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Patent Searching and Data


Title:
WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/119377
Kind Code:
A1
Abstract:
Provided are a wireless communication device and a wireless communication method whereby, even when transitioning between a connected state (RRC-Connected) and a suspended state (RRC-Suspended) in an RRC layer, a state in which communication cannot be started due to a state mismatch in an intermediate layer below the RRC layer can be reliably avoided. UE 100 is provided with: a state control unit 120 which controls the RRC layer to be in a connected state or a suspended state; and an interrupt process unit 130 which, when the RRC layer has transitioned from the connected state to the suspended state, initializes at least some states in the intermediate layer, specifically the MAC layer/RLC layer/PDCP layer. The state control unit 120, on the basis of the state of the intermediate layer initialized by the interrupt process unit 130, returns the RRC layer from the suspended state to the connected state.

Inventors:
UCHINO TOORU (JP)
HAPSARI WURI ANDARMAWANTI (JP)
TAKAHASHI HIDEAKI (JP)
Application Number:
PCT/JP2016/089016
Publication Date:
July 13, 2017
Filing Date:
December 28, 2016
Export Citation:
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Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W76/04; H04W80/02
Other References:
"Architecture enhancements for Cellular Internet of Things (Release 13)", 3GPP TR 23.720, V1.2.0, 23 November 2015 (2015-11-23), XP055488771
NTT DOCOMO, INC: "UP modelling for U-plane solution", 3GPP TSG-RAN WG2 NB-IOT AD-HOC MEETING R2-160526, 13 January 2016 (2016-01-13), XP051066510
NTT DOCOMO, INC: "UP modelling for U-plane solution", 3GPP TSG-RAN WG2 MEETING #93 R2-161332, 3GPP, 5 February 2016 (2016-02-05), XP051065488
NTT DOCOMO, INC: "UP modelling for U-plane solution", 3GPP TSG-RAN WG2 MEETING #93BIS R2-162578, 2 April 2016 (2016-04-02), XP051082469
NTT DOCOMO, INC: "UP modelling for U-plane solution", 3GPP TSG-RAN WG2 MEETING #93BIS R2-162485, 2 April 2016 (2016-04-02), XP051082431
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture enhancements for Cellular Internet of Things (Release 13", 3GPP TR 23.720, November 2015 (2015-11-01)
See also references of EP 3402297A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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