CN105284060A - Distributed antenna system, radio-frequency power control method and base station device - Google Patents
Distributed antenna system, radio-frequency power control method and base station device Download PDFInfo
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- CN105284060A CN105284060A CN201380077475.4A CN201380077475A CN105284060A CN 105284060 A CN105284060 A CN 105284060A CN 201380077475 A CN201380077475 A CN 201380077475A CN 105284060 A CN105284060 A CN 105284060A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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Abstract
The present invention relates to a distributed antenna system, a radio-frequency power control method and a base station device. According to one embodiment of the present invention, provided is a distributed antenna system (100), comprising: a plurality of antennas (11-18); a radio-frequency module (20); a radio-frequency signal transmission network (30) which is configured to transmit electrical signals from the radio-frequency module to the plurality of antennas, the radio-frequency signal transmission network comprising at least one adjustable coupler (31-37); and a first controller (40) which is communicatively connected to the radio-frequency signal transmission network and is configured to control the at least one adjustable coupler, so as to control the radio-frequency power of the plurality of antennas. The system realizes antenna-based power saving under the distributed antenna system, has relatively fine granularity control, and has no influence on the service quality and the user experience.
Description
Distributing antenna system, radio frequency power control method and base station equipment technical field
The present invention relates generally to communication or network technology, more particularly, to distributing antenna system.
Distributing antenna system（Distributed Antenna System, DAS) it is widely used in indoor radio signal covering.In typical distributing antenna system, the multiple antennas for being connected to a base station equipment are arranged at different location in building in a distributed manner, and pass through coaxial cable, directional coupler（Coupler), shunt（Splitter) I power dividers（Power divider) it is connected to base station equipment.Downlink radio-frequency signal is distributed to each antenna from base station equipment, and the upward signal come user terminal received by each antenna feeds back to base station equipment after being merged in systems.
Indoor environment is to the demand of wireless traffic load generally as the purposes in room is different and the period is different and significant changes.For example, the room as kinds of goods storehouse is very low to the demand of service load, and the demand for receiving hall or meeting room to service load is higher.And for example, office be on duty the time service load it is higher, it is and relatively low in the service load of quitting time.Existing distributing antenna system one is arranged, and the power output of each antenna is to be fixed up, it is impossible to change according to demand and adjust.The content of the invention
A primary object of the present invention is to provide new distributing antenna system and can overcome drawbacks described above of the prior art.
According to one embodiment of present invention there is provided a kind of distributing antenna system, including：Multiple antennas；Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；First controller, it is communicatively connected to the radio signal transmission network, and is configured as at least one described variable coupler of control to adjust the radio-frequency power of the multiple antenna.
In one embodiment, the distributing antenna system also includes second controller, and it is configured as：Determine practical business load, expected service load or the QoS requirement of the multiple antenna；The radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement；With
And the radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.
In one embodiment, the first controller in the distributing antenna system is configured as radio-frequency power that the multiple antenna according to determined by the second controller each needs come at least one variable coupler described in controlling.
In one embodiment, at least one described variable coupler in the distributing antenna system includes circulator and adjustable matching network.More specifically, the circulator includes first port, second port and the 3rd port, the adjustable matching network is coupled to the second port and is configured as adjusting match parameter according to the control signal of first controller.
In one embodiment, at least one described variable coupler in the distributing antenna system includes the directional coupler for including adjustable coupling part.
In one embodiment, special control network connection is used between first controller and radio signal transmission network in the distributing antenna system.Special control network used includes, but not limited to, e.g. C-BUS fieldbus networks or CAN-BUS fieldbus networks.
There is provided a kind of method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas according to another embodiment of the invention.The distributing antenna system also includes：Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler.Methods described includes：Determine practical business load, expected service load or the QoS requirement of the multiple antenna；The radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement；And the radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.
In one embodiment, the step of radio-frequency power that the multiple antenna each needs is determined in this method includes：The radio-frequency power that one antenna needs is defined as meeting to the relatively low or minimum radio-frequency power of the individual event demand or mixing demand in its actual service load, expected service load or QoS requirement.
