Reference signal sounding for uplink pilot time slot in wireless communication system
US8320267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2009 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Nov 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0044
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless terminal operating in TDD mode transmits a plurality of sounding reference signals using an assigned maximum sounding reference signal (SRS) bandwidth (BW) size. At least one of the sounding reference signals is transmitted in a corresponding uplink pilot time slot (UpPTS) region of a special sub-frame of a radio frame wherein, in the frequency dimension, an uplink BW center is misaligned with a BW center of the SRS in the UpPTS region, a maximum SRS BW size in the UpPTS region is an even number of resource blocks with prime factors from a set of {2, 3, 5}, and the maximum SRS BW having a size in number of resource blocks less than or equal to (NRBUL−6·NRA) where NRA is a number of Random Access Channel (RACH) opportunities in the UpPTS region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.