System and method for dynamic frequency allocation for packet switched services

A method of dynamic channel allocation for packet switched services, comprising:

• dividing the transceiver unit resources in a cell to shared channel resources forming a shared territory and dedicated channel resources forming a dedicated territory;
• allocating frequencies for the shared territories to a plurality of cells based upon minimizing the interference between the shared territories among the plurality of cells.
• transmitting the frequencies to each of the plurality of cells;
• receiving a request for a channel assignment from a mobile station or a core network, wherein a channel assignment comprises two of the frequencies;
• estimating the achievable throughputs in each of the possible radio channels based on the estimated C/I and the channel capacity already used by other connections;
• determining a traffic class type for the channel assignment, wherein the traffic class type is either best effort or guaranteed;
• assigning the shared channel providing the highest estimated throughput when the traffic class type is best effort;
• assigning a dedicated channel able to provide the required throughput when the traffic class type is guaranteed and a shared channel assignment would generate inadequate throughput for the mobile station;
• evaluating outgoing interference that may result from the channel assignment impacting any existing connections in the serving cell or the nearby cells based upon the estimated post-assignment C/I ratio for each existing connection;
• and
• initiating a channel re-assignment for the existing connections for which the C/I ratio is estimated not to exceed a predetermined value.

A computer program storable on a computer readable medium and executable by computer for dynamic channel allocation for packet switched services, comprising:

• a throughput estimation code segment to determine when possible interference with other assigned channels may occur and derive a throughput estimation for all available radio channels based upon a total C/I ratio;
• an outgoing interference evaluation code segment to determine the effect of the channel assignment upon other channels already assigned within a cell and within nearby cells based upon a C/I ratio;
• and
• a QoS management code segment to monitor requests for channel assignment from the mobile station or the core network, allocate the channel assignment to either a dedicated channel or a shared channel based upon a traffic class type associated with the mobile station the throughput requirements of the channel assignment and the estimated available throughput on available shared and dedicated channels.