In one embodiment, the step of radio-frequency power that the multiple antenna each needs is determined in this method includes：When the practical business load or expected service load of antenna are zero, the radio-frequency power needed is defined as meeting the relatively low or minimum radio-frequency power of requirement for signal coverage.
According to still another embodiment of the invention there is provided a kind of method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas, the distributing antenna system also includes：Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；Methods described includes：Determine the radio-frequency power that the multiple antenna each needs；Total radio frequency power, the topological structure of the radio signal transmission network needed for the radio-frequency power that is each needed according to the multiple antenna, radio-frequency module, it is determined that the coupling ratio that at least one described variable coupler needs；And according at least one described variable coupler
The coupling ratio needed is to send control signal to adjust at least one described variable coupler.
It is used to include the base station equipment of the distributing antenna system of multiple antennas there is provided a kind of according to still a further embodiment.The distributing antenna system also includes：Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler.The base station equipment includes radio-frequency module, and is configured as：Determine practical business load, expected service load or the QoS requirement of the multiple antenna；The radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement；And the radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.
In one embodiment, the base station equipment is additionally configured to：The radio-frequency power that one antenna needs is defined as meeting to the relatively low or minimum radio-frequency power of the individual event demand or mixing demand in its actual service load, expected service load or QoS requirement.
In one embodiment, the base station equipment is additionally configured to：When the practical business load or expected service load of antenna are zero, the radio-frequency power needed is defined as meeting the relatively low or minimum radio-frequency power of requirement for signal coverage.
It is used to include the base station equipment of the distributing antenna system of multiple antennas there is provided a kind of according to another embodiment of the present invention.The distributing antenna system also includes：Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler.The base station equipment includes radio-frequency module, and is configured as：Determine the radio-frequency power that the multiple antenna each needs；Total radio frequency power, the topological structure of the radio signal transmission network needed for the radio-frequency power that is each needed according to the multiple antenna, radio-frequency module, it is determined that the coupling ratio that at least one described variable coupler needs；And the coupling ratio needed according at least one described variable coupler to send control signal to adjust at least one described variable coupler.
At least part in above-described embodiment realizes the power based on antenna under distributing antenna system and saved, and with more fine control granularity, and do not interfere with service quality and Consumer's Experience.
Foregoing has outlined the technical characteristic of the present invention and advantage to cause the detailed description below the present invention to be more readily understood.Other features and advantages of the present invention will be described below, and which form the claimed subject matter of the present invention.Those skilled in the art, which will be understood that disclosed concept and embodiment can be easily used as changing or design, other to be used to realize the structures with identical purpose of the present invention or the bases of flow.It should also be understood by those skilled in the art that spirit and scope of such equivalent constructions without departing from appended claims.Brief description of the drawings
With reference to accompanying drawing, the detailed description below in relation to the preferred embodiments of the present invention will become apparent to.The present invention is explained by way of example, is not limited to reference similar in accompanying drawing, accompanying drawing and is indicated similar element.
Fig. 1 shows the configuration schematic diagram of distributing antenna system according to an embodiment of the invention；Fig. 2 shows the service load demand scene in distributing antenna system according to an embodiment of the invention；Fig. 3 shows the structural representation of variable coupler according to an embodiment of the invention；
Fig. 4 shows the structural representation of variable coupler according to another embodiment of the invention；
Fig. 5 shows the flow chart of the method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas according to one embodiment；
Fig. 6 shows the flow chart of the method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas according to one embodiment.Embodiment
The detailed description of accompanying drawing is intended to the explanation as currently preferred embodiment of the invention, and is not intended to represent the only form that the present invention can be achieved.It should be understood that identical or equivalent function can be completed by being intended to be contained in the not be the same as Example within the spirit and scope of the present invention.
Those skilled in the art will be understood that means described herein and function can use the software function with reference to programmable microprocessor and all-purpose computer to realize, and/or use ASIC（ASIC) realize, and/or the particular electrical circuit that is built using discrete component is realized.It is also to be understood that, although the present invention is mainly illustrated in the form of method and apparatus, the present invention can also be embodied as computer program product and the system comprising computer processor He the memory for being connected to processor, and wherein memory is encoded with the one or more programs for the function that can complete to disclose herein.
