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Channel measuring method for LTE (Long Term Evolution) system

A technology for channel measurement and location information, applied in the field of communication, can solve problems such as shortage of CSI-RS resources, and achieve the effect of reducing the amount of configuration information transmission, reducing the amount of information feedback, and reducing the impact

Inactive Publication Date: 2014-12-24
沈阳市联盛科技有限公司
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Problems solved by technology

[0012] The present invention provides a channel measurement method of an LTE system to solve the problem of CSI-RS resource shortage in the existing CoMP mode and improve the resource utilization rate of PDSCH

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  • Channel measuring method for LTE (Long Term Evolution) system
  • Channel measuring method for LTE (Long Term Evolution) system
  • Channel measuring method for LTE (Long Term Evolution) system

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0052] The invention discloses a channel measurement method in an LTE system, and the method is suitable for working in multi-point coordinated CoMP mode. figure 1 It is a flowchart of a channel measurement method in an LTE system in the present invention; as figure 1 as shown,

[0053] Step 101 , the base station divides a reference symbol placement area in the physical downlink shared channel PDSCH for a signal transmission point in a CoMP, and sets a plurality of reference symbols in the reference symbol placement area.

[0054] Step 102, in the reference symbol placement area, the base station sets a resource configuration mode with an identifier for each signal transmission point in the CoMP; combine the resource configuration mo...

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Abstract

The invention discloses a channel measuring method for a LTE (Long Term Evolution) system. The method is suitable for a CoMP working mode and comprises the following steps that: a base station marks off a reference mark placement region in a PDSCH (Physical Downlink Shared Channel), sets a plurality of reference marks in the reference mark placement region and sets a resource configuration mode with an identifier for each signal launching point in the CoMP; a terminal carries out channel measurement on each signal launching point according to the resource configuration modes and position information of the reference mark placement region, which re sent by the base station; the terminal feeds back the identifiers of the selected resource configuration modes which meet preset conditions to the base station; and the base station searches the corresponding signal launching points according to the identifier of the resource configuration modes, which are fed back by the terminal, and carries out channel measurement on the signal launching points by using CSI-RS (Channel State Indication Reference Signal) resources. According to the method provided by the invention, the problem of CSI-RS resource tension in the existing CoMP mode can be solved and the resource utilization rate of the PDSCH is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an LTE system channel measurement method. Background technique [0002] The Long Term Evolution (LTE, Long Term Evolution) project is an evolution of 3G, which improves and enhances the air access technology of 3G. Using OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Out-put) as the only standards for its wireless network evolution. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 100Mbit / s and uplink 50Mbit / s. It improves the performance of cell edge users, increases cell capacity, and reduces system delay. [0003] In Rel 11, coordinated multi-point (CoMP, Coordinated multi-point) is a MIMO technology, through the cooperation of multiple signal transmission points, the original interference signal is changed into a signal that can help improve performance. [0004] As a branch of MIMO technology, CoMP has simi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00H04W72/04
Inventor 仲川刘红梅商志平赵训威常永宏
Owner 沈阳市联盛科技有限公司
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