To support the massive machine-type communications (mMTC) scenario for Internet of Things (IoTs) applications featured by large-scale device connectivity and low activity, grant-free non-orthogonal multiple access (GF-NOMA) compressive sensing (CS)-based multi-user detection methods (MUD) are developed. In this paper, we develop two Bayesian CS-based methods, i.e., sparse Learning (SBL) fast in...

Non-orthogonal multiple access (NOMA) is a key technology to enable massive machine type communications (mMTC) in 5G networks and beyond. In this paper, NOMA applied improve the random efficiency high-density spatially-distributed multi-cell wireless IoT networks, where devices contend for accessing shared channel using an adaptive p-persistent slotted Aloha protocol. To capacity-optimal networ...

Massive machine-type communication (mMTC) is expected to provide reliable and low-latency connectivity for an enormous number of devices, which turn active sporadically or frequently. In this highly dynamic situation, it crucial design efficient random access (RA) procedures cope both with the flood simultaneous requests potential failures. article, by exploiting large sequence space, excellent...

The evolution of fifth generation (5G) networks needs to support the latest use cases, which demand robust network connectivity for collaborative performance agents, like multi-robot systems and vehicle anything (V2X) communication. Unfortunately, user device’s limited communication range battery constraint confirm unfitness known robustness metrics suggested fixed networks, when applied time-s...

5G technology is called to support the next generation of wireless communications and realize “Internet Everything” through its mMTC (massive Machine-Type-Communications) service. The recently standardized 5G-AKA protocol intended deal with security privacy issues detected in earlier generations. Nevertheless, several shortcomings have been reported, including a possibly excessive computational...

The main goal ofNew Radio 5G (NR) mobile technology is to support three generic service categories, each with very specific requirements. first category enhanced Mobile Broadband (eMBB), the second relates massive Machine-Type Communications (mMTC), and third ultra-Reliable Low Latency (URLLC). slicing of radio part network access has greatly contributed emergence these categories different qua...

For heterogeneous demands in fifth-generation (5G) new radio (NR), a massive machine type communication (mMTC), enhanced mobile broadband (eMBB), and ultra-reliable low-latency (URLLC) services have been introduced. To ensure these quality-of-service (QoS) requirements, non-orthogonal multiple access (NOMA) has introduced which devices can be served from the same frequency by manipulating power...

Fifth generation (5G) and beyond 5G (B5G) wireless communications will provide services under different promising usage scenarios applications including enhanced mobile broadband (eMBB), high-reliability low-latency (HRLLC), massive machine type (mMTC) with stringent performance attributes such as higher system capacity, low latency, high reliability, greater spectral effi ciency, well enabling...

In this paper, we study how to efficiently and reliably detect active devices estimate their channels in a multiple-input multiple-output orthogonal frequency-division multiplexing (OFDM) based grant-free non-orthogonal multiple access system enable massive machine-type communication (mMTC). First, by exploiting the correlation of channel frequency responses across OFDM subcarriers, propose blo...