CN106028352B - A kind of region danger early warning System and method for that wireless exploration is merged with communication - Google Patents
A kind of region danger early warning System and method for that wireless exploration is merged with communication Download PDFInfo
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- CN106028352B CN106028352B CN201610312987.XA CN201610312987A CN106028352B CN 106028352 B CN106028352 B CN 106028352B CN 201610312987 A CN201610312987 A CN 201610312987A CN 106028352 B CN106028352 B CN 106028352B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9328—Rail vehicles
Abstract
The invention discloses the region danger early warning System and method fors that a kind of wireless exploration is merged with communication, public network or private network authorized spectrum band RRU and millimeter wave frequency band RRU are disposed using cloud wireless network architecture, rationally utilize public network or the characteristic of private network authorized spectrum band and millimeter wave frequency band, while carrying out vicinity environment detection, realize that highly reliable large capacity wirelessly communicates using idling-resource, and reaches the purpose of danger early warning to ground monitoring center by communication function feedback environment detection result.Public network or private network authorized spectrum band physical layer frame are used for transmission low capacity reliable wireless communication data, and millimeter wave frequency band marks off detection frame and wireless communication frame in time according to demand, and millimeter wave frequency band RRU carries out the transmitting-receiving of environment detection signal in detection frame time；The non-reliable communication data of millimeter wave frequency band RRU transmission of large capacity in wireless communication frame time, and devise the up-downlink direction data transmission signaling process that public network or private network authorized spectrum band in wireless communication frame time are merged with millimeter wave frequency band.
Description
Technical field
The present invention relates to wireless exploration and the communications fields, more particularly to realize millimeter wave on the basis of cloud wireless network architecture
The System and method for that frequency range wireless exploration is merged with communication.
Background technique
In previous communication system, transmission characteristic preferably public network or private network authorized spectrum band is mainly used (to be lower than
The frequency range of 3.5GHz), and the high-frequency band higher than 5GHz rarely has and is related to, therefore these high-frequency bands still remain with very wide company
Continuous usable spectrum.It can appreciate that within the following quite a long time, Millimeter-wave Wireless Communication System will realize superelevation
The great economic benefit of fast data transmission and low cost.
Another important application of millimeter wave frequency band is high precision wireless detection.In recent years, infrastructure construction in china is sent out
Exhibition is rapid, but some traffic routes for being distributed in mountain area area of concentration such as highway, railway, tunnel, geological disaster take place frequently.One
There is phenomena such as landslide, landslide, mud-rock flow, snowslide, flood, foreign body intrusion in massif by denier road, then will affect traffic route
Operation security, also human life's safety and composition of estate can directly be endangered.Therefore, there is an urgent need to it is a set of can be in various days
Under the conditions of gas high-risk section long term monitoring and can to vehicular traffic provide early warning automatic monitoring and alarming system.
Pass through the retrieval discovery to existing patent and the relevant technologies, the existing scheme master about Natural calamity monitoring early warning
Will there are three types of:
(1) by laying radio transmission transducing device and monitoring base station [1] in the multiple location of disaster, monitoring base station obtains wireless
The real time data of transmission sensor.Sensor type include geologic shifts sensor, soil moisture sensor, precipitation rain fall sensor,
Boolean value output sensor or obliquity sensor etc., by the analytical judgment to sensor real time data, whether there is or not natural calamities for monitoring station
Occur.
(2) horizontal laser light irradiation is carried out to predetermined road section using laser, while acquires the image [2] of predetermined road section.When depositing
In laser reflection feature, and when determining that the Laser emission feature meets specified conditions, judge that there are barriers in the section, then
Judged using the visual aids of acquisition.
(3) in the key area that needs monitor, three-dimensional monitoring network [3] is constructed by radar.Landslide falling rocks
Object speed, distance, position is necessarily caused to change with roadbed collapsing, radar can capture these variations, and pass through meter
It calculates body form and away from location of rail, determines forecast grade and type.
