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Title:
3G1XServices packet
Abstract:
This contribution suggest corrective text for the discrepancy pointed
out by Samsung contribution C25-20040920-029.
Source:
Parag Agashe
QUALCOMM Incorporated
858-658-5076
pagashe@qualcomm.com
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Date:
October 13, 2004
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Recommendation:
Review and adopt.
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Notice
QUALCOMM Incorporated grants a free, irrevocable license to 3GPP2 and its Organization Partners to
incorporate text or other copyrightable material contained in the contribution and any modifications
thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner’s name
any Organizational Partner’s standards publication even though it may include portions of the
contribution; and at the Organization Partner’s sole discretion to permit others to reproduce in whole
or in part such contributions or the resulting Organizational Partner’s standards publication.
QUALCOMM Incorporated is also willing to grant licenses under such contributor copyrights to third
parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an
Organizational Partner’s standard which incorporates this contribution.
This document has been prepared by QUALCOMM Incorporated to assist the development of
specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be
construed as a binding proposal on QUALCOMM Incorporated. QUALCOMM Incorporated specifically
reserves the right to amend or modify the material contained herein and nothing herein shall be
construed as conferring or offering licenses or rights with respect to any intellectual property of
QUALCOMM Incorporated other than provided in the copyright statement above.
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1 INTRODUCTION
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Contribution number C25-20040920-029 from Samsung pointed out that there exists no
mechanism in C.S0024-A to fragment a 3G1X packet if the 3G1X Circuit Services
Notification Protocol is bound to a stream (as against a Virtual Stream). This problem can
be remedied by carrying the 3G1X LAN Encapsulated PDU as payload of a signaling
message of the 3G1X Circuit Services Notification Protocol, thus allowing the segmentation
service of SLP-F to be used.
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2 PROPOSED TEXT CHANGES
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Page 217, line 16:
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5.2 Data Encapsulation for the InUse Instance of the Application
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The 3G1X Circuit Services Notification Protocol sends a 3G1X LAC encapsulated PDU
as payload in a 3G1XServices message.
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If the 3G1X Circuit Services Notification Application is bound to a stream in the Stream
Layer, it uses the Signaling Application to transmit and receive messages. If this application
is bound to a virtual stream in the Stream Layer, it uses the stream protocol such as
Generic Virtual Stream Protocol to transmit and receive messages.
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Page 221, line 5:
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5.5.3 Protocol Data Unit
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The 3G1X Circuit Services Notification Protocol sends a 3G1X Link Access Control (LAC)
encapsulated Protocol Data Unit (PDU) containing a 3G1X Layer 3 message as payload in a
3G1XServices message.
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2.1.1 Procedures and Messages for the InUse Instance of the Protocol
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2.1.1.1 Procedures
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2.1.1.1.1 General Requirements
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The 3G1X Circuit Services Notification Protocol receives a 3G1X LAC encapsulated PDU
containing a 3G1X Layer 3 message for transmission from the higher layer Error!
Reference source not found., and forms a 3G1XServices message. As defined in Error!
Reference source not found., a LAC encapsulated PDU is a LAC PDU together with the
associated length and the Cyclic Redundancy Check (CRC) fields added by the
Segmentation and Reassembly (SAR) sublayer of the 3G1X LAC.
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The higher layer shall set the ACK_REQ field of the encapsulated PDU to ‘0’. The higher
layer shall set the VALID_ACK field of the encapsulated PDU to ‘0’. If the payload from the
3G1X LAC layer is to be delivered reliably, then the sender shall set AckRequired field of the
3G1XServices message to ‘1’. Otherwise, the sender shall set the AckRequired field of the
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3G1XServices message to ‘0’. Upon receiving a 3G1XServices message with AckRequired
field set to ‘1’, the receiver shall respond with a PacketAck message. If the sender does not
receive a PacketAck message within an implementation specific time interval in response to
the corresponding 3G1XServices message requiring an acknowledgment, then the sender
should retransmit the 3G1XServices message an implementation specific number of times.
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A 3G1XServices message shall have priority in the range 20 to 50, inclusive.
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5.5.4.1.2.1 Transmission and Reception of LAC Encapsulated PDUs
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The higher layer shall construct the LAC Encapsulated PDU as if for transmission on the
r-csch logical channel as defined in Error! Reference source not found. . The higher layer
shall omit the Radio Environment Report Fields (See Error! Reference source not found. )
of the Utility Sublayer from the LAC Encapsulated PDU sent to the Stream Layer. The LAC
Encapsulated PDU shall contain only messages with MessageIDs listed in the
AllowedReverseLinkMessages attribute. If the LAC Encapsulated PDU contains an Order
message, then the Order message shall contain only orders with (order codes, order
qualification code) pairs listed in the OrderCodeReverse attribute. If an order qualification
code is not included along with an order code in the OrderCodeReverse attribute, then the
Order message may contain an order with any order qualification code for that order code.
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The access network shall construct a LAC Encapsulated PDU as if for transmission on the
f-csch logical channel as defined in Error! Reference source not found.. The LAC
Encapsulated PDU shall contain only messages with MessageIDs listed in the
AllowedForwardLinkMessages attribute. If the LAC Encapsulated PDU contains an Order
message, then the Order message shall contain only orders with (order codes, order
qualification code) pairs listed in the OrderCodeForward attribute. If an order qualification
code is not included along with an order code in the OrderCodeForward attribute, then the
Order message may contain an order with any order qualification code for that order code.
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2.1.1.2 Message Formats
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2.1.1.2.1 3G1XServices
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The access terminal or the access network sends a 3G1XServices message to send a 3G1X
LAC Encacpsulated PDU.
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Field
Length (bits)
MessageID
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AckRequired
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MessageSequence
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PDULength
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PDU
PDULength × 8
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MessageID
The sender shall set this field to 0x02.
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AckRequired
The sender shall set this field to ‘1’ if the receiver is required to
acknowledge the receipt of this message. Otherwise, the sender shall
set this field to ‘0’.
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MessageSequence
If AckRequired is ‘1’, then the sender shall set this field to one more
(modulo 64) than the MessageSequence field of the last 3G1XServices
message requiring acknowledgement sent by the sender. Otherwise,
the sender shall set this field to zero.
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PDULength
The sender shall set this field to the length, in units of octets, of the
3G1X LAC encapsulated PDU carried in this 3G1XServices message.
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PDU
The sender shall set this field to the 3G1X LAC Encapsulated PDU.
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2.1.1.2.2 PacketAck
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The access terminal or the access network sends a PacketAck message to acknowledge the
receipt of a 3G1XServices message.
Field
Length (bits)
MessageID
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AckSequence
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Reserved
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MessageID
The sender shall set this field to 0x00.
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AckSequence
The sender shall set this field to the MessageSequence field of the
3G1XServices message whose receipt is being acknowledged.
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Reserved
The sender shall set this field to ‘00’. The receiver shall ignore this
field.
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Channels
Addressing
FTC
CC
RTC
AC
unicast
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SLP
Priority
Best Effort
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