Uncoordinated microwave paths in coordinated frequency bands
First Claim
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1. A method for operating an uncoordinated microwave path in coordinated frequency bands comprising:
- determining a safe area defined by and including the union of a first coordination area of a first base station at a first site and a second coordination area of a second base station at a second site, includingdetermining interference contours of the first coordination area from an antenna pattern at the first base station, transceiver power transmitting from the first base station on a first frequency and a second frequency of a frequency pair, and an Effective Isotropic Radiated Power (EIRP) associated with the first base station, anddetermining interference contours of the second coordination area from an antenna pattern at the second base station, transceiver power transmitting from the second base station on a first frequency and a second frequency of the frequency pair, and an EIRP associated with the second base station,where the interference contours represent co-channel interference within the safe area, created by transmitting from the first base station and second base station, as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level;
operating a first coordinated microwave path from the first base station to the second base station on the frequency pair using frequency division duplex-time division duplex (FDD-TDD);
operating a second coordinated microwave path from the second base station to the first base station on the frequency pair using FDD-TDD such that the first frequency and the second frequency cause the co-channel interference; and
transmitting on an uncoordinated microwave path operating with time division duplex (TDD) from a transceiver portion of the first base station to a transceiver portion at a third site located in the safe area on the first and/or second frequency using a side lobe of an antenna of the first base station.
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Abstract
A system is described. The system includes a fixed microwave path pair between a first site and a second site and an additional microwave path between the first site and a third site. A transceiver portion of the first site and a transceiver portion of the second site are configured to transmit on the fixed microwave path pair on TDD-FDD reversed paired frequencies. The transceiver portion of the first site is configured to transmit to the transceiver portion of the third site on one frequency of the paired frequencies using the side lobe radiation of an antenna at the first site.
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Citations
14 Claims
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1. A method for operating an uncoordinated microwave path in coordinated frequency bands comprising:
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determining a safe area defined by and including the union of a first coordination area of a first base station at a first site and a second coordination area of a second base station at a second site, including determining interference contours of the first coordination area from an antenna pattern at the first base station, transceiver power transmitting from the first base station on a first frequency and a second frequency of a frequency pair, and an Effective Isotropic Radiated Power (EIRP) associated with the first base station, and determining interference contours of the second coordination area from an antenna pattern at the second base station, transceiver power transmitting from the second base station on a first frequency and a second frequency of the frequency pair, and an EIRP associated with the second base station, where the interference contours represent co-channel interference within the safe area, created by transmitting from the first base station and second base station, as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level; operating a first coordinated microwave path from the first base station to the second base station on the frequency pair using frequency division duplex-time division duplex (FDD-TDD); operating a second coordinated microwave path from the second base station to the first base station on the frequency pair using FDD-TDD such that the first frequency and the second frequency cause the co-channel interference; and transmitting on an uncoordinated microwave path operating with time division duplex (TDD) from a transceiver portion of the first base station to a transceiver portion at a third site located in the safe area on the first and/or second frequency using a side lobe of an antenna of the first base station. - View Dependent Claims (13)
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2. A method for operating an uncoordinated microwave path in coordinated frequency bands comprising:
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determining a safe area defined by and including the union of a first coordination area of a first base station at a first site and a second coordination area of a second base station at a second site, including determining interference contours of the first coordination area from an antenna pattern at the first base station, transceiver power transmitting from the first base station on a first frequency and a second frequency of a frequency pair, and an Effective Isotropic Radiated Power (EIRP) associated with the first base station, and determining interference contours of the second coordination area from an antenna pattern at the second base station, transceiver power transmitting from the second base station on a first frequency and a second frequency of the frequency pair, and an EIRP associated with the second base station, where the interference contours represent co-channel interference within the safe area, created by transmitting from the first base station and second base station, as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level; operating a first coordinated microwave path from the first base station to the second base station on the frequency pair using frequency division duplex-time division duplex (FDD-TDD); operating a second coordinated microwave path from the second base station to the first base station on the frequency pair using FDD-TDD such that the first frequency and the second frequency cause the co-channel interference; and transmitting on an uncoordinated microwave path operating with time division duplex (TDD) from a transceiver portion at a third site located in the safe area to a transceiver portion of the first base station on the first frequency and/or second frequency using a side lobe of an antenna of the first base station. - View Dependent Claims (3, 14)
