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US 2012/0236741 A1Published application
Power control and user multiplexing for heterogeneous network coordinated multipoint operations
AssigneeQUALCOMM Incorporated
InventorsHao Xu, Xiliang Luo, Xiaoxia Zhang, Peter Gaal, Tingfang Ji, Juan Montojo
Life of this patent
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Abstract
Certain aspects of the present disclosure relate to techniques for power control and user multiplexing for coordinated multi-point (CoMP) transmission and reception in heterogeneous networks (HetNet).
Claims80
A method for wireless communications by a user equipment (UE), comprising:
- measuring channel state information reference signals (CSI-RS) transmitted from at least one of a set of transmission points involved in coordinated multipoint (CoMP) operations with the UE;
- and
- open loop power control based on the measured CSI-RS from at least one of the transmission points.
An apparatus for wireless communications, comprising:
- means for measuring channel state information reference signals (CSI-RS) transmitted from at least one of a set of transmission points involved in coordinated multipoint (CoMP) operations with the UE;
- and
- means for performing open loop power control based on the measured CSI-RS from at least one of the transmission points.
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- measure channel state information reference signals (CSI-RS) transmitted from at least one of a set of transmission points involved in coordinated multipoint (CoMP) operations with a UE;
- and
- perform open loop power control based on the measured CSI-RS from at least one of the transmission points;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communications, comprising:
- a computer-readable medium having code for:
- measuring channel state information reference signals (CSI-RS) transmitted from at least one of a set of transmission points involved in coordinated multipoint (CoMP) operations with a UE;
- and
- performing open loop power control based on the measured CSI-RS from at least one of the transmission points.
1 more element
A method for wireless communications by a base station, comprising:
- determining one or more parameters for use by a user equipment (UE) in open loop (OL) power control, wherein the one or more parameters are determined to take into account coordinated multipoint (CoMP) operations;
- and
- signaling the one or more parameters to the UE.
An apparatus for wireless communications, comprising:
- means for determining one or more parameters for use by a user equipment (UE) in open loop (OL) power control, wherein the one or more parameters are determined to take into account coordinated multipoint (CoMP) operations;
- and
- means for signaling the one or more parameters to the UE.
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- determine one or more parameters for use by a user equipment (UE) in open loop (OL) power control, wherein the one or more parameters are determined to take into account coordinated multipoint (CoMP) operations;
- and
- signal the one or more parameters to the UE;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communications, comprising:
- a computer-readable medium comprising code for:
- determining one or more parameters for use by a user equipment (UE) in open loop (OL) power control, wherein the one or more parameters are determined to take into account coordinated multipoint (CoMP) operations;
- and
- signaling the one or more parameters to the UE.
1 more element
A method for wireless communications by a base station, comprising:
- receiving a transmission from a UE;
- and
- determining one or more cells to include in a coordinated multipoint (CoMP) group, based on the received transmission
An apparatus for wireless communications, comprising:
- means for receiving a transmission from a UE;
- and
- means for determining one or more cells to include in a coordinated multipoint (CoMP) group, based on the received transmission.
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- receive a transmission from a UE;
- and
- determine one or more cells to include in a coordinated multipoint (CoMP) group, based on the received transmission;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communications, comprising:
- a computer-readable medium comprising code for:
- receiving a transmission from a UE;
- and
- determining one or more cells to include in a coordinated multipoint (CoMP) group, based on the received transmission.
1 more element
A method for wireless communications by a user equipment, comprising:
- receiving distinct channel state information reference signals (CSI-RS) transmitted from a plurality of cells;
- and
- transmitting feedback, based on the received CSI-RS, that may be used to determine one or more cells to include in an uplink (UL) coordinated multipoint (CoMP) group.
An apparatus for wireless communications, comprising:
- means for receiving distinct channel state information reference signals (CSI-RS) transmitted from a plurality of cells;
- and
- means for transmitting feedback, based on the received CSI-RS, that may be used to determine one or more cells to include in an uplink (UL) coordinated multipoint (CoMP) group.
