CN204291405U - A kind of low power consumption device realizing bus or train route communication - Google Patents
A kind of low power consumption device realizing bus or train route communication Download PDFInfo
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- CN204291405U CN204291405U CN201420736668.8U CN201420736668U CN204291405U CN 204291405 U CN204291405 U CN 204291405U CN 201420736668 U CN201420736668 U CN 201420736668U CN 204291405 U CN204291405 U CN 204291405U
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- 238000004891 communication Methods 0.000 title claims abstract description 155
- 230000000284 resting effect Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000003993 interaction Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000007958 sleep Effects 0.000 description 3
- 230000005059 dormancy Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
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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
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The utility model relates to intelligent transportation and wireless communication field, particularly a kind of low power consumption device realizing bus or train route communication.The utility model low-power dissipation system comprises vehicle-mounted node, low frequency wake-up trackside node, communication lines side gusset; Low frequency wake-up trackside node and communication lines side gusset are arranged on two portal frames respectively, and wherein low frequency wake-up trackside node is prepended to communication lines side gusset front; The low frequency wake-up receiver being in super low-power consumption state in vehicle-mounted node receives low frequency wake-up trackside node and launches low-frequency wireless signals, produces wake-up signal, wakes the radio frequency communications unit being in resting state up; The radio frequency communications unit waken up in vehicle-mounted node enters the network's coverage area of communication lines side gusset, and the network of access communications trackside node also completes corresponding exchanges data, and after completing communication, the radio frequency communications unit of vehicle-mounted node enters resting state again.The utility model reduces the power consumption of intelligent transportation radio communication device; May be used in bus or train route communication.
Description
Technical field
The utility model relates to intelligent transportation and wireless communication field, particularly a kind of low power consumption device realizing bus or train route communication.
Background technology
At intelligent transportation field, it is mutual that vehicle-mounted node (OBU) carries out wireless traffic by wireless communication module and trackside node (RSU) usually.And in-vehicle wireless communication device adopts powered battery usually, and the wireless communication module of vehicle-mounted node (OBU) launching, receive and idle time the electricity that expends all many, under being only in resting state, electric quantity consumption is minimum.In order to save the power consumption of battery, extend the operating time of OBU, except adopting the components and parts of low-power consumption when designing OBU, usually the main timing wake-up that relies on is machine-processed, namely when OBU is flat, the most of the time is in sleep state, carries out reception or the transmission of data, be restored to sleep state after exchanges data after being waken up, until OBU is waken up again, reduce power consumption in this way.But the mode of this timing wake-up is faced with the contradiction of real-time and power consumption, be mainly manifested in following three aspects: the length in the time interval, if the time interval that OBU is arranged is long, when having data interaction with trackside node (RSU), OBU may respond in time; If the time interval arranged is too short, although can increase the possibility that RSU and OBU communicates, OBU wakes the reduction being unfavorable for power consumption again to the state-transition frequency of sleeping too soon up from sleep to, thus does not reach the object of reduction power consumption.Timing wake-up needs the clock circuit part of processor to keep operating state, means that MCU can not enter the most thorough resting state.And in the region not having RSU wireless network to cover, OBU also can be timed and wake up.The problems that timing wake-up mechanism exists determine vehicle-mounted OBU node and are not issued in guarantee and RSU proper communication situation the object reducing power consumption and energy effective utilization by this kind of arouse machine processed.
Summary of the invention
The technical problem that the utility model solves is to solve vehicle-mounted OBU power problems in bus or train route communication, and proposes a kind of low power consumption device realizing bus or train route communication, and this device, when ensureing bus or train route proper communication, reduces the electric quantity consumption of OBU work.
