Methods, network node, wireless device, computer programs and computer program products for assisting downlink interference estimation
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsChrysostomos Koutsimanis, Erik Dahlman
Life of this patent
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Abstract
It is presented a method for assisting downlink interference estimation in a cellular network. The method is performed in a network node of the cellular network and comprises the steps of: estimating an average transmit power of the network node in a future time period; transmitting a power parameter based on the estimated average transmit power to at least one wireless device being served by the network node; and transmitting a reference signal for downlink interference estimation. A corresponding network node, wireless device, computer programs and computer program products are also presented.
Claims22
A method for assisting downlink interference estimation in a cellular network, the method being performed in a network node of the cellular network and comprising the steps of:
- estimating an average transmit power of the network node in a future time period;
- transmitting a power parameter based on the estimated average transmit power to at least one wireless device being served by the network node;
- and
- transmitting, based on the power parameter, a reference signal for downlink interference estimation.
A network node arranged to assist downlink interference estimation in a cellular network, the network node comprising:
- a processor;
- and
- a memory storing instructions that, when executed by the processor, cause the network node to:
- estimate an average transmit power of the network node in a future time period;
- transmit a power parameter based on the estimated average transmit power to at least one wireless device being served by the network node;
- and
- transmit, based on the power parameter, a reference signal for the downlink interference estimation.
A method for estimating downlink interference in a cellular network, performed in a wireless device served by a serving network node of the cellular network and comprising the steps of:
- receiving a power parameter from the serving network node, the power parameter being based on an average transmit power of the serving network node in a future time period;
- receiving a set of reference signals for downlink interference estimation, the set of reference signals being a combination of reference signals from the serving network node and from a set of interfering network nodes;
- estimating a contribution of the serving network node in the set of reference signals by considering the power parameter;
- and
- estimating interference from the set of interfering network nodes by removing the estimated contribution of the serving network node from the set of reference signals.
A wireless device arranged to estimate downlink interference in a cellular network, the wireless device comprising:
- a processor;
- and
- a memory storing instructions that, when executed by the processor, cause the network node to:
- receive a power parameter from the serving network node, the power parameter being based on an average transmit power of the serving network node in a future time period;
- receive a set of reference signals for downlink interference estimation, the set of reference signals being a combination of reference signals from the serving network node and from a set of interfering network nodes;
- estimate a contribution of the serving network node in the set of reference signals by considering the power parameter;
- and
- estimate interference from the set of interfering network nodes by removing the estimated contribution of the serving network node from the set of reference signals.
Dependencies are inferred from the claim text.