In the above-mentioned prior art (1), radio transmission transducing device monitoring device and monitoring base station needs are close greatly along Along Railway
Degree is laid with, and maintenance cost is higher, and if exception occurs in operative sensor, leads to the failure of whole monitoring system, and its calamity
Evil early warning performance additionally depends on the reliability of information transfer channel.Meanwhile the program is confined to the monitoring to landslide, for falling
Stone, foreign body intrusion etc. lose monitoring function.
In the above-mentioned prior art (2), laser acquisition only in a planar detector, cannot detect the steric information of object.
Need additionally to illuminate predetermined road section using visible light in night detection, even so, rainfall, snowfall, haze etc. it is severe
There are in the case where jamming light source under weather condition or around road, the acquisition quality of image information will seriously affect, because
And when laser acquisition goes out abnormality, being unable to accurate judgement is which kind of disaster causes, and a large amount of false-alarms is caused to occur.
In the above-mentioned prior art (3), in order to which radar detection result is returned to monitoring center, need specially to build a set of prison
Network is controlled, recycling rate of waterused is low.It is lower due to there is the probability of disaster, and each radar works independently, and will cause radar signal
The waste of the redundancy and cost of process performance.After when ground, monitoring center receives pre-warning signal, since vehicle driving on the way may
There is no wireless signal, cannot directly be communicated with monitoring center, can only be forwarded by " natural calamity and geological disaster monitoring device ",
Increase system complexity.In addition, its frequency range used is public network or private network authorized spectrum band, bandwidth is low, and detection accuracy is limited.
Bibliography
[1] Zhang Wei, Xu Jun, Li Qi, Jia Jing, Liu Hongyi, Yue Tiezhu, the Landslide Hazards early warning system based on Internet of Things
Design, single-chip microcontroller answers with embedded system, 2013:13 (2): 66-69.
[2] Tianhe Electronic Technology Co., Ltd., Baoding, the monitoring method and its system of barrier: China,
200710165162.0[P].2012.09.05.
[3] Chengdu gets the better of logical science and technology limited Company, railway geological disaster forecasting and monitoring system: China,
201020584449.4[P].2011.05.04
Summary of the invention
In view of the deficiency of existing program set forth above, the present invention is intended to provide a kind of disposed based on cloud wireless network architecture
Wireless exploration and the region danger early warning System and method for that merges of communication, and be allowed to overcome the disadvantage mentioned above of the prior art.
To achieve the goals above, the technical solution of the invention is as follows:
A kind of region danger early warning system that wireless exploration is merged with communication, based on cloud wireless network architecture in millimeter wave frequency
Duan Shixian environment detection function is merged with wireless communication function, and system is by the pond BBU, switching fabric, public network or private network authorization frequency
Section RRU and millimeter wave frequency band RRU is formed；All RRU are connected to switching fabric by high speed passback, and switching fabric passes through high speed again
Passback is connected to the pond BBU；Public network or private network authorized spectrum band RRU press application scenarios demand and use omnidirectional or directional aerial, carry out big
Range covering；Millimeter wave frequency band RRU arranges antenna array, is oriented wave cover using beamforming technique；In a public network
Or the multiple millimeter wave frequency band RRU of arrangement in the coverage area of private network authorized spectrum band RRU.
