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Re: [STDS-802-16] 3GPP TSG SA liaison statement to 802.16



Hello Vivek,

Please find the comments inline:

 

3) Is there a preference for handover direction or is the requirement for equal performance in both directions (i.e. bidirectional handover)?

IEEE 802.16 prefers to have bidirectional handovers with equal performance to the extent possible. IEEE 802.16 plans to use 802.21 mechanisms for handovers with other external networks.

Junghoon> The suggested last sentence seem to imply that the use of IEEE 802.21 mechanism in IEEE 802.16 is still on the planning stage. 

However, as many of us already know, the 802.21's work is already incorporated to the IEEE 802.16g. Therefore, I think we need more clarify the last sentence if we want to mention about the IEEE 802.21 here.

 

4) If available, are you able to provide an expected timeline for completion of this activity from IEEE 802.16 perspective?

IEEE 802.16e standard was completed in 2006. IEEE 802.16m is in initial stages of development and the current expected completion timeline is towards the end of 2009.

Junghoon> We can add the stage of IEEE 802.21's work.

 

6) What is the expected interruption time for handover between the technologies?

The intra-technology handovers in IEEE 802.16 meet the performance requirements of real time multimedia and VoIP applications. For intra-technology handovers IEEE 802.16 believes that the expected interruption time should not exceed [100 ms] for real time services.

It is desirable to minimize handover interruption time for inter-technology handovers as much as possible to satisfy service continuity.

Junghoon> It seems that they want to have specific interruption time for inter-technology handover. Is there any one we can suggest this number?

 

BR,

Junghoon

 

----- Original Message -----
From: "Gupta, Vivek G" <vivek.g.gupta@INTEL.COM>
To: <STDS-802-16@listserv.ieee.org>
Sent: Monday, April 16, 2007 12:02 AM
Subject: Re: [STDS-802-16] 3GPP TSG SA liaison statement to 802.16

>
> Dear Roger,
>
> Thanks for notifying us of this liaison from 3GPP.
> For 802.21 members I have placed the LS on 802.21 web site at:
>
http://www.ieee802.org/21/doctree/2007-05_meeting_docs/L80216-07_022.pdf
>
> Also I have created an initial response for this LS which we plan to
> submit to 802.16 for consideration in their May meeting:
>
http://www.ieee802.org/21/doctree/2007-05_meeting_docs/C80216-07_0xxx.do
> c
>
> We shall also plan on discussing this further within 802.21 as well.
>
> Kind Regards
> -Vivek
>
>> -----Original Message-----
>> From: Roger B. Marks [mailto:r.b.marks@ieee.org]
>> Sent: Friday, April 13, 2007 4:38 PM
>> To: Gupta, Vivek G
>> Cc: dot16; Williams Michael G.
>> Subject: 3GPP TSG SA liaison statement to 802.16
>>
>> Dear Vivek,
>>
>> The IEEE 802.16 Working Group has received a liaison statement from
>> 3GPP TSG SA entitled "Mobility interworking between 3GPP and WiMAX
>> systems":
>>   <
http://ieee802.org/16/liaison/docs/L80216-07_022.pdf>.
>>
>> Much of the statement appears applicable more to 802.21 than to
>> 802.16. Therefore, perhaps you would bring it to the attention of the
>> 802.21 WG.
>>
>> I would prefer for 802.16 to generate a response at its upcoming
>> meeting, from 7-10 May <
http://ieee802.org/16/meetings/mtg49>. I know
>> that 802.21 meets the following week.
>>
>> My suggestion is for 802.16 to prepare and submit a response that may
>> address some points in the statement but refers to 802.21 as the
>> primary contact point for interworking. This would provide an
>> opportunity for 802.21 to prepare a separate response when it meets.
>>
>> Should you have suggestions regarding 802.16's response, feel free to
>> submit them as a contribution to the 802.16 WG.
>>
>> Regards,
>>
>> Roger