Re: [802.21] Limit response message length
Qiaobing Xie wrote:
> Yoshi/Michael,
>
> A few thoughts on this:
>
> 1. The network (I guess this means the IS server) may want to impose
> different size limit depending on the mobile is in unauthenticated or
> authenticated state. Should there be a way the IS server can know
> about this?
[Kenichi Taniuchi]
I think that's possible in the case, if a STA of 802.11 is in State 1,
the IS server can be only AP.
>
> 2. The actual size limit of a query/response exchange will be the the
> lesser of the mobile's self-imposed limit and network imposed limit.
>
> 3. What should be the consequence if the response is over the lesser
> of the mobile limit and network imposed limit? Probably we simply fail
> the query with some error code.
>
> regards,
> -Qiaobing
>
> Michael.G.Williams@NOKIA.COM wrote:
>> Yoshi,
>>
>> Sounds good. Ideally we want a way for the mobile in one packet to
>> query and the network in one response packet give the response back,
>> esp. in unauth state where fast scanning or high mobility are issues,
>> yes? Is piggybacking the details of limit request or enforcement onto
>> that exchange possible?
>>
>> Michael
>>
>> -----Original Message-----
>> From: ext Yoshihiro Ohba [mailto:yohba@tari.toshiba.com] Sent:
>> Friday, December 15, 2006 10:02 AM
>> To: Williams Michael.G (Nokia-ES/MtView)
>> Cc: STDS-802-21@listserv.ieee.org
>> Subject: Re: [802.21] Limit response message length
>>
>> Yes, the network can always impose its own limit if the maximum size
>> specified by the mobile is still too big.
>>
>> Yoshihiro Ohba
>>
>> On Fri, Dec 15, 2006 at 11:16:10AM -0600, Michael.G.Williams@NOKIA.COM
>> wrote:
>>> HI Yoshi,
>>>
>>> That approach could work, as long as the network would also need to be
>>
>>> able to impose/enforce the limit if the mobile's request is too big,
>>> right? That was Tgu's concern I think.
>>>
>>> Best Regards,
>>> Michael
>>>
>>> -----Original Message-----
>>> From: ext Yoshihiro Ohba [mailto:yohba@tari.toshiba.com]
>>> Sent: Thursday, December 14, 2006 8:50 PM
>>> To: Williams Michael.G (Nokia-ES/MtView)
>>> Cc: yohba@tari.toshiba.com; STDS-802-21@LISTSERV.IEEE.ORG
>>> Subject: Re: Limit response message length
>>>
>>> Hi Michael,
>>>
>>> What I am trying to do is to add a new parameter in
>>> MIH_Get_Information.request/indication primitives, which is used for
>>> specifying the maximum size of InfoQueryParameter to be returned in
>>> the corresponding confirm/response primitives, and a new TLV to
>>> carry the parameter in MIH_Get_Information Request message. This
>>> allows the
>>
>>> querier to specify a different MTU for each query so that a smaller
>>> size can be specified for queries performed in State 1 of 802.11.
>>>
>>> We could also define error handling for errors relating to message
>>> size, if needed.
>>>
>>> Regards,
>>> Yoshihiro Ohba
>>>
>>> On Thu, Dec 14, 2006 at 06:03:56PM -0600, Michael.G.Williams@nokia.com
>>> wrote:
>>>> Yoshi,
>>>>
>>>> Thanks for tracking this. If possible, could we email a bit about it
>>
>>>> as it was something .11u was concerned about too.
>>>>
>>>> This value could be something configurable by the network operator
>>>> or mobile node provisioner. It could vary from operator to operator,
>>
>>>> and possibly vary under other circumstances such as authorized vs.
>>>> unauthorized use of the network, or even query to query.
>>>>
>>>> So if the solution here can be something that is discovered, or
>>>> handled via error cases (i.e. the limit is provided in response to
>>>> an attempt to exceed it) that might provide the flexibility and the
>>>> constraints needed.
>>>>
>>>> Best Regards,
>>>> Michael
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: ext Yoshihiro Ohba [mailto:yohba@tari.toshiba.com]
>>>> Sent: Thursday, December 14, 2006 12:06 PM
>>>> To: Williams Michael.G (Nokia-ES/MtView)
>>>> Cc: STDS-802-21@LISTSERV.IEEE.ORG
>>>> Subject: Re: [802.21] Conference call tomorrow Dec 14th 9AM Eastern
>>>> Time US
>>>>
>>>> In today's telconf, I forgot to mention that I am working on:
>>>>
>>>>> 1.1.4. Limiting Response Message Length: Need a
>>>>> mechanism to limit the response length of a query.
>>>> Regards,
>>>> Yoshihiro Ohba
>>>>
>>>>
>>