Physical layer structures and initial access schemes in an unsynchronized communication network
US7738437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2004 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Dec 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Physical layer structures and related access schemes for unsynchronized communication networks are provided. Access channel information, preferably including a common synchronization code associated with all transceiver stations in a communication network and a cell-specific synchronization code uniquely associated with one of the transceiver stations, is modulated onto at least one set of time-continuous signal components of a communication signal. In order to access the communication network, communication terminals search for the access channel information in one or more sets of time-continuous signal components and synchronization parameters are then determined based on a location of the access channel information in the sets of time-continuous signal components. Some embodiments of the invention provide for joint frame synchronization and coarse timing synchronization. In further embodiments, the communication signal also includes a scattered pilot channel onto which a portion of the access channel information, preferably the cell-specific synchronization code, is modulated. The pilot channels may then be re-used for initial access operations in addition to its conventional us…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.