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Mobile communication system and communication method therein

A technology of a mobile communication system and a communication method, which is applied to the mobile communication system and the communication field in the mobile communication system, can solve the problems of bad scheduling effect, deterioration of SIR estimation accuracy, and no pilot channel interval involved.

Inactive Publication Date: 2013-10-02
FUJITSU LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] Therefore, the accuracy of SIR estimation in units of a resource block RB or resource unit RU deteriorates
[0021] Therefore, when the interval of the pilot channel is large, the accuracy of SIR estimation deteriorates, and even when scheduling is performed based on the CQI corresponding to the SIR, the CQI accuracy is relatively poor, which adversely affects scheduling, and the throughput may be reduced. decline
[0022] The above-mentioned Patent Document 1 describes a technique for improving the estimation accuracy of SIR by using a pilot and a known sequence, but does not refer to the interval of the pilot channel

Method used

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  • Mobile communication system and communication method therein
  • Mobile communication system and communication method therein
  • Mobile communication system and communication method therein

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Embodiment Construction

[0045] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0046] Figure 4 It is the first arrangement example of the pilot channel based on the present invention.

[0047] Generally, when a pilot channel (PC) is arranged at a predetermined reference interval, for example, at intervals of 6 subcarriers (SC) (6 frequency bands obtained by dividing the used frequency band into a plurality of predetermined frequency bands) as a standard according to the specification, according to figure 2 In the present invention shown, the pilot channels are arranged closely (for example, continuously) at an interval smaller than the usual arrangement interval in the determined frequency region.

[0048] That is, in Figure 4 In the shown first embodiment, pilot channels are continuously allocated to resource blocks RB at the top of each subframe.

[0049] Figure 5 means corresponding to Figure 4 An example of the structure of the tran...

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Abstract

The invention provides a mobile communication system and a communication method therein. The used frequency band is divided into a plurality of preset frequency bands and is subjected to time division multiplexing. The method can avoid the problem that the throughput is reduced due to adverse influence of poor accuracy of CQI (Channel Quality Indicator) precision on the scheduling of channel configuration. According to the method, known pilot frequency symbols are inserted into the plurality of preset frequency bands at the preset reference intervals; and the known pilot frequency symbols are inserted and configured in at least one of the plurality of preset frequency bands at the interval which is less than the preset reference interval.

Description

[0001] This application is a divisional application of an invention patent application with an application date of August 2, 2007, an application number of 200780100130.0, and an invention title of "Pilot Configuration Method in Mobile Wireless Communication System and Transmitting Device Applicable to the Method". technical field [0002] The present invention relates to a mobile communication system and a communication method in the mobile communication system. Background technique [0003] Regarding the mobile wireless communication system, for the third generation mobile communication and even the next generation wireless access method, in 3GPP (3 rd Generation Partnership Project: The third generation cooperation project) is discussed in the name of LTE (Long Term Evolution: long-term evolution project). [0004] In LTE, the premise is to perform frequency and time scheduling in units of resource blocks (RB: Resource Block) or resource units (RU: Resource Unit). [00...

Claims

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Application Information

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IPC IPC(8): H04L5/00
Inventor 须田健二关宏之
Owner FUJITSU LTD