CN100514883C - Radio signal zone covering method and radio cut-in network - Google Patents
Radio signal zone covering method and radio cut-in network Download PDFInfo
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- CN100514883C CN100514883C CNB2005100678792A CN200510067879A CN100514883C CN 100514883 C CN100514883 C CN 100514883C CN B2005100678792 A CNB2005100678792 A CN B2005100678792A CN 200510067879 A CN200510067879 A CN 200510067879A CN 100514883 C CN100514883 C CN 100514883C
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Abstract
This invention discloses a region covery method of radio signals and a radio access network for realizing it including: a base station emits down-radio signals on a set frequency point outside of the band occupied by said radio network and receives the up-radio signals, a playover station receives the down radio signals of the base station to convert the working frequency point of said radio signals to the inside of the band of the radio network and emits to receive said up radio signals in the band occupied by the network of the terminal and converts them to said set frequency point and emits them, thus, the radio signals transmitted between the base station and the playover station work on said set frequency point and said network includes a base station working on set frequency point and a playover station for frequency transformation.
Description
Technical field
The present invention relates to wireless communication technology, relate in particular to the soverlay technique of Radio Access Network, disclose a kind of area coverage method of wireless signal and the Radio Access Network of this method of realization.
Background technology
Mobile operator is by 3-G (Generation Three mobile communication system) (3G at present, The Third Generation) when broadband services is provided, a difficulty that faces is exactly indoor covering problem, usually utilize the method for outdoor base station covering indoor scene very difficult and complicated on technology realizes, indoor suitable wireless signal, the realization indoor wireless broadband services of providing can not well be provided.For addressing this problem, generally adopt at present in the indoor scheme of setting up transmission unit or setting up repeater quantity, concrete grammar comprises following four kinds:
Method one is that the base station is built near the building that needs indoor covering, and arranges that in building a plurality of domestic aerials realize indoor covering.This method need be installed feeder line and antenna (perhaps replacing antenna with leaky cable) in building, and for the increase capacity adopts a plurality of carrier frequency, thereby increased the complexity of the network planning.
Method two is to realize indoor covering by the method at the micromicro honeycomb base station of a plurality of dispersion settings of indoor installation, the problem that this method mainly exists is that the transmission between Pico cell and the network is very difficult, and need adopt a plurality of carrier frequency with method one the same increase capacity, equally also increase the complexity of the network planning.
Method three is to realize indoor covering by the method in the repeater of a plurality of dispersion settings of indoor installation, in this method, indoor repeater remains the frequency of utilizing outdoor existence, for avoiding that outdoor signal is produced interference, the power of repeater can not be too big, and the loss that brings indoor covering capacity thus is identical with preceding two kinds of methods, also exist the increase capacity need adopt a plurality of carrier frequency, increase the defective of network planning complexity.
Method four is to pass through frequency-shift repeater, used working frequency points in base station and the frequency band that is installed between the indoor repeater working frequency points are moved conversion, as shown in Figure 1, the F0 frequency signal that near the frequency-shift repeater that is provided with the base station sends the base station shifts to F1 frequency signal and sends, be arranged on and be reduced to the emission of F0 frequency signal after the interior frequency-shift repeater of building receives F1 frequency signal, receive for indoor receiving terminal.The advantage that this method is compared with first three methods is the signal of indoor reception in outdoor transmittance process, and the frequency of the signal of indoor and outdoor reception is different, has reduced the interference of indoor signal to outdoor signal to a certain extent.
But in method four, the repeater is nearer apart from donor base station, and the upstream noise of repeater is introduced donor base station, thereby reduces the receiving sensitivity of donor base station receiver, has reduced the coverage of donor base station, even has caused the rising of the cutting off rate and the error rate.Because signal between base station and near the repeater is the frequency range that is operated in the 3G system, base station signal has been produced very big interference, therefore near the repeater that is provided with the base station is not used on a large scale, especially the application in code division multiple access (CDMA, Code Division MultipleAccess) system still less.And, the once frequency conversion of transmitting-receiving of once frequency conversion of the transmitting-receiving of near-end machine, remote termination in this method, double conversion conversion deterioration signal quality, can't reach good coverage effect indoor, though can improve signal quality by the power output that improves the repeater usually, but this method can not be used the digital power amplifier technology, concerning analogue technique, power can produce bigger interference when improving, thereby can not improve signal quality and reduce the operating cost of base station by improving radio frequency power output.
In above-mentioned four kinds of existing solutions, all require operator's erection unit in the building that is capped, increased the cost of the indoor covering of operator greatly.
