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Lora terminal energy-saving method based on binary search time slot randomization communication mechanism

A technology of binary search and communication mechanism, applied in the field of communication, can solve the problem of consuming 124 Pingslot energy, etc., and achieve the effect of shortening communication time, reducing power consumption and saving energy

Active Publication Date: 2018-12-04
FOSHAN SHUNDE SUN YAT SEN UNIV RES INST +2
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Problems solved by technology

If the communication between a node and the gateway only needs 4 (k=2) times, but 128 Ping slots are used, 124 more Ping slots are used, which means that the energy of 124 Pingslots is consumed

Method used

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  • Lora terminal energy-saving method based on binary search time slot randomization communication mechanism
  • Lora terminal energy-saving method based on binary search time slot randomization communication mechanism
  • Lora terminal energy-saving method based on binary search time slot randomization communication mechanism

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Embodiment Construction

[0019] refer to figure 1 , a Lora terminal energy-saving method based on binary search slot randomization communication mechanism, including the algorithm adopted by the Lora terminal, the MCU used by the terminal, and the Lora radio frequency module. The algorithm adopted by the Lora terminal Class B includes the following steps:

[0020] S1: When the node receives the Beacon, use the binary search algorithm to select and set the appropriate PingNb. The search process starts from the middle element of the Beacon array. If the middle element is exactly the element to be searched, the search process ends; if a specific element is greater than or less than the middle element, then search in the half of the array that is greater than or less than the middle element, and start the comparison from the middle element like the beginning;

[0021] S2: Obtain the offset PingOffset of the start time point of the Ping Slot of each node through time slot randomization, and have a random o...

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Abstract

The invention discloses a Lora terminal energy-saving method based on a binary search time slot randomization communication mechanism, which comprises an algorithm adopted by a Lora terminal, an MCU used by a terminal, and a Lora radio frequency module. The algorithm adopted by the Lora terminal Class B includes the following steps: S1: using the binary search algorithm to select and set an appropriate PingNb when a node receives a Beacon; S2: obtaining the offset PingOffset of a start time point of a Ping Slot of each node through time slot randomization; S3: entering the Ping Slot for data reception. The terminal algorithm uses the binary search algorithm to select and set the appropriate PingNb. Each time, the selection range can be reduced by half, and the set PingNb can be quickly andaccurately selected, which greatly shortens the communication time and saves more energy. The time slot randomization is adopted to obtain a cheap amount, it can be ensured that only one node in thePing Slot performs data, and additional energy consumption due to communication system collision or monitoring overload cannot be caused. The Lora terminal energy-saving method can effectively reducepower consumption and achieve energy saving.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a LoRa terminal energy-saving method based on a binary search time slot randomization communication mechanism. Background technique [0002] Lora technology is a kind of LPWAN technology, which has the characteristics of long distance, low power consumption, multi-node and low cost. The entire Lora network protocol layer is as follows. Application is the application layer. The common LoraWAN protocol is the LoraMAC protocol. The terminal types defined by the protocol are ClassA, ClassB, and ClassC. ClassB defines the ping cycle and periodically monitors downlink data. Class B nodes receive the Beacon (beacon) carrying time reference information broadcast by the gateway every 128 seconds to calibrate their own clocks. Between two Beacons, the node will open some receiving windows (ping slots). If it receives the gateway's preamble during the window period, it will receive the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02
CPCH04W52/0209Y02D30/70
Inventor 谭洪舟付豪陈荣军谢舜道邵淼朱雄泳曾衍瀚
Owner FOSHAN SHUNDE SUN YAT SEN UNIV RES INST
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