Text Proposal of SA-Preamble Partition in IEEE 802.16m/D1 (15.3.6.1.2)
Document Number: S80216m-09/1902r3
Date Submitted: 2009-08-30
Source:
Yu-Hao Chang, Yih-Shen Chen, Pei-Kai Liao
Chih-Yuan Lin, Paul Cheng
MediaTek
Youngbo Cho, Jaehee Cho
Samsung Electronics
Jinsoo Choi, HanGyu Cho, Jin San Kwaj
LG Electronics
Xiangying Yang, Yang-seok Choi, Kamran Etemad
Intel Corp.
Zhaohua Lu
ZTE
Venue:
IEEE Session #63, Jeju, Korea.
yuhao.chang@mediatek.com, yihshen.chen@mediatek.com
{youngbo.cho, jaehee1.cho}@samsung.com
{emptylie, hgcho, samji}@lge.com
xiangying.yang@intel.com
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
▪ Different types of ABS, such as macro-BS, hot zone BS, relay and
femto, are all employed to satisfy various demands from different
users in different area
▪ Each ABS carries an unique SA-Preamble sequence as its identity
▪ SA-Preamble set is divided into several non-overlapped subsets,
each of which is reserved for different ABS types
▪ If SA-Preamble partition information is carried in SFH, AMS can
select the preferred ABS type once it decodes the SFH without
referring to the higher layer message, such as MAC message, to
reduce network entry or handover latency
▪ 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 Sequences in 802.16m
▪ According to the resolution of #474 comment in the Session 62nd
meeting, 768 SA-Preamble sequences is divided into three
segments, each of which contains 256 sequences
▪ For each segment, only half of 256 sequences are explicitly shown
in IEEE C802.16m-09/1478r3. This is because the other 128
sequences can be generated by flipping and conjugating of the
previous 128 codes
▪ Our partition method is applied to all three segments
Proposed SA-Preamble Partition Table (1/4)
▪ For each SA-Preamble segment, we first make a hard cut between
macro ABS and non-macro ABS cell ID sets
– The total number of cell ID supported for macro ABS is [TBD]
– The size of macro/non-macro BS sets is fixed and is known to
AMS
– No feedback is needed for the hard partition size
Cell ID partition table
Macro ABS
Non-macro ABS
Hard Partition
Soft Partition
Proposed SA-Preamble Partition Table (2/4)
▪ For the non-macro ABS cell ID set, we further divided it into public
non-macro ABS and CSG femto
Macro ABS
Hard Partition
Public Nonmacro ABS
CSG Femto
Soft Partition
▪ A [TBD]-bit index broadcasted in S-SFH-SP3 is used to indicate
the size of these two partitions as below
Proposed SA-Preamble Partition Table (3/4)
▪
For public non-macro ABS partition, we can further divide it as HotZone,
Relay, OSG femto and etc
▪
The partition information is broadcasted in AAI_SCD
▪
The detailed partition mechanism is TBD
▪
Example:
Macro ABS Hotzone Relay
Hard Partition
CSG Femto
Soft Partition
Proposed SA-Preamble Partition Table (4/4)
▪
For CSG femto partition, we further divide it into CSG open and CSG
closed partitions
▪
The partition information is broadcasted in AAI_SCD
▪
The detailed partition mechanism is TBD
▪
Example:
Macro ABS
Hard Partition
Public nonmacro ABS
CSG Closed
Soft Partition
CSG
Open
Text Proposal
▪ Modify the following text in line 6 of Page 288
– Idx = 2mod(q,128)  q /128 , q is a running index 0 to 255.
SA-Preamble sequences are partitioned and each partition is
dedicated to specific base station type like Macromacrocell ABS,
FemtoMacro Hotzone ABS, femtocell ABS and etc. The partition
information is broadcasted in the extended system information. The
base station types are categorized into macro ABS and non-macro
ABS cells by hard partition with [TBD] sequences dedicated for
macro ABS. The non-macro ABS information is broadcasted in a
hierarchical structure, which composes of S-SFH SP3 and AAI_SCD
message. In S-SFH SP3, non-macro ABS cell type is partitioned as
public and CSG femto base stations. The AAI_SCD message
provides finer partition information. The non-macro ABS base
stations can be further categorized different types, such as: hotzone,
relay, OSG and etc. The CSG femto base stations can be further
categorized, such as: CSG-closed and CSG-open.