CN102469502A - Fractional frequency reuse (FFR)-based congestion control method and system - Google Patents
Fractional frequency reuse (FFR)-based congestion control method and system Download PDFInfo
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- CN102469502A CN102469502A CN2010105312035A CN201010531203A CN102469502A CN 102469502 A CN102469502 A CN 102469502A CN 2010105312035 A CN2010105312035 A CN 2010105312035A CN 201010531203 A CN201010531203 A CN 201010531203A CN 102469502 A CN102469502 A CN 102469502A
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Abstract
The invention discloses a fractional frequency reuse (FFR)-based congestion control method and an FFR-based congestion control system. The FFR-based congestion control method comprises the following steps of: comparing an inner ring resource parameter and an outer ring resource parameter with a congestion level threshold respectively, wherein the inner ring resource parameter is used for instructing the bandwidth resource utilization condition of an inner ring, and the outer ring resource parameter is used for instructing the bandwidth resource utilization condition of an outer ring; determining the congestion levels of the inner ring and the outer ring according to comparison results; and performing congestion control processing on the inner ring according to the congestion level of the inner ring, and/or performing congestion control processing on the outer ring according to the congestion level of the outer ring. By the method and the system, the effects of fully utilizing the whole spectrum resources of the system and preventing the quality of service (QoS) of a wireless service from being reduced are achieved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of jamming control method and system based on FFR (FractionalFrequency Reuse, partial frequency multiplexing).
Background technology
In wireless communication system, when the load of certain sector is very big, may cause the QoS (Qualiti of Service, traffic stream service quality) of respective sectors wireless traffic to descend.For the communication system that adopts the FFR networking, ring resource and outer shroud resource in system resource is divided into are encircled in the sector and/or the load of outer shroud when very big, will get into the inner and outer ring congestion state.If after getting into congestion state, in time do not take appropriate measures and remove or to alleviate inner and outer ring congested, will cause the frequency spectrum resource utilization rate of entire system to descend, and then cause the QoS of wireless traffic to descend.
At present; For WiMAX (the Worldwide Interoperabilityfor Microwave Access that adopts the FFR networking; Micro-wave access global inter communication) communication system, IEEE 802.16e standard do not provide and solve the sector inner and outer ring excessive entering congestion state of loading, and inner and outer ring is removed congested measure after getting into congestion state; Thereby when the generation inner and outer ring is congested; Can't effectively judge and remove, and then can't make the frequency spectrum resource utilization rate of entire system reach maximization, avoid the decline of wireless traffic QoS.
Summary of the invention
Main purpose of the present invention is to provide a kind of jamming control method and system based on FFR; To solve at least in the above-mentioned correlation technique when inner and outer ring taking place when congested; Can't effectively judge and remove; And then can't make the frequency spectrum resource utilization rate of entire system reach maximization, avoid the problem of the decline of wireless traffic QoS.
According to an aspect of the present invention; A kind of jamming control method based on FFR is provided; Comprise: respectively interior ring resource parameters and outer shroud resource parameters and congestion level thresholding are compared; Should be used to indicate the bandwidth resources of interior ring to utilize situation by interior ring resource parameters, this outer shroud resource parameters be used to indicate the bandwidth resources of outer shroud to utilize situation; Judge the congestion level of interior ring and outer shroud according to comparative result; Carry out congested control and treatment according to the internal ring of the congestion level of interior ring, and/or, according to the congestion level of outer shroud outer shroud is carried out congested control and treatment.
According to a further aspect in the invention; A kind of congestion control system based on FFR is provided; Comprise: congestion judging module; Be used for respectively interior ring resource parameters and outer shroud resource parameters and congestion level thresholding are compared, bandwidth resources of ring were utilized situation in ring resource parameters was used to indicate in this, and this outer shroud resource parameters is used to indicate the bandwidth resources of outer shroud to utilize situation; Judge the congestion level of interior ring and outer shroud according to comparative result; Congested control treatment module is used for carrying out congested control and treatment according to the internal ring of the congestion level of interior ring, and/or, according to the congestion level of outer shroud outer shroud is carried out congested control and treatment.
