関連ワード:  medium access control mac layer    medium access control mac protocol    medium access control mac protocol specification    medium access control (mac) sublayer    nr medium access control mac protocol specification    ieee 802.3 media access control layer mac is responsible for what    wireless lan medium access control mac and physical layer phy specifications    explain the role of the medium access control mac layer in ieee 802.11    what is medium access control    define medium access control