Patent ID: 7388838

Claim:
A method of providing admission control in a wireless communications network, said method having at least three differing quality of service levels, Class 1, Class 2 and Class 3, wherein Class 1 of said three differing quality of service levels is guaranteed a nominal amount of bandwidth, and Class 2 users specify a minimum rate and a nominal rate, said method comprising the steps of: admitting users to said wireless communications network such that Class 1 users are ensured to receive their nominal rates and Class 2 users receive their minimum rates; and providing Class 2 users with their minimum rates before serving Class 3 users; wherein one or more Class 2 users are downgraded to a lower service level to provide sufficient bandwidth for admission of a Class 1 user requesting admission, said method of admission control attempts to achieve load balancing across potential access points in said wireless network when admitting new users, and P th denotes a minimum power threshold requirement for user equipment to be assigned an access point, and wherein n g , n s and n b denote the number of Class 1, Class 2 and Class 3 users, respectively, at any access point (AP), wherein said method of admission control chooses an AP for a class 3 user, with received strength P that has a highest value according to the expression (C−n s B s −n s B snom )/(n b +1) wherein, C = Total available capacity at an AP, C av = Current available capacity, B g = Nominal bandwidth requirement for Class 1 users, B s = Minimum bandwidth requirement for Class 2 users, B snom = Nominal bandwidth for Class 2 users.