CN101662775A - Method, device and system for reducing base station interference - Google Patents
Method, device and system for reducing base station interference Download PDFInfo
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- CN101662775A CN101662775A CN200810042335A CN200810042335A CN101662775A CN 101662775 A CN101662775 A CN 101662775A CN 200810042335 A CN200810042335 A CN 200810042335A CN 200810042335 A CN200810042335 A CN 200810042335A CN 101662775 A CN101662775 A CN 101662775A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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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
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Abstract
The embodiment of the invention discloses a method for reducing base station interference. The method comprises: receiving first interference information which comprises related information of the intensity of interference from MNB (marco node B) and the request bandwidth of small-scale cellular nodes; acquiring the degree of the interference of MNB downlink signals in the small-scale cellular nodes according to the first interference information; and adjusting the system operation parameters of the MNB according to the interference degree. The embodiment of the invention changes the adjustment for the transmitting power of the small-scale cellular nodes in the prior art into the adjustment for the system operation parameters of the MNB, wherein the system operation parameters comprise bandwidth or/and the transmitting power. As the small-scale cellular nodes are not adjusted, the coverage of the small-scale cellular nodes cannot be increased; the MNB downlink performance in a region cannot be affected; the coverage of the MNB in the region cannot be reduced; furthermore, the total throughput of the MNB and the small-scale cellular nodes can be increased, and the use efficiency ofspectrum is improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system that reduces base station interference.
Background technology
In communication network, the cellular cell that exists the mobile node under many base stations and the base station range to form.Wherein, macrocell base stations (Macro NodeB, MNB) design object is to satisfy the mobility requirement of the outdoor service application of user, and Home eNodeB (Home NodeB, HNB) or femtocell formula (femto-cell) all belong to small-sized honeycomb access node at the family or the Administrative Area network coverage, be mainly family or Administrative Area high-quality indoor high-speed wireless access easily is provided, make the user enjoy higher-quality broadband data services.Because ground such as HNB or femto-cell small-sized honeycomb access node is because more solve indoor effectively covering among a small circle in economical and efficient ground than MNB, and the problem of service quality, so the small-sized honeycomb access node receives increasing concern, become third generation partner program (3rd Generation Partnership Project, 3GPP), the hot research technology of third generation partner program 2 standardization bodies such as (3GPP2).
With HNB in the small-sized honeycomb node or femto-cell is example, when HNB or femto-cell are widely used, if resource allocation is incorrect, between outdoor MNB and HNB or femto-cell, may produce bigger interference, and then influence entire system performance and stability, therefore, the resource that coordination is used on MNB and a large amount of HNB or femto-cell will help to evade interference, realize the resources effective utilization.In the prior art, have the interference method of a kind of MNB of improvement to the small-sized honeycomb node: with HNB or femto-cell is example, when HNB or femto-cell are in following time of covering of MNB, the HNB user's of HNB or femto-cell (HUE) down link is easy to be subjected to the interference of MNB down link, especially when MNB used identical frequency range with HNB, this interference was more serious.For example, when identical, HUE will be subjected to disturb from the cochannel of MNB the downlink resource that the downlink resource that uses as HUE uses with MUE, make HUE be in the wireless environment of very low Signal to Interference plus Noise Ratio (SINR) on frequency.In case when SINR was lower than professional required minimum SINR, HUE will can not work fully.Therefore, the down transmitting power of HNB or femto-cell need be promoted,, make that the downlink business of HUE can operate as normal by improving the down transmitting power of small-sized honeycomb nodes such as HNB or femto-cell.
But adopt this method also to have shortcoming, because after increasing the descending power of HNB or femto-cell, increased the coverage of HNB or femto-cell, then be linked into MNB originally and be in HNB or near the UE of femto-cell, can be subjected to the strong jamming of HNB or femto-cell down link, therefore, MNB is in this zone down-link performance variation, thereby make MNB significantly reduce in this regional coverage, further, increase to the upper limit of device transmitting power when descending transmitting power after, this mode can not continue the data rate that provides higher.
Summary of the invention
The embodiment of the invention provides a kind of method, Apparatus and system that reduces base station interference, and to solve when increasing the descending power of small-sized honeycomb node, the problem that the MNB coverage that causes reduces further, can also provide higher data rate.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of method that reduces base station interference, comprising:
Receive first interfere information, described first interfere information comprises the interference strength that comes from macro base station MNB and the relevant information of small-sized honeycomb node bandwidth on demand;
According to described first interfere information, obtain the annoyance level of MNB downstream signal to the small-sized honeycomb node;
Adjust the System Operation parameter of MNB according to described annoyance level.
Wherein, described reception first interfere information specifically comprises:
With a time value is the cycle, continues to receive first interfere information.
