Co-cable transmission and MIMO is adopted to carry out system and the network-building method of quorum sensing inhibitorTechnical field
The present invention relates to wireless communication signals Covering domain, particularly relate to a kind of adopt co-cable transmission and MIMO technology to carry out quorum sensing inhibitor small base station (Small Cell) system and network-building method.
Background technology
In recent years, the speed fast continual development that once updates with every 10 years (even shorter time) of mobile radio communication network.Along with the fast development of mobile Internet, the data rate of user to mobile radio communication network is had higher requirement, and has promoted development and the evolution of wide-band mobile communication network further.In China, 3G just enters Rapid development stage, and large-scale 4G network test launches.But, even if having the support of 4G technology, due to increasing of indoor user, especially the increasing of house data user, the blocking and wall loss of building, and the factor such as spectral bandwidth and interference-limited, cause single macrocellular arrange net pattern oneself through can not meet user's high-speed seamless access demand.Therefore, industry needs a kind of solution that effectively can solve in-door covering problem and capacity problem badly.Small base station of the present invention (Small Cell) has the feature such as low-power consumption, self-organizing, operator can be helped well to realize indoor and arrange net, reduce the operation maintenance expense of network simultaneously, greatly can promote the universal of communications industry new technology and development.
At present, carrying out by laying special-purpose radio-frequency cable the difficulty that in-door covering also exists coordination aspect and construction aspect, therefore coupling communication signals being carried out co-cable transmission to register one's residence covering to having cable, is a very practical method.See from the perspective of policy, country accelerates to advance " integration of three networks " (telecommunications network, computer network, cable television network) process, and the fusion of Multi net voting has also become following information industry development direction.
MIMO technology and MIMO technique, in order to improve power system capacity, follow-on WiMAX mobile communication system will adopt MIMO technology, namely places multiple antenna in base station end, also place multiple antenna at travelling carriage, between base station and travelling carriage, form MIMO communication link.The WiMAX mobile communication system of using MIMO technique can be divided into two large classes from the multiple antennas laying method of base station end: a class is that multiple antenna for base station concentrates arrangement to form aerial array, and be positioned over coverage cell, this class can be called centralized MIMO; Another kind of is that the multiple antennas dispersion of base station is placed on coverage cell, can be called distributed MIMO.Utilize MIMO technology can improve the capacity of channel, also can improve the reliability of channel simultaneously, reduce the error rate.
The present invention expands the use scenes of small base station in conjunction with co-cable transmission technology and MIMO technology, has certain creativeness, practicality and perspective.
Summary of the invention
The object of this invention is to provide a kind of system adopting co-cable transmission and MIMO to carry out quorum sensing inhibitor, no matter whether the signal frequency that can realize the communication standard that small base station group is supported drops in frequency range shared by CATV signal, existing CATV cable can be utilized to realize the signal co-cable transmission of small base station group, and the high-speed high-quality amount can carrying out signal at far-end by the mimo antenna of multiple far-end capping unit accurately cover.
The present invention adopts following scheme to realize: a kind of system adopting co-cable transmission and MIMO to carry out quorum sensing inhibitor, is characterized in that: comprise
One near-end small base station group, described near-end small base station group one end is connected with Operator Core Network, and the other end has a plurality of signal transmitting and receiving port, supports the signal of communication of MIMO networking in order to transmitting-receiving;
A plurality of near-end combiner unit, the CATV signal that the CATV power splitter for receiving CATV bus exports and the signal of communication that described near-end small base station group is supported close road;
A plurality of far-end capping unit, described near-end combiner unit CATV cable of respectively hanging oneself is connected with each self-corresponding described far-end capping unit; This far-end capping unit by the CATV signal that receives by CATV cable transmission to TV, described signal of communication exports to mimo antenna.
In an embodiment of the present invention, described near-end small base station group one end is connected with the core net of operator by broadband backhaul mode.
In an embodiment of the present invention, described near-end small base station group comprises the small base station protocol process module and MIMO processing module that connect successively, the input of described small base station protocol process module is as the input of this near-end combiner unit, and the output of described MIMO processing module is described signal transmitting and receiving port.
