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Terminal device, base station device, transmission method, and reception method

A technology of a terminal device and a transmission method, which is applied in directions such as a separation device of a transmission path, allocation between users/terminals, power management, etc., can solve problems such as increased PUCCH overhead, and achieve the effect of suppressing deterioration.

Active Publication Date: 2018-01-16
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the Figure 5 The shown macro cell has many terminals used as PCell, so there is a concern that the PUCCH overhead in the macro cell will increase as the number of terminals increases or the downlink data communication in the terminal increases

Method used

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  • Terminal device, base station device, transmission method, and reception method
  • Terminal device, base station device, transmission method, and reception method
  • Terminal device, base station device, transmission method, and reception method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0078] The communication system of this embodiment is, for example, an LTE-A system, and includes a base station 100 and a terminal 200. The base station 100 is, for example, a base station corresponding to the LTE-A system, and the terminal 200 is, for example, a terminal corresponding to the LTE-A system.

[0079] Figure 7 It is a block diagram showing the main configuration of the terminal 200 of this embodiment.

[0080] Figure 7 The terminal 200 shown is a terminal device that uses a plurality of component frequency bands to communicate with a base station device. The response signal generating unit 212 generates a response signal using the error detection results of the downlink data respectively transmitted in a plurality of component bands, and the control unit 208 uses instruction information (PUCCH transmission cell information) indicating the component band for transmitting the response signal, and transmits Respond to the signal. Here, the plurality of component ban...

Embodiment approach 2

[0212] In this embodiment, a case where the number of downlink component bands configured for the terminal is 2 or more and 5 or less (PCell, SCell1, ...) and there are 2 PUCCH transmission cell candidates will be described.

[0213] In addition, the base station and terminal of this embodiment have the same basic structure as the base station 100 and terminal 200 of the first embodiment, and therefore are cited Figure 8 , Picture 9 Be explained.

[0214] The base station 100 presets which SCell to use for the terminal 200 to notify the PUCCH to transmit the cell information X. In addition, the base station 100 does not use PCell to notify PUCCH to transmit cell information X.

[0215] The following describes a case where the PCell and the four downlink component bands of SCell1 to SCell3 are configured for the terminal 200. In addition, PCell and SCell1 are not used to notify PUCCH to transmit cell information X, and SCell2 and SCell3 are used to notify PUCCH to transmit cell inf...

Embodiment approach 3

[0252] In this embodiment, the case where the number of downlink component bands configured for the terminal is 3 or more and 5 or less (PCell, SCell1, SCell2, ...), and the PUCCH transmission cell candidates are 3 or more and configured for the terminal The number of downlink component bands is less than that.

[0253] In addition, the base station and terminal of this embodiment have the same basic structure as the base station 100 and terminal 200 of the first embodiment, and therefore are cited Figure 8 , 9 Be explained.

[0254] The base station 100 presets which SCell to use for the terminal 200 to notify the PUCCH to transmit the cell information X. In addition, the base station 100 does not use PCell to notify PUCCH to transmit cell information X.

[0255] The following describes a case where the PCell and the five downlink component bands of SCell1 to SCell4 are set to the terminal 200. In addition, PCell and SCell1 are not used to notify PUCCH to transmit cell informatio...

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Abstract

The terminal of the present invention performs PUCCH detection in the base station using a single uplink component frequency band, thereby being able to suppress deterioration of PUCCH detection accuracy in the base station. A control unit (208) transmits a response signal using indication information indicating a component frequency band used to transmit the response signal. Here, the above-mentioned plurality of component frequency bands include a first component frequency band and a second component frequency band different from the first component frequency band, and the first component frequency band is used when downlink data is allocated to both the first component frequency band and the second component frequency band at the same time. The component frequency band for transmitting the response signal, the above instruction information is notified using the second component frequency band when at least the downlink data is allocated to the second component frequency band, and when the downlink data is allocated to both the first component frequency band and the second component frequency band at the same time In this case, the component frequency band indicated by the indication information is the first component frequency band.

Description

Technical field [0001] The present invention relates to a terminal device, a base station device, a transmission method, and a reception method. Background technique [0002] In 3GPP LTE, OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) is adopted as the communication method of the downlink. In a wireless communication system to which 3GPP LTE is applied, a base station uses predetermined communication resources to transmit synchronization signals (Synchronization Channel: SCH) and broadcast signals (Broadcast Channel: BCH). In addition, the terminal first acquires the SCH to ensure synchronization with the base station. Then, the terminal obtains parameters (for example, bandwidth, etc.) dedicated to the base station by reading the BCH information (see Non-Patent Documents 1, 2, and 3). [0003] In addition, after completing the acquisition of the parameters dedicated to the base station, the terminal sends a connection request...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
CPCH04L5/0048H04L5/0053H04W72/04H04L5/001H04L5/0055H04J11/0046H04L1/1861H04W72/21H04J11/003H04L5/0037H04W52/243H04W52/48
Inventor 大泉透田村尚志
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA