Network protocol for wireless ad hoc networks

专利名称：Network protocol for wireless ad hoc

networks

发明人：Bong K. Ryu,Jason C. Erickson,James X.

Smallcomb,Son K. Dao

申请号：US09561399申请日：20000428公开号：US06791949B1公开日：20040914

专利附图：

摘要：A method for establishing and maintaining a wireless ad hoc networkcomprising backbone nodes which forward packets through the network and non-

backbone nodes which are capable of using the network, but do not forward packets.Signaling packets containing one or more protocol support records are periodicallygenerated and transmitted by each node to neighboring nodes and are forwardedthrough the network by backbone nodes. Non-network nodes are initially selected tobecome backbone members during a SELECTION process based on an assessment of thenode's connectivity relative to its neighbors. Link quality between nodes is monitored andused during an EXPANSION process in which additional non-network nodes may becomebackbone members. Disconnected backbone segments are interconnected during aCONNECTION process and the network is maintained during a MAINTENANCE process byperiodically assessing the value of a backbone node's membership in the backbone.Efficient multicast routing is supported over the backbone by dynamically establishingand maintaining multicast trees. Signaling packets are periodically and frequentlygenerated, thereby facilitating rapid adaptation to network changes. Further, thesignaling packets are efficiently forwarded only by backbone nodes, thereby reducingbandwidth associated with establishing and maintaining the network.

申请人：RAYTHEON COMPANY

代理机构：Daly, Crowley & Mofford, LLP

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