IEEE C802.16m-10/0421
Project
IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16>
Title
Illustration of SFH Update and Application of New SFH Information in IEEE 802.16m
(16.2.23)
Date
Submitted
2009-03-05
Source(s)
Sassan Ahmadi, Hujun Yin, Aran Bergman,
Hsuan Yi, Shantidev Mohanty
Emails:
Intel
Shantidev.mohanty@intel.com
Sassan.ahmadi@intel.com
Re:
Call for LB #31 on “ P802.16m/D4”:
Target topic: “16.2.23”
Abstract
The contribution proposes the modifications to the DL Control Structure section to be included in
802.16m LB#31.
Purpose
To be discussed and adopted by TGm for the 802.16m L#31.
Notice
Release
Patent
Policy
This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It
represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion.
It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution,
and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any
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to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also
acknowledges and accepts that this contribution may be made public by IEEE 802.16.
The contributor is familiar with the IEEE-SA Patent Policy and Procedures:
<http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and
<http://standards.ieee.org/guides/opman/sect6.html#6.3>.
Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and
<http://standards.ieee.org/board/pat>.
1
IEEE C802.16m-10/0421
Illustration of SFH Update and Application of New SFH Information in IEEE 802.16m (16.2.23)
Sassan Ahmadi, Hujun Yin, Aran Bergman, Hsuan Yi, Shantidev Mohanty
Intel
1 Text Proposal for Change of S-SFH IE information fields
The update procedure of SFH as well as the application of the new SFH information is very
complicated. This contribution proposes figures and flow chart to illustrate these steps.
Proposed Text
-------------------------------
Proposed Text Start
---------------------------------------------------
[Note to Editor: Insert the following text and Figure after line 56 in “16.2.23 Update of S-SFH IEs” ]
S-SFH SP1
S-SFH SP3
S-SFH SP2
20 ms
1
2
3
4
5
6
7
25
26
27
CC
K
K
K
K
K
K
K
K
K
CB
000
000
000
000
000
000
000
000
000
FO
0
0
0
0
0
28
29
30
31
K+1
K+1 K+1
K+1
100
100
100
1
100
1
32
33
34
35
K+1
K+1
K+1
K+1
100
K+1
K+1
K+1
1
0
0
SP1 changed
CC: S-SFH Change Count
New SP1 applied
CB: S-SFH SP Change Bitmap
FO: SFH offset (where new SP information is applied)
Figure xxx: Illustration of S-SFH SP1 content update.
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IEEE C802.16m-10/0421
S-SFH SP1
S-SFH SP3
S-SFH SP2
20 ms
1
2
3
4
5
6
7
25
26
27
CC
K
K
K
K
K
K
K
K
K
CB
000
000
000
000
000
000
000
000
000
FO1
0
0
0
FO2
0
0
0
0
28
29
30
31
K+1
K+1 K+1
K+2
100
100
110
1
100
1
0
SP1 changed
32
33
34
K+2
K+2
K+2
110
110
010
1
0
1
35 36
37
38
39
K+2
K+2 K+2
K+2
010
010
010
0
1
010
0
1
40
43
41
42
K+2
K+2
K+2
K+2
010
010
010
000
0
0
0
0
SP2 changed
CC: S-SFH Change Count
CB: S-SFH SP Change Bitmap
FO1: SFH offset for SP1 (where new SP information is applied)
FO2: SFH offset for SP2 (where new SP information is applied)
New SP1 applied
Figure yyy: Illustation of S-SFH SP1 and S-SFH SP2 content update.
3
New SP2 applied
IEEE C802.16m-10/0421
Decode P-SFH IE and retrieve S-SFH
change count
Decode P-SFH IE in next SFH
Retrieved S-SFH change count is same as the
stored S-SFH change count (SCC)
YES
Erroneous P-SFH IE decoding
Retrieved SCC – Stored SCC > 1
Retrieved SCC – Stored SCC < 1
NO
YES
Decode all the S-SFH SPs during
their earliest transmission
occurences
NO
Retrieved SCC – Stored SCC = 1
YES
S-SFH SP change bitmap == 0
YES
Decode all the S-SFH SPs during
their earliest transmission
occurences
NO
Decode the S-SFH SPs corresponding to the nonzero bits of S-SFH SP change count bitmap during
their earliest transmission occurences
AMS has latest SFH information
Figure zzz: Procedures uses by an AMS to have up-to-date S-SFH contents.
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IEEE C802.16m-10/0421
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