Through the present invention; Employing compares interior ring resource parameters and outer shroud resource parameters respectively with the congestion level thresholding, and then judges the congestion level of interior ring and outer shroud, and carries out corresponding congested control and treatment according to this congestion level; Solved in the correlation technique when inner and outer ring taking place when congested; Can't effectively judge and remove, and then can't make the frequency spectrum resource utilization rate of entire system reach maximization, avoid the problem of the decline of wireless traffic QoS; And then reached the frequency spectrum resource utilization rate that makes full use of entire system, the effect of avoiding wireless traffic QoS to descend.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of steps according to a kind of jamming control method based on FFR of the embodiment of the invention one;
Fig. 2 is the flow chart of steps according to a kind of jamming control method based on FFR of the embodiment of the invention two;
Fig. 3 is the flow chart of steps according to a kind of jamming control method based on FFR of the embodiment of the invention three;
Fig. 4 is the flow chart of steps based on the congested control and treatment of interior ring among the jamming control method embodiment of FFR shown in Figure 3;
Fig. 5 is the flow chart of steps based on the congested control and treatment of outer shroud among the jamming control method embodiment of FFR shown in Figure 3;
Fig. 6 is the structured flowchart according to a kind of congestion control system based on FFR of the embodiment of the invention four;
Fig. 7 is the structural representation according to a kind of congestion control system based on FFR of the embodiment of the invention five.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
In order to make full use of the air interface bandwidth resource, the demand of the various customer services of simultaneous adaptation, the WiMAX system is following several types for Business Stream has designed: fixed-bandwidth professional (Unsolicited Grant Service, UGS); Real-time polling service (Real-time PollingService, rtPS); Non-real-time polling service (Non-real-time Polling Service, nrtPS); Best-Effort service (Best Effort, BE).
With reference to Fig. 1, show flow chart of steps according to a kind of jamming control method based on FFR of the embodiment of the invention one, may further comprise the steps:
Step S102: system compares interior ring resource parameters and outer shroud resource parameters and congestion level thresholding respectively;
Wherein, the bandwidth resources of ring were utilized situation in interior ring resource parameters was used to indicate, and the outer shroud resource parameters is used to indicate the bandwidth resources of outer shroud to utilize situation.
The congestion level thresholding can comprise a plurality of, the Congestion Level SPCC of ring or outer shroud in the indication.The congestion level thresholding can comprise from low to high: slight congestion threshold, moderate congestion threshold and heavy congestion thresholding.Certainly, those skilled in the art can suitably be provided with above parameter according to actual needs, and the present invention does not limit this.
Step S104: the congestion level of ring and outer shroud in system is judged according to comparative result;
Congestion level can comprise from low to high: slightly congested, moderate is congested and heavy congestion.Those skilled in the art can suitably be provided with above parameter according to actual needs, and the present invention does not limit this.
Step S106: system internally encircles according to the congestion level of interior ring and carries out congested control and treatment, and/or, according to the congestion level of outer shroud outer shroud is carried out congested control and treatment.
When interior environment-development was living congested, system can internally encircle according to the congestion level of interior ring carry out congested control and treatment; When outer shroud takes place when congested, system can carry out congested control and treatment to outer shroud according to the congestion level of outer shroud; When interior ring and outer shroud take place when congested simultaneously, internally ring and outer shroud carry out congested control and treatment respectively according to the congestion level of interior ring and outer shroud respectively in system.
In the correlation technique, when ring or outer shroud are congested in taking place, can't carry out inner and outer ring congested effective judgement and releasing, and then can't make the frequency spectrum resource utilization rate of entire system reach maximization, avoid the decline of wireless traffic QoS.Pass through present embodiment; Employing compares interior ring resource parameters and outer shroud resource parameters respectively with the congestion level thresholding, and then judges the congestion level of interior ring and outer shroud, and carries out corresponding congested control and treatment according to this congestion level; Solved in the correlation technique when inner and outer ring taking place when congested; Can't effectively judge and remove, and then can't make the frequency spectrum resource utilization rate of entire system reach maximization, avoid the problem of the decline of wireless traffic QoS; And then reached the frequency spectrum resource utilization rate that makes full use of entire system, the effect of avoiding wireless traffic QoS to descend.
