5G NTN Helps to Build Satellite-Ground Converged Network III

IoT-NTN eNB Software Functions and Description

IoT-NTN protocol stack has been categorized into user leveling and control plane. In user-plane IoT-NTN protocol multi consists of physical layer (PHY), MAC layer, RLC layer also PDCP layer. In Control-plane IoT-NTN protocol stack consists of PHY, MAC, RLC, PDCP, RRC and NAS layers.

eNB L1 FPGA-baseband Software

4?? PHY Layer

ALifecom IoT-NTN eNB PHY ensures reliable transmission and reception of wireless signals. It supports narrowband channels with a bandwidth of 200 KHz, enabling efficient spectrum utilization. The PHY layer utilizes QPSK modulation for both downlink and uplink transmissions, maximizing spectral efficiency and signal robustness. And employs Orthogonal Frequency Division Multiple Access (OFDMA) in the downlink and Single Carrier Frequency Division Multiple Access (SC-FDMA) in the uplink, facilitating efficient resource allocation and power-saving capabilities.

eNB Radio Protocol Software

4?? MAC Layer

The MAC layer provides efficient access control and scheduling functions for radio resources. It ensures optimal resource utilization, enabling simultaneous communication with multiple user devices. The MAC layer supports different classes of service, allowing for differentiated quality of service (QoS) based on application requirements.

4?? RLC Layer

The RLC layer ensures reliable transmission of data packets. It handles segmentation, reassembly, and error detection for seamless and error-free data transfer. The RLC layer employs advanced techniques for efficient bandwidth utilization and reduced latency.

4?? PDCP Layer

The PDCP layer optimizes the transmission of IP packets by providing header compression and encryption. It reduces the overhead associated with packet transmission, enhancing the overall efficiency of data transfer. The PDCP layer ensures secure communication by implementing encryption and integrity protection mechanisms.

4?? RRC Layer

The RRC layer handles control signaling and connection management between the user devices and the core network elements. It manages procedures such as device registration, mobility management, and power-saving features. The RRC layer ensures seamless handover, network attachment/detachment, and efficient utilization of network resources.

4?? RRM Layer

RRM optimizes the allocation and utilization of radio resources, and ensures efficient load balancing, interference management, and quality of service (QoS) control.

eNB Network Protocol Software

4?? S1-AP Interface

S1-AP facilitates signaling and control procedures between the eNB and the core network, ensuring robust connectivity and mobility management.

4?? X2-AP Interface

X2-AP enables direct communication and coordination between neighboring eNBs, supporting handover, load balancing, and neighbor cell information exchange.

Hardware Platform Design

Over years ALifecom has worked on several FPGA/DSP platforms with different RFICs. The team has accumulated tremendous experience in architecture design, spec determination, component selection, IP integration and fast prototyping. Backed by an arsenal of key IPs and unrivaled RD capability with proven track records, Alifecom can provide complete system design service with unprecedented speed and quality to worldwide customers.

Advantages of FPGA-Based Layer 1

With the increasing demand for high-performance and flexible solutions in wireless communication systems, Field-Programmable Gate Arrays (FPGAs) have emerged as a compelling choice for implementing the Layer 1. The Layer 1, which encompasses the physical layer functionality, is critical for signal processing and transmission in communication networks. FPGA-based implementations offer a range of advantages that make them well-suited for Layer 1 processing.

4?? Performance:

FPGA-based implementations offer high-performance processing capabilities, especially in the context of the L1. The parallel processing capabilities of FPGAs enable efficient and fast signal processing, resulting in improved overall system performance.

4?? Flexibility and Customization:

FPGA provides flexibility for hardware-level programming and customization. With L1 on FPGA, you have the ability to fine-tune and optimize the physical layer functionality according to specific requirements. This allows for greater control over the L1 processing and the ability to adapt to different network configurations. Additionally, the upgradability to NR-NTN ensures that the system can support future enhancements and updates in the NTN technology.

4?? Scalability and Upgradability:

FPGA-based solutions offer inherent scalability. It can be easily upgraded or modified to accommodate new features and standards, including the transition to eMTC/Redcap/NR-NTN technologies. This ensures that the system remains compatible with evolving requirements and advancements in NTN technologies.

4?? Integration:

FPGA can be seamlessly integrated with other hardware components and IP cores. By having L1 on FPGA and utilizing dedicated IP, you can efficiently process and interface with the physical layer. This integration allows for optimized communication and coordination between different layers, improving overall system efficiency. Additionally, it allows for the integration of the feeder link (e.g. DVB-S2/DVB-S2X), enabling smooth data transmission in the system.

4?? Power Efficiency: FPGAs can be optimized for power efficiency. By leveraging the parallel processing capabilities and hardware-level customization, power consumption can be effectively managed, ensuring optimal power usage for L1 processing tasks.

ALifecom Technology Coporation

#ALifecom?is a leading provider of wireless communication signal testing solutions, specializing in network testing solutions for top industrial and consumer electronics manufacturers worldwide. With multiple core technology patents, we are committed to delivering industry-leading mobile network testing solutions for cell phones, designed to serve top industrial and consumer electronics manufacturers globally.

We have focused on researching and developing advanced wireless communication technology for many years. Our research and development team has accumulated extensive technical expertise in various wireless communication technologies, including #5G #NTN, WiFi, DVB-T, WiMax, g.hn, 4G LTE/LTE-A, eMTC, NBIoT, small cell, and the latest 5G NR technology, focusing on wireless communication technology related?to the terminal and base station (including base station and core network) of cellular mobile networks.

Contact us at?[email protected]