Support of Downlink High Reliability and Uplink High Data Service
Document Number:
IEEE C802.16n-11/0090r5
Date Submitted:
2011-05-19.
Source:
Liru Lu (Alina), Xin Zhang, Masayuki Oodo, Ming-Tuo Zhou, Hoang Vinh Dien, Hiroshi Harada
National Institute of Information and Communications Technology
*<http://standards.ieee.org/faqs/affiliationFAQ.html>
E-mail:
liru@nict.com.sg
Re:
Call for contributions for 802.16n AWD
Base Contribution:
IEEE C802.16n-11/0090
Purpose:
To discuss and adopt the proposed text in the 802.16n draft Text
Notice:
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
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Introduction
• PPDR(Public Protection and Disaster Recovery) is one of main applications
of HR-network
• High reliability of network connection
• Mobility support
• Uplink heavy data service (>7Mbps for high definition TV)
• Limitation of existing OFDMA PHY for PPDR application
• Uplink transmission rate < 5.5Mbps
• Poor data link quality for downlink transmission with channel
estimation
• The OFDMA symbol structure with modified pilot symbol assignment for
802.16-2009 based PHY system is proposed to fulfill the requirements of
PPDR application
Pilot Symbol Assignment
802.16-2009 Pilot Symbol Pattern (Mode 1)
Revised Pilot Symbol Pattern (Mode 2)
Simulation Parameters
•
OFDMA
•
FFT size 1024
•
CP length: 22.9 µs
•
Frame length: 10 ms
•
Channel bandwidth 5 MHz
•
Channel propagation model(PBB channel model measured at NUMAZU city)
•
½ Convolutional Code (K=7)
•
16 QAM
OFDMA 16QAM BER Performance
Mode 1: 802.16-2009 OFDMA Pilot Pattern
Mode 2: Revised OFDMA Pilot Pattern
FFT 1024, channel bandwidth 5MHz, Convolutional Code ½ (K=7)
PBB channel model measured at NUMAZU city
Proposed Text
Refer to IEEE C802.16n-11/0090r4