TY - GEN
T1 - A cut-through forwarding scheme for delay optimization in IEEE 802.16j Simultaneous Transmit and Receive multihop relay networks
AU - Jia, Wen Kang
AU - Chen, Yaw-Chung
PY - 2010
Y1 - 2010
N2 - The Simultaneous Transmit and Receive (STR) relaying is the most important feature as a Multi-hop Relay solution in WiMAX technologies to improve performance and extend coverage. This article contributes to the performance on unalignment modes in OFDM-based relay framework and applying in WiMAX standard which refer as IEEE 802.16j STR MAC. We proposed a cut-through scheme based on unalignment approach on OFDM-based symbol scheduling which provides lower forwarding latency per hop by shifting the alignment of frame duration between the superordinate RS and subordinate RS(s), wherein the intermediate RS starts forwarding an OFMD frame before the whole frame has been received, normally as soon as the sub-frame is processed. Compared with legacy synchronous STR relaying, an unaligned STR relaying can provide a MS which is attached to the farthest RS, and still get a satisfied One Way Delay (OWD) and Round Trip Time (RTT). In addition, we demonstrate a significant performance improvement; the result shows the importance of defining unalignment approach of the OFDM-based multi-hop relaying topology.
AB - The Simultaneous Transmit and Receive (STR) relaying is the most important feature as a Multi-hop Relay solution in WiMAX technologies to improve performance and extend coverage. This article contributes to the performance on unalignment modes in OFDM-based relay framework and applying in WiMAX standard which refer as IEEE 802.16j STR MAC. We proposed a cut-through scheme based on unalignment approach on OFDM-based symbol scheduling which provides lower forwarding latency per hop by shifting the alignment of frame duration between the superordinate RS and subordinate RS(s), wherein the intermediate RS starts forwarding an OFMD frame before the whole frame has been received, normally as soon as the sub-frame is processed. Compared with legacy synchronous STR relaying, an unaligned STR relaying can provide a MS which is attached to the farthest RS, and still get a satisfied One Way Delay (OWD) and Round Trip Time (RTT). In addition, we demonstrate a significant performance improvement; the result shows the importance of defining unalignment approach of the OFDM-based multi-hop relaying topology.
KW - 802.16j
KW - Mobile Multi-hop Relay (MMR)
KW - Round Trip Time (RTT)
KW - Simultaneous Transmit and Receive (STR)
UR - http://www.scopus.com/inward/record.url?scp=78650644660&partnerID=8YFLogxK
U2 - 10.1109/ICNDC.2010.23
DO - 10.1109/ICNDC.2010.23
M3 - Conference contribution
AN - SCOPUS:78650644660
SN - 9780769542072
T3 - Proceedings of the 1st International Conference on Networking and Distributed Computing, ICNDC 2010
SP - 65
EP - 69
BT - Proceedings of the 1st International Conference on Networking and Distributed Computing, ICNDC 2010
T2 - 1st International Conference on Networking and Distributed Computing, ICNDC 2010
Y2 - 21 October 2010 through 24 October 2010
ER -