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4. A method for operating an uncoordinated microwave path in coordinated frequency bands comprising:
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determining a safe area defined by and including the union of a first coordination area of a first base station at a first site and a second coordination area of a second base station at a second site, including determining interference contours of the first coordination area from an antenna pattern at the first base station, transceiver power transmitting from the first base station on a first frequency and a second frequency of a frequency pair, and an Effective Isotropic Radiated Power (EIRP) associated with the first base station, and determining interference contours of the second coordination area from an antenna pattern at the second base station, transceiver power transmitting from the second base station on a first frequency and a second frequency of the frequency pair, and an EIRP associated with the second base station, where the contours represent co-channel interference within the safe area, created by transmitting from the first base station and second base station, as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level; operating a first coordinated microwave path from the first site base station to the second base station on the frequency pair using frequency division duplex-time division duplex (FDD-TDD); operating a second coordinated microwave path from the second base station to the first base station on the frequency pair using FDD-TDD such that the first frequency and the second frequency cause the co-channel interference; and determining configurations for one or more transceiver portions of one or more new sites in the safe area, the transceiver portion of each new site to be configured to transmit on an uncoordinated microwave path operating with time division duplex (TDD) to the transceiver portion of the first base station on the first frequency and/or second frequency using a side lobe of an antenna of the first base station. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A system for operating an uncoordinated microwave path in coordinated frequency bands comprising:
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a first base station at a first site, the first base station comprising a transceiver portion; a second base station at a second site, the second base station comprising a transceiver portion, wherein the transceiver portion of the first base station and the transceiver portion of the second base station are configured to provide a first coordinated microwave path from the first base station to the second base station on a frequency pair using frequency division duplex (FDD) and to provide a second coordinated microwave path from the second base station to the first base station on the frequency pair using FDD such that a first frequency and a second frequency of the frequency pair operate with frequency division duplex-time division duplex (FDD-TDD) so as to cause co-channel interference; and a transceiver portion at a third site, the transceiver portion of the third site configured to transmit to or receive from the transceiver portion of the first base station on an uncoordinated microwave path operating with time division duplex (TDD) on the first frequency and/or the second frequency using a side lobe of an antenna of the first base station, the third site located in a safe area defined by and including the union of a first coordination area of the first base station and a second coordination area of the second base station and the safe area being subject to the co-channel interference created by transmitting from the first base station and the second base station as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level.
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11. An auxiliary station comprising:
a transceiver portion located in a safe area defined by and including the union of a first coordination area of a first base station at a first site and a second coordination area of a second base station at a second site, the safe area being subject to co-channel interference created by transmitting from the first base station and the second base station on a first frequency and a second frequency using frequency division duplex-time division duplex (FDD-TDD) as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level, the transceiver portion configured to transmit to and receive from a transceiver portion of the first base station on an uncoordinated microwave path operating with time division duplex (TDD) on the first frequency and/or a second frequency using a side lobe of an antenna of the first base station.
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12. A first base station comprising:
a transceiver portion at a first site configured to transmit to and receive from a transceiver portion of a second base station at a second site on a coordinated microwave path pair on a first frequency and a second frequency using frequency division duplex-time division duplex (FDD-TDD), the transceiver portion of the first base station further configured to transmit to and receive from a transceiver portion at a third site on an uncoordinated microwave path operating with time division duplex (TDD) on the first frequency and/or second frequency using a side lobe of an antenna of the first base station, the third site located in a safe area, the safe area defined by and including the union of a first coordination area of the first base station and a second coordination area of the second base station, the safe area being subject to co-channel interference created by transmitting from the first base station and the second base station on the first frequency and the second frequency as a result of which no foreign transceiver can operate on a different coordinated microwave path on the first frequency or the second frequency in the safe area without being subjected to or causing interference greater than a permissible level.
Specification