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A method for sending uplink and downlink data

A data sending method and data frame technology, applied in wireless communication, synchronization devices, electrical components, etc., can solve the problem that data cannot reach AP synchronously

Active Publication Date: 2019-11-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for sending uplink and downlink data, which is used to solve the technical problem that the data sent by multiple STAs in the Wi-Fi system cannot reach the AP synchronously in the prior art

Method used

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  • A method for sending uplink and downlink data
  • A method for sending uplink and downlink data
  • A method for sending uplink and downlink data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] This embodiment provides a method (applied to the STA side) for sending uplink data, such as figure 2 shown, including:

[0101] Step S101: the first STA in the BSS obtains and receives the first guard time sent by the AP in the BSS;

[0102] Step S102: the first STA determines the first preparatory sending time for sending the first data frame;

[0103] Step S103: The first STA delays the first guard time after the first pre-transmission moment, and sends the first data frame to the AP, so that the AP receives the second STA in the BSS based on the second guard time sent by the AP. At the same time as the second data frame, the first data frame can be received.

[0104] For example, when the first guard time is the difference between the RTD of the STA with the longest Round Trip Delay (RTD) among the STAs currently scheduled by the AP and the RTD of the first STA, as Figure 4 Shown:

[0105] First, the AP sends a scheduling frame to the first STA and the second ...

Embodiment 2

[0134] Based on the same inventive concept, this embodiment provides a downlink data sending method (applied to the AP side), such as image 3 shown, including:

[0135] Step S201: the access point AP in the BSS calculates the first guard time corresponding to the first STA in the BSS, and the second guard time corresponding to the second STA in the BSS;

[0136] Step S202: The AP transmits the first guard time to the first STA, and transmits the second guard time to the second STA;

[0137] Step S203: At the same moment, the AP receives the first data frame sent by the first STA based on the first guard time, and receives the second data frame sent by the second STA based on the second guard time.

[0138] Optionally, in this embodiment, the first guard time is the difference between the RTD of the STA with the longest RTD in the BSS and the RTD of the first STA, and the second guard time is the difference between the RTD of the STA with the longest RTD in the BSS and the RT...

Embodiment 3

[0149] Based on the same inventive concept, this embodiment provides a first station STA, such as Image 6 shown, including:

[0150] The receiving unit 301 is configured to receive the first protection time sent by the access point AP in the basic service set BSS;

[0151] A determining unit 302, configured to determine a first preparatory sending time for sending the first data frame;

[0152] Delay sending unit 303, configured to obtain the first guard time from the receiving unit, and obtain the first preparatory sending time from the determining unit, and delay the first guard time after the first preparatory sending time, and send the first data frame to the AP, to The AP is enabled to receive the first data frame while receiving the second data frame sent by the second STA in the BSS based on the second guard time sent by the AP.

[0153] Optionally, in this embodiment, the first guard time is the difference between the RTD of the STA with the longest round-trip delay...

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Abstract

The present invention relates to the technical field of wireless communication, particularly to an uplink data transmission method, the method comprising: a first station (STA) in a BSS receives a first protection time transmitted by an access point (AP) in the BSS; the first STA determines a first ready-to-transmit time for transmitting a first data frame; and the first STA delays a first protection time after the first ready-to-transmit time, and transmits the first data frame to the AP, so that the AP receives the first data frame while receiving a second data frame transmitted by a second STA in the BSS based on the second protection time transmitted by the AP. Also provided is a downlink data transmission method.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for sending uplink and downlink data. Background technique [0002] In order to meet the increasing application requirements of users, wireless LAN standards have evolved rapidly in the past few years, from Institute of Electrical and Electronics Engineers (IEEE) 802.11a / b / g to IEEE 802.11n, and then to IEEE 802.11ac. In order to further improve throughput, the IEEE802.11 working group established the High Efficiency WLAN Study Group (HEW SG) in 2013, preparing to introduce Orthogonal Frequency Division Multiple Access (OFDMA), scheduling Wait for new technology. [0003] In the existing wireless fidelity (Wireless Fidelity, Wi-Fi) system, including a high throughput (High Throughput, HT) system based on IEEE802.11n and a very high throughput (Very HighThroughput, VHT) system based on IEEE802.11ac System, etc., the uplink data transmission is point-to-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/003
Inventor 刘亚林彼得·禄马驰翔
Owner HUAWEI TECH CO LTD