Antennas for 5G Network at Home & Office

 

Introduction

In telecommunications, 5G is the fifth generation technology standard for broadband cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the planned successor to the 4G networks which provide connectivity to most current cellphones. 5G networks are predicted to have more than 1.7 billion subscribers worldwide by 2025, according to the GSM Association. Like its predecessors, 5G networks are cellular networks, in which the service area is divided into small geographical areas called cells. All 5G wireless devices in a cell are connected to the Internet and telephone network by radio waves through a local antenna in the cell. The main advantage of the new networks is that they will have greater bandwidth, giving higher download speeds, eventually up to 10 gigabits per second (Gbit/s).In addition to 5G being faster than existing networks, 5G can connect more different devices, and even if people are in crowded areas, the servers will be more unified, improving the quality of Internet services.    

Due to the increased bandwidth, it is expected the networks will increasingly be used as general internet service providers (ISPs) for laptops and desktop computers, competing with existing ISPs such as cable internet, and also will make possible new applications in internet-of-things (IoT) and machine-to-machine areas. Cellphones with 4G capability alone are not able to use the new networks, which require 5G-enabled wireless devices.          

Enhanced Mobile Broadband (eMBB)

The first stage of 5G adoption will bring high-speed data transfer to portable devices. Smartphones will be able to stream or download HD in seconds, browse the web with lightning-fast speeds, and instantly upload content to their favorite social media network.

Ultra-Reliable Low-Latency Communications (URLLC)

Robust data exchange with little to no delay for mission critical applications such as Public Safety Networks. Other anticipated use-cases of URLLC include smart factories, autonomous driving, remote surgery or medical diagnostics, and smart energy grids.

Millimeter-band radios (mmWave)

5G takes advantage of spectrum (between 24 GHz and 100 GHz) which benefits from extremely short wavelengths. That means mmWave’s ability to transmit data quickly and accurately will be a huge benefit in densely populated areas.

Massive Internet of Things (IoT) - mMTC

While MTC (Machine Type Communication) has been around for a couple of years, 5G technology aims to provide Massive Machine Type Communication, meaning millions of devices will be able to communicate with each other. In order to provide connectivity without implementation, maintenance and energy costs going through the roof, 5G will seamlessly connect networks of embedded sensors in smart devices with low latency, along with the ability to scale down data rates, power and mobility to provide low-cost solutions.

Massive Multiple-Input Multiple-Output (MIMO)

Massive MIMO enables dense network architecture which will allow many users to connect within the same area without experiencing slowdowns. Picture a busy street: if 4G is a two-lane highway, massive MIMO with 5G is a four-lane highway with carpooling - a significant increase in capacity and data throughput.

Advanced antenna systems (AAS) make use of multi-antenna technologies like beamforming and MIMO to improve network performance.

Breakthrough technologies that are integral to 5G, such as Massive MIMO, network slicing , beamforming and network function virtualization (NFV) require phased approaches to new 5G network deployment. They also require significant investment, with telecom operators expected to spend upwards of $1 trillion on new 5G network deployment over the next decade. This monumental task lends itself to a wide variety of strategies and options, each with inherent benefits and drawbacks surrounding 5G network technology and access to faster speeds.

The promise of new 5G deployment has transitioned from the drawing board to reality. The next generation of wireless technology, planned and developed for nearly a decade now, has begun limited service. 5G signal will ultimately bring faster speeds, reduced latency, and service improvements. The fundamental architectural transformation that makes this deployment possible is complex and multi-layered.  

5G Network Deployment

Unlike past historical transitions in wireless architecture, 5G represents an ongoing evolution of existing networks rather than a wholesale replacement or “forklift” approach. For LTE deployment, the wholesale approach limited financial payback for many operators. Incremental 5G network deployment, with 5G elements layered on top of legacy architecture, is commonly viewed as a prudent way to reduce capital expenditures and minimize financial risk. 

The service-based 5G architecture, along with core network slicing technology, enhance existing use cases while enabling new ones. 5G network deployment options are dependent on the business needs and preferences of the operator. 

