CN107155209B - Asymmetric LoRa communication system and its control method - Google Patents
Asymmetric LoRa communication system and its control method Download PDFInfo
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- CN107155209B CN107155209B CN201710603971.9A CN201710603971A CN107155209B CN 107155209 B CN107155209 B CN 107155209B CN 201710603971 A CN201710603971 A CN 201710603971A CN 107155209 B CN107155209 B CN 107155209B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/143—Downlink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
A kind of asymmetric LoRa communication system and its control method provided in an embodiment of the present invention, are related to field of wireless transmission, which includes host node and from node.The host node includes source crystal oscillator and power amplifier.Described to have source crystal oscillator and the power amplifier to couple respectively with the host node, the host node and described establish from node wirelessly communicate connection；The power amplifier, for improving the transmission power of the host node；It is described to have source crystal oscillator, for increasing the clock stability of the host node, improve the receiving sensitivity of the host node.For traditional LoRa communication system, which can be improved communication distance.
Description
Technical field
The present invention relates to field of wireless transmission, in particular to a kind of asymmetric LoRa communication system and its controlling party
Method.
Background technique
LoRa is a kind of overlength distance wireless transmission scheme based on spread spectrum proposed by Semtech company, the U.S.,
Compared with other wireless communication techniques, network efficiency can be significantly improved, eliminate interference, copied in four table collection of water power hot air heating, intelligence
Low-power consumption, the telecommunication fields such as energy managing system of car parking, industrial remote data acquisition are widely used.
With the development of science and technology, the wireless communication distance of traditional LoRa communication system starts bottleneck occur, it is not able to satisfy
In practical application.Therefore, the communication distance for improving LoRa communication system is of great significance for LoRa communication system.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of asymmetric LoRa communication system and its controlling party
For method, with traditional LoRa communication system, communication distance is improved.
In a first aspect, the embodiment of the invention provides a kind of asymmetric LoRa communication system, including host node and from section
Point, the host node include source crystal oscillator and power amplifier.It is described have source crystal oscillator and the power amplifier respectively with
The host node coupling, the host node and described establish from node wirelessly communicate connection；The power amplifier, for improving
The transmission power of the host node；It is described to have source crystal oscillator, for increasing the clock stability of the host node, improve the main section
The receiving sensitivity of point.
In preferred embodiments of the present invention, the host node and/or described uplink communication mould is pre-saved out of node
Formula and DOWN communication mode, every kind of communication pattern respectively correspond different spreading factor and bandwidth, the host node
And/or it is described from node when detecting that the system is in different communication patterns, based on corresponding with the communication pattern
Spreading factor, bandwidth and transmission power work.
In preferred embodiments of the present invention, the spreading factor corresponding to the uplink communication mode be greater than it is described under
Spreading factor corresponding to row communication pattern, bandwidth corresponding to the uplink communication mode are less than the DOWN communication mode institute
Corresponding bandwidth, transmission power corresponding to the uplink communication mode are less than transmitting function corresponding to the DOWN communication mode
Rate.
It is described to have source crystal oscillator for TCXO temperature-compensating crystal oscillator in preferred embodiments of the present invention.
In preferred embodiments of the present invention, it is described from the quantity of node be it is multiple, it is each described from node respectively with institute
It states host node and establishes wireless communication connection.
Second aspect, the embodiment of the present invention provide a kind of communication means of asymmetric LoRa communication system, and the method is answered
With asymmetric LoRa communication system communication, the system comprises host node and from node, the host node includes source crystal oscillator
And power amplifier；It is described to there is source crystal oscillator and the power amplifier to couple respectively with the host node, the host node
Wireless communication connection is established from node with described, the host node and/or described uplink communication mode is pre-saved out of node
And DOWN communication mode, every kind of communication pattern respectively correspond different spreading factors, bandwidth and transmission power；It is described
Method includes: when the host node and described establish from node communicate to connect；If being in DOWN communication mode, the power amplification
Device improves the transmission power of the host node, the asymmetric LoRa communication system work in low spreading factors, big bandwidth and
High transmitting power；If being in uplink communication mode, the clock stability for having source crystal oscillator to increase the host node is described non-right
LoRa communication system is claimed to work in high spreading factor, small bandwidth and low transmitting power.
