[wi-sun rlmmwg] Changes to RLMM Annex in PHY Specification

[Ryota Yamada]

Dear Kunal-san,

I will put my comments between lines below.


On 2016/03/03 8:20, Kunal Shah wrote:
> Dear RLMM WG and Yamada-san,
>
> PHYWG recently gone through the ballot process as part of the PHY
> specification and some of the comments received as part of the RLMM
> profile Annex.
>
> One of the comment is to change the support for FCS type sentence.
>
> Currently the RLMM Annex as part of the PHY specification includes,
> "The FCS Type field (in the PHR) shall be set to 0 (4-octet CRC). It can
> also use 2-octet CRC, in which case, the FCS Type field is set to 1.”
>
> Proposed change,
> "The FCS Type field (in the PHR) shall be set to 1 (2-octet CRC).
> Packets received with the FCS field set to 0 may be discarded.”

In RLMM Profile, as a result of the discussion in RLMM WG, both 2-octet 
FCS and 4-octet FCS can be supported. When PSDU size is no more than 255 
octets, some devices can use 2-octet FCS. On the other hand, some other 
devices can choose to se 4-octet FCS in different type of network 
defined in RLMM Profile. Therefore, the proposed change is not acceptable.


> Other editorial changes was proposed to change the sentence from, "This
> normative annex specifies PHY requirements for the Wi-SUN RLMM
> profile.”, to "This normative annex contains PHY requirements specific
> to the Wi-­SUN RLMM profile.”

This editorial change seems to be acceptable.


Best regards,
Ryota


> I would like to ask the group if the above resolution is acceptable as
> shown above. Please let me know of any comments or objections by 4th
> March 10PM JST.
>
> Please let me know of any comments or questions.
>
> Regards,
> Kunal Shah
> PHYWG Chair
>
>

-- 
+--------------------------------
| Ryota Yamada <ryamada at ari.ncl.omron.co.jp>
|
| OMRON Corporation
|  Technology and Intellectual Property H.Q.
|   Planning and CTO Support Division
|    Open Innovation Sec.
|
| Tel: +81-774-74-2158 (Ext: 7-232-6558)