Physical uplink control channel (PUCCH) resource mapping using an enhanced physical downlink control channel (ePDCCH)

A node device of a node configured to map a physical uplink control channel (PUCCH) resource using corresponding to an enhanced physical downlink control channel (ePDCCH), comprising:

• a processing module configured to map a PUCCH resources nPUCCH(1) corresponding to an ePDCCH for PUCCH resource hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback, wherein the PUCCH resource nPUCCH(1) is determined using a lowest PRB index including at least one enhanced control channel element (eCCE) of ePDCCH resources;
• and
• a transceiver module configured to communicate with a wireless device and to send the map of the PUCCH resource nPUCCH(1) to the wireless device and receive hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback via a PUCCH based on the map,
• wherein the PUCCH resource nPUCCH(1) is represented by:
• nPUCCH(1)=E·(IPRB—ePDCCHlowest—index−NPRB,ePDCCHoffset)+neCCE+NePUCCH(1) for frequency-division duplexing (FDD), where E is a total number of eCCE in one physical resource block(PRB), IPRB—ePDCCHlowest—index is the lowest PRB index including at least one eCCE of ePDCCH resources, NPRB,ePDCCHoffset is a starting PRB index for an ePDCCH region, neccE is a first eCCE index number in a lowest PRB used for transmission of the corresponding ePDCCH in a downlink subframe where 0≦neCCE <E, and NePUCCH(1) is a starting PUCCH channel index for a ePUCCH region in an uplink subframe and is configured by high layers for each user equipment (UE), or
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• for time-division duplexing (TDD), where E is a total number of eCCE in one physical resource block (PRB), NPRB,ePDCCHoffset is a starting PRB index for an ePDCCH region, NePUCCH(1) is a starting PUCCH channel index for a ePUCCH region in an uplink subframe and is configured by high layers for each user equipment (UE), IPRB—ePDCCHlowest—index is the lowest PRB index including at least one eCCE of ePDCCH resources in a downlink subframe n−km, neccE is a first eCCE index number used for transmission of the corresponding ePDCCH in the downlink subframe n−km where n is an uplink subframe associated with the downlink subframe n−km, km is a smallest value in a downlink associate set K={k0,k1, . . . kM−1} with a ePDCCH in downlink subframe n−km where M is the number of elements in the set K and 0≦m≦M−1, and NPRB,ePDCCHi is a number of ePDCCH PRBs used for transmission of ePDCCH in downlink subframe n−ki.

At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement a method for generating hybrid automatic repeat request- acknowledgement (HARQ-ACK) feedback in physical uplink control channel (PUCCH) corresponding to an enhanced physical downlink control channel (ePDCCH) at a wireless device, comprising:

• receiving from a node at the wireless device a parameter for a map of a PUCCH resource nPUCCH(1) corresponding to an ePDCCH for PUCCH resource HARQ-ACK PUCCH feedback, wherein the PUCCH resource nPUCCH(1) is determined using a total number PUCCH of enhanced control channel element (eCCE) in one physical resource block (PRB);
• and
• transmitting from the wireless device to the node HARQ-ACK feedback of the ePDCCH via a PUCCH based on the map,
• wherein the PUCCH resource nPUCCH(1) is represented by:
• nPUCCH(1)=E·(IPRB—ePDCCHlowest—index−NPRB,ePDCCHoffset)+neCCE+NePUCCH(1) for frequency-division duplexing (FDD), where E is the total number of eCCE in one PRB, IPRB—ePDCCHlowest—index is the lowest PRB index including at least one eCCE of ePDCCH resources, NPRB,ePDCCHoffset is a starting PUCCH channel index for an ePDCCH region in an uplink subframe, neCCE is a first eCCE index number in a lowest PRB used for transmission of the corresponding ePDCCH in a downlink subframe where 0≦neCCE<E, and NePUCCH(1) is a starting PRB index for a ePUCCH region and is configured by high layers for each user equipment (UE);
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• for time-division duplexing (TDD), where E is the total number of eCCE in one PRB, NPRB,ePDCCHoffset is a starting PRB index for an ePDCCH region, NePUCCH(1) is a starting PUCCH channel index for a ePUCCH region in an uplink subframe and is configured by high layers for each user equipment (UE) IPRB—ePDCCHlowest—index is a lowest PRB index including at least one eCCE of ePDCCH resources in a downlink subframe n−km, neCCE is a first eCCE index number used for transmission of the corresponding ePDCCH in the downlink subframe n−km where n is an uplink subframe associated with the downlink subframe n−km , km is a smallest value in a downlink associate set K={k0,k1, . . . kM−1} with a ePDCCH in downlink subframe n−km where M is the number of elements in the set K and 0≦m≦M−1, and NPRB,ePDCCHi is a number of ePDCCH PRBs used for transmission of ePDCCH in downlink subframe n−ki.

A wireless device configured to generate hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback in physical uplink control channel (PUCCH) corresponding to an enhanced physical downlink control channel (ePDCCH), comprising:

• a transceiver module configured to:
• receive from a node a parameter for a map of a PUCCH resource nPUCCH(1) corresponding to an ePDCCH for PUCCH resource HARQ-ACK feedback, wherein the PUCCH resource nPUCCH(1) is determined using a starting PUCCH channel index for an ePDCCH region;
• and
• a processing module configured to map the PUCCH resource
• transmit to the node HARQ-ACK feedback of the ePDCCH via a PUCCH based on the map;
• and
• a processing module configured to map the PUCCH resource nPUCCH(1) based on the parameter,
• wherein the PUCCH resource nPUCCH(1) is represented by:
• nPUCCH(1)=E·(IPRB—ePDCCHlowest—index−NPRB,ePDCCHoffset)+neCCE+NePUCCH(1) for frequency-division duplexing (FDD), where E is a total number of enhanced control channel element (eCCE) in one physical resource block (PRB), IPRB—ePDCCHlowest—index is a lowest PRB index including at least one eCCE of ePDCCH resources, NPRB,ePDCCHoffset is starting PRB index for the ePDCCH region, neCCE is a first eCCE index number in a lowest PRB used for transmission of the corresponding ePDCCH in a downlink subframe where 0≦neCCE<E , and NePUCCH(1) is a starting PUCCH channel index for a ePUCCH region in an uplink subframe and is configured by high layers for each user equipment (UE);
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• for time-division duplexing (TDD), where E is a total number of enhanced control channel element (eCCE) in one physical resource block (PRB), NPRB,ePDCCHoffset is the starting PRB index for the ePDCCH region, NePUCCH(1) is a starting PUCCH channel index for a ePUCCH region in an uplink subframe and is configured by high layers for each user equipment (UE), IPRB—ePDCCHlowest—index is a lowest PRB index including at least one eCCE of ePDCCH resources in a downlink subframe n−km, neCCE is a first eCCE index number used for transmission of the corresponding ePDCCH in the downlink subframe n−km where n is an uplink subframe associated with the downlink subframe n−km , km is a smallest value in a downlink associate set K ={k0, k1, . . . kM−1} with a ePDCCH in downlink subframe n−km where M is the number of elements in the set K and 0≦m≦M−1, and NPRB,eppccHi is a number of ePDCCH PRBs used for transmission of ePDCCH in downlink subframe n−ki.