Title :
End-to-End Throughput and Latency Measures for Multi-hop Routing in Relay-Assisted Broadband Cellular OFDM Systems
Abstract :
End-to-end optimization of certain quality of service (QoS) measures such as throughput, reliability and latency plays a key role in designing novel network architectures for next generation relay-assisted broadband cellular multi-hop networks. In this paper, we study the problem of multi-hop routing in broadband cellular networks assuming transmissions under orthogonal frequency division multiplexing (OFDM) modulation over each link. Considering a routing protocol that employs rate-adaptive relaying and OFDM-based codeword transmissions over each hop, supported by an automatic repeat request (ARQ) mechanism against transmission errors, we characterize the end-to-end capacity of multi-hop communication, develop measures for end-to-end throughput and latency as a function of the physical channel and system parameters and propose routing metrics to track and dynamically optimize end-to-end QoS in broadband cellular multi-hop networks
Keywords :
OFDM modulation; automatic repeat request; broadband networks; cellular radio; optimisation; quality of service; routing protocols; telecommunication network reliability; OFDM-based codeword transmissions; automatic repeat request; end-to-end optimization; latency measures; multi-hop routing; network architecture design; next generation relay-assisted broadband cellular multi-hop networks; orthogonal frequency division multiplexing modulation; quality of service; rate-adaptive relaying; relay-assisted broadband cellular OFDM systems; routing protocol; Automatic repeat request; Cellular networks; Delay; Design optimization; OFDM; Quality of service; Relays; Routing; Spread spectrum communication; Throughput; Cellular networks; OFDM; capacity; end-to-end quality of service; latency; multi-hop routing; throughput;
Conference_Titel :
Radio and Wireless Symposium, 2007 IEEE
Conference_Location :
Long Beach, CA
Print_ISBN :
1-4244-0444-4
Electronic_ISBN :
1-4244-0445-2
DOI :
10.1109/RWS.2007.351755