Enhanced mobile broadband (eMBB) is expected to be the biggest global 5G use case in the short term. Operators intending to leverage the large increase in massive machine type communications (mMTC) or ultra-low latency communication (URLLC) are adapting their 5G deployment strategies accordingly. The deployment model also depends on the densification and coverage required for targeted use cases and the allocated spectrum for each network. 

5G Deployment and Fiber

Wireless technology gets most of the attention when 5G is discussed, but fiber deserves equal consideration. Despite the advancement of IAB technology to use portions of the available mm Wave spectrum for backhaul, a high percentage of 5G backhaul will remain fiber-based. Connections between the next generation core (NGC) and NR active antennae are also completed using a fiber pathway.

With the high volume of connections required for 5G fronthaul and midhaul applications, PON architecture is has proven to be a useful option. PON can be easily scaled to meet increased throughput demands. Validation of all fiber and PON connections must be completed, making advanced 5G fiber optic test solutions essential for fiber hygiene during 5G deployment.

5G Deployment Tools

5G has transformed all elements of wireless network infrastructure. This includes fiber, RAN, transport, and asset management. Each phase of 5G NR deployment now requires a specialized tool kit to support implementation. Operators have developed their own individual Method of Procedure (MOP). The more comprehensive approach to fiber testing, OTA verification, beam analysis, coverage, and throughput testing is often the more successful; just a single underperforming cell site can delay the launch of an entire large-scale deployment.

During the verification and validation phase for new 5G network equipment, test solutions capable of simulating 5G core and real-world user behavior in the lab can help to establish 3GPP conformance and quality of service prior to activation of 5G signals. The TM500 network tester can assess the complete 5G network user experience. This includes simulated interactions with other users and typical real-world device behavior such as emailing and streaming in the mobile world. The TM500 also supports a high number of UE’s per cell or carrier to evaluate capacity.

During the technology deployment, activation and scaling phase, the spectrum and interference of 5G signals in the millimeter wave requires accurate and reliable RF characterization and conformance testing. The portable CellAdvisor 5G combines real-time spectrum and interference analysis with 5G beam analysis capabilities. This makes it an optimal solution for massive MIMO and antenna beam validation. The Cell Advisor also includes built-in fiber test and inspection capabilities for added 5G deployment versatility. 

The importance of testing continues throughout the assurance, optimization, and monetization phase. In this phase, Quality of Experience (QoE) becomes a primary concern for fully operational networks. Advanced applications such as the IoT and autonomous vehicles have created enticing monetization opportunities with very low margin for error. This makes scalable, real-time intelligence platforms such as NITRO Mobile essential for capturing, locating, and analyzing mobile events for exceptional user experience insights.

Some have deemed 5G deployment to be a hallmark of the “sixth technological revolution”. Historically, this puts 5G evolution technology on a level of importance equivalent to steam power, the assembly line, or the dawn of the computer age. 

This historic distinction bestowed upon 5G adoption has spearheaded a massive infrastructure evolution and paradigm shift. Key players in this transformation have included many of the best engineers and scientists in the world. Infrastructure experts have realized that the wide array of new use cases require both standardization and flexibility, which can be difficult to achieve at the same time. Adherence to emerging infrastructure specifications and functional versatility make the very best 5G test tools essential components of the evolving 5G deployment landscape.

As the demand for throughput, improved user experience and ubiquitous coverage from consumers and corporations continues to grow, operators are quickly improving and expanding coverage and capacity in their wireless network in a cost-effective way. Recent technology developments have made advanced antenna systems (AASs) a viable option for large scale deployments in existing 4G and 5G mobile networks. AASs enable state-of-the-art beamforming and multiple-input, multiple-output (MIMO) techniques that are powerful tools for improving end-user experience, capacity and coverage. These advances have brought mm Wave communications, untenable almost two decades 1 ago, to manageable today. AAS significantly enhances network performance in both uplink and downlink. Finding the most suitable AAS variants to achieve performance gains and cost efficiency in a specific network deployment requires an understanding of the characteristics of both AAS and of multi-antenna features.

