1. doc.: IEEE 802.11-08/1468r0 Submission Dec 2008 Ashish Shukla, Marvell SemiconductorSlide 1 ERP Protection in IEEE 802.11s Mesh Network Date: 2008-12-12 Authors:

2. doc.: IEEE 802.11-08/1468r0 Submission Dec 2008 Ashish Shukla, Marvell SemiconductorSlide 2 ERP Protection in Mesh Network A Mesh Network may include NonERP Mesh STA in MBSS and or may overlap with other BSSs containing NonERP STAs. ERP IE’s Use_Protection, NonERP_Present and Barker_Preamble_Mode bits definitions are not clear (missing) for Mesh STA. It is not clear in 802.11s how to achieve ERP protection in Mesh Network?

3. doc.: IEEE 802.11-08/1468r0 Submission Dec 2008 Ashish Shukla, Marvell SemiconductorSlide 3 ERP Protection in Mesh Network (Proposal) Include ERP IE in mesh beacon and Peer Link Management Action frame. Extend the definition of ERP IE in clause 7.3.2.13 as follows. –The NonERP_Present and Use_Protection bits shall be set to 1 when a one hop NonERP Mesh STA establishes peer link with this Mesh STA transmitting ERP IE. –The Use_Protection bit may be additionally set to 1, but not limited to, when Mesh STA detects overlapped presence of either of NonERP BSS, NonERP IBSS, or NonERP MBSS. A beacon frame is received from Mesh STA where the supported rate set contains only clause 15 or clause 18 rates. A management frame (excluding probe request) is received where the supported rate set includes only clause 15 or clause 18 rates.

4. doc.: IEEE 802.11-08/1468r0 Submission Dec 2008 Ashish Shukla, Marvell SemiconductorSlide 4 ERP Protection in Mesh Network (Proposal) Cont’d Extend the definition of ERP IE in clause 7.3.2.13 as follows (cont’d). –The Barker_Preamble_mode bit shall be set to 1 if there is a one hop NonERP Mesh STA neighbor that that does not support short preamble and has established peer link with this Mesh STA transmitting ERP IE.

5. doc.: IEEE 802.11-08/1468r0 Submission Dec 2008 Ashish Shukla, Marvell SemiconductorSlide 5 Conclusion It is not clear how to achieve ERP protection in 11s Mesh Network. The Use_Protection, NonERP_Present and Barker_Preamble_Mode bits definitions in the ERP IE should be extended in the Mesh STA context as described in this proposal. Inclusion of ERP IE into mesh beacon and Peer Link Management Action frame may help Mesh STA to implement ERP protection in Mesh Network.

6. doc.: IEEE 802.11-08/1468r0 Submission Dec 2008 Ashish Shukla, Marvell SemiconductorSlide 6 Straw Poll Do you think that ERP protection in 11s mesh network is not clear? –Yes No Abstain Do you think that 11s should define new rules to integrate ERP protection into 11s draft? –Yes No Abstain Do you think that solutions described in this proposal address ERP protection problem and should be included in 11s draft? –Yes No Abstain