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- receive distinct channel state information reference signals (CSI-RS) transmitted from a plurality of cells;
- and
- transmit feedback, based on the received CSI-RS, that may be used to determine one or more cells to include in an uplink (UL) coordinated multipoint (CoMP) group;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communications by a user equipment, comprising:
- a computer-readable medium comprising code for:
- receiving distinct channel state information reference signals (CSI-RS) transmitted from a plurality of cells;
- and
- transmitting feedback, based on the received CSI-RS, that may be used to determine one or more cells to include in an uplink (UL) coordinated multipoint (CoMP) group.
1 more element
A method for wireless communication by a base station (BS), comprising:
- determining a channel state information reference signal (CSI-RS), the CSI-RS being different from CSI-RS transmitted by one or more other transmission points sharing a common physical cell identifier (PCI) with the base station, the CSI-RS being decoupled from the PCI;
- and
- transmitting the CSI-RS from the base station.
An apparatus for wireless communication, comprising:
- means for determining a channel state information reference signal (CSI-RS), the CSI-RS being different from CSI-RS transmitted by one or more other transmission points sharing a common physical cell identifier (PCI) with the base station, the CSI-RS being decoupled from the PCI;
- and
- means for transmitting the CSI-RS from the base station.
An apparatus for wireless communication, comprising:
- at least one processor configured to:
- determine a channel state information reference signal (CSI-RS), the CSI-RS being different from CSI-RS transmitted by one or more other transmission points sharing a common physical cell identifier (PCI) with the base station, the CSI-RS being decoupled from the PCI;
- and
- transmit the CSI-RS from the base station;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communication, comprising:
- a computer-readable medium comprising code for:
- determining a channel state information reference signal (CSI-RS), the CSI-RS being different from CSI-RS transmitted by one or more other transmission points sharing a common physical cell identifier (PCI) with the base station, the CSI-RS being decoupled from the PCI;
- and
- transmitting the CSI-RS from the base station.
1 more element
A method for wireless communication by a user equipment (UE), comprising:
- transmitting a sounding reference signal (SRS) from the UE in proximity to a plurality of transmission points sharing a common physical cell identifier (PCI);
- receiving, from at least one of the transmission points, information regarding configuration for uplink coordinated multipoint (UL CoMP) operation, the configuration being decoupled from the PCI.
An apparatus for wireless communication, comprising:
- means for transmitting a sounding reference signal (SRS) from a UE in proximity to a plurality of transmission points sharing a common physical cell identifier (PCI);
- means for receiving, from at least one of the transmission points, information regarding configuration for uplink coordinated multipoint (UL CoMP) operation, the configuration being decoupled from the PCI.
An apparatus for wireless communication, comprising:
- at least one processor configured to:
- transmit a sounding reference signal (SRS) from the UE in proximity to a plurality of transmission points sharing a common physical cell identifier (PCI);
- receive, from at least one of the transmission points, information regarding
- configuration for uplink coordinated multipoint (UL CoMP) operation, the configuration being decoupled from the PCI;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communication, comprising:
- computer-readable medium comprising code for:
- transmitting a sounding reference signal (SRS) from the UE in proximity to a plurality of transmission points sharing a common physical cell identifier (PCI);
- receiving, from at least one of the transmission points, information regarding configuration for uplink coordinated multipoint (UL CoMP) operation, the configuration being decoupled from the PCI.
A method for wireless communications by a transmission point involved in coordinated multipoint (CoMP) operations, comprising:
- signaling one or more UEs regarding a channel quality indication (CQI) configuration for CQI transmission, wherein the signaled CQI configuration is decoupled from physical cell identifier (PCI) of the transmission point.
An apparatus for wireless communications involved in coordinated multipoint (CoMP) operations, comprising:
- means for signaling one or more UEs regarding a channel quality indication (CQI) configuration for CQI transmission, wherein the signaled CQI configuration is decoupled from physical cell identifier (PCI) of the transmission point.
