Apparatus and methods of transmitting and receiving a multimedia-broadcast multicast service (MBMS) channel
US7961699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Aug 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitting apparatus which transmits a transmit symbol in orthogonal-frequency division multiplexing (OFDM) is disclosed. The transmitting apparatus includes a unit which provides a unicast channel; a unit which provides a multimedia broadcast multicast service (MBMS) channel; a unit which provides a specific pilot channel which is specific to a specified cell; a unit which provides one or more common pilot channels common to a plurality of cells; and a multiplexing unit which multiplexes the unicast channel, the MBMS channel, the specific pilot channel, and the one or more common pilot channels, and creates the transmit symbol, wherein the multiplexing unit time-division multiplexes, in the same frequency band, a unicast frame which includes the unicast channel, and an MBMS frame which includes the MBMS channel, and wherein an insertion density of the common pilot channel included in the MBMS frame is larger than an insertion density of the specific pilot channel included in the unicast frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.