Employing neighboring cell assistance information for interference mitigation
First Claim
1. A method for wireless communication by a base station (BS), comprising:
- determining assistance information for one or more cells that cause or potentially cause interference with at least a user equipment (UE) served in a serving cell, wherein the assistance information comprises;
a transmission power ratio,scheduling information for one or more downlink channels transmitted in the one or more cells, andat least one of a synchronization indicator, a subframe alignment indicator, a radio frame boundary indicator, paging information associated with the one or more cells, an identifier associated with one or more subframes for interference suppression, or a starting physical downlink data channel symbol position; and
signaling the assistance information to the UE,wherein the scheduling information is included in at least one of a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH); and
wherein a format of the at least one of the PDCCH or ePDCCH indicates the at least one of the PDCCH or ePDCCH includes the scheduling information, wherein the format is different from another format of another PDCCH or another ePDCCH that conveys a grant of transmission resources for an uplink transmission or a downlink transmission.
1 Assignment
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Accused Products
Abstract
Certain aspects of the present disclosure relate to methods and apparatus for employing a neighboring cell'"'"'s assistance information for interference mitigation (e.g., by conveying the information to a user equipment). A base station (BS) may determine assistance information for a neighboring cell and convey it to a user equipment (UE). A UE may receive assistance information for a neighboring cell and use that information for performing interference cancellation or suppression on received signals. The UE may receive the assistance information from a serving cell or a non-serving cell. The assistance information may be valid for a particular transmission instance, for a known period of time, or until updated by a BS.
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Citations
24 Claims
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1. A method for wireless communication by a base station (BS), comprising:
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determining assistance information for one or more cells that cause or potentially cause interference with at least a user equipment (UE) served in a serving cell, wherein the assistance information comprises; a transmission power ratio, scheduling information for one or more downlink channels transmitted in the one or more cells, and at least one of a synchronization indicator, a subframe alignment indicator, a radio frame boundary indicator, paging information associated with the one or more cells, an identifier associated with one or more subframes for interference suppression, or a starting physical downlink data channel symbol position; and signaling the assistance information to the UE, wherein the scheduling information is included in at least one of a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH); and wherein a format of the at least one of the PDCCH or ePDCCH indicates the at least one of the PDCCH or ePDCCH includes the scheduling information, wherein the format is different from another format of another PDCCH or another ePDCCH that conveys a grant of transmission resources for an uplink transmission or a downlink transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A base station (BS) for wireless communication, comprising:
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a processor configured to; determine assistance information for one or more cells that cause or potentially cause interference with at least a user equipment (UE) served in a serving cell, wherein the assistance information comprises; a transmission power ratio, scheduling information for one or more downlink channels transmitted in the one or more cells, and at least one of a synchronization indicator, a subframe alignment indicator, a radio frame boundary indicator, paging information associated with the one or more cells, an identifier associated with one or more subframes for interference suppression, or a starting physical downlink data channel symbol position, and signal the assistance information to the UE, wherein the scheduling information is included in at least one of a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH); and wherein a format of the at least one of the PDCCH or ePDCCH indicates the at least one of the PDCCH or ePDCCH includes the scheduling information, wherein the format is different from another format of another PDCCH or another ePDCCH that conveys a grant of transmission resources for an uplink transmission or a downlink transmission; and a memory coupled to the processor. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer-readable medium for wireless communication by a base station (BS), the non-transitory computer-readable medium comprising code for:
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determining assistance information for one or more cells that cause or potentially cause interference with at least a user equipment (UE) served in a serving cell, wherein the assistance information comprises; a transmission power ratio, scheduling information for one or more downlink channels transmitted in the one or more cells, and at least one of a synchronization indicator, a subframe alignment indicator, a radio frame boundary indicator, paging information associated with the one or more cells, an identifier associated with one or more subframes for interference suppression, or a starting physical downlink data channel symbol position; and signaling the assistance information to the UE, wherein the scheduling information is included in at least one of a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH); and wherein an identifier used to encode the at least one of the PDCCH or ePDCCH indicates the at least one of the PDCCH or ePDCCH includes the scheduling information. - View Dependent Claims (16, 17, 18)
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19. A method for wireless communications by a user equipment (UE), comprising:
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receiving, at the UE, signaling of assistance information for one or more cells that cause or potentially cause interference with at least the UE served in a serving cell, wherein the assistance information comprises; a transmission power ratio, scheduling information for one or more downlink channels transmitted in the one or more cells, and at least one of a synchronization indicator, a subframe alignment indicator, a radio frame boundary indicator, paging information associated with the one or more cells, an identifier associated with one or more subframes for interference suppression, or a starting physical downlink data channel symbol position; and using the assistance information to mitigate interference by transmissions from at least one of the serving cell or one or more cells that cause interference, wherein the scheduling information is included in at least one of a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH); and wherein a format of the at least one of the PDCCH or ePDCCH indicates the at least one of the PDCCH or ePDCCH includes the scheduling information, wherein the format is different from another format of another PDCCH or another ePDCCH that conveys a grant of transmission resources for an uplink transmission or a downlink transmission. - View Dependent Claims (20, 21)
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22. A user equipment (UE) for wireless communications, comprising:
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a processor configured to; receive signaling of assistance information for one or more cells that cause or potentially cause interference with at least the UE served in a serving cell, wherein the assistance information comprises; a transmission power ratio, scheduling information for one or more downlink channels transmitted in the one or more cells, and at least one of a synchronization indicator, a subframe alignment indicator, a radio frame boundary indicator, paging information associated with the one or more cells, an identifier associated with one or more subframes for interference suppression, or a starting physical downlink data channel symbol position; and use the assistance information to mitigate interference by transmissions from at least one of the serving cell or one or more cells that cause interference, wherein the scheduling information is included in at least one of a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH); and an identifier used to encode the at least one of the PDCCH or ePDCCH indicates the at least one of the PDCCH or ePDCCH includes the scheduling information; and a memory coupled to the processor. - View Dependent Claims (23, 24)
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Specification