CN206042379U - Portable digital base station system - Google Patents
Portable digital base station system Download PDFInfo
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- CN206042379U CN206042379U CN201620809124.9U CN201620809124U CN206042379U CN 206042379 U CN206042379 U CN 206042379U CN 201620809124 U CN201620809124 U CN 201620809124U CN 206042379 U CN206042379 U CN 206042379U
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- base station
- portable digital
- digital base
- access gateway
- public network
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Abstract
The utility model provides a portable digital base station system relates to the communication technology field. Portable digital base station system includes portable digital basic station, public network access gateway, wired access gateway and wireless access gateway, public network access gateway with portable digital basic station communication connection, wired access gateway with the wireless access gateway is used for respectively and communication system communication connection, the public network access gateway optional pass through wired access gateway or the wireless access gateway with communication system communication connection. The utility model provides a portable digital base station system has solved the problem of communication system cover blind area, and the network deployment is convenient nimble, and for policeman, fire control, policeman etc. Provide effectual guarantee to emergent events and daily communication support task, communication quality is stable simultaneously.
Description
Technical field
The utility model is related to communication technical field, in particular to a kind of portable digital base station system.
Background technology
The department such as public security, fire-fighting, People's Armed Police completes the communication system of the emergency command built at present, can cover major metropolitan areas
And important area, disclosure satisfy that substantially running service commander's needs.But existing communication system is mostly using optical cable transmission
Mode, therefore the impact of geographical environment and external factor is limited to, still Jing can not often reach use to cause communication system coverage
Using for family needs, and accident and periodic traffic support mission are still heavy.But Large scale construction base station eliminates unserviceable area
Obviously it is unrealistic, build fixed base stations high cost, cycle length of building a station (base station selection, equipment install, open-minded), base station reconnaissance difficult
Degree is big, limited range communication, link and base station equipment need Jing often to safeguard.
Therefore, how to improve signal cover, it is ensured that the signal of communication network extends to task support area and event
Burst area is becoming one problem demanding prompt solution of destinations traffic technical field.
Utility model content
The purpose of this utility model is to provide a kind of portable digital base station system, to improve above-mentioned problem.
What the utility model was realized in：
A kind of portable digital base station system, including：Portable digital base station, public network access gateway, access in radio gateway and nothing
Line access is closed, and the public network access gateway is connected with the portable digital base station communication, the access in radio gateway and described
Wireless access gateway is respectively used to be connected with communication system communication, and the public network access gateway is selectable wired to be connect by described
Function Access Gateway or the wireless access gateway are connected with the communication system communication.
Portable digital base station system as above, it is preferable that the public network access gateway is used for when wired being connect with described
When function Access Gateway disconnects communication, selection is connected with the communication system communication by the wireless access gateway.
Portable digital base station system as above, it is preferable that the quantity of the portable digital base station is multiple, Duo Gesuo
State portable digital base station to communicate to connect with the public network access gateway respectively, the portable digital base station system also includes exchanging control
Device processed, the exchange control unit are electrically connected between the public network access gateway and the access in radio gateway, and described
Between public network access gateway and the wireless access gateway.
Portable digital base station system as above, it is preferable that the portable digital base station includes：Duplexer, numeral connect
Receive unit, digital transmitting element, digital base stations controller, transmitting-receiving signaling controller and for communicating with the public network access gateway
Public network link gateway, the digital received unit and the digital transmitting element respectively with the duplexer and the number
Word base station controller be electrically connected with, it is described transmitting-receiving signaling controller respectively with the digital base stations controller and the public network link
Gateway be electrically connected with, the duplexer for carrying out signal isolation to the digital received unit and the data transmission unit,
The transmitting-receiving signaling controller is controlled for the signaling of conversion and voice call to control signaling, the digital base stations control
Device is for carrying out encoding and decoding and digital processing with voice signal.
