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首页Wi-Fi关键:速率、容量与干扰解决
Wi-Fi关键:速率、容量与干扰解决
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更新于2024-09-07
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"《使用Wi-Fi最关心的三件事》一文主要探讨了消费者在使用Wi-Fi时最为关注的三个方面:高数据速率、高容量以及良好的信号覆盖范围。数据速率的重要性在于满足现代用户的高速网络需求,然而,随着技术发展,容量问题成为焦点,因为同一路由器下的多个用户共享带宽可能导致速度减慢。传统的做法是所有用户连接在同一频道,但这种模式限制了资源分配。 文章提到,分布式Wi-Fi的出现解决了这些问题。通过将网络中的每个节点配置在独立的频段上,不同用户可以在各自的信道上进行通信,从而提高了带宽利用效率。例如,现代Wi-Fi支持40 MHz宽的信道,可以在2.4 GHz和5 GHz频段中实现10个信道的并发,这样不仅有助于减少与邻居的干扰,还能优化家庭网络内部的使用体验,特别是在多接入点的环境中。 此外,文中指出,尽管数据速率一度被视为关键,但实际上,有效管理和利用Wi-Fi的容量同样至关重要。随着网络基础设施的进步,如Qorvo等公司的无线连接业务单元在提供易连接、易安装和分布式Wi-Fi解决方案方面扮演着重要角色,不断推动Wi-Fi技术的发展,以更好地满足消费者对于高速、稳定网络的需求。 本文深入剖析了Wi-Fi技术在实际应用中所面临的挑战和改进方向,强调了如何通过提升容量和优化信道分配来提升用户体验,这对于理解现代Wi-Fi市场趋势和技术发展趋势具有重要意义。"
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November 2017 | Subject to change without notice.
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www.qorvo.com
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Where Is Wi-Fi Heading?
By Cees Links, GM of Qorvo Wireless Connectivity Business Unit
Formerly Founder & CEO of GreenPeak Technologies
What Matters To Customers?
There are three things that customers care most about when it comes to using Wi-Fi:
Of course, there are other considerations, like easy to connect and easy to install. There has been great progress
on the first, and ease of installation is getting better with distributed Wi-Fi in a box (which also indirectly addresses
the range issue). There is also the murkier issue of avoiding interference from neighbors, which may or may not
contribute to a slow Wi-Fi issue.
Capacity
While higher data rate may seem to be the most important issue, let’s first look at capacity
– multiple users using Wi-Fi at the same time.
Most people today have a router, and everyone connecting to that router is using the same
Wi-Fi channel. Which also means that those users are sharing the same bandwidth and
the same raw data rate. When people are using a repeater, that bandwidth gets shared
even more – you talk with your repeater on the same channel as your repeater talks with
your router, effectively doubling the traffic on that same channel.
Here is where distributed Wi-Fi comes in and makes dramatic improvement. Every node on the network can talk
on its own frequency band with the end user, while simultaneously communicating on other frequency bands with
the main router connecting to the Internet.
To put this in perspective, consider that the first Wi-Fi effectively used 3 channels (in the 2.4 GHz band) to stay
away from using the same channel as the neighbors. Today, “modern Wi-Fi” uses 40 MHz-wide channels and
effectively supports 10 of those channels in the 2.4 GHz and the 5 GHz bands, making it not only easier to stay
away from the neighbors, but also to optimize usage in a home by enabling different users using different
channels and also allowing a wireless infrastructure in the home for distributed Wi-Fi with multiple access points.
Distributed Wi-Fi – Not As Simple As It Sounds
If talking about different channels in Wi-Fi makes it sound as simple as digital radio and changing channels with a
push of a button, the reality is a little harsher. Cheap Wi-Fi radio technology causes easy bleeding from one
WHITE PAPER
High data rate
High capacity
(i.e., multiple, simultaneous users)
Good range
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