CN104380619A - Remote wireless base station device having in-house expandability and in-building relay system - Google Patents
Remote wireless base station device having in-house expandability and in-building relay system Download PDFInfo
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- CN104380619A CN104380619A CN201280073385.3A CN201280073385A CN104380619A CN 104380619 A CN104380619 A CN 104380619A CN 201280073385 A CN201280073385 A CN 201280073385A CN 104380619 A CN104380619 A CN 104380619A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a remote wireless base station device having in-house expandability and an in-building relay system is disclosed. The remote wireless base station device according to one embodiment of the present invention includes: a CPRI/OBSAI signal processing unit that is connected to a base station control unit by means of a first cable and that transmits information to and receives information from the base station control unit using a first digital communication scheme; and a master UTP interface transceiver that converts a first digital communication type signal received from the CPRI/OBSAI signal processing unit into a second digital communication type signal without an analog signal conversion process, and converts the second digital communication type signal, received from a plurality of distribution devices that are connected to each other by means of a second cable and installed at the shaded regions of buildings, into the first digital communication type signal without an analog signal conversion process.
Description
Technical field
The present invention relates to indoor relay system, particularly, realize all in a digital manner in decentralized base station system Signal transmissions between base station control unit and the long distance wireless base station apparatus being located at building and above-mentioned long distance wireless base station apparatus be located at build in (blind area, multiple shadow region, shielded area) each in dispersal device between Signal transmissions, and without the technology of analog signal transfer process.
Background technology
Usually, mobile communication service system is made up of base station, base station controller, switching center and terminal.Base station and terminal are at certain frequency bands for communication, and each base station has certain call radius.Therefore, suitably configure multiple base station, the call radius of each base station is overlapped each other, thus expand the region that can converse.But, even if cover whole city by the so multiple base station of configuration, still there will be in the underground space of area, island or building and high building inside the call shadow region (blind area, shielded area) cannot carrying out conversing.For solving such generation in call shadow region and one of solution of enlarged area arranges relay system.According to suitable application region or trunking scheme, relay system comprises light relay system, RF relay system, microwave relay system and indoor (In-building) relay system etc.Use light relay system at city central authorities or Outlying area etc., visibility, for using microwave relay system during number Km, uses indoor relay system in community, building and underground parking etc.
Above-mentioned existing indoor relay system is located at the roof etc. of base station, building, and can comprise wireless or be wired at the main device of above-mentioned base station and be wired at above-mentioned main device and be located at multiple dispersal devices in multiple shadow regions of above-mentioned building respectively.
Above-mentioned base station and main device by wireless or wired transmitting-receiving RF signal (analog signal), above-mentioned main device and multiple dispersal device transceiving digital signals.
Therefore, the RF signal (analog signal) sent from above-mentioned base station is subject to the impact of noise etc. and distortion the process being transferred to main device, main device receives the RF signal of Quality Down, thus main device is transferred to above-mentioned multiple dispersal device after the RF signal of Quality Down is converted to digital signal, therefore, above-mentioned multiple dispersal device receives the signal because of distortions such as noises, finally, the terminal occurring being positioned at the shadow region that above-mentioned multiple dispersal device covers receives the problem of low-quality signal, and the problem reducing speech quality occurs.
Summary of the invention
Technical task
The invention provides and a kind of there is the long distance wireless base station apparatus of interior expansion and indoor relay system, in decentralized base station system, Signal transmissions between base station control unit and the long distance wireless base station apparatus being located at building and above-mentioned long distance wireless base station apparatus and being located at build in multiple shadow region dispersal device between Signal transmissions realize all in a digital manner, without analog signal transfer process, thus, can to the signal of multiple dispersal device high quality.
The technical problem to be solved in the present invention is not limited to the problems referred to above, those skilled in the art can not record according to content understanding below or other problems.
Technical scheme
Indoor relay system according to an aspect of the present invention, it comprises base station control unit, long distance wireless base station apparatus, is located in building, and is wiredly connected to described base station control unit by first, and, multiple dispersal device, be located in multiple shadow regions of described building, and be wiredly connected to described long distance wireless base station apparatus by second, described long distance wireless base station apparatus is by described first wired with the first digital communication mode and described base station control unit interactive information, and, described second wired with the second digital communication mode and described multiple dispersal device interactive information by what connect separately, when without carry out when analog signal transfer process between described first digital communication mode and the second digital communication mode signal conversion, the signal of described second digital communication mode and the mobile communication signal outputting to described shadow region or receive from described shadow region are changed by described dispersal device mutually.