Portable digital base station system as above, it is preferable that the portable digital base station also includes encryption/decryption mould
Block, the encrypting-decrypting module are electrically connected between the transmitting-receiving signaling controller and the public network link gateway, described to add
Close/deciphering module is encrypted to voice signal and the voice signal after encryption is decrypted for what is received.
Portable digital base station system as above, it is preferable that the portable digital base station also includes the storage for power supply
Battery.
Portable digital base station system as above, it is preferable that the public network access gateway and the public network link gateway
It is selectable to be communicated by public network voice channel or 3G/4G wireless tunnels.
Portable digital base station system as above, it is preferable that the public network access gateway and the public network link gateway
For when by the 3G/4G wireless tunnels communication failure, selecting the public network voice channel communication.
Portable digital base station system as above, it is preferable that the portable digital base station also includes signal antenna, described
Signal antenna is electrically connected with the duplexer.
Portable digital base station system as above, it is preferable that the portable digital base station is to communicate body based on DMR/PDT
The base station of system.
For prior art, the portable digital base station system that the utility model is provided has following beneficial effect：
The utility model provide portable digital base station system can by portable digital base station to scene digital terminal (such as
Intercom, vehicle radio station etc.) voice signal that sends locally directly forwarded, and realizes digital terminal in local certain model
Emergency communication in enclosing is covered.It is simultaneously logical with original by public network access gateway, access in radio gateway or wireless access gateway
Letter system is communicated to connect, and is realized the connected network communication with command centre, is solved the problems, such as communication system coverage hole, and networking side
Just flexibly, effectively guarantee is provided to accident and periodic traffic support mission for public security, fire-fighting, People's Armed Police etc..In addition,
Using it is selectable by access in radio gateway or wireless access gateway and communication system communication by the way of, it is ensured that with command centre
Communication quality is stable.
For enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by coordinating, is described in detail below.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the utility model embodiment, below will be to using needed for embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
The block diagram representation of the portable digital base station system that Fig. 1 is provided for the utility model first embodiment；
Fig. 2 is the functional block diagram of portable digital base station in Fig. 1；
The block diagram representation of the another portable digital base station system that Fig. 3 is provided for the utility model first embodiment.
Wherein, the corresponding relation between reference and component names is as follows：
Portable digital base station 100, duplexer 101, digital received unit 102, digital transmitting element 103, digital base stations control
Device processed 104, receives and dispatches signaling controller 105, public network link gateway 106, encrypting-decrypting module 107, battery 108, signal antenna
109, public network access gateway 200, access in radio gateway 300, wireless access gateway 400, communication system 500, exchange control unit
600。
Specific embodiment
The department such as public security, fire-fighting, People's Armed Police completes the communication system of the emergency command built at present, can cover major metropolitan areas
And important area, disclosure satisfy that substantially running service commander's needs.But existing communication system is mostly using optical cable transmission
Mode, therefore the impact of geographical environment and external factor is limited to, still Jing can not often reach use to cause communication system coverage
Using for family needs, and accident and periodic traffic support mission are still heavy.But Large scale construction base station eliminates unserviceable area
Obviously it is unrealistic, build fixed base stations high cost, cycle length of building a station (base station selection, equipment install, open-minded), base station reconnaissance difficult
Degree is big, limited range communication, link and base station equipment need Jing often to safeguard.Therefore, how to improve signal cover, it is ensured that communication
It is urgently to be resolved hurrily to become destinations traffic technical field one that the signal of network extends to task support area and event burst area
Problem.Inventor is through long-term observation and studies discovery, it is proposed that the portable digital base station provided by the utility model embodiment
System.
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than the reality of whole
Apply example.The component of the utility model embodiment generally described and illustrated in accompanying drawing herein can be come with a variety of configurations
Arrangement and design.Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit
Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on the utility model
Embodiment, the every other embodiment obtained on the premise of creative work is not made by those skilled in the art, all
Belong to the scope of the utility model protection.