The beneficial effect of the embodiment of the present invention is: the embodiment of the invention provides a kind of asymmetric LoRa communication system and its
Control method, the system include host node and from node, and the host node includes source crystal oscillator and power amplifier.This is
System improves the transmission power of the host node by the power amplifier, has source crystal oscillator by described, increases the master
The clock stability of node improves the receiving sensitivity of the host node.Since host node generally uses mains-supplied, to power consumption
It is insensitive, therefore, the transmission power of host node can be improved by power amplifier, allows and connects more at a distance from node
The radiofrequency signal of host node transmitting is received, to increase link budget, meanwhile, host node can be obtained higher using there is source crystal oscillator
Receiving sensitivity so that host node can receive more at a distance from node emit weak radio-frequency signal, improve communication
Distance.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that being understood by implementing the embodiment of the present invention.The objectives and other advantages of the invention can be by written
Specifically noted structure is achieved and obtained in specification, claims and attached drawing.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural block diagram for asymmetric LoRa communication system that first embodiment of the invention provides.
Fig. 2 is the operation schematic diagram for the asymmetric LoRa communication system of another kind that first embodiment of the invention provides；
Fig. 3 is a kind of structural block diagram for asymmetric LoRa communication system that second embodiment of the invention provides；
Fig. 4 is a kind of flow chart of the control method for asymmetric LoRa communication system that third embodiment of the invention provides.
Icon: the asymmetric LoRa communication system of 100-；110- host node；120- is from node；130- has source crystal oscillator；
140- power amplifier.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second " etc. are only used for distinguishing description, and should not be understood as referring to
Show or imply relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
First embodiment
Fig. 1 is please referred to, the present embodiment provides a kind of asymmetric LoRa communication system 100, the asymmetric LoRa communication system
For system 100 including host node 110 and from node 120, the host node 110 includes source crystal oscillator 130 and power amplifier
140。
It is described to there is source crystal oscillator 130 and the power amplifier 140 to couple respectively with the host node 110.The main section
Point 110 can be with described from foundation wireless communication connection between node 120.
Wherein, the host node 110 and it is described between node 120 can based on linear frequency modulation spread spectrum modulation technique establish
Communication connection so that host node 110 and from the communication between node 120 both maintained FSK (frequency shift keying) modulation it is identical low
Power consumption characteristics, and significantly increase communication distance, while improving network efficiency and eliminating interference, i.e., different frequency expansion sequences
Terminal even if using identical frequency simultaneously send will not interfere with each other.
The host node 110 and the communication between node 120 are mainly (i.e. non-to award in global free frequency range operation
Weigh frequency range), including 433,868,915MHz etc..
In general, host node 110 can use mains-supplied, it is powered from node 120 using battery.
It is described to there is source crystal oscillator 130 to couple with the host node 110.There are source crystal oscillator 130 and 110 coupling of host node when described
After conjunction, the clock stability of the host node 110 can be improved.Since the clock stability of host node is higher, signal bandwidth is got over
Small, so that receiving sensitivity is higher, therefore, when the coupling active crystal oscillator 130 on the host node 110, and the host node is made
When receiving for data receiver from the data that node is sent, the receiving sensitivity of the host node 110 can be improved, to improve
The host node 110 and the communication distance between node 120.
Further, described to there is source crystal oscillator 130 to can be TCXO temperature-compensating crystal oscillator.In this present embodiment, described active
Crystal oscillator 130 can select the high-precision 32MHZ temperature-compensating crystal oscillator of 0.05ppm.
Certainly, ordinary passive crystal oscillator can also be coupled from node 120, the common crystals for being 10ppm for example, by using precision.
The power amplifier 140, can be improved the transmission power of host node 110, so that the emission maximum of host node 110
Power can achieve 30dBm.Wherein, the model of the power amplifier 140 can be BLT53A etc..
