CN102118778B - Method and device for dynamic optimization of wireless communication system, and wireless communication system - Google Patents
Method and device for dynamic optimization of wireless communication system, and wireless communication system Download PDFInfo
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- 238000005457 optimization Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007726 management method Methods 0.000 claims description 34
- 238000012913 prioritisation Methods 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000002452 interceptive effect Effects 0.000 abstract 3
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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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
- H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
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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
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/143—Downlink power control
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Abstract
The invention relates to a method and a device for dynamic optimization of a wireless communication system, and a wireless communication system. The method comprises the following steps: intercepting a signal of an adjacent cell; judging whether interference exists in the intercepted signal of the adjacent cell; and if interference exists in the intercepted signal of the adjacent cell, generating an optimization adjustment scheme, and adjusting the channel frequency or the transmission power of the present cell or the adjacent cell sending out the interfering signal according to the generated optimization adjustment scheme. By adopting the scheme, the signal of the adjacent cell is intercepted, the corresponding optimization adjustment scheme is generated when the interfering signal is intercepted for the adjacent cell, and the channel frequency or the transmission power of the present cell or the adjacent cell sending out the interfering signal is adjusted according to the generated optimization adjustment scheme, so that the channel is dynamically and flexibly allocated, and the flexibility and the reliability of the wireless communication system are enhanced.
Description
Technical field
The present invention relates to communication network technology field, particularly the dynamic optimization apparatus of a kind of dynamic optimization method of cordless communication network, a kind of cordless communication network and a kind of wireless communication system.
Background technology
Along with fast development, the number of users of global mobile communication network increase gradually, mobile operator is also more and more higher to the requirement of capacity and covering.In Practical Project, the selection of site, base station is also not easy, and in application scenes, Host equipment room is undesirable, machine room cannot be set, and becomes a hang-up of networking.
RRU(Remote RF Unit, Remote Radio Unit) be the far end radio frequency far-pulling module of communication system, there is the feature lightweight, volume is little, easy for installation, can directly be installed near on the metal mast or metope of aerial position.Under normal circumstances, RRU is by optical fiber and BBU(Base Band Unit, Base Band Unit) link together, it has formed distributed base station together with BBU.In Fig. 1, illustrate that BBU and RRU form the schematic diagram of distributed base station, as shown in Figure 1, between RRU and BBU, use IR(Interface between the RRU and the BBU, interface between RRU and BBU) agreement communicates, BBU and RNC(Radio Network Controller, radio network controller) between by Iub(Interface between the BBU and the RNC, interface between BBU and RNC) protocol communication, RNC and CN(Core Network, core network) by Iu(Interface between the UTRAN and the CN, interface between UTRAN and CN) agreement communicates, wherein UTRAN is the abbreviation of Universal Terrerstrial Radio Access Network universal terrestrial access network.
The distributed base station system that above-mentioned RRU and BBU form has the features such as low-power consumption, large capacity, low equipment cost, high integration, high reliability, networking flexibility, thereby the cost of networking and maintenance is significantly reduced, and be applicable to multiple capacity occasion, these features are widely used RRU in GSM, CDMA, LTE, TD-SCDMA, WCDMA, CDMA2000, Wimax, wlan network, and substitute the application of macro base station, microcellulor and repeater in many occasions.
In the face of the reform of keen competition and mobile communication operators system day by day, the communication network development and environmental monitoring have caused a series of problems to be solved that have, traditional base station RRU technology can not meet operator to the requirement that network quality promotes and new business is carried out, and the development and application of new technology and new business has risen to a very important position.In this new application, it is a main purpose in communications wireless network system that limited frequency spectrum resource is carried out effectively utilizing, in the time that limited frequency spectrum resource is utilized, most frequency channels method of salary distribution, exceeding outside a given interference distance, frequency of utilization is re-started to distribution, should shortcoming in this way be, the channel frequency distributing is fixed, thereby require accurate and complicated network emulation, but still can there is certain error in emulation result and practical application out.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide dynamic optimization apparatus and a kind of wireless communication system of a kind of dynamic optimization method of cordless communication network, a kind of cordless communication network, it can be dynamically, neatly cordless communication network is dynamically adjusted, and improves flexibility and the reliability of wireless communication system.
For achieving the above object, the present invention by the following technical solutions:
A dynamic optimization method for cordless communication network, comprises step:
Intercept the signal of neighbor cell;
Whether the signal of the neighbor cell that judgement listens to there is interference; If exist, generate and optimize and revise scheme, and according to the scheme of optimizing and revising generating, current area or this neighbor cell of sending interference signal are adjusted.
A dynamic optimization apparatus for cordless communication network, comprising:
Be arranged on the listening functions link of RRU down link, for intercepting frequency and the power of signal of neighbor cell;
Disturb judging unit, for the signal of intercepting according to listening functions link, judge whether the signal of neighbor cell exists interference;
Prioritization scheme generation unit, while there is interference, generates the scheme of optimizing and revising for judging at described interference judging unit;
Adjustment unit, for the scheme of optimizing and revising generating according to described prioritization scheme generation unit, is optimized adjustment to current area or this neighbor cell of sending interference signal.
