Code division multiple access system providing enhanced load and interference based demand assignment service to users

An access controller for use in a code division multiple access system including multiple cells, each cell having a base station and multiple mobile stations, the access controller comprising,

• means for receiving a data burst request requesting a first data rate in excess of the basic data rate B allocated to a mobile station of a first cell,
• means for determining an increased data rate which is to be granted to said mobile station without causing excessive interference at said first cell and at least one adjacent cell;
• and
• means for transmitting a data burst assignment to a base station of said first cell indicating the increased data rate which has been granted to said mobile station.

In a code division multiple access system including multiple cells, each cell having a base station and multiple mobile stations, a method of allocating bandwidth to a mobile station in soft handoff with at least two base stations, comprising the steps of:

• at an access controller,
• receiving a data burst request requesting a first data rate in excess of the basic data rate B allocated to that mobile station;
• requesting, in response to the burst request received from the at least two base stations, an increased data rate from the two base stations;
• receiving an allocation response from each of the at least two base stations indicating an increased data rate available at that base station;
• transmitting a burst assignment from the access controller to the at least two base stations indicating an allocated increased data rate which may be granted to said requesting mobile station, said allocated increased data rate determined from the allocation response received from the at least two base stations.

A code division multiple access system including multiple cells, each cell having a base station and multiple mobile stations, the system further comprising

• at least two base stations, each including a controller means for controlling the
• receiving of a data burst request from a mobile station requesting a first data rate in excess of the basic data rate B allocated to that mobile station;
• transmitting of an allocation response to the access controller in response to a received request for an increased data rate from the access controller;
• and
• receiving of a burst assignment from the access controller indicating an allocated increased data rate which may be granted to said requesting mobile station;
• and
• said access controller, for controlling the
• requesting, in response to the data burst request received from the at least two base stations, an increased data rate from the two base stations;
• receiving of the allocation response from each of the at least two base stations indicating an increased data rate available at that base station;
• and
• transmitting of the burst assignment from the access controller to the at least two base stations indicating said allocated increased data rate which may be granted to said requesting mobile station, said allocated increased data rate not exceeding the minimum of the two increased data rates received from the at least two base stations.