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Re: [802.21] QoS resources (throughput) issue in Query and Commit HO phases



Pedro Miguel Neves,

Researching the missing pieces from Draft 7.0 to the current D14.
The following comment (456) was received against draft 7 during the first sponsor ballot process. 
This explains the removal of throughput from the QOS_LIST ( in order to satisfy a disapproved NO vote comment).
Thus throughput did not exist in Draft 8.0 forward to D14.0.

David Cypher
========================================
At 06:09 AM 11/10/2008, Pedro Miguel Neves wrote:
Dear All,
 
I am currently working on seamless mobility mechanisms & IEEE 802.21 and I have a question related with the IEEE 802.21 query and commit phases of the handover.
 
In order to query the candidate access technology, the MIH_MN_HO_Candidate_Query message should carry the required QoS resources. Likewise, the MIH_MN_HO_Commit message should also carry the QoS resources to establish the reservations in the selected candidate access technology. Nevertheless, in version 14 of the draft, the QoSResourceRequirements parameter (QOS_LIST Data Type), present in both messages, does not indicate the throughput value parameter. Instead, is carries only jitter, delay and packet loss info, as follows: (as depicted in Table F.9 - page 241 of the draft v14):
SEQUENCE(NUM_COS_TYPES, LIST(MIN_PK_TX_DELAY), LIST(AVG_PK_TX_DELAY), LIST(MAX_PK_TX_DELAY), LIST(PK_DELAY_JITTER), LIST(PK_LOSS_RATE) ) à Throughput is missing
 
Therefore, how is the throughput value parameter sent to the candidate access technologies? Is there any other parameter carrying this info?
 
Moreover, in previous versions of the draft, this information was included in the QOS_LIST data type (e.g. v07):
SEQUENCE(NUM_QOS_TYPES, THROUGHPUT, PACKET_ERROR_RATE, LIST(COS_MIN_PACKET_TRANSFER_DELAY), LIST(COS_AVG_PACKET_TRANSFER_DELAY), LIST(COS_MAX_PACKETTRANSFER_DELAY), LIST(COS_PACKET_DELAY_JITTER), LIST(COS_PACKET_LOSS_RATE))
 
Can you please clarify this issue?
 
Thanks in advance for your help and kindness.
 
Best Regards,
Pedro Neves

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