A kind of wireless communication system, comprises the dynamic optimization apparatus of cordless communication network as above.
According to the scheme of the invention described above, it is the signal by intercepting neighbor cell, and in the time of the interference of signal that listens to neighbor cell, generate the scheme of optimizing and revising accordingly, and optimize and revise scheme according to this generation current area or channel frequency or the transmitting power of sending this neighbor cell of interference signal are adjusted, thereby channel is carried out dynamically, distributed flexibly, improved flexibility and the reliability of wireless communication system.
Brief description of the drawings
Fig. 1 is the schematic diagram that BBU and RRU form distributed base station;
Fig. 2 is the schematic flow sheet of the dynamic optimization method embodiment of cordless communication network of the present invention;
Fig. 3 is the structural representation of the dynamic optimization apparatus embodiment of cordless communication network of the present invention;
Fig. 4 is the structural representation of the listening functions link of dynamic optimization apparatus of the present invention;
Fig. 5 is the star-like connected mode schematic diagram of the dynamic optimization apparatus of cordless communication network of the present invention;
Fig. 6 is the chain connected mode schematic diagram of the dynamic optimization apparatus of cordless communication network of the present invention;
Fig. 7 is the ring-like connected mode schematic diagram of the dynamic optimization apparatus of cordless communication network of the present invention;
Fig. 8 is the mixed type connected mode schematic diagram of the dynamic optimization apparatus of cordless communication network of the present invention.
Embodiment
The present invention program's essential idea is to want automatically to monitor to wireless environment, to be optimized adjustment, to meet the flexibility of system and the demand of reliability.Just with preferred embodiment wherein, the present invention program is described in detail below.
As shown in Figure 2, be the schematic flow sheet of the dynamic optimization method embodiment of cordless communication network of the present invention, as shown in Figure 2, the method in the present embodiment comprises step:
Step S101: open listening functions, intercept frequency and the power of the signal of neighbor cell, enter step S102;
Step S102: whether the signal that judges neighbor cell exists interference, if do not exist, returns to above-mentioned steps S101 and continues to intercept, if exist, enters step S103;
Step S103: generate and optimize and revise scheme, and according to the scheme of optimizing and revising generating, current area or this neighbor cell of sending interference signal are adjusted.
According to the scheme in the present embodiment, it is by intercepting the signal of neighbor cell, and in the time of the interference of signal that listens to neighbor cell, generate the scheme of optimizing and revising accordingly, and optimize and revise scheme according to this generation current area or channel frequency or the transmitting power of sending this neighbor cell of interference signal are adjusted, thereby channel is carried out dynamically, distributed flexibly, improved flexibility and the reliability of wireless communication system.
Wherein, in the time of above-mentioned signal of intercepting neighbor cell, the concrete mode of intercepting can be to adopt existing mode in prior art, for example femto(Femtocell, indoor cell phone network access point technology, is called for short femto) in can realize intercepting of running status to other communities and interference.But in the present invention program, RRU, except intercepting running status and the interference of co-frequency cell, can also intercept running status and the interference of alien-frequency district, while intercepting alien-frequency district, increase the filter of corresponding band.In a concrete example, taking mobile GSM900 system as example, in the time intercepting the running status of co-frequency cell and disturb, intercept link can with a downlink shared filter, for the running status of alien-frequency district and intercepting of interference, can increase the filter of corresponding band, realize the listening functions with alien frequencies by the switching of switch.
In the time judging whether neighbor cell exists interference, can adopt existing mode in prior art to judge, can be for example:
For gsm system, when in same frequency at one time, when the signal power listening to is greater than the threshold value (being called the first predetermined threshold value) of setting, to judge that the signal listening to exists to disturb, this first predetermined threshold value can be according to actual conditions free setting;
For TD-SCDMA, CDMA, CDMA2000, WCDMA or LTE system, when on same time domain, same frequency domain and same code territory, when the signal power listening to is greater than the threshold value (being called the second predetermined threshold value) of setting, judge that the signal listening to exists interference; For different code territories, in the time that the signal power listening to deducts the threshold value (being called the 3rd predetermined threshold value) that coding gain is greater than setting, judge that the signal listening to exists interference, wherein, the occurrence of the second predetermined threshold value, the 3rd predetermined threshold value can be according to actual conditions free setting, and the second predetermined threshold value can be set as identical value with the 3rd predetermined threshold value, also can be set as different values.
The scheme of optimizing and revising of above-mentioned generation, it can be the transmitting power of directly heightening current area, the step-length of each certain setting of adjustable height, after adjustment unit adjustment, again the signal of neighbor cell is intercepted, the signal that the judges neighbor cell whether signal of Dui Zhe community produces and disturbs, if there is interference, then adopts aforesaid way adjustment.
