Avoiding duplicated queries in 11aq April 2013 doc.: IEEE 802.11-13/0796 Jan 2014 Avoiding duplicated queries in 11aq Date: 2014-01-20 Authors: Ping FANG, Huawei Ping FANG, Ping FANG, Huawei

April 2013 doc.: IEEE 802.11-13/0426 Jan 2014 Abstract If existing GAS frames are used, when an 11aq-STA wants to find a service, it will send query to APs around it one by one in unicast. Then for APs belong to the same ESS, this will cause duplicated queries to the same service server. And the duplicated queries will be wasted. This contribution discussed this issue and possible optimized options. Ping FANG, Huawei RYU Cheol. ETRI

AP overlap cases Jan 2014 Server/Proxy Query Query AP1 Response STA Ping FANG, Huawei

AP1 and AP2 connect to same Server Jan 2014 Duplicated Queries AP1 and AP2 connect to same Server STA AP1 AP2 Server/ Proxy Query (using unicast GAS Request) Service Query Service Query response Response (using unicast GAS Response) Duplicated query for the same service Query (using unicast GAS Request) Service Query Service Query response Response (using unicast GAS Response) Ping FANG, Huawei

Possible Solutions to Avoid Duplicated Queries Jan 2014 Possible Solutions to Avoid Duplicated Queries Option 1: allowing 11aq-STAs to broadcast GAS frames Need to study if there is any impact on legacy STAs’ behavior Duplicated response could still be there Option 2: 11aq APs indicates if they are connected to the same server/proxy Ping FANG, Huawei

Jan 2014 Straw Poll 1 Do you support that TGaq develop a mechanism to enable a STA to avoid duplicated queries when multiple APs in the same area are connected to the same server/proxy? Yes: No: Need more information: Ping FANG, Huawei

Jan 2014 Straw Poll 2 Do you support allowing broadcasted GAS frames (GAS Request and GAS Response frames) in 11aq? Yes: No: Need more information: Ping FANG, Huawei

Jan 2014 Straw Poll 3 Do you support that 11aq APs indicates if they are connected to the same server/proxy? Yes: No: Need more information: Ping FANG, Huawei