It means that unless carriers install nodes in every lane, street, and neighbourhood, ... Nokia, Ericsson, Samsung, and ZTE sell 5G network chips to carriers to build base stations and carrier nodes. To decrease overheads, the emphasis is on striving to keep the guard periods short, while still catering for the desired effects. These applications require synchronization accuracy in the same range as the TSN. Industrial automation scenarios often involve multiple timing domains. The optimal solution for a specific network may depend on existing synchronization feature support of the network and network elements, transport network modernization plans that improve synchronization support, as well as operator preferences. The fundamental technologies to address these requirements come from the GNSS, which provides the basic technology for a time synchronization master, enabling global distribution of a UTC-traceable reference. Moreover, the time error can be better estimated during holdover, making it possible to take consequent actions per service (TDD, for example). He is currently an active contributor to ITU-T SG15 Q13 (serving as rapporteur) and other relevant synchronization standardization bodies, as well as serving as the chair of the International Timing and Sync Forum (ITSF). Continuous delivery and deployment of software is helping Swisscom turn on 5G. The new 5GC architecture called as Service-Based Architecture (SBA), is built using IT network principles and cloud native technology. Features requiring stricter synchronization are generally implemented between neighboring base stations. The distribution of time-phase and frequency synchronization has been addressed in several ITU-T recommendations [8]. An important aspect of this is that a base station may use PTP for the delivery of both time synchronization and frequency synchronization. There are guidelines for this in G.8271.1 [8]. The Ericsson Packet Core Firewall provides a fusion of user plane security and advanced security functions. … This includes using Precision Time Protocol (PTP) and radio interface-based methods to synchronize distributed radio units in the evolved RAN architecture, where the upper and lower parts of the 5G New Radio (NR) RAN are separated in the different logical units: the centralized unit (CU), the distributed unit (DU) and the radio unit (RU). He also contributes actively to ITU-T SG15 Q13 and IEEE 1588. What matters is the relative frame timing alignment at the receiver. Start the core network transformation journey for 5G with Ericsson and get ready for future … Here, Ericsson´s 5G platform plays an instrumental role, in helping you build a better 5G network in a better way. This includes multiple operators in both the US and South Korea, as well as in Switzerland, Australia and UAE. However, during technology shifts and business transformations it becomes crucial. The RANs use different sources, often in combination, to provide synchronization characteristics to match the network use case and services delivered. In 3GPP New Radio (NR), cell phase synchronization is specified as 3µs [2] – that is, the same as for LTE. The RU is the main user of synchronization and it may also be synchronized by a timing reference generated directly at the radio site. ​, Currently, the vast majority of commercial 5G deployments are based on NR non-standalone (NSA) technology which uses existing LTE radio access for signaling between devices and the network, and Evolved Packet Core (EPC) networks which are enhanced to support 5G NSA. To limit the effects of asymmetry and packet delay variation that could be created by the network nodes (switches and routers, for example), IEEE 1588 has specified the “boundary clock” and “transparent clock” functions with event message timestamping in the hardware layer. Countless devices and services will also use 5G such as self-driving cars, remote surgery and other innovations as well. A core network for 5G is more than 5G Core. Ericsson and BT to deliver dual-mode services using '5G Core' | … GNSS services include GPS, BDS (the BeiDou Navigation Satellite System) and Galileo [6], and are offered by several space agencies. Industrial automation is just one example of a use case that requires accurate timing and is likely to generate additional synchronization requirements in the near future. For many features, what matters more than anything else is the relative time error between neighboring base stations. Two PTP profiles have been defined for the use of PTP in telecom – G.8275.1 (PTP with full timing support from the network) and G.8275.2 (PTP with partial timing support from the network) [8]. Many of the commercial 5G networks going live around the world today use TDD. RANs are designed to optimize service performance and reliability, and synchronization is a vital enabler. Accurate and reliable synchronization has long been a fundamental prerequisite for the correct operation of telecommunications networks. Telefonica currently offers 5G connectivity to approximately 1,300 towns and cities across the Spain, according to the report. The challenge Increase the port capacity and safety with Time synchronization is also required in FDD networks when different radio coordination features are used. The Future Network Architecture needs to provide for a lot of various types of functionality and at the same time it is required to be able to deploy that functionality in different physical locations. Nokia has announced that its Smart Node portfolio of All-in-One base stations for 5G indoor use will be based on chipsets from powered by Qualcomm Technologies Inc. joined Ericsson in 2002 and currently works as a researcher at Business Area Networks, where much of his time is spent on analysis and solutions related to synchronization, including contributions to 3GPP standardization. The data carried between a DU and an RU uses Ethernet-based transport. Ericsson estimates the number of subscriptions reaching one billion by the end of 2023. While there is no change to fundamental synchronization requirements in the move from 4G to 5G, wider use of TDD radio technology and growing demand for new network architectures that support demanding 5G use cases have made the need for time synchronization more critical in 5G. History Foundation. Prior to 5G, the 3 rd Generation Partnership Project (3GPP) focused entirely on mobile networks. Ericsson leads the implementation of 5G worldwide, partly through the use of massive MIMO technology. has worked with timing and synchronization distribution within the RAN base station and with air transmission accuracy for 20 years. Specified by IEEE 1588, PTP has been selected by the telecom industry to distribute accurate time synchronization from an accurate master, such as GNSS. In 5G networks the situation is different because time and phase synchronization is more often needed compared with previous generations of radio networks, due to factors such as wider use of TDD or the need for coordination between NR and LTE. Figure 1: Synchronization in new network scenarios. Ericsson's 5G New Radio RAN is an integral component of its 5G platform and includes software support for shift from LTE (a 4G mobile communications … It is an evolution of our powerful virtualized portfolio, designed for cloud deployment, consisting of our Cloud Packet Core, Cloud Unified Data Management (UDM) and Policy and Signaling Controller products. From that it was born a new core network 3GPP standard and architecture known as 5G Core (5GC). 5G capable networks are now a reality around the globe, however, these new 5G networks will co-exist side by side with 4G ones for many years, while at the same time efficiencies need to be improved in order to capture new opportunities.​ Ericsson’s dual-mode 5G Core is built on cloud-native, microservices-based technology and combines Evolved Packet Core (EPC) and 5G Core (5GC) network functions into a common multi-access and cloud-native platform that supports 5G and as well as previous generations for optimized footprint and TCO efficiency. The 5G Core (5GC) is the heart of the mobile network where ultra-connectivity translates into service differentiation and business flexibility. As shown in Figure 4, a fairly typical 5G mobile network can combine methods like GNSS and OAS at base station sites, time and frequency distribution via the transport network, and redundancy and holdover functions in the nodes. 5G New Radio introduces a new type of wireless backhaul known as integrated access and backhaul that is of particular interest for dense deployment of street-level radio nodes.

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