Frontiers in Adaptive Control Part 14

Tham khảo tài liệu 'frontiers in adaptive control part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 316 Frontiers in Adaptive Control assigned the MAX quality level. However we want to get a clearly higher score when serving two MIN TSs than one MAX TS. Since it is more important to serve multiple low quality TSs than one with high quality we decided to set Q_Factor 1 when the TS is assigned the MIN quality level and Q_Factor when it is assigned the MAX quality level. First we calculate the score for each TS StreamQ _ Score Q _ Factor X Pr iorityWeight X TimeServedRatio 13 where the PriorityWeight depends on the stream s traffic priority and the TimeServedRatio is the ratio of the time interval the TS was served to the total time it was scheduled to last. At this point it should be reminded that according to our simulation settings all TSs are scheduled to last no more than the simulation duration. So in an ideal situation all the TSs would be completed before the simulation termination. The IdealStreamQ_Score is the score of a MAX quality TS that is completed before the simulation termination TimeServedRatio 1 . It stands IdealStreamQ _ Score MaxQ _ Factor X Pr iorityWeight 14 The RatioNetQ_Score which concerns the total offered streams is defined as OfferedStreams I OfferedStieams RatioNetQ_ Score StreamQ_ Score IdealStremQ _ Score 15 Finally we calculate each simulated network s Q_Score in relation to the score of the same network when using a different protocol. It stands Q _ Score RatioNetQ _ Score X TT Throughput 16 HigherThroughput for the network with the lower throughput and Q_Score RatioNetQ_Score for the network with the higher throughput. For example if a HCCA network has RatioNetQ_Score 1 and Throughput and the same network using POAC-QG has RatioNetQ_Score 1 and Throughput then the Q_Score for the HCCA network is while for the POAC-QG network is 1. Thus Q_Score as it is formed in equation 16 can only be used to compare the performance of two networks and not as an individual metric. The statistical results concerning the Q_Score of

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