(EN) A wireless communication apparatus which establishes a multi-hop network having a tree structure and which repeats startup and sleep is provided with: a network control unit that holds downstream-pathinformation which is information regarding a path to a wireless communication apparatus of lower level than the wireless communication apparatus in the tree structure, and upstream-path information which is information regarding a path to a wireless communication apparatus of higher level than the wireless communication apparatus in the tree structure, the network control unit generating a downstream-path control message for notification of the downstream-path information; and a wireless transmission-reception unit that commands the network control unit to update the upstream-path informationif, after the downstream-path control message is transmitted to an adjacent wireless communication apparatus of higher level than the wireless communication apparatus in the tree structure, a confirmation of delivery of the downstream-path control message is received from the adjacent wireless communication apparatus of higher level. Thus, even when a node establishing a multi-hop network is performing intermittent control, communication paths can be updated.
(ZH) 无线通信装置构成树形结构的多跳网络，并反复进行起动和休眠，其中，该无线通信装置具备：网络控制部，其保持接往树形结构中比本装置靠下位的无线通信装置的链路的信息即下行链路信息和接往树形结构中比本装置靠上位的无线通信装置的链路的信息即上行链路信息，并生成通知下行链路信息的下行链路控制消息；以及无线发送接收部，其在将下行链路控制消息发送给树形结构中比本装置靠上位的相邻的无线通信装置后，从上位的相邻的无线通信装置接收到针对下行链路控制消息的送达确认时，向网络控制部指示上行链路信息的更新，因此，即使在构成多跳网络的节点正在进行间歇性控制的情况下，也能够对通信链路进行更新。
