Achievable Region in Slotted ALOHA Throughput for One-Relay Two-Hop Wireless Network Coding

Umehara, Daisuke; Denno, Satoshi; Morikura, Masahiro; Sugiyama, Takatoshi

doi:10.1007/978-3-642-11723-7_25

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Equations from (10) to (12) provide successful total packet access rates in a slot because any WS can sense transmissions of the other WSs. Therefore, the proposed autonomous CW min optimization works well even in multirate networks.…”

Section: B Results In Multirate Networkmentioning

confidence: 99%

Enhancement of IEEE 802.11 and network coding for single-relay multi-user wireless networks

Umehara

Huang

Denno

et al. 2010

2010 4th International Conference on Signal Processing and Communication Systems

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Network coding is a promising technique for improving system performance in wireless multihop networks. In this paper, the throughput and fairness in single-relay multiuser wireless networks are evaluated. The carrier sense multiple access with collision avoidance (CSMA/CA) protocol and network coding are used in the medium access control (MAC) sublayer in such networks. The fairness of wireless medium access among stations (STAs), the access point (AP), and the relay station (RS) results in asymmetric bidirectional flows via the RS; as a result the wireless throughput decreases substantially. To overcome this problem, an autonomous optimization of minimum contention window size is developed for CSMA/CA and network coding to assign appropriate transmission opportunities to both the AP and RS. By optimizing the minimum contention window size according to the number of STAs, the wireless throughput in single-relay multi-user networks can be improved and the fairness between bidirectional flows via the RS can be achieved. Numerical analysis and computer simulations enable us to evaluate the performances of CSMA/CA and network coding in single-relay multi-user wireless networks.

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Section: B Results In Multirate Networkmentioning

confidence: 99%

Enhancement of IEEE 802.11 and network coding for single-relay multi-user wireless networks

Umehara

Huang

Denno

et al. 2010

2010 4th International Conference on Signal Processing and Communication Systems

Self Cite

View full text Add to dashboard Buy / Rent full text

show abstract

“…4.1, all links have a single PHY rate with 54 Mbit/s. Equations from (10) to (12) provide successful total packet access rates in a slot because any WS can sense transmissions of the other WSs. Therefore, the proposed autonomous CW min optimization works well even in multirate networks.…”

Section: Results In Multirate Networkmentioning

confidence: 99%

“…The performance analyses of single-relay multi-user networks with slotted ALOHA and network coding have been previously described [10]- [12]. These reports demonstrated that tuning the transmission probability of RS maximizes wireless throughput, which prompted us to hypothesize that appropriate tuning of transmission opportunity may also maximize wireless throughput in single-relay multi-user wireless networks using CSMA/CA and network coding.…”

Section: Related Workmentioning

confidence: 96%

Enhancement of CSMA/CA and Network Coding in Single-Relay Multi-User Wireless Networks

Huang

Umehara

Denno

et al. 2010

IEICE Trans. Commun.

Self Cite

View full text Add to dashboard Buy / Rent full text

Network coding is a promising technique for improving system performance in wireless multihop networks. In this paper, the throughput and fairness in single-relay multiuser wireless networks are evaluated. The carrier sense multiple access with collision avoidance (CSMA/CA) protocol and network coding are used in the medium access control (MAC) sublayer in such networks. The fairness of wireless medium access among stations (STAs), the access point (AP), and the relay station (RS) results in asymmetric bidirectional flows via the RS; as a result the wireless throughput decreases substantially. To overcome this problem, an autonomous optimization of minimum contention window size is developed for CSMA/CA and network coding to assign appropriate transmission opportunities to both the AP and RS. By optimizing the minimum contention window size according to the number of STAs, the wireless throughput in single-relay multiuser networks can be improved and the fairness between bidirectional flows via the RS can be achieved. Numerical analysis and computer simulations enable us to evaluate the performances of CSMA/CA and network coding in single-relay multiuser wireless networks.

show abstract

Achievable Region in Slotted ALOHA Throughput for One-Relay Two-Hop Wireless Network Coding

Cited by 6 publications

References 16 publications

Enhancement of IEEE 802.11 and network coding for single-relay multi-user wireless networks

Enhancement of IEEE 802.11 and network coding for single-relay multi-user wireless networks

Enhancement of CSMA/CA and Network Coding in Single-Relay Multi-User Wireless Networks

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