Fig. 1 shows the configuration schematic diagram of distributing antenna system 100 according to an embodiment of the invention.As illustrated, distributing antenna system 100 includes：Radio-frequency module 20, the first controller 40, radio signal transmission network 30 and antenna 11-18.
Distributing antenna system 100 generally includes a base station equipment, and radio-frequency module 20 is a part for the base station equipment, for producing radiofrequency signal.Those skilled in the art will be understood that, node B (Node B) or evolution node B (evolved Node B that base station or base station equipment referred to herein is such as, but not limited in LTE system or lte-a system, eNB), technical scheme is also not necessarily limited to be applicable LTE system or lte-a system.The remote radio-frequency heads (RemoteRadioHead, RRH) that radio-frequency module 20 is such as, but not limited in lte-a system.
Antenna 11-18 uses distributed arrangement.Such as, but not limited to, antenna 11 and 12 is arranged at floor 1, and antenna 13 and 14 is arranged at floor 2, and antenna 15 and 16 is arranged at floor 3, and antenna 17 and 18 is arranged at floor 4.
Radio signal transmission network 30 includes variable coupler 31-37.Radio signal transmission network 30 is configured as transmitting electric signal from radio frequency unit to antenna 11-18.Each antenna 11-18 is connected to radio-frequency module 20 via radio signal transmission network 30.Chain-dotted line line segment in figure represent radio-frequency module 20, radio signal transmission network 30, antenna 11-18 it
Between wired connection.Variable coupler generally includes signal input part, straight-through end, coupled end, control end, receives control signal by control end and adjusts straight-through end, the coupling ratio of coupled end or signal allotment ratio.Preferably, variable coupler can provide electrodeless, continuous coupling ratio or the regulation of signal allotment ratio, that is, result in any coupling ratio or signal allotment ratio in the range of no-load voltage ratio.
First controller 40 is communicatively connected to radio signal transmission network 30, and is configured as controlling variable coupler 31-37 adjusting antenna 11-18 radio-frequency power.Real segment represents the communication connection between the first controller 40 and radio signal transmission network 30 in figure, these communication connections can use special control network connection, the fieldbus such as such as, but not limited to C-BUS or CAN-BUS (Controller Area Network-BUS).C-BUS or CAN-BUS fieldbus is widely used in building automation network, technology maturation and cost is more advantageous.
First controller 40 can be integrated in base station equipment, can be from independent external equipment.When the first controller comes from independent external equipment, OAM (Operation can also be passed through between the external equipment and base station equipment, Administration ＆ Maintenance) interface is communicatively coupled, to transmit data-signal and control signal.
Fig. 2 shows the service load demand scene in distributing antenna system according to an embodiment of the invention.Distributing antenna system 200 shown in figure includes radio-frequency module 20, the first controller 40, second controller 42, radio signal transmission network 30, antenna 11-14.For concise meter, radio signal transmission network 30 is reduced to a square frame.The 1-14 of antenna 1 is respectively arranged in room A, B, C, D.The downlink radio-frequency signal transmission of Self Adaptive Control is different from uplink receiving signal transmission demand, can transmit uplink and downlink signals respectively using independent coupling network.
The service load demand in each room may be different.Occur occurring two individual mobile terminals in four individual mobile terminals, room C in three office equipment for needing wireless data to connect, room B for example, being arranged in room A, and the equipment of wireless connection is not needed in room D.
Second controller 42 is configured as：Determine antenna 11-14 practical business load, expected service load or QoS requirement；The radio-frequency power that the 1-14 of antenna 1 each needs is determined according to antenna 11-14 practical business load, expected service load or QoS requirement；And the radio-frequency power each needed according to antenna 11-14 adjusts the total radio frequency power of radio-frequency module 20.Generally, second controller 42 can with radio-frequency module 20-rise be integrated in base station equipment.