Summary of the invention
The invention discloses a kind of area coverage method of Radio Access Network signal and the Radio Access Network of this method of realization,, regional external signal is disturbed big, covering cost problem of higher in order to solve the existing wireless access network network when carrying out the zone covering.
The area coverage method of a kind of wireless signal of the present invention comprises the steps:
Transmitting downstream wireless signal on the frequency is set at one beyond the frequency range that described Radio Access Network takies in the base station, and described downstream wireless signals is transmitted on described setting frequency;
Repeater in the described zone receives the described downstream wireless signals of base station, and the working frequency points of this downstream wireless signals is transformed into frequency range that described Radio Access Network takies with interior and emission.
Described method also comprises step: the terminal of described Radio Access Network receives described downstream wireless signals in described zone.
Described method also comprises the steps:
The repeater receives the up-link wireless signal that described terminal is launched in the frequency range that described Radio Access Network takies, this up-link wireless conversion of signals is also launched to described setting frequency, and this up-link wireless signal is transmitted on described setting frequency;
The base station receives described up-link wireless signal on described setting frequency.
Described Radio Access Network is a wireless broadband network.
Described setting frequency is the 3.5GHz frequency.
The present invention also discloses a kind of Radio Access Network of realizing that the zone covers, comprising: base station controller, connect first base station of this base station controller and the repeater of this first base station of wireless connections by interface; Described repeater is arranged in described zone, launches after the working frequency points of reception wireless signal, the described wireless signal of conversion;
Described wireless signal comprises that described first base station beyond frequency range that described Radio Access Network takies sets the downstream wireless signals that is transmitted to described repeater on the frequency, and this downstream wireless signals is transformed into frequency range that described network takies with interior and be transmitted into described zone by described repeater.
Described wireless signal also comprises frequency range that described network that described repeater receives takies with interior up-link wireless signal from described zone, this up-link wireless signal is transformed on the described setting frequency by described repeater and is transmitted to described first base station and receives.
Described network also comprises second base station that connects described base station controller by interface, the frequency range that the frequency range that this second base station takies at described network takies with the described network of interior reception is with interior up-link wireless signal, or launches frequency range that described network takies with interior downstream wireless signals.
Described repeater comprises filter, frequency converter and the power amplifier that two covers connect in turn, respectively up-link wireless signal or downstream wireless signals is carried out filtering, working frequency points conversion and signal amplification.
Described network is a wireless wideband access network.
When the zone that is capped is big, with described repeater in described zone parallel be set to a plurality of.
Beneficial effect of the present invention is as follows:
1, the present invention utilizes wrong method frequently, the resource of frequency range that to not use is used for the zone and covers, neither need to take existing frequency spectrum resource, other signals are not produced again and disturb, during particularly in order to the indoor covering of realization in 3G network, existing 3G frequency spectrum resource is fully used, and can be used to support the Any user equipment of 3G;
2, compare with the shift frequency method, the method for the invention not be used in the base station annex repeater is set, and uses private base station instead and directly launch wireless signal on the frequency of wrong frequency range, has avoided the interference of repeater to the base station;
3, owing to the method for the invention is to adopt the repeater to realize the signal transmission, not be used in the area of coverage, web-transporting device for example is installed in the building, by contrast, the time that installation needs is short, operation is few, has therefore improved networking speed and efficient;
4, as long as after in the sub-district, setting up the base station that is operated on the frequency range that staggers with the network frequency range, the user just can install the repeater equipment of inversion frequency as required voluntarily and realize that the zone covers or the improvement zone covers quality of signals, needn't operator be installed by the equipment of oneself, reduce the installation and maintenance workload of operator to a certain extent, reduced the networking cost of operator;
5, owing to the repeater in the area of coverage is operated on the area of coverage signal frequency range in addition, can not cause interference to outdoor signal, compare with shift frequency of the prior art station mode, transmitting power can suitably strengthen, therefore can realize signal in the area of coverage and area of coverage external signal continuously, easily support terminal in the area of coverage and outside between switching when mobile.
Described area coverage method of this method and network, particularly suitable are realized the indoor covering in multiple spot zone simultaneously in the sub-district of groups of building than comparatively dense.
Description of drawings
Fig. 1 realizes in the tier building the wherein indoor covering schematic diagram of one deck for utilizing frequency-shift repeater in the prior art;
Fig. 2 is that the wherein principle schematic of the indoor covering of one deck is realized in the tier building in the wrong repeater frequently of utilization of the present invention;
Fig. 3 uses the networking structure schematic diagram that utilizes wrong frequency repeater to realize indoor covering of the present invention;
The wrong structural representation of repeater frequently of Fig. 4;
When Fig. 5 realizes indoor covering for the wrong repeater frequently of utilizations of the present invention, the schematic flow sheet of terminal access;
When Fig. 6 realizes indoor covering for the wrong frequency of utilizations of the present invention repeater, up-link wireless signal conveying flow schematic diagram;
When Fig. 7 realizes indoor covering for the wrong frequency of utilizations of the present invention repeater, downstream wireless signals conveying flow schematic diagram.
