芯科播客－Wi-SUN赋予智慧城市灵活性、安全性和互操作性

SiliconLabs 2021-07-15 19:00

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芯科播客－智慧城市（Smart City）主题讨论新上线！本次播客由Silicon Labs渠道营销高级经理Kyle Dando先生主持，通过与Silicon Labs无线产品经理Soumya Shyamasundar女士的对谈来分享关于智慧城市发展的趋势以及备受瞩目的Wi-SUN技术知识，您可以收听完整播客并通过下方的摘要内容来学习物联网市场新知。

Kyle:

What do you see growing in the Smart City for us in 2021?
您认为智慧城市在2021年对我们而言将有哪些方面的增长？

Soumya：

Smart City verticals were historically very fragmented with customers using numbers of different proprietary technologies. It was fairly inexpensive to use some of these proprietary technologies and the other reason was customers had the full control of the network. The biggest disadvantage of that was they were locked into one specific hardware vendor, and they also had to maintain a full team in house to ensure the proprietary technology is routinely upgraded against security threats and so on and so forth.

智慧城市在发展的历史上非常分散，客户使用了许多不同的专有技术。使用一些专有技术的价格是便宜的，另一个原因是客户可以获得控制网络的完整权限。不过这样做的最大缺点是它们会被绑定在特定的硬件供应商上，同时他们还得设立专属的团队来保证这些专有技术能够定期升级以应对安全威胁等。

So this is changing, and especially in 2021, most customers are slowly trying to move away from proprietary roll your own technologies to a standards based solution, mainly for flexibility, security, ease of use, and you know, to end to avoid vendorlock in.

这种情况正在改变，特别是在2021年，大多数客户正在慢慢地尝试摆脱专有技术，并将采用自有技术的设计转化为基于标准的解决方案，这主要是为了灵活性、安全性和易用性，以及避免被捆绑在特定厂商的方案。

Wi-SUN stands for wireless smart ubiquitous networks, and it is an IP based mesh network specification based on existing proven IEEE and IETF standards, so it is a standard based technology. It's a completely open specification and the radio can come from any hardware vendor, thus, you know, giving customers complete flexibility on how they choose to design their networks.

Wi-SUN可作为智能的无线网络，其基于IP网状网络规范，以及现有的IEEE和IETF标准，所以是一种基于标准的技术。Wi-SUN是一个完全开放的规范，可以通过来自任何硬件供应商的产品来支持其无线电通信，这使得客户灵活地选择如何设计他们的网络。

The other aspect of Wi-SUN is security is built in, as part of the specification, it does define a certificated based security, that's implemented inside the chip itself or on the radio itself. With Secure Vault, and you know servers like the triple A server or radio server does the authentication piece of it. So the security is becoming more and more important and Wi-SUN sort of addresses that key aspect within or as part of the specification itself.

另一方面，Wi-SUN具备内置安全性，作为标准规范的一部分，其定义了一个基于认证的安全性机制，并可通过Secure Vault 软件实现在芯片或无线电装置上，和比方说AAA服务器或无线电服务器负责认证的部分。所以安全性变得越来越重要，Wi-SUN在某种程度上解决了规范本身的关键安全性。

Wi-SUN is a great fit, not only for utility applications like smart electric metering or water and gas metering but also fits very well into the Smart City infrastructure type applications, like street lighting，parking，environmental sensors as well as some of the emerging applications that we will see in 2021 for sure, EV charging and things like that. So this is where we see the market moving. And Wi-SUN, because of its IP based specifications, fits very well into some of these newer applications that are expected to ramp up in 2021.

