APPARATUS AND METHOD FOR MOBILE ASSISTED ADAPTIVE FFR
First Claim
1. A method of fractional frequency reuse in a communication network, said method comprising:
- dividing a frequency band into a plurality of sub-bands according to a Fractional Frequency Reuse (FFR) scheme to define a FFR allocation of said band for a plurality of base stations, each of said base stations associated with a respective region;
at a first base station of said plurality of base stations, said first base station associated with a first region;
establishing communication with a mobile terminal in said first region on one of said plurality of sub-bands according to said FFR allocation;
at a second base station of said plurality of base stations, said second base station associated with a second region;
transmitting on said one of said plurality of sub-bands according to said FFR allocation;
receiving an indication of a coverage problem detected at said mobile terminal due to interference from said second base station on said one of said plurality of sub-bands; and
in response to said receiving said indication, decreasing a transmit power level for said one of said plurality of sub-bands in said second region.
3 Assignments
0 Petitions
Accused Products
Abstract
In a method of fractional frequency reuse in a communication network, a frequency band is divided into a plurality of sub-bands according to a Fractional Frequency Reuse (FFR) scheme to define a FFR allocation of the band for a plurality of bases stations, each of the base stations being associated with a respective region. At a first base station of the plurality of base stations, the first base station associated with a first region, communication with a mobile terminal in the first region is established on one of the plurality of sub-bands according to the FFR allocation. A second base station of the plurality of base stations, the second base station associated with a second region, transmits on the one of the plurality of sub-bands according to the FFR allocation; receives an indication of a coverage problem detected at the mobile terminal due to interference from the second base station on the one of the plurality of sub-bands; and in response to the receiving the indication, decreases a transmit power level for the one of the plurality of sub-bands in the second region.
-
Citations
16 Claims
-
1. A method of fractional frequency reuse in a communication network, said method comprising:
-
dividing a frequency band into a plurality of sub-bands according to a Fractional Frequency Reuse (FFR) scheme to define a FFR allocation of said band for a plurality of base stations, each of said base stations associated with a respective region; at a first base station of said plurality of base stations, said first base station associated with a first region; establishing communication with a mobile terminal in said first region on one of said plurality of sub-bands according to said FFR allocation; at a second base station of said plurality of base stations, said second base station associated with a second region; transmitting on said one of said plurality of sub-bands according to said FFR allocation; receiving an indication of a coverage problem detected at said mobile terminal due to interference from said second base station on said one of said plurality of sub-bands; and in response to said receiving said indication, decreasing a transmit power level for said one of said plurality of sub-bands in said second region. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A mobile terminal comprising logic operable to:
-
establish a connection in one of a plurality of sub-bands to a first base station associated with a first region, wherein said plurality of sub-bands are allocated to said first base station according to a Fractional Frequency Reuse (FFR) scheme; detect a coverage problem due to interference on said one of said plurality of sub-bands from a second base station associated with a second region, wherein said plurality of sub-bands are allocated to said second base station according to said Fractional Frequency Reuse (FFR) scheme; and send an indication of said coverage problem to said second base station. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
Specification