Wherein, described reception first interfere information specifically comprises:
Receive the small-sized honeycomb Node Events and trigger first interfere information that ground sends to MNB.
Wherein, the System Operation parameter of the described annoyance level adjustment of described foundation MNB specifically comprises:
According to described annoyance level, on the frequency range of small-sized honeycomb node place, adjust the down transmitting power of corresponding MNB resource, so that the total throughout of adjusting the back or estimating adjusted MNB and small-sized honeycomb node is greater than adjusting total throughout before.
Wherein, the System Operation parameter of the described annoyance level adjustment of described foundation MNB specifically comprises:
According to described annoyance level, on the frequency range of small-sized honeycomb node place, MNB stops the use to the respective bandwidth resource, and wherein, the granularity of bandwidth resources is carrier wave, temporal frequency piece or subcarrier.
Wherein, described reception first interfere information specifically comprises:
Receive first interfere information by X2 interface or core net CN.
Wherein, described small-sized honeycomb node is Home eNodeB HNB, femtocell formula femto-cell base station, picocell pico cell or the evolution base station HeNB of family.
Wherein, described first interfere information can also comprise: the downlink throughput capacity information of the bandwidth information of small-sized honeycomb node, descending interference statistic information and/or small-sized honeycomb node.
Wherein, the relevant information of described small-sized honeycomb node bandwidth on demand comprises: the small-sized honeycomb node sends the data volume in the buffering area, the bandwidth or the data throughout of demand.
The embodiment of the invention also provides a kind of device that reduces base station interference, comprising:
First receiver module is used to receive first interfere information, and described first interfere information comprises the interference strength that comes from macro base station MNB and the relevant information of small-sized honeycomb node bandwidth on demand;
First acquisition module is used for according to described first interfere information, obtains the annoyance level of MNB downstream signal to the small-sized honeycomb node;
Adjusting module is used for the System Operation parameter according to described annoyance level adjustment MNB.
Wherein, described adjusting module specifically comprises:
Stop submodule, be used for according to described annoyance level, on the frequency range of small-sized honeycomb node place, MNB stops the use to the respective bandwidth resource.
Wherein, described adjusting module specifically comprises:
Adjust submodule, be used for, adjust the down transmitting power of MNB corresponding band in small-sized honeycomb node place frequency range;
Comparison sub-module, the total throughout of MNB and small-sized honeycomb node before being used for relatively adjusting is with the size of the total throughout of estimating, to guarantee the adjusting back or to estimate that adjusted throughput is greater than the total throughout before adjusting.
The embodiment of the invention provides a kind of method that reduces base station interference, comprising:
Centralized control entity receives second interfere information, and described second interfere information comprises the relevant information of interference source and interference strength and small-sized honeycomb node bandwidth on demand;
According to described second interfere information, the interference source to be adjusted that acquisition need be adjusted;
Adjust the System Operation parameter of interference source to be adjusted, to reduce base station interference.
Wherein, described interference source is the small-sized honeycomb node, and described centralized control entity receives second interfere information and comprises:
Centralized control entity receives second interfere information that the small-sized honeycomb node periodically sends.
Wherein, described interference source is the small-sized honeycomb node, and described centralized control entity receives second interfere information and comprises:
Centralized control entity receives the small-sized honeycomb Node Events and triggers second interfere information that ground sends.
Wherein, described interference source is MNB, and described centralized control entity receives second interfere information and comprises:
The schedule information of the Physical Resource Block that centralized control entity reception MNB periodically sends.
Wherein, described interference source is MNB, and described centralized control entity receives second interfere information and comprises:
Receive the schedule information of MNB according to the Physical Resource Block of the request message transmission of centralized control entity.
Wherein, described centralized control entity receives second interfere information and comprises:
Centralized control entity receives the bandwidth information that MNB sends.
Wherein, the System Operation parameter of described adjustment interference source to be adjusted specifically comprises:
When interference source to be adjusted is MNB, adjust the bandwidth of MNB or/and transmitting power according to described annoyance level.
Wherein, the parameter of described adjustment interference source to be adjusted specifically comprises:
When interference source to be adjusted is the small-sized honeycomb node, bandwidth resources and/or down transmitting power between the coordinates interference small-sized honeycomb node.
Wherein, the parameter of described adjustment interference source to be adjusted specifically comprises:
When interference source to be adjusted is MNB and small-sized honeycomb node, according to bandwidth and/or the down transmitting power of described annoyance level adjustment MNB, and bandwidth resources and/or down transmitting power between the coordinates interference small-sized honeycomb node.
Wherein, described second interfere information can also comprise: the downlink throughput capacity information of the bandwidth information of small-sized honeycomb node, descending interference statistic information, disturbed source and/or small-sized honeycomb node.
Wherein, the relevant information of described small-sized honeycomb node bandwidth on demand comprises: the small-sized honeycomb node sends the data volume in the buffering area, the bandwidth and/or the data throughout of demand.
