IEEE C802.16m-09/1767r1
Project
IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16>
Title
AMS Initial Ranging in Relay
Date
Submitted
2009-08-28
Source(s)
Kanchei(Ken) Loa, Yi-Ting Lin, Jiun-Je Voice: +886-2-66000100
E-mail: loa@iii.org.tw
Jian, Tsung-Yu Tsai, Chun-Yen Hsu
Institute for Information Industry (III)
Re:
P802.16m/D1 Relay
Abstract
This contribution proposes contention based AMS initial ranging in Relay
Purpose
For discussion and approval by IEEE 802.16 Working Group
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Release
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AMS Initial Ranging in Relay
Kanchei(Ken) Loa, Yi-Ting Lin, Jiun-Je Jian, Tsung-Yu Tsai, Chun-Yen Hsu
Institute for Information Industry (III)
Introduction
In this contribution, we propose the procedure of initial ranging when AMS performs initial ranging using
distributed scheduling mode in non-transparent ARS.
Proposed Changes
[Insert the following section 15.x “Contention-based initial ranging and automatic adjustments” :]
15.x Contention-based initial ranging and automatic adjustments
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IEEE C802.16m-09/1767r1
When an AMS performs initial ranging in systems using scheduling ARS, ABS and scheduling ARS shall
perform the following tasks (see Table xxx and Table yyy):
— The scheduling ARS shall monitor the initial ranging region location specified in the S-SFH SP1 IE
broadcasted by itself for receiving ranging preamble.
— If the ARS does not allow access for new AMS, the cell_bar = 1 is set in S-SFH SP1 IE.
— When the ARS detects a ranging preamble on its access link, it shall perform adjustments directly with the
AMS as specified in 15.3.10.3.1 with no interaction with the ABS.
— Once the ARS permit to allow the AMS to enter the network, the ARS shall provide bandwidth on the
access uplink on which the AMS can send an AAI_RNG-REQ containing its MS_Random and MAC
version by inserting a CDMA Allocation A-MAP IE.
— When the ARS receives an AAI_RNG-REQ with an MS_Random and MAC version, it shall either assign
temporary STID to the AMS by sending a AAI_RNG-RSP to the AMS on the AMS’s basic connection
(Table yyy), or request them from the ABS by forwarding the AAI_RNG-REQ containing the MS_Random
and MAC version to the ABS on its basic connection (Table xxx).
— If the ABS receives the AAI_RNG-REQ, it shall assign temporary STID with matching MS_Random to the
AMS by sending a AAI_RNG-RSP to the ARS on the ARS’s basic connection. The access ARS shall
forward the AAI_RNG-RSP to the AMS on the AMS’s basic connection (Table xxx).
The message sequence charts (Table xxx and Table yyy) define the contention-based initial ranging and
adjustment process that shall be followed by compliant AMSs, access ARSs and ABSs.
Table xxx
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IEEE C802.16m-09/1767r1
ABS
ARS
AMS
Time to send the initial
ranging opportunity
Send SFH containing SSFH SP1 IE
SFH
Initial ranging preamble
Receive initial ranging
preamble
Send AAI_RNG-ACK with
Time&Power&Frequency correlations
and ranging slot status = Continue.
AAI_RNG-ACK
Receive AAI_RNG-ACK message
and ranging slot matching sent values.
Adjust Time&Power&Frequency
parameters
Time to send initial ranging
opportunity in RS access link.
Send SFH containing S-SFH SP1 IE
SFH
Initial ranging preamble
Receive initial ranging preamble
If status is success, send AAI_RNGACK with ranging slot status =
Success.
AAI_RNG-ACK
Send A-MAP containing CDMA
Allocation A-MAP IE.
CDMA Allocation A-MAP IE
Receive AAI_RNG-REQ
AAI_RNG-REQ
Identify AMS and its connecting ARS.
Send AAI_RNG-RSP containing temporary
STIDs with RS’s basic connection.
Transmit randomly selected
initial ranging preamble in a
randomly selected ranging slot
from available ranging region
Receive AAI_RNG-ACK message
and ranging slot matching sent values.
AAI_RNG-REQ
Receive AAI_RNG-REQ
Transmit randomly selected
initial ranging preamble in a
randomly selected ranging slot
from available ranging region
Transmit AAI_RNG-REQ
containing MS_random and MAC
version.
If AAI_RNG-REQ has
MS_random and MAC version,
then ARS relays it to ABS with
RS’s basic connection.
AAI_RNG-RSP
Receive AAI_RNG-RSP
Relay the AAI_RNG-RSP to AMS
with MS’s basic connection.
AAI_ RNG-RSP
Receive AAI_RNG-RSP message
with matching MS_random.
Table yyy
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IEEE C802.16m-09/1767r1
ABS
ARS
AMS
Time to send the initial
ranging opportunity
Send SFH containing SSFH SP1 IE
SFH
Initial ranging preamble
Receive initial ranging
preamble
Send AAI_RNG-ACK with
Time&Power&Frequency correlations
and ranging slot status = Continue.
AAI_RNG-ACK
Receive AAI_RNG-ACK message
and ranging slot matching sent values.
Adjust Time&Power&Frequency
parameters
Time to send initial ranging
opportunity in RS access link.
Send SFH containing S-SFH SP1 IE
SFH
Initial ranging preamble
Receive initial ranging preamble
If status is success, send AAI_RNGACK with ranging slot status =
Success.
AAI_RNG-ACK
Send A-MAP containing CDMA
Allocation A-MAP IE.
CDMA Allocation A-MAP IE
Receive AAI_RNG-REQ
4
Transmit randomly selected
initial ranging preamble in a
randomly selected ranging slot
from available ranging region
Receive AAI_RNG-ACK message
and ranging slot matching sent values.
AAI_RNG-REQ
Identify AMS and its connecting ARS.
Send AAI_RNG-RSP containing temporary
STIDs with AMS’s basic connection.
Transmit randomly selected
initial ranging preamble in a
randomly selected ranging slot
from available ranging region
Transmit AAI_RNG-REQ
containing MS_random and MAC
version.
AAI_ RNG-RSP
Receive AAI_RNG-RSP message
with matching MS_random.