  Wireless sensor networks and Ad-hoc network in the region Multicast
(Geocasting) means to deliver the message to all nodes in a given geographical
area from the source point. Regional Multicast practical application of the
specified area and other regions may be formed to broadcast transmission and
location-related business information, extensive advertising, or to send an
urgent message. Regional multicast protocol design goal is to ensure messaging
and low transport costs. Most have been proposed agreement does not guarantee
message delivery, although some other guaranteed messaging protocol has
triggered high transmission costs. The goal now is to ensure that research
messaging and low-cost local transmission protocol and its algorithm, to
promote the development of domain communication. This paper introduces the
research background and research results, and proposed to solve the problems
and ideas.
