RE: [802.21] Network Controlled Handover and IS
Some comments below.
-----Original Message-----
From: stds-802-21@ieee.org [mailto:stds-802-21@ieee.org] On Behalf Of zze-Seamless PERESSE M ext RD-RESA-REN
Sent: Thursday, August 25, 2005 5:48 AM
To: STDS-802-21@listserv.ieee.org
Subject: [802.21] Network Controlled Handover and IS
Hi Vivek and all,
Some comments on your first and second points:
-----Message d'origine-----
De : Gupta, Vivek G [mailto:vivek.g.gupta@INTEL.COM] Envoyé : jeudi 25 août 2005 12:13 À : STDS-802-21@listserv.ieee.org Objet : Re: [802.21] Network Controlled Handover and IS
1] Measurements type dynamic info:
As mentioned earlier different access technologies already provide these in some form (especially those that already support intra-mobility, since the same measurements are required in those cases as well).
[[MP]] This is not sufficient if we want to achieve a control of radio ressources in an MME in the network (not located on the access network). The MME should be able to gather measurements, so L3 must be used, not only L2. However, we can use the facilities provided by some L2 to "extract" needed information for the MIH:
[Vivek G Gupta]
As long as relevant information is available using L2 or L3 becomes more of a packaging issue.
As far as controlling resources is concerned we have talked about this in length before. Different networks have different ways of managing resources. Some are more managed than others. 802.21 cannot change fundamental behavior of existing networks.
[[MP]]For example, 11k defines new primitives to get measurement reports (among other info) from either a STA or an AP. I guess this measurement can be done remotely and locally as well. This process takes place at the Link Layer. Fortunately, indications such "MLME-MREPORT.indication" are available to upper layers (such as MIH). This indication contains measurement reports and could be used by the MIH to do a Measurement Report (via an Event maybe) to an MME in the network via L3.
[Vivek G Gupta]
Sure that's one way of doing this, and why cannot you do this even today without IEEE 802.21? So what's new that is required from 802.21?