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stds-802-16: TG1 COMMENT
[Submitter's Last Name]
Condie
[Submitter's First Name]
Mary
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[Detailed Description of Proposed Insertion, Deletion, Change]
The usage of Physical Channel Descriptor message from the previous
documents has been changed into Downlink and Uplink Channel Descriptor
messages in the current draft. All three messages instead of just the
Downlink and Uplink Channel Descriptor messages are used in the current
draft. This has made this draft difficult to read and understand.
Sections 2.11.2 and sections 2.11.3 are examples of this problem. The
editors should revise the draft so that only the Uplink and Downlink
Channel Descriptor messages are used.
[Reason for Edit]
To improve readability of the document.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Delete the "encryption flag" parameter from the list.
[Reason for Edit]
This parameter is not needed in this direction because the data has
already been decrypted.
[Submitter's Last Name]
Condie
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[Detailed Description of Proposed Insertion, Deletion, Change]
The contents from Section 5.3.1.2 of document 802.16.1.mc-00/14r1, dated
April 14, 2000, should be inserted and modified appropriately.
[Reason for Edit]
The section 5.3.1.2 defines the concept of Service flows, frames and
encoding of the data. This information appears to have been lost during
the document edits. Insertion of this section will vastly improve the
readability of the draft.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change the phrase "64K connections within the sector" to "64K
connections within the downstream channel".
[Reason for Edit]
Connection ID should be local to a channel to allow simplified base
station assignment of it. Since a CPE may only use 1 downstream
channel,
there is no ambiguity.
[Submitter's Last Name]
Condie
[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "DS-MAP" to "DL-MAP" in this line and also all other occurrences
in the document.
[Reason for Edit]
To be consistent in the naming convention.
[Submitter's Last Name]
Condie
[Submitter's First Name]
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E
[Detailed Description of Proposed Insertion, Deletion, Change]
Change "center frequency" to "center radio frequency".
[Reason for Edit]
To remove possible ambiguity with intermediate frequency.
[Submitter's Last Name]
Condie
[Submitter's First Name]
Mary
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[Detailed Description of Proposed Insertion, Deletion, Change]
This parameter should be deleted.
[Reason for Edit]
There is no way that the CPE can know the number of subscribers since
they may be hidden behind other devices such as routers.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
The IP Address should be specified as 4 or 16 octets in length.
[Reason for Edit]
To Support IP Version 6 protocol. The type of address may be determined
from the length.
[Submitter's Last Name]
Condie
[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
48 bit MAC address conflicts with the requirements in rest of the
document. (See page 84, line 30)
Does the CPE require 2 addresses - one 48 bit and one 64 bit?
[Reason for Edit]
To keep the requirements consistent throughout the standard.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "TFTP Server Provisioned Modem Address" to "TFTP Server
Provisioned CPE Address" and all other occurrences in the document.
[Reason for Edit]
To accurately reflect the name of the network element.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change the name "IUC Type" to "Modulation Type".
[Reason for Edit]
To avoid confusion and be consistent with the terminology.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change the name "IUC Type" to "Modulation Type".
[Reason for Edit]
To avoid confusion and be consistent with the terminology.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "TFTP Server Provisioned Modem address" to "TFTP Server
provisioned CPE address".
[Reason for Edit]
TFTP server provides the CPE address and not the modem address.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "US-MAP" to "UL-MAP" in this line and also all other occurrences
in the document.
[Reason for Edit]
To be consistent in the naming convention.
[Submitter's Last Name]
Condie
[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change the sentence "Each uses a frame......of 1 millisecond" to "Each
uses a frame duration as specified in section 3.3.1".
[Reason for Edit]
To align the MAC and PHY sections of the standard. In the PHY section
the frame time is not fixed.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "the whole 1 millisecond frame" to "the whole frame".
[Reason for Edit]
To align the MAC and PHY sections of the standard. In the PHY section
the frame time is not fixed.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "which has a length of 4 modulation symbols each" to "which is a
multiple of 4 modulation symbols each".
[Reason for Edit]
To align the MAC and PHY sections of the standard.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change the sentence "The number of PHY slots with each 1 mSec frame is a
.....rate" to "The number of PHY slots with each frame is a .......
rate".
[Reason for Edit]
To align the MAC and PHY sections of the standard.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "The request IE provides an upstream interval ......
transmission" to "Via the Request IE the Base Station specifies an
upstream interval ....... transmission".
[Reason for Edit]
To accurately describe the purpose of an IE and improve readability.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "The Initial Maintenance IE provides an interval ...... network"
to "Via the Initial Maintenance IE the Base Station specifies an
interval ....... network".
[Reason for Edit]
To accurately describe the purpose of an IE and improve readability.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "The Station Maintenance IE provides an interval ......
adjustment" to "Via the Station Maintenance IE the Base Station
specifies an interval ....... adjustment".
