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Communication device and communication method

A technology of equipment, base station equipment, applied in the field of communication

Inactive Publication Date: 2010-02-03
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem that the mobile station device cannot transmit the reception quality information using the PUSCH if there is no uplink data to be transmitted to the base station device

Method used

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  • Communication device and communication method
  • Communication device and communication method
  • Communication device and communication method

Examples

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no. 1 example

[0053] First, the mobile communication system according to the first embodiment of the present invention will be described. The mobile communication system according to this embodiment includes base station equipment and mobile station equipment, and has Figure 5 (A) The mobile communication system is similarly configured. figure 1 It is a functional block diagram showing a schematic configuration example of the base station device according to the present embodiment. Such as figure 1 As shown, the base station equipment A includes a data control unit 1, a modulation and coding unit 3, a mapping unit 5, an inverse fast Fourier transform (IFFT) unit 7, a wireless transmitting unit 11, a wireless receiving unit 15, and a fast Fourier transform (FFT) ) Unit 17, demodulation and decoding unit 21, data extraction unit 23, transmission information control unit 27, and antenna 31. The transmission information control unit 27 includes a scheduler unit 27a, a modulation and coding con...

no. 2 example

[0085] Figure 4 It is a diagram for explaining the communication technology according to the second embodiment of the present invention. Figure 4 The figure on the left shows the transmission form of the control signal (L1 / L2 grant), reception quality information, uplink data and information sent in the uplink sent from the base station device to the mobile station device. The figure on the right The processing flow corresponding to the time slot is shown. in Figure 4 In, as an example, the operation from #time slot 1 to #time slot 12 will be shown.

[0086] In the second embodiment of the present invention, the base station device sends RRC signaling including the reception quality information transmission instruction information to the mobile station device. The base station equipment also sends to the mobile station equipment the L1 / L2 authorization including the reception quality information transmission permission information which allows the mobile station equipment t...

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Abstract

A mobile communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signalreceived from the base station apparatus, characterized in that the base station apparatus transmits information for instructing transmission of reception quality information without uplink data included in an uplink data transmission permission signal, and the mobile station apparatus transmits reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data. This allows a mobile station apparatus to transmit reception quality information including a large amount of information even if there is nouplink data between the mobile station apparatus and the base station apparatus, and the transmission control flexibly responding to the amount of information and the frequency of transmissions of thereception quality information transmitted from the mobile station apparatus is possible. Therefore, more efficient communication control (scheduling) between the base station apparatus and the mobilestation apparatus can be achieved.

Description

Technical field [0001] The present invention relates to communication technology, in particular to a mobile communication system in which a mobile station device measures the reception quality of a signal received from a base station device to send reception quality information to the base station device, and to a base station device and mobile station device suitable for the mobile communication system . Background technique [0002] Recently, the demand for data communication in mobile communication systems has been increasing, and various technologies have been proposed to obtain high frequency use efficiency that meets the increase in communication data associated with the demand. One technique for increasing the efficiency of frequency usage is OFDMA (Orthogonal Frequency Division Multiple Access). OFDMA relates to a technique of a modulation method that uses the same frequency for communication in all cells in a communication area constructed by cells, and OFDMA can realiz...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W72/12H04L5/00
CPCH04L5/0007H04L1/0001H04L5/0064H04W72/0413H04L5/0094H04B17/0067H04L25/022H04L5/0037H04L5/0053H04W72/085H04B17/24H04W72/21H04W72/542H04W72/20H04W24/10
Inventor 相羽立志山田升平桂川浩
Owner SHARP KK
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