Methods and systems for transmission of orthogonal frequency division multiplexed symbols
US7813261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2006 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Mar 7, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2655
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In some embodiments of the present invention there is provided a frame structure for transmitting an integer number of OFDM symbols in which some of the OFDM symbols are to be transmitted in a unicast format and some of the OFDM symbols are to be transmitted in a broadcast format. The frame structure includes partitioning of a frame into at least two portions to accommodate both unicast and broadcast modes in the frame. The frame structure is used for transmitting multiple frames in a serial manner from at least one transmitter. The unicast mode supports transmission of OFDM symbols from a single transmitter to a single receiver. The broadcast mode supports transmission of OFDM symbols from multiple transmitters to all receivers within range of the multiple transmitters. The multicast mode supports transmission of OFDM symbols from multiple transmitters to multiple receivers within range of the multiple transmitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.