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Data transmission method, sending terminal, reception terminal and data transmission system

A data transmission method and technology for sending terminals, which are applied in the fields of data transmission methods, sending terminals, receiving terminals and data transmission systems, and can solve the problems of unsatisfied anti-interference performance of data transmission, unguaranteed real-time performance of data transmission, and inability to Send data and other issues to achieve the effect of ensuring real-time performance and anti-interference performance

Inactive Publication Date: 2016-08-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The data transmission scheme using the above mechanism has the following deficiencies: 1) When the carrier sense detects that the channel is busy, it needs to wait for a delay, and the real-time performance of data transmission cannot be guaranteed; 2) if the channel sensed by the carrier is always If there is an interference signal, the data cannot be sent all the time, so the anti-interference performance of data transmission cannot be satisfied

Method used

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  • Data transmission method, sending terminal, reception terminal and data transmission system
  • Data transmission method, sending terminal, reception terminal and data transmission system
  • Data transmission method, sending terminal, reception terminal and data transmission system

Examples

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Embodiment 1

[0049] Embodiment 1 of the present invention discloses a data transmission method applicable to a sending terminal, refer to figure 1 The flow chart of the data transmission method is shown, and the method may include the following steps;

[0050] S101: When a data transmission instruction is received, determine a first channel from more than one predetermined standby channels as a current channel in a preset manner.

[0051] S102: Send a data transmission request to a receiving terminal by using the current channel.

[0052] Different from the carrier sense of the prior art, the present application provides an anti-collision mechanism based on channel frequency hopping of multiple spare channels. Based on this, this embodiment pre-sets N for data transmission by the sending terminal and the receiving terminal. standby channels, wherein the N is a natural number greater than 1.

[0053] When the sending terminal receives a data transmission instruction (triggered by the user...

Embodiment 2

[0068] Embodiment 2 of the present invention discloses a data transmission method suitable for a receiving terminal, refer to figure 2 The flow chart of the data transmission method is shown, and the method may include the following steps;

[0069] S201: Determine the third channel as the current channel from more than one predetermined standby channels in a preset manner;

[0070] S202: Determine whether a data transmission request from the sending terminal is received from the current channel within a second preset time period;

[0071] S203: If yes, use the current channel to perform preset data transmission processing;

[0072] S204: If not, use the preset method to determine the fourth channel from the standby channels as the current channel, and return to perform the step of: judging whether a message from the current channel is received within the second preset duration Sending a terminal data transmission request; performing preset processing until the second preset...

Embodiment 3

[0080] This embodiment discloses a sending terminal, refer to image 3 A schematic structural diagram of the sending terminal shown, the sending terminal includes:

[0081] The first determining module 301 is configured to determine the first channel as the current channel from more than one predetermined standby channels in a preset manner when receiving the data transmission instruction;

[0082] A request sending module 302, configured to use the current channel to send a data transmission request to the receiving terminal;

[0083] A first judging module 303, configured to judge whether receiving terminal response information from the current channel is received within a first preset time period;

[0084] A data sending module 304, configured to use the current channel as the target channel to send target data to the receiving terminal when the first judgment module is YES;

[0085] The first control module 305 is configured to determine the second channel from the stand...

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Abstract

The invention discloses a data transmission method, a sending terminal, a reception terminal and a data transmission system. The method includes setting a plurality of standby channels in advance, sending a data transmission request to the reception terminal directly using a determined current channel when the sending terminal has data transmission demand, using the channel for data transmission when there is response, switching to another standby channel to execute the previous steps when there is no response until preset condition (an available channel is determined, data transmission is completed or processing is overtime) is met. A data transmission request is sent directly to a current channel when data transmission demand exists, and no carrier sensing before data transmission is needed. When the current channel is busy or has interference, time-delay waiting is not necessarily, and another available channel is determined from other standby channels to transmit data. Real-time and anti-interference performance of data transmission is effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a data transmission method, a sending terminal, a receiving terminal and a data transmission system. Background technique [0002] At present, RF (Radio Frequency, radio frequency) communication adopts CS (Carrier Sense, carrier sense) anti-collision mechanism for data transmission. Using this mechanism, before sending signals, RF network equipment firstly senses whether the current channel is busy with the carrier. , then send again after delaying the agreed time period. [0003] The data transmission scheme using the above mechanism has the following deficiencies: 1) When the carrier sense detects that the channel is busy, it needs to wait for a delay, and the real-time performance of data transmission cannot be guaranteed; 2) if the channel sensed by the carrier is always If there is an interference signal, the data cannot be sent all the time, so t...

Claims

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Application Information

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IPC IPC(8): H04W74/08
CPCH04W74/0858
Inventor 黄晏吴士鹏温东彪洪忠玮
Owner GREE ELECTRIC APPLIANCES INC
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