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Method and device for generating reference signal used for estimating channel quality

A reference signal and channel estimation technology, which is applied in the field of reference signals for channel quality measurement, can solve problems such as not further considering multi-cell design and planning, inability to effectively suppress multi-cell co-frequency interference, and limit CoMP effects, etc., to achieve the goal of the entire network Effect of Spectrum Efficiency Improvement

Inactive Publication Date: 2011-06-08
CHONGQING WIRELESS OASIS COMM TECHCO
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Problems solved by technology

However, in the current LTE and LTE-A systems, the time-frequency orthogonal method is simply used to allocate channel quality reference signals. For the multi-cell situation, only a simple frequency domain shift is performed without further consideration of multi-cell Design and Planning under
None of these technologies in LTE and LTE-A can effectively suppress multi-cell co-channel interference
This greatly limits the role of CoMP

Method used

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  • Method and device for generating reference signal used for estimating channel quality
  • Method and device for generating reference signal used for estimating channel quality
  • Method and device for generating reference signal used for estimating channel quality

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Embodiment Construction

[0042] The implementation process of the present invention is described below by taking the system parameters in LTE as an example.

[0043] figure 1 A schematic diagram of the allocation of the reference signal subband RS-SB in multiple cells according to the present invention is shown. Such as figure 1 As shown, there are P different reference signal subband RS-RBs in cell u and cell v respectively. where any two RS-SBs in cell u (u，i) and RS-SB (u，j) can be the same size or different. However, in the entire network, it is required that the start and end positions of RS in the frequency domain in any two cells are the same, that is, RS-SB (u，i) and RS-SB (v，i) The start and end positions in the frequency domain are exactly the same.

[0044] The present invention is realized in the following ways figure 1 The reference signal subband RS-SB shown:

[0045] The system planning equipment (not shown) divides the OFDM symbol system bandwidth where the reference signal is...

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Abstract

The invention discloses a method and a device for generating a reference signal used for estimating channel quality. The method comprises the following steps of: dividing the band width of an orthogonal frequency division multiple access (OFDMA) symbolic system where the reference signal is into a plurality of sub bands with different lengths, which are used for forming reference signal sub bands; taking a plurality of continuous resource blocks on a symbol of the OFDMA; and interleaving the plurality of continuous resource blocks with the reference signal according to a predetermined frequency domain interval so as to form the reference signal sub bands. Thereafter, system planning equipment controls the set of each reference signal sub band of each antenna in each base station in the whole multi-cell network so as to align the start and end positions of the reference signal sub bands on frequency, wherein the resource blocks (RB) are a plurality of continuous subcarriers on frequency domain.

Description

technical field [0001] The present invention relates to a reference signal (i.e. pilot frequency) used for channel quality measurement in a cellular mobile communication system, in particular to a method used in multi-cell, multi-carrier, and multi-antenna systems for estimating the current cell and adjacent cells A downlink reference signal generating method and device for estimating channel quality. Background technique [0002] The Orthogonal Frequency Division Multiplexing (OFDM) system is the mainstream multi-carrier technology in the International Mobile Telecommunications-Advanced (IMT-A) system accepted by the International Telecommunication Union (ITU) in October 2009. These systems generally adopt the technology of combining OFDM multi-carrier and multi-antenna. The combination of multi-antenna technology and OFDM technology can greatly improve the peak rate and average throughput of the wireless communication system. Judging from the current technology, the combi...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L27/26
Inventor 黎超段世平肖业平焦现军
Owner CHONGQING WIRELESS OASIS COMM TECHCO
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