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Data transmission method and device thereof

A data transmission method and a technology of a data transmission device, which are applied in transmission systems, transmission noise suppression, electrical components, etc., can solve problems such as overlapping and invalid data, and achieve the effect of avoiding mutual interference

Active Publication Date: 2010-08-25
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the working frequency bands of Bluetooth and Wi-Fi are similar, when the distance between STA-1 and STA-2 is very close and within the interference range, when STA-1 transmits data through Bluetooth, if STA-2 transmits data through Wi-Fi at the same time , the wireless signal of STA-2 will overlap with the wireless signal of STA-1, causing the data received by the receiver to be invalid

Method used

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  • Data transmission method and device thereof
  • Data transmission method and device thereof
  • Data transmission method and device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] As shown in Figure 2, an embodiment of the present invention provides a data transmission method, including:

[0030] 21. Set a PCF (Point Coordination Function, Point Coordination Function) superframe including a contention-free period and a contention period.

[0031] 22. Send Bluetooth data in the contention-free period of the PCF superframe.

[0032] The execution subject of the data transmission method in the embodiment of the present invention may be a terminal integrating a Bluetooth function and a Wi-Fi function, such as a terminal including a Wi-Fi module and a Bluetooth BT module. For a wireless local area network, a terminal may also be understood as a station (station, STA).

[0033] PCF is a protocol formulated in IEEE-802.11 to resolve data collisions between stations. In the PCF protocol, the time domain is divided into a PCF superframe format, and the PCF superframe is composed of CFP (Contention FreePeriod, contention-free period) and CP (Contention P...

Embodiment 2

[0054] As shown in FIG. 4, corresponding to the data transmission method of the foregoing embodiment, an embodiment of the present invention provides a data transmission device, including:

[0055] The Wi-Fi module 41 is configured to set a PCF superframe including a contention-free period and a contention period.

[0056] The BT module 42 is configured to send Bluetooth data in the contention-free period of the PCF superframe.

[0057] Optionally, the Wi-Fi module 41 may include:

[0058] Construct sub-modules for constructing Beacon frame at the beginning of the contention-free period, data transmission time slot of the contention-free period, CF-End frame at the end of the contention-free period, short frame interval SIFS in the contention-free period, The time slot of the contention period, and the PCF frame interval PIFS between PCF superframes.

[0059] The setting sub-module is used to set the data sending time slot of the contention-free period to be equal to the tim...

Embodiment 3

[0068] As shown in FIG. 5, corresponding to the data transmission method in the first embodiment above, this embodiment of the present invention provides a data transmission method, including:

[0069] 51. Determine to enter the contention-free period of the PCF (Point Coordination Function, point coordination function) superframe, and not send Wi-Fi data in the contention-free period of the PCF superframe.

[0070] 52. Determine to enter the contention period of the PCF superframe, and send Wi-Fi data within the contention period of the PCF superframe.

[0071] The execution subject of the data transmission method in the embodiment of the present invention may be a terminal with a Wi-Fi function, such as a terminal including a Wi-Fi module. For a wireless local area network, a terminal may also be understood as a station (station, STA).

[0072] The determination of entering the contention-free period of the PCF superframe in the above step 51 may include: receiving the Beac...

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Abstract

The embodiment of the invention relates to a data transmission method and a device thereof. The data transmission method comprises the following steps: constructing a point coordination function PCF superframe comprising a competition-free period and a competition period; and transmitting Bluetooth data in the competition-free period of the PCF superframe. The data transmission method and the device thereof realize Bluetooth data transmission in the competition-free period, and avoid mutual interference of transmitted between Wi-Fi data and Bluetooth data.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] Both BT (Blue Tooth, Bluetooth) and Wi-Fi (Wireless Fidelity, wireless fidelity) are wireless transmission technologies that work near the 2.4GHz ISM (Industrial Scientific Medical, industrial, scientific and medical) frequency band. The main application scenario of Bluetooth is to transmit voice data, while the main application scenario of Wi-Fi is to surf the Internet. BT and Wi-Fi are widely used in mobile terminals, and the trend of the same mobile terminal having a Bluetooth function and a Wi-Fi function is gradually expanding. [0003] As shown in FIG. 1 , STA-1 is a mobile terminal with Bluetooth and Wi-Fi functions, and STA-2 is a mobile terminal with Wi-Fi functions or a mobile terminal with Bluetooth and Wi-Fi functions. Since the working frequency bands of Bluetooth and Wi-Fi are simi...

Claims

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Application Information

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IPC IPC(8): H04B15/00
Inventor 刘善平
Owner HUAWEI DEVICE CO LTD
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