The present invention also aims to provide a reliable working method, means for above system are as follows:
A kind of region danger early warning method that wireless exploration is merged with communication, public network or private network authorized spectrum band RRU are responsible for low
The transmission of capacity reliable communication data, millimeter wave frequency band RRU timesharing carries out environment detection and the non-reliable communication data of large capacity pass
It is defeated, including following specific means:
(1) two kinds of working frequency range, respectively public network or private network authorized spectrum band and millimeter wave frequency band are used in system；Accordingly
Two class RRU, respectively public network or private network authorized spectrum band RRU and millimeter wave frequency band RRU are disposed in ground；
(2) public network or private network authorized spectrum band physical layer frame are completely used for wireless communication frame；Millimeter wave frequency band physical layer frame is pressed
Time is divided into detection frame and wireless communication frame；
(3) for detecting function, in detection frame time, millimeter wave frequency band RRU sends detectable signal, and receives echo letter
Number, echo-signal high speed is then passed back into the pond BBU and is processed, environment detection result is obtained；
(4) for communication function, mobile terminal is subordinated to two RRU simultaneously, and wherein low capacity reliable communication data are by public affairs
Net or private network authorized spectrum band RRU are responsible for transmitting-receiving；The non-reliable communication data of large capacity are by millimeter wave frequency band RRU in wireless communication frame
It is interior to be received and dispatched, meanwhile, environment detection result is needed by application scenarios by public network or private network authorized spectrum band RRU or millimeter wave frequency
Section RRU is transferred to mobile terminal in wireless communication frame time.
When carrying out the distribution of millimeter wave frequency band physical layer frame, the allocation proportion for detecting frame and wireless communication frame can be by actual field
Scape demand is adjusted.As shown in Figure 2 and Figure 3, by taking railway scene as an example, the pond BBU is according to train current location information and millimeter wave
Frequency range RRU high speed feeding back signaling (such as initial access and hand off signaling) judges whether have in millimeter wave frequency band RRU coverage area
Train passes through.When there is train to pass through, millimeter wave frequency band is completely used for communicating, spread radio communication capacity.When no train passes through
When, according to TDD wireless communication system, millimeter wave frequency band is completely used for environment detection；According to FDD wireless communication system, milli
Metric wave uplink band carrying detection frame is used for environment detection, and band downlink still can be used for downlink wireless communication.
In wireless communication frame time, mobile terminal is subordinated to two RRU, respectively public network or private network authorized spectrum band simultaneously
RRU and millimeter wave frequency band RRU.In downlink communication direction, millimeter wave frequency band RRU is sent with public network or private network authorized spectrum band RRU
Downlink reference signal, mobile terminal carries out channel measurement, and the channel measurement of two frequency ranges is sent to public network or private network
Authorized spectrum band RRU, then these channel informations high speed is returned to the pond BBU by public network or private network authorized spectrum band RRU, the pond BBU according to
Channel information carries out the resource allocation of two frequency ranges, and allocation result is returned at a high speed to millimeter wave frequency band RRU and public network or special
Net authorized spectrum band RRU, last millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU carry out down according to resource allocation result
The transmission of row data.
In wireless communication frame uplink communication direction, mobile terminal is sent out in millimeter wave frequency band and public network or private network authorized spectrum band
Send uplink reference signals, millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU carry out channel measurement, and by channel measurement
As a result the pond BBU is returned to, the pond BBU is distributed according to the ascending resource that channel information carries out two frequency ranges, and at a high speed by allocation result
Public network or private network authorized spectrum band RRU are returned to, then resource allocation result is sent to movement by public network or private network authorized spectrum band RRU
Terminal, last mobile terminal carry out the transmission of upstream data according to resource allocation result.
In wireless communication frame time, need by application scenarios by public network or private network authorized spectrum band RRU or millimeter wave frequency band
Millimeter wave frequency band RRU is detected the environment detection result in frame time and is sent to ground monitoring center by RRU, realizes danger early warning etc.
Function.
Using the present invention, high-precision based on millimeter wave frequency band, round-the-clock, a wide range of, quick environment detection are realized.
And the bandwidth of wireless communication system is extended using the idling-resource of millimeter wave frequency band when non-detection, transmission capacity is improved, together
When, public network or private network authorized spectrum band have ensured the transmission reliability wirelessly communicated.In above-mentioned emerging system, environment detection result
It needs to be transferred in wireless communication frame time by public network or private network authorized spectrum band RRU or millimeter wave frequency band RRU by application scenarios
The functions such as high-precision danger early warning are realized at ground monitoring center.
