Title :
Channel-hopping multiple access
Author :
Tzamaloukas, Asimakis ; Garcia-Luna-Aceves, J.J.
Author_Institution :
Dept. of Comput. Eng., California Univ., Santa Cruz, CA, USA
Abstract :
The medium-access control (MAC) protocols for wireless networks proposed or implemented to date based on collision-avoidance handshakes between the sender and receiver either require carrier sensing or the assignment of unique codes to nodes to ensure that intended receivers hear data packets without interference from hidden sources. We present and analyze a protocol that we call channel-hopping multiple access (CHMA) for multi-channel, ad-hoc networks which does not require carrier sensing or the assignment of unique codes to nodes to ensure collision-free reception of data at the intended receivers in the presence of hidden terminals. We compare CHMA against MACA-CT and show considerable improvement in the performance achieved. The correct avoidance of collisions in CHMA protocols is verified, and their throughput and delay characteristics is studied analytically. CHMA protocols are applicable to ad-hoc networks based on commercial off-the shelf spread spectrum radios operating in unlicensed frequency bands
Keywords :
access protocols; data communication; delays; multi-access systems; multiuser channels; packet radio networks; radiofrequency interference; spread spectrum communication; CHMA protocols; MAC protocols; MACA-CT; channel-hopping multiple access; collision-avoidance handshakes; collision-free data reception; commercial off-the shelf spread spectrum radios; data packets; delay characteristics; hidden terminals; interference; medium-access control protocols; multi-channel ad-hoc networks; performance; throughput; unlicensed frequency bands; wireless networks; Access protocols; Ad hoc networks; Delay; Frequency; Interference; Media Access Protocol; Spread spectrum communication; Throughput; Wireless application protocol; Wireless networks;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853348