While adopting in this way, because being directly adjusts the transmitting power of current area, if constantly heighten the transmitting power of current area, after the transmitting power of current area is too high, likely can neighbor cell be produced and be disturbed, make and can heighten the transmitting power of neighbor cell, can make the transmitting power of each community all very large, thereby can enter vicious circle, cause the performance of whole system to worsen, to this, can consider the maximum of the transmitting power of setting each community, or consider other adjustment mode.
To this, the scheme of optimizing and revising generating, can also be to choose comparatively pure frequency for current area to reconfigure community, can be specifically according to electromagnetic wave space attenuation formula, calculate the distance of adjacent cells, to meet the QoS(Quality of Service of current area, service quality) be bottom line, the scope that will cover according to electromagnetic wave space attenuation formula and community again arranges the transmitting power of current area, concrete implementation, with of the prior art identical, does not repeat them here.
Above-mentioned generation optimize and revise scheme time, can also be to generate according to Qos:
When sending the Qos of neighbor cell of interference signal when higher, for example exceed the higher limit of certain setting, the scheme of optimizing and revising generating can be that this angle of declination that sends the antenna of the neighbor cell of interference signal is lowered, also can be that this transmitting power of sending the neighbor cell of interference signal is turned down, the former is nonlinear, and the latter is linear, comparatively speaking, the former effect is better, can preferentially select the mode of lowering angle of declination;
When sending the Qos of neighbor cell of interference signal when not high, even just to meet, for example lower than or can just reach the lower limit of certain setting, illustrate that there is interference signal this neighbor cell, this neighbor cell meets Qos by improving transmitting power, thereby interference is caused in current area, to this, the scheme of optimizing and revising generating can be again to choose comparatively pure frequency for this neighbor cell of sending interference signal, minimum transmitting power is set in the situation that meeting this neighbor cell Qos, identical with above-described embodiment one of the concrete mode of choosing pure frequency, do not repeat them here,
In the time sending the Qos of neighbor cell of interference signal and reached requiring of setting, for example, within the Qos of this neighbor cell is positioned at the scope of certain setting, the configuration that current area is described may be undesirable, therefore, the scheme of optimizing and revising generating can be to heighten the transmitting power of current area, or can be also again to choose comparatively pure frequency for current area, minimum transmitting power is set in the situation that meeting this current area Qos.
According to the dynamic optimization method of the cordless communication network of the invention described above, the present invention also provides a kind of dynamic optimization apparatus of cordless communication network, as shown in Figure 3, be the structural representation of the embodiment of the dynamic optimization apparatus of cordless communication network of the present invention, it includes:
Be arranged on the listening functions link of RRU down link, for intercepting frequency and the power of signal of neighbor cell;
Disturb judging unit, judge for the signal of intercepting according to listening functions link whether the signal of neighbor cell exists interference;
Prioritization scheme generation unit, in the time disturbing judging unit to judge existence interference, generates the scheme of optimizing and revising;
Adjustment unit, for the scheme of optimizing and revising generating according to above-mentioned prioritization scheme generation unit, is optimized adjustment to current area or this neighbor cell of sending interference signal.
Wherein, the above-mentioned listening functions link that is arranged on RRU down link, can there is multiple implementation, as long as can listen to frequency and the power of the signal of neighbor cell, as shown in Figure 4, be the structural representation of a specific embodiment of the listening functions link of the dynamic optimization apparatus of cordless communication network of the present invention.It specifically can comprise: filter, low noise amplifier, ADC(Analog-to-Digital Converter, A/D converter) and digital signal processing unit, the input of low noise amplifier is connected with filter, the output of low noise amplifier is connected with the input of ADC, and the output of ADC is connected with the input of digital signal processing unit.Wherein, low noise amplifier is mainly that analog signal is amplified, and ADC completes high-speed modulus transformation, and digital signal processing unit has been used for the digitized processing of various standard signals,
Distinguish from function, above-mentioned digital signal processing unit can comprise again: power subsystem, for system provides power supply support; Monitor And Control Subsystem, is configured digit chip, the running status of supervisory control system, and report; Clock Subsystem, for each digit chip provides work clock; Intermediate frequency process subsystem, realizes Digital Down Convert function.
In above-mentioned listening functions link, the filter using can with the downlink shared same filter of RRU, to realize intercepting co-frequency cell, in addition, can also increase the filter of corresponding band, to realize the intercepting of alien-frequency district, thereby not only can intercept the signal of co-frequency cell, the signal of alien-frequency district can also be intercepted, the listening functions of same alien frequencies can be realized by the switching of switch.
The listening functions that the listening functions link of the invention described above scheme is realized, can offset function, up diversity feature etc. with standing wave measuring ability, DPD and exist simultaneously, also can exist by random combine, can also be present in independently of each other in system.Even, in the situation that there is no other any paths (comprise and there is no uplink and downlink path), listening functions also can independently exist.
