Providing QoS through current link layer primitives
Hi all,
The current version of the draft specifies two primitives to report
current link quality parameters:
- Link_Parameters_Change
- MIH_Link_Parameters_Report
These two primitives could be valuable in order to maintain a certain
QoS with the current PoA (Point of Attachment), as well as to guarantee
that the next potential PoA after a handover will be able offer the
minimum QoS required.
The text offers four example parameters to indicate the link quality:
Link Speed, Link Bit Error Rate, Link Frame Loss Rate before
retransmission and Link Received Signal Strength. Nevertheless, more
parameters will be needed to guarantee the QoS, for instance to address
load balancing issues among different PoAs of the same network or to
avoid a handover decision towards a congested PoA. (As an example, see
some work in progress related to network initiated handovers in the
framework of the European project Daidalos:
http://www.ietf.org/internet-drafts/draft-melia-mobopts-niho-ps-00.txt).
How is this aspect of the text expected to be solved? Will the list of
link layer parameters be left open, or on the contrary, will it be
closed to a certain number of parameters?
Best regards,
Albert