Energy-Efficient Adaptive Geosource Multicast Routing for Wireless Sensor Networks

Algorithm 1

Group management at intermediate nodes.

(1) // MState: multicast state table, contains dst and hopCnt pairs

(2) if  joinMsg(dst) ∈ MState(dstSeg) then

(3) if  hopCnt < MState(dstSeg).hopCnt  then

(4)  MState(dstSeg) = dst

(5)  MState(dstSeg).hopCnt = hopCnt

(6)  Add the location information to joinMsg

(7)  Send the joinMsg to the next hop toward src

(8) end if

(9) else

(10) Add [dstSeg, hopCnt] to Mstate

(11) Add the location information to joinMsg

(12) Send the joinMsg to the next hop toward src

(13) end if