The technical scheme that the utility model solves the problems of the technologies described above is:
Comprise: vehicle-mounted node and communication lines side gusset, is characterized in that: also include low frequency wake-up trackside node;
Described vehicle-mounted node includes low frequency wake-up receiver, radio frequency communications unit, and described radio frequency communications unit is connected with low frequency wake-up receiver, receives the wakeup interrupt signal that low frequency wake-up receiver sends; Described low frequency wake-up receiver is in monitoring operating state before the low-frequency wireless signals not receiving the transmission of low frequency wake-up trackside node; Described radio frequency communications unit is in resting state before not receiving the wakeup interrupt signal of low frequency wake-up receiver transmission, be in full speed operation state after receiving the wake-up signal of low frequency wake-up receiver transmission, after completing data interaction with trackside communication node, again carry out resting state;
Described low frequency wake-up trackside node includes low frequency wake-up reflector; Described low frequency wake-up trackside node is in normal operating conditions at full speed always;
Described communication lines side gusset includes communication module, and described communication lines side gusset is in and is in normal operating conditions at full speed always;
Described low frequency wake-up receiver enters the wireless electromagnetic overlay area of low frequency wake-up trackside node, receives low frequency wake-up trackside node and sends the low-frequency wireless signal of telecommunication, and produce wake-up signal to radio frequency communications unit;
Described radio frequency communications unit is by microwave wireless signal access communications trackside node and complete exchanges data; Thus realize bus or train route communication.
Described vehicle-mounted node also includes power supply unit, and described power supply unit provides working power for low frequency wake-up receiver, radio frequency communications unit; Described low frequency wake-up receiver comprises low frequency reception wake up process unit and three-dimensional reception antenna, and low frequency wake-up receiver receives low frequency radio wave by three-dimensional reception antenna.
Low frequency wake-up trackside node also includes processor unit, power supply unit and three dimensional emission antenna; Wherein, power supply unit provides working power for low frequency wake-up reflector, processor unit; Described low frequency wake-up reflector by three dimensional emission antenna transmission low frequency radio wave, and is connected with processor unit; Processor unit adopts chip microcontroller, controls the working method of low frequency wake-up reflector; Thus control communication mechanism, the communication distance of low frequency wake-up trackside node.
The low frequency wake-up receiver of vehicle-mounted node adopts low frequency wake-up receiving chip; The low frequency wake-up reflector of low frequency wake-up trackside node adopts low frequencies chip.
Described low frequency wake-up trackside node and communication lines side gusset are arranged on two portal frames respectively, and wherein low frequency wake-up trackside node is prepended to communication lines side gusset front; Radio frequency communications unit and communication lines side gusset hardware structure can be the SOC of integrated MCU+ radio-frequency (RF) transceiver, or independent MCU+ radio-frequency (RF) transceiver.
Communications band between the radio frequency communications unit of trackside communication node and vehicle-mounted node is 433MHz, 900MHz, 2.4GHz or 5.8GHz.
Beneficial effect:
1, the utility model is the fusion of low frequency and low power consumption technology and microwave-radio technology, both make use of the advantage of the low-power consumption of low frequency chip, can realize again the feature of microwave radio telecommunication;
2, low frequency node is separated with microwave radio node by the utility model, can realize more remote microwave radio communication;
3, the radio frequency communications unit of vehicle-mounted node is under non-wake-up states, be in dormancy low power consumpting state, and low frequency wake-up receiver is in standby listening state always always.
Therefore, low frequency wake-up technology is applied to intelligent transportation field by the utility model, under ensureing the prerequisite of vehicle-mounted OBU and RSU proper communication, reduces OBU electric quantity consumption, saves battery power consumption, extend the normal working hours of OBU.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated:
Fig. 1 is bus or train route described in the utility model communication low power consumption device figure;
Fig. 2 is the theory diagram of vehicle-mounted node 1 described in the utility model;
Fig. 3 is the theory diagram of low frequency wake-up trackside node 2 described in the utility model;
Fig. 4 is the theory diagram of communication lines side gusset 3 described in the utility model;
Fig. 5 is the low frequency wake-up reflector described in the utility model embodiment and low frequency wake-up receiver communication scheme;
The low power consumption device deployment embodiment exemplary plot that Fig. 6 is the bus or train route communication described in the utility model embodiment; The flow chart that the low power consumption device that Fig. 7 is the bus or train route communication described in the utility model embodiment realizes.