ADVANTAGES OF 5G TECHNOLOGY

The main advantages of the 5G are a greater speed in the transmissions, a lower latency and therefore greater capacity of remote execution, a greater number of connected devices and the possibility of implementing virtual networks (network slicing), providing more adjusted connectivity to concrete needs.

Greater speed in transmissions

Speed in transmissions can approach 15 or 20 Gbps. By being able to enjoy a higher speed we can access files, programs and remote applications in a totally direct and without waiting. By intensifying the use of the cloud, all devices (mobile phones, computers, etc.) will depend less on the internal memory and on the accumulation of data and it won’t be necessary to install a large number of processors on some objects because computing can be done on the Cloud.

Lower latency

Latency is the time that elapses since we give an order on our device until the action occurs. In 5G the latency will be ten times less than in 4G, being able to perform remote actions in real time.

Greater number of connected devices

With 5G the number of devices that can be connected to the network increases greatly, it will go to the millionaire scale per square kilometer.

All connected devices will have access to instant connections to the internet, which in real time will exchange information with each other. This will favor the IOT.

Network slicing

The 5G also allows to implement virtual networks (network slicing), create subnets, in order to provide connectivity more adjusted to specific needs.

DISADVANTAGES OF 5G

1. OBSTRUCTIONS CAN IMPACT CONNECTIVITY

The range of 5G connectivity is not great as the frequency waves are only able to travel a short distance. Added to this setback is the fact that 5G frequency is interrupted by physical obstructions such as trees, towers, walls and buildings. The obtrusions will either block, disrupt or absorb the high-frequency signals. To counter this setback, the telecom industry is extending existing cell towers to increase the broadcast distance.

2. INITIAL COSTS FOR ROLLOUT ARE HIGH

The costs related to the development of 5G infrastructure or adaptations to existing cellular infrastructure will be high. This amount will be further compounded by the ongoing maintenance costs needed to ensure the high-speed connectivity, and it’s likely the customers will bear the brunt of these big price tags. Cellular operators are looking to minimize these costs by exploring alternative options in the form of network sharing.

3. LIMITATIONS OF RURAL ACCESS

While 5G might bring about real connectivity for the predominantly urban areas, those living in the rural settings will not necessarily benefit from the connection. As it stands, many remote areas countrywide are not able to access any form of cellular connectivity. The 5G carriers are going to target big cities with larger populations, eventually working their way into the outer areas, but it’s not likely this will be happening any time soon. As a result, only some of the population will benefit from 5G communication.

4. BATTERY DRAIN ON DEVICES

When it comes to cellular devices connected to 5G, it seems the batteries are not able to operate for a significant period of time. The battery technology needs to advance to allow for this enhanced connectivity, where a single charge will power a cellphone for a full day. Alongside depleted batteries, users are reporting that cellphones are getting increasingly hot when operating on 5G.

5. UPLOAD SPEEDS DON’T MATCH DOWNLOAD SPEEDS

The download speeds of 5G technology are incredibly high, in some cases up to 1.9Gbps. However, the upload speeds are rarely more than 100Mbps, which is not quite as incredible as initially touted. In relation to existing mobile connectivity, however, the upload speeds are higher than being seen with 4G LTE.

6. DETRACTING FROM THE AESTHETICS

The erection of more cellphone towers, or extension of existing cell phone towers, is not welcomed by most communities because they are seen to diminish the overall look and feel of an area. With 5G, there is going to be a need for increased infrastructure development, which won’t necessarily be seen as a good thing for local residents.

References

https://www.researchgate.net/publication/309672729_Insights_into_5G_Technology_Some_Data_Transmission_Aspects

https://www.altair.com/newsroom/articles/what-is-5g-and-why-are-there-so-many-new-antennas/

https://www.mdpi.com/1424-8220/21/19/6608/pdf

https://www.ecn.co.za/what-are-the-disadvantages-of-5g/

https://www.iotsworldcongress.com/advantatges-of-5g-and-how-will-benefit-iot/#:~:text=The%20main%20advantages%20of%20the,adjusted%20connectivity%20to%20concrete%20needs.

Blog By:

S.Y. E&TC Div. - D

Batch 3_Group_04

Vishwakarma Institute of Technology, Pune