First embodiment
Fig. 1 is referred to, the utility model embodiment provides a kind of portable digital base station system, the portable digital base station is
System includes portable digital base station 100, public network access gateway 200, access in radio gateway 300 and wireless access gateway 400.Its
In, public network access gateway 200 is communicated to connect with portable digital base station 100, access in radio gateway 300 and wireless access gateway 400
It is respectively used to and the communication system 500 built well such as digital simulcasting system, PDT (pro digital cluster, Professional
Digital Trunking) communication connection such as system, public network access gateway 200 it is selectable by wireless access gateway 400 or
Access in radio gateway 300 is communicated to connect with the communication system 500.
Portable digital base station 100 communicates system based on DMR/PDT, is capable of achieving on-site terminal (such as digital handset, vehicle mounted electric
Platform etc.) cover in local a range of emergency communication, it is capable of achieving intercom individual calling, group and exhales, generally calls and urgent call etc.
Various method of callings, and realize and communicate by public network access gateway 200, access in radio gateway 300 or wireless access gateway 400
The command centre of the connection of system 500 carries out connected network communication, realizes emergency communication function, solves 500 coverage hole of communication system
Problem, and networking is convenient, flexible, accident and periodic traffic support mission has been provided for public security, fire-fighting, People's Armed Police etc.
The guarantee of effect.
Fig. 2 is referred to, portable digital base station 100 includes duplexer 101, digital received unit 102, digital transmitting element
103rd, digital base stations controller 104, transmitting-receiving signaling controller 105, encrypting-decrypting module 107, for public network access gateway
200 communication public network link gateways 106, for power supply battery 108 and signal antenna 109.Wherein, digital received unit
102 and digital transmitting element 103 be respectively electrically connected with duplexer 101 and digital base stations controller 104, digital base stations control
Device processed 104, transmitting-receiving signaling controller 105, encrypting-decrypting module 107 and public network link gateway 106 are electrically connected with successively, signal
Antenna 109 is electrically connected with duplexer 101.
Duplexer 101, digital received unit 102, digital transmitting element 103 and the composition of digital base stations controller 104 one
Individual digital PDT base stations, the PDT communication systems of its compatible Ministry of Public Security can forward to the signal in its range of receiving, solve to connect
The problem of covering is communicated in the range of receipts, and digital PDT base stations there are digital conventional and two kinds of mode of operations of PDT clusters, can be by scene
The selection operation of terminal (such as digital handset) switches between two kinds of mode of operations of digital routine and PDT clusters, and numeral is conventional
The preset 16 forwardings channel of pattern is selected, it is to avoid frequency interferences.Wherein, duplexer 101 is used for launching and receives signal
Isolation, it is ensured that receiving and send can be while normal work.
Digital base stations controller 104 for carrying out encoding and decoding and digital processing to voice signal, the voice signal for receiving
After the process of digital base stations controller 104, lead up to digital transmitting element 103 and locally forwarded, so as to portable number
Local terminal in 100 coverage of word base station receives the signal, carries out signaling via transmitting-receiving signaling controller 105 successively all the way
Control, encrypting-decrypting module 107 sent to public network access gateway 200 by public network link gateway 106 after being encrypted, so as to
Command centre carries out normal cluster communication, and when public network link passage is closed, portable digital base station 100 is then only done local communication and turned
Send out.
Transmitting-receiving signaling controller 105 realizes the conversion to control signaling, and intercom call has individual calling, group exhale, generally call, promptly
The various modes such as calling.Meanwhile, when by public network link gateway 106 with command centre's combined network communication, just need to be by receiving and dispatching letter
Make controller 105 that this several call mode is converted to corresponding signaling to be transmitted, while in the beginning conversed with the end of
The control for increasing speech recognition signaling to realize conversing using transmitting-receiving signaling controller 105.
