Random access design for high doppler in wireless networks
US8199706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2007 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
UE-initiated accesses within a cellular network are optimized to account for Doppler shift. A user equipment (UE) receives information that designates a particular access slot as high-speed and designates another access slot as low-speed within a given cell. The UE determines its relative speed to a serving base station (NodeB) within the cell. The UE selects either a baseline structure or an alternate structure if the relative speed is less than a threshold value or only an alternate structure if the relative speed exceeds the threshold value. The UE transmits a signal to the NodeB using the selected structure, such that the baseline structure is transmitted only in the designated low-speed access slot and that the alternate structure is transmitted only in the designated high-speed request slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.