The embodiment of the invention also provides a kind of centralized control entity, can independently be provided with, and also can be arranged in the network node, comprising:
Second receiver module is used to receive second interfere information, and described second interfere information comprises: the information of interference source and interference strength thereof and small-sized honeycomb node bandwidth on demand;
Second acquisition module is used for according to described second interfere information harmony messages result of the interference source to be adjusted that acquisition need be adjusted;
Sending module is used for the harmony messages result of interference source to be adjusted is sent to interference source to be adjusted and/or disturbed source.
The embodiment of the invention also provides a kind of system that reduces base station interference, comprising:
Centralized control entity, described centralized control entity comprises: second receiver module, second acquisition module and sending module, described second receiver module is used to receive second interfere information, and described second interfere information comprises the information of interference source and interference strength and small-sized honeycomb node bandwidth on demand; Described second acquisition module is used for according to described second interfere information, the interference source to be adjusted that acquisition need be carried out, and described interference source to be adjusted comprises small-sized honeycomb node and/or MNB; Described sending module is used for the harmony messages result of interference source to be adjusted is sent to interference source to be adjusted and/or disturbed source;
Adjusting device is used for adjusting according to described adjustment information the System Operation parameter of interference source to be adjusted, to reduce base station interference.
Compared with prior art, the present invention has the following advantages:
The embodiment of the invention is by receiving the first interfere information information, and described first interfere information comes from the interference strength of macro base station MNB and the information of small-sized honeycomb node bandwidth on demand; And, obtain the annoyance level of MNB downlink data to the small-sized honeycomb node according to described System Operation parameter first interfere information; The last System Operation parameter of adjusting MNB according to described annoyance level.The present invention will adjust the bandwidth resources or the transmitting power of small-sized honeycomb node in the prior art, change into the System Operation parameter of adjusting MNB, described System Operation parameter comprises bandwidth and/or transmitting power, because do not adjust the small-sized honeycomb node, so can not increase the coverage of small-sized honeycomb node, therefore, can not influence in this zone down-link performance to MNB, can not reduce MNB in this regional coverage yet, further, the embodiment of the invention can not adjusted under the situation of the small-sized honeycomb node down transmitting power upper limit, and higher data rate is provided.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the method embodiment one of minimizing base station interference of the present invention;
Fig. 2 is the structured flowchart of the device embodiment one of minimizing base station interference of the present invention;
Fig. 3 is the flow chart of the method embodiment two of minimizing base station interference of the present invention;
Fig. 4 is the structured flowchart of the centralized control entity of minimizing base station interference of the present invention;
Fig. 5 is the structural representation of the system embodiment of minimizing base station interference of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
With reference to figure 1, in the embodiment of the invention one, realize that the method that the embodiment of the invention one is provided can may further comprise the steps:
Step 101: receive first interfere information, described first interfere information comprises the interference strength that comes from macro base station MNB and the relevant information of small-sized honeycomb node bandwidth on demand;
In this step, MNB at first receives first interfere information, described first interfere information can comprise the interference strength that comes from macro base station MNB and the information of small-sized honeycomb node bandwidth on demand, the interference strength of described macro base station MNB is used to show the annoyance level of MNB to the small-sized honeycomb node, in this step, this numerical value is coarseness, can be the interference strength of MNB pilot tone to the small-sized honeycomb node; The relevant information of described request bandwidth offers the relevant information about bandwidth on demand of MNB for the small-sized honeycomb node, can comprise that the small-sized honeycomb node sends the data volume in the buffering area, the bandwidth or the data throughout of demand, in practice, data volume in the transmission buffering area is the bandwidth of demand, also is data throughout; If exist the downlink throughput capacity under the strong jamming situation too low at the small-sized honeycomb node, can not support the current operation amount, so the small-sized honeycomb node be to the MNB bandwidth on demand;
Wherein, described first interfere information can also comprise: the downlink throughput capacity information of the bandwidth information of small-sized honeycomb node, descending interference statistic information and/or small-sized honeycomb node, the bandwidth information of described small-sized honeycomb node refers to the frequency range at small-sized honeycomb node work place, when the small-sized honeycomb node has only a working band, need not to send bandwidth information to MNB; Described descending interference statistic information can be the interference statistics amount of a period of time about whole each Resource Block of working frequency range of small-sized honeycomb node, for example Physical Resource Block (Physical Resource Block, PRB); Also can be the down receiving signal statistic, for example, the average SINR of each Resource Block in a period of time can so that MNB determines the interference whether interference of small-sized honeycomb node self causes; Described downlink throughput capacity information refers to the average downlink throughput capacity in small-sized honeycomb node a period of time;
Need to prove, in the present embodiment, MNB can receive first interfere information by X2 interface or core net CN, and, MNB is when receiving first interfere information, can it be the cycle with some time values, for example 10 minutes, periodically receive first interfere information that the small-sized honeycomb node reports, also can be that the small-sized honeycomb Node Events sends first interfere information to MNB with triggering, described Event triggered can be measured the strong and bandwidth that use of the annoyance level of MNB for, small-sized honeycomb node can not satisfy service traffics;
Step 102:, obtain the annoyance level of MNB downstream signal to the small-sized honeycomb node according to described first interfere information;
MNB is based on the particular content of first interfere information that receives, again in conjunction with the operating position of self Physical Resource Block, can obtain the descending annoyance level that cause of MNB downlink data transmission to the small-sized honeycomb node, need to prove, the annoyance level that obtains in this step is fine-grained, can comprise that the pilot tone of MNB own to the interference that the small-sized honeycomb node produces, can also comprise that MNB issues the interference that user data causes the small-sized honeycomb node; Wherein, described annoyance level can adopt different quantization levels, for example annoyance level for strong or be a little less than;
Step 103: the System Operation parameter of adjusting MNB according to described annoyance level.
