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

4-June-07 P1901_PRO_016_r0
MAX_CAC_DRP_TO
CPE TDR HE
CAC_Req
CAC_Rsp
CAC_Drp
CAC_Req
CAC_Rsp
CAC_Drp
Figure 136 CAC Protocol Scenario 9
Figure 136 CAC_Drp message is lost. CPE node will deregister flow after MAX_CAC_DRP_TO time without
receiving the resource (Tokens with a register Session ID).
Automatic Management of Crosstalks between not Synchronized Systems
This section describes a mechanism to avoid crosstalk that may be implemented but is not mandatory.
Once the nodes realize that there is more than one master in the channel by means of the Master Id (see 4.4.1), it is
necessary to take some measures to avoid such interferences.
The solution is to coordinate both BPL cells, and the simplest way to do it is subordinate one of the BPL cells. Next,
the algorithm is explained:
MID hierarchy
When the crosstalk is detected, then the nodes must decide which BPL cell must subordinate.
Submission page 270 UPA-OPERA