User equipments, base stations, and methods
A user equipment (UE) is described. The UE may include a physical downlink control channel (PDCCH) receiver that is configured to detect multiple PDCCHs in a subframe i−K, the multiple PDCCHs including a first PDCCH. The UE may also include a physical uplink shared channel (PUSCH) transmitter that is configured to transmit multiple PUSCHs, the multiple PUSCHs being transmitted in a license-assisted access (LAA) cell, the multiple PUSCHs including a PUSCH which is scheduled by the first PDCCH, the PUSCH being transmitted in a subframe i. A transmit power of the PUSCH may be derived using a value indicated by a transmit power control (TPC) command field which is included in the first PDCCH.
1. A user equipment (UE) comprising:
physical downlink control channel (PDCCH) reception circuitry configured to detect multiple PDCCHs in a subframe i-K, the multiple PDCCHs being for uplink scheduling; and
physical uplink shared channel (PUSCH) transmission circuitry configured to transmit a PUSCH; and
control circuitry configured to determine a transmission power of the PUSCH; wherein
if the multiple PDCCHs for one UE are received in the subframe i-K and the PUSCH transmission circuitry transmits the PUSCH in a subframe i scheduled by a first PDCCH of the multiple PDCCHs in a license-assisted access (LAA) cell, the control circuitry determines the transmission power of the PUSCH based on a value indicated by a transmit power control (TPC) command field which is included in the first PDCCH.
2. The UE of claim 1 wherein
in a case that a TPC command accumulation is not enabled, K is equal to k+l+i′,
k is a value determined by a scheduling delay field in the first PDCCH,
l is 4, and
i′ is a value determined from at least a HARQ process ID in the subframe i.
3. An evolved node B (eNB) comprising:
physical downlink control channel (PDCCH) transmission circuitry configured to transmit multiple PDCCHs in a subframe i-K, the multiple PDCCHs being for uplink scheduling; and
physical uplink shared channel (PUSCH) reception circuitry configured to receive a PUSCH; and
if the multiple PDCCHs for one UE are transmitted in the subframe i-K and the PUSCH reception circuitry receives the PUSCH in a subframe i scheduled by a first PDCCH of the multiple PDCCHs in a license-assisted access (LAA) cell, the transmission power of the PUSCH is determined based on a value indicated by a transmit power control (TPC) command field which is included in the first PDCCH.
4. The eNB of claim 3 wherein
in a case that a TPC command accumulation is not enabled, K is equal to k+l+i′,
k is a value determined by a scheduling delay field in the first PDCCH,
l is 4, and
i′ is a value determined from at least a HARQ process ID in the subframe i.
5. A method for a user equipment (UE) comprising:
detecting multiple physical downlink control channels (PDCCHs) in a subframe i-K, the multiple PDCCHs being for uplink scheduling; and
transmitting a physical uplink shared channel (PUSCH); and
determining a transmission power of the PUSCH; wherein
if the multiple PDCCHs for one UE are received in the subframe i-K and the PUSCH is transmitted in a subframe i scheduled by a first PDCCH of the multiple PDCCHs in a license-assisted access (LAA) cell, determining the transmission power of the PUSCH based on a value indicated by a transmit power control (TPC) command field which is included in the first PDCCH.
6. A method for an evolved node B (eNB) comprising:
transmitting multiple physical downlink control channels (PDCCHs) in a subframe i-K, the multiple PDCCHs being for uplink scheduling; and
receiving a physical uplink shared channel (PUSCH); and
if the multiple PDCCHs for one UE are transmitted in the subframe i-K and the PUSCH is received in a subframe i scheduled by a first PDCCH of the multiple PDCCHs in a license-assisted access (LAA) cell, the transmission power of the PUSCH is determined based on a value indicated by a transmit power control (TPC) command field which is included in the first PDCCH.