Detailed description of the invention:
Fig. 1 is the wireless exploration of (but being not limited to the scene) and logical by taking railway scene as an example based on the embodiment of the present invention
Believe the system deployment figure of fusion.
Fig. 2 is that the pond BBU detects frame to millimeter wave frequency band under scene shown in Fig. 1 and communication frame distributes control flow.
Fig. 3 is the physical layer frame structure under scene shown in Fig. 1；Wherein: being (a) frame structure under TDD wireless communication system
Figure；It (b) is the frame structure diagram under FDD wireless communication system.
Fig. 4 is to wirelessly communicate down direction data in frame time under scene shown in Fig. 1 to transmit signaling process.
Fig. 5 is to wirelessly communicate up direction data in frame time under scene shown in Fig. 1 to transmit signaling process.
Specific embodiment
In order to clarify the objects, technical solutions and advantages of the present invention, with reference to the accompanying drawing by taking railway scene as an example
As a kind of exemplary embodiments (but being not limited to the scene), the invention will be further described.Specific reality described herein
Example is applied only to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, dangerous pre- for the region merged based on wireless exploration of the present invention by taking railway scene as an example with communication
Alert system deployment, composition include the pond BBU, switching fabric, public network or private network authorized spectrum band RRU and millimeter wave frequency band RRU, RRU
It is connect by high speed passback with switching fabric, then switching fabric is connected to the pond BBU by high speed passback.Public network or private network authorization
Frequency range RRU is covered on a large scale, and millimeter wave frequency band RRU arranges antenna array, realizes that directional beam is covered by beamforming technique
Lid.Detailed process is as follows:
(1) whole system work is in two frequency ranges, respectively public network or private network authorized spectrum band and millimeter wave frequency band, wherein public
Net or private network authorized spectrum band can choose 800MHz-2GHz, and design parameter can refer to existing wireless communications network.Millimeter wave frequency band is pressed
Application scenarios demand is chosen, such as in view of atmospheric loss and detection accuracy select 19GHz frequency range, for bandwidth 1GHz, and hair
Penetrating power is 1 watt-hour, is 180m~2km up to detection range reference value under different signal processing technologies；Up to communication away from
It is 1km from reference value.
(2) as shown in Fig. 2, the pond BBU according to train current location information and millimeter wave frequency band RRU high speed feeding back signaling (such as
Initial access and hand off signaling) judge whether there is train to pass through in current millimeter wave frequency band RRU coverage area.If no train is logical
It crosses, then millimeter wave frequency band is believed echo for detecting frame, millimeter wave frequency band RRU emission detection signal and receives echo-signal
Number high speed passes back to the pond BBU and is handled, and realizes the detection to rail ambient enviroment.If have train operation, millimeter wave frequency band
For communication frame, and millimeter wave frequency band RRU is responsible for the transmitting-receiving of the non-reliable communication data of large capacity, public network or private network authorized spectrum band
RRU is responsible for the transmitting-receiving of low capacity reliable communication data.
(3) under railway applications scene, environment detection result high speed is passed back to ground monitoring center, ground prison by the pond BBU
Measured center judges the section running environment with the presence or absence of danger by prediction policy.Dangerous if it exists, ground monitoring is centrally generated
Danger early warning information simultaneously passes back at a high speed the pond BBU.According to the running route of current all trains, if the running route of certain trains
Comprising the Dangerous Area, it is current that the danger early warning high speed information that ground monitoring center is forwarded is passed back to these trains by the pond BBU
Public network or private network authorized spectrum band RRU belonging to section are run, is then believed the danger early warning by public network or private network authorized spectrum band RRU
Breath radios to these trains, realizes danger early warning etc..
