Transcript IEEE C802.16m-09/2067

Text Proposal of SA-Preamble Partition in IEEE 802.16m/D1 (15.3.6.1.2)
Document Number: C80216m-09/2067
Date Submitted: 2009-08-30
Source:
Youngbo Cho, Jaehee Cho
Samsung Electronics
[email protected]
Venue:
IEEE Session #63, Jeju, Korea.
Re: Letter Ballot #30 on the Draft Amendment (IEEE P802.16m/D1)
Base Contribution:
N/A
Purpose:
To be discussed and adopted by TGm for the 802.16m amendment
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Motivation for SA-Preamble Partitioning
• AMS needs to differentiate ABS type when detecting target SAPreamble
– AMS should be able to know whether the T-ABS is public ABS (ABS
which can be accessible to the AMS) or not
– Different HO conditions are required for HO to different type ABS
• An AMS uses diffetent HO parameters for measurment RSSI if ABS type of T-ABS is
diofferent to S-ABS
• Due to the fast HO requirements to macro ABS, AMS can’t further refer to its
MAC level identifier. Instead, AMS needs to identify ABS type based on SAPreamble
• This will happen when it is impossible to include micro ABS’s information in
NBR-ADV due to large number of micro ABSs (like macro hot-zone ABS,
femto ABS, etc)
• ABS needs to identify ABS type with SA-Preamble
– SA-Preamble sequence is divided into several non-overlapped sub-sets
and each partition is dedicated to specific ABS type.
– The SA-Preamble partition should be flexible, depending on the
deployment scenario, and the partition information should be passed to
AMS without much signaling overhead
SA-Preamble Partitioning
• First, the number of preamble sequences for macro BS are fixed
– The total number of cell ID supported for macro ABS is [120(=20*2*3)]
• Only 114 cell ID in 802.16e
– The size of macro/non-macro BS sets is fixed and is known to AMS
• Hierarchical SA-Preamble partitioning
– Public/Privacy ABS partitioning
• All MS can be accessible/non-accessible
• Transmitted to AMS via S-SFH SP3
– Partitioning for each ABS type
Partition for each ABS type
• Partition information is transmitted via AAI_SCD
• Transmitted to AMS via AAI_SCD
Fixed (0~119)
Macro ABS
Macro hot-zone ABS
Relay
OSG femto
CSG open femto
Public ABS
Partition between Public/Private ABS
• Partition information is transmitted via S-SFH SP3
CSG close femto
Private ABS
Hierarchical SA-Preamble Partitioning
• SA-Preamble partitioning to Public/Private type ABS
– This partition information is transmitted via S-SFH SP3
• “SA-sequence soft partitioning information” (4 bits)
Syntax
Size (bit)
Notes
-
-
S-SFH SP3 IE format () {
SA-sequence soft partitioning information
-
4
-
-
}
– AMS can be determine whether T-ABS is can be accessible
fastly
• Public ABS: All AMS can access to the public ABSs (like macro ABS, macro
hot-zone, open femto, etc)
• Private ABS: Only subscribed AMSs can access to the private ABSs (like
close femto, etc)
Hierarchical SA-Preamble Partitioning
• SA-Preamble partitioning to Public/Private type ABS
– “SA-sequence soft partitioning information” in S-SFH SP3
Value
Sequence ranges for public ABS
(Total number of sequences)
Sequence ranges for private ABS
(Total number of sequences)
0x00
0 ~ 119 (120)
120 ~ 767 (648)
0x01
0 ~ 143 (144)
144 ~ 767 (624)
0x02
0 ~ 165 (168)
168 ~ 767 (600)
0x03
0 ~ 191 (192)
192 ~ 767 (568)
0x04
0 ~ 215 (216)
216 ~ 767 (544)
0x05
0 ~ 239 (240)
240 ~ 767 (528)
0x06
0 ~ 263 (264)
264 ~ 767 (504)
0x07
0 ~ 287 (288)
288 ~ 767 (480)
0x08
0 ~ 311 (312)
312 ~ 767 (456)
0x09
0 ~ 335 (336)
336 ~ 767 (432)
0x10
0 ~ 359 (360)
360 ~ 767 (408)
0x11
0 ~ 383 (384)
384 ~ 767 (384)
0x12
0 ~ 407 (408)
408 ~ 767 (360)
0x13
0 ~ 431 (432)
431 ~ 767 (336)