Above-mentioned ADC is in the time carrying out analog-to-digital conversion, and in the time that signal frequency is higher, as the signal of GSM900, ADC can carry out Direct Sampling to it, also can first down-convert the signals to intermediate frequency or zero intermediate frequency is sampled to it again.
In the time judging whether neighbor cell exists interference, can adopt existing mode in prior art to judge, can be for example:
For gsm system, when in same frequency at one time, when the signal power listening to is greater than the threshold value (being called the first predetermined threshold value) of setting, to judge that the signal listening to exists to disturb, this first predetermined threshold value can be according to actual conditions free setting;
For TD-SCDMA, CDMA, CDMA2000, WCDMA or LTE system, when on same time domain, same frequency domain and same code territory, when the signal power listening to is greater than the threshold value (being called the second predetermined threshold value) of setting, judge that the signal listening to exists interference; For different code territories, in the time that the signal power listening to deducts the threshold value (being called the 3rd predetermined threshold value) that coding gain is greater than setting, judge that the signal listening to exists interference, wherein, the occurrence of the second predetermined threshold value, the 3rd predetermined threshold value can be according to actual conditions free setting, and the second predetermined threshold value can be set as identical value with the 3rd predetermined threshold value, also can be set as different values.
Based on different Considerations, the set position difference to some extent in each unit in the dynamic optimization apparatus of the cordless communication network of the invention described above, thereby the mode of optimizing and revising adopting in the time specifically optimizing and revising is also different, make the effect finally reaching also can be different, below just several embodiment wherein describe respectively.
Embodiment mono-
In the present embodiment, above-mentioned interference judging unit has multiple, be separately positioned on each RRU place, above-mentioned prioritization scheme generation unit has multiple, be separately positioned on each RRU place, above-mentioned adjustment unit has multiple, be separately positioned on each RRU place, be in each RRU, to be provided with listening functions link, disturb judging unit, prioritization scheme generation unit, adjustment unit, be that each RRU place is provided with by a listening functions link, one is disturbed judging unit, a prioritization scheme generation unit, the dynamic optimization apparatus of an adjustment unit composition, self realize and intercepting by each RRU, disturb judgement, optimize and revise the generation of scheme, the process of a series of dynamic optimization such as optimize and revise.
In this implementation, concrete processing procedure can be, the listening functions link of RRU is intercepted frequency and the power of the signal of neighbor cell, disturbing the signal that listens to according to RRU of judging unit to judge the signal of this neighbor cell, whether Dui Zhe community exists disturbs, disturb if exist, prioritization scheme generation unit generates the corresponding scheme of optimizing and revising, and adjustment unit is optimized adjustment according to the scheme of the optimizing and revising Dui Zhe community generating.After the adjustment unit of RRU is optimized adjustment, relevant parameter after this RRU also optimizes and revises oneself sends to each adjacent community, can up send to the equipment such as BBU, RNC, OMC, to strengthen the reliability of network, make the relation between neighbor cell more close simultaneously.
The scheme of optimizing and revising that above-mentioned prioritization scheme generation unit generates, it can be the transmitting power of directly heightening BenRRU community (abbreviation current area), the step-length of each certain setting of adjustable height, after adjustment unit adjustment, again the signal of neighbor cell is intercepted, the signal that the judges neighbor cell whether signal of Dui Zhe community produces and disturbs, if there is interference, then adopts aforesaid way adjustment.
While adopting in this way, because each RRU adjusts respectively, that the transmitting power to oneself or angle of declination are adjusted separately, in the situation that adjusting transmitting power, if constantly heighten the transmitting power of this community, after the transmitting power of current area is too high, likely can neighbor cell be produced and be disturbed, make neighbor cell heighten again the transmitting power of self, thereby the transmitting power of oneself is all constantly raised in each community, can make the transmitting power of each community all very large, thereby can enter vicious circle, cause the performance of whole system to worsen.
To this, the scheme of optimizing and revising that the prioritization scheme generation unit of each RRU generates, can also be to choose comparatively pure frequency for current area to reconfigure community, can be specifically according to electromagnetic wave space attenuation formula, calculate the distance of adjacent cells, taking the QoS that meets current area as bottom line, then the transmitting power of current area is set according to the scope that electromagnetic wave space attenuation formula and community will cover, concrete implementation, with of the prior art identical, does not repeat them here.
Generated suitable optimizing and revising after scheme at prioritization scheme generation unit, adjustment unit is optimized and revised scheme and is carried out corresponding adjustment according to this, realizes the dynamic optimization to cordless communication network.
Embodiment bis-
In the present embodiment, above-mentioned interference judging unit has multiple, be separately positioned on each RRU place, above-mentioned prioritization scheme generation unit has one, be arranged on BBU or management control center place, above-mentioned adjustment unit has one, be arranged on BBU or management control center place, in each RRU, be provided with listening functions link, disturb judging unit, each RRU realizes and intercepting respectively, disturb the process of judgement, prioritization scheme generation unit, adjustment unit is arranged on BBU or the management control center place of upper end, be optimized the generation of scheme and the process of optimizing and revising by BBU or management control center unification, wherein, the management control center here can be RNC, OMC or other management control center, can do different settings according to actual needs.