As public network transmission is open, there is hidden danger, voice signal be possible to during transmission by
Steal and monitoring.Therefore, the encryption/decryption mould being electrically connected between transmitting-receiving signaling controller 105 and public network link gateway 106
Block 107, Jing certain algorithm can be encrypted before voice signal is transferred to public network link gateway 106, make transmission ring
The audio encryption of section, in receiving terminal through decrypting, restores voice signal.If voice signal is illegally stolen, do not have
Corresponding decruption key, is to parse correct voice signal, so as to ensure the safe transmission of information.
In the present embodiment, signal antenna 109 can adopt telescopic antenna or whip antenna, and telescopic antenna and whip antenna are portable
Lightly, simple compact and conveniently moving.In addition, need to such as expand the coverage area, can also external sucker antenna or signal gain day
Line.
As described in Figure 3, in the present embodiment, the quantity of portable digital base station 100 can be it is multiple, specifically can be according to actual reality
Border situation accordingly increases and decreases, and when the quantity of portable digital base station 100 is multiple, portable digital base station system also needs to accordingly increase
One exchange control unit 600, the exchange control unit 600 be electrically connected at public network access gateway 200 and access in radio gateway 300 it
Between, and between public network access gateway 200 and wireless access gateway 400.Exchange control unit 600 is for portable digital base station system
Signal in system between multiple portable digital base stations 100 carries out forwarding control.It is assumed that in taking digital base station system comprising 3 just
Digital base stations 100 are taken, for convenience of describing, 3 portable digital base stations 100 are calculated as base station 1,2,3 respectively.With a complete calling
As a example by flow process, the on-site terminal in 1 signal cover of base station initiates calling, and the digital received unit 102 of base station 1 is received now
The voice signal of terminal, an and point two-way is sent to digital base stations controller 104, wherein all the way voice signal by digital base stations control
Device processed 104 is transmitted directly to digital transmitting element 103, is locally forwarded by digital transmitting element 103, ensures the letter of one's respective area
Number cover, the on-site terminal (such as intercom) of one's respective area can be all communicated in the range of base station 1 covers.Another road voice letter
Number encoded by digital base stations controller 104, and be sent to transmitting-receiving signaling controller 105,105 pairs of volumes of transmitting-receiving signaling controller
Voice signal after code carries out signaling control, by public network link gateway 106 after then encrypted/107 encryption of deciphering module
Transmit to public network access gateway 200, call signal is sent to into exchange control unit 600 by public network access gateway 200 again then.Voice
600 points by exchange control unit of signal is two-way, and Jing access in radio gateway 300 or wireless access gateway 400 are uploaded to communication all the way
Send after system to command centre, another road Jing public networks access gateway 200 is sent to base station 2 and base station 3, and base station 2 and base station 3 will
Speech signal carries out Signalling conversion by transmitting-receiving signaling controller 105 after its encrypting-decrypting module 107 is decrypted, then again by
Digital base stations controller 104 is decoded, and is finally locally forwarded by digital transmitting element 103 again, so as to define this 3
The combined network communication of individual portable digital base station 100.In the same manner, command centre is from commander to 100 call flow of portable digital base station
Calling Jing communication systems 500 that the heart is initiated, then through access in radio gateway 300 or wireless access gateway 400, to speech signal and
After signaling is encrypted, exchange control unit 600 is delivered to, the speech signal and signaling Jing public network access gateway 200 after encryption
Deliver to the public network link gateway 106 of 3 portable digital base stations 100, the encryption/solution of 3 portable digital base stations 100 afterwards respectively
Close module 107 decrypts the speech signal after the encryption and signaling, and carries out Signalling conversion by transmitting-receiving signaling controller 105, then
Decoded by digital base stations controller 104 again, finally locally forwarded by digital transmitting element 103 again, one's respective area
On-site terminal can receive the calling from command centre.
