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Data transmission method and device

A data transmission method and a technology of a data transmission device, which are applied in the field of data communication and can solve problems such as low flexibility and reduced channel transmission efficiency

Active Publication Date: 2017-08-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this solution is that the flexibility is not high, and for the scenario where the station sends short frames, forcing RTS to be enabled will cause certain overhead and reduce channel transmission efficiency

Method used

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  • Data transmission method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0178] In the embodiment of the present invention, the first station is an AP, and the second station is a non-AP STA (abbreviated as STA) associated with the AP as an example for illustration. The AP sends the threshold parameter set to the STA associated with itself in the system message Beacon frame or the Probe Response frame sent by the AP.

[0179] In the embodiment of the present invention, the threshold parameter set includes the corresponding relationship between the area information and the threshold value. It should be noted that the unit of the threshold value may be represented by byte, or may be represented by transmission time length. Before step 110, the AP sets the corresponding relationship between the area information and the threshold value. In this embodiment, the area information refers to the sector to which the STA belongs. Such as Figure 3A shown. How to divide the sectors belongs to the prior art. Generally, for a BSS, the AP can divide the BSS i...

Embodiment 2

[0188] Such as Figure 3B shown. In the embodiment of the present invention, the threshold parameter set sent by the AP includes the corresponding relationship between the area information and the threshold value. In this embodiment, the area information may be set as radio signal measurement parameters of the STA.

[0189] In step 120, the second station obtains the corresponding threshold value of the station according to the threshold parameter set, including: according to the radio signal measurement parameters of the station and the corresponding relationship between the radio signal measurement parameters and the threshold value, obtaining the threshold value of the station corresponding threshold value.

[0190] STA's wireless signal measurement parameters can be: STA's received power, STA's received signal strength indicator (RSSI), STA's packet error rate within a certain period of time, or take AP's transmit power, STA's RSSI and transmit power as parameters funct...

Embodiment 3

[0203] Such as Figure 3C shown. In this example, the area information is an area determined jointly by the sector and the radio signal measurement parameters, and the station determines its corresponding threshold value through the sector where it is located and the radio signal measurement parameters.

[0204] Refer to Table 4, which is an exemplary parameter table of the corresponding relationship between the sector, the radio signal measurement parameter and the threshold value.

[0205]

[0206]

[0207] Table 3 is a parameter table of the corresponding relationship between sector, wireless signal measurement parameter and threshold value

[0208] In the case that the area information includes the sector where the station is located and the radio signal measurement parameters, the obtaining the threshold value corresponding to the station according to the threshold parameter set includes: measuring the sector and the radio signal corresponding to the station param...

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PUM

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Abstract

The invention discloses a data transmission method and device. The method comprises the steps that a first station sends a threshold parameter set to a second station, wherein the threshold parameter set carries related information for informing the second station of sending a channel appointment request frame; the first station receives the channel appointment request frame sent by the second station; the first station sends a response frame corresponding to the channel appointment request frame to the second station; and the first station receives a data frame sent by the second station. Through application of the scheme, the first station can flexibly control the station to start RTS protection or not and flexibly set an RTS threshold according to channel busy or idle condition and channel quality, and on the premise of ensuring certain communication efficiency, a collision is effectively avoided.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a data transmission method and device. Background technique [0002] Currently, as more and more people use the WLAN for data communication, the load on the WLAN network is increasing. Especially in dense deployment scenarios, as the number of access points (AP for short) and the number of non-AP Stations (non-AP STA for short) increase, basic service set overlap (Overlap Basic service set, OBSS for short) situation is serious, the interference situation is complicated, and the efficiency of the WLAN network will show a trend of obvious decline. [0003] An unavoidable problem in WLAN networks is hidden stations. Such as Figure 1A shown. Station A sends data to station B, and station C also sends data to station B at the same time. Since C and A are both outside the coverage of each other, sending A and C at the same time will cause conflicts, and B cannot receive data corre...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W84/12H04W72/04
CPCH04W72/0446H04W74/0816H04W84/12H04W72/20H04W72/04H04W74/08
Inventor 李楠吕开颖邢卫民韩志强孙波
Owner ZTE CORP
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