Hybrid automatic repeat request acknowledge resource allocation for enhanced physical downlink control channel
First Claim
1. A user equipment, comprising:
- a transceiver;
a data processor connected to said transceiver; and
a memory connected to said digital data processor storing data and at least one application program controlling operation of said data processor, said at least one application program operable to control said data processor toreceive a control message on an enhanced physical downlink control channel (EPDCCH);
receive a second message indicated by the control message;
receive a demodulation reference signal on the same antenna port as the associated EPDCCH physical resource;
transmit an ACK/NAK signal on an ACK/NAK resource determined from the EPDCCH indicating whether the second message was correctly received by the user equipment;
transmit the ACK/NACK using physical uplink control channel format 1a or 1b wherein the PUCCH resource is determined for at least one EPDCCH physical resource block set according to;
nPUCCH(1)=nindex+NPUCCH(1)+g(NPUCCH,e(1))where nindex is the respective lowest indexed physical resource block or lowest indexed control channel element;
NPUCCH(1) is the cell-specific offset;
NPUCCH,e(1) is determined from a resource offset field corresponding to the EPDCCH, and g(NPUCCH,e(1)) is a function of NPUCCH,e(1).
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Abstract
A method and apparatus of wireless communication between a base station and at least one user equipment. The method includes: transmitting an enhanced physical downlink control channel from the base station to the at least one user equipment using a demodulation reference signal antenna port; transmitting message from the base station to the at least one user equipment which is scheduled by the enhanced physical downlink control channel; receiving the message at the at least one user equipment; determining at the at least one user equipment whether the message was correctly received; and transmitting an ACK/NAK signal on an ACK/NAK resource determined from the enhanced physical downlink control channel from the at least one user equipment to the base station indicating whether the message was correctly received by the at least one user.
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Citations
20 Claims
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1. A user equipment, comprising:
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a transceiver; a data processor connected to said transceiver; and a memory connected to said digital data processor storing data and at least one application program controlling operation of said data processor, said at least one application program operable to control said data processor to receive a control message on an enhanced physical downlink control channel (EPDCCH); receive a second message indicated by the control message; receive a demodulation reference signal on the same antenna port as the associated EPDCCH physical resource; transmit an ACK/NAK signal on an ACK/NAK resource determined from the EPDCCH indicating whether the second message was correctly received by the user equipment; transmit the ACK/NACK using physical uplink control channel format 1a or 1b wherein the PUCCH resource is determined for at least one EPDCCH physical resource block set according to;
nPUCCH(1)=nindex+NPUCCH(1)+g(NPUCCH,e(1))where nindex is the respective lowest indexed physical resource block or lowest indexed control channel element;
NPUCCH(1) is the cell-specific offset;
NPUCCH,e(1) is determined from a resource offset field corresponding to the EPDCCH, and g(NPUCCH,e(1)) is a function of NPUCCH,e(1). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating a user equipment, comprising:
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receiving a control message on an enhanced physical downlink control channel (EPDCCH); receiving a second message indicated by the control message; receiving a demodulation reference signal associated with the EPDCCH; transmitting an ACK/NAK signal on an ACK/NAK resource determined from the EPDCCH indicating whether the second message was correctly received by the user equipment; transmitting the ACK/NACK using physical uplink control channel format 1a or 1b wherein the PUCCH resource is determined for at least one EPDCCH physical resource block set according to;
nPUCCH(1)=nindex+NPUCCH(1)+g(NPUCCH,e(1))where nindex is the respective lowest indexed physical resource block or lowest indexed control channel element;
NPUCCH(1) is the cell-specific offset;
NPUCCH,e(1) is determined from a resource offset field corresponding to the EPDCCH, and g(NPUCCH,e(1)) is a function of NPUCCH,e(1). - View Dependent Claims (10, 11, 12, 13, 14)
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15. A user equipment, comprising:
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circuitry for receiving a control message on an enhanced physical downlink control channel (EPDCCH); circuitry for receiving a second message indicated by the control message; circuitry for receiving a demodulation reference signal on a same antenna port as the associated EPDCCH physical resource; circuitry for transmitting an ACK/NAK signal on an ACK/NAK resource determined from the EPDCCH indicating whether the second message was correctly received by the user equipment; and circuitry for transmitting the ACK/NACK using physical uplink control channel format 1a or 1b wherein the PUCCH resource is determined for at least one EPDCCH physical resource block set according to;
nPUCCH(1)=nindex+NPUCCH(1)+g(NPUCCH,e(1))where nindex is the respective lowest indexed physical resource block or lowest indexed control channel element;
NPUCCH(1) is the cell-specific offset;
NPUCCH,e(1) is determined from a resource offset field corresponding to the EPDCCH, and g(NPUCCH,e(1)) is a function of NPUCCH,e(1). - View Dependent Claims (16, 17, 18, 19, 20)
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Specification