We discussed the following items:
1. The joint
draft proposal:
Preamble_adhoc_structure_v0.1.doc
There was a
long discussion over the proposal, which proved to be very
useful. It is not clear that we have reached a
consensus, however only members from Samsung have not
agreed with the proposal. The agreement is that we will not
change the existing preamble structure in order to maintain backward
compatibility, but introduce a Sync symbol (or postamble) which has a time
domain repetition structure. The Sync symbol is transmitted in
certain interval (the exact interval is to be defined). There are several
different opinions on the location of the Sync symbol, the exact location
is to be defined. This Sync symbol shall be transmitted mandatory by
BS, but it is optional for MSS. It is up to MSS to decide whether it
wants to take advantage of this Sync symbol. The actual
sequence design depends on the outcome of sequence design harmonization.
It shall use whichever sequences chosen for the existing preamble design,
possible different lengths.
Raja proposed
another revision based on this proposal to add group ID in additional to
the common Sync sequence.
Wen Tong will work with
others to provide a revision to reflect today's CC agreement. Samsung
agreed to review the revision. The document combining with the
consensus on sequence design will be used as the first draft for Aug.
17 comment submission.
2. Sequence
harmonization status
We discussed
how to evaluate the sequences. The following are the criteria suggested:
low PAPR, low cross-correlation, complexity, consistency with the existing
preamble sequence. The simulation will use the existing preamble
structure.
Jeff Zhuang agreed
to work with others to generate performance matrices for proposed
sequences before Monday CC. It is agreed to continue offline Email
discussion. We need to work hard on this to reach a consensus by Monday
night.
3. Comment
on "reference signaling" from LGE
Bin-Chul Ihm presented the proposal on "reference signal",
several members objected to use guard band for any other purpose.
There was no support for this proposal. Bin-Chul
Ihm will do further explanation to seek support
before Aug. 17.
4. Next
CC
We agreed to add
another CC to discuss sequence design.
Monday, Aug 16 ---
20:00-22:00 USA pacific time, 12:00 for Seoul, 6:00 for TelAviv, 23:00 for
Ottawa
The conference bridge is:
1+(613)7650160
Pass code:
3958089#