Method and apparatus for improving link performance and capacity of a sectorized CDMA cellular communication network
AssigneeNortel Networks Limited
InventorAshvin Chheda
Life of this patent
Estimating the term…
Abstract
A system and method for improving link performance and network capacity of a CDMA network is described. In a preferred embodiment, at each sector site, antennas having a relatively narrow horizontal beamwidth are used as transmit antennas, while antennas having a relatively wide horizontal beamwidth are used as receive antennas. Narrow beamwidth antennas are also used to implement hybrid transmit/receive antennas.
Claims15
A method of improving link capacity of a sectorized code division multiple access (“CDMA”) network, the method comprising steps of:
- (a) installing at at least one sector site of said CDMA network a first antenna having a first beamwidth;
- and
- (b) installing at said at least one sector site of said CDMA network a second antenna having a second beamwidth;
- wherein said first beamwidth is greater than said second beamwidth;
- and
- wherein said first antenna is a receive-only antenna and said second antenna is a transmit-only antenna.
A code division multiple access (“CDMA”) network having improved link capacity and performance, the CDMA network comprising:
- a plurality of cells each comprising a plurality of sectors, wherein each of said sectors includes a sector site;
- a first antenna installed at each of said sector sites;
- and
- a second antenna installed at each of said sector sites;
- wherein at each sector site, a beamwidth of said first antenna of said sector site is greater than a beamwidth of said second antenna of said sector site;
- and
- wherein said first antenna is a receive-only antenna and said second antenna is a transmit-only antenna.
A method of improving link capacity of a sectorized code division multiple access (“CDMA”) network, the method comprising steps of:
- (a) installing at at least one sector site of said CDMA network a first antenna having a first beamwidth;
- and
- (b) installing at said at least one sector site of said CDMA network a second antenna having a second beamwidth equal to two-thirds of said first beamwidth;
- and
- wherein said first antenna is a receive-only antenna and said second antenna is a transmit-only antenna.
A code division multiple access (“CDMA”) network having improved link capacity and performance, the CDMA network comprising:
- a plurality of cells each comprising a plurality of sectors, wherein each of said sectors includes a sector site;
- a first antenna installed at each of said sector sites;
- and
- a second antenna installed at each of said sector sites;
- wherein at each sector site, a beamwidth of said second antenna of said sector site is equal to two thirds the beamwidth of first second antenna of said sector site;
- and
- wherein said first antenna is a receive-only antenna and said second antenna is a transmit-only antenna.
Dependencies are inferred from the claim text.