System for expanding a parameter encoding field in a message to allow additional parameters to be added while maintaining compatibility with existing parameter encodings
US6529505B1 · kind B1 · utility
6Cited by
5References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 14, 1998 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jul 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for expanding a parameter encoding field in a new communications protocol that is compatible with an old protocol. An unused command parameter in an old protocol is used to indicate an expanded parameter encoding field in a new protocol. Parameter encodings from the old protocol are unchanged in the new protocol. A system communicating using the old protocol recognizes all parameters from the old protocol and ignores parameters from the new protocol. A system communicating using the new protocol recognizes parameters from both the old and new protocols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.