Compression using program tokens

Details Compression using program tokens Compression using program tokens

2007-10-30

2007-10-30

Phunkulh, Bob A. (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S389000, C370S352000

Reexamination Certificate

active

10368659

ABSTRACT:
Systems and methods for improving performance of communications over a limited-bandwidth communication link by token-based compression of messages. In one embodiment, a mobile station parses an SIP/SDP message into pieces, wherein each piece comprises a static component and a variable component. The static component comprises fixed-format data and may be intermingled with the variable component. The static component is replaced by a corresponding token. In one embodiment, the token comprises a two-byte identifier. The remaining variable component may also be compressed. The compressed message is received by an SIP proxy server that can identify the static component of each piece of the SIP/SDP message from the received token. The SIP proxy server can then replace the two-byte token with the original static component, and reconstruct the message, in which parts of the static component may be intermingled with parts of the variable component.

REFERENCES:
patent: 6788676 (2004-09-01), Partanen et al.
patent: 6807173 (2004-10-01), Lee et al.
patent: 2002/0057716 (2002-05-01), Svanbro et al.
patent: 2002/0129236 (2002-09-01), Nuutinen
patent: 2004/0085949 (2004-05-01), Partanen et al.

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