MTC Device Random Access Collision Reduction via Hash-Based Timing

The patent applies preliminary action by having machine type communication devices determine and calculate waiting time intervals before actually accessing the random access channel. Devices use stored identity information and a hash function to self-determine when to access the network, spreading out access attempts over time. This preliminary calculation of access timing prevents synchronized collisions without requiring complex real-time coordination or network modifications.

The patent implements self-service by enabling machine type communication devices to autonomously determine their own access timing without requiring network signalling. Devices use their stored identity information and a hash function to self-calculate waiting time intervals, eliminating the need for network-controlled access class barring mechanisms. This self-determined approach reduces both network signalling overhead and device energy consumption while maintaining collision reduction effectiveness.

The patent applies segmentation by dividing the simultaneous access attempts into separate time intervals. Each machine type communication device calculates a unique waiting time interval based on its identity information, effectively segmenting the large group of devices into individual access slots. This temporal segmentation allows high network utilization while preventing resource overwhelming, as devices access the network at staggered times rather than all at once.