The fifth generation (5G) mobile network is standardized and developed to explore the mobile market beyond 2020. In response to the diverse strategies of 5G deployment, five alternative network architectures have been proposed to 3GPP by different mobile operators. To fulfill the urgent deployment requirement from some operators, an early drop of 5G, termed as non-standalone (NSA) new radio (NR), was completed at the end of 2017. After that, the standardization of a new 5G system, including th standalone (SA) new radio access network, was finished in June 2018. This article analyzes and compares the SA NR and NSA NR deployment modes in terms of coverage, network capability, interworking between 4G and 5G, complexity and cost of network deployment, and the latest industry progress. NSA NR performs better in interworking performance in the initial phase, while SA NR performs better in network capabilities, device performance, simple network deployment, and cost efficiency. 5G SA NR is recommended for operators who have the ambition to explore new opportunities in the vertical and enterprise markets.

中文翻译：

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5G 部署：从运营商的角度看独立与非独立

第五代（5G）移动网络的标准化和发展是为了探索2020年以后的移动市场。针对5G部署的多样化策略，不同的移动运营商已经向3GPP提出了五种替代网络架构。为满足部分运营商迫切的部署需求，2017年底完成了被称为非独立（NSA）新无线电（NR）的5G的早期下降。此后，新的5G系统的标准化，包括第一个独立（SA）新无线接入网，于2018年6月完成。 本文从覆盖范围、网络能力、4G和5G互通、网络部署复杂度和成本等方面对SA NR和NSA NR部署模式进行了分析和比较，以及最新的行业进展。NSA NR在初期的互通性能上表现较好，而SA NR在网络能力、设备性能、网络部署简单、性价比等方面表现较好。5G SA NR 推荐给有志于在垂直和企业市场探索新机遇的运营商。