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Data transmission method and system

A data transmission method and data technology, applied in the direction of digital transmission system, transmission system, error prevention, etc., can solve problems such as throughput reduction, and achieve the effect of improving throughput and enhancing system performance

Inactive Publication Date: 2012-05-16
ZTE CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a data transmission method and system to solve the problem of reduced throughput during data transmission

Method used

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  • Data transmission method and system

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Embodiment Construction

[0049] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0050] In this embodiment, the AP (Access Point) can perform MU-MIMO pairing for STAs that support MU-MIMO associated with the BSS (Base Station Subsystem) according to the channel state information of the STA (Station). group) to construct a MU-MIMO group, which contains one or more pairs, and each group is assigned a groupID (group identifier).

[0051] When a pair is included in the group, the STA can know the group receiving the MU-MIMO data to be transmitted through the groupID, and the STA in the group can know whether the data contains the data flow of the STA and the number of the included data flow through the flow information.

[0052] When multiple pairs are included in the grou...

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Abstract

The invention discloses a data transmission method and system. The method comprises the following steps of: determining, by an access point, a multi-user multiple input multiple output (MU-MIMO) group of data to be received; acquiring transmission opportunity of transmitting data to the group; and changing the MU-MIMO group of the data to be received to transmit data to the changed group if a site which does not meet receiving conditions exists in the group in the process of acquiring the transmission opportunity. In the invention, data of other sites is transmitted as supplement when the data cannot be transmitted to a part of MU-MIMO sites expected initially; or when a part of users finish transmission in advance in a frame sequence exchange, new data is transferred to improve the throughput and enhance the system performance.

Description

technical field [0001] The invention relates to a wireless local area network, in particular to a data transmission method and system. Background technique [0002] MIMO (Multiple-Input Multiple-Output) system is a technology that uses multiple transmitting antennas and multiple receiving antennas for wireless transmission. It has become a long-term evolution (Long Term Evolution, referred to as LTE) due to its effective increase in channel capacity. A technology that has received much attention in the research. [0003] In a cellular system, the MIMO (MU-MIMO) technology that uses spatial multiplexing technology to achieve multi-user transmission can greatly improve the spectral efficiency of the system. All or part of the data of multiple users uses the same frequency and simultaneously transmits in a space-divided manner. , in the cellular system, according to the scheduling and control channels, the base station can send MU-MIMO data to the determined MU-MIMO paired ter...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
Inventor 李峰田开波姜静孙波李楠吕开颖
Owner ZTE CORP
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