Patent ID: 8908660
Filing Date: 2014-12-09
Classification: H04L,H04W

Abstract:
1. A gateway apparatus that connects a multi-hop network of a tree structure formed of node apparatuses to another network, comprising: a processor performing a computer program stored in a non-transitory storing medium; a grouping section, implemented using the processor, that groups, for each representative node apparatus having a direct link to the gateway apparatus in the tree structure, the nodes belonging to a subtree having a same representative node as a root, into a node group; an interference group specifying section, implemented using the processor, that specifies a node group in which packet communication in the node group is subjected to an interference of a degree exceeding a threshold as an interference group; and a slot allocation section, implemented using the processor, that allocates one time slot among a plurality of time slots included in a frame which is a packet transmission period of the node apparatus to one interference group among a plurality of interference groups as a packet transmission period, and allocates another time slot among the plurality of time slots to another interference group among the plurality of interference groups as a packet transmission period.