Method of data request scheduling in peer-to-peer sharing networks
First Claim
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1. A method comprising:
- logically dividing streaming media content to be played by a peer in a peer-to-peer (P2P) network into a plurality of time-ordered data chunks;
partitioning a buffer map on the peer into a plurality of time-urgency ordered regions;
defining, for each of the regions, a respective target fullness amount;
populating the buffer map with information that identifies at least a plurality of to-be-played data chunks of the streaming media content;
populating the buffer map with information that indicates which of the plurality of to-be-played data chunks are available at the peer;
assigning each the plurality of to-be-played data chunks to one of the plurality of time-urgency ordered regions of the buffer map according to relative time urgency of the plurality of to-be-played data chunks; and
determining a schedule for requesting one or more of the to-be-played data chunks from one or more neighboring peers based at least in part on the buffer map and the defined target fullness amounts of the regions.
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Abstract
Systems and methods are provided for scheduling data requests for streaming media data in a Peer-to-Peer (P2P) network. A method is provided to increase a peer'"'"'s contribution to the whole P2P network by partitioning the data chunks to request into several regions according to their relative time urgency, and data requests are scheduled in an effort to maintain availability of data in each region to a corresponding predefined target amount.
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Citations
25 Claims
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1. A method comprising:
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logically dividing streaming media content to be played by a peer in a peer-to-peer (P2P) network into a plurality of time-ordered data chunks; partitioning a buffer map on the peer into a plurality of time-urgency ordered regions; defining, for each of the regions, a respective target fullness amount; populating the buffer map with information that identifies at least a plurality of to-be-played data chunks of the streaming media content; populating the buffer map with information that indicates which of the plurality of to-be-played data chunks are available at the peer; assigning each the plurality of to-be-played data chunks to one of the plurality of time-urgency ordered regions of the buffer map according to relative time urgency of the plurality of to-be-played data chunks; and determining a schedule for requesting one or more of the to-be-played data chunks from one or more neighboring peers based at least in part on the buffer map and the defined target fullness amounts of the regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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logically dividing streaming media content to be played by a peer in a peer-to-peer (P2P) network into a plurality of time-ordered data chunks; partitioning a buffer map on the peer into a plurality of time-urgency ordered regions; defining, for each of the regions, a respective target fullness amount; populating the buffer map with information that identifies at least a plurality of to-be-played data chunks of the streaming media content; populating the buffer map with information that indicates which of the plurality of to-be-played data chunks are available at the peer; assigning each the plurality of to-be-played data chunks to one of the plurality of time-urgency ordered regions of the buffer map according to relative time urgency of the plurality of to-be-played data chunks; for each of the time-urgency ordered regions, determining whether an amount of available to-be-played data chunks therein satisfies the region'"'"'s corresponding target fullness amount; and when determined that the amount of available to-be-played data chunks in one of the time-urgency ordered regions does not satisfy the region'"'"'s corresponding target fullness amount, selecting an unavailable to-be-played data chunk from the one of the time-urgency ordered regions for requesting from a neighboring peer. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A system comprising:
a peer communicatively coupled to one or more other peers via a peer-to-peer (P2P) network said peer comprising; a player for rendering streaming content; a buffer for buffering streaming content for playing by the player; a buffer map that includes a) information identifying at least a plurality of to-be-played time-ordered data chunks of the streaming media content, and b) a bitmap indicating which of the plurality of to-be-played data chunks are available at the peer; wherein the buffer map is partitioned into a plurality of time-urgency ordered regions, and each the plurality of to-be-played data chunks is assigned to one of the plurality of time-urgency ordered regions of the buffer map according to relative time urgency of the plurality of to-be-played data chunks; a scheduler for requesting one or more of the to-be-played data chunks from one or more neighboring peers based at least in part on the buffer map and target fullness amounts predefined for the plurality of time-urgency ordered regions. - View Dependent Claims (25)
Specification