When the host node 110 with described from when being communicated between node 120, the LoRa communication system 100 can be with
Including uplink communication mode and DOWN communication mode.When LoRa communication system 100 is in DOWN communication mode, the main section
Point 110 is in emission state, described to be in reception state from node 120；When LoRa communication system 100 is in uplink communication mode
When, the host node 110 is in reception state, described to be in emission state from node 120.
When the asymmetric LoRa communication system 100 is in DOWN communication mode, since host node 110 generally uses city
Electricity power supply, it is insensitive to power consumption, therefore, the transmission power of host node 110 can be improved by power amplifier 140, so that more
It can receive the radiofrequency signal emitted to host node 110, from node 120 at a distance to increase link budget.Although from node
120 using common crystals, sacrifice receiving sensitivity, but the receiving sensitivity sacrificed can by host node 110 compared with
Highland transmission power compensates, and then extends host node 110 and from the communication distance between node 120.
When the asymmetric LoRa communication system 100 is in uplink communication mode, host node 110, which uses, source crystal oscillator
130, host node 110 obtains higher receiving sensitivity, so that host node 110 can receive more at a distance from node 120
The weak radio-frequency signal of transmitting, although the power consumption of temperature-compensating crystal oscillator is much larger compared with no source crystal oscillator, host node 110 is usually adopted
It is insensitive to power consumption with mains-supplied, extend host node 110 and from the communication distance between node 120.
When being communicated, uplink communication pattern and DOWN communication mode are all based on identical traditional LoRa system
Spreading factor, bandwidth and transmission power are communicated.However in practical situations, LoRa system is being in different communication patterns
When, host node 110 and the requirement from node 120 to power consumption are also different, and spreading factor, bandwidth and transmission power three are controllable
Parameter be adjusted to increase system transmission range, reduce system power dissipation provide possibility.
As an implementation, uplink communication mode and downlink communication can be pre-saved in the host node 110
Mode, every kind of communication pattern respectively correspond different spreading factor and signal bandwidth, such as uplink communication mode corresponds to
Uplink spreading factor, uplink signal bandwidth and uplink signal transmission power, DOWN communication mode correspond to downlink spreading factor, downlink
Signal bandwidth and downlink signal transmission power.When the asymmetric LoRa communication system 100 is in uplink communication mode, principal and subordinate
It is communicated between node using uplink spreading factor, uplink signal bandwidth and uplink transmission power, as the asymmetric LoRa
When communication system 100 is in DOWN communication mode, downlink spreading factor, downlink signal bandwidth and downlink are used between main and subordinate node
Transmission power is communicated.
It is of course also possible to pre-save uplink communication mode and DOWN communication mode out of node 120 described；May be used also
With the host node 110 with uplink communication mode and DOWN communication mode are saved out of node 120.
It is possible to further set the spreading factor corresponding to uplink communication mode greater than the DOWN communication mode
Corresponding spreading factor, such as uplink spreading factor SF is set as 12, downlink spreading factor is set as 9.Wherein, it spreads
The factor is bigger, and the anti-multipath jamming performance of signal is better, and the receiving sensitivity of recipient is also higher, and transmission range is remoter；Also
Uplink signal bandwidth can be set less than downlink signal bandwidth, such as uplink signal bandwidth BW is set as 62.5KHz, by downlink
Signal bandwidth BW is set as 500KHz；Uplink signal transmission power is less than the transmission power of downlink signal, such as by uplink signal
Transmission power be set as 20dBm, the transmission power of downlink signal is set as 30dBm.
Please refer to Fig. 2, the host node 110 and/or it is described pre-saved out of node 120 uplink communication mode and
After DOWN communication mode, when the asymmetric LoRa communication system 100 is communicated, if being in DOWN communication mode, main section
Point 110 and from node 120 work in lower spreading factor (such as 9), biggish signal bandwidth (such as 500KHz) and
Biggish transmission power (such as 30dBm).According to CAD monitoring time formula (2SF+32)/BW it is found that at this time from node 120
It is shorter that CAD monitors duration.For the CAD periodically executed, shorter CAD monitoring time is greatly reduced from node
120 power consumption is extended from 120 battery of node.It is unwise to power consumption again since host node 110 uses mains-supplied
Sense improves its transmission power to increase link budget, and then extends communication distance.
