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Medium Access Control (MAC) and Physical Layer (PHY) - CISE

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4-June-07 P1901_PRO_016_r0<br />

Tonemap Table that contains the amount of bits that shall be transmitted by each<br />

subcarrier.<br />

Token The token is the <strong>MAC</strong> delimiter which terminates a regular MPDU. There are<br />

ten types of tokens: data <strong>and</strong> distributor token are used to propose transmission<br />

opportunities to one or more distant node, access/access reply tokens are used<br />

to discover Unregistered slaves, polling <strong>and</strong> TDR token are used for the slave<br />

<strong>and</strong> TDR states polling respectively, non-returnable token is used for allocating<br />

simultaneous transmission opportunities to several slaves (spatial reuse),<br />

silence token is used for sending a regular MPDU <strong>and</strong> keeping control of the<br />

medium after the transmission of this MPDU, CSMA token allow the priorized<br />

contention for the following transmission to every node that demodulate it, <strong>and</strong><br />

clock token allow the synchronization in time of every node in the BPL cell.<br />

Unicast A transmission that is addressed to a unique recipient.<br />

Unregistered slave An Unregistered slave is not managed by any master. A master can detect such<br />

slaves via the exchange of an access frame <strong>and</strong> an access reply frame.<br />

Visibility From a node to another node, when the first node is able to demodulate the<br />

token announce sent by the second node.<br />

Word A data unit of 32-bits<br />

1.6 ABBREVIATIONS AND ACRONYMS<br />

4D Four Dimensional<br />

AAA Authorization – Authentication – Accounting<br />

ABLP Adaptive Bit-Loading Protocol<br />

ABR Available Bit Rate<br />

ACK ACKnowledge<br />

Submission page 25 UPA-OPERA

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