(4) for different wireless communication systems, the communication frame of millimeter wave frequency band exists in resource division with detection frame
Difference.As shown in figure 3, public network or private network authorized spectrum band are used to wireless communication frame in TDD and FDD wireless communication system.With
For the case where downlink and up-link wireless communication frame distribution ratio of TDD wireless communication system are 3:2 (but being not limited to the situation), when
When having train driving in the coverage area of millimeter wave frequency band RRU, millimeter wave frequency band is used for wireless communication frame；When no train driving
When, millimeter wave frequency band is for detecting frame.In FDD wireless communication system, when having train in the coverage area of millimeter wave frequency band RRU
When driving, for millimeter wave uplink band for detecting frame, band downlink is still used for downlink wireless communication frame；When no train driving,
Millimeter wave frequency band is completely used for wireless communication frame.
(5) as shown in figure 4, in wireless communication frame downlink communication direction, millimeter wave frequency band RRU and public network or private network authorization are frequently
Section RRU sends downlink reference signal, and train carries out channel measurement, and the channel measurement of two frequency ranges is sent to public network
Or private network authorized spectrum band RRU, then these channel informations high speed is returned to the pond BBU, BBU by public network or private network authorized spectrum band RRU
Pond carries out the resource allocation of two frequency ranges according to channel information, and allocation result high speed is returned to millimeter wave frequency band RRU and public affairs
Net or private network authorized spectrum band RRU, last millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU are according to resource allocation result
Carry out the transmission of downlink data.
(6) as shown in figure 5, in wireless communication frame uplink communication direction, train is awarded in millimeter wave frequency band and public network or private network
Power frequency range sends uplink reference signals, millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU carries out channel measurement, and
Channel measurement is returned into the pond BBU, the pond BBU is distributed according to the ascending resource that channel information carries out two frequency ranges, and will be divided
Public network or private network authorized spectrum band RRU are returned to result high speed, then public network or private network authorized spectrum band RRU are by resource allocation result
It is sent to train, last train carries out the transmission of upstream data according to resource allocation result.
Using basic scheme of the invention, in actual implementation, a variety of different equivalent products can be derived, but all
According to the technical solution and its inventive concept of invention, it is subject to equivalent replacement and changes, be all considered to belong to the claim of invention
Protection scope.
Claims (4)
1. the region danger early warning system that a kind of wireless exploration is merged with communication, based on cloud wireless network architecture in millimeter wave frequency band
Realization environment detection function is merged with wireless communication function, and system is by the pond BBU, switching fabric, public network or private network authorized spectrum band
RRU and millimeter wave frequency band RRU is formed;All RRU are connected to switching fabric by high speed passback, and switching fabric passes through high speed again and returns
Biography is connected to the pond BBU；Public network or private network authorized spectrum band RRU press application scenarios demand and use omnidirectional or directional aerial, carry out big model
Enclose covering；Millimeter wave frequency band RRU arranges antenna array, is oriented wave cover using beamforming technique；In a public network or
The multiple millimeter wave frequency band RRU of arrangement in the coverage area of private network authorized spectrum band RRU；
Public network or private network authorized spectrum band RRU are responsible for the transmission of low capacity reliable communication data, and millimeter wave frequency band RRU timesharing carries out ring
Border detection and the non-reliable communication data transmission of large capacity, including following specific means:
(1) two kinds of working frequency range, respectively public network or private network authorized spectrum band and millimeter wave frequency band are used in system；Correspondingly, portion
Affix one's name to two class RRU, respectively public network or private network authorized spectrum band RRU and millimeter wave frequency band RRU；
(2) public network or private network authorized spectrum band physical layer frame are completely used for wireless communication frame；Millimeter wave frequency band physical layer frame is temporally
It is divided into detection frame and wireless communication frame；
(3) for detecting function, in detection frame time, millimeter wave frequency band RRU sends detectable signal, and receives echo-signal,
Then echo-signal high speed is passed back to the pond BBU to deal with, obtains environment detection result；
(4) for communication function, mobile terminal is subordinated to two RRU simultaneously, wherein low capacity reliable communication data by public network or
Private network authorized spectrum band RRU is responsible for transmitting-receiving；The non-reliable communication data of large capacity are by millimeter wave frequency band RRU in wireless communication frame time
It is received and dispatched；Meanwhile environment detection result is needed by application scenarios by public network or private network authorized spectrum band RRU or millimeter wave frequency band
RRU is transferred to mobile terminal in wireless communication frame time；
The pond BBU is according to train current location information and millimeter wave frequency band RRU high speed feeding back signaling, including is such as initially accessed and switches
Signaling judges whether have train to pass through in millimeter wave frequency band RRU coverage area；When there is train to pass through, millimeter wave frequency band is all used
In communication, spread radio communication capacity, when no train passes through, according to TDD wireless communication system, millimeter wave frequency band is all used
In environment detection；According to FDD wireless communication system, millimeter wave uplink band carrying detection frame is used for environment detection, downlink frequency
Section still can be used for downlink wireless communication.