Embodiment
The wrong principle frequently of the method for the invention utilization is avoided the frequency spectrum resource that existing Radio Access Network uses, and the frequency inverted by the repeater reaches the purpose that the zone covers, and has reduced the interference to network.The method of the invention can be applied in all Radio Access Networks, if consider to build the cost of base station, described method of this method and network, particularly suitable are realized the indoor covering in multiple spot zone simultaneously in the sub-district of groups of building than comparatively dense.Realize that with the 3G broadband access network the indoor example that is covered as is elaborated below in conjunction with accompanying drawing.
The working frequency range of the 3G wireless signal of 3G broadband network emission is about 2.1GHz, it is that example describes frequently that present embodiment carries out mistake with the 3.5GHz frequency beyond this 3G frequency range, need to prove, the wrong repeater frequently of present embodiment proposition is the wrong frequency of realizing between 3G frequency range and the 3.5GHz, frequency beyond the frequency range of other 3G wireless signals can utilize, be not limited to 3.5GHz, for example 3GHz, 3.8GHz, 4GHz etc. can utilize.If the sub-district then produces interference for preventing to other overlay networks for mixing coverage cell, need avoid the wrong frequency of usefulness frequently of the shared Frequency Band Selection of these networks.Utilize the frequency range of not using in other outdoor covering signals to carry out mistake frequently, what all belong to the method for the invention is equal to the replacement method.
As Fig. 2, shown in Figure 3, Fig. 2 is that the wherein principle schematic of the indoor covering of one deck is realized in the tier building in the wrong repeater frequently of utilization of the present invention, and Fig. 3 uses and of the present inventionly utilizes wrong repeater frequently to realize the networking structure schematic diagram of indoor covering.For realizing the method for the invention, existing 3G broadband access network is in the described sub-district in the zone that the needs realization covers, add the special base station that is operated in the 3.5GHz frequency, and in the overlay area, be provided for the repeater of frequency inverted, the present invention is called wrong repeater frequently, thus, the 3G broadband access network of present embodiment comprises following a few part:
1, base station controller is connected to core net by the Iu interface, provides various broadband services by core net for the terminal that inserts;
2, be operated in the base station of 3G frequency range, connect base station controller, be operated in up, the downstream wireless signals of 3G frequency range, be used to realize the outdoor covering of this sub-district with interior reception or emission 3G frequency range by Iub interface;
3, be operated in the base station of 3.5GHz frequency and be arranged on repeater in the building that need to cover, be used to realize indoor covering, this base station connects base station controller by Iub interface equally, on the 3.5GHz frequency, receive or send wireless signal, signal between repeater and the base station works in the 3.5GHz frequency like this, receive the downstream wireless signals of the 3.5GHz frequency of base station by the repeater, be converted to the 3G frequency range and be transmitted into the overlay area; Perhaps the repeater receives the up-link wireless signal of the 3G frequency range that the terminal in the overlay area sends, be transmitted to the base station after the frequency of this up-link wireless signal is transformed into the 3.5GHz frequency, on the 3.5GHz frequency, receive the back by Iub interface reporting base station controller by the base station.
Cover the subregion if desired than big or skyscraper, in the time of can not covering fully by a wrong frequency repeater, mistake frequency repeater can being walked abreast, it is a plurality of to be set to.
Base station in the present embodiment is operated in the 3.5GHz frequency, so all system messages of base station include the 3.5GHz signal.For the transceiver that satisfies the base station receive and the 3G signal of emission at the 3.5GHz frequency, need satisfy the following requirement of agreement regulation:
1, supports 3G standard;
2, the dependency rule of 3.5GHz frequency wireless performance index is as spectral emission template, power output, spuious etc.
Above-mentioned standard and rule have concrete regulation in related protocol, carry out reference when the base station is provided with and get final product.