In an embodiment of the present invention, described MIMO processing module is with frequency conversion function, when the signal frequency that this near-end small base station group receives drops in the frequency range shared by CATV signal, described MIMO processing module can be received and dispatched after this signal frequency conversion to a certain idle frequency range again.
In an embodiment of the present invention, also comprise a trapper, before described trapper is arranged at described CATV power splitter, for the signal outside filtering CATV frequency range.
Another object of the present invention is to provide a kind of network-building method adopting co-cable transmission and MIMO to carry out quorum sensing inhibitor, it is characterized in that: comprise down direction and up direction;
The processing mode of described down direction is:
There is provided a near-end small base station group, one end of this this near-end small base station group connects the core net of operator, and the other end exports the multiple signals supporting mimo antenna networking; If when the communication signal frequency supported drops in the frequency range shared by CATV signal, the MIMO processing module in near-end small base station group exports after then needing first signal of communication to be converted to a certain idle frequency range again; The CATV signal that the multichannel communication signal that near-end small base station group exports exports with CATV power splitter is respectively carried out conjunction road by multiple near-end combiner unit, then will close road Signal transmissions to corresponding far-end capping unit by CATV cable; The signal received is carried out shunt by this far-end capping unit, wherein CATV signal passes through CATV cable transmission to TV, described multichannel communication signal then exports to mimo antenna respectively, if signal of communication has through frequency-conversion processing in near-end small base station group, then export to mimo antenna again after needing frequency conversion to reduce;
The processing mode of described up direction is:
The multichannel communication signal that described far-end capping unit will receive from mimo antenna, conjunction road is carried out respectively with the CATV signal transmitted in CATV cable, if when the frequency of signal of communication drops in the frequency range shared by CATV signal, frequency-variable module in far-end capping unit carries out conjunction road with CATV signal after then needing first signal of communication to be converted to a certain idle frequency range again, closes the signal behind road by CATV cable co-cable transmission to near-end combiner unit; The signal received is carried out shunt and forwards by near-end combiner unit, and CATV signal is wherein returned by original CATV cable, and multichannel communication signal then transfers to near-end small base station group; Near-end small base station group is transferred to the core net of operator after being processed by the multichannel communication signal received, if these multichannel communication signals have through frequency-conversion processing in far-end capping unit, first frequency-variable module then in near-end small base station group can be distinguished frequency conversion reduction, then carries out processing, transmitting.
In an embodiment of the present invention, described near-end small base station group is connected with the core net of operator by broadband backhaul mode.
In an embodiment of the present invention, the frequency range of described CATV signal is 5-860MHz.
In an embodiment of the present invention, described idle frequency range is that frequency is higher than 860MHz and not afoul with described communication signal frequency band available frequency band.
In an embodiment of the present invention, one trapper is set before described CATV power splitter, for the signal outside filtering CATV frequency range.
Beneficial effect of the present invention is exactly, by by the signal of small base station and original CATV cable altogether cable register one's residence and to transmit and the high-quality that mimo antenna group can also be used to carry out signal covers, not only widen the application scenarios of small base station, and meet the growth requirement of following LTE communication.Therefore, the present invention has certain creativeness, practicality and perspective.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention.
Fig. 2 is that the internal main of near-end small base station group of the present invention wants module map.
Fig. 3 is the down direction schematic flow sheet of method of the present invention.
Fig. 4 is the up direction schematic flow sheet of method of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
The present embodiment provides a kind of system adopting co-cable transmission and MIMO to carry out quorum sensing inhibitor, it is characterized in that: comprise a near-end small base station group, described near-end small base station group one end is connected with Operator Core Network, the other end has a plurality of signal transmitting and receiving port, supports the signal of communication of MIMO networking in order to transmitting-receiving; A plurality of near-end combiner unit, the CATV signal that the CATV power splitter for receiving CATV bus exports and the signal of communication that described near-end small base station group is supported close road; A plurality of far-end capping unit, described near-end combiner unit CATV cable of respectively hanging oneself is connected with each self-corresponding described far-end capping unit; This far-end capping unit by the CATV signal that receives by CATV cable transmission to TV, described signal of communication exports to mimo antenna.
