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Self-adaptive antenna mode control method and device thereof

An antenna mode and self-adaptive technology, applied in digital transmission systems, data exchange networks, error prevention, etc., to achieve the effect of reducing system overhead, small resource overhead, and excellent throughput performance

Inactive Publication Date: 2009-09-16
冯丽红
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide an adaptive antenna mode control method and device to solve the technical problem that the prior art cannot adaptively select the antenna mode according to the capabilities of the base station and user equipment and according to the actual channel conditions

Method used

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  • Self-adaptive antenna mode control method and device thereof

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The invention mainly includes: an outer loop control process and an inner loop control process. The outer loop control is to count the ACK / NACK information continuously reported by the UT (User Terminal, user terminal), and compare the information with the target value, so as to switch and select the MIMO mode. The outer loop control is used for a long period of time The antenna mode in the stable channel is hard switched. In the inner loop control, the UT reports the CQI feedback information of different streams (in diversity mode, it can be regarded as a special multi-stream). ) under the AVI (Assured Value Interface) table, combined with the back-off algorithm in the multi-path channel environment to perform a certain back-off process on ...

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Abstract

The invention provides a self-adaptive antenna mode control method and a device thereof. The method is characterized by comprising an external ring control process and an internal ring control process. The external ring control process comprises the steps of: setting an aggregate value threshold and a successive value threshold and judging whether the aggregate statistic value of confirmation or denial information is larger than the aggregate value threshold, if so, directly switching the antenna mode; if not, judging whether the successive statistic value of the confirmation or denial information is larger than the successive value threshold, if so, entering the internal ring control process, and if not, keeping the current antenna mode. The internal ring control process comprises the steps of: carrying out return treatment under a plurality of antennas according to channel quality instructions fed back by different user terminals and an interface table of link layer simulated true values, and determining the antenna mode and a code modulation mode selected by the target user terminal according to the rule of throughput maximization. The invention effectively solves self adaptiveselection problem of different antenna modes in an MIMO system and can obtain optimum system performance.

Description

technical field [0001] The invention relates to an adaptive control method of an antenna mode in a multi-antenna system, in particular to an adaptive antenna mode control method and device in an orthogonal frequency division multiplexing and multiple-input multiple-output system. Background technique [0002] The combination of MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) and OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology can significantly improve the link quality of the wireless communication system and increase the transmission rate of wireless data. Therefore, This technology has also become the main technology used in the 4G (fourth generation mobile communication) system. [0003] Based on transmission architecture considerations, MIMO technology mainly includes three antenna modes: Spatial Multiplexing (SM, Spatial Multiple), Transmit Diversity (TD, Transmission Division) and Beam Formin...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L12/56H04L1/00H04L1/16H04L27/26
Inventor 周晓东
Owner 冯丽红
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