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User terminal, wireless base station, and wireless communication method

A user terminal and wireless communication technology, applied in wireless communication, distribution between users/terminals, multiplex communication, etc.

Active Publication Date: 2018-07-31
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In LTE Rel.13, the carrier aggregation (LAA: License-Assisted Access) between the licensed band and the unlicensed band is taken as the research object, but in the future, dual connectivity (DC: Dual Connectivity) or The stand alone of non-licensed zone may also become the object of research

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
Comparison scheme
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no. 1 Embodiment approach

[0077] The first embodiment relates to a PF / resource selection method when only HARQ-ACK / SR is transmitted. The UE applies at least one of Embodiments 1.1-1.3 according to how many correspondences between PUCCH resources and ARIs are set.

Embodiment approach 11

[0079] Embodiment 1.1 relates to a PF selection method in a case where the UE configures only one PF resource set for the ARI (the correspondence relationship between the ARI and only one PF resource set is set).

[0080] Fig. 4 is an explanatory diagram of Embodiment 1.1. Figure 4A It is a diagram showing an example of the correspondence between ARI and PF resources in Embodiment 1.1. In embodiment 1.1, such as Figure 4A As shown, only 1 PF (PFi) (i = 3, 4 or 5) was associated with ARI. In addition, the size of the resource for PFi may be set to be different for each corresponding ARI, or may be set to be the same.

[0081] Figure 4B It is a diagram showing an example of the relationship between the number of HARQ-ACK / SR bits and the required SINR in Embodiment 1.1. The tendency that the required SINR increases as the number of transmitted bits increases is the same in all PFs.

[0082] In the case where only PF3 resources are associated with ARI, the UE sends HARQ-AC...

Embodiment approach 12

[0087] Embodiment 1.2 relates to a PF selection method in a case where the UE configures (associates) two PF resource sets for the ARI. The UE judges the PF for transmission based on the number of HARQ-ACK / SR bits. Hereinafter, the case where PF3 and PF4 resources are set (Embodiment 1.2-1), the case where PF3 and PF5 resources are set (Embodiment 1.2-2), and the case where PF4 and PF5 resources are set will be specifically described. The situation (embodiment 1.2-3).

[0088] Fig. 5 is an explanatory diagram of Embodiment 1.2-1. Figure 5A It is a diagram showing an example of the correspondence between ARI and PF resources in Embodiment 1.2-1. In embodiment 1.2-1, such as Figure 5A As shown, resources of two PFs (PF3, PF4) are associated with ARI.

[0089] Figure 5B It is a diagram showing an example of the relationship between the number of HARQ-ACK / SR bits and the required SINR in Embodiment 1.2-1. The thick line in the figure corresponds to the required SINR requi...

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Abstract

In order to perform appropriate feedback of uplink control information even when the number of component carriers that can be configured for a user terminal is increased beyond existing systems, a user terminal according to one embodiment of the present invention, for which a plurality of component carriers can be configured, is characterized by having: a reception unit that receives downlink control information and / or RRC (Radio Resource Control) signaling; a transmission unit that transmits uplink control information (UCI), which includes at least delivery confirmation information, using a specified PUCCH format (PF: Physical Uplink Control Channel Format) by means of a specified resource; and a control unit that determines the specified PF and the specified resource on the basis of thepayload size of at least a portion of the UCI.

Description

technical field [0001] The present 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 a UMTS (Universal Mobile Telecommunications System) network, Long Term Evolution (LTE: Long Term Evolution) has become a standard for further high-speed data rate, low delay, and the like (Non-Patent Document 1). In addition, LTE-A (also called LTE Advanced, LTE Rel. 10, 11, or 12) has become a standard for the purpose of further wideband and high speed from LTE (also called LTE Rel. 8 or 9). Successor systems to LTE (for example, also referred to as FRA (Future Radio Access), 5G (5th generation mobile communication system), LTE Rel.13, etc.) are being studied. [0003] In LTE-A, Carrier Aggregation (CA: Carrier Aggregation) is adopted in which a predetermined bandwidth (maximum 20 MHz) is used as a basic unit to simultaneously use a plurality of carriers for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04J1/00H04L27/26H04W72/12
CPCH04L5/0053H04L5/0055H04L5/005H04L5/0051H04L1/0026H04L1/1671H04L5/001H04L5/0042H04L5/0057H04L1/0073H04W72/20H04L27/26H04J1/00H04W72/21H04W72/23
Inventor 武田一树永田聪王理惠刘柳蒋惠玲
Owner NTT DOCOMO INC