IEEE P802.11 Wireless LANs Clause 8.4.2.172 Comment Resolutions 2 Date: 2015-08-24 Author(s): Name Affiliation Address Phone email SK Yong Apple Inc CID Commenter Clause Page (C) Line (C) Type of Comment Assignee Comment Proposed Change Lei Wang 10 23 T SK Yong What's the usage of the Advertisement ID? Searched the entire 11aq/D1.0 doc, did not find any descriptions about it, except for the line 23 on page 10. In addition, within one AP, do we really need a 4-byte Advertisement ID? Please specify how the Advertisement ID is used. Also, please check if it really needs to be of 4 bytes long. Filip Mestanov 10 10 E SK Yong "The Service Advertisement element is included in the Probe Response returned by the AP in response to a Probe Request from a non-AP STA" Change to "The Service Advertisement element is included in a Probe Response frame returned by the AP in response to a Probe Request frame from a non-AP STA" Filip Mestanov 10 23 T SK Yong Why is the "Advertisement ID" a 4 octed value? Do we need so many octets? Reduce the size of the Advertisement ID to 2 octets. Stephen McCann 10 23 T SK Yong What is the "Advertisement ID" as it is not defined anywhere. It appears to be similar to a service name. Create some text to define "Advertisment ID" Jing-Rong Hsieh 10 23 T SK Yong "The Advertisement ID field is a 4-octet unsigned integer assigned by the AP." 4-octet seems to be 2 octets for 65536 services should be enough. 1
too many for the services advertised by the AP. Xiaofei Wang 10 23 T SK Yong The Advertisement ID field usage is not described. Is it meant to be random or each value has certain meaning? Please clarify the meanings of the values in the Advertisement ID field. MARC 10 9 T SK Yong The description when to send a Service Advertisement element in a Probe Responses looks as if a Probe Response is sent for every Probe Request received and that contains a matching Service Hash. TGai is trying to reduce the number of probe responses is is likely to be used in conjuction with the features that TGaq introduces. Sending accumulated Probe Responses in case a requesting STA is a would result in better performance. Change "The Service Advertisement element is included in the Probe Response returned by the AP in response to a 10 Probe Request from a non-AP STA that has one or more matching Service Hashes." to The Service Advertisement element is included in a Probe Response returned by the AP in response to Probe Requests from one or several non-AP STA that have one or more matching Service Hashes. Note "the" --> "a" & plurals Also, enhance TGai changes made to Cls. 10.1.4.3.5 to allow for
"culmulative" Probe Responses containing culmulative information in one Service Advertisement element if the requesting STAs are FILS-STAs. Stephen McCann 10 27 T SK Yong Why is the current status of the service useful? It's telling the STA that the network supports a service which is unavailable. As this is for network selection, I don't think this is necessary. Remove or change the Service Status behaviour Yunsong Yang 10 9 T SK Yong This paragraph seems to describe procedural bahaviors and is not related to the element content or format. Delete the first sentence (for duplication) and move the second sentence to the end of the second paragraph in 10.25.3.4.3 (Solicited PAD procedure). Joseph Levy 10 9 T SK Yong The sentences: "The Service Advertisement element is included in the Probe Response returned by the AP in response to a Probe Request from a non-AP STA that has one or more matching Service Hashes. For each matching Service Hash, the AP includes a corresponding Basic Service Information Descriptor." is confusing and not necessary to define the element. It is describing when the element is used and behavior should not be described in section 8. Delete the sentences and move this information to section 10 if not already adequately captured there. Richard Roy 10 19 T SK Yong Service status is not a useful concept in the context of this standard. Either the service is available or it is not. Inclusion of the Service Hash in any information Eliminate Service status from the document. Add necessary text describing how service become "unavailable".