Fifth Generation fixed networks (5GFN)

Fixed networks refer to the communication structures that are based on the use of cables for conveying data, voice or video signals. While mobile networks utilize radio waves, the fixed networks employ different types of cables, namely twisted pair copper, coaxial, and optic fibers.

Fixed networks have undergone a remarkable transformation over the decades and each generation has introduced increased speed, reliability and connectivity. Fifth Generation Fixed Networks (5GFN) are recent development in this field, they are supposed to bring drastic changes in the way data is transported and received over fixed networks.

Fixed Access technologies are passive optical network, point to point optical, wired broadband, wired narrowband, wireless narrowband and Free Space Optical Transmission visible light communication, using copper based DSL technologies like Asymmetric Digital Subscriber Line (ADSL), Very High Digital Subscriber Line (VDSL), High Digital Subscriber Line (HDSL), Single-pair High Digital Subscriber Line (SHDSL), G.fast and M.G.fast. All these access technologies are being used in their traditional access application but also in backhaul and fronthaul for new services such broadband wireless, 5G mobile and data center interconnect.

History and Evolution of Fixed Networks

Fixed networks as we know have passed through five generations achieving very significant changes from the aspects of speed, capacity and services. The First Generation (F1G) used bandwidths in the kilobit range upstream and downstream below 2 Mpbs and this was targeted at providing service novelties like voice calls and greatly limited internet connections. F2G introduces speed ranges of megabit per second and enhanced the internet connection and permits the streaming of Standard Definition videos. The features of this period regards the use of some technologies like ADSL/ADSL2+.

The Third Generation (3G) enriched the bandwidth and offered download speeds ranging from 30 to 100 Mps and upload speeds ranging from 15 to 100 Mps, which rendered it feasible to deliver HD videos and that operated by VDSL2 technology. The Fourth Generation F4G delivered ultra-fast broadband with downstream speed ranging 100 Mbps to 1Gbps while upstream ranging from 50 Mbps to 500 Mbps to support 4k-UHD video using the GPON and G.fast technologies.

The current fifth generation, labelled as 5G, is in the development process to one that provides speeds within a range of 1 to 10Gbps, both the Downstream and Upstream speeds. Recent generation is supporting such applications as VR, cloud gaming, and smart city applications. It implemented FTTH/FTTR structures as well as the 10GPON technology which, in turn, gave it higher stability, bandwidths, and power-saving than what it would have got from more conventional structures. Over the years each generation has built upon the previous one to bring out the enhanced, more efficient and higher bandwidth, communication networks around the world.

Architecture of 5GFN

5GFN infrastructure is envisioned fixed network Fifth Generation Fixed Networks or 5GFN is in direction for high bandwidth, dependable and expandable network to address all future applications and service. The architecture can be broken down into four main components: The important types of network that exist are known as the Core Network, the Access Network, the Transport Network, and the Edge Network. All these components have the core function of performing the implementations and the management of the network in the proper manner.

1. Core Network

This means that, for instance, the parent network is responsible for data traffic and flow, authentication and charging and controlling functions of the network. It also assists in ensuring that data which is in transit between sources and destinations is correctly formatted and arrives at its destination complete and free from disturbance.

Technologies:

• Software-Defined Networking (SDN): Taken together, the least complexity occurs in an architecture where the network control plane is separated from the data plane, therefore it becomes easier and more implementable to perform changes in the network plane.
• Network Functions Virtualization (NFV): Can virtualize network services and then implement them in white-box or commodity hardware for the purpose of cutting costs and realizing a better scale.
• Cloud-Native Infrastructure: Improves the ability to dynamically grow, adapt and the overall reliability of the network by leveraging on cloud solutions.
• Advanced IP Protocols: Implements the latest IP protocols to ensure efficient and secure data transmission.

2. Access Network

The access network gives the opportunity for the end-users to be directly connected to the core network in which the last mile delivers high-speed interconnect and other services to homes and other organizations.

Technologies:

• Fiber Optics (FTTH, FTTB): Uses cables of fiber-optic that is capable of providing high bandwidth internet connection in homes (FTTH) or buildings (FTTB).
• Hybrid Fiber-Coaxial (HFC): This merely combines fiber optics and coaxial cable in a manner that increases bandwidth for the broader transmission of broadband internet over great lengths.
• Advanced Wireless Access: Employs wireless technologies to provide connectivity in areas where wired solutions are not feasible.

3. Transport Network

The transport network is the way by which the access network and the core network transmit information to each other. It also serves the purpose of very high bandwidth that ensures that such massive volumes of information can be transmitted throughout the network at equal rates.

Technologies:

• Dense Wavelength Division Multiplexing (DWDM): Increases the capacity and performance of fiber optic cables by simultaneously using various colours of light on different parts of the cable for data transmission.
• Ethernet: A networking technology that is often implemented perused for its data transfer rate as well as the ability to accommodate all sorts of networks.
• Multiprotocol Label Switching (MPLS): Transfers data in short path labels from one network node to the other instead of the long-network addresses; creates improved speed and efficiency of the data transfer.