Embodiment
The bus or train route communication that the utility model relates to, in the application of actual traffic scene, perhaps the operating time of OBU and RSU communication interaction only had hundreds of millisecond by several seconds, and other times OBU can be in non operating state.So for the operating time as vehicle-mounted OBU node so the short but not radio communication device of longevity of service, the effective ways reducing power consumption are exactly when OBU and RSU does not carry out communication interaction, allow the OBU dormancy being in non operating state, when OBU and RSU carries out communication interaction, the OBU being in resting state is waken up, and just can reach the object of above low-power consumption by low frequency wake-up technology.
Therefore, the utility model utilizes a kind of low power consumption device that can realize bus or train route communication of low frequency wake-up Technology design, and this device can ensure the proper communication between bus or train route, can make OBU minimise power consumption again, thus reach reduction power consumption, extend the object of the operating time of OBU.Below, with concrete implementation the utility model, but and unrestricted protection range of the present utility model.
Concrete enforcement one: as shown in Figure 1, bus or train route communication low power consumption device described in the utility model, comprises and carries node (OBU) 1, low frequency wake-up trackside node (LF-RSU) 2, communication lines side gusset (RF-RSU) 3;
As shown in Figure 2, described vehicle-mounted node (OBU) 1 comprises: low frequency (LF) wakes receiver 1-1, radio frequency communications unit (RF-OBU) 1-2, OBU power supply unit 1-3 up; Wherein OBU power supply unit 1-3 is that low frequency (LF) wakes receiver 1-1, OBU RF communication module 1-2 up and provides working power;
Described low frequency wake-up receiver 1-1 comprises: low frequency reception wake up process unit, three-dimensional reception antenna;
Described low frequency (LF) wakes the low frequency radio wave that receiver 1-1 sends for receiving low frequency wake-up trackside node (LF-RSU) 2 up, and produces wake-up signal to radio frequency communications unit (RF-OBU) 1-2;
Described low frequency wake-up receiver 1-1 is connected by wired mode with radio frequency communications unit (RF-OBU) 1-2;
Described radio frequency communications unit (RF-OBU) 1-2 receives the wakeup interrupt signal that low frequency wake-up receiver 1-1 sends;
Described low frequency wake-up receiver 1-1 is in monitoring operating state before the low-frequency wireless signals not receiving low frequency wake-up trackside node (LF-RSU) 2 transmission;
Described radio frequency communications unit (RF-OBU) 1-2 is in resting state before not receiving the wakeup interrupt signal of low frequency wake-up receiver 1-1 transmission, be in full speed operation state after receiving the wake-up signal of low frequency wake-up receiver 1-1 transmission, after completing data interaction with trackside communication node (RF-RSU) 3, again carry out resting state;
Described radio frequency communications unit 1-2 passes through microwave wireless signal access communications trackside node (RF-RSU) 3 network and completes bus or train route communication.。
As shown in Figure 3, described low frequency wake-up trackside node (LF-RSU) 2 comprises: described LF-RSU comprises low frequency (LF) and wakes reflector 2-1, processor (MCU) unit 2-2, LF-RSU power supply unit 2-3 up; Wherein, LF-RSU power supply unit is that low frequency (LF) wakes reflector 2-1 up, processor (MCU) unit 2-2 provides working power;
Described low frequency wake-up reflector 2-1 is connected by wired with processor (MCU) unit 2-2; Processor (MCU) unit 2-2 controls low frequency wake-up reflector 2-1, and provides input signal;
Described low frequency wake-up reflector 2-1 sends the low-frequency wireless signal of telecommunication by the low frequency wake-up receiver 1-1 of the vehicle-mounted node of three dimensional emission sky alignment (OBU) 1.