Practical business load represents currently to have received the service load of the services such as voice, data by the user equipment of certain antenna access base station equipment.In other words, practical business load represents the service load of current active user equipment.It is expected that service load represent Roaming Registration, by certain antenna and base station equipment be in can connection status possible service load.In other words, it is contemplated that service load represents current active user equipment and all possible service load of standby subscriber equipment.For example, four user equipmenies occurs in room B, only one of which receives service, and room C two user equipmenies occurs and receiving service, then the expection service load of antenna 12 is higher than antenna 13, and the practical business of antenna 13 is carried
Lotus is higher than antenna 12.Antenna（It is actual, expected）Service load is higher, and the radio-frequency power that it needs is also higher.Different types of business can set different service quality ratings, and different service quality ratings can also be set even if the business of same type, and user can select the service quality paid more expense and enjoy greater degree.Usual QoS requirement it is higher, it is necessary to radio-frequency power it is also higher.For the purpose of energy-conservation, even the radio-frequency power that each antenna needs could be arranged to meet practical business load requirements, meet expected service load demand or meet the relatively low minimum radio-frequency power of QoS requirement, even or it can also be provided that meet the relatively low minimum radio-frequency power of foregoing every mixing demand.Specifically, it can be that individual event demand or mixing demand divide different ranks, and corresponding radio-frequency power is set for each rank, which rank is the demand of antenna be in, then the radio-frequency power needed mutually should determine that.When it is zero that the practical business load of a certain antenna, which is zero or expected service load, for the purpose of energy-conservation, even the radio-frequency power that the antenna needs could be arranged to meet the relatively low minimum radio-frequency power of requirement for signal coverage.By taking the situation of antenna 14 in room D in Fig. 2 as an example, even its radio-frequency power needed could be arranged to meet the relatively low minimum radio-frequency power of the requirement for signal coverage in room D.Total radio frequency power needed for radio-frequency module 20 shown in Fig. 2 is the radio-frequency power sum that each antenna needs, and generally should also be included in signal transmission path loss balancing.
Radio signal transmission network 30 includes being similar to the variable coupler shown in Fig. 1.First controller 40 is configured as radio-frequency power that multiple antennas according to determined by second controller 42 each need to control the variable coupler in radio signal transmission network 30.The topological structure of each coupling element in radio signal transmission network 30 predefines, and is typically the bifurcated tree of first coupler being directly connected to using radio-frequency module 20 as root node.The radio-frequency power that given such topological structure and each antenna need, then can correspondingly determine the coupling ratio or power distribution ratio of each coupling element.Coupling ratio or power distribution ratio of first controller 40 according to needed for each coupling element of such as variable coupler send corresponding control signal to each coupling element.
In certain embodiments, the first controller 40 and second controller 42 are integrated in same base station equipment, or even both are exactly same controller.In further embodiments, at least one in the first controller 40 and second controller 42 is integrated in the separate outer equipment outside base station equipment.
Fig. 3 shows the structural representation of variable coupler 300 according to an embodiment of the invention.As illustrated, structure of the variable coupler 300 using directional coupler, including main coupling 301, secondary coupling 302 and adjustable coupling part 309.Input 303 and straight-through end 304 are located at the main two ends of coupling 301 respectively.Coupled end 305 and isolation end 306 are located at the secondary two ends of coupling 302 respectively.Adjustable coupling part 309 can receive the automatically controlled signal from the first controller 40 and gradual change adjust coupling parameter between main coupling 301 and secondary coupling 302 so that straight-through end 304 and coupled end 305 meet required coupling ratio or power distribution ratio.Compared to traditional directional coupler, variable coupler 300 is an active device.Port 303 is as the input of variable coupler 300, and port 304 and 305 is used as two output ends.
Fig. 4 shows the structural representation of variable coupler 320 according to another embodiment of the invention.As illustrated,
Variable coupler 320 includes circulator（Circulator) 321 and adjustable matching network 322.Circulator 321 has three ports 323,324 and 326, and in the case of not extra electric field, the incidence wave into its either port will be according to the sequentially incoming next port of arrow direction.Port 323 is as the input port of variable coupler 320, and port 326 and 325 is used as two output ports.Adjustable matching network 322 is configured to that in such as, but not limited to T-shaped, L-type, π type matching networks, the matching network automatically controlled adjustable condenser or variable inductor can be included, but not limited to, e.g..Adjustable matching network 322 can receive the automatically controlled signal from the first controller 40 and gradual change adjust match parameter, change the echo reflection ratio to the incidence wave of the port 324 from circulator 321.The echo reflection of matching network 322 will be incident in the port 324 of circulator and from the outgoing of port 326.Therefore, the coupling ratio or power distribution ratio between output port 325 and 326 are adjusted with being able to gradual change.Variable coupler 320 is also an active device.
