WSN definition
Examples of WSN in a sentence
Moreover, the raw measures must be consulted by the other enti- ties of the architecture (SLA Manager, SLA Admit- ter), without occupying the WSN resource.
For instance, the measures could be placed in dedicated CoAP messages [11]; • use passive monitoring: no explicit traffic is gen- erated on the WSN, a server in the WSN opera- tor core network centrally observes all the ▇▇▇▇- siting packets; • use active monitoring: either send dedicated monitoring packets, or piggyback the measures onto the data packets.
It evaluates how much WSN re- source the corresponding new SLA would use.
Then, it consults the WSN state information in the Service Registry (See details in Section 5.2).
Clients may need a specific mea- sure precision, and that could be a reason for differ- entiation among providers: the WSN operator should monitor precisely enough its network performance, to satisfy the client requirements.
Guaranteed flows would be assigned dedicated cells, but the WSN operator can give some permeability to non-guaranteed traffic by installing shared cells.
It compares the current WSN availability with the global needed re- source, including the requirements of the previously admitted SLAs. It concludes and informs the opera- tor about the feasibility of the new submitted SLA.
Hence, the Service Registry must be centralized (e.g. a database in the WSN operator core network).
When piggybacking, the WSN operator may need to inspect data pack- ets of the client.
Thus, if the WSN operator changes the algo- rithms of the SLA Manager and SLA Admitter, new policies can be applied taking into account the whole history of the WSN.