を含み、
前記無線通信端末は、前記送受信部を介して特定チャネルの無線信号を受信し、
前記プロセッサは、
前記受信された無線信号のBSS(Basic Service Set)識別子情報を抽出し、
前記無線信号から、前記無線信号の伝送完了時点に関する情報を示す長さ情報を抽出し、前記無線信号のBSS識別子情報が前記無線通信端末のBSS識別子情報と相異なるときは、前記抽出された長さ情報に基づいて前記無線通信端末のデータ伝送期間を調節する、ように更に構成される、
無線通信端末。 - 前記プロセッサは、
前記無線信号の信号強度を測定し、
前記測定された信号強度と前記抽出されたBSS識別子情報に基づいて前記特定チャネルの占有可否を判別する、ように更に構成され、
前記データ伝送期間は前記特定チャネルが遊休状態と判別されて前記無線通信端末が前記特定チャネルに接近を行う際に調節される、請求項1に記載の無線通信端末。 - 前記特定チャネルの占有可否の判別は、前記特定チャネルに対するCCA(Clear Channel Assessment)に基づいて行われ、前記CCAに利用されるCCA臨界値は、前記無線信号のBSS識別子情報が前記無線通信端末のBSS識別子情報と同じであるのか否かによって互いに異なるレベルに設定される、請求項2に記載の無線通信端末。
- 前記無線信号のBSS識別子情報が前記無線通信端末のBSS識別子情報と同じであれば、第1CCA臨界値が前記CCAに利用され、前記無線信号のBSS識別子情報が前記無線通信端末のBSS識別子情報と相異なれば、前記第1CCA臨界値より高いレベルの第2CCA臨界値が前記CCAに利用される、請求項3に記載の無線通信端末。
- 前記データ伝送期間は前記抽出された長さ情報による前記無線信号の伝送完了時点と同時に又は先に終了されるように調節される、請求項1に記載の無線通信端末。
- 前記データ伝送期間は前記無線通信端末のTXOP(Transmission Opportunity)を示す、請求項1に記載の無線通信端末。
- 無線通信端末のTXOPの情報は、無線信号のノン・レガシープリアンブルに含まれる、請求項6に記載の無線通信端末。
- 前記長さ情報は前記無線信号のレガシープリアンブル、ノン・レガシープリアンブル及びMACヘッダのうち少なくとも一つから獲得される情報である、請求項1に記載の無線通信端末。
- 端末の無線通信方法であって、
特定チャネルの無線信号を受信するステップと、
前記受信された無線信号のBSS(Basic Service Set)識別子情報を抽出するステップと、
前記無線信号のBSS識別子情報が前記端末のBSS識別子情報と相異なる場合、
前記無線信号から前記無線信号の伝送完了時点に関する情報を示す長さ情報を抽出するステップと、
前記無線信号のBSS識別子情報が前記端末のBSS識別子情報と相異なるときは、前記抽出された長さ情報に基づいて前記端末のデータ伝送期間を調節するステップと、
を含む無線通信方法。 - 前記無線信号の信号強度を測定するステップと、
前記測定された信号強度と前記抽出されたBSS識別子情報に基づいて前記特定チャネルの占有可否を判別するステップと、を更に含み、
前記データ伝送期間は前記特定チャネルが遊休状態と判別されて前記端末が前記特定チャネルに接近を行う際に調節される、請求項9に記載の無線通信方法。 - 前記特定チャネルの占有可否を判別するステップは、前記特定チャネルに対するCCA(Clear Channel Assessment)に基づいて行われ、前記CCAに利用されるCCA臨界値は、前記無線信号のBSS識別子情報が前記端末のBSS識別子情報と同じであるのか否かによって互いに異なるレベルに設定される、請求項10に記載の無線通信方法。
- 前記無線信号のBSS識別子情報が前記端末のBSS識別子情報と同じであれば、第1CCA臨界値が前記CCAに利用され、前記無線信号のBSS識別子情報が前記端末のBSS識別子情報と相異なれば、前記第1CCA臨界値より高いレベルの第2CCA臨界値が前記CCAに利用される、請求項11に記載の無線通信方法。
- 前記データ伝送期間は前記抽出された長さ情報による前記無線信号の伝送完了時点と同時に又は先に終了されるように調節される、請求項9に記載の無線通信方法。
- 前記データ伝送期間は前記端末のTXOP(Transmission Opportunity)を示す、請求項9に記載の無線通信方法。
- 端末のTXOPの情報は、無線信号のノン・レガシープリアンブルに含まれる、請求項14に記載の無線通信方法。
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KR10-2015-0035308 | 2015-03-13 | ||
KR20150035308 | 2015-03-13 | ||
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