GJR2368900R2340 87TS01E ABB耦合器模块

　　对于许多 CSP 而言，发展其网络以满足网络要求的种也是成本效益的方法是部署所有可用频谱，包括新的 5G 中频频谱。这将释放大量容量并提供的消费者体验。然后，可以通过选择大规模 MIMO 或传统无线电解决方案以及软件功能来进一步区分性能。新的 5G 中频段的覆盖通常比现有的 4G 频段更具挑战性，这使得具有波束成形能力的大规模 MIMO 比 RRU 更具优势。

　　为确保选择合适的无线电解决方案，CSP 应首先审查现有网络资产以及为满足其独特的业务目标而制定的策略。现有的网络资产——频谱、站点和设备——是决定如何发展网络的核心。频谱是 CSP 最有价值的资产，因为它直接影响可实现的网络容量和消费者体验。无线电站点是另一项重要资产，通常难以获得和维护，而且成本高昂。因此，CSP 通常希望在获取新站点之前限度地利用可用站点。

　　关于策略，CSP 必须考虑它所拥有的与提供哪些服务、提供什么 QoS 以及在网络中的何处提供这些服务有关的任何策略。不同服务的需求可以在容量和用户吞吐量方面映射到网络需求。

　　一旦收集到有关现有网络资产和策略的输入，下一步就是进行分析，以找到与网络中每个站点相关的性能要求和约束。关于服务（哪些、什么和在哪里）的问题的答案可以转化为特定的网络需求。当前的网络流量负载和预测的流量增长（包括新旧服务）提供了网络必须支持的流量（容量）的输入。

　　部署环境也对哪些无线电（硬件和软件）特性在网络性能方面产生了深远的影响。对于很多站点来说，对物理尺寸、安装方便、视觉影响小等都有要求。这些要求可能受场地建设限制、美学要求、风荷载和场地可达性等因素驱动，在某些情况下，它们是选择过程中的决定性因素。

　　根据对整个投资周期（通常为 5 到 7 年）每个容量的总拥有成本 (TCO) 的，决策过程的一步涉及选择满足以下要求和限制的无线电和功能解决方案每个站点在投资周期内。无线电解决方案工具箱包括大规模 MIMO 和传统无线电。与无线电解决方案相比，功能解决方案可以更渐进地实施，以响应新出现的需求。

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　　For many CSPs, the first and most cost-efficient way of evolving their networks to meet network requirements is to deploy all available spectrum, including new 5G mid-band spectrum. This will unlock substantial capacity and provide a superior consumer experience. Performance can then be further differentiated by the choice of radio solution, either Massive MIMO or conventional, along with software features. Coverage of new 5G mid-bands is often more challenging than for existing 4G bands, which gives Massive MIMO, with its superior beamforming capabilities, an advantage over RRUs.

　　To ensure the selection of the appropriate radio solution, a CSP should begin by reviewing the existing network assets along with the strategies that it has put in place to meet its unique set of business objectives. Existing network assets – spectrum, sites and equipment – are central to determining how to evolve a network. Spectrum is the most valuable asset for a CSP, as it directly affects the achievable network capacity and consumer experience. Radio sites constitute another important asset that are often difficult and expensive to acquire and maintain. Therefore, a CSP typically wants to maximize the use of the available sites before acquiring new ones.

　　With respect to strategy, a CSP must consider any strategies it has that relate to the question of which services to offer, what QoS to offer, and where in the network to offer these services. The requirements of different services can be mapped to network requirements in terms of capacity and user throughput.

　　Once the inputs about existing network assets and strategy have been gathered, the next step is to do an analysis to find the performance requirements and constraints relevant for each site in the network. The answers to the questions about services (which, what and where) can be translated into specific network requirements. The current network traffic load and the predicted traffic growth including old and new services provide input on the maximum traffic volume (capacity) the network must support.

　　The deployment environment also has a profound impact on which radio (hardware and software) characteristics pay off in terms of network performance. For many sites, there are requirements on physical size, ease of installation, small visual impact and so on. These requirements may be driven by factors such as site building constraints, esthetical requirements, wind load and site accessibility, and in some cases, they are the determining factor in the selection process.

　　Based on an assessment of the total cost of ownership (TCO) per capacity for the whole investment cycle (typically five to seven years), the final step in the decision-making process involves choosing radio and feature solutions that meet the requirements and constraints for each site over the investment cycle. The radio solution toolbox includes both Massive MIMO and conventional radios. Feature solutions can be implemented more gradually than radio solutions, in response to emerging requirements.