Verizon/Nokia Test 3GPP NR Spec using Multi-Carrier Aggregation

Verizon and Nokia reported testing “5G” New Radio (3GPP release 15) technology in the outdoors using multi-carrier aggregation to boost the transmitted signals. Verizon deployed its 28 GHz millimeter-wave spectrum in the trial, saying it cut latency to 1.5 milliseconds while transferring data at 1.8 gigabits per second.

“By continuing to push the technological envelope and make advancements like these, we’re driving the ongoing development of 5G technology and bringing it to life for our customers,” said Sanyogita Shamsunder, vice president, 5G Ecosystems & Innovation for Verizon. “Verizon continues to lead the way toward the realization of true 5G technology.”

Marc Rouanne, president of Nokia Mobile Networks, focused on the outdoor element of the testing in a press release. “Nokia is committed to supporting Verizon’s advanced effort to bring 5G to commercial reality,” he said. “Our successful trial pushes the testing distance and because it has been conducted outside, tests the interference variables in an outdoor environment. This is a major milestone for preparing Verizon for widespread 5G implementation.”

Transmitting interactive VR and 4k video streams outdoors required a consistent, stable, reliable 3GPP NR 15 network connection. Adding in carrier aggregation over four carriers increases the bandwidth and speeds of the transmissions to the levels promised by true 5G technology. When customers begin to use 5G NR technology, they will look to leverage that type of reliable connectivity to stream high-definition video without buffering, experience improved AR/VR capabilities, and use other mobile 5G solutions in ways we haven’t yet imagined.

Previous Nokia/Verizon 5G tests were done in the lab and were only brief data packet transmissions. The testing announced today is far closer to the way in which subscribers actually will use the 5G. Verizon says it will launch stationary 5G in Los Angeles, Sacramento and two other U.S. markets during the second half of the year. A mobile version will follow.

Nokia and Verizon are cooperating deeply on 5G. In February, the companies – along with Qualcomm – successfully tested a 3GPP-compliant NR 5G call. The call was made over licensed spectrum on a 5G NR prototype device from Qualcomm. The spectrum was provided by Verizon and the networking technology by Nokia. The test was conducted at a Nokia facility in Murry Hill, N.J.

The competition to announce 3GPP compliant NR deployment is intense. Nokia also is working with T-Mobile. Last week, the wireless carrier said that the companies completed a bi-directional over-the-air 5G data session on a 3GPP-compliant NR system at T-Mobile’s Bellevue, WA lab.

Note: All should know that 3GPP is not a standards body and that their NR specification has not been submitted to ITU-R WP 5D for IMT 2020.  The first 3GPP submission for IMT 2020 RIT won’t be till late July 2019.


6 thoughts on “Verizon/Nokia Test 3GPP NR Spec using Multi-Carrier Aggregation

  1. 3GPP New Radio (5G NR), release 15 reallocates some existing LTE bands and introduces new mmWave bands up to 40 GHz. While initial 5G devices will implement some type of point-to-point wireless link, smartphone manufacturers are already planning the introduction of their products that contain multiple radios. Adding yet another radio adds new coexistence challenges that designers must address.

    5G NR mid-band (1 GHz to 6 GHz) and high-band (above 24 GHz) operate in the same or in adjacent spectrum to other wireless communications systems. With devices covering multiple bands, there is increased risk for sideband interference or new shared spectrum issues. 5G NR devices will need to operate adjacent to or even in the same spectrum as existing wireless communications systems without causing interference. Designers of 5G chipsets and components need to know the different types of coexistence interference issues, where coexistence interference is likely to occur, and how to test for coexistence interference.

    There are many types of coexistence interference, but two primary issues require new coexistence testing. The first involves testing in-band and out-of-band emissions and testing the impact of the 5G NR emissions on other radio signals. These tests are important because you must ensure that a 5G radio doesn’t cause interference with other radios in the device, with other radios signals in the channel, or with signals in an adjacent spectrum. Such testing is similar to 4G coexistence issues, but the increasing number of radios in a device and the increasing number operating bands where 5G NR will operate will compound the problem.

    Second, because a goal of 5G is to improve data throughput, shared spectrum will be a key feature in 5G. To operate simultaneously in a shared environment, new procedures and protocols must be developed to ensure successful operation in the environment. At the highest level, these policies specify that devices must listen before they talk. Specifically, a device needs to detect coexistence traffic and allocate or reallocate spectrum dynamically based on what it hears. This presents potential quality of service issues (QoS) issues for device users caused by latencies while the radio switches channels. This will require special tests not previously done on cellular devices.–Coming-to-5G-New-Radio

  2. Millimeter waves, also known as extremely high frequency (EHF), is a band of radio frequencies that is well suited for 5G networks. Compared to the frequencies below 5 GHz previously used by mobile devices, millimeter wave technology allows transmission on frequencies between 30 GHz and 300 GHz. These frequencies are called millimeter waves because they have wavelengths between 1 mm and 10 mm, while the wavelengths of the radio waves currently used by smartphones are mostly several dozen centimeters.

    So far, only radar systems and satellites use millimeter waves. However, now some mobile network providers have also started using millimeter waves (for example, to transmit data between two fixed points, such as base stations). Nonetheless, the use of millimeter wave frequencies to connect mobile users to nearby base stations is an entirely new approach.

    There are two ways to increase the speed of wireless data transmission: increase the spectrum utilization, or increase the spectrum bandwidth. Compared to the first approach, increasing the spectrum bandwidth is simpler and more direct. Without changing the spectrum utilization, increasing the available bandwidth several times over can increase data transmission speeds by a similar amount. The problem is that the commonly used frequencies below 5 GHz are already extremely crowded, so where can we find new spectrum resources? 5G’s use of millimeter waves uses the second of the two methods to increase transmission speeds.

    Based on communication principles, the maximum signal bandwidth in wireless communication is about 5% of the carrier frequency. Therefore, the higher the carrier frequency, the greater the signal bandwidth. That’s why, among the millimeter-wave frequencies, 28 GHz and 60 GHz are the most promising frequencies for 5G. The 28 GHz band can provide an available spectrum bandwidth of up to 1 GHz, while each channel in the 60 GHz band can provide an available signal bandwidth of 2 GHz (a total available spectrum of 9 GHz divided between four channels).

    Comparatively, the maximum carrier frequency of the 4G-LTE band, 2 GHz, provides an available spectrum bandwidth of only 100 MHz. Therefore, using millimeter wave frequencies can easily increase the spectrum bandwidth by a factor of 10, allowing for a massive increase in transmission speeds.

    The use of millimeter waves has one major drawback. Millimeter waves are not capable of penetrating structures and other obstacles. Even leaves or rain can absorb these signals. This is also why 5G networks will have to adopt the small base station method to enhance traditional cell tower infrastructure.

    Because millimeter waves have high frequencies and short wavelengths, the antennas used to receive them can be smaller, allowing for the construction of small base stations. We can predict that, in the future, 5G mobile communication will no longer depend on the construction of large-scale base stations, but rather many small base stations. This will allow 5G to cover peripheral areas not reached by large base stations.

    Silicon Talks author Li Yirei said that the present 5G band plans adopted by major carriers use more traditional frequencies below 6 GHz to ensure signal coverage in open spaces, and use micro base stations with millimeter wave technology to provide ultra-fast data transmission indoors.

    Using millimeter waves and other 5G technology, engineers hope that 5G networks will not only serve smartphone users, but also play a critical role in self-driving cars, VR, IoT, and other fields.

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