2018年8月4日 · To reduce the burstiness of the connection requests in heavy traffic situations, access class barring (ACB) is proposed in the 3GPP standard. Using ACB, an MTC device postpones its request in a RACH with a probability p. In this paper, we propose a new adaptive ACB scheme for congestion control of bursty M2M traffic.

2018年10月18日 · Supporting trillions of devices is the critical challenge in machine type communication (MTC) communications, which results in severe congestions in random access channels of infrastructure-based cellular systems. 3GPP thus developed the access class barring (ACB) to control the expected number of simultaneous access requests in a preamble as one.

2018年9月1日 · We present a multiple data packets transmission scheme based on the Access Class Barring (ACB) and multiple granted Resource Blocks (RBs) to further reduce the MTC Devices’ (MTCDs’) energy consumption.

In this paper, we present a unified analytical framework to analyze the performance of the fixed ACB scheme for a simple random access procedure (i.e., one-shot transmission model) in machine type communication (MTC) over cellular networks.

Download scientific diagram | System model of MTC in LTE and activation procedure in the ACB scheme from publication: Overload control in the network domain of LTE/LTE-A based machine type ...

2016年8月17日 · ACB-based mechanisms distribute the access attempts based on the barring factor. It effectively reduces the collision probability under large transmissions at the same time. Among them, we focus on ACB-based mechanism to autonomously manipulate the barring factor.

2024年10月27日 · Access Class Barring (ACB) technology is employed in overload control. When the system is overloaded, the ACB factor adjusts its size based on the number of accessed devices. Simulation results show that compared with other existing methods, our method can effectively improve the throughput of the entire system.

In this paper, we propose an annulus-based ACB (AB-ACB) scheme and combine it with TA command comparison in stationary MTCDs scenario. Aiming to exploit the devices distribution potential in stationary scenario, AB-ACB divides cell coverage into some annuluses with equal width and adjusts ACB parameters based on the distribution of MTCDs in ...

2019年10月11日 · The traditional ACB scheme sets a fixed barring factor during the network access process of MTCDs. A traffic-aware ACB is proposed in to relieve the access delays and increase the access success rate, where the BS changes the barring factor based on the number of device arrivals. In this paper, we propose optimizing the barring factor by ...

Supporting trillions of devices is the critical challenge in machine type communication (MTC) communications, which results in severe congestions in random access channels of infrastructure-based cel-lular systems. 3GPP thus developed the access class barring (ACB) to control the expected number of simultaneous access requests in a pream-ble as ...