Technical Documents

  • Recommended Practices for Multivendor SON Deployment

    This document is the NGMN P-SmallCell Work Stream 2 (WS2) first deliverable. The main objective of WS2 is to promote multi-vendor deployment in HetNets, with a focus on SON interoperability. This first deliverable covers the following topics:

    • General multi-vendor interoperability assumptions and targets
    • Perimeter of the study
    • Performance metrics definition and performance targets in multi-vendor configurations
    • Reference SON architectures and interfaces and some implementation options
    • SON features description and analysis of multi-vendor deployments
    • Descriptions of potential interoperability issues for each SON feature and the recommended proposals for solving or reducing these issues.



  • NGMN Open OAM-IRP Ensembles Recommendations

    From their Release 99 onwards, 3GPP / SA5 adopted a new methodology to specify OA&M interfaces between Element Management System (EMS) and Network Element System (NMS). In their Management Reference Architecture, this interface is known as the Itf-N Interface.
    There is a need to define « Ensembles » / « Profiles » / « Packages », i.e. some grouping of IRPs to determine which IRPs are needed in a given network management application profile. It is obvious that the subset of IRPs needed for Bulk Configuration Management of an LTE network will be different from the subset of IRPs needed for Fault Management of an EPC network.
    The objective of this document is to present the IRP Ensemble concept, i.e. what it is and why it is important for MNOs but also for Telecom Equipment Manufacturers and 3rd-party tool vendors.[more]

  • P-NGCOR I / II Combined Deliverable

    With the introduction of LTE the requirements for OSS Capabilities and solutions changed completely. The network architecture became more flat. The challenge is to operate services with high quality, end to end, effectively and efficiently. There is a need to define converged OA&M requirements to ensure that the operational activities within the converged networks perform optimally. This NGMN requirements document has the aim to give guidance to SDOs and industry bodies in order to prioritize the work for the specification of solutions that fulfil the most important requirements for today's and future networks' management. This deliverable contains the following chapters:

    • Introduction
    • Generic Next Generation Converged Operational Requirements
    • Requirements for NGCOR Modeling and Tooling
    • High Level Requirements for Converged Operations
    • Requirements for Fault Management Interface
    • Requirements for Configuration Management
    • Requirements for Performance Management Interface
    • Requirements for Resource and Service Inventory Management
    • Business Scenarios for Network Sharing

  • Technical Report Service Quality Definition and Measurement

    Scope of research of the NGMN project "Service Quality Definition and Measurement" (P-SERQU) was to identify KPIs to monitor video QoE delivered over wireless networks. One of the original project objectives was to develop a correlation between radio and core network QoS KPIs to predict QoE of streamed video. Primary reason for that objective was to provide mobile network operators a mechanism to predict QoE based on the QoS measurements obtained with existing tools in their network. P-SERQU project has shown that for HTTP Adaptive Streaming (HAS) content, conventional objective measurement techniques such as PSNR and SSIM 1 give good result. [more]

  • Heterogeneous Networks Evolution and Operations - System Requirements and Architecture

    The purpose of this document is, based on the companion deliverable on Wi-Fi use cases, to derive system level requirements for cellular operator integration of Wi-Fi access networks. The system level requirements are mapped onto on-going standardization activities with the objective to identify any gaps, and conclude with recommendations on standardization and industry activities.[more]

  • Heterogeneous Networks Evolution and Operations - Use Cases

    Increasing complexity and heterogeneity of mobile networks may result in increasing operations divergence. This leads to a low level of end-to-end control of the system (policy enforcement) which finally results in low user experience (reselection, mobility, battery lifetime, automatic customer premises equipment configuration). The result of the project on Heterogeneous Networks Evolution and Operations is the definition of use cases and related requirements for fast and appropriate operation of heterogeneous networks. This deliverable is defining the use cases and high level requirements for WiFi interworking and interoperation with LTE networks. [more]

  • NGMN Recommendation on Base Station Antenna Standards

    This white paper addresses the performance criteria of base station antennas (BSAs), by making recommendations on standards for electrical and mechanical parameters, and by providing guidance on measurement practices in performance validation and production. It also addresses recommendations on applying existing environmental and reliability standards to BSAs. [more]

  • Multi-Antenna Technology - Multi-Antenna Future Requirements

    This deliverable is produced by the NGMN project MATE –Multi-Antenna technology. It provides the guideline for future multi-antenna development and deployment. The document concludes 4 main technical trends and requirements of multi-antennas and then introduces the solutions and key parameters as reference. Lastly, potential future antenna types are discussed.The intention is to provide a specific, yet generic, description of future multi-antenna requirements. [more]

  • NGMN Project Report: Multiband Multimode Requirements - Multiband Multimode Technology Evolution and Global Roaming

    This deliverable is the final deliverable of the project P-MBMM. The project investigated the possibilities to reach a common UE product implementation platform that supports all global operators’ near term LTE deployment scenarios including both FDD and TDD, and plus necessary legacy network support for needed fall-back mechanisms. The goal of the project was to create a better understanding of the practical possibilities and technology feasibility roadmap, while creating realistic expectations, driving requirements and alignment, and communicating a common message to the ecosystem. [more]

  • C-RAN Liaisons, Contributions to 3GPP ETSI on Collaborative Radio/MIMO, ORI Interface

    This document identifies the potential impact in standards from multi-vendor CRAN implementations. The starting point of this analysis is a set of requirements expressed in another subtask of the CRAN project, along with the definition of the CRAN building blocks. Some of these requirements mandate the possibility to build CRANs from building blocks designed by different vendors. These requirements impose open interfaces and interoperability between the relevant CRAN building blocks. Another set of requirements is purely design and implementation related, which is out of scope for this document. Standards bodies such as 3GPP, being enablers of multi-vendor interoperability, have defined open interfaces between the functional elements of the UTRA and E-UTRA radio access networks as well as the core network. These interfaces were not originally designed to support CRAN, but fortunately most of them can support many physical implementations of the functional CRAN architecture. It is the objective of this document to establish if such functional interfaces are suitable for CRAN, and identify possible gaps that will preclude interoperability. [more]

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