Title :
Multiple-code ISMA for short burst data service in wireless CDMA networks
Author :
Chan, Wai Chung ; Geraniotis, Evaggelos ; Etemad, Kamran
Author_Institution :
Inst. for Syst. Res., Maryland Univ., College Park, MD, USA
Abstract :
The performance of inhibit sense multiple access (ISMA) in a wireless CDMA environment for short burst data service with multiple codes is investigated. Data users are allowed to transmit a short message up to several frames in each burst in a contention manner using the reverse common channels. Several such channels are allocated for this data service. Data users contend for the traffic channels using either the ISMA or slotted Aloha protocol. The capture probability with multiple-codes is derived. Simulations are used to compare the performance of the protocols. The results show that for this short data messages scenario ISMA has a higher throughput than slotted Aloha. A slightly different version of ISMA is also proposed to reduce the access delay for real-time messages
Keywords :
access protocols; code division multiple access; data communication; delays; personal communication networks; probability; telecommunication traffic; ISMA protocol; access delay reduction; capture probability; channel allocation; inhibit sense multiple access; multiple-code ISMA; performance; real-time messages; reverse common channels; short burst data service; simulations; slotted Aloha protocol; third generation wireless PCS systems; throughput; traffic channels; traffic types; wireless CDMA networks; Access protocols; Base stations; Delay; Educational institutions; Intelligent networks; Multiaccess communication; Personal communication networks; Real time systems; Throughput; Wireless sensor networks;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778114
