Figure 2: A typical antenna array (A) is made up of rows and columns of individual dual-polarized antenna elements (B). Partitioning the antenna into small sub-arrays results in high-gain beams that can be steered over a large range of angles and effectively addresses the interference problems seen with conventional systems. In cases where UL coverage is limiting, UE feedback offers more robust operation, whereas full UL channel estimation is applicable in scenarios with good coverage. This is ideal for urban areas, where the acquisition of new site space is difficult and deployments are time consuming. Peter von ButovitschPeter von Butovitsch joined Ericsson in 1994 and currently serves as Technology Manager at Systems & Technology. It brings 5G to everyone, everywhere, much faster. SU-MIMO can be achieved by sending different layers on different polarizations in the same direction. In multi-path scenarios, where the radio channel comprises multiple propagation paths from transmitter to receiver through diffraction around corners and reflections against buildings or other objects, it is beneficial to send the same data stream in several different paths (direction and/or polarization) with phases and amplitudes controlled in a way that they add constructively at the receiver . The hybrid version (HybridAIR) attaches an active midband TDD antenna on top of the 2-5G FDD passive panel. The timing is now right for the telecom industry to make the technology shift to advanced antenna systems (AAS). Further, the vertical coverage range needs to be large enough to cover the vertical spread of users. Antenna arrays can be divided into sub-arrays (C), with each sub-array (D) connected to two radio chains, normally one per polarization. Due to larger ISDs and decreased vertical spread of users (lower buildings), the vertical coverage range can be decreased compared to dense urban high-rise; hence, larger vertical sub-arrays can be used and there is less gain from vertical beamforming. AIR 8828 FDD AIR8828. BT said … As part of generalized beamforming, it is also possible to reduce interference to other UEs, which is known as null forming. The scenarios, including relevant characteristics, suitable AAS configurations, and performance potential are depicted in Figure 4. Compared to conventional systems, this solution provides much greater adaptivity and steerability, in terms of adapting the antenna radiation patterns to rapidly time-varying traffic and multi-path radio propagation conditions. Many MNOs choose this strategy as it is often difficult, time consuming and expensive to acquire and deploy new sites. For conventional non-beamformed systems such as 2T2R, the vertical spread of users in combination with the small ISD creates a situation where many users are outside the vertical main beam of the nearest base station. Maximizing the antenna area is important for improving the UL cell-edge data rates, especially for higher frequency bands employing TDD. There is generally a mix of building types, which creates multipath propagation between the AAS and the UE. A good trade-off between complexity and performance could be achieved with 64 radio chains controlling small sub-arrays. Today's complex antenna systems with multiple frequencies and multiple technologies on the same radio site, put great demands on the ability to create effective solutions. Radio 4408 for TDD. He is currently a researcher at Systems and Technology working with concept development and network performance for NR with a focus on advanced antenna systems. End-user performance requirements continue to increase, putting high demands on the radio access network (RAN) to deliver increased coverage, capacity and end-user throughput. SU-MIMO can also be achieved in a multi path environment, where there are many radio propagation paths of similar strength between the AAS and the UE, by sending different layers on different propagation paths, as shown in the bottom left quadrant of Figure 1. Today he is a Principal Engineer working in Product Development Unit 4G5G, where he drives the overall strategy and solutions for AAS in 4G and 5G. Expand Collapse. He has an M.Sc. Although often very effective, transmitting energy in only one direction does not always provide an optimum solution. AIR 4488 Triple-band antenna, 4T/4R, 3 bands, low-band and mid-band, 7 frequency bands AIR4488 3. Therefore, large vertical sub-arrays with small vertical coverage areas are appropriate. Spatial multiplexing, here referred to as MIMO, is the ability to transmit multiple data streams, using the same time and frequency resource, where each data stream can be beamformed. By combining multi frequency low band support with the AIR 3239, in a single unit, no extra footprint is needed for massive MIMO 5G. Since each sub-array is normally connected to two radio chains and each radio chain is associated with a cost in terms of additional components, it is important to consider the performance benefits of additional steerability when choosing a cost-efficient array structure. For UL reception of data signals, channel estimates can be determined from known signals received on the UL transmissions. 2. As with SU-MIMO, the total DL power is shared between the different layers, and therefore the power (and thus SINR) for each user is reduced as the number of simultaneous MU-MIMO users increases. AAS radio = Hardware unit that comprises an antenna array, radio chainsand parts of the baseband, all tightly integrated to facilitate AAS featuresAAS feature = A multi-antenna feature (such as beamforming and MIMO)that can be executed in the AAS radio, in the baseband unit or bothAAS = AAS radio + AAS featuresConventional system = Passive antenna + remote radio unit comprisinga low number (2, 4 or 8) of radio chainsDual-polarized antenna element = Combination of two antenna elementswith orthogonal polarizations with the purpose of enabling diversity anddoubling the number of antenna elements on a given physical area. Antennas for 5G: Samsung, Intel, Ericsson, and Huawei and more have begun extending their portfolios. The potential is large when the received signal quality is high and the streams do not interfere with each other. Radio 2238 Triple-band radio … He holds an M.Sc. without impairing the installation object's appearance or design, or people's line of sight. New 20+1-Port Passive Antenna with 2L8M Bands Antenna 6600 2L 8M 2.0m. The good coverage and large spread of users mean that the potential for reciprocity-based beamforming and MU-MIMO with a relatively large number of multiplexed users is high, and the AAS should support these techniques. Today, the IP landscape related to