US 2009/0245197 A1 · Methods and systems to mitigate inter-cell interference

Abstract

The present invention provides methods and devices for mitigating inter-cell interference in communication environments having a plurality of cells. In some embodiments, a time-frequency transmission resource that includes multiple sub-carriers over multiple OFDM symbol intervals is partitioned into a first zone and a second zone. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells. In the second zone, transmissions are transmitted on at least one frequency sub-band which is used by less than all of the plurality of cells, so as to mitigate inter-cell interference. In some embodiments, in the first zone transmissions are transmitted using a transmission power which is common to all of the plurality of cells and in the second zone transmissions are transmitted using a transmission power which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.

Claims37

Dependent claims

A method for execution in an OFDM communications environment having a plurality of cells, comprising:

for a transmitter corresponding to a first cell;
partitioning a time-frequency transmission resource comprising a plurality of sub-carriers over a plurality of OFDM symbol intervals into a first zone and a second zone;
in the first zone, transmitting on at least one set of sub-carriers which is used by all of the plurality of cells;
in the second zone, transmitting on at least one set of sub-carriers which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.

1 more element

Dependencies are inferred from the claim text.

Methods and systems to mitigate inter-cell interference

Life of this patent

Methods and systems to mitigate inter-cell interference

Life of this patent

Abstract

Claims37