Described first wired can be optical cable.
Described second wired can be UTP (Unshielded Twisted Pair) cable.
Described first digital communication mode can be common public radio interface (Common PublicRadio Interface:CPRI) or OBSAI (Open Base Station ArchitectureInitiative) communication mode.
Described second digital communication mode can be gigabit Ethernet (Gigabit Etheernet) communication mode.
Described long distance wireless base station apparatus can comprise: ac/dc power supply change-over device, supplies the DC power supply needed for action of described multiple dispersal device with power over ethernet supply mode (Power Over Ethernet:POE).
Described multiple dispersal device can comprise: DC-DC power supply change-over device, and the above-mentioned DC power supply with the supply of power over ethernet supply mode is converted to the DC power supply needed for Inner Constitution circuit operation.
According to a further aspect of the invention, long distance wireless base station apparatus comprises: CPRI/OBSAI signal processing part, is wiredly connected to base station control unit by first, and with the first digital communication mode and described base station control unit interactive information; And main UTP interface transceiver, when without signal when analog signal transfer process, the signal of the first digital communication mode received from described CPRI/OBSAI signal processing part being converted to the second digital communication mode, further, when without when analog signal transfer process by from respectively by the second wired connection and the signal of the second digital communication mode that the multiple dispersal devices being located at the shadow region of building receive is converted to the signal of the first digital communication mode.
Described long distance wireless base station apparatus also comprises: ac/dc power supply change-over device, supplies the DC power supply needed for described multiple dispersal device action with power over ethernet supply mode (Power Over Ethernet:POE).
Described long distance wireless base station apparatus also comprises: outer wireless output part within doors, for exporting the signal received from described base station control unit to Discussion on architecture, or from being positioned at multiple terminal received signals of described Discussion on architecture, be sent to described base station control unit by described CPRI/OBSAI signal processing part.
Invention effect
According to the long distance wireless base station apparatus with interior expansion and the indoor relay system of the embodiment of the present invention, Signal transmissions between base station control unit and the long distance wireless base station apparatus being located at building and above-mentioned long distance wireless base station apparatus and being located at build in multiple shadow region dispersal device between Signal transmissions realize all in a digital manner, and without analog signal transfer process, thus, the Mobile Communications Propagation shadow region occurred in building, apartment house, commercial street building etc. can be solved simply.
Further, signal can not be subject to the impact of noise etc. in the process being transferred to the multiple dispersal devices being arranged in shadow region from base station control unit by long distance wireless base station apparatus, and therefore, the multiple dispersal devices being positioned at shadow region can receive high-quality signal.
Adopt the power over ethernet supply mode (POE) by transmission of digital signals while of UTP cable and power supply, to maximally utilise to solve wiring problem the UTP cable arranged at existing interior of building, without the need to arranging power-supply wiring separately, thus, reduce the networking expense of common carrier, high efficiency operation and maintenance can be realized.
Accompanying drawing explanation
Fig. 1 is the structural representation of the indoor relay system according to the embodiment of the present invention.
Fig. 2 is the detailed construction schematic diagram of the long distance wireless base station apparatus shown in Fig. 1.
Fig. 3 is the detailed construction schematic diagram of the main UTP interface transceiver shown in Fig. 2.
Fig. 4 is the detailed construction schematic diagram of the dispersal device shown in Fig. 1.
Fig. 5 is the detailed construction schematic diagram of the dispersion UTP interface transceiver shown in Fig. 4.
Embodiment
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.When embodiments of the invention are described, think to function well known in the art or structure illustrate likely obscure purport of the present invention time, description is omitted.Further, the term that the following describes middle use considers that the function in the present invention defines, and can change according to the intention of user, fortune user or convention.Therefore, should give a definition based on the overall content of this specification.
Fig. 1 is the structural representation of the indoor relay system according to the embodiment of the present invention.