Concrete, refer to Fig. 1 and Fig. 2, in figure, the present embodiment system comprises a kind of small base station system adopting co-cable transmission and MIMO technology to carry out quorum sensing inhibitor, it comprises near-end small base station group, near-end combiner unit and far-end capping unit: wherein, near-end small base station group, is made up of small base station protocol process module, MIMO processing module etc.Its one end is connected with the core net of operator by modes such as broadband backhaul, and the other end has multiple signal transmitting and receiving port, for receiving and dispatching the signal of communication can supporting MIMO networking.MIMO processing module is with frequency conversion function, if when the signal frequency of the communication standard supported drops in the frequency range shared by CATV signal, MIMO processing module is received and dispatched after signal of communication can being converted to a certain idle frequency range again.Near-end combiner unit, for the signal of communication near-end small base station group supported and CATV television signal combining, then carries out co-cable transmission by CATV cable; Or, for distally capping unit transmission Lai He road signal is carried out shunt forwarding.Far-end capping unit, for conjunction road signal that proximally combiner unit is transmitted along separate routes, wherein CATV signal passes through CATV cable transmission to TV, residue signal of communication exports to mimo antenna, if signal of communication has through frequency-conversion processing in near-end small base station group, then export to mimo antenna again after needing frequency conversion to reduce; Or, for the signal of communication received from mimo antenna termination and the CATV signal transmitted from CATV cable are carried out conjunction road, if signal of communication drops in the frequency range of CATV, then close road with CATV signal again after needing first to be converted to idle frequency range by frequency-variable module.Last conjunction road signal carries out common cable passback by CATV cable.
In addition, before the power splitter of CATV bus, a trapper is installed, for the signal outside filtering CATV frequency range, realizes reducing mobile communication signal further to the effect of original CATV line influence.
In addition, the present embodiment also provides a kind of network-building method adopting co-cable transmission and MIMO to carry out quorum sensing inhibitor, it is characterized in that: comprise down direction and up direction;
The processing mode of described down direction is:
There is provided a near-end small base station group, one end of this this near-end small base station group connects the core net of operator, and the other end exports the multiple signals supporting mimo antenna networking; If when the communication signal frequency supported drops in the frequency range shared by CATV signal, the MIMO processing module in near-end small base station group exports after then needing first signal of communication to be converted to a certain idle frequency range again; The CATV signal that the multichannel communication signal that near-end small base station group exports exports with CATV power splitter is respectively carried out conjunction road by multiple near-end combiner unit, then will close road Signal transmissions to corresponding far-end capping unit by CATV cable; The signal received is carried out shunt by this far-end capping unit, wherein CATV signal passes through CATV cable transmission to TV, described multichannel communication signal then exports to mimo antenna respectively, if signal of communication has through frequency-conversion processing in near-end small base station group, then export to mimo antenna again after needing frequency conversion to reduce;
The processing mode of described up direction is:
The multichannel communication signal that described far-end capping unit will receive from mimo antenna, conjunction road is carried out respectively with the CATV signal transmitted in CATV cable, if when the frequency of signal of communication drops in the frequency range shared by CATV signal, frequency-variable module in far-end capping unit carries out conjunction road with CATV signal after then needing first signal of communication to be converted to a certain idle frequency range again, closes the signal behind road by CATV cable co-cable transmission to near-end combiner unit; The signal received is carried out shunt and forwards by near-end combiner unit, and CATV signal is wherein returned by original CATV cable, and multichannel communication signal then transfers to near-end small base station group; Near-end small base station group is transferred to the core net of operator after being processed by the multichannel communication signal received, if these multichannel communication signals have through frequency-conversion processing in far-end capping unit, first frequency-variable module then in near-end small base station group can be distinguished frequency conversion reduction, then carries out processing, transmitting.
The frequency range of above-mentioned CATV signal is 5-860MHz.
