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Terminal device, base station device, communication system, and communication method

A technology of terminal device and communication method, which is applied in the direction of transmission system, wireless communication, digital transmission system, etc., can solve problems such as interference, and achieve the effect of effective reporting

Active Publication Date: 2013-12-18
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, countermeasures against interference from terminal devices located in cell edge areas are required

Method used

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  • Terminal device, base station device, communication system, and communication method
  • Terminal device, base station device, communication system, and communication method
  • Terminal device, base station device, communication system, and communication method

Examples

Experimental program
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no. 1 approach

[0051] figure 1 It is a schematic configuration diagram showing the configuration of the communication system according to the first embodiment of the present invention. The communication system in the figure is assumed to be an LTE-A system, and includes base station devices (base station, transmission station, downlink transmission device, uplink reception device, eNodeB) 101 constituting a cell, terminal devices (mobile station devices, mobile station , a receiving station, an uplink sending device, a downlink receiving device, a mobile terminal, and a UE (User Equipment, user equipment)) 102 . The terminal apparatus 102 calculates the reception quality information ( Alternatively, it is also referred to as channel state information (CSI) 105 , and is reported to the base station apparatus 101 via an uplink channel. More specifically, the terminal apparatus 102 refers to the downlink reference signal (hereinafter also referred to as “downlink reference signal DLR” or “do...

no. 2 approach ＞

[0092] In the first embodiment, when a subframe group is set, the configuration is described in which CSI corresponding to the second and subsequent CSI-RS is calculated in both subframe groups. On the other hand, in the second embodiment, when a subframe group is configured, a configuration is described in which CSI corresponding to the second and subsequent CSI-RS is calculated in the first subframe group. Below, refer to Figure 11 ~ Figure 13 A second embodiment of the present invention will be described. In addition, since the base station device and the terminal device according to this embodiment can communicate with Figure 4 as well as Figure 5 The configuration examples shown above are implemented with the same configuration, so detailed descriptions will not be repeated.

[0093] Figure 11 An example of a procedure in periodic CSI feedback in this embodiment is shown. Figure 11 The shown procedure is an example of a procedure for periodically feeding back CS...

no. 3 approach ＞

[0113] In the third embodiment, a configuration for calculating CSI corresponding to the second and subsequent CSI-RSs in a CoMP (Coordinated Multiple Point) system will be described. Below, refer to Figure 14 ~ Figure 17 A third embodiment of the present invention will be described. In addition, since the base station device and the terminal device according to this embodiment are Figure 4 as well as Figure 5 The configuration examples shown above are implemented with the same configuration, so detailed descriptions will not be repeated.

[0114] Figure 14 It is a schematic configuration diagram showing the configuration of a communication system according to a third embodiment of the present invention. The communication system in the figure assumes an LTE-A system, and includes a base station device 1401 constituting a cell, a coordinating base station device (or a coordinating transmission point) 1402 , and a terminal device 1403 . When adaptively controlling trans...

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PUM

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Abstract

Provided is a terminal device for communicating with a base station. The terminal device includes: a receiving unit for receiving a plurality of reference signals for measuring channel state information; a channel state information generation unit for generating a plurality of channel state information with reference to each of the plurality of reference signals for measuring channel state information; and a report transmission unit for reporting each of the plurality of channel state information to the base station device.

Description

technical field [0001] The present invention relates to a terminal device, a base station device, a communication system, and a communication method. Background technique [0002] Based on 3GPP (Third Generation Partnership Project, Third Generation Partnership Project), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access), LTE (Long Term Evolution, Long Term Evolution) and LTE-A (LTE- Advanced) and WiMAX (Worldwide Interoperability for Microwave Access) and other mobile wireless communication systems, base station devices (base station, transmitting station, downlink transmitting device, uplink receiving device, eNodeB) or The area covered by the transmission station by the base station apparatus has a cellular structure in which a plurality of cells are arranged so that the communication area can be expanded. In addition, by using different frequencies between adjacent cells or sectors, terminal devices (mobile station devices, receiving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/10H04W28/06
CPCH04W24/10H04L5/0057H04L1/0026H04L1/003H04L1/0031H04W72/542
Inventor 野上智造示沢寿之今村公彦上村克成
Owner SHARP KK
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