0x14
0 ~ 455 (456)
455 ~ 767 (312)
0x15
0 ~ 479 (480)
480 ~ 767 (288)
Resolution of partitioning is
24
Hierarchical SA-Preamble Partitioning
• SA-Preamble partitioning dedicated to specific ABS type
– This partition information is transmitted via AAI_SCD
• “SA_PreamblePArtitionforBStype”
Name
Type
Length (Byte)
Value
SA_PreamblePartitionforBStype
xx.1
1
- First 3 bits represent ABS type:
0b000: maco hot-zone
0b001: relay
0b010: OSG femto
0b011: CSG-open femto
0b100: CSG-close femto
0b101~0b111: reserved
- last 5 bits represent the last SA-sequence index for
corresponding ABS type:
0x00 (n=0) ~ 0x31 (n=31),
The last sequence index = (n+1)*24-1
Resolution of partitioning is
24
Hierarchical SA-Preamble Partitioning
• For example:
– SA-Sequence soft partitioning information in S-SFH SP3
• value = 0x11: Public (0~383), Private (384~767)
– SA_PreamblePartitionforBStype
Name (Type)
Value
Note
SA_PreamblePartitionforBStype (xx.1)
00000111
Macro hot-zone, the last SA-sequence index is 239
SA_PreamblePartitionforBStype (xx.1)
01001111
OSG femto, the last SA-sequence index is 383
SA_PreamblePartitionforBStype (xx.1)
10011111
CSG close femto, the last SA-sequence index is 767
120
Macro ABS
239
Macro hot-zone ABS
Public ABS
OSG femto
383
767
CSG close femto
Private ABS
Text Proposal
• Insert the following text in line 9 of page 288
– SA-Preamble sequences are partitioned and each partition is
dedicated to specific base station type like macrocell BS, Macro
Hotzone BS, femtocell BS and etc. The partition information is
broadcasted in the extended system information. The Within each
SA-Preamble segment, the first [40] SA-Preamble sequences are
reserved for macro-BS and the rest of [216] sequences are for
Macro Hotzone and femto BS and etc. The numbers of sequences
for each BS type except macro BS are flexible.
Every ABSs are divided into public ABSs (those are accessible for
all AMSs) and private ABSs (those are accessible only for
subscribed AMSs). The value of partition pointer divides the
preamble sequence into public and private ABSs and is controlled
by a [4]-bit pointer whose value is broadcasted via “SA-sequence
soft partitioning information” in S-SFH SP3.
Text Proposal
▪ Insert the following table after the second paragraph of Page 288
Table xxx – Soft partition of SA-Preamble
Value
Sequence ranges for public ABS
(Total number of sequences)
Sequence ranges for private ABS
(Total number of sequences)
0x00
0 ~ 119 (120)
120 ~ 767 (648)
0x01
0 ~ 143 (144)
144 ~ 767 (624)
0x02
0 ~ 165 (168)
168 ~ 767 (600)
0x03
0 ~ 191 (192)
192 ~ 767 (568)
0x04
0 ~ 215 (216)
216 ~ 767 (544)
0x05
0 ~ 239 (240)
240 ~ 767 (528)
0x06
0 ~ 263 (264)
264 ~ 767 (504)
0x07
0 ~ 287 (288)
288 ~ 767 (480)
0x08
0 ~ 311 (312)
312 ~ 767 (456)
0x09
0 ~ 335 (336)
336 ~ 767 (432)
0x10
0 ~ 359 (360)
360 ~ 767 (408)
0x11
0 ~ 383 (384)
384 ~ 767 (384)
0x12
0 ~ 407 (408)
408 ~ 767 (360)
0x13
0 ~ 431 (432)
431 ~ 767 (336)
0x14
0 ~ 455 (456)
455 ~ 767 (312)
0x15
0 ~ 479 (480)
480 ~ 767 (288)
Text Proposal
• Insert the following text in page 288
– “SA_PreamblePartitionforBStype” in AAI_SCD (defined in
15.2.6.9) which describes the partition information dedicated to
specific ABS type is encoded using the description in Table yyy.
Table yyy – SA_PreamblePartitionforBStype
Name
Type
Length (Byte)
Value
SA_PreamblePartitionforBStype
xx.1
1
- First 3 bits represent ABS type:
0b000: maco hot-zone
0b001: relay
0b010: OSG femto
0b011: CSG-open femto
0b100: CSG-close femto
0b101~0b111: reserved
- last 5 bits represent the last SA-sequence index for
corresponding ABS type:
0b00 (n=0) ~ 0b31 (n=31),
The last sequence index = (n+1)*24-1