As shown in Figure 1, indoor relay system according to the present invention comprises base station control unit 1, is wiredly connected to base station control unit 1 and is located at the long distance wireless base station apparatus 2 of building and is wiredly connected to long distance wireless base station apparatus 2 respectively by second and is located at multiple dispersal devices 3 of in multiple shadow regions of above-mentioned building respectively by first.And, maximum transmission distance when the quantity of above-mentioned multiple dispersal device 3 exceedes port (Port) number that long distance wireless base station apparatus 2 has or in order to increase the signal that long distance wireless base station apparatus 2 transmits to dispersal device, can also comprise line concentration expanding element 4.
Long distance wireless base station apparatus 2 is wired with the first digital communication mode and base station control unit 1 interactive information by first, and, wired with the second digital communication mode and multiple dispersal device 3 (comprising the multiple dispersal devices be connected by line concentration expanding element 4) interactive information by connect separately second, the signal conversion between the first digital communication mode and the second digital communication mode is without analog signal transfer process.
Dispersal device 3 is changed mutually to the signal of the second digital communication mode and the mobile communication signal outputting to above-mentioned shadow region or receive from above-mentioned shadow region.At this moment, above-mentioned first wired can be optical cable, but as long as with the transmission medium of above-mentioned first digital communication mode interactive information between above-mentioned base station control unit 1 and long distance wireless base station apparatus 2, then all can be able to use.Above-mentioned second wired can be UTP (Unshielded Twisted Pair) cable, as long as but with the transmission medium of above-mentioned second digital communication mode interactive information between above-mentioned long distance wireless base station apparatus 2 and multiple dispersal device 3, then all can be able to use.Further, above-mentioned first digital communication mode can be common public radio interface (Common Public Radio Interface:CPRI) or OBSAI (Open Base Station Architecture Initiative) communication mode.That is, above-mentioned base station control unit 1 and long distance wireless base station apparatus 2 can pass through CPRI communication mode or OBSAI communication mode interactive information.In addition, above-mentioned second digital communication mode can be gigabit Ethernet (GigabitEthernet) communication mode.That is, long distance wireless base station apparatus 2 can pass through gigabit Ethernet communication mode interactive information with multiple dispersal device (comprising the multiple dispersal devices be connected by line concentration expanding element 4) 3.Thus, base station control unit 1 and long distance wireless base station apparatus 2 are by optical cable interactive digital signal, instead of interactive simulation signal, and, long distance wireless base station apparatus 2 and multiple dispersal device 3 also interactive digital signal, and without analog signal transfer process, therefore, signal can not be subject to the impact of noise etc. in the process being sent to multiple dispersal device from base station control unit 1 by long distance wireless base station apparatus 2, can the signal of high quality.
Long distance wireless base station apparatus 2 can comprise ac/dc power supply change-over device, provides the DC power supply needed for the action of multiple dispersal device 3 with power over ethernet supply mode (Power Over Ethernet:POE).Above-mentioned ac/dc power supply change-over device is described below.
Accordingly, above-mentioned multiple dispersal device 3 can comprise DC-DC power supply change-over device, for the DC power supply supplied with power over ethernet supply mode is converted to Inner Constitution circuit action needed for DC power supply.Above-mentioned DC-DC power supply change-over device is described below.Multiple dispersal device 3 utilizes with the DC power supply of power over ethernet supply mode supply, starts Inner Constitution circuit, therefore, without the need to arranging other ac/dc power supply change-over devices, thus can omit corresponding power-supply device construction.
Fig. 2 is the detailed formation schematic diagram of the long distance wireless base station apparatus shown in Fig. 1.
As shown in Figure 2, long distance wireless base station apparatus 2 comprises CPRI/OBSAI signal processing part 10, within doors outer wireless output part 11, main UTP interface transceiver 19, ac/dc power supply changeover device 20 and processor section 21.
CPRI/OBSAI signal processing part 10 is connected to base station control unit 1 by first wired (passing through optical cable as an embodiment), and with above-mentioned base station control unit 1 by the first digital communication mode (as an embodiment by common public radio interface (CPRI) or OBSAI communication mode) interactive information.
