METHOD OF CREATING AND UTILIZING DIVERSITY IN A MULTIPLE CARRIER COMMUNICATION SYSTEM

Title:

METHOD OF CREATING AND UTILIZING DIVERSITY IN A MULTIPLE CARRIER COMMUNICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO2004015877

Kind Code:

A3

Abstract:

In many cellular systems, reusing spectrum bandwidth, creates problems in boundary regions between the cells and sectors where the signal strength received from adjacent base stations or adjacent sector transmissions of a single base station may be nearly equivalent. The invention creates a new type of diversity, referred to as multiple carrier diversity by utilizing multiple carriers, assigning different power levels to each carrier frequency at each base station, and/or offsetting sector antennas. The cell and/or sector coverage areas can be set so as to minimize or eliminate overlap between cell and/or sector boundary regions of different carrier frequencies. Mobile nodes traveling throughout the system can exploit multiple carrier diversity by detecting carriers and selecting to use a non-boundary carrier based on other system criteria in order to improve performance. Boundary carriers may, but need not be, identified and excluded from consideration for use by a wireless terminal.

Inventors:

LAROIA RAJIV (US)
LI JUNYI (US)
UPPALA SATHYADEV VENKATA (US)

Application Number:

PCT/US2003/024772

Publication Date:

April 29, 2004

Filing Date:

August 07, 2003

Export Citation:

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Assignee:

FLARION TECHNOLOGIES INC (US)
LAROIA RAJIV (US)
LI JUNYI (US)
UPPALA SATHYADEV VENKATA (US)

International Classes:

H04B7/005; H04W76/04; H04L12/56; H04W52/02; H04W52/60; H04W72/00; H04W88/02; H04M1/73; H04W24/00; H04W52/08; H04W52/28; H04W56/00; H04W68/02; (IPC1-7): H04Q7/20

Foreign References:

US6546252B1	2003-04-08
US6611506B1	2003-08-26
US6021123A	2000-02-01
US6690936B1	2004-02-10
US6308080B1	2001-10-23
US6400703B1	2002-06-04
US6498934B1	2002-12-24

Other References: