Wireless Network Throughput Enhancement Through Channel Aware Scheduling

1. A system for increasing wireless network throughput, the system comprising: a classifier configured to assign a packet to one of a plurality of transmission queues; and a hierarchical scheduling module stored in a computer-readable storage medium and executable by a processing device, the hierarchical scheduling module configured to: select a priority scheduled packet for transmission, wherein the selection is made in accordance with a weighted scheduling technique utilizing weighted round robin for determining a weight for each transmission queue, assign queue weights to stations within each transmission queue, determine from which of the plurality of transmission queue a failed packet originated, requeue the failed packet for retransmission at the queue from which the failed packet is determined to have originated, and penalize a credit register of the determined queue, wherein a transmission queue is activated at a different station when penalizing the credit register of the determined queue results in a predetermined level.

2. The system of claim 1 , wherein the failed packet is requeued at a head of the queue from which the failed packet is determined to have originated.

3. The system of claim 1 , wherein retransmission of the failed packet is deferred.

4. The system of claim 1 , wherein the assigned queue weights are modified based on one or more current channel conditions associated with each transmission queue.

5. The system of claim 4 , wherein the modification to each of the queue weights is proportional to an associated channel capacity.

6. The system of claim 4 , wherein the modification is limited to a predetermined minimal value.

7. The system of claim 4 , wherein the modification to each of the queue weights is proportional to an estimation of throughput performance.

8. The system of claim 7 , wherein the estimation of throughput performance is based on at least one of a throughput model, packet encoding rule, and packet transmission time.

9. A method for increasing wireless network throughput, the method comprising: assigning a packet to one of a plurality of transmission queues; and executing a hierarchical scheduling module stored in a computer-readable storage medium, wherein execution of the hierarchical scheduling module by a processing device: selects a priority scheduled packet for transmission, wherein the selection is made in accordance with a weighted scheduling technique utilizing weighted round robin for determining a weight for each transmission queue, assigns queue weights to stations within each transmission queue, determines from which of the plurality of transmission queues a failed packet originated, requeues the failed packet for retransmission at the queue from which the failed packet is determined to have originated, and penalizes a credit register of the determined queue, wherein a transmission queue is activated at a different station when penalizing the credit register of the determined queue results in a predetermined level.

10. The method of claim 9 , wherein the failed packet is requeued at a head of the queue from which the failed packet is determined to have originated.

11. The method of claim 9 , further comprising deferring retransmission of the failed packet.

12. The method of claim 9 , further comprising modifying the assigned queue weights based on one or more current channel conditions associated with each transmission queue.

13. The method of claim 12 , wherein the modification to each of the queue weights is proportional to an associated channel capacity.

14. The method of claim 12 , further comprising limiting the modification to a predetermined minimal value.

15. The method of claim 12 , wherein the modification to each of the queue weights is proportional to an estimation of throughput performance.

16. The method of claim 15 , wherein the estimation of throughput performance is based on at least one of a throughput model, packet encoding rule, and packet transmission time.

17. A non-transitory computer-readable storage medium, having embodied thereon a program executable by a processor to perform a process for increasing wireless network throughput, the process comprising: assigning a packet to one of a plurality of transmission queues; selecting a priority scheduled packet for transmission, wherein the selection is made in accordance with a weighted scheduling technique utilizing weighted round robin for determining a weight for each transmission queue; assigning queue weights to stations within each transmission queue; determining from which of the plurality of transmission queue a failed packet originated; requeuing the failed packet for retransmission at the queue from which the failed packet is determined to have originated; and penalizing a credit register of the determined queue, wherein a transmission queue is activated at a different station when penalizing the credit register of the determined queue results in a predetermined level.