Method and apparatus for granting wireless connection resources to a wireless communications device within a communication system
A method and apparatus for granting wireless connection resources for a UE within a communication system is provided herein. During operation, an application requests allocation of wireless communication resources (a bearer reservation) to sustain transmission at a specified bit rate across the communication system via an admission control function. In response to the bearer reservation request, an admission control function calculates a wireless connection efficiency as a function of the requested bit rate and an amount of shared wireless connection resources required to sustain the requested bit rate given the current wireless connection quality associated with the UE. The wireless connection efficiency is then utilized to determine whether or not to admit the bearer reservation request.
1. A method for admitting a request for allocation of wireless connection resources, the method comprising the steps of:
receiving, via an interface, a request for a bearer reservation for an allocation of an amount of wireless connection resources, wherein the request comprises a bit rate;
determining a wireless connection efficiency of the requested bearer reservation;
determining a wireless connection efficiency of existing bearer reservations, wherein each existing bearer reservation is associated with a bit rate and an amount of wireless connection resources;
comparing the wireless connection efficiency of the requested bearer reservation to the wireless connection efficiency of existing bearer reservations to determine a set of existing bearer reservations which make less efficient use of wireless connection resources than the requested bearer reservation;
determining, based on a policy, a subset of the existing bearer reservations to be preempted that make less efficient use of wireless connection resources than the requested bearer reservation;
preempting the subset of existing bearer reservations with less efficient use of the wireless connection resources than the bearer request;
admitting the requested bearer reservation;
wherein wireless connection efficiency is a function of a bit rate and an amount of wireless connection resources;
wherein the policy comprises preempting an existing bearer reservation
if
(
(
(
requestedBitRate
requestedResources
)
*
efficiencyGain
)
>
(
existingBitRate
existingResources
)
)
,
wherein:
requestedBitRate comprises the bit rate within the request for the bearer reservation;
requestedResources comprises an amount of wireless connection resources required to sustain requestedBitRate;
efficiencyGain comprises a required spectral efficiency gain before an existing bearer reservation is subject to preemption;
existingBitRate comprises the bit rate associated with an existing bearer reservation; and
existingResources comprises an amount of wireless connection resources required to sustain existingBitRate.
2. The method of claim 1 wherein the step of determining the wireless connection efficiency of the requested bearer reservation comprises the steps of:
determining an amount of wireless connection resources required to sustain the bit rate received with the request for the bearer reservation; and
determining the wireless connection efficiency of the requested bearer reservation as a ratio of the bit rate within the request to the amount of wireless connection resources required to sustain the bit rate received with the request.
3. The method of claim 2 wherein the step of determining the amount of wireless connection resources required to sustain the bit rate received with the request for the bearer reservation comprises the steps of:
determining a wireless connection quality between a wireless communication device and an infrastructure communication device; and
determining, based on the wireless connection quality, an amount of wireless connection resources required to sustain the bit rate received with the request for the bearer reservation.
4. The method of claim 1 wherein the step of determining the wireless connection efficiency of existing bearer reservations comprises the steps of:
determining an amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation; and
determining the wireless connection efficiency of the existing bearer reservations as a ratio of the bit rate associated with the existing bearer reservation to the amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation.
5. The method of claim 4 wherein the step of determining the amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation comprises the steps of:
determining a wireless connection quality for each existing bearer reservation;
determining, based on the wireless connection quality for each existing bearer reservation, an amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation.
6. The method of claim 1 wherein the request for the bearer reservation is associated with a priority and each existing bearer reservation is also associated with a priority.
7. The method of claim 6 wherein the step of determining, based on the policy, the subset of existing bearer reservations to be preempted comprises the step of determining only the existing bearer reservations having a same priority as the priority associated with the request for the bearer reservation.
8. The method of claim 1 further comprising the steps of:
determining a wireless connection quality between a wireless communication device and an infrastructure communication device;
determining if the wireless connection quality is relatively static; and
rejecting the request for the bearer reservation if the wireless connection quality is not static.
9. The method of claim 1 wherein the step of determining the wireless connection efficiency of the requested bearer reservation comprises the step of determining the wireless connection efficiency based on historical values of the wireless connection efficiency of the existing bearer reservations.
10. The method of claim 1 wherein the policy comprises favoring a request for a multicast or broadcast bearer reservation over an existing unicast bearer reservation.
11. An apparatus comprising:
an interface receiving a request for a bearer reservation for an allocation of an amount of wireless connection resources, wherein the request comprises a bit rate;
logic circuitry determining a wireless connection efficiency of existing bearer reservations, wherein each existing bearer reservation is associated with a bit rate and an amount of wireless connection resources, the logic circuitry comparing the wireless connection efficiency of the requested bearer reservation to the wireless connection efficiency of existing bearer reservations to determine a set of existing bearer reservations which make less efficient use of wireless connection resources than the requested bearer reservation, the logic circuitry determining, based on a policy, a subset of existing bearer reservations making less efficient use of wireless connection resources to be preempted, and preempting the subset of existing bearer reservations making less efficient use of the wireless connection resources than the bearer request, and admitting the requested bearer reservation; and
wherein wireless connection efficiency is a function of a bit rate and an amount of wireless connection resources;
wherein the policy comprises preempting an existing bearer reservation
if
(
(
(
requestedBitRate
requestedResources
)
*
efficiencyGain
)
>
(
existingBitRate
existingResources
)
)
,
wherein:
requestedBitRate comprises the bit rate within the request for the bearer reservation;
requestedResources comprises an amount of wireless connection resources required to sustain requestedBitRate;
efficiencyGain comprises a required spectral efficiency gain before an existing bearer reservation is subject to preemption;
existingBitRate comprises the bit rate associated with an existing bearer reservation; and
existingResources comprises an amount of wireless connection resources required to sustain existingBitRate.
12. The apparatus of claim 11 wherein the logic circuitry determines the wireless connection efficiency of the requested bearer reservation by determining an amount of wireless connection resources required to sustain the bit rate received with the request for the bearer reservation, and determining the wireless connection efficiency of the requested bearer reservation as a ratio of the bit rate within the request to the amount of wireless connection resources required to sustain the bit rate received with the request.
13. The apparatus of claim 12 wherein the logic circuitry determines the amount of wireless connection resources required to sustain the bit rate received with the request for the bearer reservation by determining a wireless connection quality between a wireless communication device and an infrastructure communication device, and determining, based on the wireless connection quality, an amount of wireless connection resources required to sustain the bit rate received with the request for the bearer reservation.
14. The apparatus of claim 11 wherein the logic circuitry determines the wireless connection efficiency of existing bearer reservations by determining, an amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation, and determining the wireless connection efficiency of the existing bearer reservations as a ratio of the bit rate associated with the existing bearer reservation to the amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation.
15. The apparatus of claim 14 wherein the logic circuitry determines the amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation by determining a wireless connection quality for each existing bearer reservation, and determining, based on the wireless connection quality for each existing bearer reservation, an amount of wireless connection resources required to sustain the bit rate associated with the existing bearer reservation.
16. The apparatus of claim 11 wherein the request for the bearer reservation is associated with a priority and each existing bearer reservation is also associated with a priority.
17. The apparatus of claim 16 wherein the logic circuitry determines, based on the policy, by determining only the existing bearer reservations for preemption having a same priority as the priority associated with the request for the bearer reservation.
18. The apparatus of claim 11 wherein the logic circuitry additionally determines a wireless connection quality between a wireless communication device and an infrastructure communication device, if the wireless connection quality is relatively static, and rejects the request for the bearer reservation if the wireless connection quality is not static.