Sub-channels for the random access channel in time division duplex
US6771632B2 · kind B2 · utility
8Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0866
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Sub-channels are defined for a physical random access channel of a wireless time division duplex communication system using code division multiple access. The sub-channels carry information between system users and a system network. A series of radio frames have a sequence of timeslots. For a particular timeslot number of the sequence, each sub-channel of the particular timeslot number is uniquely defined by one radio frame of the series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.