Power overload control method useful with enhanced dedicated channel traffic

1. A method of controlling communications that may include enhanced dedicated channel (E-DCH) traffic, comprising the steps of:

setting a total uplink power limit below an allowable power limit;

allocating a minimum power to each E-DCH user on an individual user basis such that a cumulative allocated E-DCH power satisfies a selected minimum E-DCH power threshold; and

determining whether to grant a non-E-DCH service request based on a relationship between a current total uplink power and the total uplink power limit and a relationship between a current cumulative allocated E-DCH power and the selected minimum E-DCH power threshold.

2. The method of claim 1 , wherein the selected minimum E-DCH power threshold comprises at least one of

a minimum serving E-DCH power allocation; or

a minimum non-serving E-DCH power allocation.

3. The method of claim 1 , comprising

determining a total E-DCH resource usage from an uplink power of the active serving E-DCH users and a non-serving to total E-DCH power ratio.

4. The method of claim 1 , comprising

determining a current E-DCH activity from a determined received total wideband power measurement and a serving E-DCH power measurement.

5. The method of claim 1 , comprising

setting the minimum E-DCH power allocation to achieve a desired priority for E-DCH traffic.

6. The method of claim 5 , comprising

setting the desired priority of E-DCH traffic higher than a priority for non-E-DCH traffic.

7. The method of claim 1 , comprising

determining whether a current total uplink power is less than the total uplink power limit; and

granting a service request for a non-E-DCH user if the current total uplink power is less than the total uplink power limit.

8. The method of claim 1 , comprising

determining whether a current total uplink power is at least equal to the total uplink power limit;

determining whether a current E-DCH power is at least equal to the minimum E-DCH power threshold; and

granting a service request for a non-E-DCH user if the current total uplink power is at least equal to the total uplink power limit and the current E-DCH power is at least equal to the minimum E-DCH power threshold.

9. The method of claim 1 , comprising

determining whether a current total uplink power is at least equal to the total uplink power limit;

determining whether a current E-DCH power is less than the minimum E-DCH power threshold; and

denying a service request for a non-E-DCH user if the current total uplink power is at least equal to the total uplink power limit and the current E-DCH power is less than the minimum E-DCH power threshold.

10. The method of claim 1 , wherein the uplink power is a received total wideband power.

11. The method of claim 1 , comprising

allocating an amount of uplink resources to E-DCH users that exceeds the minimum E-DCH power allocation.

12. The method of claim 11 , comprising

allocating an amount of uplink resources to E-DCH users that is approximately equal to any available uplink resource amount between a currently occupied amount and the allowable uplink power limit.

13. The method of claim 1 , comprising

setting a congestion control limit higher than the allowable uplink power limit; and

reducing an uplink resource allocation to non-E-DCH users if there is E-DCH traffic and a current total uplink power exceeds the congestion control limit.

14. The method of claim 1 , wherein the total uplink power limit is a limit for a received total wideband power at a base station and the minimum E-DCH power threshold corresponds to an amount of resources reserved for E-DCH users.