MNB is according to the annoyance level that obtains in the step 102, can learn when the suffered strong jamming of small-sized honeycomb node be MNB issue that user data causes as a result the time, MNB is again according to the bandwidth usage of small-sized honeycomb node, and the information of MNB self, for example, utilized bandwidth, service traffics and QoS (Quality of Service, QoS) etc., adjust the System Operation parameter of MNB, wherein System Operation parameter can be for bandwidth or/and down transmitting power.The small-sized honeycomb node can be HNB, femto-cell, picocell pico cell or the evolution base station HeNB of family in practice.
Need to prove, when adjusting bandwidth, can be according to described annoyance level, on the frequency range of small-sized honeycomb node place, MNB stops the use to the bandwidth resources of corresponding band, so that the small-sized honeycomb node can utilize this part bandwidth resources fully, wherein, the granularity of bandwidth resources is carrier wave, temporal frequency piece or subcarrier; And MNB is the withdraw from service bandwidth resources, promptly are the resources of being monopolized by the small-sized honeycomb node, and in follow-up time, MNB can not use these bandwidth resources; And not giving the resource that the small-sized honeycomb node is monopolized, MNB can continue in the follow-up time and the small-sized honeycomb nodes sharing is used.
When adjusting the down transmitting power of MNB, also can be on the frequency range of small-sized honeycomb node place, reduce the down transmitting power of MNB respective bandwidth resource, so that the total throughput of MNB and small-sized honeycomb node surpasses the total throughout certain value before adjusting, and the QoS to MNB does not have big influence, need to prove, when system expects the down transmitting power of adjusting MNB and will have influence on its service quality, can not adjust the down transmitting power of MNB according to actual conditions.
Corresponding with the method that the embodiment of the invention one is provided, referring to Fig. 2, the embodiment of the invention also provides a kind of device that reduces base station interference, and this device comprises:
In the present embodiment, described first receiver module is when receiving first interfere information, can receive first interfere information that the small-sized honeycomb node sends to MNB by X2 interface or core net CN, wherein, it is the cycle with a regular time that first receiver module can receive the small-sized honeycomb node, for example 10 minutes, first interfere information that periodically reports, also can, receive the small-sized honeycomb Node Events and trigger first interfere information that ground sends, wherein, described incident can to go out MNB ground annoyance level strong for the small-sized honeycomb node detection, and the bandwidth of using can not satisfy service traffics;
Need to prove, described first interfere information can also comprise: the downlink throughput capacity information of the bandwidth information of small-sized honeycomb node, descending interference statistic information and/or small-sized honeycomb node, the bandwidth information of described small-sized honeycomb node refers to the frequency range at small-sized honeycomb node work place, when the small-sized honeycomb node has only a working band, need not to send bandwidth information to MNB; Described descending interference statistic information can be a period of time about each Resource Block of the whole working frequency range of small-sized honeycomb node, Physical Resource Block (Physical Resource Block, interference statistics amount PRB) for example; Also can be the statistic of down receiving signal, for example, the average SINR of each Resource Block in a period of time can so that MNB determines the interference whether interference of small-sized honeycomb node self causes; Described downlink throughput capacity information refers to the downlink throughput capacity that the small-sized honeycomb node is current;
When obtaining the MNB downlink data to the annoyance level of small-sized honeycomb node, MNB can be according to interference strength that comes from MNB in described first interfere information and the required information of small-sized honeycomb node bandwidth on demand, and in conjunction with the PRB operating position of MNB self, can judge whether draw is the strong jamming degree that the descending transmission data of MNB have caused the small-sized honeycomb node, annoyance level be by force or a little less than;
For example, if in the descending interference statistic information of small-sized honeycomb node, there is strong jamming on some descending PRB, and MNB is very high or scheduling times is more to the frequency of utilization of these descending PRB, and small-sized honeycomb node and MNB close together, think that promptly interference strength is big, or MNB can produce strong jamming to the small-sized honeycomb node, at this moment, if MNB reduces the use to these descending PRB, will reduce descending interference, thereby improve the channel quality of small-sized honeycomb node downlink data the small-sized honeycomb node;
Adjusting module 203 is used for the System Operation parameter according to described annoyance level adjustment MNB;
Adjusting module is adjusted the System Operation parameter of MNB according to the annoyance level of small-sized honeycomb node, and described System Operation parameter can comprise bandwidth or/and down transmitting power, and wherein, described adjusting module specifically can comprise according to different adjustment contents:
Stop submodule, be used for, on the frequency range of small-sized honeycomb node place, stop use MNB corresponding band bandwidth resources according to described annoyance level;
