Random access channel preamble selection
US8879478B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2009 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Sep 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/004
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method of selecting a random access preamble in a radio communication system operable at least on a physical layer and a medium access control layer. Random access preambles are divided into at least two groups, the groups depending on at least one of the following: radio conditions and a size of a message to be transmitted by user equipment. The method comprising: (a) the medium access control layer selecting one of the preamble groups; (b) the medium access control layer randomly selecting one random access preamble within the selected group; (c) the medium access control layer signaling the selected random access preamble to the physical layer; and (d) the physical layer generating and transmitting the generated random access preamble.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.