In the present embodiment, battery 108 adopts 12V/40AH lithium batteries, 12V/40AH lithium batteries ensure portable digital base
The continuation of the journey ability to work stood 100 about 48 hours, it is ensured that the normal working hours of portable digital base station 100 is lasting.In addition, portable number
Word base station 100 can also be configured the power supply interface of direct current 12V, when portable digital base station 100 is arranged on automobile, can pass through automobile
On cigar lighter socket portable digital base station 100 is powered.
Portable digital base station 100 can pass through 400 liang of access in radio gateway 300 or wireless access gateway with communication system 500
The mode of kind communicates, and access in radio gateway 300 is system-level interconnection, needs public network access gateway 200 and 300 both sides of access in radio gateway
Open communications protocol, carries out the control of signaling and language.Wireless access gateway 400 is open wireless access.Wired access network
Close 300 to backup each other with wireless access gateway 400, when portable digital base station 100 passes through access in radio gateway with communication system 500
During 300 disconnecting, can autotomy to be changed to is connected with communication system 500 by wireless access gateway 400, and completion system connection
Redundancy backup.
Access in radio gateway 300 is the bridge of the voice, control signaling and the interconnection of communication system 500 of portable digital base station 100
Beam, due to the agreement that the digital display circuit of each producer has which privately owned, carries out intarconnected cotrol, needs public affairs between different digital display circuits
The communications protocol of correlation is opened, access in radio gateway 300 can be a 100 virtual base for communication system 500 of portable digital base station
Stand.
Wireless access gateway 400 is the backup of access in radio gateway 300 and supplement, when mutual communications protocol can not be reached
When consistent or communication network interrupts, can realize that communication system 500 is entered with portable digital base station 100 by wireless access gateway 400
Row interconnection, so as to reach the purpose of access communications system 500, completes distal end portable digital base station 100 mutual with communication system 500
Connection.Independent wireless access gateway 400 is not necessarily mounted at command centre, can the optional position of effectively access system base station can all enter
Row installs arrangement.
Public network access gateway 200 is selectable with public network link gateway 106 wireless by public network voice channel or 3G/4G
Network channel communicates, i.e., communication system 500 has two kinds with the communication pattern of portable digital base station 100：Phone direct mode operation and net
Network 3G/4G patterns.Phone direct mode operation operation principle is command centre and portable digital base station 100 in public network access gateway 200
Transmission port be directly simulated the transmitting-receiving of voice signal, the automatic dialing command centre end first of portable digital base station 100
Telephone number, command centre end are in answer mode after receiving calling immediately, and duplex carries out the transmission of voice, set up the logical of voice
News link.The voice signal of simulation delivers to digital transmitting element after the decoding and digital processing of digital base stations controller 104
103.Network 3G/4G patterns operation principle is to set up the connection of wireless network between command centre and portable digital base station 100, is led to
Cross the public network server patch analog communication traffic rented.This mode carries out packing biography by specific communications protocol to data flow
Defeated, audio digital signals can directly carry out network transmission with signaling, audio quality be transmitted lossless through digital-to-analogue conversion without the need for again
Consumption.
The portable digital base station system that the present embodiment is provided can pass through the live digital terminal in portable digital base station 100 pairs
The voice signal that (such as intercom, vehicle radio station etc.) sends locally directly is being forwarded, and realizes digital terminal local one
The emergency communication determined in scope is covered.Pass through public network access gateway 200, access in radio gateway 300 and wireless access gateway simultaneously
400 are communicated to connect with original communication system 500, realize the connected network communication with command centre, are solved communication system and are covered blind
The problem in area, and networking is convenient, flexible, accident and periodic traffic support mission is provided for public security, fire-fighting, People's Armed Police etc.
Effective guarantee.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets
Put ", " installation ", should be interpreted broadly " being connected ", " connection ", for example, it may be fixedly connected, or be detachably connected,
Or be integrally connected；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to by intermediary
It is indirectly connected to, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then in subsequent accompanying drawing which further need not be defined and is explained.
