Interference measurement methods for advanced receiver in LTE/LTE-A
First Claim
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1. A method for estimating interference on a first downlink control channel, comprising:
- receiving, by a user equipment (UE), the first downlink control channel transmitted from a first network node;
determining a first demodulation reference signal (DMRS) port associated with the first downlink control channel;
determining activity on a second DMRS port associated with one of a second downlink control channel and a physical downlink shared channel (PDSCH); and
estimating the interference on the first downlink control channel based on the second DMRS port,wherein the second DMRS port is orthogonal to the first DMRS port, andwherein orthogonality between the first DMRS port and the second DMRS port is maintained using an enhanced physical downlink control channel (EPDCCH) ID.
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Abstract
A method for receiving a PDCH is provided. The method comprises: receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.
38 Citations
14 Claims
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1. A method for estimating interference on a first downlink control channel, comprising:
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receiving, by a user equipment (UE), the first downlink control channel transmitted from a first network node; determining a first demodulation reference signal (DMRS) port associated with the first downlink control channel; determining activity on a second DMRS port associated with one of a second downlink control channel and a physical downlink shared channel (PDSCH); and estimating the interference on the first downlink control channel based on the second DMRS port, wherein the second DMRS port is orthogonal to the first DMRS port, and wherein orthogonality between the first DMRS port and the second DMRS port is maintained using an enhanced physical downlink control channel (EPDCCH) ID. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory, tangible computer readable storage medium encoded with computer executable instructions, wherein execution of the computer executable instructions is for:
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receiving, from a first network node, a physical downlink channel; determining a demodulation reference signal (DMRS) port having a relationship to the physical downlink channel; and estimating an amount of interference on the physical downlink channel based at least in part on the DMRS port, wherein the first DMRS port and the second DMRS port are orthogonal DMRS ports, and wherein orthogonality between the first DMRS port and the second DMRS port is maintained using an enhanced physical downlink control channel (EPDCCH) ID. - View Dependent Claims (11, 12, 13, 14)
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Specification