[Reason for Edit]
To accurately describe the purpose of an IE and improve readability.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
CPE should not increase power if a collision has occurred.
[Reason for Edit]
Collisions during network entry, which may commonly occur after a local
power failure, may cause a CPE to adjust its power to too high a level.
This may result in interference and an unstable network. Possible
solutions to alleviate this problem are:
- implementation of collision detection mechanism at the base station
and an appropriate collision feed back mechanism .
- to have base station transmit its actual transmit power in a message
to CPE so that the CPE can determine maximum power to use.
- configure CPE with maximum transmit power (This is undesirable as it
will add configuration to CPE).
In order to have a best possible solution in the standard, contributions
should be invited to address this issue.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "CM" to "CPE".
[Reason for Edit]
To correct a typo.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
After the "operational" state the CPE should not go into "Reg-Rsp" input
state.
[Reason for Edit]
The CPE should not receive multiple Reg-Rsp. However if it is possible
that the CPE can receive multiple Reg-Rsp due to glare/error scenarios
then the CPE should verify the validity of the most recent reg-rsp with
the data previously received. The text should also be updated to reflect
this.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "TFTP Server IP" to "TFTP Server Provisioned Modem Address".
[Reason for Edit]
To make state diagrams consistent with the text description.
[Submitter's Last Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "Service IDs" to "Connection IDs".
[Reason for Edit]
The concept of Service IDs have been changed to connection IDs.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "SID" to "CID".
[Reason for Edit]
The concept of Service IDs have been changed to connection IDs.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change the column heading "Service Identifier" to "Connection
Identifier".
[Reason for Edit]
The concept of Service IDs have been changed to connection IDs.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "SID" to "CID".
[Reason for Edit]
The concept of Service IDs have been changed to connection IDs.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
The reference configuration section should either be removed or made
consistent with the section 1.14 starting at line 1 on page 17.
[Reason for Edit]
To avoid confusion.
[Submitter's Last Name]
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[Submitter's First Name]
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grammar, etc., (TBD) for a comment on a section marked "TBD"]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "upstream center frequency" to "upstream center radio frequency".
[Reason for Edit]
To avoid confusion between the radio and intermediate frequency.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Delete the paragraph starting with "The following table .... of 5".
[Reason for Edit]
The channel bandwidths have not been reviewed. Data table is incomplete
e.g., alpha factor, ETSI channelisation are not listed. Contributions
should be solicited to address these areas.
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[Detailed Description of Proposed Insertion, Deletion, Change]
The table at the top of the page should be deleted.
[Reason for Edit]
The channel bandwidths have not been reviewed. Data table is incomplete
e.g., alpha factor, ETSI channelisation are not listed. Contributions
should be solicited to address these areas.
[Submitter's Last Name]
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[Submitter's First Name]
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grammar, etc., (TBD) for a comment on a section marked "TBD"]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Insert "See section 2.5.5.3 for encoding information."
[Reason for Edit]
To improve readability of document.
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[Submitter's First Name]
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grammar, etc., (TBD) for a comment on a section marked "TBD"]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Insert "See section 2.5.5.3 for encoding information."
[Reason for Edit]
To improve readability of document.
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "the Service Flow Reference shall no longer be used" to "the
Service Flow Reference shall no longer by the MAC. However it is used
between the Application Convergence layers and the SAP to map data to
connection ids."
[Reason for Edit]
The current convergence layer primitives are insufficient to allow for
mapping of data to connections. Use of the service flow reference for
this is just one way to do this. We should request contributions in this
area.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
Change "service class" to "service flow reference"
[Reason for Edit]
The SAP or MAC layer has no knowledge of the QoS parameters associated
with a
particular ATM VPI/VCI or IP address and therefore cannot select a
particular connection id. Service class cannot be used because there may
be multiple connections with the same service class. A combination of
VPI/VCI and service class could be used to select a conn id but this
means that the SAP would need to be configured with this information and
there are no primitives defined to do this. In addition the service
class would need to be parsed in real time and it is ASCII text. Similar
problems exist for IP primitives.
This change suggests used the service flow reference as the item for
mapping. The service flow reference is in the config file and may be
used for more detailed configuration to map customers/QoS to connection
ids. The convergence layer would retain a service flow reference to
connection id mapping. This avoids the need of the application layer
from knowing the connection id, and also means that management
primitives for static configurations are not required. However we
believe that management primitives should be provided to allow
application layers to create connections dynamically. The MAC provides
this mechanism but there is no way for applications to activate it.
Use of the service flow reference for this purpose is just one way this
can be done. Contributions in this area and for dynamically creating
connections should be solicited.
[Submitter's Last Name]
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[Submitter's First Name]
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[Detailed Description of Proposed Insertion, Deletion, Change]
[Reason for Edit]