IEEE 1901.2A-2015 pdf download

IEEE 1901.2A-2015 pdf download.IEEE Standard for Low-Frequency (less than 500 kHz) Narrowband Power Line Communications for Smart Grid Applications
5. Mac layer
5.6 Frame formats
5.6.3 Information elements (IEs)
5.6.3.2 IE types
Change text as shown:
There are two IE types: Header and Payload.
Header IEs are used by the MAC to process the frame. Header IEs cover security, addressing, etc., and are part of the MHR.
Payload IEs are destined for another layer or SAP and are part of the MAC payload. If security is requested for the frame, then the PIE and MAC payload shall be encrypted. If security is not requested for the frame,then the PIE and MAC payload shall not be encrypted. The security mechanisms are left to other layers.
5.6.3.6 Example of IE use
Insert sentence immediately after Figure 5-14 as follows:
The Payload IE may be sent encrypted as well as not encrypted, as instructed by the upper layers.
5.8 Tone Map Response command
Change the text in item c) as follows:
c) When the destination station receives a data frame shall check the TMR bit in the Segment Control field. If the bit is set, the destination station shall estimate the SNRs for each sub-band per-tone quality of the channel and then construct and send a Tone Map Response command message back to the originator station. The destination station shall not send a tone map response message if the TMR bit is not set. The tone map response message shall be transmitted using ROBO modulation.
Super-ROBO mode shall be used if macDiscoveryMode (Table 5-10) is set to TRUE.
5.9 Constants and PIB attributes
Change Table 5-9 by changing the aMaxMACPayloadSize parameter value from “1280” to “1576” and change Table 5.10 by adding the last row as follows:IEEE 1901.2A pdf download.IEEE 1901.2A-2015 pdf download