RB dynamic pre-allocation scheduling scheme for cellular Internet of Things

doi:10.7523/j.issn.2095-6134.2019.06.014

Abstract

Abstract: For high signaling overhead in dynamic scheduling, the LTE semi-persistent scheduling (SPS) is improved in combination with the machine traffic characteristics of cellular Internet of Things. We proposed a dynamic pre-allocation model of resource block (RB) and designed a corresponding scheduling algorithm. By using device buffers in combination with pre-allocation parameters instead of traditional grant scheduling, dynamic allocation of RBs for packets under low control channel usage rates reduces the resource waste. Simulation results show that the algorithm reduces the signaling overhead of scheduling, and the delay satisfaction and utilization of traffic channel under the limited control channel are better compared to the dynamic and semi-persistent scheduling algorithms.

Key words: cellular Internet of Things, signaling overhead, semi-persistent scheduling, dynamic pre-allocation

CLC Number:

TN929.5

JIN Yeqi, ZHENG Min, TAN Chong, LIU Hong. RB dynamic pre-allocation scheduling scheme for cellular Internet of Things[J]. , 2019, 36(6): 825-831.

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