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Bluetooth communication system capable of increasing generation efficiency of cypher keys required for data transmission between Bluetooth host device and Bluetooth device set, and related Bluetooth device set

專利號
US11997480B2
公開日期
2024-05-28
申請人
Realtek Semiconductor Corp.（TW Hsinchu）
發(fā)明人
Yu Hsuan Liu; Yung Chieh Lin; Po Sheng Chiu
IPC分類
H04W12/041; G06F3/0482; H04L9/08; H04L9/14; H04W4/80; H04W8/00; H04W12/03; H04W12/037; H04W12/0471; H04W12/50; H04W12/55; H04W76/15; H04W84/18
技術(shù)領(lǐng)域
bluetooth,cypher,device,member,host,key,circuit,first,operably,second
地域： Hsinchu

摘要

A Bluetooth communication system includes: a Bluetooth host device; and a Bluetooth device set which including a first member device and a second member device. The first member device transmits a device information of the first member device to the Bluetooth host device. The Bluetooth host device controls a display device to display a candidate device list, and to display a single device item in the candidate device list to represent the Bluetooth device set, but does not simultaneously display two device items in the candidate device list to represent the first member device and the second member device. The Bluetooth host device further establishes a connection with the first member device to conduct pairing procedure to generate a first cypher key after receiving a selection command. The first member device further establishes a connection with the Bluetooth host device to conduct pairing procedure to generate a second cypher key.

說明書

For example, in the embodiments where both the Bluetooth host device 110 and the first member device 120 support the BLE Audio technology, the Bluetooth host device 110 may adopt the BLE Audio technology to transmit audio data to the first member device 120, and the Bluetooth host device 110 can utilize the Low Complexity Communication Codec (LC3) to encode the audio data. As a result, it not only reduces the power consumption of the Bluetooth host device 110 and the first member device 120 to thereby extend the serving time of the Bluetooth host device 110 and the first member device 120, but also effectively improves the overall quality of the audio playback operations.

As shown in FIG. 3, after the second cypher key Key-2 is generated by the first control circuit 125, the first control circuit 125 may further perform the operation 302 to utilize the first communication circuit 121 to transmit a device set identification information Set-ID corresponding to the Bluetooth device set 102. For example, the first control circuit 125 may utilize a Set Identity Resolving Key (SIRK) of the Bluetooth device set 102 to be the device set identification information Set-ID of the Bluetooth device set 102.

In this situation, the host-side communication circuit 111 of the Bluetooth host device 110 may perform the operation 304 to receive the device set identification information Set-ID transmitted from the first member device 120.

權(quán)利要求

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