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Optimization of contention paramaters for quality of service of VOIP (voice over internet protocol) calls in a wireless communication network

  • US 9,917,752 B1
  • Filed: 06/24/2011
  • Issued: 03/13/2018
  • Est. Priority Date: 06/24/2011
  • Status: Active Grant
First Claim
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1. A computer-implemented method in an access point of a wireless communication system for optimizing QoS (Quality of Service) for each type of traffic at the access point, the method comprising the steps of:

  • determining a type for traffic received at the access point, and a number of VOIP (Voice Over Internet Protocol) calls;

    queuing the traffic at the access point responsive to the type of traffic;

    receiving measurements for each type of external traffic heard at the access point, the traffic associated with at least one external access point and at least one a wireless device, and including a number of external VOIP calls;

    determining one or more contention parameters responsive to the measurements for each type of external traffic including the number of VOIP calls at the access point and the number of external VOIP calls at the at least one external access point having the prospect of causing interference to the access point, and a quality of service associated with the type of traffic;

    contending for communication bandwidth for each type of traffic in response to the one or more contention parameters; and

    handing-off a wireless device serviced by the access point to an external access point for subsequent service, wherein at least a portion of contention parameters are sent to the external access point during the hand-off;

    wherein a control element that is in communication with and manages both the access point and the external access point, directs the hand-off from the access point to the external access point, and passes the contention parameters from the access point to the external access point; and

    wherein the one or more contention parameters comprise one or more of;

    an AIFS (automatic inter-frame spacing), minimum contention window, and maximum contention window.

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