Asynchronous multimedia multihop wireless networks

Lin, Chun-Hung Richard; Gerla, Mário

doi:10.1109/infcom.1997.635121

Cited by 147 publications

(76 citation statements)

References 8 publications

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“…FAMA is an experimental MAC protocol specifically developed for the Glomo DARPA program. It bears close resemblance to the IEEE 802.11 protocol, which is being proposed as the standard of wireless LANs as well as ad-hoc wireless networks [12].…”

Section: Experimental Configuration and Parametersmentioning

confidence: 87%

TCP over wireless multi-hop protocols: simulation and experiments

Gerla¹,

Bagrodia²,

Zhang³

et al.

1999 IEEE International Conference on Communications (Cat. No. 99CH36311)

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In this study we investigate the interaction between TCP and MAC layer in a wireless multi-hop network. This type of network has traditionally found applications in the military (automated battlefield), law enforcement (search and rescue) and disaster recovery (flood, earthquake), where there is no fixed wired infrastructure. More recently, wireless "ad-hoc" multi-hop networks have been proposed for nomadic computing applications. Key requirements in all the above applications are reliable data transfer and congestion control, features that are generally supported by TCP. Unfortunately, TCP performs on wireless in a much less predictable way than on wired protocols.Using simulation, we provide new insight into two critical problems of TCP over wireless multi-hop. The first is the conflict between data packets and ACKs, which causes TCP performance to degrade for window sizes greater than 1 packet. The second is the interaction between MAC and TCP layer backoff timers which causes severe unfairness and capture conditions. In the paper, we identify these problems in several representative simulation runs on various topologies and traffic patterns and indicate possible remedies to improve TCP efficiency over a wireless multi-hop network.

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Section: Experimental Configuration and Parametersmentioning

confidence: 87%

TCP over wireless multi-hop protocols: simulation and experiments

Gerla¹,

Bagrodia²,

Zhang³

et al.

1999 IEEE International Conference on Communications (Cat. No. 99CH36311)

Self Cite

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“…Reservation based MAC schemes have been extensively studied in the literature [3][4][5][6][7][8]. In these schemes, each node first contends in a contention period to send a reservation request.…”

Section: Related Work and Discussionmentioning

confidence: 99%

A distributed MAC scheme supporting voice services in mobile ad hoc networks

Jiang

Wang

Poor

et al. 2009

Wireless Communications

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SummaryFuture mobile ad hoc networks are expected to support voice traffic. The requirement for small delay and jitter of voice traffic poses a significant challenge for medium access control (MAC) in such networks. User mobility presents unique difficulties in this context due to the associated dynamic path attenuation. In this paper, a MAC scheme for mobile ad hoc networks supporting voice traffic is proposed. With the aid of a low-power probe prior to DATA transmissions, resource reservation is achieved in a distributed manner, thus leading to small packet transmission delay and jitter. The proposed scheme can automatically adapt to dynamic path attenuation in a mobile environment. Statistical multiplexing of on/off voice traffic can also be achieved by partial resource reservation for off voice flows. Simulation results demonstrate the effectiveness of the proposed scheme.

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“…Bazı protokoller, bireysel düğümlerin iletim menzili kontrollerini sağlamak için topolojiler önermişlerdir. Sonuç olarak, bu ağlar arasında tek yönlü bağlantılar oluşmaktadır [60]- [63].…”

Section: Tek Yönlü Mac Protokolleriunclassified