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Uplink MIMO (multiple-input multiple-output) adaption method and device

An adaptive, line data technology, applied in the field of communication, can solve the problem of unoptimized utilization of resources, and achieve the effect of improving system uplink throughput and ensuring link reliability

Active Publication Date: 2012-05-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention provides an uplink MIMO self-adaptive method and device, which are used to solve the problem of using any non-MIMO mode or MIMO mode alone for data transmission in the prior art that cannot optimize the resources in the system, and provide flexible data for users. The problem with the transmission method

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  • Uplink MIMO (multiple-input multiple-output) adaption method and device

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Embodiment Construction

[0032] An embodiment of the present invention provides an uplink MIMO adaptive method, including: the terminal determines that the current uplink data transmission mode is one of non-MIMO mode, virtual MIMO mode, space-time coding STC mode or spatial multiplexing SM mode If the current uplink data transmission mode is non-MIMO mode, it is detected whether the current time period reaches the preset first transmission mode switching period, and if so, according to the packet error rate P in the period, the total packet The number N_Total and the uplink congestion coefficient switch the transmission mode of the uplink data to the virtual MIMO mode or the space-time coding STC mode; if the current uplink data transmission mode is the virtual MIMO mode, check whether the current time period reaches the preset second transmission mode Switch the period, if yes, perform pair disassembly processing according to the packet error rate P and the total number of packets N_Total in the peri...

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Abstract

The invention discloses an uplink MIMO (multiple-input multiple-output) adaption method and device used in the technical field of communication. The uplink MIMO adaption method comprises the following steps: judging the current uplink data transmission mode, and carrying out uplink data transmission according to the packet error rate P, the total packet number N_Total, the uplink congestion coefficient and the channel correlation by adopting the optimal mode in the non-MIMO mode, the virtual MIMO mode, the STC (space time coding) mode or the SM (spacial multiplexing) mode. Due to the adoption of the uplink MIMO adaption method and device, the problems in the prior art that the resource in a system can not be used optimally when only the non-MIMO mode or the virtual MIMO mode is used for carrying out data transmission and the flexible data transmission mode can not be provided for the user are solved. According to the uplink MIMO adaption method and device, the data transmission mode can be selected in an adaptive way according to the packet error rate, the uplink congestion coefficient, the channel correlation and the like, and the uplink throughput of the system can be improved on the basis of guaranteeing the reliability of a link.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to an uplink MIMO adaptive method and device. Background technique [0002] MIMO is one of the key technologies of the physical layer in an OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) system. In the MIMO system, the signal source S(k) is transmitted by multiple antennas after space-time encoding, and then received by multiple antennas at the receiving end through a wireless channel, and the original signal is restored after space-time decoding at the receiving end. [0003] The central idea of ​​MIMO is to use multiple antennas to suppress channel fading. The implementation method is to optimize the multi-path antenna channel, transmission and reception as a whole, so as to achieve high communication capacity and spectrum utilization rate, which is a near-optimal space-time-domain joint diversity and interfer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00
CPCH04L1/203H04L1/0015H04L1/06
Inventor 赖世明
Owner ZTE CORP