In this implementation, concrete processing procedure can be: the listening functions link of each RRU is intercepted frequency and the power of the signal of neighbor cell, and judge the signal of this neighbor cell whether Dui Zhe community exists and disturb according to listening to the frequency of signal of Ge community and power, disturb if exist, the frequency of the signal of the neighbor cell listening to and power are upwards sent to BBU or management control center, can also exist the result of determination of disturbing to report this BBU or management control center Dui Zhe community, this neighbor cell simultaneously, prioritization scheme generation unit in BBU or management control center generates accordingly and optimizes and revises accordingly scheme, adjustment unit is optimized and revised scheme and is optimized adjustment according to this.
The scheme of optimizing and revising that prioritization scheme generation unit generates, it can be the transmitting power of directly heightening current area, the step-length of each certain setting of adjustable height, after adjustment unit adjustment, again the signal of neighbor cell is intercepted, the signal that the judges neighbor cell whether signal of Dui Zhe community produces and disturbs, if there is interference, then adopts aforesaid way adjustment.
While adopting in this way, because being directly adjusts the transmitting power of current area, if constantly heighten the transmitting power of current area, after the transmitting power of current area is too high, likely can neighbor cell be produced and be disturbed, make and can heighten the transmitting power of neighbor cell, can make the transmitting power of each community all very large, thereby can enter vicious circle, cause the performance of whole system to worsen.
To this, the scheme of optimizing and revising that prioritization scheme generation unit generates, can also be to choose comparatively pure frequency for current area to reconfigure community, can be specifically according to electromagnetic wave space attenuation formula, calculate the distance of adjacent cells, taking the QoS that meets current area as bottom line, then the transmitting power of current area is set according to the scope that electromagnetic wave space attenuation formula and community will cover, concrete implementation, with of the prior art identical, does not repeat them here.
Prioritization scheme generation unit, in the time that scheme is optimized and revised in generation, can also be to generate according to Qos:
When sending the Qos of neighbor cell of interference signal when higher, for example exceed the higher limit of certain setting, the scheme of optimizing and revising generating can be that the angle of declination of the antenna of this neighbor cell is lowered, also can be that the transmitting power of this neighbor cell is turned down, the former is nonlinear, and the latter is linear, comparatively speaking, the former effect is better, can preferentially select the mode of lowering angle of declination;
When sending the Qos of neighbor cell of interference signal when not high, even just to meet, for example lower than or can just reach the lower limit of certain setting, illustrate that there is interference signal this neighbor cell, this neighbor cell meets Qos by improving transmitting power, thereby interference is caused in current area, to this, the scheme of optimizing and revising generating can be again to choose comparatively pure frequency for this neighbor cell, minimum transmitting power is set in the situation that meeting this neighbor cell Qos, identical with above-described embodiment one of the concrete mode of choosing pure frequency, do not repeat them here,
In the time sending the Qos of neighbor cell of interference signal and reached requiring of setting, for example, within the Qos of this neighbor cell is positioned at the scope of certain setting, the configuration that current area is described may be undesirable, therefore, the scheme of optimizing and revising generating can be to heighten the transmitting power of current area, or can be also again to choose comparatively pure frequency for current area, minimum transmitting power is set in the situation that meeting this current area Qos.
Generated suitable optimizing and revising after scheme at prioritization scheme generation unit, adjustment unit is optimized and revised scheme and is carried out corresponding adjustment according to this, realizes the dynamic optimization to cordless communication network.
Identical with above-described embodiment one of other technologies feature in the present embodiment, does not repeat them here.
Embodiment tri-
In the present embodiment, above-mentioned interference judging unit has one, be arranged on BBU or management control center place, above-mentioned prioritization scheme generation unit has one, be arranged on BBU or management control center place, above-mentioned adjustment unit has one, be arranged on BBU or management control center place, in each RRU, be only provided with listening functions link, only be used for frequency and the power of the signal of intercepting neighbor cell, disturb judging unit, prioritization scheme generation unit, adjustment unit is arranged on BBU or the management control center place of upper end, the judgement of being disturbed by BBU or management control center unification, the generation of prioritization scheme and optimizing and revising, wherein, the management control center here can be RNC, OMC or other management control center, can do different settings according to actual needs.
In this implementation, concrete processing procedure can be: the listening functions link of each RRU is intercepted frequency and the power of the signal of neighbor cell, and frequency and the power of the signal that listens to Ge community are upwards sent to BBU or management control center, after BBU or management control center receive, disturb judging unit to analyze judgement, judge whether neighbor cell produces and disturb current area, if, generate and optimize and revise accordingly scheme by prioritization scheme generation unit, optimize and revise scheme and be optimized adjustment according to this by adjustment unit.
Identical with above-described embodiment two of other technologies feature in the present embodiment, does not repeat them here.
