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Evaluation of network centric frequency diversity admission strategies in a rain affected satellite network
  • Adrian Woodrough,
  • john schormans
Adrian Woodrough
Inmarsat Global Limited

Corresponding Author:[email protected]

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john schormans
Queen Mary University of London
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To meet the increased bandwidth demand from remote locations, new satellites are being launched to allow networks to operate at higher frequencies (i.e., Ka-band – 27.0GHz - 40.0 GHz and V-band 40.0GHz – 75GHz). At these frequencies high availability is challenged by rain attenuation. Consequently, satellite network operators are offering hybrid solutions where, during a rain outage, traffic is moved to a lower frequency secondary heterogeneous satellite network not affected by rain.   This paper evaluates a mobile and network centric handover and admission strategy using a bespoke simulation model of a rain affected star topology hybrid satellite network with primary network operating on Ka band and secondary satellite network operating at a lower frequency.    Results show that a network centric prioritised queue-based admission strategy provides a reduction in handover failure probability of about 5% without extra capacity being made available for the handover of traffic to the secondary network. When queue-based admission is used in combination with adding extra capacity in the secondary satellite network a reduction in handover failure probability of nearly 30% was achieved.   However, when more capacity is made available in the secondary network, the advantages of the network centric queue-based admission strategy slowly disappear with added capacity. This means that operators have a clear choice based on whether they believe that their secondary network has sufficient spare capacity, or whether in fact this is unlikely and therefore the extra cost of a queue-based admission strategies should be weighed against loss of revenue due to lost connections.
01 Nov 2022Submitted to International Journal of Satellite Communications and Networking
01 Nov 2022Assigned to Editor
01 Nov 2022Submission Checks Completed
03 Nov 2022Reviewer(s) Assigned
09 Jan 2023Review(s) Completed, Editorial Evaluation Pending
09 Jan 2023Editorial Decision: Revise Major