Wi-SUN不仅非常适用于电力、水和燃气计量等公用事业应用，也相当适合智能城市基础设施类型的应用，比如路灯、停车、环境传感器以及一些我们可望在2021年看到的新兴应用，包括电动汽车充电和其他相关产品。上述优势将是带动市场转向采用Wi-SUN的原因，因为它的IP 规格非常适合这些新的应用程序，预期将在2021年增加采用。

Kyle:

It sounds like a similar conversation that we have when we talk about CHIP, same thing it’s we have all these proprietary networks, that have been built up and people aren't as aware of that they're the same amount of proprietary networks in cities, so I can imagine what you're saying is it's the same thing we're trying to adopt these standard based IP, very popular, a very well-built networks, but make sure that you can choose your application…not necessarily be locked into a network all the time. That makes a lot of sense.

这听起来就像我们谈论CHIP（现改称Matter）时的谈话一样。我们具备各种专有网络，不过大家并没有意识到他们生活的城市中也存在著许多已经被建置的专有网络，所以我可以想象你所说的是我们正在努力通过采用基于标准IP规范，非常受欢迎且构建良好的网络来改变此状况，以确保可选择您的应用程序，并且不必总是被绑定在特定网络中。这都很有道理。

And then security like you said, I mean, come on… every conversation I have at Silicon Labs we're talking about security. And you know the attacks are occurring so I'm assuming what you're saying all these Smart Cities they're concerned…they invest money in these networks. Security has to be a proven security solution that can grow with they're investing in.

此外你也提到关于安全问题，这是每一次在芯科播客讨论时都会谈到的部分。如你所知，网络攻击是持续存在的，所以我假设你所说的这些智慧城市的考量是为了保障投资网络的花费。网络安全必须是一种经过验证的安全解决方案，能够随着用户的投资而增长。

Soumya：

Absolutely security is becoming more so important on the enterprise side, especially with infrastructure, right.You don't want your streetlights to be hacked by somebody, and you know you get a call from the City of Boston Mayor saying that hey… your streetlights are hacked, it's just not happening. There is no way that security cannot be a big portion of any technology that's deployed on the enterprise side, and that's why Wi-SUN has made it as part of the spec and it is a mandatory requirement that every chip vendor or every solution provider gives as part of the overall solution offering. And Silicon Labs is no different, we will have security on our chips, as well as on the stack side of things, and this will sort of enable the customer to integrate security from the ground up rather than thinking about it as an afterthought.

无庸置疑，安全性在企业端变得越来越重要，特别是针对基础设施方面。你肯定不希望路灯被其他人入侵，之后接到迈阿密市或波士顿市市长的电话说你的路灯被入侵了，这绝对不希望发生。安全性必定是任何技术部署在企业端上的一个重要环节，这就是为什么Wi-SUN将其作为标准规格的一部分，并强制要求每个芯片供应商或解决方案提供商将安全性作为整体解决方案的一部分。SiliconLabs也将支持此一作法，在我们的芯片及协议堆栈上提供安全功能，这将使客户能够从设计的基础上开始集成安全性，而不是把它看作是事后加强的作法。

Kyle:

I looked through the information that you shared with me before our conversation, and I noticed there was a lot of discussion about this Field Area Networks (or a FAN), and so you already kind of introduced it. Wi-SUN, for example, as a IP based network… where are these networks? What is a FAN? Can you talk to the listeners about something that Smart Cities use?

我看了你在我们谈话前告诉我的信息，并注意到有很多关于FAN（FieldArea Networks），而你也已经介绍了这部分。以Wi-SUN为例，作为一个IP式网络，它将会出现在哪些地方？什么是FAN？你能和听众谈谈关于智慧城市如何应用Wi-SUN吗?

Soumya：

FAN stands for Field Area Networks like you just mentioned, and Field Area Networks are characterized by large geographical coverage areas, a large number of connected devices, and now also a need to support remote monitoring in an economically feasible framework, so that is what is called as FAN. Historically utilities had all these attributes, the sense, you know utility networks cover large geographic area they have millions of devices, millions of connected devices, and there is a need to support remote monitoring, real-time monitoring, outage management and things of that sort, in a very economically feasible framework.

