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Method and device for data retransmission

A data retransmission and data technology, applied in the communication field, can solve the problems of increasing network signaling load and data transmission interference, and achieve the effects of reducing data transmission interference, reducing retransmission, and reducing network signaling load.

Inactive Publication Date: 2013-11-20
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] However, the retransmission mechanism under the existing SDMA technology is that when the AP receives the data transmission error information fed back by the station with better communication quality among the stations it serves, the AP will retransmit the data to all the stations it serves, which will easily lead to Data transmission interference, and increased network signaling load

Method used

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  • Method and device for data retransmission
  • Method and device for data retransmission

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Embodiment Construction

[0047] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0048] figure 1 It is a schematic flowchart of Embodiment 1 of the data retransmission method of the present invention, such as figure 1 As shown, the executor of this embodiment is an access point (Access Point, hereinafter referred to as AP) device, and the steps of this embodiment include:

[0049] S101: Use SDMA technology to send d...

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Abstract

The invention provides a method and a device for data retransmission in an embodiment. Data is transmitted to at least two stations through access point equipment by adopting the SDMA (space division multiple address) technology; feedback information transmitted by the at least two stations is received; and whether data of each of the stations is retransmitted or not is determined according to the feedback information of each of the stations. Whether the data of each of the stations is retransmitted or not is determined according to the feedback information of each of the stations independently without relying on other stations, so that unnecessary retransmission can be reduced, interferences of data transmission are decreased, and the network signalling load is reduced.

Description

Technical field [0001] The embodiments of the present invention relate to communication technology, and in particular to a data retransmission method and device. Background technique [0002] Multi-user multiple-input multiple-output (Multiple-user Multiple-input Multiple-output, hereinafter referred to as: MU-MIMO) or Space Division Multiple Access (hereinafter referred to as: SDMA) technology can improve The advantages of system throughput and spectrum utilization have been widely used. [0003] The core of SDMA technology is the application of smart antennas. Ideally, it requires the antenna of the network device to assign a spot beam to each site served by the network device. Taking an access point (Access Point, hereinafter referred to as: AP) for example, the AP can distinguish the wireless signals of each site according to the spatial location of the site. In other words, stations in different locations can use the same frequency and the same pattern at the same time with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
Inventor 谢春辉胡慧周元
Owner HUAWEI TECH CO LTD
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