802.11v Packet Formats
What are 802.11v packet formats?
They define the structure of frames used to exchange management, control, and data information with 802.11v features.
How do 802.11v packet formats differ from standard 802.11?
802.11v extends standard management frames with additional information elements for network management.
What types of frames are modified in 802.11v?
Management frames like Action frames and Beacon frames are enhanced with 802.11v-specific fields.
What is an Action frame in 802.11v?
It’s a management frame subtype used for network management functions like BSS Transition and measurements.
What Information Elements (IEs) are introduced in 802.11v?
Elements such as BSS Transition Candidate List, BSS Transition Management Request, and Measurement Request IEs.
How are BSS Transition Management frames formatted?
They contain specific IEs defining candidate APs and transition timing for client roaming assistance.
Are 802.11v packets backward compatible?
Yes, packets maintain compatibility with legacy 802.11 devices by extending, not replacing, frame structures.
How does 802.11v support Network Assisted Power Saving in packets?
Special IEs in management frames communicate power-saving information between AP and clients.
What role do Measurement Request and Report frames play?
They enable clients to measure and report network conditions, helping the AP optimize performance.
What is the format of a Measurement Report frame?
It includes details like measurement type, duration, and results such as channel load or noise.
How are Extended Capabilities signaled in 802.11v packets?
Through IEs that indicate support for specific 802.11v features like BSS Transition and network-assisted power save.
What is a BSS Transition Candidate List IE?
A list included in management frames that suggests alternative APs for client roaming.
Do 802.11v packets include security features?
Yes, they incorporate fields compatible with existing security protocols to protect management exchanges.
How are 802.11v Action frames identified?
By their Category field set to ‘Radio Management’ with specific Action field codes for 802.11v functions.
Are vendor-specific elements used in 802.11v packets?
Occasionally, for proprietary extensions, but core 802.11v uses standardized IEs.
How do packet formats enable seamless client roaming?
By exchanging transition candidate lists and requests that guide client handoffs with minimal disruption.
What is the size impact of 802.11v packet extensions?
Slightly larger management frames due to added IEs, but optimized to minimize overhead.
Can 802.11v packets carry custom data?
Not typically; they focus on standard management and control information for network optimization.
Where can detailed 802.11v packet format specs be found?
In the official IEEE 802.11v amendment document and related IEEE 802.11 management frame specifications.
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