1. Supporting external CID in RoE
Richard Maiden
Intel
May 2018

2. Background
External entities have a desire to use RoE subType space and use their own mappers/payload structures. Examples:
White rabbit
xRAN
Individual companies (for proprietary payloads)
Challenges
subTypes are currently only for IEEE usage
Proposed solution
Map externally defined payload structures using a flexible pre-defined and or reconfigurable table to map unique CID/OUI values.

3. IEEE CID/OUI Assignment
An IEEE OUI/CID is used to
uniquely identify specific companies and organizations.
Since every CID value is universally unique, SDOs can identify and map organization-specific subType(s) to Reserved4 and define their own payloads following the common RoE header.
Value
RoE subtype (D3.1)
Control 1
Reserved1 2
Structure Agnostic 3
Structure Aware 4
Slow C&M
5-15
Reserved2 16
Native Time 17
Native Frequency IQ 18
PRACH
19-127
Reserved3
Reserved
Reserved5
Experimental

4. Proposal: Add CID/OUI table and ‘CID/OUI subtype assignment’ TLV
Map the 64 subTypes in Reserved4 to a new CID/OUI subType assignment table. SDO can now use these subTypes and map them to payloads
Create a new enTLV object to configure the table
Define enTLV=9 as the subType mapping object
Define enParam for that object as 5 byte table entry location
TLV assigns unique CID/OUI to any of the RoE subTypes
Example subTypeMapper[2].mapSubtype=0xFAEB6E0005
Maps RoE subType 130 to xRAN payload structure 5
Now subTypes can be mapped to externally defined payloads
RoE subType
CID/OUI subType Assignment (5 bytes)
OUI/CID Mapping (3 bytes)
Payload structure mapping (2 bytes)
128
24-bit value (e.g. xRAN=0xFAEB6E)
e.g. Payload structure 0
129
e.g. Payload structure 1
130
e.g. Payload structure 5 …
191
24-bit value (e.g. AT&T=0xDA2BDD)
Payload ?-?

5. Actual text changes In document order Insert Title here
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6. Add subType mapping object (new sub-clause 5.3.4)
5.3.4 subType mapping object The subType mapping object is a table used to maintain and assign mapped subTypes (as specified in Table 2) from the RoE subtype space to particular OUI or CID entities and their specified subType/payload structures. RoE nodes process mapped subTypes, the corresponding payload structure and optional reserved bits in seqNum as specified by the OUI or CID entity. Organization/company unique OUI or CID values are obtained through IEEE registration. An implementation can pre-populate the mapping table with implementation specific default values. Unused/un-mapped OUI/CID subTypes are indicated by setting the .mapSubtype bits 15 to 0 to ALL_ONES.
RoE subType
OUI/CID subType mapping table (.mapSubtype)
OUI/CID Mapping (3 bytes)
bit39
Payload structure mapping (2 bytes)
bit0
128
The entities OUI/CID identifier
Specific payload structure
129
130 …
191
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7. Add Mapped subTypes (Table 2)
RoE subType values (current text excerpt) RoE subType values (new text excerpt)
b – b,
b – b,
b – b
Reserved3,
Reserved4, Reserved5
Reserved for future use by the IEEE standard
Reserved subType values shall not be transmitted.
RoE messages with Reserved subTypes shall be ignored on receipt.
b – b
Reserved3
Reserved for future use by the IEEE standard
Reserved subType values shall not be transmitted.
RoE messages with Reserved subTypes shall be ignored on receipt.
b – b
Mapped subTypes
Companies and/or organizations owning an OUI or CID can use this subType range for their own subTypes and payload structures as defined in sub-clause
b – b
Reserved4
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8. Add enTLV for mapped subTypes (Table 5)
Object type enumeration (current text excerpt)
Object type enumeration (new text excerpt) 8
Mapper PRACH
RoE mapper PRACH object type, belonging to an RoE mapper FFT.
9-63
Reserved
Reserved for future use by the IEEE standard. 64
RoE TLV
Service OAM. This object type allows TLVs described in IEEE Std TM to be uniquely enumerated for parameter exchange. 8
Mapper PRACH
RoE mapper PRACH object type, belonging to an RoE mapper FFT. 9
subType mapping object
The subType mapping object assigns OUI/CID defined subTypes into the mapped subType space, as defined in sub-clause
10-63
Reserved
Reserved for future use by the IEEE standard. 64
RoE TLV
Service OAM. This object type allows TLVs described in IEEE Std TM to be uniquely enumerated for parameter exchange.
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9. subtype mapping object parameters (new sub-clause 7.2.8)
7.2.8 subType mapping object parameters Sub types in the ‘OUI/CID defined subtypes’ range described in Table 2 can be logically mapped to subTypes defined outside of RoE.
enParam -
Parameter
Bits
Name
Description
0 – 63 40
.mapSubtype
Each mapped subType has a 5 byte mapping table entry as specified in sub-clause The parameter ordering is from first to last mapped subType.
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10. timingInfo for mapped subTypes
In order to be consistant and allow free use according to the proposed 5.3.4: RoE nodes process mapped subTypes, the corresponding payload structure and optional reserved bits in seqNum as specified by the OUI or CID entity. Remove text (from – p20 of PDF, line 27 If .seqNum is in use, the p-counter field shall exist.
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11. Add to PICs A.2.2.3 A.2.4.4 Item Description Sub-clause Value/Comment
Status
Support
MSS
Mapped subTypes (.mapSubtype) supported?
5.3.4
The assignment of mapped subTypes to OUI/CID O
[ ] Yes
[ ] No
MSD
Mapped subtype (.mapSubtype) defaults
List default values
MSS:M
______
MTT
Can .mapSubtype SubType mapping table be reconfigured by TLVs?
7.2.8
Is the mapping table configurable by TLVs?
MSS:O
A.2.2.3
A.2.4.4
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12. PICs Mapper support (insert new MA6)
Structure-agnostic RoE mapper tunneling mode implemented?
8.1
At least one of MA1 to MA6 shall be answered ‘Yes’.
O.1
[ ] Yes
[ ] No
MA2
Structure-agnostic RoE mapper line coding aware mode implemented?
MA3
Structure-aware CPRI mode implemented?
8.2
MA4
Native RoE packet with time-domain I/Q implemented?
8.3
MA5
Native RoE packet with frequency-domain I/Q implemented?
8.4
MA6
OUI/CID defined subtypes and mapping
5.3.4
MA7
Structure-agnostic line coding aware mode supports un/redoing scrambling?
MA2:M
[ ] N/A
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13. subType Mapping WG Motion #1
Add a description of the subType Mapping object consistant with tf3_1805_maiden_CID_support_5.pptx page 6
Modify the RoE subType values consistant with tf3_1805_maiden_CID_support_5.pptx page 7
Add enTLV and enParam for mapped subTypes consistant with tf3_1805_maiden_CID_support_5.pptx page 8 & 9
Remove text consistant with tf3_1805_maiden_CID_support_5.pptx page 10
The editor has the right to make editorial changes
Mover: Richard Maiden Seconder: Richard Tse
Voting members
Yes: __ No: __ Abstain: __
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14. subType Mapping WG Motion #2
Add/modify PICs entries consistant with tf3_1805_maiden_CID_support_5.pptx page 11 & 12
The editor has the right to make editorial changes
Mover: Richard Maiden Seconder: Richard Tse
Voting members
Yes: __ No: __ Abstain: __
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Insert Date here