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Shankar, T.
- Energy Optimization Packet Scheduling Algorithms on a Mobile Wimax Using Ns2
Authors
1 CEG, Anna University Chennai, Tamil Nadu, IN
2 VIT University, Vellore, Tamil Nadu, IN
3 Department of Electronics and Communication Engineering, CEG, Anna University Chennai, Tamil Nadu, IN
Source
Wireless Communication, Vol 1, No 6 (2009), Pagination: 243-248Abstract
Recently, mobile communication technologies have been developed rapidly. The IEEE 802.16e wireless metropolitan area network (WMAN) standard is an emerging technology to support roaming mobility of mobile stations (MSs) in outdoor environment. For MSs powered by batteries, the standard supports power saving mode to conserve battery power meanwhile fulfilling the requirements of quality of services. Regarding to different service types, standard defines three different power saving types for them and each type has its own power saving parameters. In this paper, Broadband wireless access systems usually provide flexible sleep-mode operations for mobile stations to conserve their energy during idle or active mode. For Mobile WiMAX, the IEEE 802.16e, offers several power-saving classes that can be associated with different types of network connections to minimize power consumption of mobile stations.
Keywords
Mobile WiMAX, Power Saving, Energy Efficiency, Packet Scheduling.
- Choosing effects of PHYSICAL CARRIER SENSING in Wireless Adhoc Networks
Authors
1 CEG, Anna University Chennai, Tamil Nadu, IN
2 Electronics and Communication Engineering Department, VIT University, IN
Source
Wireless Communication, Vol 1, No 5 (2009), Pagination: 235-242Abstract
IEEE 802.11 MAC having two methods for medium reservation. 1) virtual carrier sensing and 2) physical carrier sensing. VCS having many drawbacks in wireless ad hoc networks. PCS mechanism can replace the virtual carrier sensing in most practical applications. But choice of PCS threshold plays vital role in ad hoc networks. Choice of PCS threshold is tradeoff between the throughput and spatial reuse. In this paper we present practical experiments for to see the PCS threshold effects on network throughput.