The meeting was called to order by the Chair Volker Jungnickel (Fraunhofer HHI). The committed discussed the comments submitted against the Draft1 document (doc. Resolutions are contained in a revised documents 15-18/0001r0). doc. 15-18/0001rx uploaded onto Mentor. The committee was discussing what the purpose of the nonbeacon-enabled OWPAN is in the text. It was explained that this was is an optional mode For a non-beacon-enabled network, there is no superframe structure and it could be a suitable place to introduce the polling-algorithm proposed by pureLiFi. The committee discussed the comments on the removal of the “indirect transmission” from the text. There was a suggestion that the mode can be useful for certain scenarios, therefore it should be maintained but the committee should rather investigate the integration of a method in the MAC. “direct transmission” This is effectively addressed in the Contention-Free Period. There was a discussion on the need to keep the GTS deallocation mechanism that automatically defragments the contention free period to provide a contiguous allocation of resources. The argument for keeping it is that it saves energy from a coordinator perspective by ensuring transmission when the coordinator is turned on as well as saving signaling for allocation/deallocation of different users. The argument for removing it is that it might make it more difficult to create a scheduling system where the resources blocks (GTS) from overlapping coordinators are positioned to be orthogonal to each other to minimize interference. There was a discussion on the need for the period of the super-frame. “Inactive” It is not clear what the advantage of having an in the super frame “inactive” part is. The meeting was recessed until AM2. Meeting #4, Tuesday AM2 (10:30 12:30) – Attendees: Volker Jungnickel (Fraunhofer HHI) Li Qiang (Huawei) Mohamed Abdullah (HBQ) Mohammad Noshad (VLNComm) Ryan Mennecke (JHU-APL) Nikola Serafimovski (pureLiFi)
The meeting was called to order by the Chair Volker Jungnickel (Fraunhofer HHI). The committed discussed the comments submitted against the Draft1 document (doc. 15-18/0001r0). Resolutions are contained in a revised documents doc. 15-18/0001rx uploaded onto Mentor. The committee was discussing what the purpose of the nonbeacon-enabled OWPAN is in the text. It was explained that this was is an optional mode For a non-beacon-enabled network, there is no superframe structure and it could be a suitable place to introduce the polling-algorithm proposed by pureLiFi. The committee discussed the comments on the removal of the “indirect transmission” from the text. There was a suggestion that the mode can be useful for certain scenarios, therefore it should be maintained but the committee should rather investigate the integration of a “direct transmission” method in the MAC. This is effectively addressed in the Contention-Free Period. There was a discussion on the need to keep the GTS deallocation mechanism that automatically defragments the contention free period to provide a contiguous allocation of resources. The argument for keeping it is that it saves energy from a coordinator perspective by ensuring transmission when the coordinator is turned on as well as saving signaling for allocation/deallocation of different users. The argument for removing it is that it might make it more difficult to create a scheduling system where the resources blocks (GTS) from overlapping coordinators are positioned to be orthogonal to each other to minimize interference. There was a discussion on the need for the “Inactive” period of the super-frame. It is not clear what the advantage of having an “inactive” part in the super frame is. The meeting was recessed until AM2. Meeting #4, Tuesday AM2 (10:30 – 12:30) Attendees: Volker Jungnickel (Fraunhofer HHI) Li Qiang (Huawei) Mohamed Abdullah (HBQ) Mohammad Noshad (VLNComm) Ryan Mennecke (JHU-APL) Nikola Serafimovski (pureLiFi)