Wherein, stopping submodule can be according to described annoyance level, on the frequency range of small-sized honeycomb node place, stop use to MNB corresponding band bandwidth resources, power according to annoyance level, the data volume that stops the bandwidth resources that submodule can stop can be different, and the present invention does not limit the data of bandwidth resources, and this does not influence realization of the present invention; Need to prove, be carrier wave, temporal frequency piece or subcarrier in the minimum particle size of the bandwidth resources of MNB;
Perhaps, described adjusting module specifically also can comprise:
Adjust submodule, be used for, adjust the down transmitting power of MNB respective bandwidth resource in small-sized honeycomb node place frequency range;
Comparison sub-module, the total throughout of MNB and small-sized honeycomb node before being used for relatively adjusting is with the size of the total throughout of estimating, to guarantee the adjusting back or to estimate that adjusted throughput is greater than the total throughout before adjusting.
Be understandable that, also can improve the disturbed condition of base station by the down transmitting power of adjusting MNB, described adjustment submodule can reduce the down transmitting power of MNB corresponding band, make under the situation of the upper limit that does not improve small-sized honeycomb node down transmitting power, guaranteed the dynamic coverage of MNB, the total throughout of MNB and small-sized honeycomb node before described comparison sub-module is used for relatively adjusting, size with the total throughout of estimating, to guarantee to have reduced the total throughout behind the down transmitting power, it promptly is the throughput sum of MNB and small-sized honeycomb node, greater than the total throughout before not reducing, in actual applications, if the result that comparison sub-module relatively draws, the total throughout that is expectation so just need not MNB is adjusted less than the total throughout before adjusting.
Wherein, described adjustment submodule and stop submodule and can also work simultaneously promptly is not only the bandwidth resources of MNB to be given the small-sized honeycomb node to use, and also reduces the down transmitting power of corresponding band among the MNB; Certainly, be understandable that, the criterion that two modules are worked simultaneously still is to guarantee to have reduced the total throughout behind the down transmitting power, it promptly is the throughput sum of MNB and small-sized honeycomb node, greater than the total throughout before not reducing, in the present embodiment, increased the entire throughput of system, and what influence MNB has not almost been had.
With reference to figure 3, show a kind of method embodiment two that reduces base station interference, in the present embodiment, newly-increased centralized control entity can be integrated in other nodes, also can independently be provided with, in the embodiment of the invention two, realize that the method that the embodiment of the invention two is provided can may further comprise the steps:
Step 301: centralized control entity receives second interfere information, and described second interfere information comprises: the relevant information of interference source and interference strength thereof and small-sized honeycomb node bandwidth on demand;
Under some scene, for example, the descending descending interference that mainly is subjected to from other small-sized honeycomb nodes of small-sized honeycomb node, cause the very poor result of down channel quality, at this moment, can not realize the improvement of disturbance regime once described method by the embodiment of the invention, therefore, increased centralized control entity newly in the embodiment of the invention two, the small-sized honeycomb node can be sent to second interfere information on the centralized control entity, carries out unified scheduling by centralized control entity;
Need to prove that in the present embodiment, second interfere information includes interference source information and each interference source interference strength to the small-sized honeycomb node, wherein, described interference source can be MNB and small-sized honeycomb node, for example, and other HNB or femto-cell; And the interference strength of each interference source correspondence, the interference strength here remains coarseness; The described interference strength of present embodiment step 301 still is that the pilot tone of MNB or small-sized honeycomb node is to the interference of small-sized honeycomb node;
Wherein, be understandable that, when interference source is the small-sized honeycomb node, centralized control entity is when receiving second interfere information, receive mode can also can be second interfere information that the small-sized honeycomb Node Events reports with triggering for receiving second interfere information that each small-sized honeycomb node periodically reports; When interference source is MNB, in second interfere information that centralized control entity receives, comprise that also MNB sends the schedule information of Physical Resource Block, and the bandwidth information of MNB; Wherein, MNB can periodically report the use information of Physical Resource Block to centralized control entity; Perhaps send solicited message by centralized control entity to MNB, request MNB sends the operating position of own resource, and MNB sends the use information of Physical Resource Block according to the solicited message that receives, and the bandwidth information that also sends self is to centralized control entity;
