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User terminal, wireless base station, and wireless communication method

A user terminal and wireless resource technology, applied in the field of user terminal, wireless base station and wireless communication

Active Publication Date: 2018-05-11
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Rel.13LTE, the carrier aggregation (LAA: License-Assisted Access) between the licensed band and the unlicensed band is set as the research object, but in the future, dual connection or unlicensed band The independent (stand-alone) may also become the research object

Method used

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  • User terminal, wireless base station, and wireless communication method
  • User terminal, wireless base station, and wireless communication method
  • User terminal, wireless base station, and wireless communication method

Examples

Experimental program
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Embodiment Construction

[0030] figure 1 It is an explanatory diagram of carrier aggregation (CA). Such as figure 1 As shown, in CA up to LTE Rel.12, a maximum of five component carriers (CCs) (CC #1 to CC #5) are bundled with the LTE Rel.8 system band as one unit. That is, in carrier aggregation up to LTE Rel.12, the number of CCs that can be set for each user terminal (UE: User Equipment (User Equipment)) is limited to a maximum of five.

[0031] On the other hand, in the carrier aggregation of LTE Rel.13, it is studied to bundle more than 6 CCs to realize further band expansion. That is, in the CA of LTE Rel.13, it is studied to expand the number of CCs (cells) that can be configured for each user terminal to six or more (CA enhancement). For example, if figure 1 As shown, in the case of bundling 32 CCs (CC#1 to CC#32), a maximum bandwidth of 640 MHz can be secured.

[0032] In this way, it is expected to realize more flexible and high-speed wireless communication by expanding the number of CC...

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Abstract

The purpose of the present invention is to enable UCI including at least HARQ-ACK and CSI to be transmitted with appropriate quality in cases where the number of component carriers (CC) that can be set for each user terminal expands beyond that of an existing system. This user terminal separately encodes the HARQ-ACK of at least one CC, and the CSI of at least one CC. The user terminal maps and transmits the encoded bit sequence of the HARQ-ACK and the encoded bit sequence of the CSI in wireless resources forming the same PUCCH.

Description

technical field [0001] The invention relates to a user terminal, a wireless base station 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 Term Evolution) has been standardized for the purpose of further increasing high-speed data rate, low delay, etc. (Non-Patent Document 1). LTE-Advanced (also called LTE Rel. 10, 11, or 12) has been standardized for the purpose of further wideband domainization and high speed from LTE (also called LTE Rel. 8), and subsequent systems (also called LTE Rel. Called LTERel.13, etc.). [0003] The system band of LTE Rel.10 / 11 includes at least one component carrier (CC: Component Carrier) with the system band of LTE Rel.8 as a unit. In this way, a case where a plurality of component carriers is aggregated to realize broadband domain is called carrier aggregation (CA: Carrier Aggreg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H03M13/23H04J1/00H04L27/01H04W72/02H04W72/04
CPCH03M13/23H04J1/00H04J11/00H04W72/02H04W72/04H04L5/001H04L5/0055H04L5/0057H04L1/0081H04L1/0073H04L5/0053H04L1/1861H04L1/001H04W72/21H04W72/20
Inventor 武田一树永田聪
Owner NTT DOCOMO INC