In description of the present utility model, it should be noted that term " " center ", " on ", D score, "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or position relationship, or
The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter
Change description, rather than indicate or imply indication device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " etc. are only used for area
Divide description, and it is not intended that indicating or implying relative importance.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (10)
1. a kind of portable digital base station system, it is characterised in that include：Portable digital base station, public network access gateway, access in radio
Gateway and wireless access gateway, the public network access gateway are connected with the portable digital base station communication, the wired access network
Close and the wireless access gateway is respectively used to be connected with communication system communication, the public network access gateway is selectable by institute
State access in radio gateway or the wireless access gateway is connected with the communication system communication.
2. portable digital base station system according to claim 1, it is characterised in that the public network access gateway be used for when with
When letter is opened in the wired access network shut-off, selection is connected with the communication system communication by the wireless access gateway.
3. portable digital base station system according to claim 1, it is characterised in that the quantity of the portable digital base station is
Multiple, multiple portable digital base stations are communicated to connect with the public network access gateway respectively, the portable digital base station system
Also include exchange control unit, the exchange control unit be electrically connected at the public network access gateway and the access in radio gateway it
Between, and between the public network access gateway and the wireless access gateway.
4. portable digital base station system according to claim 1, it is characterised in that the portable digital base station includes：It is double
Work device, digital received unit, digital transmitting element, digital base stations controller, transmitting-receiving signaling controller and for the public network
The public network link gateway of access gateway communication, the digital received unit and the digital transmitting element respectively with the duplex
Device and the digital base stations controller are electrically connected with, the transmitting-receiving signaling controller respectively with the digital base stations controller and
The public network link gateway is electrically connected with, and the duplexer is for entering with the digital transmitting element to the digital received unit
Row signal isolation, the transmitting-receiving signaling controller are controlled for the signaling of conversion and voice call to control signaling, described
Digital base stations controller is for carrying out encoding and decoding and digital processing with voice signal.
5. portable digital base station system according to claim 4, it is characterised in that the portable digital base station also include plus
Close/deciphering module, the encrypting-decrypting module be electrically connected at it is described transmitting-receiving signaling controller and the public network link gateway it
Between, the encrypting-decrypting module is encrypted to voice signal and the voice signal after encryption is carried out for what is received
Decryption.
6. portable digital base station system according to claim 4, it is characterised in that the portable digital base station also includes using
In the battery of power supply.
7. portable digital base station system according to claim 4, it is characterised in that the public network access gateway and the public affairs
Network chain road network pass is selectable to be communicated by public network voice channel or 3G/4G wireless tunnels.
8. portable digital base station system according to claim 7, it is characterised in that the public network access gateway and the public affairs
Network chain road network is closed for when by the 3G/4G wireless tunnels communication failure, selecting the public network voice channel communication.
9. portable digital base station system according to claim 4, it is characterised in that the portable digital base station also includes letter
Number antenna, the signal antenna are electrically connected with the duplexer.
10. portable digital base station system according to claim 1, it is characterised in that the portable digital base station be based on
DMR/PDT communicates the base station of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809124.9U CN206042379U (en) | 2016-07-29 | 2016-07-29 | Portable digital base station system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620809124.9U CN206042379U (en) | 2016-07-29 | 2016-07-29 | Portable digital base station system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206042379U true CN206042379U (en) | 2017-03-22 |
Family
ID=58307894
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620809124.9U Active CN206042379U (en) | 2016-07-29 | 2016-07-29 | Portable digital base station system |
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| CN (1) | CN206042379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784459A (en) * | 2020-06-10 | 2021-12-10 | 成都鼎桥通信技术有限公司 | Communication apparatus and communication system |
-
2016
- 2016-07-29 CN CN201620809124.9U patent/CN206042379U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784459A (en) * | 2020-06-10 | 2021-12-10 | 成都鼎桥通信技术有限公司 | Communication apparatus and communication system |
| CN113784459B (en) * | 2020-06-10 | 2023-09-22 | 成都鼎桥通信技术有限公司 | Communication device and communication system |
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