Method in a cellular radio communications system
US6434396B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1998 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Jun 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W68/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method in a cellular radio communications system of minimising the set-up delay for a mobile terminated message, which is divided into one or more data units (DU1-DUi). The inventive method is carried out by multicasting the message (DU1-DUi) to at least two selected base stations (BS1-BS4) in the vicinity of the mobile station (MS). Thereafter, at least one first data unit (DU1) of the message (DU1-DUi) is simultaneously transmitted in an initial signal (P(DU1)), which is sent out from the base stations (BS1-BS4) and directed to the mobile station (MS). Any subsequent data units (DU2-DUi) in the message (DU1-DUi) are unicast (BS2; CHX(DU2)-CHX(DUi)) to the mobile station (MS), via one of the originally selected base stations (BS2). The mobile station (MS) returns a positive acknowledgement (ACK) after each correctly received data unit (DU1-DUi).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.