Method for sending channel measurement pilot frequency in LTE-A system

A channel measurement pilot, LTE-A technology, applied in transmission systems, channel estimation, baseband system components, etc., can solve problems such as no solution, and achieve the effects of good compatibility, improved performance, and improved throughput

Inactive Publication Date: 2010-09-22
ZTE CORP
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Problems solved by technology

However, how to send CSI-RS in the L

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  • Method for sending channel measurement pilot frequency in LTE-A system
  • Method for sending channel measurement pilot frequency in LTE-A system
  • Method for sending channel measurement pilot frequency in LTE-A system

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[0027] The technical solution of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0028] A method for transmitting channel measurement pilot CSI-RS in the LTE-A system. The CSI-RS of each antenna port currently used is transmitted on the shared resources of LTE and LTE-A users, of which there is at least one antenna The CSI-RS of the port is transmitted according to the common pilot (CRS) transmission method in the existing LTE (Long-Term Evolution) system, except for these antenna ports that transmit CSI-RS according to the CRS transmission method in the LTE system CSI-RS of other antenna ports can be sent on PDSCH (downlink physical shared channel) or PDCCH (downlink physical control channel). Wherein, the number of antenna ports currently used can be 1, 2, 4, 6, or 8.

[0029] In the above method, the network side can transmit the CSI-RS of the antenna port completely according to the CRS transmission m...

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Abstract

The invention discloses a method for sending a channel measurement pilot frequency in an LTE-A system, relating to a radio communication system. In the method, a network side sends the channel measurement pilot frequency CSI-RS of each antenna port used currently on a shared resource of LTE and LTE-A, wherein the CSI-RS of at least one antenna port is sent in a mode of sending a common pilot frequency in an LTE system, while the CSI-RS of other antenna ports are sent on a downlink physical channel. The technical scheme of the invention has little influence on LTE users, can guarantee the property of channel measurement and improve the throughput of the LTE-A system. In addition, the technical scheme of the invention is beneficial for LTE-Advanced users to improve quality of link.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a method for sending channel measurement pilots in an LTE-A (Long-Term Evolution advance) system. Background technique [0002] In order to improve the throughput of the cell and carry out interference coordination between the cells, the new generation of wireless communication systems, such as LTE-A, IMT-Advance (International Mobile Telecommunication advance advanced international wireless communication system), etc., have introduced cooperative transmission technology between network levels ( Coordinate Multipoint Transmission and Reception (hereinafter referred to as COMP). [0003] At present, two kinds of pilots of LTE-Advanced have been defined in the 3GPP LTE56 meeting: channel measurement pilot (hereinafter referred to as CSI-RS) and demodulation pilot (hereinafter referred to as DMRS), among which, it is clear that CSI-RS is cell-specific (cell-specific), and ...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04B17/00
CPCH04L5/0007H04L25/0204H04L5/0053H04W72/085H04W72/542
Inventor 姜静朱常青张峻峰
Owner ZTE CORP
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