Method for estimating interference within a serving cell, user equipment, computer program and computer program products

摘要

The invention relates to a method 20 performed in a user equipment 8 for estimating interference within a serving cell 5 of a communication system 1. The user equipment 8 is connected to the serving cell 5 and the communication system 1 further comprising one or more neighboring cells 6, 7 to the serving cell 5. The method 20 comprises: receiving 21 neighboring cell reference signals transmitted in at least one of the neighboring cells 6, 7 and serving cell reference signals transmitted in the serving cell 5; and determining 22 a first interference estimate 1SC,iC of interference within the serving cell 5, the first interference estimate taking into account cancellation of interference from the neighboring cell reference signals. The invention also relates to a user equipment, computer program, and computer program product.

主权项

1. A method performed in a user equipment operating in a serving cell of a communication system, the method comprising:
generating an initial estimate of interference with respect to serving cell reference signals received by the user equipment from the serving cell, said initial estimate of interference including the effects of one or more neighbor cell reference signals that interfere with reception of the serving cell reference signals at the user equipment; estimating an interference contribution of each neighbor cell reference signal to the initial estimate of interference, based on an estimating a channel corresponding to the neighbor cell reference signal; canceling the estimated interference contributions of the one or more neighbor cell reference signals from the initial estimate of interference, to thereby obtain a second estimate of interference that accounts for the cancellation of the estimated interference contributions; evaluating a consistency of the second estimate of interference; and using the second estimate of interference for at least one of demodulating serving cell data signals and estimating serving cell signal quality, responsive to determining that the second estimate of interference is consistent, and using the initial estimate of interference instead of the second estimate of interference, responsive to determining that the second estimate of interference is not consistent.