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Unlicensed & Licensed Bands for Wireless Networks Expanding SATCOM Role in Booming Market

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Andrew Aroh

5G brings three new aspects to the table: greater speed [to move more data]; Lower latency [to be more responsive]; higher capacity (the ability to connect a lot more smart devices and sensor at once).

There will be slow but responsive 5G.

There will be also fast 5G with limited coverage.

Spectrum-wise 5G runs in three kinds of airwaves: Low–Frequency bands networks; Mid–Frequency bands networks; and high–Frequency bands networks.

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Low –Frequency bands 5G networks use existing cellular band and Wi-Fi band [5 GHz] by taking advantage of more flexible encoding using OFDM [better spectral efficiency, data reliability and effective range].The resulting bigger channel sizes thus created achieves speeds 25 to 50 percent better than 4G [2Gbps].

This yields about 3.5Gbps which is better than existing 54 Mbps for Wi-Fi.

These networks can cover the same distances using existing cellular networks and generally won’t need additional cell sites/Access points (AP).

Thus, even with existing macro cells 5G will be able to boost capacity by four times better than current systems by leveraging wide bandwidths and advanced antenna technologies [Multi beam with massive MIMO].

The goal is to have far higher speeds available and far higher capacity per sector, at far lower latency than 4G [20-30ms].

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The standards bodies involved are aiming at 20Gbps speeds and 1ms Latency, at which point very interesting things begin to happen.

The first applications for 5G includes fixed wireless access for homes and enhanced mobile broadband [eMBB] services using new 5G phones, tablets, wireless access modems and  HOTSPOTS.

High –speed wireless links tend to be deployed in conjunction with wireless access technologies, namely:

  • LMDS/WLL base/earth stations
  • Mobile Voice and Data base/earth stations
  • Hotspot [Wi-Fi] base/earth stations

Hotspot access network is one in which wireless access is enabled by 802.11-based Wi-Fi technology.

This allows very high–speed roamable access to: Portable computers, PDAs, video games, services terminals of various types [e.g. IPAD], warehouse/industrial equipment, office computers, hand/personal wireless phones i.e. GMPCS (Global Mobile Personal Communications by Satellite).

Hotspots have been vigorously deployed to primarily serve the travelling business community with the current applications being corporate LAN access.

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Hotels, airports, conferences centers, restaurant centers and shopping malls are the current deployment targets intended to serve these markets.

The low cost of the user terminals coupled with the pseudo-mobility of this technology will see it in wide spread HOME INDOOR and OUTDOOR deployments with virtually unlimited applications and services.

This technology has found its way into a merger of sorts with the existing mobile voice networks, providing much sort after integrated mobile voice & data networks with widespread ubiquitous coverage provided via satellite.

Larger Hotspots are constructed using a number of short range Access Points [APs] operating in unlicensed band allocations at 2.4, 5.2 or 5.8 GHz.

Each AP can provide access rates of 11Mbps or 54Mbps using highly standardization 802. 11a/b/g/n using COFDM technology for large and scalable Networks.

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The Hotspots within a given metropolitan networks can then be linked using wire line/cable or wireless technologies.

Like other cellular networks, 5G networks use a system of Cell Sites/APs that divide their territory into sectors and send encoded data [using OFDM] through radio waves. Each site must be connected to a network backbone. High speed wireless links operating above 50Mbps can be operated in unlicensed bands or licensed bands depending upon the services and perceived interference immunity of the links, whether through a wired or wireless backhaul connection.

  • When considering, wireless inter Hotspot, links, the use of unlicensed technology is attractive since the entire 802.11 user access layer is unlicensed.
  • However, once aggregation in the Hotspot has occurred, the interference prone nature of the unlicensed bands makes them unstable choices for backhaul except for bands like 24GHz and 60GHz in which there is a high degree of natural or regulated interference immunity.
  • As a result, the aggregation of the data from these access cells tend to be focused on high-speed, highly reliable and predictable links constructed using fiber [If available] or licensed high-speed wireless using satellite technology or microwave links. Frequencies such as 18, 23, 26 and 28 GHz are often candidates for these licensed links. Care must be taken when considering unlicensed operation in the 5.8GHz band since this band is highly prone to interference .The 24 GHZ allocation does allow only highly directive PTP links and 60 GHz offers very highly natural attenuation against undesired interferences. Ultimately, the best reliability and predictability are offered by licensed links.
  • 5G over satellite catches on much faster than unexpected:
  • Satellite must be inserted into the global virtualized architecture
  • Industrial companies have demonstrated the use of satellite communications capabilities integrated and interoperable in the 5G environment, achieve interoperability of networks and demonstrate the functionality, performance and benefits brought by the use of satellite. The first phase leveraged existing space and ground segment assets and new development enables the high efficiency, high performance, virtualization and multi service capability paramount for the main 5G use cases.
  • These activities drives the full integration of satellite in 5G through open and standard solutions, facilitated primarily through 3GPP standardization.