Outer wireless output part 11 comprises digital-to-analog converter section 12, rising transducer 13, high output amplifier 14, transmitting-receiving filter 15, low noise amplifier 16, decline transducer 17 and analog/digital conversion portion 18 within doors, the signal received from base station control unit 1 is exported to Discussion on architecture, or from being positioned at multiple terminals (not shown) Received signal strength of Discussion on architecture, thus be sent to base station control unit 1 by CPRI/OBSAI signal processing part 10.
The signal of the first digital communication mode is converted to analog signal by digital-to-analog converter section 12, the analog signal changed by above-mentioned digital-to-analog converter section 12 is risen to the frequency band of mobile communication signal by rising transducer 13, high output amplifier 14 amplifies the analog signal exported from above-mentioned rising transducer 13, the analog signal that transmitting-receiving filter 15 utilizes antenna (ANT) to be amplified to spatial emission by above-mentioned high output amplifier 14, low noise amplifier 16 carries out low noise amplification to the faint mobile communication signal received from terminal by antenna (ANT), the mobile communication signal amplified by above-mentioned low noise amplifier 16 is declined and is converted to intermediate frequency band by decline transducer 17, the mobile communication signal exported from above-mentioned decline transducer 17 is converted to digital signal by analog/digital conversion portion 18.
Main UTP interface transceiver 19 when without signal when analog signal transfer process, the signal of the first digital communication mode received from CPRI/OBSAI signal processing part 10 being converted to the second digital communication mode, and when without signal when analog signal transfer process, the signal of the second digital communication mode received from the multiple dispersal devices 3 connected by UTP cable being converted to the first digital communication mode.At this moment, the signal of the first digital communication mode can be the signal of CPRI communication mode or the signal of OBSAI communication mode, and the signal of the second digital communication mode can be gigabit ethernet signal.At this moment, main UTP interface transceiver 19 can be located on a substrate (board) with above-mentioned CPRI/OBSAI signal processing part 10 integral type, or is located at respectively on different substrates.
Ac/dc power supply changeover device 20 in order to supply be connected to multiple dispersal devices 3 of long distance wireless base station apparatus 2 by UTP cable action needed for DC power supply, AC power is converted to DC power supply, and is applied to main UTP interface transceiver 19.The DC power supply applied from ac/dc power supply changeover device 20 is supplied above-mentioned multiple dispersal device 3 with power over ethernet supply mode (PowerOver Ethernet:POE) by this main UTP interface transceiver 19.
Processor section 21 controls the action of above-mentioned rising transducer 13, high output amplifier 14, decline transducer 17.
Fig. 3 is the detailed formation schematic diagram of the main UTP interface transceiver shown in Fig. 2.
As shown in Figure 3, main UTP interface transceiver 19 comprises numeral/digital converter portion 191, gigabit physical layer converter 192 and power over ethernet feeder 193.
Numeral/digital converter portion 191 is connected to CPRI/OBSAI signal processing part 10 by internal wiring, the signal of first digital communication mode of connecting is converted to the signal of the second digital communication mode of the right parallel connection of n (natural number), as an embodiment, be converted to UTP digital signal in parallel, and carry out its reverse transformation.At this moment, numeral/digital converter portion 191 can by the signal of first digital communication mode, as the signal of an embodiment by the signal of CPRI communication mode or OBSAI communication mode, is converted to four right UTP digital signals in parallel.This is an embodiment, can change according to system status.
The UTP digital signal changed by numeral/digital converter portion 191 is converted to gigabit ethernet signal by gigabit physical layer converter 192, so that by UTP cable transmission, and carries out its reverse transformation.In one embodiment, adopt two kinds by the 1:4 mode be widely used in network of UTP cable transmitt or receive signal, connect at most 8 dispersal devices at a long distance wireless base station apparatus.
Power over ethernet feeder 193 supplies the DC power supply applied from ac/dc power supply changeover device 20 to multiple dispersal device 3 by UTP cable with power over ethernet supply mode (POE).
Fig. 4 is the detailed formation schematic diagram of the dispersal device shown in Fig. 1.
As shown in Figure 4, dispersal device 3 comprises dispersion UTP interface transceiver 30, digital-to-analog converter section 31, dispersion rising transducer 32, high output amplifier 33, dispersion transmitting-receiving filter 34, low noise amplifier 35, dispersion decline transducer 36, analog/digital conversion portion 37, DC-DC Power convert portion 38 and spreading processor portion 39.