With reference to Fig. 2, show flow chart of steps according to a kind of jamming control method based on FFR of the embodiment of the invention two, may further comprise the steps:
Step S202: system obtains the bandwidth resources of inner and outer ring and utilizes situation.
In this step, the bandwidth resources of ring were utilized situation in system can obtain through interior ring resource parameters, obtained the bandwidth resources of outer shroud through the outer shroud resource parameters and utilized situation.
Step S204: system compares to determine (comprising slight congestion level thresholding, moderate congestion level thresholding, heavy congestion rank thresholding) congestion level of inner and outer ring according to the congestion level thresholding of OMC (Operations and Maintenance Center, operation maintenance center) configuration; If it is congested that interior environment-development is given birth to, then execution in step S206; If it is congested that outer shroud takes place, then execution in step S208; If it is congested that inner and outer ring all takes place, then first execution in step S206, execution in step S208 then.
Step S206: the congested control and treatment of ring in system carries out.
When system encircled congested control and treatment in carrying out, ring congestion control policy in can presetting carried out the congested control and treatment of interior ring according to interior ring congestion control policy.In the ring congestion control policy can for:
If heavy congestion has been given birth in interior environment-development; Then divide two kinds of situation to handle; If interior ring causes for dead limit bandwidth usage surpasses the heavy congestion thresholding; And the congestion level of outer shroud is congested (not comprising that moderate is congested) below the moderate, and a minimum non-BE user of ring isolation switches to outer shroud in then selecting; If for the real time business packet loss causes, the minimum and non-BE user that have a real time business of ring isolation switches to outer shroud in then selecting;
If outer shroud generation moderate above (comprising moderate) is congested, tears chain in a conventional manner open and handle;
The overtime moderate that causes is congested if the BE scheduling is given birth in interior environment-development, and it is congested to judge whether outer shroud the moderate that BE causes takes place, if outer shroud is not congested, then the pure BE user of interior ring with descending isolation minimum switches to outer shroud; If do not have pure BE user, then be left intact.
If interior environment-development life and death limit bandwidth usage is congested above the moderate that the moderate congestion threshold causes; No matter whether outer shroud is congested; The non-BE user of interior ring that descending isolation is minimum (just being non-BE user as long as comprise the user of non-BE connection) switches to outer shroud, and need not admit control to outer shroud this moment.
If interior ring congestion state then is left intact for slight congested or do not have congestedly.
Need to prove, for preventing ping-pong, carry out above in during the congested control and treatment of ring, need this user of record owing to congested control is switched away, certain hour (such as 20s) is interior can not apply for once more that switching gets back to interior ring.
Step S208: system carries out the congested control and treatment of outer shroud.
System can preset the outer shroud congestion control policy when carrying out the congested control and treatment of outer shroud, carry out the congested control and treatment of outer shroud according to the outer shroud congestion control policy.The outer shroud congestion control policy can for:
If outer shroud generation heavy congestion, and interior ring that moderate above (comprising moderate) does not take place is congested, then divide two kinds of situation to handle:, then to select a non-BE user to switch to interior ring from outer shroud if cause for dead limit bandwidth usage surpasses the heavy congestion thresholding; If for the real time business packet loss causes, then select non-BE user to switch to interior ring with real time business;
If the outer shroud heavy congestion, interior ring resource is a moderate or congested more than the moderate, tears chain in a conventional manner open and handles;
The overtime moderate that causes is congested if the BE scheduling appears in outer shroud; And the moderate congested (promptly congested by the overtime moderate that causes of BE scheduling) of corresponded manner does not take place in interior ring; Then select a CINR (Carrier to Interference plus Noise Ratio from outer shroud; The ratio of carrier wave and interference and noise) the highest (for up FFR; Then select to satisfy the isolation threshold value, DLRSSI (DownLink Received Signal Strength Indication, the signal strength signal intensity indication of descending reception) is the highest) the user switch to interior ring; If interior ring is congested equally, then selects the minimum user of CINR to initiate the adjacent area and switch;
If it is congested that the moderate that dead limit bandwidth usage causes takes place outer shroud, and interior ring that the moderate of corresponded manner does not take place is congested, then select a non-BE user (just being non-BE user) to switch to interior ring as long as comprise the user that non-BE connects from outer shroud; If interior ring also takes place by the congested of corresponded manner, then from outer shroud, select a minimum user of CINR to initiate the adjacent area and switch.
