INCREASING CHANNEL CAPACITY OF WIRELESS LOCAL LOOP VIA POLARIZATION DIVERSITY ANTENNA DISTRIBUTION SCHEME
First Claim
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1. A method of configuring a communication network comprising the steps of:
- (a) providing a wireless local loop network having an arrangement of cells, each of which contains base station wireless transceiver equipment that serves a plurality of fixed customer wireless transceiver sites, said fixed customer wireless transceiver sites being geographically dispersed relative to said base station and communicating with said base station using a prescribed communication signal polarization therebetween, said base station being arranged to interface customer calls with a public telephone switch network (PTSN); and
(b) assigning communication frequency reuse and communication signal polarization diversity among respective cells of said network, so as to satisfy a prescribed carrier to interference ratio (C/I) criterion.
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Abstract
In order to increase the channel capacity of a wireless local loop network, advantage is taken of the fixed location of each subscriber radio, and the ability to independently configure each subscriber'"'"'s antenna, to provide antenna cross polarization isolation into the cellular layout of the WLL network, and thereby provide an additional layer of interference rejection. Such a cross polarization assignment scheme, in combination with frequency reuse allocation, provides a substantial increase in the C/I ratio and thereby allows an expansion of the reuse of frequency channels.
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12 Claims
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1. A method of configuring a communication network comprising the steps of:
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(a) providing a wireless local loop network having an arrangement of cells, each of which contains base station wireless transceiver equipment that serves a plurality of fixed customer wireless transceiver sites, said fixed customer wireless transceiver sites being geographically dispersed relative to said base station and communicating with said base station using a prescribed communication signal polarization therebetween, said base station being arranged to interface customer calls with a public telephone switch network (PTSN); and
(b) assigning communication frequency reuse and communication signal polarization diversity among respective cells of said network, so as to satisfy a prescribed carrier to interference ratio (C/I) criterion. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless local loop communication network comprising:
- an arrangement of cells, each of which contains base station wireless transceiver equipment that serves a plurality of fixed customer wireless transceiver sites, said fixed customer wireless transceiver sites being geographically dispersed relative to said base station and communicating with said base station using a prescribed communication signal polarization therebetween, said base station being arranged to interface customer calls with a public telephone switch network (PTSN); and
a distribution of polarization diversity antennas among said base station wireless transcceiver equipments, and wherein communication frequency reuse and polarization diversity antennas distributed among respective cells of said network are such as to satisfy a prescribed carrier to interference ratio (C/I) criterion. - View Dependent Claims (8, 9, 10, 11, 12)
- an arrangement of cells, each of which contains base station wireless transceiver equipment that serves a plurality of fixed customer wireless transceiver sites, said fixed customer wireless transceiver sites being geographically dispersed relative to said base station and communicating with said base station using a prescribed communication signal polarization therebetween, said base station being arranged to interface customer calls with a public telephone switch network (PTSN); and
Specification