Re: [STDS-802-16] [Preamble] Question about IDCell from the preamble

[JY Chun <jychun03@LGE.COM>]



Hi, Sriram Mudulodu,

 

I'm sorry I don't understand your reply exactly.

 

What's mean 'interference averaging'?

 

I think you say IDcell from preamble is used for doing permutations based on IDcell for data, right?

IDcell used for pilot modulation and IDcell used permutations for data are different.

IDcell info from the preamble is used for pilot modulation and IDCell used permutations for data is default zero at first.

 

Below, there is Yigal's answer to my questions.

 

========================================================================================================

In REVd/D5,
p. 567 "In the first PUSC zone of the downlink (first downlink zone) the default used IDcell is 0."
p.526 "The downlink frame shall start in PUSC mode with IDcell = 0 and no transmit diversity."

1. What is the first PUSC zone?  Does that include FCH, DL/UL-MAP?
>>> Yes, it includes FCH and DL-MAP

2. Why IDcell = 0 in the first PUSC zone?
>>> To facilitate operation with sector reuse <=1 by ensuring that PUSC zone are orthogonal

3. If answer of question 1 is "yes", where or when will IDcell from preamble be used?
>>> IDCell from the preamble is use on the first PUSC zone pilot modulation
====================================================================

Please see it,

 

Thanks,

Best Regards,

JY Chun

 

 

----- Original Message -----

From: Sriram Mudulodu

To: ???

Sent: Wednesday, August 04, 2004 10:37 AM

Subject: RE: [STDS-802-16] [Preamble] Question about IDCell from the preamble

Hi Chun,

 

The suggested reason is for doing permutations based on IDcell for data is for better interference averaging.

They want to have this interference averaging effect for the DLMAP as well. So the only way is to

convey this info about IDcell in the preamble.

 

Yes, we agree the overhead on the receiver is high due to this.

 

Regards,

Sriram

 

---

From: owner-stds-802-16@listserv.ieee.org [mailto:owner-stds-802-16@listserv.ieee.org] On Behalf Of ???
Sent: Monday, August 02, 2004 6:29 PM
To: STDS-802-16@listserv.ieee.org
Subject: [STDS-802-16] [Preamble] Question about IDCell from the preamble

 

Dear Yigal and all,

 

–        In Preamble Adhoc, •it is defined Minimum information carried in preamble are Segment number, CellID.

But I still don't understand why information of IDCell need in the preamble.

 

I knew IDCell from the preamble is use on the first PUSC zone pilot modulation,

but I think overhead is large if it use for only that reason .

 

Are there other important reasons I miss ?

 

Best regurds,

JY Chun

 

 

˚ 。。 ☆ ˚ ★。 。。★ 。 ˚ ☆ 。 。 。 。 ˚ 。。 ☆ ˚ ★。
 Jin-Young Chun
 Research Engineer
 Standardization & System Research Gr.
 Mobile Communication Technology Research Lab.
 Phone: +82-31-450-7903
 Mobile: +82-10-2263-2797
 E-mail: jychun03@lge.com
˚ 。。 ☆ ˚ ★。 。。★ 。 ˚ ☆ 。 。 。 。 ˚ 。。 ☆ ˚ ★。