User equipments, base stations and methods

Patent metadata

Field	Value
Publication number	US-2017325258-A1
Application number	US-201715586958-A
Country	US
Kind code	A1
Filing date	May 4, 2017
Priority date	May 9, 2016
Publication date	Nov 9, 2017
Grant date	—

Abstract

A UE is described that includes a higher layer processor configured to receive a dedicated RRC configuration message which configures a License Assisted Access (LAA) cell. The UE also includes a PDCCH receiver configured to receive a first PDCCH and a second PDCCH. The first PDCCH is a PDCCH with CRC scrambled by CC-RNTI, and with a DCI format which contains a subframe configuration field. The second PDCCH is a PDCCH with DCI formats for scheduling physical uplink shared channel(s) (PUSCH(s)) on the LAA cell. If the first PDCCH is detected in subframe n, and the first PDCCH is not detected in subframe n−1, and if the number of occupied OFDM symbols for the subframe n indicated by the subframe configuration field in the subframe n is less than 14, the UE is not required to receive any other physical channels in subframe n except for the second PDCCH.

First claim

What is claimed is:

1 . A user equipment (UE), comprising:
a higher layer processor configured to receive a dedicated radio resource control (RRC) configuration message which configures a License Assisted Access (LAA) cell; and a physical downlink control channel (PDCCH) receiver configured to receive a first PDCCH and a second PDCCH, wherein the first PDCCH is a PDCCH with Cyclic Redundancy Check (CRC) scrambled by Common Control-Radio Network Temporary Identifier (CC-RNTI), and with a Downlink Control Information (DCI) format which contains a subframe configuration field, the second PDCCH is a PDCCH with DCI formats for scheduling physical uplink shared channel(s) (PUSCH(s)) on the LAA cell, and if the first PDCCH is detected in subframe n, and the first PDCCH is not detected in subframe n−1, and if the number of occupied Orthogonal Frequency Division Multiplexing (OFDM) symbols for the subframe n indicated by a subframe configuration field in the subframe n is less than 14, the UE is not required to receive any other physical channels in subframe n except for the second PDCCH.

2 . An evolved node B (eNB) communicating with a user equipment (UE), the eNB comprising:
a higher layer processor configured to send the UE a dedicated radio resource control (RRC) configuration message which configures a License Assisted Access (LAA) cell; and a physical downlink control channel (PDCCH) transmitter configured to transmit a first PDCCH and a second PDCCH, wherein the first PDCCH is a PDCCH with Cyclic Redundancy Check (CRC) scrambled by Common Control-Radio Network Temporary Identifier (CC-RNTI), and with a Downlink Control Information (DCI) format which contains a subframe configuration field, the second PDCCH is a PDCCH with DCI formats for scheduling physical uplink shared channel(s) (PUSCH(s)) on the LAA cell, and if the first PDCCH is detected in subframe n, and the first PDCCH is not detected in subframe n−1, and if the number of occupied Orthogonal Frequency Division Multiplexing (OFDM) symbols for the subframe n indicated by a subframe configuration field in the subframe n is less than 14, the UE is not required to receive any other physical channels in subframe n except for the second PDCCH.

3 . A method for a user equipment (UE), comprising:
receiving a dedicated radio resource control (RRC) configuration message which configures a License Assisted Access (LAA) cell; and receiving a first physical downlink control channel (PDCCH); and receiving a second PDCCH, wherein the first PDCCH is a PDCCH with Cyclic Redundancy Check (CRC) scrambled by Common Control-Radio Network Temporary Identifier (CC-RNTI), and with a Downlink Control Information (DCI) format which contains a subframe configuration field, the second PDCCH is a PDCCH with DCI formats for scheduling physical uplink shared channel(s) (PUSCH(s)) on the LAA cell, and if the first PDCCH is detected in subframe n, and the first PDCCH is not detected in subframe n−1, and if the number of occupied Orthogonal Frequency Division Multiplexing (OFDM) symbols for the subframe n indicated by a subframe configuration field in the subframe n is less than 14, the UE is not required to receive any other physical channels in subframe n except for the second PDCCH.

4 . A method for an evolved node B (eNB) communicating with a user equipment (UE), the method comprising:
sending the UE a dedicated radio resource control (RRC) configuration message which configures a License Assisted Access (LAA) cell; and transmitting a first physical downlink control channel (PDCCH); and transmitting a second PDCCH, wherein the first PDCCH is a PDCCH with Cyclic Redundancy Check (CRC) scrambled by Common Control-Radio Network Temporary Identifier (CC-RNTI), and with a Downlink Control Information (DCI) format which contains a subframe configuration field, the second PDCCH is a PDCCH with DCI formats for scheduling physical uplink shared channel(s) (PUSCH(s)) on the LAA cell, and if the first PDCCH is detected in subframe n, and the first PDCCH is not detected in subframe n−1, and if the number of occupied Orthogonal Frequency Division Multiplexing (OFDM) symbols for the subframe n indicated by a subframe configuration field in the subframe n is less than 14, the UE is not required to receive any other physical channels in subframe n except for the second PDCCH.

Assignees

• Sharp Laboratories America Inc

Inventors

• Nogami Toshizo
• Yin Zhanping

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W88/08

  Access point devices · CPC title

• H04J2211/006

  Single carrier frequency division multiple access [SC FDMA] · CPC title

• H04W88/02

  Terminal devices · CPC title

• H04W72/14 Primary

  Electricity · mapped topic