Embodiment tetra-
In the present embodiment, above-mentioned interference judging unit has one, be arranged on BBU or management control center place, above-mentioned prioritization scheme adjustment unit has one, be arranged on BBU or management control center place, above-mentioned adjustment unit has multiple, be separately positioned on each RRU place, in each RRU, be provided with listening functions link, adjustment unit, each RRU realizes respectively intercepting of signal to neighbor cell, the process of optimizing and revising, disturb judging unit, prioritization scheme generation unit is arranged on BBU or the management control center place of upper end, the process of the judgement of being disturbed by BBU or management control center unification, and scheme is optimized and revised in generation accordingly, wherein, the management control center here can be RNC, OMC or other management control center, can do different settings according to actual needs.
In this implementation, concrete processing procedure can be: the listening functions link of each RRU is intercepted frequency and the power of the signal of neighbor cell, and frequency and the power of the signal that listens to Ge community are upwards sent to BBU or management control center, after BBU or management control center receive, disturb judging unit to analyze judgement, judge whether neighbor cell produces and disturb current area, if, generate by prioritization scheme generation unit the scheme of optimizing and revising accordingly, and the scheme of optimizing and revising generating is sent to the adjustment unit of corresponding RRU, optimize and revise scheme and be optimized adjustment according to this by adjustment unit.
Identical with above-described embodiment two of other technologies feature in the present embodiment, does not repeat them here.
In the explanation of the dynamic optimization apparatus to cordless communication network of the present invention in the various embodiments described above, all to judge from analyzing whether neighbor cell produces to current area the angle of disturbing and describe, in fact, according to dynamic optimization apparatus of the present invention, can make whole cordless communication network reach the state of a dynamic equilibrium.
For example, when the QoS that monitors community drops to certain value, can again detect by listening functions the wireless network environment of respective cell, and take appropriate measures according to the signal listening to, for example, increase cell transmit power, again choose comparatively pure frequency etc.; When the QoS that monitors community rises to certain value, can again detect by listening functions the wireless network environment of respective cell, and take appropriate measures according to the signal listening to, because whole cordless communication network is dynamic equilibrium, when the QoS of certain community wherein too high, will certainly affect the QoS of other related cell, now can make cordless communication network reach balance by reducing the measures such as the transmitting power of community, thereby make cordless communication network can reach a self-optimization function.
The dynamic optimization apparatus of the cordless communication network of the invention described above, according to the difference of the connected mode of communication network, can have different application scenarioss, and Fig. 5 to Fig. 8 shows several application scenarioss wherein.Considering in the present invention program, need to listening functions link be set in each RRU, therefore, in Fig. 5 to Fig. 8, is to describe so that RRU called after is intercepted to RRU.
As shown in Figure 5, be the schematic diagram of star-like connected mode, star-like connection is mainly used in densely populated area, and the link of intercepting signal process is few, user density is less, network is simple, reliability is high, maintenance and convenient engineering installation.As shown in Figure 6, it is the schematic diagram of chain connected mode, chain connects and is applicable to zonal distribution, area that user density is less, the link of intercepting signal process is more with respect to star-like connected mode, but under same geographical environment, the length that chain connects applied optical fiber is fewer than star-like connection, has saved to a certain extent transmission equipment.As shown in Figure 7, be the schematic diagram of ring-like connected mode, in ring-like connected mode, in ring, each node has two superior nodes, and there are two links in the transmission of intercepting signal, has improved the reliability of link, is relatively suitable for the application of large stadium.As shown in Figure 8, be the schematic diagram of mixed type connected mode, it is mainly that comprehensive chain connects and the star-like advantage being connected separately, is applicable to user density inequality, occasion that diversity ratio is larger.
According to the dynamic optimization apparatus of the cordless communication network of the invention described above, the present invention also provides a kind of wireless communication system, and the dynamic optimization apparatus that it comprises any one cordless communication network as above, does not repeat them here.
Accordingly, according to the invention described above scheme, can realize following new function:
Automatically open station function: in the situation that there is no engineers and technicians, only need installation personnel that RRU is in place, opening power, RRU just can optimize by listening functions the angle of declination of antenna in cell, community can reasonably be covered, intercept the information such as configuration, the transmitting power of neighbor cell of neighbor cell channel frequency, the parameter such as channel frequency, transmitting power of automatic configuration system;
Problem self-locating function: RRU real work can monitor by listening functions and navigation system running in some problems of occurring, as high in cutting off rate, interference signal is strong;
Self-optimization function: after self-align by problem, system can be taked corresponding Optimized Measures to the problem occurring automatically, problem is solved, even if can not automatically solve by system, also positioning problems can be got off by listening functions, facilitate engineers and technicians to solve a problem promptly, increase operating efficiency, improve the reliability of network.
The invention described above scheme, can be mainly used in the communication network of the standards such as GSM, CDMA, TD-SCDMA, LTE, WCDMA, CDMA2000, Wimax, WLAN.
