Terminal device, base station device, communication method, and integrated circuit

Patent metadata

Field	Value
Publication number	US-2016205669-A1
Application number	US-201414910748-A
Country	US
Kind code	A1
Filing date	Aug 8, 2014
Priority date	Aug 9, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A terminal device which communicates with a base station device includes a reception unit that decodes a PDCCH having a DCI format 1C accompanying a CRC which is scrambled by using a TDD reconfiguration RNTI. The DCI format 1C includes an instruction of an uplink-downlink configuration for a plurality of serving cells. Thus, a mobile station device and the base station device can efficiently communicate with each other.

First claim

1 - 30 . (canceled)

31 : A user equipment comprising:
a receiver configured to monitor a physical downlink control channel (PDCCH) with downlink control information (DCI) format 1C with a cyclic redundancy check (CRC) scrambled by eIMTA-RNTI, wherein a first subframe where the receiver monitors the PDCCH on one radio frame is configured by bitmap information by a higher layer, the first subframe corresponds to a bit whose value is 1 within the bitmap information, and a bit whose value is 0 within the bitmap information corresponds to a second subframe where the receiver does not monitor the PDCCH.

32 : The user equipment according to claim 31 , wherein
in a case of a time division duplex (TDD) as a primary cell, the first subframe where the receiver monitors the PDCCH is indicated by a first uplink-downlink configuration in system information as a downlink subframe.

33 : The user equipment according to claim 32 , wherein
the second subframe where the receiver does not monitor the PDCCH corresponds to a bit whose value is 0 within the bitmap information or is indicated by the first uplink-downlink configuration in the system information as an uplink subframe.

34 : The user equipment according to claim 31 , wherein
the eIMTA-RNTI is configured through a dedicated RRC signaling.

35 : The user equipment according to claim 31 , wherein
the receiver is configured to receive the PDCCH which indicates a subframe, which is indicated as an uplink subframe by a first uplink-downlink configuration in system information, as an uplink subframe or a downlink subframe by a second uplink-downlink configuration, and the receiver is configured to not receive the PDCCH which indicates a subframe, which is indicated as a downlink subframe or a special subframe by the first uplink-downlink configuration in the system information, as an uplink subframe by the second uplink-downlink configuration.

36 : The user equipment according to claim 31 , wherein
the receiver is configured to receive the PDCCH which indicates a subframe, which is indicated as a downlink subframe by a downlink reference uplink-downlink configuration, as an uplink subframe or a downlink subframe by a second uplink-downlink configuration, and the receiver is configured to not receive the PDCCH which indicates a subframe, which is indicated as an uplink subframe or a special subframe by the downlink reference uplink-downlink configuration, as a downlink subframe by the second uplink-downlink configuration.

37 : The user equipment according to claim 36 , wherein
the downlink reference uplink-downlink configuration is configured among a set of uplink-downlink configurations restricted based on an uplink reference uplink-downlink configuration.

38 : The user equipment according to claim 36 , wherein
the downlink reference uplink-downlink configuration is configured to a serving cell through dedicated RRC signaling.

39 : A base station apparatus comprising:
a transmitter configured to transmit a physical downlink control channel (PDCCH) with downlink control information (DCI) format 1C with a cyclic redundancy check (CRC) scrambled by eIMTA-RNTI, wherein a first subframe where the transmitter transmits the PDCCH on one radio frame is configured by bitmap information by a higher layer, the first subframe corresponds to a bit whose value is 1 within the bitmap information, and a bit whose value is 0 within the bitmap information corresponds to a second subframe where the transmitter does not transmit the PDCCH.

40 : The base station apparatus according to claim 39 , wherein
in a case of a time division duplex (TDD) as a primary cell, the first subframe where the transmitter transmits the PDCCH is indicated by a first uplink-downlink configuration in system information as a downlink subframe.

41 : The base station apparatus according to claim 40 , wherein
the second subframe where the transmitter does not transmit the PDCCH corresponds to a bit whose value is 0 within the bitmap information or is indicated by the first uplink-downlink configuration in the system information as an uplink subframe.

42 : The base station apparatus according to claim 39 , wherein
the eIMTA-RNTI is configured through a dedicated RRC signaling.

43 : The base station apparatus according to claim 39 , wherein
the transmitter is configured to transmit the PDCCH which indicates a subframe, which is indicated as an uplink subframe by a first uplink-downlink configuration in a system information, as an uplink subframe or a downlink subframe by a second uplink-downlink configuration, and the transmitter is configured to not transmit the PDCCH which indicates a subframe, which is indicated as a downlink subframe or a special subframe by the first uplink-downlink configuration, as an uplink subframe by the second uplink-downlink configuration.

44 : The base station apparatus according to claim 39 , wherein
the transmitter is configured to transmit the PDCCH which indicates a subframe, which is indicated as a downlink subframe by a downlink reference uplink-downlink configuration, as an uplink subframe or a downlink subframe by a second uplink-downlink configuration, and the transmitter is configured to not transmit the PDCCH which indicates a subframe, which is indicated as an uplink subframe or a special subframe by the downlink reference uplink-downlink configuration, as a downlink subframe by the second uplink-downlink configuration.

45 : The base station apparatus according to claim 44 , wherein
the downlink reference uplink-downlink configuration is configured among a set of uplink-downlink configurations restricted based on an uplink reference uplink-downlink configuration.

46 : The base station apparatus according to claim 44 , wherein
the downlink reference uplink-downlink configuration is configured to a serving cell through dedicated RRC signaling.

47 : A communication method of a user equipment, comprising:
monitoring a physical downlink control channel (PDCCH) with downlink control information (DCI) format 1C with a cyclic redundancy check (CRC) scrambled by eIMTA-RNTI, wherein a first subframe for monitoring the PDCCH on one radio frame is configured by bitmap information by a higher layer, the first subframe corresponds to a bit whose value is 1 within the bitmap information, and a bit whose value is 0 within the bitmap information corresponds to a second subframe not for monitoring the PDCCH.

48 : A communication method of a base station apparatus, comprising:
transmitting a physical downlink control channel (PDCCH) with downlink control information (DCI) format 1C with a cyclic redundancy check (CRC) scrambled by eIMTA-RNTI, wherein a first subframe for transmitting the PDCCH on one radio frame is configured by bitmap information by a higher layer, the first subframe corresponds to a bit whose value is 1 within the bitmap information, and a bit whose value is 0 within the bitmap information corresponds to a second subframe not for transmitting the PDCCH.

Assignees

• Sharp Kk

Inventors

• Kusashima Naoki
• Shimezawa Kazuyuki
• Nogami Toshizo
• Suzuki Shoichi
• Imamura Kimihiko
• Ruiz Delgado Alvaro

Classifications

• H04W72/23

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

• H04W72/042 Primary

  Electricity · mapped topic

• H04L5/1469

  using time-sharing · CPC title

• H04L5/0092 Primary

  Indication of how the channel is divided · CPC title

• H04L1/1854

  Scheduling and prioritising arrangements · CPC title