Bluetooth packet loss data receiving and transmitting method, circuit, audio playing equipment and system

Abstract

The invention discloses a Bluetooth packet loss data receiving and transmitting method, a circuit, audio playing equipment and a system. The method comprises the steps of: step S100, receiving a forwarding request sent by second audio playing equipment in a receiving state; step S200, monitoring retransmission information of a current audio data packet retransmitted by sound source equipment on a first link according to the forwarding request; step S300, judging whether retransmission information is monitored or not; step S400, switching the receiving state into a transmtting state; and step S500, forwarding the current audio data to the second audio playing equipment through a second link according to a time sequence of retransmission of the current audio data by the sound source equipment. According to the Bluetooth packet loss data receiving and transmitting method, signals can be provided for the second audio playing equipment from different positions, that is, under the condition of packet loss error correction, the second audio playing equipment can obtain better space diversity gain, and on the premise that deep fading signals caused by a human body exist, the data receiving mode is improved, and the data error correction rate is increased.

Description

technical field [0001] The invention relates to the technical field of audio communication, in particular to a Bluetooth packet loss data sending and receiving method, circuit, audio playback device and system. Background technique [0002] True Wireless Stereo (TWS) is very popular these days. This is because TWS realizes wireless transmission between two earphones and mobile phones, which brings great convenience to consumers. [0003] When one party of TWS fails to receive the audio data packet sent by the mobile phone, the other party successfully receives the audio data packet sent by the mobile phone. In one solution, the successful party becomes the forwarding party in the subsequent time slots, and the unsuccessful party becomes the forwarded party in the subsequent time slots, receiving the audio data forwarded by the forwarding party, so as to correct the audio data packets that failed to receive . In another solution, once one party loses the audio data packet,...

AI Technical Summary

Problems solved by technology

Therefore, whether it is to use the forwarding method of one earphone to correct the error, or the mobile phone retransmission method to correct the error, it cannot overcome the serious threat of deep fading caused by the human body to the stability of TWS in the wireless environment.

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