Described low frequency wake-up trackside node (LF-RSU) 2 is in normal operating conditions at full speed always;
Described low frequency (LF) wakes the wireless electromagnetic overlay area that receiver 1-1 enters low frequency wake-up trackside node (LF-RSU) 2 up, incoming level wakes the low-frequency wireless signal of telecommunication that trackside node 2 sends up, and produces wake-up signal to radio frequency communications unit (RF-OBU) 1-2;
As shown in Figure 4, described communication lines side gusset (RF-RSU) comprises OBU RF communication module 3-1 and RSU power supply unit 3-2; Wherein RSU power supply unit 3-2 provides working power for RSU RF communication module 3-1;
Described OBU RF communication module 3-1 completes bus or train route communication by radio frequency communications unit (RF-OBU) 1-2 of microwave wireless signal and vehicle-mounted node 1.
Wherein, radio frequency communications unit (RF-OBU) 1-21-2 of vehicle-mounted node 1 and its hardware structure of RSU RF communication module 3-1 of trackside communication node 3 can be the SOC of integrated MCU+ radio-frequency (RF) transceiver, or independent MCU+ radio-frequency (RF) transceiver.
Wherein, processor (MCU) the unit 2-2 of low frequency wake-up trackside node (LF-RSU) 2 adopts chip microcontroller, and it controls the communication mechanism of low frequency wake-up trackside node 2, communication distance etc.
Wherein, the low frequency wake-up receiver 1-1 of vehicle-mounted node (OBU) 1 adopts low frequency wake-up receiving chip; The low frequency wake-up reflector 2-1 of low frequency wake-up trackside node (LF-RSU) 2 adopts low frequencies chip.
As shown in Figure 5, described OBU low frequency (LF) is waken receiver 1-1 up and is received low frequency radio wave by three-dimensional reception antenna; LF-RSU low frequency (LF) wakes reflector up by three dimensional emission antenna transmission low frequency radio wave.
As shown in Figure 6, be installed on by the trackside of low frequency wake-up shown in Fig. 1 node (LF-RSU) 2 is highly H
2portal frame 4 on, this height ensures that low frequency radio wave that low frequency wake-up trackside node (LF-RSU) 2 is launched can be waken up receiver 1-1 by OBU low frequency (LF) and receives and activate the radio frequency communications unit 1-21-2 being in resting state; Be installed on by the side gusset of communication lines shown in Fig. 1 (RF-RSU) 3 is highly H
1portal frame 5 on, this increases and the visible angle of vehicle-mounted node (OBU) 1 antenna highly as far as possible; Portal frame 4 is L with the distance of portal frame 5, and this distance ensures have time enough access trackside communication node 2 network and complete corresponding bus or train route exchanges data after radio frequency communications unit (RF-OBU) 1-2 of vehicle-mounted node 1 is waken up.
Shown in Fig. 7, the method utilizing low power consumption device to realize bus or train route communication described in the utility model comprises the following steps:
S1: low frequency wake-up trackside node (LF-RSU) the 2 transmitting low frequency radio wave being arranged on portal frame 4 encourages the OBU low frequency (LF) being in standby listening state to wake receiver 1-1 up, and OBU low frequency (LF) wakes receiver 1-1 up and produces the radio frequency communications unit that wake-up signal wakes is in resting state; After waking radio frequency communications unit 1-2 up, OBU low frequency (LF) wakes receiver 1-1 up and is again in standby listening state;
The network of the communication lines side gusset (RF-RSU) that S2: after the vehicle-mounted node (OBU) 1 waken up enters the network's coverage area of communication lines side gusset (RF-RSU), radio frequency communications unit (RF-OBU) 1-2 of vehicle-mounted node are arranged on portal frame 5 by microwave wireless signal access is gone forward side by side roadway communication;
S3: radio frequency communications unit 1-2 and the communication lines side gusset (RF-RSU) 2 of vehicle-mounted node (OBU) 1 complete after bus or train route communicates, and the radio frequency communications unit 1-2 of vehicle-mounted node (OBU) 1 enters resting state again.
