CPC H04W 84/20 (2013.01) [H04W 36/30 (2013.01); H04W 52/0274 (2013.01); H04W 52/0296 (2013.01); H04W 76/14 (2018.02); H04W 76/23 (2018.02)] | 17 Claims |
1. A role change method between a first earbud and a second earbud, comprising:
obtaining, by the second earbud, a clock (CLK) signal of the first earbud, wherein the first earbud is a master device, and the second earbud is a slave device;
obtaining, by the second earbud, a Bluetooth slot boundary signal of the first earbud;
receiving, by the second earbud, a role change request from the first earbud, wherein the role change request is based on determining that a remaining battery charge at the first earbud is less than a remaining battery charge at the second earbud;
sending, by the second earbud, a role change acceptance command to the first earbud; and
changing roles of the first and second earbuds in less than 80 slots from the role change request, wherein the first earbud becomes the slave device, and the second earbud becomes the master device.
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