2007-7-18
IEEE C802.16m-07/132r2
Project
IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16>
Title
Comments on P802.16m Requirements Document to confirm with ITU-R WP8F “IMTAdvanced” Documents
Date
Submitted
2007-7-18
Source(s)
Paul Cheng
paul_cheng@mtk.com.tw
MediaTek Inc.
No.1, Dusing Road 1,
Science-Based Industrial Park,
Hsinchu, Taiwan 300, R.O.C.
Yuan Pin Lin, Chun Fang Lee, Fan-Shuo
Tseng, Chieh Yuan Ho, Chung-Hsien Hsu,
Ta-Sung Lee, Yu-Ted Su, Wen-Rong Wu,
Kai-Ten Feng, Ching Yao Huang,
fred_lin@mtk.com.tw
stanley_hsu@mtk.com.tw
fstseng@mtk.com.tw
NCTU/MediaTek Inc.
ED905A, 1001 Ta Hsueh Road,
Hsinchu, Taiwan 300, ROC
I-Kang Fu
IKFu@itri.org.tw
NCTU/ITRI
ED922, 1001 Ta Hsueh Road,
Hsinchu, Taiwan 300, ROC
Re:
IEEE 802.16m-07/022, “Call for Comments on Project 802.16m Requirements.”
Abstract
This contribution provides text revision on P802.16m requirement document to confirm with the
latest update to the ITU-R WP8F “IMT-Advanced” requirements.
Purpose
Modify P802.16m requirements document to align with ITU-R WP8F “IMT-Advanced”
requirements.
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 IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole
discretion 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>.
Comments on P802.16m Requirements Document to confirm with
1
2007-7-18
IEEE C802.16m-07/132r2
ITU-R WP8F “IMT-Advanced” Documents
Paul Cheng
MediaTek Inc.
Yuan Pin Lin, Chun Fang Lee, Fan-Shuo Tseng, Chieh Yuan Ho, Chung-Hsien Hsu,
Ta-Sung Lee, Yu-Ted Su, Wen-Rong Wu, Kai-Ten Feng, Ching Yao Huang.
NCTU/MediaTek Inc.
I-Kang Fu
NCTU/ITRI
I.
Introduction
IEEE Project 802.16m aims to develop the new air interface to meet the requirements of “IMT-Advanced”, so
that the air interface defined by IEEE 802.16m standard can be part of the 4G system. In order to make sure the
air interface defined by IEEE P802.16m can satisfy the IMT-Advanced requirements, revising the P802.16m
requirements documents to confirm with the latest update to the ITU-R WP8F “IMT-Advanced” requirements
will be very critical.
II. Text Proposal
---------------------------------------------------------Start of the Text-------------------------------------------------------[Adopt the following text modification to the P802.16m requirements document]
[Remedy #1: Adopt the following modification from line#6, page#11]
6.1 Peak data rate
This section defines the peak data rate achievable between a BS and a MS under ideal conditions.
The minimum peak rate requirement supported by MSs compliant with the 802.16m specification, expressed as
a normalized peak rate (i.e. absolute maximum supported data rate divided by the occupied channel bandwidth)
is specified in Table 1.
Table 1. Normalized peak data rate
Link direction
Normalized peak
rate (bps/Hz)
Downlink (BS->MS)
Uplink (MS->BS)
> 6.5 [5]
> 2.8 [5]
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2007-7-18
IEEE C802.16m-07/132r2
Notes applicable to Table 1:
a) The specified requirements of normalized peak rates are not distinguished by duplex mode. Rather,
100% of radio resources are assumed – for the purposes of computing Table 1– allocable to downlink
and uplink respectively regardless of duplexing mode.
b) Table 1 accounts for overhead due to provisioning of radio resources for essential functions such as
pilots, cyclic-prefix, guard bands and guard intervals.
c) The specified minimum supported normalized peak rates are applicable to all bandwidths specified in
Section 5. For example, for MSs supporting a 20MHz bandwidth, the minimum supportable peak rate
(excluding overhead mentioned above) is > 130[100]Mbps.
[Remedy #2: Add the following text at line#9, page#13]
IEEE 802.16m shall enable the advanced RRM for efficient utilization on radio resources. This may be achieved
by appropriate measurement/reporting, interference management and flexible resource allocation mechanisms.
[Remedy #3: Adopt the following modification from line#15, page#16]
[Note: There is no general agreed 802.16e performance defined in requirement document, it may result in
problems if technical proposals are compared based on different foundation.]
7.1 User throughput
7.1.1 Relative performance
The targets for average user-throughput and cell-edge user throughput of downlink/uplink for data only system
for baseline antenna configuration are shown in Table 6. Both targets should be achievedrelative to
WirelessMAN-OFDMA Reference System performance as per antenna configuration defined 21 above.
Table 6 – Data only system
Metric
Relative throughput
DL data
UL data
(x 802.16e)
(x 802.16e)
Average user throughput
> 2x
> 2x
Cell edge user throughput
> 2x
> 2x
Note that the “cell edge user throughput” is defined as the 5% point of the cumulative distribution function
(CDF) of the user throughput for a given DL:UL ratio (in TDD duplex mode), a given number of users, site-tosite distance, and a given fairness and delay criterion in a fully loaded network with full buffer traffic.
7.1.2 Absolute performance
The targets for average user-throughput and cell-edge user throughput of downlink/uplink for data only system
for baseline antenna configuration are shown in Table 7.
Table 7. Absolute throughput of Data only system
Metric
DL data
3
UL data
2007-7-18
Average user throughput
TBD
IEEE C802.16m-07/132r2
TBD
Cell edge user throughput
TBD
TBD
Note that the “cell edge user throughput” is defined as the 5% point of the cumulative distribution function
(CDF) of the user throughput for a given DL:UL ratio (in TDD duplex mode), a given number of users, site-tosite distance, and a given fairness and delay criterion in a fully loaded network with full buffer traffic.
7.2 Sector capacity
Sector throughput is defined as the total unidirectional sustained throughput (downlink/uplink), excluding MAC
& PHY layer overheads, across all users scheduled on the same RF channel. Sector throughput requirements
must be supported for realistic distributions of users of a fully loaded cell surrounded by other fully loaded cells
using the same RF channel (i.e. an interference limited environment with full frequency reuse).
7.2.1 Relative sector capacity
Table 8–Relative sector throughput (bps/Hz/sector)
Speed
DL
UL
(km/h)
TBD
Speed
>2x
>1.5x
Table 9–Relative VoIP capacity
Capacity
(km/h)
(Active users/MHz/sector)
TBD
>1.5x
[Remedy #4: Modify the following text at line#21 ,page#17]
7.2.2 Absolute sector capacity
Table 10–Sector throughput (bps/Hz/sector)
Speed
DL
UL
(km/h)
b/s/Hz/sector
b/s/Hz/sector
TBD Vehicular
TBD[2]
TBD [2]
High Speed
[2]
[2]
[Remedy #5: Modify the following text at line#15 ,page#18]
4
2007-7-18
Table 12. Mobility Support
Mobility
Low ( 0 – 15 10 km/h)
High (15 10 – 120 km/h)
Highest (120 – 350 km/h)
IEEE C802.16m-07/132r2
Performance
Optimized
Marginal degradation
System should be able to maintain
connection
---------------------------------------------------------End of the Text--------------------------------------------------------
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