If it is slightly congested that outer shroud takes place, then through the lifting signal power of eating dishes without rice or wine;
If outer shroud is not congested, then be left intact.
For preventing ping-pong, when carrying out the congested control and treatment of above outer shroud, need this user of record owing to congested control is switched away, can not apply for once more in the certain hour (such as 20s) switching getting back to outer shroud.
Present embodiment is judged the inner and outer ring congestion state according to the ring in the FFR and the bandwidth usage of outer shroud, carries out the congested control of inner and outer ring then, has guaranteed based on the wireless communication system throughput of FFR and good QoS, and has realized simple.
With reference to Fig. 3, show flow chart of steps according to a kind of jamming control method based on FFR of the embodiment of the invention three, may further comprise the steps:
Step S302: parameter is set.
Said parameter comprises: statistics time interval, congestion judging cycle, congestion level thresholding (comprising slight congestion threshold value, moderate congestion threshold value, heavy congestion threshold value), isolation threshold value, CINR threshold value.Need to prove that above-mentioned thresholding all is set to concrete threshold value, but in real process, those skilled in the art can be provided with suitably according to actual needs also, as be a value range, the present invention does not limit this.
Step S304: the utilization of resources situation of obtaining system's inner and outer ring in statistics time interval.
In this step; Can obtain the utilization of resources situation of inner and outer ring through interior ring resource parameters and outer shroud resource parameters; Wherein, the bandwidth resources of ring were utilized situation in interior ring resource parameters was used to indicate, and the outer shroud resource parameters is used to indicate the bandwidth resources of outer shroud to utilize situation.Interior ring resource parameters can be the QoS violation rate of interior ring, and the outer shroud resource parameters can be the QoS violation rate of outer shroud.Certainly, those skilled in the art can select or be provided with the inner and outer ring resource parameters of other suitable reflection inner and outer ring utilization of resources situation according to actual conditions in actual use.
Step S306: according to the parameter that is provided with and in statistics time interval the utilization of resources situation of system's inner and outer ring, judge the congestion level of inner and outer ring and congested type.
In the present embodiment; Use the congestion judging strategy to carry out the judgement of above-mentioned congestion level; The congestion judging strategy is: when the violation rate of QoS (violation rate that comprises dimensions such as bandwidth, time delay, packet loss) is less than or equal to slight congestion threshold value, then in ring or outer shroud do not have congested; The violation rate of QoS is during greater than slight congestion threshold value but less than moderate congestion threshold value, and is then congested for slightly; The violation rate of QoS then is that moderate is congested during greater than moderate congestion threshold value but less than the heavy congestion threshold value; The violation rate of QoS then is heavy congestion greater than the heavy congestion threshold value.
Step S308: congestion level and congestion type according to inner and outer ring are carried out the congested control and treatment of interior ring.
The concrete congested control and treatment of interior ring can steps flow chart as shown in Figure 4.
Step S310: congestion state and congestion type according to inner and outer ring are carried out the congested control and treatment of outer shroud.
The congested control and treatment of concrete outer shroud can steps flow chart as shown in Figure 5.
With reference to Fig. 4, show the flow chart of steps based on the congested control and treatment of interior ring among the jamming control method embodiment of FFR shown in Figure 3.Present embodiment is according to the congestion level of judging inner and outer ring, switch to through ring low priority traffice stream, interior ring user in removing method such as outer shroud remove or alleviate in encircle congestion situation.
