MOBILE ASSISTED ADAPTIVE FFR

• US 20110075622A1
• Filed: 07/03/2009
• Published: 03/31/2011
• Est. Priority Date: 07/03/2009
• Status: Abandoned Application

• Current Assignee: Rockstar Bidco LP (Rockstar Consortium Inc.)
• Original Assignee: Rockstar Bidco LP (Rockstar Consortium Inc.)
• Inventors: Vrzic, Sophie, Fong, Mo-Han
• Application Number:
  US12/806,183
• Publication Number:
  US 20110075622A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 16/12 Fixed resource partitioning
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• CPC Class Codes: H04W 72/541 using the level of interference

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.

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 bases 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.