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Training sequence transmission method and device

A technology of training sequence and transmission method, which is applied in the direction of transmission system, digital transmission system, and multiple use of transmission paths, etc., and can solve the problems of increased overhead, large air interface overhead, and many signaling interactions

Pending Publication Date: 2020-10-16
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the above scheme are: there are many signaling interactions in this scheme, and the overhead of the air interface is large, and with the increase of the number of APs or the number of STAs, the overhead increases greatly

Method used

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  • Training sequence transmission method and device
  • Training sequence transmission method and device
  • Training sequence transmission method and device

Examples

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Effect test

example 2

[0219] Example 2: Newly design a trigger frame.

[0220] In the second example, the trigger frame may also be called a self-delay trigger frame (self-delay sounding, SDS) frame.

[0221] Such as Figure 11 As shown, it is a frame format of an SDS frame provided by this application, and the SDS frame is a newly added frame type. The frame only needs to have the MAC frame header, the AP information field (AP Info) and the user information field (User Info). Other fields are not limited. You can also add AP Info and User Info in the control frame, not specifically which control frame.

[0222] next to Figure 11 The fields of the SDS frame shown are described introductoryly.

[0223] For frame control, you can choose one that is not used, and do not limit a certain field.

[0224] Duration, is the duration of a frame.

[0225] BA is the broadcast address, that is, this frame can be directed to all wireless devices that can hear the frame.

[0226] MTA is the address that s...

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Abstract

The invention provides a training sequence transmission method and device. The method comprises the steps that a first AP broadcasts and sends a trigger frame, wherein the trigger frame indicates thetime sequence that N STAs send channel measurement frames separately, and N is an integer larger than 1; and the first AP receives the channel measurement frames sent by N the STAs in sequence, wherein one channel measurement frame comprises one or more training sequences. According to the scheme, only one trigger frame needs to be sent to trigger the N STAs to report the channel measurement frames to the M + 1 channel measurement frames separately; in the prior art, each AP needs to send a channel training request to each STA , namely N * (M + 1) channel training requests are sent in total totrigger each STA to report the training sequence . Therefore, according to the scheme, the signaling overhead can be remarkably saved.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a method and device for transmitting a training sequence. Background technique [0002] The Institute of Electrical and Electronics Engineers (IEEE) 802.11n standard, including the subsequent 802.11ac and 802.11ax standards, introduces Multiple Input Multiple Output (MIMO) technology at the physical layer, using space division multiplexing The system capacity is doubled and the performance is greatly improved. MIMO technology refers to configuring multiple antennas at the sending end (such as an Access Point (AP)) and the receiving end (such as a station (STA)) at the same time, and signals are sent and received through different antennas. On the premise of increasing frequency resources and antenna transmission power, the system channel capacity is doubled by using the spatial multiplexing gain. The MIMO system can use precoding technology to effecti...

Claims

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Application Information

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IPC IPC(8): H04L25/02H04W24/08
CPCH04L25/024H04W24/08H04L25/0224H04L5/0053H04L5/0048H04L5/0035H04L5/0094H04L5/0078H04L25/03006H04L2025/0377H04L2025/03815
Inventor 袁方超杨博胡寅亮
Owner HUAWEI TECH CO LTD