Present embodiment may further comprise the steps:
Step S402: the congestion level of ring in judging, distinguish congested, slight congested, the no congested four kinds of congestion states of heavy congestion, moderate, carry out corresponding congested control and treatment respectively.If heavy congestion, then execution in step S404; If moderate is congested, execution in step S408 then; If slight congested or do not have congested, execution in step S406 then;
Step S404: ring judges whether outer shroud is the congested of moderate following (not comprising moderate) when the heavy congestion in the system, if, execution in step S412 then, otherwise, execution in step S410;
Step S406: be left intact, finish;
Step S408: judge whether it is that the overtime interior ring moderate that causes of BE scheduling is congested, if, execution in step S414 then; Otherwise, execution in step S416;
Step S410: if extremely limit bandwidth usage to surpass the interior ring heavy congestion that thresholding causes, ring user's low priority traffice stream in then forcing to discharge; If the interior ring heavy congestion that the real time business packet loss causes, ring user's real time business stream in then forcing to discharge.Limiting terminal inserts or switches and goes into interior ring simultaneously, finishes;
Step S412: if interior ring surpasses the interior ring heavy congestion that thresholding causes for dead limit bandwidth usage, and the congestion level of outer shroud is the congested of (not comprising moderate) below the moderate, and a minimum non-BE user of ring isolation switches to outer shroud in then selecting; If be the interior ring heavy congestion that the real time business packet loss causes, the minimum and non-BE user that have a real time business of ring isolation switches to outer shroud in then selecting, and finishes;
Step S414: judge whether outer shroud is that non-BE is congested, if, execution in step S418 then; Otherwise, finish;
Step S416: whether ring is that the moderate of extremely limitting bandwidth usage to cause is congested in judging, if, execution in step S420 then; Otherwise, finish;
Step S418: select the minimum interior ring BE user of an isolation to switch to outer shroud, finish;
Step S420: select the minimum non-BE user of interior ring of an isolation to switch to outer shroud, finish.
With reference to Fig. 5, show the flow chart of steps based on the congested control and treatment of outer shroud among the jamming control method embodiment of FFR shown in Figure 3.Present embodiment is according to the congestion level of judging inner and outer ring, through removing outer shroud ring low priority traffice stream, select the outer shroud user to switch to interior ring, select the outer shroud user to switch to the adjacent area, promoting method such as the signal power of eating dishes without rice or wine and remove or alleviate the outer shroud congestion situation.
Present embodiment may further comprise the steps:
Step S502: judge the congestion level of outer shroud, distinguish congested, slight congested, the no congested four kinds of congestion states of heavy congestion, moderate, carry out corresponding congested control and treatment respectively.If heavy congestion, then execution in step S504; If slightly congested, execution in step S506 then; If moderate is congested, execution in step S508 then; If do not have congested, execution in step S510 then;
Step S504: when system's outer shroud was heavy congestion, whether ring was the congested of (not comprising moderate) below the moderate in judging, if, execution in step S514 then, otherwise, execution in step S512;
Step S506: promote the signal power of eating dishes without rice or wine, finish;
Step S508: judge whether it is that the overtime outer shroud moderate that causes of BE scheduling is congested, if, execution in step S516 then; Otherwise, execution in step S518;
Step S510: be left intact, finish;
Step S512: if extremely limit bandwidth usage to surpass the outer shroud heavy congestion that thresholding causes, ring user's low priority traffice stream in then forcing to discharge; If the outer shroud heavy congestion that the real time business packet loss causes, ring user's real time business stream in then forcing to discharge.Limiting terminal inserts or switches and goes into outer shroud simultaneously, finishes;
Step S514: if be the dead outer shroud heavy congestion of limitting bandwidth usage to cause above thresholding; And the congestion state of interior ring is the congested of (not comprising moderate) below the moderate; Then select isolation, CINR all to satisfy threshold value, the non-BE user of outer shroud that CINR is the highest switches to interior ring; If be the outer shroud heavy congestion that the real time business packet loss causes, then select isolation, CINR all to satisfy threshold value, the highest and non-BE user of outer shroud that have a real time business of CINR switches to interior ring, finishes;
Step S516: it is congested that whether ring is in the moderate that the congested or non-BE scheduling of (not comprising moderate) below the moderate causes in judging, if, execution in step S522 then; Otherwise, execution in step S520;
Step S518: it is congested that whether ring is in the moderate that the congested or BE scheduling of (not comprising moderate) below the moderate causes in judging, if, execution in step S526 then; Otherwise, execution in step S524;
Step S520: limiting terminal inserts or switches, and selects an outer shroud BE user to switch to the adjacent area, finishes;
Step S522: select isolation, CINR all to satisfy threshold value, CINR the highest an outer shroud BE user switch to interior ring, finish;
Step S524: select isolation, CINR all to satisfy threshold value, CINR the highest a non-BE user of outer shroud switch to interior ring, finish;
Step S526: limiting terminal inserts or switches, and selects a non-BE user of outer shroud to switch to the adjacent area, finishes.