As shown in Figure 4, Fig. 4 is the wrong structural representation of repeater frequently, every link generally comprises main modular such as reception/transmitting antenna, duplexer, filter, power amplifier and constitutes, operation principle and existing shift frequency work station are similar, behind the frequency of selected wrong usefulness frequently, the relevant parameter of frequency converter and antenna is wherein specifically set the frequency requirement of satisfying the demand, concrete establishing method is the technology that present technique field personnel know, here repeat no more, the repeater is as follows to the processing procedure of wireless signal frequently for this mistake:
From up link, the wireless signal that antenna receives is in the 3G working frequency range, behind frequency converter, signal is transformed the 3.5GHz frequency by duplexer, filter filtering, after amplifying through power amplifier again, through duplexer, antenna emission, realize being connected with the base station;
From down link, the wireless signal that antenna receives is in the 3.5GHz working frequency points, behind frequency converter, signal is transformed the 3G frequency range by duplexer, filter filtering, after amplifying through power amplifier again, through duplexer, antenna emission, signal incoming terminal.
Equally, mistake also will satisfy the performance index that 3G standard is stipulated in the repeater frequently.Because 3G system uplink downlink has the fast power control technology, if wrong repeater frequently is not to be operated in a fixing multiplication factor, link is just unstable so, influences the accuracy of power control.In order to guarantee the effective control function of power of 3G system to realize this method, wrong repeater frequently should be operated in a fixing multiplication factor, should be the linear amplification of input signal power as output signal power.
There are two kinds of different application modes, dedicated mode and common way in wrong repeater frequently.The former application is that final user has wrong repeater frequently, and it can be installed in local arbitrarily, and the end user can not change the wrong operating state of repeater frequently, and the wrong power output of repeater frequently is limited.In common way, the 3G cellular carrier has wrong repeater frequently, and it has bigger power output than the former, the stricter remote maintenance functions that provides as requested, and operator can adjust its operating state, as changes maximum rated power output.
By above-mentioned network,, realized the good covering of indoor 3G frequency band signals by being operated in 3.5GHz frequency base station and the wrong transmission of carrying out 3.5GHz frequency wireless signal frequently between the repeater.Owing to adopt the repeater to realize the signal transmission, not be used in the area of coverage, web-transporting device for example is installed in the building, so the time that networking needs is short, operation is few, thereby has improved networking speed and efficient.And as long as after in the sub-district, setting up the base station that is operated in wrong point again and again, the user just can install the repeater equipment of inversion frequency as required voluntarily, realize that the zone covers or the improvement zone covers quality of signals, needn't operator be installed by the equipment of oneself, reduce the installation and maintenance workload of operator to a certain extent, reduced the networking cost of operator.
Different with existing shift frequency method of work, frequency-shift repeater is made up of two parts, near-end machine and remote termination, its shift frequency transmission mainly is to adopt shift frequency between near-end machine and the remote termination, the near-end machine has produced very big interference to the base station, and the present invention realizes that the wireless signal of indoor covering is to transmit between base station and repeater, and the wireless signal that transmits between base station and the repeater works in the 3.5GHz frequency, and outdoor covering does not produce any influence to existing system.
As shown in Figure 5, the access procedure with a terminal is that example further specifies the present invention:
S11, the wrong access request of repeater receiving terminal frequently, and will insert and ask to be transformed on the 3.5GHz frequency to launch;
The access request of s12, base station receiving terminal on the 3.5GHz frequency, and the request that will insert reports network by Iub interface;
S13, Radio Access Network carry out authentication according to inserting the information of carrying in the request to terminal, the record authenticating result;
S14, network return the response message of the authenticating result of this terminal to the base station by Iub interface;
After s15, base station receive the authenticating result response message, on the 3.5GHz frequency, launch;
S16, wrong repeater frequently receive the wireless signal of 3.5GHz frequency, after receiving this authenticating result response message, are transformed into emission in the 3G frequency range;
S17, terminal receive the response message of 3G frequency range.
If authentication is passed through, terminal is access in broadband networks in repeater, base station frequently by mistake, and the signal between terminal and the network is divided into uplink and downlink alternately:
As shown in Figure 6, the transmittance process of up-link wireless signal is:
The up-link wireless signal of the 3G frequency range of s21, the emission of wrong repeater receiving terminal frequently, and this up-link wireless conversion of signals launched to the 3.5GHz frequency;
S22, base station receive the up-link wireless signal on the 3.5GHz frequency;
S23, base station are given network by Iub interface with the up-link wireless signal reporting that receives.
As shown in Figure 7, the transmittance process of downstream wireless signals is:
S31, base station receive the downstream wireless signals of network by Iub interface;
S32, base station are received in transmitting downstream wireless signal on the 3.5GHz frequency;
S33, wrong repeater frequently receive the downstream wireless signals of 3.5GHz frequency;
S34, wrong repeater frequently are transformed into 3G frequency range and emission with this 3.5GHz frequency downstream wireless signals;
S35, terminal receive downstream wireless signals on the 3G frequency range.
