Radio telecommunication system with a multi-sensor receiver station and a plurality of emitter stations transmitting data packets
US5548834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1994 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Jul 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Several emitter stations (MS1-MS4) are allowed to transmit call set-up packets in random access channels and user information packets in traffic channels to a receiver station (BST) which is provided with an array of N sensors (A.sub.l -A.sub.N) and with a receiver (RM) adapted to simultaneously acquire N-1 packets from the emitting stations and to derive therefrom N-1 distinct array output signals (X.sub.1 -X.sub.N-1). During a random access channel (RACH) channel, the identity of the emitting station (MS) as well as the direction of arrival (.theta.) and the power (.sigma.) of its signal are stored in a parameter data base (PDB) together with its weigh vector (W) calculated (WVG) therewith and a traffic channel (TCH) channel allocated (CHC) thereto. During either a RACH or a TCH channel, the weight vectors of a emitting station are provided by the data base and are applied to multipliers (M.sub.1 -M.sub.N-1) which produce the N-1 array output signals. In case of interference between emitting stations using a same TCH channel, another TCH channel is allocated to one of the interfering stations and the weight vectors are updated. The stations also send tracking packets in the RACH …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.