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Bluetooth audio master equipment, Bluetooth audio slave equipment, Bluetooth communication method and Bluetooth communication system

A Bluetooth communication and master device technology, applied in transmission systems, wireless communication, digital transmission systems, etc., can solve the problems affecting the communication efficiency of Bluetooth audio slave devices of audio source devices, large delay in audio message playback, and large forwarding and interactive communication volume, etc. The problem is to avoid the increase of traffic, reduce the unavailable time period, and reduce the communication delay.

Active Publication Date: 2021-08-03
南京西觉硕信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For the Bluetooth audio slave device, since the audio message has gone through the above-mentioned HCI buffer queue and the cache unit after decoding the upper layer protocol twice, there is a large delay in the entire audio message transmission process, resulting in a delay in the playback of the audio message It is relatively large, and the slave device will send a forwarding request every time it finds a packet loss, so that the communication traffic of forwarding interaction is relatively large, which greatly affects the communication efficiency between the audio source device, the Bluetooth audio master device and the Bluetooth audio slave device

Method used

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  • Bluetooth audio master equipment, Bluetooth audio slave equipment, Bluetooth communication method and Bluetooth communication system
  • Bluetooth audio master equipment, Bluetooth audio slave equipment, Bluetooth communication method and Bluetooth communication system
  • Bluetooth audio master equipment, Bluetooth audio slave equipment, Bluetooth communication method and Bluetooth communication system

Examples

Experimental program
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Embodiment 1

[0106] This embodiment is a bluetooth communication method, which has a reciprocating first working cycle and a second working cycle: the master-slave device works in the first working cycle T1 in the piconet 1, and works in the second working cycle T2 in the piconet 2 , the master device and the slave device switch from piconet 1 to piconet 2 every time they execute the first working clock cycle T1 of piconet 1; 2 switches to piconet 1. The master device switches between piconet 1 and piconet 2 alternately, and the slave device also switches between piconet 1 and piconet 2 alternately. Both the master device and the slave device preset the same reference clock, such as taking the clock information of piconet 1 or piconet 2 as the reference clock, and using the reference clock to time the switching of the first working cycle and the second working cycle At the time point, ensure that the master device and the slave device switch the piconet synchronously. In the initial stat...

Embodiment 2

[0169] This embodiment is a bluetooth communication method, which is generally the same as Embodiment 1, the main difference lies in the way in which the slave device extends the working time of the second working cycle, specifically as Figure 4 The signaling diagram shows:

[0170] S201: The master device receives an audio message from the audio source device;

[0171] S202: The slave device monitors and receives the audio message from the audio source device;

[0172] S203: The master device parses the received audio message based on the predetermined message structure information, and obtains the serial number of the audio message;

[0173] S204. The slave device counts the loss of the audio message received in T1;

[0174] S205, the slave device generates a forwarding request according to the loss of the audio packets it has counted in the first working period, and sends it to the master device based on the piconet 2. The master device receives the forwarding request. ...

Embodiment 3

[0189] This embodiment is a bluetooth communication method, which has a reciprocating first working cycle and a second working cycle in the initial state: the master device works in the first working cycle T1 in the piconet 1, and works in the piconet 2 in the first working cycle T1. In the second working cycle T2, the master device switches from piconet 1 to piconet 2 every time it executes the first working clock cycle T1 of piconet 1; Piconet 2 switches to Piconet 1. The master device alternately switches between piconet 1 and piconet 2 cyclically. The slave device only works on the piconet 2, but it also has a first working cycle and a second working cycle which are switched synchronously with the master device. Both the master device and the slave device preset the same reference clock, such as taking the clock information of piconet 1 or piconet 2 as the reference clock, and using the reference clock to time the switching of the first working cycle and the second workin...

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Abstract

The invention relates to the field of wireless communication, in particular to Bluetooth audio master equipment, Bluetooth audio slave equipment, a Bluetooth communication method and a Bluetooth communication system. The master equipment has a first work period and a second work period which are synchronously switched with the slave equipment, and in the first work period, the master equipment receives an audio message from the sound source equipment; and in the second work period, the master equipment receives a forwarding request which is sent by the slave equipment and is generated according to the loss condition of the audio message counted in the first work period, determines the audio message to be forwarded based on the forwarding request, and forwards the audio message to be forwarded to the slave equipment. According to the Bluetooth audio master equipment, the Bluetooth audio slave equipment, the Bluetooth communication method and the Bluetooth communication system, the main equipment can acquire the actual packet loss condition according to the forwarding request in the second work period and complete forwarding of all messages, so that the increase of communication traffic caused by multiple times of initiating the forwarding request is avoided, the unavailable time period is reduced, the time of packet loss forwarding interaction is relatively short, the communication delay is reduced, and therefore, the actual available communication bandwidth is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a bluetooth audio master device, a slave device, a bluetooth communication method and a system. Background technique [0002] At present, Bluetooth audio devices represented by Bluetooth headsets, Bluetooth speakers, and Bluetooth car systems and related Bluetooth audio technologies are changing the way we consume media. [0003] In a stereo bluetooth audio device system that supports spatial distribution, or in a bluetooth headset with separate left and right ears, two or more bluetooth audio devices are required to receive and play audio streams. At this stage, the mainstream Bluetooth audio playback method is mainly the forwarding method or the monitoring method. [0004] The forwarding method can usually only use one of several Bluetooth audio devices as the Bluetooth audio master device (referred to as the master device), and the other or several other Bluetooth audio ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/80H04W40/02H04L12/26
CPCH04W4/80H04W40/02H04L43/0829Y02D30/70
Inventor 高迎宾张亦农袁赟
Owner 南京西觉硕信息科技有限公司
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