CableLabsSpecification Engineering Change (EC) Form
Project
EC TRACKING INFORMATION (Blue fields to be completed by CableLabs only)
DOCSIS
N Identifier MULPIv3.1-N-14.1205-2
Status
CM-SP-MULPIV3.1-I03-140610
10/22/2014
Comment Period End Date 10/29/2014
SEVERITY
10/29/2014
Comment Period End Date 11/12/2014
Non-Critical
11/12/2014
114
Critical
Cert Wave No
Overall Type of Change (Tech/Edit/Both) Technical
Affected Specification
ECR Date
ECO Date
ECN Date
ECN Effective Date
Version
2
CHANGE TYPE
Minor
Major
TO OBTAIN LATEST ISSUED SPECIFICATION WORD VERSION, CLICK HERE:
https://www.cablelabs.com/doczone/docsis/requirements/specs/current/issued/
TO SUBMIT EC, EMAIL COMPLETED FORM TO: docsis_ec@cablelabs.com
SPECIFICATION DOCUMENT DETAILS
Document EC is written against: CM-SP-MULPIv3.1 Issued Version # I03
AUTHOR INFORMATION
Primary Author
Email
Company
Additional Contributors
First Charaf Last Hanna
charaf.hanna@st.com
STMicroelectronics
Title of EC
Date sent to CableLabs
Configration of an OFDM backup primary downstream channel to assess timestamp suitability
10/15/14
Date of revised EC
Brief description of revision
10/22/14
correction of EC processing error
Country
Phone
USA
972-466-7573
ENGINEERING CHANGE DOCUMENT DETAILS
EC REVISION HISTORY
DETAILED PROPOSED CHANGES
Sections Affected
REQs Affected
10.5.1.2
No
Test Plans Affected
No
OTHER RELATED ENGINEERING CHANGES (LIST ALL THE APPLY)
The following EC(s) are recommended to be processed in conjunction with this document:
EC#
Title of EC
Affected Document
NOTE! IMPORTANT EC AUTHOR INSTRUCTIONS:
For an ECR to advance to ECO status:
- Requirements Affected section of the embedded DOCSIS-SpecDetailChange.docx must be completed.
- If applicable, the embedded TestPlanDetailChanges.docx must be completed.
For an ECO to advance to ECN status:
- If applicable, compiled MIB files and final Schema docs must be attached before requested changes can
move to ECN status and noted as attachments in the table directly below.
DOCSIS_3.1_Spec-TestPlan_EC-Form_6-2014.docx
1 of 2
In submitting the Engineering Change Request ("ECR"), the Author(s) [primary author, additional authors, and contributors], individually and as
an authorized representative of the Company, agrees that if CableLabs incorporates this ECR in whole or in part into the relevant Specification,
all intellectual property in the ECR shall be licensed royalty free, and without confidentiality, under the terms of the "Data Over Cable Service
Interface Specifications License Agreement" ("Contribution Agreement"). CableLabs may disclose the content of this ECR to CableLabs'
members and such others as is necessary for the development of CableLabs' specifications. Questions about the Authors' licensing of
intellectual property in this ECR submission may be directed to legal@cablelabs.com.
This Engineering Change has the following file(s) attached.
Type of Attachment(s) (Visio, Word, txt,
.yang, etc.)
File Name of Attachment(s)
Word
DETAILED DESCRIPTION OF PROBLEM:
The configuration listed for a backup primary downstream channel to be deemed suitable for its timestamp to be used for
upstream transmission in the following paragraph is incorrect.
If the CM determines that the timestamp received on the Backup Primary Downstream Channel is suitable for using
for upstream transmissions (e.g. the Primary
Downstream and Backup Primary Downstream are both SC-QAM channels with the same configuration
[modulation, interleaver, etc.] or both OFDM channels with the same configuration [PLC modulation, interleaver,
pilot structure]), the CM MAY use station maintenance to re-range the upstream channels.
PLC modulation, interleaver, pilot structure parameters have no bearing on the timestamp suitability, rather the FFT
size and the cyclic prefix are the pertinent parameters
CHANGE DETAILS FOR THE SPECIFICATION:
Complete Engineering Change details for the specification are contained in the following embedded files:
EChange
MULPIv3.1-14.1205-2.docx
End of Request
DOCSIS_3.1_Spec-TestPlan_EC-Form_5-2014.docx
2 of 2
In submitting the Engineering Change Request ("ECR"), the Author(s) [primary author, additional authors, and contributors], individually and as
an authorized representative of the Company, agrees that if CableLabs incorporates this ECR in whole or in part into the relevant Specification,
all intellectual property in the ECR shall be licensed royalty free, and without confidentiality, under the terms of the "Data Over Cable Service
Interface Specifications License Agreement" ("Contribution Agreement"). CableLabs may disclose the content of this ECR to CableLabs'
members and such others as is necessary for the development of CableLabs' specifications. Questions about the Authors' licensing of
intellectual property in this ECR submission may be directed to legal@cablelabs.com.