Dispersion UTP interface transceiver 30 passes through the signal of UTP cable and mutual second digital communication mode of long distance wireless base station apparatus 2.
The signal of the second digital communication mode that dispersion UTP interface transceiver 30 receives is converted to the analog signal with intermediate frequency band by digital-to-analog converter section 31.
The above-mentioned analog signal with intermediate frequency band is risen to the frequency band of mobile communication signal by dispersion rising transducer 32.
High output amplifier 33 amplifies the above-mentioned analog signal rising to the frequency band of mobile communication signal.
The analog signal that dispersion transmitting-receiving filter 34 is amplified by above-mentioned high output amplifier 33 to the spatial emission in shadow region by antenna (ANT).
Low noise amplifier 35 carries out low noise amplification to the faint mobile communication signal that the antenna (ANT) by being connected to dispersion transmitting-receiving filter 34 receives from the terminal being positioned at shadow region.
The mobile communication signal being carried out low noise amplification by above-mentioned low noise amplifier 36 is declined and is converted to intermediate frequency band by dispersion decline transducer 36.
The mobile communication signal that above-mentioned dispersion decline transducer 36 is changed is converted to digital signal (i.e. the signal of the second digital communication mode) by analog/digital conversion portion 37.The signal of the second digital communication mode be converted to like this is transferred to long distance wireless base station apparatus 2 by dispersion UTP interface transceiver 30.
DC-DC power supply changeover device 38 by be converted to the Inner Constitution circuit of dispersal device 3 with the DC power supply that power over ethernet supply mode applies by dispersion UTP interface transceiver 30 action needed for DC power supply.Thus dispersal device 3 has other ac/dc power supply changeover devices without the need to the DC power supply needed for the action in order to obtain Inner Constitution circuit, thus, power-supply device construction can be omitted.
Spreading processor portion 39 controls the action of dispersion rising transducer 32, high output amplifier 33 and dispersion decline transducer 36.
Fig. 5 is the detailed formation schematic diagram of the dispersion UTP interface transceiver shown in Fig. 4.
As shown in Figure 5, UTP interface transceiver 30 is disperseed to comprise power over ethernet feeder 300, gigabit physical layer converter 301 and gigabit ethernet signal handling part 302.
The DC power supply supplied from long distance wireless base station apparatus 2 with power over ethernet supply mode (POE) by UTP cable is applied to DC-DC power supply changeover device 38 by power over ethernet feeder 300.
The signal of the second digital communication mode received from long distance wireless base station apparatus 2 by UTP cable (be gigabit ethernet signal as an embodiment) is converted to UTP digital signal by gigabit physical layer converter 301, and carries out its reverse transformation.
Parallel digital signal right for n (natural number) is converted to series connection by gigabit ethernet signal handling part 302, and carries out its reverse transformation.In one embodiment, four right UTP digital signals in parallel are converted to series connection, and carry out its reverse transformation.
As mentioned above, centered by embodiment, the present invention is described in detail.When not departing from substantive characteristics scope of the present invention, those skilled in the art realize the present invention by mode of texturing.Therefore, the disclosed embodiments, only for illustration of the present invention, are not used to limit the present invention.Thus protection scope of the present invention is not limited to aforesaid embodiment, the content recorded in claims and including in the present invention with the various execution modes of its equivalency range.
Industry utilizability
The present invention is applicable to the system development of moving communicating field.
Claims (14)
1. an indoor relay system, it comprises: base station control unit; Long distance wireless base station apparatus, if under construction, and is wiredly connected to described base station control unit by first; And multiple dispersal device, be located at a shadow region in multiple shadow regions of described building, and be wiredly connected to described long distance wireless base station apparatus by second, it is characterized in that,
Described long distance wireless base station apparatus is by described first wired with the first digital communication mode and described base station control unit interactive information, and, described second wired with the second digital communication mode and described multiple dispersal device interactive information by what connect separately, when without carry out when analog signal transfer process between described first digital communication mode and described second digital communication mode signal conversion
Described dispersal device is changed mutually to the signal of described second digital communication mode and the mobile communication signal outputting to described shadow region or receive from described shadow region.
2. indoor relay system according to claim 1, is characterized in that,
Described first wired be optical cable.
