Method and system for code reuse and capacity enhancement using null steering
US8149895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Jul 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The number of users and data capacity of wireless systems are increased by employing apparatus and method for increasing the number of spreading codes available in the system by providing a mechanism to reuse the already allocated spreading code or use the codes that may correlate to those already being used within the same sector/cell. This, in return, provides capacity improvement proportional to the number of added base station (BS) antennas for each cell. An antenna null steering technique for code allocation maintains the cross correlation properties of the codes only for the desired user and to obtain a gain in capacity improvement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.