Transcript IEEE C802.16m-09/0996

Frame Structure for 1/4 Tb in IEEE 802.16m Amendment Working Document
IEEE 802.16 Presentation Submission Template (Rev. 9)
Document Number:
IEEE C802.16m-09_0996
Date Submitted:
2009-04-27
Source:
Yanfeng Guan, Huiying Fang
ZTE Corporation
Voice:
E-mail:
[email protected]
Venue:
Re: Category: AWD comments /Area: Chapter 15.3.3 (Frame Structure)
“Comments on AWD 15.3.3 Frame Structure”
Base Contribution:
None
Purpose:
This contribution proposes the text for frame structure with CP length of ¼ Tb.
Notice:
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Frame Structure for 1/4 Tb
•
Principles in AWD:
–
43 symbols for FDD and 42 symbols for TDD.
–
The number of subframe should be same as the 1/8 Tb and 1/16 Tb.
–
The subframe carrying the SFH should be a type-1 subframe.
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Frame Structure for 1/4 Tb (Cont.)
• TDD/FDD Frame Structure for ¼ Tb
TDD Frame: 5 ms
DL
SF0 (6)
DL
DL
DL
SF1 (5) SF2 (5) SF3 (5)
DL
SF4 (5)
UL
UL
SF5 (5) SF6 (5)
TTG
UL
SF7 (6)
Idle Time
114.286us
Type-2
Subframe
6 OFDM Symbols=0.686ms
S4
S3
S2
S1
S0
S5
S4
S3
S2
S1
S0
Type-1
Subframe
6 OFDM Symbols=0.571ms
Idle Time
DL/UL
SF0 (6)
DL/UL DL/UL DL/UL
SF1 (5) SF2 (5) SF3 (5)
DL/UL
SF4 (6)
DL/UL DL/UL
SF5 (5) SF6 (5)
DL/UL
SF7 (6)
FDD Frame: 5 ms
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Text Proposal for IEEE 802.16m Amendment Working Document
Suggest to add new section to specify the frame structure for the CP length of 1/4Tb
15.3.3.x.x Frame structure for CP = 1/4 Tb
The frame structure for a CP length of 1/4 Tb shall consist of type-1 and type-3
subframes.
For channel bandwidths of 5, 10, and 20 MHz, an FDD frame shall have three
type-1 subframes and five type-3 subframes , and a TDD frame shall have two
type-1 subframes and six type-3 subframes.
In the TDD frame, the first and last subframes within each frame shall be type-1
subframes.
In the FDD frame, the first, fifth, and last subframes within each frame shall be
type-1 subframes.
Figure xxx illustrates an example of TDD and FDD frame structure for 5, 10, and
20 MHz channel bandwidths with a CP of 1/4 Tb. Assuming OFDMA symbol
duration of 114.286 μs and a CP length of 1/4 Tb, the length of type-1 and type-2
subframes are 0.686 ms and 0.571 ms, respectively. TTG and RTG are 114.286 μs
and 85.702 μs, respectively.
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Text Proposal for IEEE 802.16m Amendment Working Document
TDD Frame: 5 ms
DL
SF0 (6)
DL
DL
DL
SF1 (5) SF2 (5) SF3 (5)
DL
SF4 (5)
UL
UL
SF5 (5) SF6 (5)
TTG
UL
SF7 (6)
Idle Time
114.286us
Type-2
Subframe
6 OFDM Symbols=0.686ms
S4
S3
S2
S1
S0
S5
S4
S3
S2
S1
S0
Type-1
Subframe
6 OFDM Symbols=0.571ms
Idle Time
DL/UL
SF0 (6)
DL/UL DL/UL DL/UL
SF1 (5) SF2 (5) SF3 (5)
DL/UL
SF4 (6)
DL/UL DL/UL
SF5 (5) SF6 (5)
DL/UL
SF7 (6)
FDD Frame: 5 ms
TDD and FDD frame structure with a CP of 1/4 Tb (DL to UL ratio of 5:3).
Figure xxx-TDD and FDD frame structure
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