If being in uplink communication mode, receiving-transmitting sides work in higher spreading factor (such as 12), lesser signal
Bandwidth (such as 62.5KHz) and lesser transmission power (such as 20dBm).For asymmetric LoRa communication system 100, compared with
High spreading factor and lesser signal bandwidth can obtain higher receiving sensitivity, lesser transmission power can reduce it
Emit power consumption, along with host node 110 is using TCXO temperature-compensating crystal oscillator, improves its receiving sensitivity, effectively increase
Link budget is added, the communication distance between main and subordinate node is extended under the premise of not increasing from 120 power consumption of node.
When main and subordinate node is without communication, host node 110 can be constantly in reception state, although power consumption is larger,
It is host node 110 by mains-supplied, it is insensitive to power consumption；It is in from node 120 and listens to state, i.e., periodically check host node
Whether 110 sending signal, such as every 4 seconds inspection 1ms (the 1ms time is determined by the spreading factor SF and bandwidth BW of host node).
Although the bigger BW of SF is smaller can transmit it is farther, it is longer from detection time needed for node 120, it is meant that from node
120 power consumptions are larger, the lesser SF of biggish BW used when so host node 110 being sent here, in this way from when the detection of node 120
Between can be shorter, more power saving, thus bring range loss is compensated by the big transmission power of host node 110.
A kind of working principle of asymmetric LoRa communication system 100 provided in an embodiment of the present invention is: the system includes master
Node 110, from node 120, have source crystal oscillator 130 and power amplifier 140.The system is mentioned by the power amplifier 140
The high transmission power of the host node 110, has source crystal oscillator 130 by described, increases the clock stable of the host node 110
Property, improve the receiving sensitivity of the host node 110.It is insensitive to power consumption since host node 110 generally uses mains-supplied,
Therefore, the transmission power of host node 110 can be improved by power amplifier 140, so that more at a distance can be with from node 120
The radiofrequency signal of the transmitting of host node 110 is received, to increase link budget, meanwhile, host node 110, can using there is source crystal oscillator 130
To obtain higher receiving sensitivity, so that host node 110 can receive the radio frequency letter emitted more at a distance from node 120
Number, improve communication distance.
Second embodiment
Fig. 3 is please referred to, the present embodiment provides a kind of asymmetric LoRa communication system 100, the asymmetric LoRa communication system
For system 100 including host node 110 and from node 120, the host node 110 includes source crystal oscillator 130 and power amplifier
140。
Wherein, the present embodiment is with the most important distinguishing feature of first embodiment, the quantity from node 120
It can be multiple, each described to be connected respectively with the host node 110 foundation wireless communication from node 120, composition Star Network.
3rd embodiment
Referring to figure 4., the present embodiment provides a kind of communication means of asymmetric LoRa communication system, the method is applied to
Asymmetric LoRa communication system communication, the system comprises host node and from node, the host node include source crystal oscillator with
And power amplifier；It is described to there is source crystal oscillator and the power amplifier to couple respectively with the host node, the host node with
It is described from node establish wireless communication connection, the host node and/or it is described pre-saved out of node uplink communication mode with
And DOWN communication mode, every kind of communication pattern respectively correspond different spreading factors, bandwidth and transmission power；The side
Method includes:
Step S110: the host node and described establish from node communicate to connect；
Step S120: if being in DOWN communication mode, the power amplifier improves the transmission power of the host node, institute
It states asymmetric LoRa communication system and works in low spreading factors, big bandwidth and high transmitting power；
Step S130: if being in uplink communication mode, the clock stability for thering is source crystal oscillator to increase the host node, institute
It states asymmetric LoRa communication system and works in high spreading factor, small bandwidth and low transmitting power.
In addition, it is described from the quantity of node be it is multiple, it is each described to establish channel radio with the host node respectively from node
Letter connection, constitutes Star Network.