Embodiment two: present embodiment is described further execution mode one, vehicle-mounted node 1 adopts battery or vehicle-mounted power supply, the direct current that low frequency wake-up trackside node 2 adopts civil power to change, or adopting solar powered, trackside communication node (RF-RSU) 3 adopts the outside mains-supplied of sun fire
Embodiment three: present embodiment is described further execution mode one, the communications band between the radio frequency communications unit (RF-OBU) of trackside communication node (RF-RSU) 2 and vehicle-mounted node (OBU) is 433MHz, 900MHz, 2.4GHz or 5.8GHz.
Embodiment four: present embodiment is described further execution mode one, low frequency wake-up trackside node (LF-RSU) 2 and communication lines side gusset (RF-RSU) 3 are arranged on two portal frames respectively, and wherein low frequency wake-up trackside node (LF-RSU) 2 is prepended to communication lines side gusset (RF-RSU) 3 front.
Just the vehicle-mounted node (OBU) of low-power consumption and the radio communication of communication lines side gusset (RF-RSU) can be realized by the above low power consumption device.
Claims (11)
1. realize a low power consumption device for bus or train route communication, comprising: vehicle-mounted node and communication lines side gusset, is characterized in that: also include low frequency wake-up trackside node;
Described vehicle-mounted node includes low frequency wake-up receiver, radio frequency communications unit, and described radio frequency communications unit is connected with low frequency wake-up receiver, receives the wakeup interrupt signal that low frequency wake-up receiver sends; Described low frequency wake-up receiver is in monitoring operating state before the low-frequency wireless signals not receiving the transmission of low frequency wake-up trackside node; Described radio frequency communications unit is in resting state before not receiving the wakeup interrupt signal of low frequency wake-up receiver transmission, be in full speed operation state after receiving the wake-up signal of low frequency wake-up receiver transmission, after completing data interaction with trackside communication node, again carry out resting state;
Described low frequency wake-up trackside node includes low frequency wake-up reflector; Described low frequency wake-up trackside node is in normal operating conditions at full speed always;
Described communication lines side gusset includes communication module, and described communication lines side gusset is in normal operating conditions at full speed always;
Described low frequency wake-up receiver enters the wireless electromagnetic overlay area of low frequency wake-up trackside node, receives low frequency wake-up trackside node and sends the low-frequency wireless signal of telecommunication, and produce wake-up signal to radio frequency communications unit;
Described radio frequency communications unit is by microwave wireless signal access communications trackside node and complete exchanges data; Thus realize bus or train route communication.
2. the low power consumption device realizing bus or train route communication according to claim 1, is characterized in that: described vehicle-mounted node also includes power supply unit, and described power supply unit provides working power for low frequency wake-up receiver, radio frequency communications unit; Described low frequency wake-up receiver comprises low frequency reception wake up process unit and three-dimensional reception antenna, and low frequency wake-up receiver receives low frequency radio wave by three-dimensional reception antenna.
3. the low power consumption device realizing bus or train route communication according to claim 1, is characterized in that: low frequency wake-up trackside node also includes processor unit, power supply unit and three dimensional emission antenna; Wherein, power supply unit provides working power for low frequency wake-up reflector, processor unit; Described low frequency wake-up reflector by three dimensional emission antenna transmission low frequency radio wave, and is connected with processor unit; Processor unit adopts chip microcontroller, controls the working method of low frequency wake-up reflector; Thus control communication mechanism, the communication distance of low frequency wake-up trackside node.
