Transmission power control method and radio control apparatus in mobile packet communication system
US7366536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2002 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Sep 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A downlink user data signal destined for a specific mobile station (4-1) is always transmitted from a single base station while a plurality of base stations (3-1, 3-2, 3-3, . . . ) being switched from one to another. A first downlink signal destined for the mobile station (4-1) is transmitted from one or a plurality of base stations through a first downlink radio channel (downlink A-DPCR). The transmission power of a second downlink radio channel (PDSCH, HS-SCCH) for transmitting a second downlink signal from the base station (3-1) to the mobile station (4-1) is provided with an offset relative to the transmission power of the first downlink radio channel from the base station (3-1) to the mobile station (4-1), thereby linking the transmission power of the second downlink radio channel with the transmission power of the first downlink radio channel. If the number of diversity branches, i.e., the number of base stations (3-1, 3-2) simultaneously communicating with the mobile station (4-1) on the first downlink radio channel (downlink A-DPCH) is large, the offset for the transmission power of the second downlink radio channel (PDSCH, HS-SCCH) is increased. If the number of diversity …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.