Channel access method, system and packet transceiver for use in industrial wireless networks
An industrial wireless network and transceiver technology, applied in wireless communication, electrical components, etc., can solve the problems of lack of flexibility, TSN cannot be directly applied to wireless network, etc.
Active Publication Date: 2021-12-03
HITACHI ENERGY SWITZERLAND AG
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- Application Information
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Problems solved by technology
As disclosed above, although IEEE TSN can be used in Ethernet to schedule traffic with different priorities, however, TSN cannot be directly applied in wireless networks
Slotted protocols such as those proposed in IEEE802.15.4e are commonly used to regulate channel access and avoid collisions, but they lack flexibility in handling the different traffic priorities offered by TSN
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[0032] The inventive concepts will now be described more fully hereinafter with reference to the accompanying drawings, in which some embodiments of the inventive concepts are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, And will fully convey the scope of the inventive concept to those skilled in the art. Throughout the specification, like numerals refer to like elements. Any steps or features shown by dashed lines should be considered optional.
[0033] figure 1A wireless communication network 100 is schematically shown, in which the embodiments disclosed herein are applicable. The network entities, denoted as nodes 200a, 200b, . Each node may represent a component of a substation automation system (such as a gateway, circuit breaker, circuit protector, tran...
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A mechanism for channel access in industrial wireless networks is provided. A method includes allocating, by a network controller, time / frequency resource units in a set of guaranteed time slots to packet transceivers in an industrial wireless network. Guaranteed slots are divided in time into slots and in frequency into channels, where a slot-channel pair defines a time / frequency resource unit. The method includes providing, by the network controller, information about time / frequency resource units allocated to the packet transceivers to the packet transceivers. The method includes mapping, by the packet transceivers, packets of their own traffic flows to time / frequency resource units allocated to them in each set of guaranteed time slots. Each packet transceiver's packets are mapped according to its own traffic flow priority-based scheduling and independently of any mapping of packets of other packet transceivers in the industrial wireless network.
Description
technical field [0001] Embodiments presented herein relate to methods, network controllers, packet transceivers, computer readable storage media for channel access in industrial wireless networks. Background technique [0002] Industrial communication systems are commonly used in grid control applications (for example, for substation automation) for device control and monitoring. Therefore, these communication systems must accommodate different types of traffic from information technology (IT) infrastructure (eg, remote monitoring equipment, metering equipment, etc.) as well as from operational technology (OT) infrastructure (eg, control systems). Different business flows have different specific requirements in terms of determinism, delay and reliability, which should be considered when designing the protocol stack, especially the Media Access Control (MAC) layer in the protocol stack. [0003] In this regard, the IEEE Time Sensitive Networking (TSN) Working Group is develo...
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IPC IPC(8): H04W74/04H04W72/02
CPCH04W72/02H04W74/04H04W72/044H04W72/1268H04W74/02H04W72/566
Inventor 庞智博M·卢维索托
Owner HITACHI ENERGY SWITZERLAND AG