IEEE C802.16j-07/557
Project
IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16>
Title
HARQ RS error report header
Date
Submitted
2007-11-08
Source(s)
Junichi Suga
Michiharu Nakamura
E-mail: suga.junichi@jp.fujitsu.com
Fujitsu
Re:
This is in response for comment #169 on P80216j/D1
Abstract
This contribution suggests to modify the HARQ RS error report header on P80216j/D1.
Purpose
Review and adopt
Notice
Release
Patent
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HARQ RS error report header
Fujitsu
Problem
The HARQ RS error report header is defined in section IEEE802.16j/D1. However, the current HARQ RS error
report header can report the status of only first 14 HARQ sub-bursts. This contribution proposes the
modification of this header to cover the status of all HARQ sub-bursts.
Proposed Remedy
To cover the status of all HARQ sub-bursts, the sub-burst offset which indicates the location of HARQ subburst is added in the current header and the length of DL HARQ ACK Bitmap is reduced.
1
IEEE C802.16j-07/557
Specification changes
Type = 1(1)
EC = 1(1)
HT = 1(1)
[Modify Figure 35e and Table 19e]
Extended
Type = 2 (3)
Frame Number
LSB (4)
DL HARQ ACK Bitmap
MSB
Sub-burst Offset (6)
DL HARQ ACK Bitmap LSB (8)
CID MSB (8)
CID LSB (8)
HCS (8)
Figure 35e – HARQ RS error report header format
Table 19e – Description of fields in HARQ RS error report header
Name
DL HARQ ACK/NAK bitmap
Length
(bit)
14 8
Frame Number
4
Sub-burst offset
6
CID
HCS
16
8
Description
RS transmits ACK/NAK Bitmap of DL HARQ data of previous
frame. The order of Bitmap from MSB to LSB follows the order
of DL HARQ sub-burst
Least significant 4 bits of frame number where the DL HARQ
burst is received by the RS
Indicates the number of DL HARQ sub-burst from the first DL
HARQ sub-burst on Frame indicated by Frame Number.
Basic CID of the RS
Header Check Sequence (same usage as HCS entry in Table 5).
2