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User terminal and radio communication method

A user terminal and terminal technology, applied in wireless communication, wireless communication service, connection management, etc.

Active Publication Date: 2017-09-26
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system band is, for example, equivalent to the existing LTE band (20MHz), component carrier, etc.

Method used

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  • User terminal and radio communication method
  • User terminal and radio communication method
  • User terminal and radio communication method

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Experimental program
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Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0028] In order to reduce the cost of MTC terminals, it has been studied to suppress the processing capability of terminals by reducing the peak rate, limiting resource blocks, and receiving RF (radio frequency (radio frequency)) limitations. For example, in order to reduce the cost of MTC terminals, the following restrictions have been studied. In unicast transmission using a physical downlink shared channel (PDSCH: physical downlink shared channel), the maximum transport block size is limited to 1000 bits. In broadcast channel (BCCH: broadcast control channel) transmission using the PDSCH, the maximum transport block size is limited to 2216 bits. The bandwidth of the downlink data channel is limited to 6 resource blocks (PRB: physical resource block). The receiving RF in the MTC terminal is limited to 1.

[0029] Since the low-cost MTC terminals are limit...

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Abstract

In order to suitably receive multiple channels even when the use band is limited to a narrow band that is part of a system band, this user terminal, the use band of which is limited to a narrow band that is part of the system band, is provided with a receiving unit which receives broadcast transport blocks and unicast transport blocks, and a control unit which switches between the received transport blocks depending on the RRC state of the local terminal. In the case of the receiving unit receiving both broadcast transport blocks and unicast transport blocks, if the local terminal is in an RRC connected state, then the control unit controls to receive the unicast transport blocks on the basis of a predefined priority level.

Description

technical field [0001] The invention relates to a user terminal and a wireless communication method in the next generation mobile communication system. Background technique [0002] In the UMTS (universal mobile telecommunications system) network, long term evolution (LTE: long termevolution) is standardized for the purpose of further high-speed data rate, low delay, etc. (Non-Patent Document 1). LTE-advanced has been standardized for the purpose of widening the broadband domain and increasing the speed from LTE, and further studies have been conducted on the successor system of LTE, for example, called FRA (future radio access). [0003] In recent years, along with the reduction in cost of communication devices, the development of technology for device-to-device communication (M2M: machine-to-machine) in which devices connected to a network communicate with each other and automatically control them without human hands has been actively developed. In particular, regarding 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/02H04W4/04H04W76/27
CPCH04W72/02H04W4/06H04W72/56H04W72/569H04W74/002H04W76/27H04W28/0268H04W68/005
Inventor 武田和晃刘柳蒋惠玲牟勤
Owner NTT DOCOMO INC