Signaling to enable serving cell interference suppression
OwnerTaesang Yoo, Tao Luo +1inventors
InventorsTaesang Yoo, Tao Luo, Yongbin Wei
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Abstract
Suppression of serving cell transmissions directed to second-served UEs may improve channel estimation of a serving cell or a neighbor cell. This may include using scheduling information for second-served UEs to suppress serving cell signals intended for second-served UEs having overlapping MIMO transmissions. Alternatively, this scheduling information may aid in suppressing a serving cell signal for a second-served UE to improve channel estimation of a neighbor cell. Various embodiments described herein, include implementations and techniques to aid channel estimation, and signal scheduling information to a first-served UE to aid in suppression of serving cell signals for second-served UEs.
Claims22
A method of wireless communication of a first-served user equipment (UE) served by a serving cell, comprising:
- detecting a downlink control information (DCI) format in a physical downlink control channel (PDCCH) or an evolved PDCCH (ePDCCH) conveyed to the UE from the serving cell, the DCI format indicating that the PDCCH or the EPDCCH comprises scheduling information for at least one second-served UE served by the serving cell;
- decoding the PDCCH or the ePDCCH and obtaining the scheduling information for the at least one second-served UE when the DCI format is detected;
- receiving a signal, the received signal comprising a first signal intended for the first served UE and a second signal intended for the at least one second-served UE;
- and
- canceling interference by the second signal from the serving cell for the at least one second served UE prior to or during a channel estimation procedure, the interference cancelation being based on the obtained scheduling information for the at least one second-served UE.
A first-served user equipment (UE) served by a serving cell, comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured to:
- detect a downlink control information (DCI) format in a physical downlink control channel (PDCCH) or an evolved PDCCH (ePDCCH) conveyed to the UE from the serving cell, the DCI format indicating that the PDCCH or the EPDCCH comprises scheduling information for at least one second-served UE served by the serving cell;
- decode the PDCCH or the ePDCCH and obtain the scheduling information for the at least one second-served UE when the DCI format is detected;
- receive a signal, the received signal comprising a first signal intended for the apparatus and a second signal intended for the at least one second-served UE;
- and
- cancel interference by the second signal from the serving cell for the at least one second served UE prior to or during a channel estimation procedure, the interference cancellation being based on the obtained scheduling information for the at least one second-served UE.
A first-served user equipment (UE) served by a serving cell, comprising:
- means for detecting a downlink control information (DCI) format in a physical downlink control channel (PDCCH) or an evolved PDCCH (ePDCCH) conveyed to the UE from the serving cell, the DCI format indicating that the PDCCH or the EPDCCH comprises scheduling information for at least one second-served UE served by the serving cell;
- means for decoding the PDCCH or the ePDCCH and obtaining the scheduling information for the at least one second-served UE when the DCI format is detected;
- means for receiving a signal, the received signal comprising a first signal intended for the apparatus and a second signal intended for the at least one second-served UE;
- and
- means for canceling interference by the second signal from the serving cell for the at least one second served UE prior to or during a channel estimation procedure, the interference cancelation being based on the obtained scheduling information for the at least one second-served UE.
A non-transitory computer-readable medium of a first-served user equipment (UE) served by a serving cell, the non-transitory computer-readable medium comprising code that when executed on at least one processor causes the at least one processor to:
- detect a downlink control information (DCI) format in a physical downlink control channel (PDCCH) or an evolved PDCCH (ePDCCH) conveyed to the UE from the serving cell, the DCI format indicating that the PDCCH or the EPDCCH comprises scheduling information for at least one second-served UE served by the serving cell;
- decode the PDCCH or the ePDCCH and obtain the scheduling information for the at least one second-served UE when the DCI format is detected;
- receive a signal, the received signal comprising a first signal intended for the first-served UE and a second signal intended for the at least one second-served UE;
- and
- cancel interference by the second signal from the serving cell for the at least one second served UE prior to or during a channel estimation procedure, the interference cancellation being based on the obtained scheduling information for the at least one second-served UE.
Dependencies are inferred from the claim text.