2. the region danger early warning System and method for that wireless exploration according to claim 1 is merged with communication, feature exist
In: in the step (2) pond BBU according to application scenarios difference on demand adjustment millimeter wave frequency band frame structures detection frames and nothing
The time-sharing ratio of line communication frame.
3. the region danger early warning System and method for that wireless exploration according to claim 1 is merged with communication, feature exist
In: when using FDD wireless communication system, detection frame occupies the uplink band of millimeter wave frequency band, and band downlink still carries out positive normal open
Letter；When using TDD wireless communication system, detection frame occupies whole millimeter wave frequency bands, and only public network or private network authorized spectrum band are used for nothing
Line communication.
4. the region danger early warning System and method for that wireless exploration according to claim 1 is merged with communication, feature exist
In:
In wireless communication frame downlink communication direction, millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU send downlink ginseng
Signal is examined, mobile terminal carries out channel measurement, and the channel measurement of two frequency ranges is sent to public network or private network authorization frequency
Section RRU, then these channel informations high speed is returned to the pond BBU by public network or private network authorized spectrum band RRU, and BBU believes in pond according to channel
Breath carries out the resource allocation of two frequency ranges, and allocation result high speed is returned to millimeter wave frequency band RRU and public network or private network authorization
Frequency range RRU, last millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU are according to resource allocation result progress downlink data
Transmission；
In wireless communication frame uplink communication direction, mobile terminal is sent in millimeter wave frequency band and public network or private network authorized spectrum band
Row reference signal, millimeter wave frequency band RRU and public network or private network authorized spectrum band RRU carry out channel measurement, and by channel measurement
The pond BBU is returned to, the pond BBU is distributed according to the ascending resource that channel information carries out two frequency ranges, and allocation result high speed is returned
To public network or private network authorized spectrum band RRU, then resource allocation result is sent to mobile whole by public network or private network authorized spectrum band RRU
End, last mobile terminal carry out the transmission of upstream data according to resource allocation result.
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| CN109451430B (en) * | 2017-08-25 | 2021-09-14 | 华为技术有限公司 | Environment sensing method and communication equipment |
| CN112014809A (en) * | 2019-05-30 | 2020-12-01 | 华为技术有限公司 | Radar test method and device |
| EP4309398A1 (en) * | 2021-06-11 | 2024-01-24 | ZTE Corporation | Dual function radio access network node with wireless communication and sensing |
| CN113660639B (en) * | 2021-08-18 | 2023-07-14 | 电子科技大学 | Communication detection integrated system and method for ground base station of high-speed magnetic levitation train |
| CN113815909B (en) * | 2021-09-09 | 2023-10-27 | 中国人民解放军63920部队 | Uplink determining method and device for peer-to-peer mode combination configuration spacecraft |
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