Preferably, described second interfere information can also comprise, the bandwidth information of small-sized honeycomb node, bandwidth information, interference source and interference strength thereof according to wherein small-sized honeycomb node, the information of small-sized honeycomb node bandwidth on demand can be judged interference source to be adjusted for next step centralized control entity and prepare;
Step 302: according to described second interfere information, the interference source to be adjusted that acquisition need be adjusted;
Centralized control entity is based on the bandwidth information of each small-sized honeycomb node, interference strength, the descending interference statistics situation of each small-sized honeycomb node, current downlink throughput capacity information, the needed relevant information of small-sized honeycomb node bandwidth on demand, for example bandwidth or throughput etc., and the relevant information of MNB, for example, the use information of Physical Resource Block, bandwidth information are judged interference source to be adjusted, wherein, interference source to be adjusted can be small-sized honeycomb node or MNB;
Need to prove, in step 301, centralized control entity has received interference source and interference strength, in practice, almost each HNB or MNB can produce interference more or less, but in the present embodiment, only therefrom judge one or several interference source of interference strength maximum and adjust, so just can further save cost, also reach the purpose of the embodiment of the invention simultaneously; In practice, for some interference source, if its down transmitting power is reduced, perhaps abdicate bandwidth resources, will influence the entire throughput of system, so system can be according to the bandwidth usage of each interference source self when judging, only get wherein a part as interference source to be adjusted;
Step 303: adjust the System Operation parameter of interference source to be adjusted, to reduce base station interference.
Centralized control entity is judged after the interference source to be adjusted, just the harmony messages result is sent to the interference source that needs adjustment, wherein, described harmony messages result can comprise, adjust bandwidth resources or down transmitting power, perhaps the both needs to adjust, and the adjustment quantity that draws according to actual conditions.Described step 303 has different execution modes in practice, and is specific as follows:
A1: when interference source to be adjusted is MNB, adjust bandwidth or the transmitting power of MNB according to described annoyance level;
When interference source to be adjusted was MNB, first kind of execution mode was bandwidth or the transmitting power of adjusting MNB according to described annoyance level; Wherein, adjust the execution of bandwidth or adjustment transmitting power, in embodiment one, introduce in detail, do not repeat them here;
B1: when interference source to be adjusted is the small-sized honeycomb node, bandwidth resources and/or transmitting power between the coordinates interference small-sized honeycomb node;
When interference source to be adjusted was the small-sized honeycomb node, second kind of execution mode was to adjust the bandwidth of small-sized honeycomb node or/and transmitting power according to described annoyance level; Wherein, adjust the execution of bandwidth or adjustment transmitting power, in embodiment one, introduce in detail, do not repeat them here;
C1: when interference source to be adjusted is MNB and small-sized honeycomb node, according to bandwidth and/or the down transmitting power of described annoyance level adjustment MNB, and bandwidth resources and/or down transmitting power between the coordinates interference small-sized honeycomb node;
When interference source to be adjusted is MNB and small-sized honeycomb node, the third execution mode is bandwidth and/or a transmitting power of adjusting MNB and small-sized honeycomb node according to described annoyance level, and disturbs coordination bandwidth resources and/or transmitting power between the small-sized honeycomb node at each; Wherein, adjust the execution of bandwidth or adjustment transmitting power, in embodiment one, introduce in detail, do not repeat them here.
In the present embodiment, introduced centralized control entity, by small-sized honeycomb node and MNB periodically or Event triggered ground report second interfere information to this centralized control entity, centralized control entity is sent to interference source to be adjusted with the harmony messages result, can so that the small-sized honeycomb node with between MNB, and the internodal interference of small-sized honeycomb all is reduced, and can obtain the maximum gain of network throughput this moment.
Corresponding with the inventive method embodiment two, referring to Fig. 4, the embodiment of the invention also provides a kind of centralized control entity, and this centralized control entity can comprise:
Wherein, need to prove that described second receiver module when receiving the reporting information of MNB, can periodically be uploaded the relevant information of self for MNB, can also send request, the s own situation of acquisition request MNB to MNB for centralized control entity; The embodiment of the invention does not limit the reception information mode of second receiver module, and this does not influence the realization of the embodiment of the invention;
Second acquisition module wherein according to second interfere information that described second receiver module receives, can obtain the harmony messages result of interference source to be adjusted, and for example, which or those interference sources should be adjusted, adjustment amount be what etc.;
Sending module 403 is used for the harmony messages result of interference source to be adjusted is sent to interference source to be adjusted.
