Efficient control channel decoding in CoMP communications
AssigneeQUALCOMM Incorporated
InventorsTao Luo, Durga Prasad Malladi, Xiaoxia Zhang, Yongbin Wei, Juan Montojo, Ke Liu
Life of this patent
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Abstract
Certain embodiments of the present disclosure propose two efficient designs for a control channel in a Coordinated Multi-Point (CoMP) system. The proposed designs enable a user equipment (UE) to transmit acknowledgement (ACK) and negative acknowledgement (NACK) signals to one or more access points (APs) upon receiving transmissions from them.
Claims48
A method for wireless communications by a non-serving access point (AP) of a coordinated multi-point (CoMP) set, comprising:
- receiving, from a serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a first user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set;
- sending a downlink transmission to the first UE as part of the joint CoMP transmission;
- and
- taking one or more actions, based on the information received from the serving AP, to reduce interference with the acknowledgement of the joint CoMP transmission from the first UE, wherein the one or more actions include sending downlink transmissions to one or more UEs with hybrid automatic repeat request (HARQ) disabled, and wherein the joint CoMP transmission includes downlink transmissions to the one or more UEs from the serving AP with HARQ enabled.
A method for wireless communications by a serving access point (AP) of a coordinated multi-point (CoMP) set, comprising:
- transmitting, to a non-serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set;
- transmitting, to the non-serving AP of the CoMP set, instructions to disable Hybrid Automatic Repeat Request (HARQ) operation for downlink transmissions to the UE from the non-serving AP;
- and
- transmitting a downlink transmission to the UE as part of the joint CoMP transmission with HARQ operation enabled.
An apparatus for wireless communications by a non-serving access point (AP) of a coordinated multi-point (CoMP) set, comprising:
- at least one processor configured to
- receive, from a serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a first user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set,
- send a downlink transmission to the first UE as part of the joint CoMP transmission, and
- take one or more actions, based on the information received from the serving AP, to reduce interference with the acknowledgement of the joint CoMP transmission from the first UE, wherein the one or more actions include sending downlink transmissions to one or more UEs with hybrid automatic repeat request (HARQ) disabled, and wherein the joint CoMP transmission includes downlink transmissions to the one or more UEs from the serving AP with HARQ enabled;
- and
- a memory coupled to the at least one processor.
An apparatus for wireless communications by a serving access point (AP) of a coordinated multi-point (CoMP) set, comprising:
- at least one processor configured to
- transmit, to a non-serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set,
- transmit, to the non-serving AP of the CoMP set, instructions to disable Hybrid Automatic Repeat Request (HARQ) operation for downlink transmissions to the UE from the non-serving AP, and
- transmit a downlink transmission to the UE as part of the joint CoMP transmission with HARQ operation enabled;
- and
- a memory coupled to the at least one processor.
An apparatus for wireless communications by a non-serving access point (AP) of a coordinated multi-point (CoMP) set, comprising:
- means for receiving, from a serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a first user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set;
- means for sending a downlink transmission to the first UE as part of the joint CoMP transmission;
- and
- means for taking one or more actions, based on the information received from the serving AP, to reduce interference with the acknowledgement of the joint CoMP transmission from the first UE, wherein the means for taking one or more actions includes means for sending downlink transmissions to one or more UEs with hybrid automatic repeat request (HARQ) disabled, and wherein the joint CoMP transmission includes downlink transmissions to the one or more UEs from the serving AP with HARQ enabled.
An apparatus for wireless communications by a serving access point (AP) of a coordinated multi-point (CoMP) set, comprising:
- means for transmitting, to a non-serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set;
- means for transmitting, to the non-serving AP of the CoMP set, instructions to disable Hybrid Automatic Repeat Request (HARQ) operation for downlink transmissions to the UE from the non-serving AP;
- and
- means for transmitting a downlink transmission to the UE as part of the joint CoMP transmission with HARQ operation enabled.
A computer-program product for wireless communications by a non-serving access point (AP) of a coordinated multi-point (CoMP) set, comprising a non-transitory computer readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising:
- instructions for receiving, from a serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a first user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set;
- instructions for sending a downlink transmission to the first UE as part of the joint CoMP transmission;
- and
- instructions for taking one or more actions, based on the information received from the serving AP, to reduce interference with the acknowledgement of the joint CoMP transmission from the first UE, wherein the instructions for taking one or more actions includes instructions for sending downlink transmissions to one or more UEs with hybrid automatic repeat request (HARQ) disabled, and wherein the joint CoMP transmission includes downlink transmissions to the one or more UEs from the serving AP with HARQ enabled.
A computer-program product for wireless communications by a serving access point (AP) of a coordinated multi-point (CoMP) set, comprising a non-transitory computer readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising:
- instructions for transmitting, to a non-serving access point (AP) of the CoMP set, information regarding uplink resources allocated to a user equipment (UE) for acknowledgement of a joint CoMP transmission sent from a plurality of APs in the CoMP set;
- instructions for transmitting, to the non-serving AP of the CoMP set, instructions to disable Hybrid Automatic Repeat Request (HARQ) operation for downlink transmissions to the UE from the non-serving AP, and
- instructions for transmitting a downlink transmission to the UE as part of the joint CoMP transmission with HARQ operation enabled.
Dependencies are inferred from the claim text.