好的，FAN 代表现场区域网络，就像你刚才提到的特点是地理覆盖范围大，有大量连接的设备，而且现在也需要在经济可行的框架下支持远程监控，这就是所谓的FAN。在历史上，公用事业拥有这些属性，你知道的，公用事业网络覆盖了很大的地理区域并且有数百万连接的设备，同时需要支持远程监控以在经济可行的框架下实时进行停电管理之类的操作。

Now this analogy can be applied to the city site as well, because with Smart Cities, we will have thousands of streetlight nodes, thousands of environmental sensor nodes as well as parking, where a technology like Wi-SUN provides the benefits of long range as well as a secure self-healing mesh as these cities start to build out. That's why FAN is as much as applicable. As it is on the utility side as well, it's just a framework that includes a large scalable infrastructure network.

现在这个模式也可以被应用到城市站点，因为在智慧城市中，我们将有成千上万的街灯节点，环境传感器节点运用Wi-SUN等技术提供的远程优势，以及安全可自愈的网状网络。这就是为什么FAN非常适用在公用事业方面，它只是一个包含大型可扩展的基础设施网络框架。

Kyle:

That's great! Yeah... just I've had experienced with, you know, the PAN, heard of WLAN, heard of MAN, so I guess we just needed a new one for FAN, and I, you know, a field like you know a lot of cities don't have many fields in them, but I guess that's probably the Initial naming of it, but thanks for the explanation. That was great. So you keep talking about Wi-SUN, and I understand that is a huge developing standard like you said, and it looks like there's a big group of customers or companies right that are, I think the reason they're doing that, as you mentioned in your first response to interoperability.

好的，我经历过你知道的PAN，也听说过WLAN。所以我想我需要再了解一个新的FAN；然而就像你知道的很多城市并没有太多空间，FAN可能只是初始的命名，谢谢你的解释。你一直提到Wi-SUN，这是一个影响巨大的发展标准，而且看起来有一大群客户或公司支持，我认为他们这样做的原因，正如你先前提到的有关互操作性的回答。

What type of interoperability are we talking about? Are we talking the vendors are going to be interoperable between each other, or is it just that you can plug in a different one? What is the interoperability that you're talking about?

我们谈论的互操作性是什么类型，指得是供应商之间的互操作性，抑或只是希望设备可以接入其他不同的设备？总体来说，你所说的互操作性是什么呢?

Soumya:

So Wi-SUN is an IP based, existing standard space technology specifically suited for large scale infrastructure applications like smart metering street lighting, and other Smart City applications. The interoperability piece here refers to three components or three aspects, one is interoperability on the hardware side. Since Wi-SUN is an open standard，any radio network or any radio vendor can support the PHY or Wi-SUN's PHY on their radios, and that promotes interoperability and flexibility.

其实Wi-SUN是一种基于IP的现有标准空间技术，特别适用于大规模基础设施应用，如智能计量路灯和其他智能城市应用。这里的互操作性指的是三个组件或三个方面，首先是硬件方面的互操作性，由于Wi-SUN是一个开放的标准，任何无线网络或任何无线电供应商都可以在他们的解决方案上支持Wi-SUN的实体层（PHY）或者将Wi-SUN的PHY搭载在其无线电上，这有助于促进了互操作性和灵活性。

The second aspect is on the stack side, again since Wi-SUN is an open specification and promotes the PHY as open stack spec, any vendor can provide the stack which interoperate with other licensed certified devices. The third aspect is on the application layer. And again Wi-SUN as astandard does not define an application layer, but this is up to the OEM to define a unifying application layer based on IP, such that all the other sensor nodes or all the other different types of devices can interoperate on the same existing platform.

