Transcript IEEE C802.16m-08/389r3

IEEE C802.16m-08/389r3
Project
IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16>
Title
Uplink Resource Allocation
Date Submitted
2008-05-05
Source(s)
Jia Lin, Xin Chang, Juejun Liu, Hongjie Si, Jianmin Lu
Huawei
Re:
IEEE 802.16m-08/016r1: Call for Contributions on Project 802.16m System Description Document (SDD).
Target topic: “Uplink Physical Resource Allocation Unit”.
Abstract
This contribution proposes Uplink Resource Allocation for IEEE 802.16m system.
Purpose
For discussion and approval by TGm
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 contained herein.
Release
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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.
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E-mail: [email protected]
IEEE C802.16m-08/389r3
Uplink Resource Allocation
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•
•
•
•
•
UL resource unit
UL resource unit definition
Localized RU and distributed RU multiplexing
UL channelization and mapping rule
UL subcarrier to resource unit mapping
FFR grouping
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UL resource unit
• UL resource units includes UL distributed
resource unit (DRU) and UL localized resource
unit (LRU). UL DRU and LRU are multiplexed in
FDM fashion in each sub-frame.
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UL resource unit definition
Logical
• The resource unit (RU) consists of 108
structure
subcarriers, 18 subcarriers over 6 OFDM
symbols in UL subframe.
• Each UL RU is divided into 3 tiles, which
contains 6 contiguous subcarriers by 6
OFDM symbols.
Frequency
• UL DRU includes 3 distributed tiles over
the entire frequency band.
• UL LRU includes 3 adjacent tiles in
frequency domain.
tile
Time
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Localized RU and distributed RU
multiplexing
• As shown in the figure, UL Control
resource, Localized resource and
Distributed resource occupy
different logical resource of subframe.
• Control resource contains of
resource for CQI, HARQ ACK,
Ranging, etc.
Control resource
Logical
DRUs
Data DRUs
Control resource
frequency
Data LRUs
Logical
LRUs
symbols
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UL Channelization
• Within a sub-frame, the whole bandwidth is
divided into several clusters.
• Further, within a cluster, bandwidth is divided
into multiple frequency bands, each of which is
called as sub-zone.
• Localized resource is located in the LRU subzones; Distributed resource is located in the
DRU sub-zones.
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UL resource mapping rule
Mapping
•
•
•
•
When mapping of UL Localized
resource and distributed resource,
Localized resource is located in the
Distributed
LRU sub-zones; Distributed
resource
resource is located in the DRU subzones.
Localized resource and Distributed
resource occupy different frequency
bands (sub-zones) within a subframe.
Titles of DRU are located in DRU Localized
resource
sub-zones of different clusters in
sub-frame.
LRU is formed from contiguous
physical tiles.
Physical
resoruce
Logical
resoruce
DRU sub-zone 0
cluster 0
LRU sub-zone 0
DRU sub-zone 1
cluster 1
LRU sub-zone 1
LRU
cluster 2
tile of DRU0
tile of DRU1
cluster 3
tile of DRU2
tile of DRU3
tile of DRU4
cluster 4
control
resource
DRU sub-zone 5
cluster 5
LRU sub-zone 5
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UL subcarrier to resource unit mapping
As shown in slide 9, uplink subcarrier to resource unit mapping is broken down into the
following steps:
1.
PRUs are mapped to permuted PRUs according to predefined permutation/mapping
rule which are for distributed resource and localized resource within the entire
frequency band. The permuted PRUs are divided into distributed resource and
localized resource, and are renumbered. For the localized resource, PRU can be
directly mapped to a permuted PRU. For distributed resource, multiple tiles in
physical resource can be mapped to a permuted PRU according to predefined
permutation/mapping rule for distributed resource.
2.
Permuted PRUs of distributed resource and localized resource are arranged into
multiple frequency partitions, e.g., FFR groups. Each frequency partition contains of
multiple Permuted PRUs that are from distributed resource and/or localized resource.
3.
In each frequency partition, its Permuted PRUs are mapped to the logical resource
units.
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Logical
resoruce
0
1
2
3
4
...
Mapping
FFR
groups
FFR
grouping
DRUs of
group 0
FFR
group0
Localized
RUs of
group 0
DRUs of
group 1
Distributed
and
Localized
resource
Permutation
Physical
resource
PRU 0
Distributed
permuted
PRU
PRU 1
cluster 0
Distributed
resource
cluster 1
Localized
permuted
PRU
cluster 2
FFR
group1
Localized
RUs of
group 1
Localized
resource
cluster 3
DRUs of
group 2
cluster 4
FFR
group2
Localized
RUs of
group 2
cluster 5
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FFR grouping
• For FFR grouping, logical resource of sub-frame can be
divided into multiple FFR groups.
• Each FFR group is composed by multiple logical RUs
which are Localized RUs (LRUs) and /or DRUs. The
granularity unit of FFR group is logical RU.
• Resource of FFR groups are orthogonal each other in
logical resource. After mapping in physical resource,
physical resource of different FFR groups are still
orthogonal each other.
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Proposed text
Insert following text into SDD section 11 in IEEE 802.16m-08/003r1
Section 11.x.1Physical and Logical resource unit
The physical resource unit (PRU) consists of 108
subcarriers, 18 subcarriers over 6 OFDM symbols in UL
subframe. Each UL PRU is divided into 3 tiles, which
contains 6 contiguous subcarriers by 6 OFDM symbols.
Section 11.x.1.1 Distributed resource unit
UL DRU includes 3 distributed tiles over the entire
frequency band.
Section 11.x.1.2 Localized resource unit
UL LRU includes 3 adjacent tiles in frequency domain.
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Proposed text
Insert following text into SDD section 11 in IEEE 802.16m-08/003r1
Section 11.x.2 IEEE802.16m uplink channelization and resource
mapping
Section 11.x.2.1 Multiplexing of Distributed and Localized
resource
802.16m should support multiplexing of Localized resource and
Distributed resource in FDM fashion in each sub-frame of uplink.
Localized resource unit (LRU) can be used for frequency-selective
scheduling. LRU is formed from contiguous physical tiles.
Distributed Resource unit (DRU) can be used for frequency diversity
scheduling. DRU consists of tiles that are spread over sub-zones or
entire bandwidth.
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Proposed text
Insert following text into SDD section 11 in IEEE 802.16m-08/003r1
Section 11.x.2.2 UL subcarrier to resource unit mapping
Resource mapping in the uplink is performed in a frequency division multiplexing (FDM)
manner. The process of downlink subcarrier to resource unit mapping is broken down
into the following steps:
1. PRUs are mapped to permuted PRUs according to predefined permutation/mapping
rule which are for distributed resource and localized resource within the entire
frequency band. The permuted PRUs are divided into distributed resource and
localized resource, and are renumbered. For the localized resource, PRU can be
directly mapped to a permuted PRU. For distributed resource, multiple tiles in
physical resource can be mapped to a permuted PRU according to predefined
permutation/mapping rule for distributed resource.
2. Permuted PRUs of distributed resource and localized resource are arranged into
multiple frequency partitions, e.g., FFR groups. Each frequency partition contains of
multiple Permuted PRUs that are from distributed resource and/or localized resource.
3. In each frequency partition, its Permuted PRUs are mapped to the logical resource
units.
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