An apparatus for wireless communications involved in coordinated multipoint (CoMP) operations, comprising:
- at least one processor configured to:
- signal one or more UEs regarding a channel quality indication (CQI) configuration for CQI transmission, wherein the signaled CQI configuration is decoupled from physical cell identifier (PCI) of the transmission point;
- and
- a memory coupled to the at least one processor.
1 more element
A computer-program product for wireless communications by a transmission point involved in coordinated multipoint (CoMP) operations, comprising:
- a computer-readable medium comprising code for:
- signaling one or more UEs regarding a channel quality indication (CQI) configuration for CQI transmission, wherein the signaled CQI configuration is decoupled from physical cell identifier (PCI) of the transmission point.
A method for wireless communications by a user equipment (UE), comprising:
- receiving a physical uplink control channel (PUCCH) configuration from a first transmission point participating in coordinated multipoint (CoMP) operations with one or more other transmission points;
- transmitting a PUCCH to a first set of one or more transmission points in accordance with the PUCCH configuration;
- and
- transmitting a physical uplink shared channel (PUSCH) to a second set of one or more transmission points different than the first set of transmission points.
1 more element
An apparatus for wireless communications, comprising:
- means for receiving a physical uplink control channel (PUCCH) configuration from a first transmission point participating in coordinated multipoint (CoMP) operations with one or more other transmission points;
- means for transmitting a PUCCH to a first set of one or more transmission points in accordance with the PUCCH configuration;
- and
- means for transmitting a physical uplink shared channel (PUSCH) to a second set of one or more transmission points different than the first set of transmission points.
1 more element
An apparatus for wireless communications by a user equipment (UE), comprising:
- at least one processor configured to:
- receive a physical uplink control channel (PUCCH) configuration from a first transmission point participating in coordinated multipoint (CoMP) operations with one or more other transmission points;
- transmit a PUCCH to a first set of one or more transmission points in accordance with the PUCCH configuration;
- and
- transmit a physical uplink shared channel (PUSCH) to a second set of one or more transmission points different than the first set of transmission points;
- and
- a memory coupled to the at least one processor.
4 more elements
A computer-program product for wireless communications by a user equipment (UE), comprising:
- a computer-readable medium comprising code for:
- receiving a physical uplink control channel (PUCCH) configuration from a first transmission point participating in coordinated multipoint (CoMP) operations with one or more other transmission points;
- transmitting a PUCCH to a first set of one or more transmission points in accordance with the PUCCH configuration;
- and
- transmitting a physical uplink shared channel (PUSCH) to a second set of one or more transmission points different than the first set of transmission points.
2 more elements
A method for wireless communications by a user equipment (UE), comprising:
- generating channel quality indication (CQI) information for downlink transmission from a first set of one or more transmission points involved in coordinated multipoint (CoMP) operations with the UE;
- and
- sending the CQI information to a second set of transmission points involved in CoMP operations with the UE.
An apparatus for wireless communications, comprising:
- means for generating channel quality indication (CQI) information for downlink transmission from a first set of one or more transmission points involved in coordinated multipoint (CoMP) operations with the UE;
- and
- means for sending the CQI information to a second set of transmission points involved in CoMP operations with the UE.
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- generate channel quality indication (CQI) information for downlink transmission from a first set of one or more transmission points involved in coordinated multipoint (CoMP) operations with the UE;
- and
- send the CQI information to a second set of transmission points involved in CoMP operations with the UE;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communications, comprising:
- a computer-readable medium comprising code for:
- generating channel quality indication (CQI) information for downlink transmission from a first set of one or more transmission points involved in coordinated multipoint (CoMP) operations with the UE;
- and
- sending the CQI information to a second set of transmission points involved in CoMP operations with the UE.
1 more element
Dependencies are inferred from the claim text.