In conclusion a kind of asymmetric LoRa communication system provided in an embodiment of the present invention and its control method, the system
Including host node and from node, the host node includes source crystal oscillator and power amplifier.The system passes through the power
Amplifier improves the transmission power of the host node, has source crystal oscillator by described, increases the clock stable of the host node
Property, improve the receiving sensitivity of the host node.It is insensitive to power consumption since host node generally uses mains-supplied, it therefore, can
To improve the transmission power of host node by power amplifier, emit so that can receive more at a distance from node to host node
Radiofrequency signal, to increase link budget, meanwhile, host node can obtain higher receiving sensitivity, make using there is source crystal oscillator
Obtaining host node can receive the weak radio-frequency signal emitted more at a distance from node, improve communication distance.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of asymmetric LoRa communication system, which is characterized in that including host node and from node, the host node includes
Source crystal oscillator and power amplifier, the host node and/or described pre-save uplink communication mode and downlink out of node
Communication pattern, every kind of communication pattern respectively correspond different spreading factors, bandwidth and transmission power, the host node and/
Or it is described from node when detecting that the system is in different communication patterns, be based on expansion corresponding with the communication pattern
The frequency factor, bandwidth of operation and transmission power；It is described to there is source crystal oscillator and the power amplifier to couple respectively with the host node,
The host node and described establish from node wirelessly communicate connection；
The power amplifier, for improving the transmission power of the host node；
It is described to have source crystal oscillator, for increasing the clock stability of the host node, improve the receiving sensitivity of the host node.
2. system according to claim 1, which is characterized in that the spreading factor corresponding to the uplink communication mode
Greater than spreading factor corresponding to the DOWN communication mode, bandwidth corresponding to the uplink communication mode is less than the downlink
Bandwidth corresponding to communication pattern, it is right that transmission power corresponding to the uplink communication mode is less than the DOWN communication mode institute
The transmission power answered.
3. system according to claim 1, which is characterized in that it is described from the quantity of node be it is multiple, it is each described from section
Point establishes wireless communication connection with the host node respectively, constitutes Star Network.
4. system according to claim 1, which is characterized in that described to have source crystal oscillator for TCXO temperature-compensating crystal oscillator.
5. system according to claim 4, which is characterized in that the TCXO temperature-compensating crystal oscillator is that precision is 0.05ppm
32MHz temperature-compensating crystal oscillator.
6. system according to claim 1, which is characterized in that the host node and the communications band between node
For unauthorized frequency range.
7. system according to claim 6, which is characterized in that the operation frequency range of the unauthorized frequency range be 433MHz or
868MHz or 915MHz.
8. system according to claim 1, which is characterized in that the model BLT53A of the power amplifier.
9. a kind of control method of asymmetric LoRa communication system, which is characterized in that the method is logical applied to asymmetric LoRa
Believe system communication, the system comprises host node and from node, the host node includes source crystal oscillator and power amplifier；
Described to have source crystal oscillator and the power amplifier to couple respectively with the host node, the host node is established with described from node
Wireless communication connection, the host node and/or it is described uplink communication mode and DOWN communication mode are pre-saved out of node,