SATELLITE PROVIDERS LOOK TO EXPAND ROLE IN BOOMING Wi-Fi MARKET:

  • Increasing demand for broadband internet access anytime, anywhere is what is fueling the growth of Wifi services.
  • Satellite services providers are moving into the booming market for wireless communications by offering satellite links for Wi-Fi [Short for Wireless Fidelity] hot-spots.
  • The market is substantial as Wi-Fi hot-spots continue to pop up in office buildings and other public and private venues around the world. Indeed, both satellite and terrestrial service providers are competing to offer the services.
  • Just as satellite backhaul has helped expand the reach of mobile telephone networks, it can also expand Wi-Fi access.
  • Rural markets in developed countries, such as France, as well as those in less developed area in Africa, are being brought across the digital divide because of such access.
  • A particularly interesting satellite application in the U.S.A is to connect temporary Wi-Fi hot-spots used for sporting events and natural disaster relief.

Broadband wireless software and network providers have found that satellite networking can work better than terrestrial lines to connect wide area Wi-Fi hot-spot networks.

Installing a nationwide-network with terrestrial links [Lines] involves complexities that can include the use of multiple vendors, long lead lines, and multiple points of contact for repairs.

Satellite network uses a single vendor.

  • A strategic partner and value added reseller can provide an internet portal for truckers with Wi-Fi hot spots at more than 250 truck shops. It can also offer software solutions and a satellite network capable of transmitting data at up to 48 megabits per second.
  • When drivers or any other subscribers are in a hot-spot, they have access to a proprietary network that can transmit application data, access the internet and intranets, as well as send and receive-email.
  • To enhance cost-effectiveness of its system, service partners can design their networks around hotspot access locations that will be located strategically across the country.
  • Wi-fi hotspots provide an excellent avenue for satellite systems to provide broadband access even with traditional-distribution satellites.

Andrew Aroh is President SSPI Nigeria

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General News

Fake Agency: ICPC Indicts NITDA, Others over Inadequate Due Diligence

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Independent Corrupt Practices and Other Related Offences Commission (ICPC) indicted the National Information Technology Development Agency (NITDA) and other ministries over administrative lapses that allowed the fictitious Presidential Foreign Investment Promotion Council (PFIPC) to operate.

Fake Agency: ICPC Indicts NITDA, Others over Inadequate Due Diligence

Musa Aliyu, chairman, ICPC, stated that NITDA, alongside the Office of the Secretary to the Government of the Federation (OSGF), the Budget Office, and other bodies, failed to carry out adequate due diligence and standard operating procedures.

ICPC said however,  clarified that the findings pointed to severe internal control weaknesses and administrative negligence rather than active official complicity by NITDA and the other affected agencies.

The briefing followed a 30-day investigation ordered by the president on July 7 into allegations surrounding the purported presidential council.

The commission also cleared the presidency and the Central Bank of Nigeria (CBN) of any wrongdoing but blamed institutional lapses in several ministries, departments and agencies (MDAs).

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Aliyu said investigators established that Adeniyi Adeyemi, the director-general, was never appointed by the federal government and that the PFIPC had no legal existence.

“As you may recall, on the 7th of July, Mr. President directed the ICPC to conduct an investigation into the fake Presidential Foreign Investment Promotion Council and submit a report within 30 days,” he said.

“Today, exactly within the stipulated period, we have submitted an interim report based on our interactions with all stakeholders involved.”

According to Aliyu, Tinubu directed the commission to make its findings public in the interest of transparency and accountability.

He said the investigation found that Adeyemi’s purported appointment letter was forged.

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“It has been established that Adeniyi Adeyemi Matthew was never appointed by the Federal Government or any authority whatsoever,” he said.

“The Presidential Foreign Investment Promotion Council, which sometimes they called the Presidential Foreign Intervention Promotion Council, was never established by any law, executive order or any valid instrument of government.

“The appointment letter presented by Adeniyi Adeyemi Matthew was completely forged alongside similar documents used to perpetuate the illegal activities of the fake agency.”

Aliyu stated that a purported government gazette used to legitimise the organisation was also fabricated.

“If you recall, there was a gazette which he used to support the fake agency. That gazette is an illegal document that never passed through the processes prescribed by law,” he stated.

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“Our investigation found that the office used by the fake agency was the office of the Presidential Economic Advisory Council. The office was broken into and access was gained illegally. That was how he was able to operate from there.”

Aliyu also revealed that investigators uncovered two additional fictitious government agencies allegedly created by the suspect — the FCT Investment Promotion Agency (FIPA) and the Foreign Investment Promotion Agency/Public-Private Partnership (FIPA-PPP).

According to him, fake legislative instruments were used to create the agencies and open bank accounts.