To sum up, when not needing to increase special 3.5GHz terminal, realized utilizing the 3.5GHz frequency to carry out the purpose of indoor covering.
The wrong frequency method that the present invention utilizes, the resource of frequency range that to not use is used for the zone and covers, neither need to take existing frequency spectrum resource, other signals are not produced again and disturb, during particularly in order to the indoor covering of realization in 3G network, existing 3G frequency spectrum resource is fully used, can be used to support the Any user equipment of 3G.Because the repeater in the area of coverage is operated on the area of coverage signal frequency range in addition, can not cause interference to outdoor signal, compare with shift frequency of the prior art station mode, transmitting power can suitably strengthen, therefore can realize signal in the area of coverage and area of coverage external signal continuously, the switching of support terminal easily.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1, a kind of area coverage method of Radio Access Network signal is characterized in that, comprises the steps:
Transmitting downstream wireless signal on the frequency is set at one beyond the frequency range that described Radio Access Network takies in the base station, and described downstream wireless signals is transmitted on described setting frequency;
Repeater in the described zone receives the described downstream wireless signals of base station, and the working frequency points of this downstream wireless signals is transformed into frequency range that described Radio Access Network takies with interior and emission.
2, the method for claim 1 is characterized in that, also comprises step: the terminal of described Radio Access Network receives described downstream wireless signals in described zone.
3, method as claimed in claim 2 is characterized in that, also comprises the steps:
The repeater receives the up-link wireless signal that described terminal is launched in the frequency range that described Radio Access Network takies, this up-link wireless conversion of signals is also launched to described setting frequency, and this up-link wireless signal is transmitted on described setting frequency;
The base station receives described up-link wireless signal on described setting frequency.
4, as claim 1,2 or 3 described methods, it is characterized in that described Radio Access Network is a wireless broadband network.
5, method as claimed in claim 4 is characterized in that, described setting frequency is the 3.5GHz frequency.
6, a kind of Radio Access Network of realizing that the zone covers comprises: base station controller, connect first base station of this base station controller and the repeater of this first base station of wireless connections by interface; Described repeater is arranged in described zone, launches after the working frequency points of reception wireless signal, the described wireless signal of conversion; It is characterized in that:
Described wireless signal comprises that described first base station beyond frequency range that described Radio Access Network takies sets the downstream wireless signals that is transmitted to described repeater on the frequency, and this downstream wireless signals is transformed into frequency range that described network takies with interior and be transmitted into described zone by described repeater.
7, network as claimed in claim 6, it is characterized in that, described wireless signal also comprises frequency range that described network that described repeater receives takies with interior up-link wireless signal from described zone, this up-link wireless signal is transformed on the described setting frequency by described repeater and is transmitted to described first base station and receives.
8, as claim 6 or 7 described networks, it is characterized in that, described network also comprises second base station that connects described base station controller by interface, the frequency range that the frequency range that this second base station takies at described network takies with the described network of interior reception is with interior up-link wireless signal, or launches frequency range that described network takies with interior downstream wireless signals.
9, network as claimed in claim 8 is characterized in that, described repeater comprises filter, frequency converter and the power amplifier that two covers connect in turn, respectively up-link wireless signal or downstream wireless signals is carried out filtering, working frequency points conversion and signal amplification.
10, network as claimed in claim 9 is characterized in that, described network is a wireless wideband access network.
11, as claim 6 or 7 described networks, it is characterized in that, described repeater in described zone parallel be set to a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100678792A CN100514883C (en) | 2005-04-29 | 2005-04-29 | Radio signal zone covering method and radio cut-in network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100678792A CN100514883C (en) | 2005-04-29 | 2005-04-29 | Radio signal zone covering method and radio cut-in network |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100743704A Division CN101242628A (en) | 2005-04-29 | 2005-04-29 | Wireless signal area coverage method and wireless access network |
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| CN1859035A CN1859035A (en) | 2006-11-08 |
| CN100514883C true CN100514883C (en) | 2009-07-15 |
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| CNB2005100678792A Expired - Fee Related CN100514883C (en) | 2005-04-29 | 2005-04-29 | Radio signal zone covering method and radio cut-in network |
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| CN106470426B (en) * | 2015-08-14 | 2019-11-15 | 成都鼎桥通信技术有限公司 | A kind of multiple wireless networking methods for moving Wireless Broadband Communication Systems |
| CN111039108A (en) * | 2019-12-30 | 2020-04-21 | 洛阳松晨网络科技有限公司 | Method for signal coverage in application of elevator Internet of things |
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