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Table 1 Main definition parameters

From: Dynamic spectrum allocation with admission control based on cognitive radio for QoS support in multiple wireless network

Parameter Definition
M Capacity of the system
N Number of wireless service providers
K i Number of channels in WSP i
T h i Threshold of channels reserved to by WSP i
μ PU Service rate of PUs
μ SU Service rate of SUs
λ new,SU i Fixed SU arrival rate in WSP i
λ out,SU i External SU arrival rate in WSP i
λ PU i PUs arrival rate in WSP i
λ j,i Migration rate from WSP j to i
n PU i Number of PUs in WSP i
n(i) Total number of users in WSP i
n SU i Number of SUs in WSP i
n SU i Number of external SUs in WSP i