4. the low power consumption device realizing bus or train route communication according to claim 2, is characterized in that: low frequency wake-up trackside node also includes processor unit, power supply unit and three dimensional emission antenna; Wherein, power supply unit provides working power for low frequency wake-up reflector, processor unit; Described low frequency wake-up reflector by three dimensional emission antenna transmission low frequency radio wave, and is connected with processor unit; Processor unit adopts chip microcontroller, controls the working method of low frequency wake-up reflector; Thus control communication mechanism, the communication distance of low frequency wake-up trackside node.
5. the low power consumption device realizing bus or train route communication according to any one of Claims 1-4, is characterized in that: the low frequency wake-up receiver of vehicle-mounted node adopts low frequency wake-up receiving chip; The low frequency wake-up reflector of low frequency wake-up trackside node adopts low frequencies chip.
6. the low power consumption device realizing bus or train route communication according to any one of Claims 1-4, it is characterized in that: described low frequency wake-up trackside node and communication lines side gusset are arranged on two portal frames respectively, and wherein low frequency wake-up trackside node is prepended to communication lines side gusset front; Radio frequency communications unit and communication lines side gusset hardware structure can be the SOC of integrated MCU+ radio-frequency (RF) transceiver, or independent MCU+ radio-frequency (RF) transceiver.
7. the low power consumption device realizing bus or train route communication according to claim 5, it is characterized in that, described low frequency wake-up trackside node and communication lines side gusset are arranged on two portal frames respectively, and wherein low frequency wake-up trackside node is prepended to communication lines side gusset front; Radio frequency communications unit and communication lines side gusset hardware structure can be the SOC of integrated MCU+ radio-frequency (RF) transceiver, or independent MCU+ radio-frequency (RF) transceiver.
8. the low power consumption device realizing bus or train route communication according to any one of Claims 1-4, is characterized in that: the communications band between the radio frequency communications unit of trackside communication node and vehicle-mounted node is 433MHz, 900MHz, 2.4GHz or 5.8GHz.
9. the low power consumption device realizing bus or train route communication according to claim 5, is characterized in that: the communications band between the radio frequency communications unit of trackside communication node and vehicle-mounted node is 433MHz, 900MHz, 2.4GHz or 5.8GHz.
10. the low power consumption device realizing bus or train route communication according to claim 6, is characterized in that: the communications band between the radio frequency communications unit of trackside communication node and vehicle-mounted node is 433MHz, 900MHz, 2.4GHz or 5.8GHz.
11. low power consumption device realizing bus or train route communication according to claim 7, is characterized in that: the communications band between the radio frequency communications unit of trackside communication node and vehicle-mounted node is 433MHz, 900MHz, 2.4GHz or 5.8GHz.
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| CN201420736668.8U CN204291405U (en) | 2014-11-28 | 2014-11-28 | A kind of low power consumption device realizing bus or train route communication |
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| CN201420736668.8U CN204291405U (en) | 2014-11-28 | 2014-11-28 | A kind of low power consumption device realizing bus or train route communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507146A (en) * | 2014-11-28 | 2015-04-08 | 东莞中国科学院云计算产业技术创新与育成中心 | Low-power-consumption system and method for realizing vehicle-road communication |
| CN107070508A (en) * | 2017-03-02 | 2017-08-18 | 中国科学院自动化研究所 | The adaptive retransmission method of signal to noise ratio in cooperative communication network system |
-
2014
- 2014-11-28 CN CN201420736668.8U patent/CN204291405U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507146A (en) * | 2014-11-28 | 2015-04-08 | 东莞中国科学院云计算产业技术创新与育成中心 | Low-power-consumption system and method for realizing vehicle-road communication |
| CN107070508A (en) * | 2017-03-02 | 2017-08-18 | 中国科学院自动化研究所 | The adaptive retransmission method of signal to noise ratio in cooperative communication network system |
| CN107070508B (en) * | 2017-03-02 | 2020-03-13 | 中国科学院自动化研究所 | Signal-to-noise ratio self-adaptive forwarding method in cooperative communication network system |
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