The fifth generation (5G) wireless access technology, known as New Radio (NR), features flexibility to support a variety of usage scenarios. One of the basic concepts in 5G NR is bandwidth part (BWP), which is, at a high level, a set of contiguous resource blocks configured inside a channel bandwidth. BWP spans across many 5G NR specifications developed by the 3rd Generation Partnership Project. Understanding how BWP operates is vital to understanding 5G NR. This article provides an overview of the essentials of BWP in the NR technical specifications. We describe fundamental BWP concepts, BWP configuration methods, and BWP switch mechanisms. We also discuss user equipment capabilities in terms of BWP support and share our thoughts on use cases of BWP for NR deployments.

中文翻译：

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5G 新无线电中的带宽部分入门

第五代（5G）无线接入技术被称为新无线电（NR），具有支持多种使用场景的灵活性。5G NR 中的一个基本概念是带宽部分 (BWP)，在较高级别上，它是一组配置在信道带宽内的连续资源块。BWP 跨越第三代合作伙伴项目开发的许多 5G NR 规范。了解 BWP 的运作方式对于了解 5G NR 至关重要。本文概述了 NR 技术规范中 BWP 的要点。我们描述了基本的 BWP 概念、BWP 配置方法和 BWP 开关机制。我们还讨论了 BWP 支持方面的用户设备功能，并分享了我们对用于 NR 部署的 BWP 用例的想法。