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Signal channel detection method for long-term evolution system

A channel detection and data channel technology, applied in the field of communication, can solve the problem that the common pilot cannot detect the data channel, and achieve the effect of reducing the overhead of the common pilot, improving the communication quality, and supporting handover.

Inactive Publication Date: 2009-05-13
ZTE CORP
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Problems solved by technology

[0009] In order to solve the problem that the common pilot in the existing LTE system cannot complete the data channel detection when beamforming is used, the present invention provides a channel detection method used in the long-term evolution system

Method used

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  • Signal channel detection method for long-term evolution system
  • Signal channel detection method for long-term evolution system
  • Signal channel detection method for long-term evolution system

Examples

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] refer to figure 1 , illustrating a channel detection method according to an embodiment of the present invention. Such as figure 1 As shown, the method includes the following steps: S102, the base station selects the beamforming mode as the multi-antenna processing mode of the data channel according to the channel quality information fed back by the user equipment; S104, the base station adds a dedicated pilot to the data channel, and the dedicated pilot performing beamforming processing with the data in the data channel, and adding one or two common pilots to the beamforming processing result and sending it to the user equipment; and S106, the user equipment uses the common pilot to perform omnidirectional channel estimation, and the omnidirectional The channel estimation result is used for the detection of the common con...

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Abstract

The invention discloses a method for channel detection used for a long-term evolution system which comprises S102, a base station selects a wave beam formation mode as a multi-antenna treatment mode for a data channel according to channel quality information fed back by user equipment; S104, the base station adds a special pilot in the data channel, carries out wave beam formation treatment on the pilot and data in the data channel, and adds one way or two way common pilot in a wave beam formation treatment result to send to the user equipment; and S106, the user equipment utilizes the commonpilot to estimate channel in an omnidirectional way, the result of omnidirectional channel estimation is used for detecting a common control channel, the special pilot is extracted from the omnidirectional channel estimation result to estimate wave beam channel, and a wave beam channel estimation result is used for detecting the data channel.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a channel detection method used in a long-term evolution system. Background technique [0002] Beamforming can increase cell coverage, improve the link performance of cell edge users, and can achieve spatial interference cancellation and increase system capacity. It is the main MIMO (Long Term Evolution, LTE) wireless communication system. MultiInput MultiOutput, MIMO for short) one of the ways. [0003] In the LTE system, the common pilot is inserted into the transmitted signal after multi-antenna technology processing, and can only be used for channel estimation of the omnidirectional channel from the base station (BS) to the user equipment, but not for estimating beamforming the subsequent directional channel. The transmission weight of the beamforming cannot be estimated according to the common pilot, so the decoding of the user equipment after the beamform...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B1/707H04B17/00H04W24/00
Inventor 姜静王衍文于辉
Owner ZTE CORP
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