Medium access control protocols performance in satellite communications

Peyravi, Hassan

doi:10.1109/35.751497

Cited by 107 publications

(55 citation statements)

References 10 publications

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“…However, their design is usually simplified by coordination with a single visible satellite [23]. T-Lohi, instead, is fully distributed without a central coordinator.…”

Section: Related Workmentioning

confidence: 99%

Efficient Distributed Medium Access Arbitration for Multi-Channel Wireless Sensor Networks

Younis

Bushra

2007

2007 IEEE International Conference on Communications

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Abstract-This paper introduces T-Lohi, a new class of distributed and energy-efficient media-access protocols (MAC) for underwater acoustic sensor networks (UWSN). MAC design for UWSN faces significant challenges. For example, acoustic communication suffers from latencies five orders-of-magnitude larger than radio communication, so a naive CSMA MAC would require very long listen time resulting in low throughput and poor energy efficiency. In this paper, we first identify unique characteristics in underwater networking that may affect all MACs, such as space-time uncertainty and deafness conditions. We then develop T-Lohi employing a novel tone-based contention resolution mechanism that exploits space-time uncertainty and high latency to detect collisions and count contenders, achieving good throughput across all offered loads. T-Lohi exploits a low-power wake-up receiver to significantly reduce energy consumption. We evaluate design choices and protocol performance through extensive simulation. Finally, we compare T-Lohi against a few canonical MAC protocols. The results show that the energy cost of packet transmission is within 3-9% of optimal, and that Lohi achieves good channel utilization, within 30% utilization of the theoretical maximum. We also show that Lohi is stable and fair under both low and very high offered loads. Finally, we compare Lohi with other alternatives, including TDMA, CSMA, and ALOHA. Except for TDMA under heavy load, Lohi provides the best utilization in all cases, and it is always the most energy efficient.

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“…However, their design is usually simplified by coordination with a single visible satellite [23]. T-Lohi, instead, is fully distributed without a central coordinator.…”

Section: Related Workmentioning

confidence: 99%

Efficient Distributed Medium Access Arbitration for Multi-Channel Wireless Sensor Networks

Younis

Bushra

2007

2007 IEEE International Conference on Communications

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“…In fixed assignment protocols like fixed assigned multiple access (FAMA) [18], the allocation of the channel bandwidth to a station is static, and independent of stations activities. This can be done by partitioning the bandwidth space into slots which are assigned in a predetermined fashion.…”

Section: Resource Allocation Mechanismsmentioning

confidence: 99%

Innovative DAMA algorithm for multimedia DVB-RCS system

Albiol

Aguiar

Baladrón

et al. 2013

J Wireless Com Network

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Satellite is often used as an access network in the Next Generation Networks landscape, where multimedia and real-time services are supported by return channels. However, these satellite return channels are a very limited resource with many terminal stations competing for its use, making its efficient assignation one of the key problems to solve in order to increase network performance. This article presents an innovative implementation of the resource allocation mechanism demand assigned multiple access (DAMA) applied to satellite return channel assignment, which provides support for dynamic allocation and quality-of-service. This resource allocation mechanism has been validated with the special purpose advanced Internet network emulator, using the test lab implementation to optimize traffic mapping and queue parameters directly in the field. The numerical results for the different test cases considered are presented, showing that the DAMA algorithm provided is an efficient way of assigning resources, and also helping in the comparison of the different capacity request mechanisms described in the standard.

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“…In satellite radio networks, several approaches include demand-assignment multiple access (DAMA) [42] and interleaved collision-resolution protocols [43]. Fiber optic networks have used slotted Aloha and coding to deal with propagation delays on the order of 1000 slots, much higher than in satellite channels [44].…”

Section: Future Directionsmentioning

confidence: 99%