Multicarrier radio receiver and method for receiving multiple carriers

摘要

A radio receiver receives multiple radio frequency (RF) carriers where each RF carrier corresponds to a logical entity or object used in multi-carrier communications called a cell. A receiving radio node receives signals on serving cells, including a serving cell on a primary carrier and a serving cell on a secondary carrier, and on neighboring cells, including a neighboring cell on the primary carrier and a neighboring cell on the secondary carrier. Initially, a power delay profile is calculated for each of the serving cells and the neighboring cells. An association is determined between at least one cell on the primary carrier and at least one cell on the secondary carrier based on the calculated power delay profiles. The association is then later used in performing interference cancellation in the radio node.

主权项

1. A method for receiving multiple radio frequency (RF) carriers including a primary carrier and a secondary carrier in a radio node wherein each of the multiple RF carriers corresponds to a logical entity or object used in multi-carrier communications called a cell, where the cell is associated with a geographical location and transmission of a signal on a frequency, such that the receiving radio node receives signals on serving cells, including a first one of the serving cells on the primary carrier and a second one of the serving cells on the secondary carrier, and on neighboring cells, including a first one of the neighboring cells on the primary carrier and a second one of the neighboring cells on the secondary carrier, the method comprising:
initially calculating a power delay profile for each of the serving cells and the neighboring cells; determining an association between at least one of the neighboring cells on the primary carrier and at least one of the neighboring cells on the secondary carrier based on the calculated power delay profiles, wherein the determined association used in performing interference cancellation is that the at least one neighboring cell on the primary carrier originates from a same geographical site as the at least one neighboring cell on the secondary carrier; and using the association in performing interference cancellation at the radio node; and later calculating, after initially calculating the power delay profile for each of the serving cells and the neighboring cells, a power delay profile for the at least one cell on the primary carrier; wherein using the association in performing interference cancellation at the radio node comprises using the power delay profile calculated later for the at least one cell on the primary carrier as the power delay profile for the associated at least one cell on the secondary carrier.