IEEE P802.11 Wireless LANs TGax Coexistence Assurance Document Comments Date: 2018-09-05 Author(s): Name Affiliation Address Phone Email Eldad Perahia HPE eldad.perahia@hpe.com CID Comment Proposed Change Resolution 16876 802.19 comment Change to: "The Rejected from Timothy traditional Harrington: IEEE mechanisms for This is not a comment on the 802.15.4 HRP UWB 802.11 devices to amendment, however with respect to the CA and LRP UWB PHYs coexist with document: operate in the 6 GHz devices is band. Coexistence clear channel The IEEE 802 has not been assessment (CCA). LMSC OPERATIONS MANUAL states as characterized or However, traditional follows "The CA document shall address analyzed with respect CCA techniques may coexistence with all relevant approved IEEE to 802.15.4 HRP not be adequate to 802 LMSC wireless UWB and LRP UWB sense UWB IR standards specifying devices for unlicensed which use Impulse radios transmitting at operation. The WG should consider other Radio (IR) -41.3 dBM. Analysis specifications in their identified target modulation. Standard of sensing IR UWB band(s) in the CA document." 2.4 GHz and 5 GHz transmissions at standard CCA will 7.125 GHz must 802.11 coexistence with non-802.11 not sense low power performed." systems is addressed in Section 3 of the CA IR transmissions 6 document. There is no LMSC requirement GHz band as IEEE for analysis or simulation or testing. 802.15.4 UWB. Therefore CA document has been amended to must be acknowledge UWB with the relevant tested and analyzed regulations. Refer to
IEEE P802.11 Wireless LANs TGax Coexistence Assurance Document Comments Date: 2018-09-05 Author(s): Name Affiliation Address Phone Email Eldad Perahia HPE eldad.perahia@hpe.com CID Comment Proposed Change Resolution 16876 802.19 comment from Timothy Harrington: IEEE 802.15.4 HRP UWB and LRP UWB PHYs operate in the 6 GHz band. Coexistence has not been characterized or analyzed with respect to 802.15.4 HRP UWB and LRP UWB which use Impulse Radio (IR) modulation. Standard 2.4 GHz and 5 GHz standard CCA will not sense low power IR transmissions 6 GHz band as IEEE 802.15.4 UWB. Therefore must be tested and analyzed Change to: "The traditional mechanisms for 802.11 devices to coexist with devices is clear channel assessment (CCA). However, traditional CCA techniques may not be adequate to sense UWB IR radios transmitting at -41.3 dBM. Analysis of sensing IR UWB transmissions at GHz must performed." Rejected This is not a comment on the amendment, however with respect to the CA document: The IEEE 802 LMSC OPERATIONS MANUAL states as follows "The CA document shall address coexistence with all relevant approved IEEE 802 LMSC wireless standards specifying devices for unlicensed operation. The WG should consider other specifications in their identified target band(s) in the CA document." 802.11 coexistence with non-802.11 systems is addressed in Section 3 of the CA document. There is no LMSC requirement for analysis or simulation or testing. CA document has been amended to acknowledge UWB with the relevant regulations. Refer to 7.125
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