Title :
MIMO-CAST: A Cross-Layer Ad Hoc Multicast Protocol using MIMO Radios
Author :
Oh, Soon Y. ; Gerla, Mario ; Zhao, Pengkai ; Daneshrad, Babak ; Pei, Guangyu ; Kim, Jae H.
Author_Institution :
Computer Science Department, University of California, Los Angeles, Los Angeles, CA 90095-1596 USA. soonoh@cs.ucla.edu
Abstract :
IEEE 802.11 MAC does not use RTS/CTS exchange in multicast/broadcast mode. This may cause throughput loss and packet collision by hidden terminals. We propose a new cross-layer ad hoc multicast protocol, named MIMO-CAST, to improve efficiency of IEEE 802.11 MAC. MIMO-CAST builds a multicast tree on-demand by using control packets exchange. To reduce duplicated transmissions, MIMO-CAST employs Multi Point Relay with which only designated nodes forward packets and all nodes in the network hear those packets. It also exploits Multiple-Input Multiple-Output (MIMO) by giving different weights to its multiple antennas so that a node can receive from one neighbor while blocking the interference from other nodes. We investigate the performance improvement of MIMO-CAST through a simulation study
Keywords :
Delay; Interference; MIMO; Media Access Protocol; Multicast protocols; Radio transmitters; Receiving antennas; Relays; Throughput; USA Councils;
Conference_Titel :
Military Communications Conference, 2007. MILCOM 2007. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
978-1-4244-1513-7
Electronic_ISBN :
978-1-4244-1513-7
DOI :
10.1109/MILCOM.2007.4455015