Despite the elaborate scheme, the ICPC chairman said the investigation found no evidence that federal government funds were disbursed to the fake council.

“Our investigation found that no funds of the federal government were approved or disbursed to the fake PFIPC,” he said.

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“We also discovered no weaknesses in the systems of the State House or the Central Bank of Nigeria during our investigation. The fake appointment letter did not originate from the presidency.

“Our investigation found that some public officers failed to carry out due diligence and failed to comply with standard operating procedures in their ministries and departments. That gave him the opportunity to carry out these illegal acts.”

 

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Tax Reform Built on Taxing Prosperity, Not Poverty– Adedeji

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Nigeria tax system is build on taxing prosperity not poverty, according to Dr. Zacch Adedeji, executive chairman, Nigeria Revenue Service (NRS).

Tax Reform Built on Taxing Prosperity, Not Poverty– Adedeji

Dr. Zacch Adedeji, executive chairman, Nigeria Revenue Service

Adedeji, also  dismissed the insinuation that the government’s tax reform is aimed at extracting money from Nigerians .

He said the essence of reform is creating an economic environment where individuals and businesses can prosper.

Dr. Adedeji made the clarifications on Sunday night while appearing on Channels Television’s Politics Today, where he defended the administration’s tax reforms and addressed concerns over rising government revenue amid the economic hardship facing Nigerians.

According to him, the government’s objective is to tax the fruits of investment rather than the investment itself.

“For us at Nigeria Tax, we are not there to extract. Our focus is not revenue. I don’t want to tax poverty. I’m to tax the fruit, not the seed, and I’m to tax the return, not investment.”

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Adedeji explained that the government would generate more revenue as businesses became more profitable, without necessarily increasing the tax burden on individuals and companies.

He said a company that made N100 in profit could generate N30 in tax revenue for the government, but if its profit increased to N200 or N300, government revenue would rise accordingly.

“So, if I want to make more, I must work for you to make more. And that is why it is in the best interest of us in Nigeria Revenue Service that businesses are doing well, individuals are doing well,” he said.

He said the approach was consistent with President Bola Tinubu’s economic agenda, which seeks to remove barriers to investment and create a more conducive environment for businesses to operate and expand.

Adedeji cited reforms in the electricity sector as part of the government’s efforts to stimulate economic activity.

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He noted that the Electricity Act had devolved powers to state governments to generate, transmit and distribute electricity, arguing that improved power supply would boost production and productivity across the economy.

 

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UNESCO Taps Oguamanam,Nigerian Scholar to Advisory Body on Science, Tech Ethics

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Prof Chidi Oguamanam, Nigerian scholar, has been invited to serve as a member of the United Nations Educational, Scientific and Cultural Organization (UNESCO’s) World Commission on the Ethics of Scientific Knowledge and Technology.

UNESCO Taps Oguamanam,Nigerian Scholar to Advisory Body on Science, Tech Ethics

Prof Chidi Oguamanam,

The appointment, which covers four years from 2026 to 2029, recognises Oguamanam’s contributions to the ethics of science and technology and related disciplines.

The invitation was conveyed in a letter from UNESCO on Saturday, which described the commission as an independent advisory body and forum for reflection on major ethical challenges arising from advances in science and technology.

The letter stated, “Recognising your significant contributions to the ethics of science and technology and related disciplines, it is my honour to invite you to become a member of UNESCO’s World Commission on the Ethics of Scientific Knowledge and Technology for a period of four years, from 2026 to 2029.”

Established in 1998, the commission brings together experts from different regions and disciplines to examine ethical issues associated with scientific and technological developments, climate change and the environment.

UNESCO said regional balance was important to the commission’s membership to promote multidisciplinary and transdisciplinary debate on emerging ethical challenges.

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According to the organisation, the commission provides guidance and recommendations through its reports to UNESCO, its member states, the scientific community, policymakers, civil society and other stakeholders.

Its previous work has contributed to global normative instruments, including the Declaration of Ethical Principles in Relation to Climate Change adopted in 2017 and the Recommendation on the Ethics of Artificial Intelligence adopted in 2021.

UNESCO noted that the commission had recently published reports examining the ethics of quantum computing and space exploration and utilisation.

The organisation said the commission would now focus on new areas identified for its future work programme, including emerging ethical challenges arising from scientific and technological developments.

In inviting Oguamanam to join the commission, UNESCO expressed confidence in his expertise and active contribution to the development of its forthcoming reports.

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The organisation also said it expected members to contribute to “horizon scanning” of emerging ethical challenges and help identify issues that should be addressed in the commission’s next cycle.

Oguamanam’s appointment adds to Nigeria’s representation in international discussions on the ethical implications of science, technology and innovation.

He is expected to serve on the commission alongside experts from different regions and academic disciplines during the 2026–2029 term.

 

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