報告書番号

R10035

タイトル（和文）

需要家向け通信における伝送特性評価―自動検針用国際標準プロトコルと無線LANによる応答時間の評価―

タイトル（英文）

Transmission Characteristics Evaluation of Demand-side Communication -Evaluation of Response Time Using International Standard Protocol for Meter Reading and Wireless LAN-

概要 （図表や脚注は「報告書全文」に掲載しております）

本報告では，上位層にIEC 62056，下位層にマルチホップ無線LAN（IEEE 802.11g）を用いた場合の通信特性を4台の通信機器を用いた実験により評価した。さらに，大規模マルチホップ無線ネットワークにおけるホップ数分布を求めるとともに，実験結果から推察される情報収集時間や事故情報伝送時間を評価した結果，情報収集においては，需要地系セキュア通信ネットワークにおける通信要件を満足可能と判断可能であり，ミリ秒オーダの応答速度を満足するためにはブロードキャストなどの適用を検討する必要があることを示した。

概要 （英文）

The next generation grid is developed in CRIEPI for future low-carbon society. To realize cooperative operation between power transmission system and demand-area equipments such as PV (Photo-Voltaic) system, the demand-area secure communication network is also developed. In the study of the demand-area secure communication network, IEC 62056, which is the standardized protocol for meter reading, has been evaluated for communication requirements especially from the view point of latency. On the other hand, multi-hop wireless LAN also has been evaluated for the access line of demand-area secure communication network.
In this report, fundamental transmission characteristics of the protocol suite combining the IEC 62056 and multi-hop IEEE 802.11g are evaluated using experimental setup. Furthermore, the number of hop in the multi-hop wireless network employing the large number of repeater is calculated by using computer simulation. From these evaluated results, applicability of this protocol suite for the demand-area secure communication network from the view point of the communication requirements is evaluated. The combination of the IEC 62056 and multi-hop IEEE 802.11g well suits for the communication requirements basically. The need to use broadcast or multicast technique to satisfy the low latency data transmission such as emergency signals may be required under the situation of the large number of repeater.

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