Fig. 5 shows the flow chart of the method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas according to one embodiment.The distributing antenna system also includes：Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler.As illustrated, this method 500 includes step 501,502 and 503.In step 501, practical business load, expected service load or the QoS requirement of the multiple antenna are determined.In step 502, the radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement.In step 503, the radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.The total radio frequency power of radio-frequency module is the radio-frequency power sum that each antenna each needs, generally also it is accrued enter radio frequency signal transmission network signal transmission path loss.In one embodiment, step 502 includes：The radio-frequency power that one antenna needs is defined as meeting to the relatively low or minimum radio-frequency power of the individual event demand or mixing demand in its actual service load, expected service load or QoS requirement.In another embodiment, step 502 includes：When the practical business load or expected service load of antenna are zero, the radio-frequency power needed is defined as meeting the relatively low or minimum radio-frequency power of requirement for signal coverage.A kind of specific implementation of method 500 is described in detail with reference to embodiment illustrated in fig. 2 above, will not be repeated here.
Correspondingly, distributing antenna system includes the base station equipment with radio-frequency module, and it is configured to implementation 500.Fig. 6 shows the flow chart of the method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas according to one embodiment.The distributing antenna system also includes：Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler.As illustrated, this method 600 includes step 601,602 and 603.In step 601, the radio-frequency power that the multiple antenna each needs is determined.In step 602, total radio frequency power, the topological structure of the radio signal transmission network needed for the radio-frequency power that is each needed according to the multiple antenna, radio-frequency module, it is determined that the coupling ratio that at least one described variable coupler needs.In step 603, the coupling needed according at least one described variable coupler
Composition and division in a proportion rate is to send control signal to adjust at least one described variable coupler.A kind of specific implementation of side 600 is described in detail with reference to embodiment illustrated in fig. 2 above, will not be repeated here.
Correspondingly, distributing antenna system includes the base station equipment with radio-frequency module, and it is configured to implementation 600.Although having illustrated and having described different embodiments of the invention, the present invention is not limited to these embodiments.Ordinal numbers such as " first ", " second " that occurs in claim functions only as the effect of difference, and is not meant to there is any specific order or annexation between corresponding component.The technical characteristic only occurred in some claims or embodiment is also not meant to be combined with other features in other claims or embodiment to realize beneficial new technical scheme.It is many to change, change, deforming, substituting and equally will be apparent to those skilled in the art in the case of without departing substantially from the spirit and scope of the present invention as described by claims.
Claims (16)
- Claims1. a kind of distributing antenna system, including：Multiple antennas；Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；First controller, it is communicatively connected to the radio signal transmission network, and is configured as at least one described variable coupler of control to adjust the radio-frequency power of the multiple antenna.2. distributing antenna system as claimed in claim 1, it is characterised in that the distributing antenna system also includes second controller, and it is configured as：Determine practical business load, expected service load or the QoS requirement of the multiple antenna；The radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement；AndThe radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.3. distributing antenna system as claimed in claim 2, it is characterised in that first controller is configured as radio-frequency power that the multiple antenna according to determined by the second controller each needs come at least one variable coupler described in controlling.4. distributing antenna system as claimed any one in claims 1 to 3, it is characterised in that at least one described variable coupler includes circulator and adjustable matching network.5. distributing antenna system as claimed in claim 4, it is characterized in that, the circulator includes first port, second port and the 3rd port, and the adjustable matching network is coupled to the second port and is configured as adjusting match parameter according to the control signal of first controller.6. distributing antenna system as claimed any one in claims 1 to 3, it is characterised in that at least one described variable coupler includes the directional coupler for including adjustable coupling part.7. distributing antenna system as claimed any one in claims 1 to 3, it is characterised in that special control network connection is used between first controller and radio signal transmission network.8. distributing antenna system as claimed in claim 7, it is characterised in that the special control network includes C-BUS fieldbus networks or CAN-BUS fieldbus networks.9. a kind of method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas, the distributing