Wireless bluetooth communication mechanism capable of effectively reducing number of audio packet retransmission

• US 10,506,407 B2
• Filed: 05/19/2019
• Issued: 12/10/2019
• Est. Priority Date: 11/09/2017
• Status: Active Grant

• Current Assignee: Airoha Technology Corporation (MediaTek, Inc.)
• Original Assignee: Audiowise Technology Inc.
• Inventors: Sung, Chih-Wei, Liu, Pete Hsinhsiang, Jia, Jing-Syuan, Peng, Wei-Chung, Huang, Kuang-Hu, Chen, Jeng-Hong, Ho, I-Ken, Chen, Wei-Chih, Tseng, De-Hao
• Primary Examiner(s): Sandiford, Devan A
• Application Number:
  US16/416,259
• Publication Number:
  US 20190274024A1
• Time in Patent Office: 205 Days
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04R 1/1091 Details not provided for in groups H04R1/1008 - H04R1/1083
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 3/00 Circuits for transducers , loudspeakers or microphones
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

A method applied into a controller of a wireless Bluetooth device includes: providing a first flag and a second flag; asserting the first flag when the controller successfully receives the particular packet transmitted from the audio gateway; asserting the second flag when the controller successfully receives an acknowledgement from a secondary device wherein a reception of the acknowledgement indicates that the secondary device successfully receives the particular packet; and transmitting an acknowledgement of a particular packet to an audio gateway when the first flag and the second flag are asserted.

Claims

1. A controller of a wireless Bluetooth device, comprising:

a memory, configured for storing a first flag and a second flag; and

a processor, coupled to the memory, configured for transmitting an acknowledgement of a particular packet to an audio gateway when the first flag and the second flag are asserted;

wherein the first flag is asserted by the processor when the processor successfully receives the particular packet transmitted from the audio gateway, and the second flag is asserted by the processor when the processor successfully receives an acknowledgement from a secondary device wherein a reception of the acknowledgement indicates that the secondary device successfully receives the particular packet;

the first flag is asserted by the processor at a first time slot, and the second flag is asserted by the processor at a second time slot which is different from the first time slot;

the second time slot is earlier than the first time slot, and the processor is arranged for transmitting the acknowledgement to the audio gateway at a specific time slot next to the first time slot.

2. A method applied into a controller of a wireless Bluetooth device, comprising:

providing a first flag and a second flag;

asserting the first flag when the controller successfully receives the particular packet transmitted from the audio gateway;

asserting the second flag when the controller successfully receives an acknowledgement from a secondary device wherein a reception of the acknowledgement indicates that the secondary device successfully receives the particular packet; and

transmitting an acknowledgement of a particular packet to an audio gateway when the first flag and the second flag are asserted;

wherein the first flag is asserted at a first time slot, and the second flag is asserted at a second time slot which is different from the first time slot;

the second time slot is earlier than the first time slot, and the transmitting step is performed at a specific time slot next to the first time slot.

3. A wireless Bluetooth device with a multipoint connection function, comprising:

a plurality of controllers, a controller comprising;

a memory, configured for storing a first flag and a second flag; and

a processor, coupled to the memory, capable of transmitting an acknowledgement of a particular packet to an audio gateway when the first flag and the second flag are asserted;

wherein the first flag is asserted by the processor when the processor successfully receives the particular packet transmitted from the audio gateway, and the second flag is asserted by the processor when the processor successfully receives an acknowledgement from a secondary device wherein a reception of the acknowledgement indicates that the secondary device successfully receives the particular packet;

the first flag is asserted by the processor at a first time slot, and the second flag is asserted by the processor at a second time slot which is different from the first time slot;

the second time slot is earlier than the first time slot, and the processor is arranged for transmitting the acknowledgement to the audio gateway at a specific time slot next to the first time slot.

4. A wireless Bluetooth device with a multipoint connection function, comprising:

a plurality of controllers, a controller comprising;

a memory, configured for storing a first flag and a second flag; and

a processor, coupled to the memory, capable of transmitting an acknowledgement of a particular packet to an audio gateway when the first flag and the second flag are asserted;

wherein the first flag is asserted by the processor when the processor successfully receives the particular packet transmitted from the audio gateway, and the second flag is asserted by the processor when the processor successfully receives an acknowledgement from a secondary device wherein a reception of the acknowledgement indicates that the secondary device successfully receives the particular packet;

one among the plurality of controllers is used as a primary device corresponding to a first piconet of a first audio gateway, and another among the plurality of controllers is used as a secondary device corresponding to a second piconet of a second audio gateway which is different from the first audio gateway.