H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 36/06 (2009.01) H04W 36/20 (2009.01) H04W 52/42 (2009.01) H04W 72/04 (2009.01)
Patent
CA 2700677
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.
Laroia Rajiv
Li Junyi
Uppala Sathyadev Venkata
Qualcomm Incorporated
Smart & Biggar
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