antenna system also includes：Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；Methods described includes：Determine practical business load, expected service load or the QoS requirement of the multiple antenna；The radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement；AndThe radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.10. method as claimed in claim 9, it is characterised in that the step of determining the radio-frequency power that the multiple antenna each needs includes：The radio-frequency power that one antenna needs is defined as meeting to the relatively low or minimum radio-frequency power of the individual event demand or mixing demand in its actual service load, expected service load or QoS requirement.11. method as claimed in claim 9, it is characterised in that the step of determining the radio-frequency power that the multiple antenna each needs includes：When the practical business load or expected service load of antenna are zero, the radio-frequency power needed is defined as meeting the relatively low or minimum radio-frequency power of requirement for signal coverage.12. a kind of method for the radio-frequency power adjustment for being used to include the distributing antenna system of multiple antennas, the distributing antenna system also includes：Radio-frequency module；Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；Methods described includes： Determine the radio-frequency power that the multiple antenna each needs；Total radio frequency power, the topological structure of the radio signal transmission network needed for the radio-frequency power that is each needed according to the multiple antenna, radio-frequency module, it is determined that the coupling ratio that at least one described variable coupler needs；And the coupling ratio needed according at least one described variable coupler to send control signal to adjust at least one described variable coupler.13. a kind of be used to include the base station equipment of the distributing antenna system of multiple antennas, the distributing antenna system also includes：Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；The base station equipment includes radio-frequency module, and is configured as：Determine practical business load, expected service load or the QoS requirement of the multiple antenna；The radio-frequency power that the multiple antenna each needs is determined according to the practical business load of the multiple antenna, expected service load or QoS requirement；AndThe radio-frequency power each needed according to the multiple antenna adjusts the total radio frequency power of the radio-frequency module.14. base station equipment as claimed in claim 13, it is characterised in that the base station equipment is additionally configured to：The radio-frequency power that one antenna needs is defined as meeting to the relatively low or minimum radio-frequency power of the individual event demand or mixing demand in its actual service load, expected service load or QoS requirement.15. base station equipment as claimed in claim 13, it is characterised in that the base station equipment is additionally configured to：When the practical business load or expected service load of antenna are zero, the radio-frequency power needed is defined as meeting the relatively low or minimum radio-frequency power of requirement for signal coverage.16. a kind of be used to include the base station equipment of the distributing antenna system of multiple antennas, the distributing antenna system also includes：Radio signal transmission network, is configured as transmitting electric signal from the radio-frequency module to the multiple antenna, the radio signal transmission network includes at least one variable coupler；The base station equipment includes radio-frequency module, and is configured as：Determine the radio-frequency power that the multiple antenna each needs；Total radio frequency power, the topological structure of the radio signal transmission network needed for the radio-frequency power that is each needed according to the multiple antenna, radio-frequency module, it is determined that the coupling ratio that at least one described variable coupler needs；AndThe coupling ratio needed according at least one described variable coupler to send control signal with adjust it is described at least one Variable coupler.
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| PCT/CN2013/000966 WO2015024140A1 (en) | 2013-08-19 | 2013-08-19 | Distributed antenna system, radio-frequency power control method and base station device |
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| CN105284060A true CN105284060A (en) | 2016-01-27 |
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| GB2535516A (en) * | 2015-02-19 | 2016-08-24 | Kathrein Werke Kg | Device and method for reduction in power in transmission signals |
| EP3963740B1 (en) * | 2019-04-30 | 2023-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Coordinating control of average eirp of multiple radio transmitters |
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- 2013-08-19 WO PCT/CN2013/000966 patent/WO2015024140A1/en active Application Filing
- 2013-08-19 CN CN201380077475.4A patent/CN105284060A/en active Pending
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| CN101542928A (en) * | 2006-08-29 | 2009-09-23 | Lgc无线公司 | Distributed antenna communications system and methods of implementing thereof |
| CN102461283A (en) * | 2009-04-09 | 2012-05-16 | 瑞典爱立信有限公司 | Splitter with adaptive power distribution |
| CN102487545A (en) * | 2010-12-03 | 2012-06-06 | 株式会社日立制作所 | Wireless base station for controlling antenna transmission power |
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| WO2015024140A1 (en) | 2015-02-26 |
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