The memory arbitration algorithm determines the worst-case access time to the main memory.
The refresh period is traditionally determined according to the highest working temperature and worst-case access statistics, which results in a short refresh period and large refresh power.
Using the same design-time information required for schedulability analysis in pure locking protocols, the integrated locking and versioning protocol can be implemented using only simple data structures with tunable bounded overheads and worst-case access times.
An MAC method is defined to be deterministic if the worst case MAC channel access delay is finite.
This is because micro BSs are densely deployed at street level (around 80 m apart from each other in the Madrid grid baseline case), and, in the worst case scenario, the access link of an MN can be subject to interference from several micro BS sectors at the same time.
It is common among published algorithmic methods that the worst case number of memory accesses per classification depends on the properties of the ruleset, such as the distribution of the address prefixes and port ranges.
So you take a worst-case approach?
As an example, the results revealed that on a 10-lane highway where nodes send 500 bytes long packets every 100 milliseconds and the sensing range is 1000 meters, a node with the CSMA MAC layer can drop up to 80% of the packets in the worst case (i.e., channel access was not granted during the 100 milliseconds between two consecutive packets).
"The user has to think: What's the worst case scenario if someone did access a partial set of my data?" said Nathan Little, director of product development at Gillware Forensics, the digital forensics arm of Gillware.
By knowing the access pattern of the packet methods and the contention resolution mechanism on shared memory channel, worst-case memory access times can be determined analytically.
Hence, in the worst case, both uplinks and downlinks of the MCR system can access primary bands when the PS is on downlink transmissions.