第二个部分是关于堆栈，因为Wi-SUN是一个开放规范，它促进或定义了开放的实体层堆栈规范，任何供应商都可以提供与你知道的其他许可认证设备互操作的堆栈。第三个方面是在应用层上，同样，作为标准的Wi-SUN并没有定义应用层，但这是由OEM基于IP定义统一的应用层。基于这些特性，所有其他传感器节点或其他不同类型的设备都可以在相同的现有平台上互操作。

So there are multiple aspects to interoperability, but Wi-SUN as a standard wants to address the hardware aspect, as well as the stack aspect of interoperability.

互操作性有多个方面，但作为标准的Wi-SUN希望解决硬件方面的问题，以及互操作性的堆栈方面。

Kyle:

Alright, so I mean it sounds like it's addressing all three components, the bottom and the middle, so the network and the PHY are pretty defined and required, but the application you're just saying there's a really good partnership and understanding that interoperability is important but it's not as specific as the other two interoperability, just it's promoting it… it's encouraging it. Because of the two underlying layers are compatible, it allows them to pull in a sensor from a different vendor but they don't necessarily have to if they don't if they want.

好吧，我的意思是它听起来它在处理所有三个部分，从协议的底层到中间段，所以其无线网络架构被很好地定义和要求。但是你刚才提到在应用层上有很好的合作关系并且了解到互操作性的重要性，但是它不像另外两个互操作性那么具体，只是被提倡和鼓励重视。由于这两个底层是兼容的，这允许他们从不同的供应商获取传感器信息，但如果他们不想这样做就不需要做。

Soumya:

Exactly to your point, I mean customers can either deploy Wi-SUN as a private network, where they don't need to bring in sensors from other vendors, and they can operate it as a completely walled garden or their own network, but the other side of this is they can operate it as an open completely interoperable networkas well, where they can bring in partners sensor node, and other partner electric meter vendors and all of them can talk to each other and operates seamlessly in one large open network. So both types of use cases are definitely possible with Wi-SUN, there is no restriction for one or the other.

你的观点完全正确，我的意思是客户可以部署Wi-SUN作为私人网络，他们不需要引入来自其他供应商的传感器，他们可以把它当作是完全封闭的区域或自有网络来操作，但另一方面他们也可以把它作为开放的互操作网络，从而引入合作的传感器节点和其他电表供应商的设备，并且设备间都能相互交谈以及在一个大型开放网络中无缝运行。因此，这两种类型的用例在Wi-SUN中是绝对可行的，没有限制。

Kyle:

That's great! and to your point earlier, I mean when there were on Proprietary network, so it was no interoperate. There was no ability for a company that focused on one segment to say like… oh it wouldn't be great if we could get sensor input from that streetlight because they didn't manufacturer the streetlight. Well now it's on the same network, so they can say let's just use that standard and be able to pull that into our applications.

好的，就像你说的在专有网络的时候，设备间没有互操作。对专注于单一领域的公司而言，即便他们不制造路灯，但现在也能在同一个网络中从路灯获取传感器输入信息。换句话说，他们可以使用此标准并引入到现有的应用中。

Soumya:

Exactly definitely allows for expansion into newer verticals as well as new use cases which wasn't possible before.

的确，这允许扩展到新的垂直领域以及新的用例，这在以前是不可能的。

Kyle:

This is one of my last questions, but who's going to control this network? Soumya, is this a city only? am I as a city resident going to be able to access this network? Because I get concerned that, am I gonna to pay? Or just you know, is a city just going to charge me to improve their services? but I don't necessarily get access tothis network.

这是我最后的一个问题，谁会来控制这个网络？随著城市的居民能够进入这个网络，使用者会担心是否需要付费，或者城市会向用户收费来改善他们的服务，虽然我不一定可以进入并使用这个网络。

Soumya:

Wi-SUN as a technology operates in the license free ISM bands, the 2.4GHz or Sub-GHz, it's a license free frequency band. On the utility side, the network is typically owned by the utilities. On the Smart City side, the ownership kind of depends on who owns the infrastructure assets. In some cities, the utilities own the street lighting infrastructure too, so they want to have both on the same network. In some other cities, the municipality sort of owns the street lighting asset. But they also work with OEMs to add these other applications of sensor nodes to it. And then in that case, the network can be own either by the city or this third-party OEM partner. The city or the OEM who's managing the network can bring in other sensors and other partners to add leaf node applications to the existing street lighting network.

