Hi all, As we discussed in IETF 105, we may need some way to monitor the candidate cells to schedule before adding them.
Hence the following paragraph is added in version 06: As a consequence of randomly cell selection, there is a non-zero chance that nodes in the vicinity installed cells with same slotOffset and channelOffset. An implementer MAY implement a strategy to monitor the candidate cells before adding them in CellList to avoid collision. For example, a node MAY maintain a candidate cell pool for the CellList. The candidate cells in the pool are pre-configured as Rx cells to listen whether there is any incoming frame on those cells. If any IEEE802.15.4 frames are received within a pre-defined duration on one cell, that cell will be moved out from the pool and a new cell is selected as a candidate cell. The cells in CellList are picked from the candidate pool directly when required. Please let me know if you have any comments on this fix. Thanks! Tengfei -- Chang Tengfei, Postdoctoral Research Engineer, Inria
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