Utilization of plural multiple access types for mobile telecommunications
US6483826B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0866
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first telecommunications system (201) has at least partially geographically overlapping coverage with a second telecommunications system (202), with radio transmission access in the first telecommunications system utilizing code division multiple access (CDMA) with a time division multiple access (TDMA) component. A base station (BS) of the first telecommunications system communicates over an air interface with a subscriber station (SS) and broadcasts a common broadcast physical channel (BPCH) on at least an active carrier/timeslot combination (C/TS). The common broadcast physical channel includes broadcast system identity information. The subscriber station uses the broadcast system identity information to distinguish between transmissions of the first telecommunications system and the second telecommunications system. Moreover, the subscriber station uses the broadcast system identity information for framing transmissions in the first telecommunications system. The base station of the first system broadcasts at least two common broadcast physical channels active on different timeslots. Preferably, a fixed direct sequence CDMA code is employed for the common broadcast physical c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.