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Peer-To-Peer Method of Quality of Service (QoS) Probing and Analysis and Infrastructure Employing Same

  • US 20060209701A1
  • Filed: 06/02/2006
  • Published: 09/21/2006
  • Est. Priority Date: 02/01/2002
  • Status: Active Grant
First Claim
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1. A method of probing quality of service parameters in a peer-to-peer network between at least a first peer and a second peer, comprising the steps of:

  • generating by the first peer a first and a second probing packet, each probing packet including a first timestamp;

    sending the first probing packet and the second probing packet to the second peer, the first timestamp of each probing packet indicating a time at which that probing packet is sent;

    receiving from the second peer a first acknowledgement packet and a second acknowledgement packet corresponding to the first probing packet and the second probing packet, each of said acknowledgement packets including the first timestamp of the probing packet to which the acknowledgement packet corresponds, a second timestamp indicating a time at which the corresponding probing packet arrived at the second peer, and a third timestamp indicating a time at which the acknowledgement packet was sent by the second peer; and

    calculating quality of service parameters for the network as a function of the first timestamp, the second timestamp, and the third timestamp of both the first acknowledgement packet and the second acknowledgement packet.

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