Method and apparatus for providing soft hand-off in IP-centric wireless CDMA networks
US7072317B2 · kind B2 · utility
5Cited by
8References
4Claims
0Family size
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Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Oct 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Virtual Soft-Hand-off method for wireless IP-centric CDMA networks whose routers, hosts, and mobile stations have small group multicast (SGM) capability comprises setting up an explicit synchronous multicast session among a small group of participants with dynamic group membership. Packets transmitted over the multicast session are time stamped to help maintain synchronization, and the receivers recover multiple packet flows from the multiple received signals concurrently and combine them to create a single packet flow at higher layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.