Above-described embodiment of the present invention, is only the detailed description to preferred embodiments of the present invention, does not form limiting the scope of the present invention.Any amendment of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection range of the present invention.
Claims (7)
1. a dynamic optimization method for cordless communication network, is characterized in that, comprises step:
Intercept the signal of the neighbor cell of described radio frequency remote unit RRU by being arranged on the listening functions link of radio frequency remote unit RRU down link;
Whether the signal of the neighbor cell that judgement listens to there is interference; If exist, generate and optimize and revise scheme, and according to the scheme of optimizing and revising generating, current area or this neighbor cell of sending interference signal are adjusted the community that described current area is described radio frequency remote unit RRU;
Whether the signal of the neighbor cell that listens to of judgement exists the mode of interference specifically to comprise: for gsm system, when in same frequency at one time, when the signal power listening to is greater than the first predetermined threshold value, judge that the signal listening to exists to disturb; For CDMA or LTE system, when on same time domain, same frequency domain and same code territory, when the signal power listening to is greater than the second predetermined threshold value, judge that the signal listening to exists interference; For different code territories, in the time that the signal power listening to deducts coding gain and is greater than the 3rd predetermined threshold value, judge that the signal listening to exists interference, described the second predetermined threshold value is identical or not identical with described the 3rd predetermined threshold value, and described cdma system comprises TD-SCDMA, CDMA2000 or WCDMA system;
The described scheme of optimizing and revising comprises following any one in every:
Heighten the transmitting power of current area or choose comparatively pure frequency for current area and reconfigure community;
In the time that the Qos of neighbor cell exceedes capping value, lower this neighbor cell antenna angle of declination or turn the transmitting power of this neighbor cell down;
When the Qos of neighbor cell is during lower than preset lower limit, for again choosing comparatively pure frequency in this neighbor cell, in the situation that meeting this neighbor cell Qos for this neighbor cell arranges minimum transmitting power;
In the time that the Qos of neighbor cell is positioned at preset range, heighten the transmitting power of current area or again choose comparatively pure frequency for current area, minimum transmitting power is set in the situation that meeting this current area Qos.
2. a dynamic optimization apparatus for cordless communication network, is characterized in that, comprising:
Be arranged on the listening functions link of radio frequency remote unit RRU down link, for intercepting frequency and the power of signal of neighbor cell of described radio frequency remote unit RRU;
Disturb judging unit, for the signal of intercepting according to listening functions link, judge whether the signal of neighbor cell exists interference;
Prioritization scheme generation unit, while there is interference, generates the scheme of optimizing and revising for judging at described interference judging unit;
Adjustment unit, for the scheme of optimizing and revising generating according to described prioritization scheme generation unit, is optimized adjustment, the community that described current area is described radio frequency remote unit RRU to current area or this neighbor cell of sending interference signal;
Described interference judging unit judges whether the signal of the neighbor cell listening to exists the mode of interference specifically to comprise: for gsm system, when in same frequency at one time, when the signal power listening to is greater than the first predetermined threshold value, judge that the signal listening to exists interference; For CDMA or LTE system, when on same time domain, same frequency domain and same code territory, when the signal power listening to is greater than the second predetermined threshold value, judge that the signal listening to exists interference; For different code territories, in the time that the signal power listening to deducts coding gain and is greater than the 3rd predetermined threshold value, judge that the signal listening to exists interference, described the second predetermined threshold value is identical or not identical with described the 3rd predetermined threshold value, and described cdma system comprises TD-SCDMA, CDMA2000 or WCDMA system;
The described scheme of optimizing and revising comprises following any one in every:
Heighten the transmitting power of current area or choose comparatively pure frequency for current area and reconfigure community;
In the time that the Qos of neighbor cell exceedes capping value, lower this neighbor cell antenna angle of declination or turn the transmitting power of this neighbor cell down;
When the Qos of neighbor cell is during lower than preset lower limit, for again choosing comparatively pure frequency in this neighbor cell, in the situation that meeting this neighbor cell Qos for this neighbor cell arranges minimum transmitting power;
In the time that the Qos of neighbor cell is positioned at preset range, heighten the transmitting power of current area or again choose comparatively pure frequency for current area, minimum transmitting power is set in the situation that meeting this current area Qos.
3. the dynamic optimization apparatus of cordless communication network according to claim 2, is characterized in that:
Described interference judging unit has multiple, be separately positioned on each radio frequency remote unit RRU place, described prioritization scheme generation unit has multiple, is separately positioned on each radio frequency remote unit RRU place, described adjustment unit has multiple, is separately positioned on each radio frequency remote unit RRU place;
Or
Described interference judging unit has multiple, be separately positioned on each radio frequency remote unit RRU place, described prioritization scheme generation unit has one, is arranged on Base Band Unit BBU or management control center place, described adjustment unit has one, is arranged on Base Band Unit BBU or management control center place;
Or
Described interference judging unit has one, be arranged on Base Band Unit BBU or management control center place, described prioritization scheme generation unit has one, be arranged on Base Band Unit BBU or management control center place, described adjustment unit has one, is arranged on Base Band Unit BBU or management control center place;
Or
Described interference judging unit has one, be arranged on Base Band Unit BBU or management control center place, described prioritization scheme generation unit has one, is arranged on Base Band Unit BBU or management control center place, described adjustment unit has multiple, is separately positioned on each radio frequency remote unit RRU place.
