Sending and reducing uplink feedback signaling for transmission of MBMS data
US8369860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2007 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Aug 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0866
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention is related to a method and system for sending and reducing uplink feedback signaling by a wireless transmit/receive unit (WTRU) related to transmission of multimedia broadcast multicast service (MBMS) data over a high speed downlink packet access (HSDPA) channel. A Node B may pre-allocate a time/frequency region or a common channelization code for the feedback. A triggering criterion for reporting a channel quality indicator (CQI) is set and WTRUs send a CQI to a Node B only if the triggering criterion is satisfied. The triggering criterion may be a current operating CQI value at the Node B, or based on erroneous transport block reception statistics, or a predetermined time period. A feedback reduction method related to ACK/NACK includes the WTRU sending an indication of an average number of transmissions needed to successfully decode the data instead of sending an ACK/NACK for every transmission interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.