TY - GEN
T1 - Quality-of-service in wireless personal area networks
AU - Wang, Teng Hui
AU - Shih, Ming-Yi
AU - Deng, Der-Jiunn
PY - 2011/11/11
Y1 - 2011/11/11
N2 - IEEE 802.15.4 standard defines the physical layer and medium access control layer protocols for low-rate wireless personal area networks (LR-WPANs). In IEEE 802.15.4 LR-WPANs, quality-of-service is supported by using the guaranteed time slots (GTS) to transmit real-time packets since a LR-WPAN device doesn't need to contend the channel in the GTS. In the PAN coordinator, requests of GTS are allocated based on the first-come-first-service policy. However, with the increasing of multimedia applications, this original design has suffered from the lack of priority mechanism to support the transmission of real-time packets. In this paper, we propose a non-preemptive priority-based polling scheme for the GTS allocation in IEEE 802.15.4 LR-WPANs. The proposed scheme can ensure that the connections which have higher priority can transmit real-time packets quicker. The simulations show that the proposed scheme can achieve more GTS allocations, higher throughput, better bandwidth utilization and lower packets access delay time.
AB - IEEE 802.15.4 standard defines the physical layer and medium access control layer protocols for low-rate wireless personal area networks (LR-WPANs). In IEEE 802.15.4 LR-WPANs, quality-of-service is supported by using the guaranteed time slots (GTS) to transmit real-time packets since a LR-WPAN device doesn't need to contend the channel in the GTS. In the PAN coordinator, requests of GTS are allocated based on the first-come-first-service policy. However, with the increasing of multimedia applications, this original design has suffered from the lack of priority mechanism to support the transmission of real-time packets. In this paper, we propose a non-preemptive priority-based polling scheme for the GTS allocation in IEEE 802.15.4 LR-WPANs. The proposed scheme can ensure that the connections which have higher priority can transmit real-time packets quicker. The simulations show that the proposed scheme can achieve more GTS allocations, higher throughput, better bandwidth utilization and lower packets access delay time.
UR - http://www.scopus.com/inward/record.url?scp=80655142473&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80655142473&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-23948-9_34
DO - 10.1007/978-3-642-23948-9_34
M3 - Conference contribution
AN - SCOPUS:80655142473
SN - 9783642239472
T3 - Communications in Computer and Information Science
SP - 307
EP - 316
BT - Security-Enriched Urban Computing and Smart Grid - Second International Conference, SUComS 2011, Proceedings
T2 - 2nd International Conference on the Emerging Areas of Security-Enriched Urban Computing and Smart Grids, SUComS 2011
Y2 - 21 September 2011 through 23 September 2011
ER -