4. Edge Network

It brings computation capacity closer to the consumers with the aid of Edge computing hence reducing latency which slow down the rate of using applications and services. They enable the request and the processing of data at the same time, which is critical for gaming, virtual reality, IoT, etc.

Technologies:

• Edge Computing: Offers decision making computational capacity at the peripheral and does not have to send data to far-off server centres.
• Edge Data Centers: Smaller localized data storage centres which could be situated nearer to the customers, providing the required functional power.
• Content Delivery Networks (CDNs): Distribute content across multiple locations to ensure fast and reliable delivery to users.

Technologies Enabling 5GFN

1. Fiber Optics: With their unmatched speed and bandwidth capacities, fiber optic cables form the foundation of 5GFN. Fiber optics reduce signal loss and enable high data rates over extended distances.
2. Dense Wavelength Division Multiplexing (DWDM): This technique allows numerous data streams to be delivered simultaneously on various light wavelengths, increasing the capacity of fiber optic lines.
3. Advanced Modulation Techniques: By optimizing the utilization of available bandwidth, techniques like Quadrature Amplitude Modulation (QAM) improve the efficiency of data encoding and transmission.
4. Software-Defined Networking (SDN): SDN enables more adaptable and effective network management and configuration by separating the network control plane from the data plane.
5. Network Function Virtualization (NFV): NFV enables the virtualization of network services, allowing them to be run on standard servers instead of specialized hardware. This reduces costs and improves scalability.

Patents in 5GFN

Huawei Technologies Co., Ltd. – Advanced Methods for High-Speed Data Transmission in F5G Networks

According to the information given in the patent CN106537814B by Huawei Technologies Co. , Ltd. , the problem solved by this patent lies in the fact that previous generations of Fixed Networks have been incapable of providing sufficient Speed, Capacity, and Reliability in terms of supporting new applications such as Virtual Reality, Cloud Gaming, and Smart City Services. These applications demand bandwidth, low latency and reliable connectivity which current networks can hardly provide due to ageing infrastructure and relative lack of technological innovation as opposed to new generation networks.

The solutions for the development of the HBB are based on the Fifth Generation Fixed Network (F5G) architecture combined with SDN, NFV, and fiber optics (FTTH, FTTB). These technologies make it possible to achieve gigabit speeds and improve functions within the network. The F5G network features such components as well-arranged data center facilities and cloud servers for effective data storage and processing, whereas edge computing and local data center provides computational resources near the users, which decreases the actual response time. This prevents the structural vulnerability that may result from relying on a single protocol or solution hence offering reliability for serving the modern applications.

Samsung Electronics Co Ltd – Developing an F5G Network Utilizing Advanced Optical Fiber Technologies

The patent US11246121B2, has been filed by Samsung Electronics Co Ltd which seems to have identified a challenge in the process of trending towards simultaneously faster, more reliable, and low latency internet connectivity owing to emerging next generation applications including virtual reality, cloud gaming, smart city etc. Fixed network OMX as it is not able to provide the above mentioned services due to congestion, high latency and lack of adequate bandwidth.

The solution suggested in the patent relates to the creation of the fifth generation fixed network referred to as F5G with the help of the advanced optical fibers with networking infrastructures. Some of the enhancements are fiber to the premises such as GPON, DWDM for high-line-rate data transfer and edge computing to minimize latency. These innovations intend to offer access with considerably higher bandwidths, superior availability, and almost zero latency and signaling time in addition to higher capability to transmit data to support the needs of the contemporary applications. The patent describes how advanced software techniques such as SDN and NFV can be applied to improve flexibility and control over the network; guaranteeing a stable and elastic platform for later functional requirements.

Conclusion: The future of Fixed Network

Fixed networks’ evolution has been incremental but not unimpressive as each generation has offered higher speed, reliability, and connectivity compared to the other. With the arrival of the Fifth Generation Fixed Networks (5GFN), we are expecting a revolution in the system that is operated in fixed networks for data transmission and reception.

The vision behind 5GFN is not speed only, but to be the beginning of a new form of connectivity that will lead to innovative solutions. From games whose setting is VR to cloud gaming, smart city solutions to IoT further innovations, 5GFN is poised to be backbone of interconnected digital world.

The technology giants ensured 5G objectives by adopting fiber optics, DWDM, SDN, NFV, and edge computing; 5GFN is ready to enable gigabit speed, ultra-low latency, and supreme reliability. These, along with other sophisticated modulation and complex cloud designs, will provide the backbone for the next generation networks.

Moving forward, one cannot doubt that 5GFN will not only cater, but rather over-provide according to the standards set for modern connection. By addressing the specification and future evolution of 5G networks, 5GFN holds the potential to revolutionize connectivity, communication, and cooperative effort.