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US 7,065,087 B2Granted
Performing compression of user datagram protocol packets
AssigneeCisco Technology, Inc.
InventorsTmima Koren, Walter L. Robinson, Jagdish V. Sonti, Nathan A. Mitchell
Life of this patent
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Abstract
Performing compression includes receiving at a compressor a flow comprising packets, where each packet has a packet identifier. The packet identifiers are associated with a predetermined increment, but any change in the predetermined increment is ignored. The packets are compressed, and the flow is transmitted to a decompressor.
Claims21
A method for performing compression, comprising:
- receiving at a compressor a flow comprising a plurality of packets, each packet having a packet identifier, the packet identifiers associated with a predetermined increment;
- ignoring a change in the predetermined increment associated with the packet identifiers;
- compressing the plurality of packets;
- transmitting the flow to a decompressor;
- and
- determining that an inactive time associated with the flow has exceeded a maximum allowed inactivity period, the flow having a context identifier.
3 more elements
A system for performing compression, comprising:
- a compressor operable to:
- receive a flow comprising a plurality of packets, each packet having a packet identifier, the packet identifiers associated with a predetermined increment;
- ignore a change in the predetermined increment associated with the packet identifiers;
- compress the plurality of packets;
- and
- transmit the flow;
- and
- a decompressor coupled to the compressor operable to decompress the flow;
- and further operable to:
- determine that an inactive time associated with the flow has exceeded a maximum allowed inactivity period, the flow having a context identifier.
7 more elements
Logic for performing compression, the logic embodied in a medium and operable to:
- receive at a compressor a flow comprising a plurality of packets, each packet having a packet identifier, the packet identifiers associated with a predetermined increment;
- ignore a change in the predetermined increment associated with the packet identifiers;
- compress the plurality of packets;
- transmit the flow to a decompressor;
- and
- determine that an inactive time associated with the flow has exceeded a maximum allowed inactivity period, the flow having a context identifier.
3 more elements
A method for performing compression, comprising:
- receiving at a compressor a flow comprising a plurality of packets, each packet having a packet identifier, the packet identifiers associated with a predetermined increment;
- ignoring a change in the predetermined increment associated with the packet identifiers;
- compressing the plurality of packets;
- transmitting the flow to a decompressor;
- receiving the flow at the decompressor, each packet of the flow having a sequence number;
- detecting a skip in the sequence numbers of the plurality of packets of the flow;
- accepting the flow having the skip in the sequence numbers;
- determining that an inactive time associated with the flow has exceeded a maximum allowed inactivity period, the flow having a context identifier;
- establishing that the flow comprises a compressed packet in the place of a full header packet;
- and
- establishing that the full header packet is lost.
8 more elements
A system for performing compression, comprising:
- means for receiving at a compressor a flow comprising a plurality of packets, each packet having a packet identifier, the packet identifiers associated with a predetermined increment;
- means for ignoring a change in the predetermined increment associated with the packet identifiers;
- means for compressing the plurality of packets;
- means for transmitting the flow to a decompressor;
- and
- means for determining that a previous inactive time of a previous flow has exceeded a previous maximum allowed inactivity period, the previous flow associated with a context identifier.
3 more elements
A method for performing compression, comprising:
- receiving at a compressor a flow comprising a plurality of packets, each packet having a packet identifier, the packet identifiers associated with a predetermined increment;
- ignoring a change in the predetermined increment associated with the packet identifiers;
- determining at the compressor that a previous inactive time of a previous flow has exceeded a previous maximum allowed inactivity period, the previous flow associated with a context identifier, the previous inactive time exceeding the previous maximum allowed inactivity period prior to exceeding an expiration period;
- establishing that the context identifier is available;
- assigning the context identifier to the flow in response to establishing that the context identifier is available;
- appending a full header packet corresponding to the context identifier to the flow;
- compressing the plurality of packets;
- transmitting the flow to a decompressor;
- receiving the flow at the decompressor, each packet of the flow having a sequence number;
- detecting a skip in the sequence numbers of the plurality of packets of the flow;
- accepting the flow having the skip in the sequence numbers;
- determining that an inactive time associated with the flow has exceeded a maximum allowed inactivity period, the flow having a context identifier;
- establishing that the flow comprises a compressed packet in the place of the full header packet;
- and
- establishing that the full header packet is lost.
12 more elements
Dependencies are inferred from the claim text.