Every kind of communication pattern respectively corresponds different spreading factors, bandwidth and transmission power；The described method includes:
The host node and described establish from node communicate to connect；
If being in DOWN communication mode, the power amplifier improves the transmission power of the host node, the asymmetric LoRa
Communication system works in low spreading factors, big bandwidth and high transmitting power；
If being in uplink communication mode, the clock stability for thering is source crystal oscillator to increase the host node, the asymmetric LoRa
Communication system works in high spreading factor, small bandwidth and low transmitting power.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11844001B2 (en) | 2020-08-20 | 2023-12-12 | Ip Co., Llc | Asset tracking systems and methods |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109547348B (en) * | 2017-09-21 | 2022-04-05 | 阿里巴巴集团控股有限公司 | Communication and route establishing method and device |
| CN111294911B (en) * | 2019-04-22 | 2022-09-30 | 紫光展讯通信(惠州)有限公司 | Method and device for determining transmitting power of multi-node repeater, storage medium and terminal |
| CN110995512B (en) * | 2019-12-27 | 2023-04-28 | 上海后米物联网技术有限公司 | Industrial Internet lora communication and control method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374965A (en) * | 2016-10-18 | 2017-02-01 | 杭州隽德科技有限公司 | Lora-modulation-mode-based SPI interface internet-of-things wireless transceiver |
| CN106374967A (en) * | 2016-10-26 | 2017-02-01 | 杭州隽德科技有限公司 | SPI interface Internet of things wireless transceiver based on SX127X chip |
| CN106385705A (en) * | 2016-08-30 | 2017-02-08 | 中兴长天信息技术（南昌）有限公司 | Power control method of LORA wireless communication system for Internet of Things (IoT) |
| CN106455105A (en) * | 2016-08-30 | 2017-02-22 | 中兴长天信息技术（南昌）有限公司 | Low-power LORA wireless communication network channel access control method |
| CN206149517U (en) * | 2016-11-15 | 2017-05-03 | 国动物联网技术（上海）有限公司 | Multimode terminal of compatible loRaWAN class A, Class B and write by hand mode |
| CN106788560A (en) * | 2016-11-28 | 2017-05-31 | 武汉大学 | A kind of data radio station based on SX1278 |
| CN106790586A (en) * | 2016-12-28 | 2017-05-31 | 国电南瑞科技股份有限公司 | A kind of city multiple-energy-source Collect jointly method |
| WO2017089177A1 (en) * | 2015-11-25 | 2017-06-01 | Sagemcom Energy & Telecom Sas | Gateway configuration method |
| CN106817148A (en) * | 2016-12-19 | 2017-06-09 | 武汉慧联无限科技有限公司 | The method that single receiver receives different spreading factor sequences under low communication frequency |
| CN106920313A (en) * | 2017-04-28 | 2017-07-04 | 北京展扬金卡科技有限公司 | Novel radio gate control system based on spread spectrum |
-
2017
- 2017-07-21 CN CN201710603971.9A patent/CN107155209B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017089177A1 (en) * | 2015-11-25 | 2017-06-01 | Sagemcom Energy & Telecom Sas | Gateway configuration method |
| CN106385705A (en) * | 2016-08-30 | 2017-02-08 | 中兴长天信息技术（南昌）有限公司 | Power control method of LORA wireless communication system for Internet of Things (IoT) |
| CN106455105A (en) * | 2016-08-30 | 2017-02-22 | 中兴长天信息技术（南昌）有限公司 | Low-power LORA wireless communication network channel access control method |
| CN106374965A (en) * | 2016-10-18 | 2017-02-01 | 杭州隽德科技有限公司 | Lora-modulation-mode-based SPI interface internet-of-things wireless transceiver |
| CN106374967A (en) * | 2016-10-26 | 2017-02-01 | 杭州隽德科技有限公司 | SPI interface Internet of things wireless transceiver based on SX127X chip |
| CN206149517U (en) * | 2016-11-15 | 2017-05-03 | 国动物联网技术（上海）有限公司 | Multimode terminal of compatible loRaWAN class A, Class B and write by hand mode |
| CN106788560A (en) * | 2016-11-28 | 2017-05-31 | 武汉大学 | A kind of data radio station based on SX1278 |
| CN106817148A (en) * | 2016-12-19 | 2017-06-09 | 武汉慧联无限科技有限公司 | The method that single receiver receives different spreading factor sequences under low communication frequency |
| CN106790586A (en) * | 2016-12-28 | 2017-05-31 | 国电南瑞科技股份有限公司 | A kind of city multiple-energy-source Collect jointly method |
| CN106920313A (en) * | 2017-04-28 | 2017-07-04 | 北京展扬金卡科技有限公司 | Novel radio gate control system based on spread spectrum |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11844001B2 (en) | 2020-08-20 | 2023-12-12 | Ip Co., Llc | Asset tracking systems and methods |
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