Described sending module, the harmony messages result of the interference source to be adjusted that described second acquisition module can be got access to is sent to corresponding interference source and disturbed source, makes interference source to be adjusted can carry out the adjustment of bandwidth resources or down transmitting power according to information.
In the present embodiment, need to prove that in network, centralized control entity can exist a plurality of, can carry out the mutual of information according to procotol between the therefore different centralized control entity; And can carry out information interaction with other network entities.
Corresponding with the method and apparatus that the invention described above embodiment is provided, with reference to figure 5, the embodiment of the invention also provides a kind of system that reduces base station interference, and this system can comprise:
Centralized control entity 501, described centralized control entity comprises: second receiver module, second acquisition module and sending module, described second receiver module is used for receiving system operating parameters second interfere information, and described System Operation parameter second interfere information comprises the relevant information of interference source and interference strength and small-sized honeycomb node bandwidth on demand; Described second acquisition module is used for according to described second interfere information, the harmony messages result of the interference source to be adjusted that acquisition need be adjusted, and described interference source to be adjusted comprises small-sized honeycomb node and/or MNB; Described sending module is used for the harmony messages result is sent to interference source to be adjusted and/or disturbed source;
Adjusting device 502 is used for according to described harmony messages result the System Operation parameter of interference source to be adjusted being adjusted, to reduce base station interference.
Need to prove, because it is very detailed that the method and apparatus of aforementioned minimizing base station interference is introduced, so not detailed part of the system embodiment of described minimizing base station interference, can no longer system be described in detail at this referring to aforementioned to the method that reduces base station interference, the description of device embodiment.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
More than a kind of method, device and system that reduces base station interference that the embodiment of the invention provided is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used to help to understand the method and the thought thereof of the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the thought of the embodiment of the invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (25)
1, a kind of method that reduces base station interference is characterized in that, comprising:
Receive first interfere information, described first interfere information comprises the interference strength that comes from macro base station MNB and the relevant information of small-sized honeycomb node bandwidth on demand;
According to described first interfere information, obtain the annoyance level of MNB downstream signal to the small-sized honeycomb node;
Adjust the System Operation parameter of MNB according to described annoyance level.
2, method according to claim 1 is characterized in that, described reception first interfere information specifically comprises:
With a time value is the cycle, continues to receive first interfere information.
3, method according to claim 1 is characterized in that, described reception first interfere information specifically comprises:
Receive the small-sized honeycomb Node Events and trigger first interfere information that ground sends to MNB.
4, method according to claim 1 is characterized in that, the System Operation parameter that the described annoyance level of described foundation is adjusted MNB specifically comprises:
According to described annoyance level, on the frequency range of small-sized honeycomb node place, adjust the down transmitting power of corresponding MNB resource, so that the total throughout of adjusting the back or estimating adjusted MNB and small-sized honeycomb node is greater than adjusting total throughout before.
5, method according to claim 1 is characterized in that, the System Operation parameter that the described annoyance level of described foundation is adjusted MNB specifically comprises:
According to described annoyance level, on the frequency range of small-sized honeycomb node place, MNB stops the use to the respective bandwidth resource, and wherein, the granularity of bandwidth resources is carrier wave, temporal frequency piece or subcarrier.
6, method according to claim 1 is characterized in that, described reception first interfere information specifically comprises:
Receive first interfere information by X2 interface or core net CN.
According to each described method of claim 1-6, it is characterized in that 7, described small-sized honeycomb node is Home eNodeB HNB, femtocell formula femto-cell base station, picocell picocell or the evolution base station HeNB of family.
8, method according to claim 7 is characterized in that, described first interfere information can also comprise: the downlink throughput capacity information of the bandwidth information of small-sized honeycomb node, descending interference statistic information and/or small-sized honeycomb node.
9, method according to claim 1 is characterized in that, the relevant information of described small-sized honeycomb node bandwidth on demand comprises: the small-sized honeycomb node sends the data volume in the buffering area, the bandwidth or the data throughout of demand.
10, a kind of device that reduces base station interference is characterized in that, comprising:
First receiver module is used to receive first interfere information, and described first interfere information comprises the interference strength that comes from macro base station MNB and the relevant information of small-sized honeycomb node bandwidth on demand;
First acquisition module is used for according to described first interfere information, obtains the annoyance level of MNB downstream signal to the small-sized honeycomb node;
Adjusting module is used for the System Operation parameter according to described annoyance level adjustment MNB.
11, device according to claim 10 is characterized in that, described adjusting module specifically comprises:
Stop submodule, be used for according to described annoyance level, on the frequency range of small-sized honeycomb node place, MNB stops the use to the respective bandwidth resource.
