Pilot arrangement method in a mobile radio communication system and transmitter receiver set applied in the method

A technology of a mobile communication system and a configuration method, which is applied in wireless communication, radio transmission system, pilot signal distribution, etc., and can solve the problems of decreased throughput, no pilot channel spacing, and accuracy deterioration.

Active Publication Date: 2010-07-07
FUJITSU LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0019] Therefore, the accuracy of SIR estimation in units of a resource block RB or resource unit RU deteriorates
[0020] 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 accuracy of the CQI is relatively poor, which adversely affects scheduling, and the throughput may be reduced. decline
[0021] 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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  • Pilot arrangement method in a mobile radio communication system and transmitter receiver set applied in the method
  • Pilot arrangement method in a mobile radio communication system and transmitter receiver set applied in the method
  • Pilot arrangement method in a mobile radio communication system and transmitter receiver set applied in the method

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Embodiment Construction

[0044] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0045] Figure 4 It is the first arrangement example of the pilot channel based on the present invention.

[0046] Usually, according to the standard, when the pilot channel (PC) is arranged at predetermined reference intervals, 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), according to figure 2 In the present invention shown, the pilot channels are arranged closely (for example, continuously) at intervals smaller than the usual arrangement intervals in the determined frequency region.

[0047] 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.

[0048] Figure 5 means corresponding to Figure 4 An example of the structure of the transmitting side commun...

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Abstract

A pilot arrangement method in a mobile radio communication system by which, in order to avoid a problem that poor CQI accuracy affects the scheduling of channel arrangement to cause the throughput to be deteriorated, a working frequency band is divided into a plurality of predetermined bands and time division multiplexing is performed. A known pilot symbol is inserted into the predetermined frequency bands at predetermined reference intervals. Furthermore, the known pilot symbol is inserted into at least one of the predetermined frequency bands at smaller intervals than the predetermined reference intervals and arranged.

Description

technical field [0001] The invention relates to a pilot configuration method in a mobile wireless communication system and a transceiver device suitable for the method. Background technique [0002] 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: Third Generation Partnership Project) is discussed under the name of LTE (Long Term Evolution: Long Term Evolution Project). [0003] 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). [0004] figure 1 is a diagram illustrating such frequency and time scheduling. The frequency band to be used is divided into units of resource blocks, and frequencies are allocated to a plurality of user terminals, that is, mobile terminals (UE: User Equipment, user equipment). [0005] In addition, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04J1/00H04J3/00H04J4/00H04B7/155H04B7/26
CPCH04L5/0005H04L5/0048H04L5/0007H04L5/005H04B17/336H04W88/02H04W88/08H04W72/21
Inventor 须田健二关宏之
Owner FUJITSU LTD
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