3. indoor relay system according to claim 1, is characterized in that,
Described second wired be UTP cable.
4. indoor relay system according to claim 1 and 2, is characterized in that,
Described first digital communication mode is common public radio interface or OBSAI communication mode.
5. the indoor relay system according to claim 1 or 3, is characterized in that,
Described second digital communication mode is gigabit Ethernet communication mode.
6. indoor relay system according to claim 5, is characterized in that,
Described long distance wireless base station apparatus comprises:
Ac/dc power supply change-over device, with the DC power supply needed for the action of the described multiple dispersal device of power over ethernet supply mode supply.
7. indoor relay system according to claim 6, is characterized in that,
Described multiple dispersal device comprises:
DC-DC power supply change-over device, is converted to the DC power supply needed for action of Inner Constitution circuit by the described DC power supply with the supply of power over ethernet supply mode.
8. a long distance wireless base station apparatus, is characterized in that, comprising:
CPRI/OBSAI signal processing part, is wiredly connected to base station control unit by first, and with the first digital communication mode and described base station control unit interactive information; And
Main UTP interface transceiver, when without signal when analog signal transfer process, the signal of the first digital communication mode received from described CPRI/OBSAI signal processing part being converted to the second digital communication mode, further, when without when analog signal transfer process by from respectively by the second wired connection and the signal of the second digital communication mode that the multiple dispersal devices being located at the shadow region of building receive is converted to the signal of the first digital communication mode.
9. long distance wireless base station apparatus according to claim 8, is characterized in that,
Described first wired be optical cable.
10. long distance wireless base station apparatus according to claim 8, is characterized in that,
Described second wired be UTP cable.
11. long distance wireless base station apparatus according to claim 8 or claim 9, is characterized in that,
Described first digital communication mode is common public radio interface or OBSAI communication mode.
Long distance wireless base station apparatus described in 12. according to Claim 8 or 10, is characterized in that,
Described second digital communication mode is gigabit Ethernet communication mode.
13. long distance wireless base station apparatus according to claim 8, is characterized in that, described long distance wireless base station apparatus also comprises:
Ac/dc power supply change-over device, with the DC power supply needed for the action of the described multiple dispersal device of power over ethernet supply mode supply.
Long distance wireless base station apparatus described in 14. according to Claim 8 or 13, is characterized in that, described long distance wireless base station apparatus also comprises:
Outer wireless output part within doors, for exporting the signal received from described base station control unit to Discussion on architecture, or from being positioned at multiple terminal received signals of described Discussion on architecture, is sent to described base station control unit by described CPRI/OBSAI signal processing part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0055188 | 2012-05-24 | ||
| KR1020120055188A KR101426339B1 (en) | 2012-05-24 | 2012-05-24 | UTP Cable Scalable Remote Radio Head and In-Building Repeater System including the Remote Radio Head |
| PCT/KR2012/009817 WO2013176356A1 (en) | 2012-05-24 | 2012-11-20 | Remote wireless base station device having in-house expandability and in-building relay system |
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| Publication Number | Publication Date |
|---|---|
| CN104380619A true CN104380619A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280073385.3A Pending CN104380619A (en) | 2012-05-24 | 2012-11-20 | Remote wireless base station device having in-house expandability and in-building relay system |
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| Country | Link |
|---|---|
| KR (1) | KR101426339B1 (en) |
| CN (1) | CN104380619A (en) |
| WO (1) | WO2013176356A1 (en) |
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| CN104994090A (en) * | 2015-06-29 | 2015-10-21 | 上海华为技术有限公司 | Data frame conversion method and device, communication node and communication system |
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| CN104507154B (en) * | 2014-11-20 | 2018-04-10 | 上海华为技术有限公司 | Data transmission method, communication equipment and communication system |
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| CN201585144U (en) * | 2009-09-28 | 2010-09-15 | 福建三元达通讯股份有限公司 | Novel double-frequency repeater system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994090A (en) * | 2015-06-29 | 2015-10-21 | 上海华为技术有限公司 | Data frame conversion method and device, communication node and communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013176356A1 (en) | 2013-11-28 |
| KR20130131558A (en) | 2013-12-04 |
| KR101426339B1 (en) | 2014-08-13 |
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