12, device according to claim 10 is characterized in that, described adjusting module specifically comprises:
Adjust submodule, be used for, adjust the down transmitting power of MNB corresponding band in small-sized honeycomb node place frequency range;
Comparison sub-module, the total throughout of MNB and small-sized honeycomb node before being used for relatively adjusting is with the size of the total throughout of estimating, to guarantee the adjusting back or to estimate that adjusted throughput is greater than the total throughout before adjusting.
13, a kind of method that reduces base station interference is characterized in that, comprising:
Centralized control entity receives second interfere information, and described second interfere information comprises the relevant information of interference source and interference strength and small-sized honeycomb node bandwidth on demand;
According to described second interfere information, the interference source to be adjusted that acquisition need be adjusted;
Adjust the System Operation parameter of interference source to be adjusted, to reduce base station interference.
14, method according to claim 13 is characterized in that, described interference source is the small-sized honeycomb node, and described centralized control entity receives second interfere information and comprises:
Centralized control entity receives second interfere information that the small-sized honeycomb node periodically sends.
15, method according to claim 13 is characterized in that, described interference source is the small-sized honeycomb node, and described centralized control entity receives second interfere information and comprises:
Centralized control entity receives the small-sized honeycomb Node Events and triggers second interfere information that ground sends.
16, method according to claim 13 is characterized in that, described interference source is MNB, and described centralized control entity receives second interfere information and comprises:
The schedule information of the Physical Resource Block that centralized control entity reception MNB periodically sends.
17, method according to claim 13 is characterized in that, described interference source is MNB, and described centralized control entity receives second interfere information and comprises:
Receive the schedule information of MNB according to the Physical Resource Block of the request message transmission of centralized control entity.
18, method according to claim 13 is characterized in that, described centralized control entity receives second interfere information and comprises:
Centralized control entity receives the bandwidth information that MNB sends.
19, method according to claim 13 is characterized in that, the System Operation parameter of described adjustment interference source to be adjusted specifically comprises:
When interference source to be adjusted is MNB, adjust the bandwidth of MNB or/and transmitting power according to described annoyance level.
20, method according to claim 13 is characterized in that, the parameter of described adjustment interference source to be adjusted specifically comprises:
When interference source to be adjusted is the small-sized honeycomb node, bandwidth resources and/or down transmitting power between the coordinates interference small-sized honeycomb node.
21, method according to claim 13 is characterized in that, the parameter of described adjustment interference source to be adjusted specifically comprises:
When interference source to be adjusted is MNB and small-sized honeycomb node, according to bandwidth and/or the down transmitting power of described annoyance level adjustment MNB, and bandwidth resources and/or down transmitting power between the coordinates interference small-sized honeycomb node.
22, method according to claim 13 is characterized in that, described second interfere information can also comprise: the downlink throughput capacity information of the bandwidth information of small-sized honeycomb node, descending interference statistic information, disturbed source and/or small-sized honeycomb node.
23, method according to claim 13 is characterized in that, the relevant information of described small-sized honeycomb node bandwidth on demand comprises: the small-sized honeycomb node sends the data volume in the buffering area, the bandwidth and/or the data throughout of demand.
24, a kind of centralized control entity is characterized in that, can independently be provided with, and also can be arranged in the network node, comprising:
Second receiver module is used to receive second interfere information, and described second interfere information comprises: the information of interference source and interference strength thereof and small-sized honeycomb node bandwidth on demand;
Second acquisition module is used for according to described second interfere information harmony messages result of the interference source to be adjusted that acquisition need be adjusted;
Sending module is used for the harmony messages result of interference source to be adjusted is sent to interference source to be adjusted and/or disturbed source.
25, a kind of system that reduces base station interference is characterized in that, comprising:
Centralized control entity, described centralized control entity comprises: second receiver module, second acquisition module and sending module, described second receiver module is used to receive second interfere information, and described second interfere information comprises the information of interference source and interference strength and small-sized honeycomb node bandwidth on demand; Described second acquisition module is used for according to described second interfere information, the interference source to be adjusted that acquisition need be carried out, and described interference source to be adjusted comprises small-sized honeycomb node and/or MNB; Described sending module is used for the harmony messages result of interference source to be adjusted is sent to interference source to be adjusted and/or disturbed source;
Adjusting device is used for adjusting according to described adjustment information the System Operation parameter of interference source to be adjusted, to reduce base station interference.
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| CN2008100423354A CN101662775B (en) | 2008-08-27 | 2008-08-27 | Method, device and system for reducing base station interference |
| PCT/CN2009/072351 WO2010022614A1 (en) | 2008-08-27 | 2009-06-19 | Method, device and system for reducing the interference of a base |
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| CN2008100423354A CN101662775B (en) | 2008-08-27 | 2008-08-27 | Method, device and system for reducing base station interference |
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