Sectorized cellular mobile radio system with sector signalling and control in predetermined time slots
US5774790A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Oct 15, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cellular mobile radio system comprises cells divided into P sectors each having its own timebase. The system uses time division multiple access and accordingly transmission is effected in bursts each transmitted during a time slot, or channel time slot, of predetermined rank relative to a reference of the timebase of the sector concerned. N time slots form a frame which repeats periodically. A control channel is reserved for each sector for transmitting signalling and control data, a different control channel being associated with each sector. The timebase of each sector is shifted a predetermined number of time slots relative to the timebases of the other sectors of the same cell. The offsets are such that the control channels relating to each sector are conveyed at different times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.