最終更新:2022-08-15 (月) 14:45:47 (620d)
Bluetooth Classic/ベースバンド/パケット/ペイロード/ヘッダ
長さ
- The payload header is one or two bytes long.
- Basic rate packets in segments one and two have a 1-byte payload header
- Basic Rate packets in segments three and four and all Enhanced Data Rate packets have a 2-byte payload header.
フィールド
- The payload header specifies the
- logical link (2-bit LLID indication)
- controls the flow on the logical channels (1-bit FLOW indication)
- a payload length indicator (5 bits and 10 bits for 1-byte and 2-byte payload headers, respectively)
- In the case of a 2-byte payload header, the length indicator is extended by five bits into the next byte.
LLID
FLOW
- L2CAPレベルのフローコントロールで使う
LENGTH
BR single Slot ACL Packet
- LSBから
ビット 2 1 5 フィールド LLID FLOW LENGTH