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Re: [STDS-802-16] scanning..

Hi, All
 
1. DCD & UCD must be sent periodically using constant according to Table 342.
2. DL-MAP, UL-MAP shall be sent whenever the maps are changed.(See 8.3.5.1)
In fact, DCD & UCD are the specifications of the channel(time and frequency).
DL-MAP, UL-MAP are chanel assignment structure and they are more adaptive
to the change of service Qos. If you see that  "Lost DL-MAP Interval" is shorter
than DCD Interval, you may get some idea.
 
OK?
----- Original Message -----
Sent: Thursday, August 17, 2006 2:31 PM
Subject: [STDS-802-16] scanning..

Hi all,

I have some doubt in scanning and obtaining UL parameters in SS.

 

In 802.16-2004 STD page no 173 under,

 

6.3.9.4 Message flows during scanning and uplink parameter acquisition

 

It’s given how the BS generates UCD, DCD, DL-MAP, UL-MAP messages at period interval within the range defined in table 342 in STD and the above said message flow is described in table 114.

 I will come to my question now; when the DL period starts whether the DL burst-1 should contain all the control information (UCD, DCD, DL-MAP and UL-MAP) or will it contain only DL-MAP and UL-MAP.

To be clear when every time the DL period starts, the BS should transmit all the control messages (UCD, DCD, DL-MAP and UL-MAP) in the DL burst-1 frame????

 

I was confused after seeing the table 114 in the STD. It’s given that clock time to send DL-MAP message comes often when compared to other control messages.

 

Plz clear my doubt.

 

Thanks in advance.

 

Regards

Vasanth