Figure B.1 represents an example flow diagram for using the QoS framework defined by the MISF. The following terms are used in Figure B.1:
UP Entity: An upper layer entity such as a multimedia application;
MAC-S: The MAC layer of the interface that is currently serving the MN;
MAC-C: The MAC layer of an interface that is not currently serving the MN;
PoA-S: The serving PoA;
PoS-S: The serving PoS.
The MIS_Link_Configure_Thresholds primitive is used to set the application quality of service requirements and make it available to the MISF. These parameters are mapped into media-specific measurements at the MIS layer and then used to configure the link parameter thresholds. While this mapping is not defined by other standards, Table B.1 and Table B.2 provide such mappings. The MIS_Link_Parameters_Report primitive is used to relay link specific measurements back to the MIS user.
Figure B.1—An example flow for setting application QoS requirements
The tables provide mappings of the standard IEEE 802.21 QoS parameters to the access link technology
specific parameters. Table B. 1 is informative and list measurements defined in IEEE Std 802.11 that may be used in computing the QOS performance metrics defined in this document. For IEEE 802.11, a collection of the QoS parameters can be on an individual station measurement basis, since this is a media using a distributed (symmetric) access technology.
MSDU Failed Count (See NOTE) MSDU Multiple Retry Count QoS CF-polls Lost Count
Transmit Stream/ Category Mea- surement Report
Trigger (Option) (only to specific STA)
NOTE—This parameter is most likely to be used to directly derive IEEE 802.21 LinkQoSParameters. See B.3 for example derivations.
Table B.2 and Table B.3 show example mappings for IEEE 802.21 QoS link parameters and other link specific parameters for IEEE 802.16, 3GPP, and 3GPP2. For these technologies control is usually by means of a base station, not an individual station, since the media is controlled using asymmetric access.
Table B.2—QoS parameter mapping for IEEE 802.16 and 3GPP2