What is one requirement identified for next-generation access network architectures?

In the context of next-generation access network architectures, expanded troubleshooting capability is a crucial requirement. As networks become more complex due to the increasing number of devices, applications, and services being delivered over them, having robust troubleshooting capabilities allows network operators to quickly identify and resolve issues that may arise. This is essential for maintaining high service quality and ensuring user satisfaction, particularly as the demand for reliable and seamless connectivity continues to grow.

Troubleshooting capabilities can involve advanced monitoring tools, real-time diagnostics, and analytics that enable proactive maintenance and quicker fault resolution. This requirement complements the overall goals of next-generation networks, which include not only delivering enhanced performance and capacity but also ensuring reliability and resilience against disruptions.

The other options, while potentially relevant in different contexts, do not capture as critical a need for next-generation networks in the same way. For instance, while higher bandwidth is important for residential users, it is more of a desired outcome rather than a fundamental architectural requirement. Similarly, reduced installation costs and increased physical network size can contribute to a network's efficiency or reach, but they do not address the immediate need for operational responsiveness that is intrinsic to expanded troubleshooting capabilities.