Above-mentioned idle frequency range be frequency higher than 860MHz and not with the afoul available frequency band of other communication standard signal frequency range.
Please continue see referring to figs. 1 to Fig. 4, in this implementation process, for LTE communication signal.
System configuration as shown in Figure 1, comprises near-end small base station group, near-end combiner unit and far-end capping unit; Wherein, near-end small base station group, is made up of the protocol process module and MIMO processing module etc. of LTE standard, as shown in Figure 2.Its one end is connected with the core net of operator by modes such as broadband backhaul, and the other end has multiple signal transmitting and receiving port, for receiving and dispatching the signal of communication can supporting MIMO networking.The frequency range used due to LTE standard is not overlapping with CATV signal frequency range, therefore does not need to adopt the method for frequency-conversion processing, can directly and near-end combiner unit receive and dispatch multichannel LTE signal.
Near-end combiner unit, for the LTE communication signal that near-end small base station group sent and CATV television signal combining, then carries out co-cable transmission by CATV cable; Or, for distally capping unit transmission Lai He road signal is carried out shunt forwarding.
Far-end capping unit, for conjunction road signal that proximally combiner unit is transmitted along separate routes, wherein CATV signal passes through CATV cable transmission to TV, remaining LTE communication signal directly exports to mimo antenna, according to the difference of application scenarios, aerial position, centralized MIMO networking mode or distributed MIMO networking mode can be adopted; Or for the LTE communication signal received from mimo antenna termination and the CATV signal transmitted from CATV cable are carried out conjunction road, last conjunction road signal carries out common cable passback by CATV cable.
The present invention also provides a kind of small base station network-building method adopting co-cable transmission and MIMO technology to carry out quorum sensing inhibitor, no matter whether the signal frequency that the method can realize the communication standard that small base station group is supported drops in frequency range shared by CATV signal, existing CATV cable can be utilized to realize the signal co-cable transmission of small base station group, and the high-speed high-quality amount can carrying out signal at far-end by the mimo antenna of multiple far-end capping unit accurately cover.
Further, as shown in Figure 3, down direction the method comprises:
To support the small base station of LTE standard.One end of near-end small base station group is connected with the core net of operator by modes such as broadband backhaul, and the other end exports the multichannel LTE signal supporting mimo antenna networking.The frequency range used due to LTE standard is not overlapping with CATV signal frequency range, therefore does not need the method adopting frequency-conversion processing, directly multichannel LTE signal can be issued several near-end combiner units respectively; The multichannel LTE signal that near-end small base station group exports is carried out conjunction road with CATV signal by multiple near-end combiner unit respectively, then will close road Signal transmissions to far-end capping unit by CATV cable; The signal received is carried out shunt by multiple far-end capping unit respectively, wherein CATV signal passes through CATV cable transmission to TV, remaining multichannel LTE signal then exports to mimo antenna respectively, if signal of communication has through frequency-conversion processing in near-end small base station group, mimo antenna is exported to again after then needing frequency conversion to reduce, according to the difference of application scenarios, aerial position, centralized MIMO networking mode or distributed MIMO networking mode can be adopted.
Further, as shown in Figure 4, up direction the method comprises:
The multichannel LTE signal that far-end capping unit will receive from mimo antenna, conjunction road is carried out respectively with the CATV signal transmitted in CATV cable, the frequency range used due to LTE standard is not overlapping with CATV signal frequency range, therefore do not need the method adopting frequency-conversion processing, close the signal behind road by CATV cable co-cable transmission to near-end combiner unit; The signal received is carried out shunt and forwards by near-end combiner unit, and CATV signal is wherein returned by original CATV cable, and multichannel LTE signal then transfers to near-end small base station group; Be transferred to the core net of operator by broadband backhaul after the multichannel LTE signal received processes by near-end small base station group.
The present invention is not limited to above-mentioned execution mode, and anyone can show that under enlightenment of the present invention other various forms of employing co-cable transmissions and MIMO technology carry out small base station system and the network-building method of quorum sensing inhibitor.All equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.