Wi-SUN是在免费的ISM频段内运行的技术，无论是其可用的2.4GHz或Sub-GHz频段都是不需要经由授权的频段。在公用事业方面，网络通常由公用事业所有；至于智慧城市的应用所有权则取决于谁拥有基础设施资产。在一些城市中，街道照明设施为公用事业所有，所以他们想拥有两种网络。在另一些城市中，市政当局拥有路灯资产，但他们也会和OEM合作以结合传感器节点等其他应用。在这种情况下，网络可以由城市或第三方OEM合作伙伴拥有，管理该网络的城市或OEM可以引入其他传感器和合作伙伴，将叶节点（Leaf Node）应用程序添加到现有的街道照明网络中。

For example, Wi-SUN has deployed as a technology for streetlights in the City of London. The city owns the network, and they see Wi-SUN as a future-proof scalable IP technology that helps them dynamically control streetlights and provide real-time information to the municipality on outages, service orders,etc. They also see it as a technology providing safe lighting to the community and to the residents, and they also see it as a platform where they can add parkingor waste management and other monitoring based applications in the future. So the citizens or the residents of the city will definitely benefit from using Wi-SUN as a technology in their Smart City.

例如，Wi-SUN已经作为一种技术部署在伦敦市的路灯上。市政府拥有这个网络，他们认为Wi-SUN是一种面向未来可扩展的IP技术，可以帮助他们动态控制路灯，并向市政府提供有关停电、服务订单等的实时信息。他们也把Wi-SUN看作是一种实用的技术，可以为社区和居民提供安全的照明，或是作为平台以添加停车或废物管理和其他基于监控的应用，所以市民或居民肯定会从智慧城市使用Wi-SUN而受益。

But from a payment perspective, or to your point, but do we have to pay for thisor not? It all depends on how the city's tax code is setup and how the city's really get money to improve the infrastructure and things of that sort. So it will also depend on who owns some of these assets, because if it's the utility then chances are that they will take or they will be owning the network and the bulk of the infrastructure maintenance will come from them. But if it's the city, yeah then it depends on how the tax codes are set up, how much of tax is the march for the infrastructure improvement, infrastructure development and things of that sort, so it can be a number ofthe different things, I can say.

但从支付的角度来看，或者从你的角度来看，到底我们要不要付费纯粹取决于城市的税法是如何制定的，以及城市如何获得资金来改善基础设施和诸如此类的服务。所以这也取决于谁拥有这些资产，如果是公用事业公司那么他们很可能将拥有网络和大部分基础设施，并且需要负责维护；如果是城市，那就取决于税法是如何制定的，以及有多少费用是为了基础设施的改善和开发之类的事情，所以我认为这会引发很多不同层面的考量。

But the bottom line is citizens and residents will definitely benefit from having lighting on all their streets, environmental or better monitoring sensors to detect weather changes on a daily basis, and also things like manhole detection or waste management tracking and things of that sort, so definitely beneficial to all the residents and the citizens of the city for sure.

但基本上，市民和居民肯定会因为更好的街道照明或环境监测传感器而受益，包括监测每天的天气变化，还有检修井检测和垃圾管理跟踪等类似的事情，这些对所有居民和市民都有好处。

Kyle:

Allright, well I'm looking forward to it. Again, thanks so much for taking the time to share with the listeners what you're seeing in the coming year for Smart Cities and a lot of great information about Wi-SUN.

好的，我很期待智慧城市的发展，也再次感谢你花时间与听众分享未来一年对智慧城市的展望，以及很多关于Wi-SUN的重要信息。

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