Title :
GAHA and GAPA: approaches for supporting link asymmetry in mobile ad hoc networks
Author :
Kim, Dongkyun ; Jeong, Hwanseok ; Toh, C.K. ; Choi, Yanghe
Author_Institution :
Sch. of Comput. Sci. & Eng., Seoul Nat. Univ., South Korea
Abstract :
Existing routing protocols for mobile ad hoc networks assume that all nodes have the same radio transmission range. In other words, the mobile ad hoc network has symmetric links, which means that two neighboring nodes A and B are within the transmission range of one another. However, since nodes consume battery power independently according to their computing and communication load, there exist asymmetric links, which means that node A is within node B´s transmission range, but not vice versa. In this paper, two approaches are presented to support routing in the existence of asymmetric links: GAHA (GPS-based Hop-by-hop Acknowledgment) and GAPA (GPS-based Passive Acknowledgment) schemes. Both GAHA and GAPA can be applied to any routing protocols by utilizing GPS (Global Positioning System) location information. Simulation results reveal that both GAHA and GAPA protocols cope well in the presence of asymmetric wireless links and nodes´ mobility
Keywords :
Global Positioning System; mobile radio; packet radio networks; protocols; telecommunication network routing; wireless LAN; GAHA; GAPA; GPS-based Hop-by-hop Acknowledgment; GPS-based Passive Acknowledgment; Global Positioning System; asymmetric links; link asymmetry; location information; mobile ad hoc networks; node mobility; routing protocols; wireless LAN; Access protocols; Ad hoc networks; Batteries; Computer science; Energy consumption; Global Positioning System; Intelligent networks; Mobile ad hoc networks; Mobile communication; Routing protocols;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965264
