Zigbee 3.0 incorporates many years of experience from over 400 member companies and it is an exciting step toward streamlining IoT standards! MMB has been actively involved in the development of the zigbee Zigbee 3.0 specification and we created this page to share some helpful information with our partners and customers.
If you would like to gain access to the zigbee Zigbee specifications, you can download them by registering at this link: http://www.zigbee.org/zigbee-for-developers/zigbee/
You can also join the zigbee alliance Zigbee Alliance via this link: http://www.zigbee.org/zigbeealliance/join/
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Key Terms
Node vs Device
"A node defines a single instance of the zigbee PRO stack with a single IEEE address on a single network."
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Defined by EZ-Mode:
"For a node that is not already joined to a network, EZ-Mode network steering is the action of searching for and joining an open network. For a node that has joined a network, EZ-Mode network steering is the action of opening the network to allow new nodes to join."
Commissioning
All nodes shall support network steering (EZ-Mode).
Commissioning Director: a node in a network that is able to directly edit bindings and reporting configurations on any node in the network.
Security
Centralized vs Distributed Security
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A joining node can determine whether it just joined a centralized or distributed security network by examining which link key is used to encrypt the Transport Key message.
Joining a Distributed Security Network
All nodes that want join to a network where distributed trust center mode is in use will have to have support for that mode.
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- Default global TC link key (widely known by zigbee alliance members)
- Distributed security global link key
- Test value (0xd0, 0xd1, 0xd2, ...., 0xdf)
- Production value is given after a company certifies successfully
- Install code derived preconfigured link key
- All nodes in ZB3 shall support install code
- After joining, must exchange the preconfigured link key with an updated TC link key
- If SE security, use CBKE
- If not, use APS Request Key to request a new key from TC
- If the node supports touchlink commissioning then it will also contain the touchlink preconfigured link key
Binding, Reporting, Groups
"A node shall implement a binding table whose number of available entries is greater than or equal to the sum of the cluster instances, ,supported on each device of the node, that are initiators of application transactions."
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"A node that can be a target of an application transaction shall support group addressing and at least 8 memberships in the group table."
Sleepy Poll Recommendation
There are two polling rates: fast rate and slow rate
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During commissioning, devices should poll at fast rate
Trust Center Policies
A set of policies that a Trust Center can configure for the network
- Whether to Use Install Code. All non-coordinator nodes in zigbee 3.0 have install codes. In a centralized security network, it's up to the Trust Center to decide whether to use the install code.
- Whether to Require Key Exchange. If required, a joining node must exchange its link key after joining, otherwise, coordinator will remove the joining node from the network. All zigbee 3.0 joining nodes are required to go through the link key exchange procedure. So it seems like the purpose of this policy is to allow a Trust Center to support legacy nodes that don't support key exchange.
FAQ
What are the key features being added in zigbee 3.0?
- Unified all Application Profiles into one standard
- Improved security
When can device vendors start certifying zigbee 3.0 products?
The certification process opened on May 15, 2016. However, most silicon vendors are still finalizing their support of the Green Power features, so very few devices have been certified to date.
When will MMB release RapidConnect firmware that will be compliant with zigbee 3.0?
MMB's first public release of zigbee 3.0 compliant RapidConnect firmware will likely be in June, 2017. If you are interested in testing an alpha or beta release, please contact your Account Manager for more information.
What are Devices and Clusters available for certification today?
As of March 20, 2017, the following devices can be certified:
- On/Off Switch
- On/Off Light Switch
- Level Control Switch
- Dimmable Plug-in Unit
- On/Off Output
- Color Temperature Light
- Extended Color Light
- Level Control Output
- Scene Selector
- Shade Controller
- Configuration Tool
- Window Covering Device
- Window Covering Controller
- Remote Control
- Combined Interface
- Temperature Sensor
- Range Extender
- Color Controller
- Color Scene Controller
- Mains Power Outlet
- On/Off Light
- Non-Color Controller
- Non-Color Scene Controller
- Dimmable Light
- Color Dimmable Light
- On/Off Light Switch
- Dimmer Switch
- Color Dimmer Switch
- Light Sensor
- Occupancy Sensor
- Control Bridge
- On/Off Sensor
- Green Power Proxy Basic
- Green Power Combo Basic
- Green Power Device
What will happen to the existing application profiles like Home Automation and zigbee Light Link?
The previous Application Profiles will have a sunset period, after which they will no longer be available for certification.
For the Home Automation, Lighting, Retail, and Building profiles, new products can be certified until May 15, 2017. Re-certification of existing products will no longer be available after November 15, 2017.
For Telecom and Healthcare, certification stopped on November 15, 2016.
What will happen to zigbee Smart Energy?
This is still being discussed by the members of the zigbee alliance. At present, there are no firm plans to merge the zigbee Smart Energy Application Profile into zigbee 3.0.
How will zigbee GreenPower work with zigbee 3.0?
All ZigBee 3.0 routers must be able to act as a proxy for Green Power (the zigbee networking and application-level specification for energy-harvesting end devices).
Will zigbee 3.0 devices be backward compatible with older devices?
Yes, in some scenarios.
A zigbee Home Automation device can join a zigbee 3.0 Centralized Network that does not require a key exchange.
A zigbee Home Automation device can NOT join a zigbee 3.0 distributed network.
A zigbee 3.0 device can join either a zigbee Light Link or a zigbee Home Automation network using classical commissioning
How can device vendors test their device for zigbee 3.0 compliance?
The zigbee alliance will be providing a ZigBee 3.0 Test Tool and a Green Power Test Harness. Each company will receive a complimentary license for the zigbee 3.0 Test Tool. Additional licenses are 1000 USD per year. Green Power Test Harness licenses are 1000 USD per year.
zigbee 3.0 Test Tool (ZTT) licenses can be purchased from https://www.regonline.com/ZigBee3testtool
Will Unsecured Rejoin (TC Rejoin) still be allowed in zigbee 3.0?
No. In zigbee PRO stack r21 and zigbee 3.0, TC Rejoin (or Unsecured Rejoin) using the default or well-known link key will no longer be allowed. It will only be allowed for devices that have completed successful link key exchange, where they receive unique link keys.
See zigbee PRO Stack r21 specification (05-3474-21), Table 4.33 Trust Center Policy Values, attribute allowRejoins.
What might block you from certifying a zigbee 3.0 product right now?
While zigbee 3.0 is gathering momentum, only a couple of vendors have certified their product so far.
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If you are planning a new zigbee product, please check with us on whether your product would be gated by any of these factors, and what we can do to accelerate your path to certification.
What is the upgrade path from legacy HA devices to zigbee 3.0 for MMB customers?
MMB customers will be able to upgrade their existing zigbee HA devices to zigbee 3.0 through the built-in Serial Upgrade or OTA (over-the-air) Upgrade features. MMB's new zigbee 3.0 compliant firmware will include all of the serial commands from our existing RapidHA Serial Protocol (i.e. it will still be compatible with your existing Host application), but it will also include some new frames for Network Commissioning. Contact MMB's Support team if you have questions about how to transition to these new frames.
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