Adaptively adjusting jitter buffer characteristics
View Patent ↗A jitter buffer system having a jitter buffer configured to buffer traffic and a control system coupled to the jitter buffer and configured to determine a first characteristic of the traffic in the jitter buffer, adjust the size of the jitter buffer by a constant when the first characteristic does not satisfy a first constraint for the first characteristic, determine a rate of adjusting the jitter buffer, and change the constant when the rate does not fall within a specified range.
1. A method of operating a control system to dynamically control a jitter buffer in a communication network, the method comprising:
buffering traffic in the jitter buffer;
determining a first characteristic of the traffic in the jitter buffer;
adjusting a size of the jitter buffer by a constant when the first characteristic does not satisfy a first constraint for the first characteristic, wherein the constant indicates an incremental amount of memory in the jitter buffer;
determining a rate of adjusting the size of the jitter buffer by the constant; and
changing the constant when the rate is not within a specified range.
2. The method of claim 1 wherein the first characteristic comprises an amount of time the traffic is delayed in the jitter buffer.
3. The method of claim 1 wherein the first characteristic comprises a level of packet loss of the traffic caused by buffering the traffic in the jitter buffer.
4. The method of claim 1 wherein changing the constant comprises increasing the constant.
5. The method of claim 1 wherein changing the constant comprises decreasing the constant.
6. The method of claim 1 wherein the rate of adjusting the jitter buffer comprises the number of times in a period that the size of the jitter buffer is adjusted.
7. The method of claim 1 wherein the traffic comprises voice over packet traffic.
8. A jitter buffer system comprising:
a jitter buffer configured to buffer traffic; and
a control system coupled to the jitter buffer and configured to determine a first characteristic of the traffic in the jitter buffer, adjust a size of the jitter buffer by a constant when the first characteristic does not satisfy a first constraint for the first characteristic, determine a rate of adjusting the size of the jitter buffer by the constant, and change the constant when the rate is not within a specified range, wherein the constant indicates an incremental amount of memory in the jitter buffer.
9. The jitter buffer system of claim 8 wherein the first characteristic comprises an amount of time the traffic is delayed in the jitter buffer.
10. The jitter buffer system of claim 8 wherein the first characteristic comprises a level of packet loss of the traffic caused by buffering the traffic in the jitter buffer.
11. The jitter buffer system of claim 8 wherein changing the constant comprises increasing the constant.
12. The jitter buffer system of claim 8 wherein changing the constant comprises decreasing the constant.
13. The jitter buffer system of claim 8 wherein the rate of adjusting the jitter buffer comprises the number of times in a period that the size of the jitter buffer is adjusted.
14. The jitter buffer system of claim 8 wherein the traffic comprises voice over packet traffic.
15. A non-transitory computer-readable medium having instructions stored thereon for operating a control system, wherein the instructions, when executed by a processing system, direct the processing system to determine a first characteristic of traffic buffered in a jitter buffer, adjust a size of the jitter buffer by a constant when the first characteristic does not satisfy a first constraint for the first characteristic, determine a rate of adjusting the size of the jitter buffer by the constant, and change the constant when the rate is not within a specified range, wherein the constant indicates an incremental amount of memory in the jitter buffer.