RE: [802.21] Network Controlled Handover and IS
> It seems both STA controlled and network-controlled scenarios
> may have to considered in 802.21. It may seem unfair to the
> network operator who owns the radio resources in one or more
> technology for allowing its subscribers' STA to make decision
> that may cause misuse of radio resources.
Basically, STA can make a decision to handover only where it has a
subscription to that network.
The resource that is allowed for a STA is managed by the network operator
without question.
For network-controlled inter-technology handover,
network (entity) may continuously gather or monitor the status of the STA
through MIH ES or CS
to make a handover decision for a certain STA, and another STA and ,,,
This is my point. I expect that anyone could solve or lessen my concerning
point.
I think that it may not be a problem that can be solved by reducing
signaling transaction from 10 to 5.
One the other
> hand, a STA that has no subscription or roaming relation to
> the networks in question may make its own decision. It is not
> difficult to have both these mechanisms co-exist.
If a STA has no subscription or roaming relation to networks,
then it cannot access that network. Can you make more clarification on your
point ?
Regards,
Junghoon
> BR,
> Srinivas Sreemanthula
>
> -----Original Message-----
> From: ext Phillip Barber [mailto:pbarber@BROADBANDMOBILETECH.COM]
> Sent: Wednesday, August 24, 2005 4:09 PM
> To: STDS-802-21@listserv.ieee.org
> Subject: Re: [802.21] Network Controlled Handover and IS
>
>
> I must agree with Junghoon Jee. It simplifies matters
> tremendously, and decreases non-productive management and
> control messaging on the air interface dramatically, to have
> the MS play a more intrinsic role in inter-technology
> handover decision (mobility policy engine locus of control).
>
> Thanks,
> Phillip Barber
> Huawei
>
> ----- Original Message -----
>
> From: Junghoon Jee <mailto:jhjee@ETRI.RE.KR>
> To: Stefano M. Faccin <mailto:stefano.faccin@NOKIA.COM> ;
> STDS-802-21@listserv.ieee.org
> Sent: Wednesday, August 24, 2005 11:28 AM
> Subject: RE: Re: [802.21] Network Controlled Handover and IS
>
> Hi Vivek and Stefano,
>
> [Vivek G Gupta]
> Many of the existing media specific technologies already do
> this in some form. For example 802.11k provides access to
> link layer measurements like Bit Rate, BER, etc. that you
> mention above. Other media specific technologies also have a
> provision for something similar.
> Given that, do we need any additional methods/primitives or
> capabilities from 802.21 for above?
>
> [[Stefano] ] I think the answer is completely depending on
> the use scenarios. Let's assume a 3GPP network operator owns
> multiple accesses, such as 802.11 and 802.16 in addition to
> the 3GPP specific access networks. Let's assume the operator
> is interested in having network controlled HO e.g. for load
> sharing or other reasons that require stricter control that
> the one granted by simply controlling the policies in the
> terminal used to decide HO between technologies. In such
> case, it may be difficult in practical implementations to
> have an MME function in the network that relies on existing
> L2 technology-specific to collect the information. it pretty
> much implies a tight IW of the various radio interfaces/ANs
> at L2, that may not be that easy to implement nor that
> acceptable to 3GPP operators/vendors. In such scenario, using
> 802.21 at "L3 and above" to allow reporting of information to
> the MIHF in an MME that is used to control inter-technology
> HO may be an easy and clean way to!
> go. I see this as a very relevant scenario for "L3 and above" MIH.
>
> =>
> [Junghoon]
> I tend to agree about the scenario that Stefano mentioned as
> a general application of MIH.
> However, I have some concern regarding the network-initiated
> inter-technology handover.
> To support not one or two mobile terminals, overloading of
> MIH _handover_ control entity by enormous MIH events and commands...
> IMO, it would be better to let a mobile terminal have a brain
> about inter-technology handover decision.
>
>
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