Terminal apparatus, base station apparatus, communication system, communication method, and integrated circuit

Patent metadata

Field	Value
Publication number	US-2016174247-A1
Application number	US-201414910119-A
Country	US
Kind code	A1
Filing date	Aug 6, 2014
Priority date	Aug 6, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

A base station device transmits common control information to a plurality of mobile station devices through a single ePDCCH message. Each mobile station device monitors a common search space in which these common control messages are sent and is capable of detecting them and recovering the information contained therein.

First claim

1 - 56 . (canceled)

57 . A terminal comprising:
a higher layer processor configured to configure a parameter for Enhanced Interference Management and Traffic Adaptation (eIMTA) for a serving cell, wherein one zero-power Channel State Information-Reference Signal (CSI-RS) resource configuration is configured for the serving cell in a case that the parameter for the eIMTA is not configured, and two zero-power CSI-RS resource configurations are configured for the serving cell in a case that the parameter for the eIMTA is configured.

58 . The terminal according to claim 57 , wherein
the one zero-power CSI-RS resource configuration or the two zero-power CSI-RS resource configurations are used for determining a resource element mapping of an enhanced physical downlink control channel.

59 . The terminal according to claim 57 , wherein
one of the two zero-power CSI-RS resource configurations is configured in a case that the parameter for eIMTA is configured and two subframe sets are configured for the serving cell.

60 . The terminal according to claim 59 , wherein
the one of the two zero-power CSI-RS resource configurations indicates a rate matching parameter.

61 . The terminal according to claim 57 , wherein
an enhanced physical downlink control channel is not mapped to resource elements based on the one zero-power CSI-RS resource configuration or the two zero-power CSI-RS resource configurations.

62 . A communication method for a terminal device, the communication method comprising:
configuring a parameter for Enhanced Interference Management and Traffic Adaptation (eIMTA) for a serving cell, wherein one zero-power Channel State Information-Reference Signal (CSI-RS) resource configuration is configured for the serving cell in a case that the parameter for the eIMTA is not configured, and two zero-power CSI-RS resource configurations are configured for the serving cell in a case that the parameter for the eIMTA is configured.

63 . The communication method according to claim 62 , wherein
the one zero-power CSI-RS resource configuration or the two zero-power CSI-RS resource configurations are used for determining a resource element mapping of an enhanced physical downlink control channel.

64 . The communication method according to claim 62 , wherein
one of the two zero-power CSI-RS resource configurations is configured in a case that the parameter for eIMTA is configured and two subframe sets are configured for the serving cell.

65 . The communication method according to claim 64 , wherein
the one of the two zero-power CSI-RS resource configurations indicates a rate matching parameter.

66 . The communication method according to claim 62 , wherein
an enhanced physical downlink control channel is not mapped to resource elements based on the one zero-power CSI-RS resource configuration or the two zero-power CSI-RS resource configurations.

67 . An integrated circuit mountable on a terminal, the integrated circuit comprising:
a higher layer processor configured to configure a parameter for Enhanced Interference Management and Traffic Adaptation (eIMTA) for a serving cell, wherein one zero-power Channel State Information-Reference Signal (CSI-RS) resource configuration is configured for the serving cell in a case that the parameter for the eIMTA is not configured, and two zero-power CSI-RS resource configurations are configured for the serving cell in a case that the parameter for the eIMTA is configured.

68 . The integrated circuit according to claim 67 , wherein
the one zero-power CSI-RS resource configuration or the two zero-power CSI-RS resource configurations are used for determining a resource element mapping of an enhanced physical downlink control channel.

69 . The integrated circuit according to claim 67 , wherein
one of the two zero-power CSI-RS resource configurations is configured in a case that the parameter for eIMTA is configured and two subframe sets are configured for the serving cell.

70 . The integrated circuit according to claim 69 , wherein
the one of the two zero-power CSI-RS resource configurations indicates a rate matching parameter.

71 . The integrated circuit according to claim 67 , wherein
an enhanced physical downlink control channel is not mapped to resource elements based on the one zero-power CSI-RS resource configuration or the two zero-power CSI-RS resource configurations.

Assignees

• Sharp Kk

Inventors

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

Classifications

• H04W72/1273 Primary

  of downlink data flows · CPC title

• H04W28/18

  Negotiating wireless communication parameters · CPC title

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W28/06

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title