hi, Sebastian thx for your time! comments inline:D
On Wed, Apr 27, 2011 at 4:22 PM, Sebastian Kiesel <[email protected]>wrote: > Hi, > > On Wed, Apr 27, 2011 at 09:15:11AM +0800, ?????? wrote: > > hi, everyone: > > > > have the ALTO considered the use cases of wireless, which means how to > make > > the selection of the peers in the wireless environment? > > the ALTO protocols and procedures feature mechanisms that can be > leveraged in a mobile / wireless scenario. IMO there are two issues: > what is IMO stands for? > 1. When a client is moving between different sections of an access > network it may have to find a new ALTO server which is able > to give guidance that is useful at the new client position. > draft-kiesel-alto-3pdisc-05, sec. 1.3 states: > > o A change of the IP address at an interface invalidates the result > of the ALTO server discovery procedure. For instance, if the IP > address assigned to a mobile host changes due to host mobility, it > is required to run the ALTO server discovery procedure for the new > IP address without relying on earlier gained information. > what does the IP address refer to in "it is required to run the ALTO > server discovery procedure for the new IP address without relying on earlier > gained information"? the new IP address of the roaming user which may > allocated by GGSN or wifi AP? however, that allocation process has nothing > to do with the ALTO server discovery. or it is not correct of my > understanding ? > > 2. The actual strategy (algorithm) for selecting peers is out of scope > of the standardization process, as there are many different scenarios > with different constraints and optimization goals (e.g., in a given > mobile access network, is the backhaul capacity an issue or not?). > can i understand "how to make the selection is the issues decided by P2P > application"? > The ALTO client protocol together with a procedure for defining new > Host Characteristics Attributes (cost types) is able to convey the > input for a variety of different selection algorithms. > do you mean the selection algorithms can be self-defined by client itself? > > does this make sense? > > > thanks > sebastian > -- Best wishes, Beijing University of Posts & Telecommunications (BUPT) Zhu Xiao ( 朱潇 ) E-mail: [email protected] mobile:+86 134-8881-9004
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