4. the dynamic optimization apparatus of cordless communication network according to claim 3, is characterized in that, described management control center is radio network controller (RNC).
5. according to the dynamic optimization apparatus of the cordless communication network described in claim 2 or 3, it is characterized in that, described listening functions link comprises: filter, the low noise amplifier being connected with described filter, the A/D converter ADC that input is connected with the output of described low noise amplifier, the digital signal processing unit that input is connected with the output of described A/D converter ADC, described filter comprises the filter of the corresponding band of alien-frequency district.
6. the dynamic optimization apparatus of cordless communication network according to claim 4, it is characterized in that, described listening functions link comprises: filter, the low noise amplifier being connected with described filter, the A/D converter ADC that input is connected with the output of described low noise amplifier, the digital signal processing unit that input is connected with the output of described A/D converter ADC, described filter comprises the filter of the corresponding band of alien-frequency district.
7. a wireless communication system, is characterized in that, comprises the dynamic optimization apparatus of the cordless communication network as described in the claims 2 to 6 any one.
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| CN201110078808.8A CN102118778B (en) | 2011-03-30 | 2011-03-30 | Method and device for dynamic optimization of wireless communication system, and wireless communication system |
| PCT/CN2011/084410 WO2012129940A1 (en) | 2011-03-30 | 2011-12-22 | Dynamic optimization method, device and wireless communication system for wireless communication network |
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| CN201110078808.8A CN102118778B (en) | 2011-03-30 | 2011-03-30 | Method and device for dynamic optimization of wireless communication system, and wireless communication system |
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| CN102118778B true CN102118778B (en) | 2014-11-12 |
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| CN102118778B (en) * | 2011-03-30 | 2014-11-12 | 京信通信系统（中国）有限公司 | Method and device for dynamic optimization of wireless communication system, and wireless communication system |
| CN103200686B (en) * | 2012-01-10 | 2015-09-16 | 鼎桥通信技术有限公司 | Adjust the method for carrier frequency point, radio network controller and base station |
| CN111835367B (en) | 2019-04-11 | 2022-04-22 | 华为技术有限公司 | Signal processing chip and communication device |
| CN112312490B (en) * | 2019-08-01 | 2022-09-16 | 中国移动通信集团浙江有限公司 | Signal switching device and system |
| CN113740800A (en) * | 2020-05-28 | 2021-12-03 | 南宁富桂精密工业有限公司 | Driving positioning system and driving positioning method |
| CN111918312A (en) * | 2020-08-14 | 2020-11-10 | 盐城工学院 | Dynamic optimization method and system of novel wireless communication network |
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| US5799004A (en) * | 1993-10-27 | 1998-08-25 | Nokia Telecommunications | Method for eliminating multiple-access interference and a mobile station |
| CN101102606A (en) * | 2007-07-20 | 2008-01-09 | 中兴通讯股份有限公司 | An indoor distributed system for supporting real time network optimization and its implementation method |
| CN101420746A (en) * | 2007-10-26 | 2009-04-29 | 中兴通讯股份有限公司 | Method for interference coordination between cells and interference coordination information transmission method therefor |
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| US7873327B2 (en) * | 2006-08-22 | 2011-01-18 | Alcatel-Lucent Usa Inc. | Method for adaptively controlling other cell interference |
| US8712461B2 (en) * | 2007-08-10 | 2014-04-29 | Qualcomm Incorporated | Autonomous adaptation of transmit power |
| CN101128011B (en) * | 2007-09-19 | 2012-05-23 | 中兴通讯股份有限公司 | Method for automatically optimizing cell interference |
| CN101662776B (en) * | 2008-08-29 | 2011-08-03 | 中国移动通信集团设计院有限公司 | Method and device for allocating cell frequency |
| CN102118778B (en) * | 2011-03-30 | 2014-11-12 | 京信通信系统（中国）有限公司 | Method and device for dynamic optimization of wireless communication system, and wireless communication system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5799004A (en) * | 1993-10-27 | 1998-08-25 | Nokia Telecommunications | Method for eliminating multiple-access interference and a mobile station |
| CN101102606A (en) * | 2007-07-20 | 2008-01-09 | 中兴通讯股份有限公司 | An indoor distributed system for supporting real time network optimization and its implementation method |
| CN101420746A (en) * | 2007-10-26 | 2009-04-29 | 中兴通讯股份有限公司 | Method for interference coordination between cells and interference coordination information transmission method therefor |
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| WO2012129940A1 (en) | 2012-10-04 |
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