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Special reference signal optimization method suitable for LTE (long-term evolution) cell of indoor channel

A cell-specific reference and reference signal technology, applied in wireless communication, electrical components, network planning, etc., can solve problems such as waste and inability to improve resource utilization, and achieve improved communication efficiency, energy utilization, and efficiency Effect

Inactive Publication Date: 2015-06-24
PEKING UNIV
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The current conventional cell-specific signal arrangement method is mainly designed for the outdoor wireless transmission environment. If it is directly applied to the indoor environment, although the quality of communication can be guaranteed, the utilization rate of resources cannot be improved, resulting in unnecessary waste of

Method used

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  • Special reference signal optimization method suitable for LTE (long-term evolution) cell of indoor channel
  • Special reference signal optimization method suitable for LTE (long-term evolution) cell of indoor channel
  • Special reference signal optimization method suitable for LTE (long-term evolution) cell of indoor channel

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Embodiment

[0044] Considering the particularity of indoor channels, select the IndoorB channel with the largest multipath delay expansion in Table 1 as an example. v m =36km / h (10m / s, which is obviously a speed that can hardly be reached in an indoor environment), fc=2GHz, Δf=15kHz, τ max =700ns. then there is

[0045] f d = v m c f c = 36 / 3.6 3 × 10 8 × 2 × 10 9 = 66.7 Hz

[0046] T c = 1 2 f d = 1 ...

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Abstract

The invention provides a special reference signal optimization method suitable for an LTE (long-term evolution) cell of an indoor channel. The method comprises the following steps of: firstly, selecting an indoor channel parameter; calculating an interval of a reference signal on a time domain according to the indoor channel parameter; and calculating the interval of the reference signal on a frequency domain according to the indoor channel parameter. According to the characteristics of the indoor wireless channel, the arrangement mode of the special reference signal in the LTE cell is optimized by utilizing a related calculation, so that the resource efficiency of the system is improved at the premise of ensuring the performance of the system. Therefore, the entire performance of the system is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an LTE cell-specific reference signal optimization method suitable for indoor channels. Background technique [0002] In the LTE system, the cell-specific reference signal is a reference signal sent in all downlink common subframes in units of a cell, and is used for channel estimation and related demodulation. The reference signals of the cell-specific reference signal are distributed on the entire time-frequency resource block according to certain rules. In order to accurately estimate and track the time-varying process of the multipath channel, the reference signal insertion interval needs to meet certain requirements in the resource block frequency and time directions. [0003] The reference signal insertion interval in the frequency domain direction of the resource block depends on the coherent frequency of the wireless multipath channel and is related to the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/20
Inventor 尚勇钟科杰封晓弢
Owner PEKING UNIV