antenna for 5G is still unsettled. As a result, AAS significantly enhances network performance in both uplink and downlink. Each sub-array has a certain radiation pattern describing the gain in different directions. by Linda Hardesty | Apr 22, 2020 12:31pm. Radio 8823 8T/8R radio 3.5GHz band. Ericsson Radio System comprises hardware, software and services for radio, RAN Compute, antenna system, transport, power, enclosure and site solutions– all run by a common management system. Billy HoganBilly Hogan joined Ericsson in 1995, and has worked in many areas of core and RAN design and systemization, including as the Senior Specialist for Enhanced Uplink in WCDMA. Using larger sub-arrays for a given antenna area means that fewer radio chains are required. Ericsson Massive MIMO 5G integrated passive antennas 1. Using a commercially available massive MIMO radio with 64 antennas from Ericsson and OnePlus 8 5G smartphones T-Mobile sells today, 16 unique data streams were transmitted. (Image Source: Bevin Fletcher/Wireless Week) Since the radio channel is reciprocal (the same in UL and DL), detailed short-term channel estimates from UL transmission of known signals can be used to determine the DL transmission beams. Along the walls at one of Ericsson's demos, the strip was embedded behind a … This is referred to as reciprocity-based beamforming. To address these needs and more, Ericsson has designed a new hybrid site solution for excellent multi-standard capabilities and 5G performance. OUR KEY BENEFITS. Vertical beamforming, however, does not provide any significant gains as the vertical user spread is low. The 5G site grid needs to provide wide mid-band capacity while re-using established sites and minimizing additional footprint. The Hybrid AIR single box solution means less time and complexity to secure 5G site approval, and consequently, easier and cost-effective deployments. This is referred to as generalized beamforming, as shown in the upper right quadrant of Figure 1. Anders FuruskärAnders Furuskär joined Ericsson Research in 1997 and is currentlya senior expert focusing on radio resource management and performanceevaluation of wireless networks. This is achieved by controlling the transmitted signals in a way that they cancel each other out at the interfered UEs. The demonstration, tested on a live network, used an Ericsson 5G mmWave high power antenna-integrated radio, equipped with Ericsson software. The new solution, tested on a live network, used the new Ericsson 5G mmWave high power antenna-integrated radio AIR 5322, installed at the mobile site on Via Oriolo Romano in Rome, equipped with Ericsson’s extended range software. Ericsson Massive MIMO Macro 5G layer antennas 1. Working with Ericsson and deploying the Hybrid AIR, we are now delivering wide mid-band capacity, while re-using established sites and minimizing additional footprint, with the Hybrid AIR. There are two basic ways of acquiring the DL channel knowledge between the UEs and the AAS: UE feedback and UL channel estimation. Ericsson has announced two new active-passive antenna (APA) designs with integrated radio. 3 dB). Under the partnership, the Swedish company will provide Xplornet with its Ericsson Radio System to enable a smooth migration from 4G to 5G. The … The suitable channel knowledge scheme to use depends on UL coverage and UE capabilities. We help service providers maintain cutting-edge infrastructure that meets today’s needs and future growth. This calls for small sub-arrays, which have a wide beam in the vertical direction. Ericsson Spectrum Sharing introduces a new way of rolling out 5G that re-uses hardware/spectrum/sites, increases coverage of mid/high band, and offer a clear path to 5G stand alone, allowing operators to shift capex investments from new sites to new 5G stand alone use cases. Deutsche Telekom’s US subsidiary, T-Mobile, has signed a five-year, 5G roll-out contract Ericsson. Reciprocity-based beamforming schemes will work for most users, but there will be users with poor coverage that need to rely on techniques such as feedback-based beamforming. Rural or suburban macro scenarios, as depicted in section C of Figure 4, are characterized by rooftop or tower-mounted base stations with inter-site distances ranging from one to several kilometers, low or medium population density and very small vertical user distribution. Swisscom is the leading provider of communication, IT and entertainment in Switzerland. The potential diminishes when the mutual interference between streams increases. Similarly, when receiving, beamforming is the ability to collect the signal energy from a specific transmitter. Another main driver for AAS is the need to meet coverage requirements on new and higher frequency bands. The test, set up on the TIM 5G network, was based on an Ericsson 5G mmWave high-power, antenna-integrated radio AIR 5322, installed at the mobile … Bo Göransson | Wireless@KTH | 5G & the multi antenna advantage | 2016-10-06 | Page 28 Ericsson 5G Roadmap 1st 5 Gbps throughput –June 2014 1st Dual Connectivity LTE-5G 1st Multipoint Connectivity with distributed MIMO 5G Radio Prototype field trials in 2016 Ericsson 5G field trial gear achieves peak downlink throughput over 25 Gbps with MU-MIMO Ericsson (ERIC) Telefonaktiebolaget LM Ericsson (ERIC) is a Swedish telecommunication equipment … In dense urban high-rise scenarios with tall buildings and high subscriber density, an AAS with beamforming capabilities in both vertical and horizontal directions is the most beneficial option. Horizontal beamforming is a very effective feature that provides large gains. The more antenna elements there are, the higher the gain. In suburban/rural scenarios, where vertical beamforming is usually not needed, the performance of a more cost efficient AAS with fewer radio chains is often sufficient. For FDD, where different frequencies are used for UL and DL, the channel is not fully reciprocal. Yole Développement: Antennas for 5G and 5G-related applications: a young but already highly-competitive IP domain. DL longer-term channel knowledge (such as dominant directions) can, however, be obtained by suitable averaging of UL channel estimate statistics. And one of the things is trying to integrate 5G capability with standard passive antennas.” “Passive antennas will cover lowband frequencies (600-900 MHz) and then there are some midband arrays in current products for 14-2600 MHz. The purpose of MIMO is to increase throughput. Ericsson Multi-band 5G radios 1. The achievable capacity gains from MU-MIMO depend on receiving each layer with good signal-to-interference-and-noise-ratio (SINR). 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