With reference to Fig. 6, show structured flowchart according to a kind of congestion control system based on FFR of the embodiment of the invention four, comprising:
Congestion judging module 602; Be used for respectively interior ring resource parameters and outer shroud resource parameters and congestion level thresholding are compared; The bandwidth resources of ring were utilized situation in interior ring resource parameters was used to indicate, and the outer shroud resource parameters is used to indicate the bandwidth resources of outer shroud to utilize situation; Judge the congestion level of interior ring and outer shroud according to comparative result; Congested control treatment module 604 is used for carrying out congested control and treatment according to the internal ring of the congestion level of interior ring, and/or, according to the congestion level of outer shroud outer shroud is carried out congested control and treatment.
Preferably, the QoS violation rate that interior ring resource parameters is interior ring, the outer shroud resource parameters is the QoS violation rate of outer shroud.
Preferably, the congestion level thresholding comprises: slight congestion threshold, moderate congestion threshold and heavy congestion thresholding; Congestion level comprises: slightly congested, moderate is congested and heavy congestion.
Preferably, slight congested comprising: BE scheduling overtime cause slightly congested, extremely limit the bandwidth occupancy rate to surpass slightly congested that slight congestion threshold causes; Moderate is congested to be comprised: the overtime moderate that causes of BE scheduling is congested, it is congested extremely to limit the bandwidth occupancy rate to surpass the moderate that the moderate congestion threshold causes; Heavy congestion comprises: the real time business packet loss surpasses heavy congestion that the heavy congestion thresholding causes, extremely limits bandwidth usage to surpass the heavy congestion that the heavy congestion thresholding causes.
Preferably, the congested control treatment module 6042 of ring was used for if the congestion level of interior ring is heavy congestion in congested control treatment module 604 comprised, and the congestion level of outer shroud is for slight congested or do not have congestedly, and the user of ring switches to outer shroud in then selecting; If the congestion level of interior ring is that moderate is congested, and this moderate is congested by overtime the causing of BE scheduling, and outer shroud does not take place then to select the BE user of interior ring to switch to outer shroud by overtime cause congested of BE scheduling; Perhaps, if the congestion level of interior ring is that moderate is congested, and this moderate is congested surpasses the moderate congestion threshold by dead limit bandwidth usage and cause that the non-BE user of ring switches to outer shroud in then selecting.
Preferably; 6042 pairs of congestion levels as if interior ring of the congested control treatment module of interior ring are heavy congestion; And the congestion level of outer shroud is for slight congested or do not have congestedly, and the processing that the user of ring switches to outer shroud in then selecting is specially: if the congestion level of interior ring is heavy congestion, and heavy congestion surpasses the heavy congestion thresholding by dead limit bandwidth usage and causes; And the congestion level of outer shroud is for slight congested or do not have congestedly, and the minimum non-BE user of isolation in then selecting in the ring switches to outer shroud; If the congestion level of interior ring is heavy congestion; And heavy congestion surpasses the heavy congestion thresholding by the real time business packet loss and causes; And the congestion level of outer shroud is for slight congested or do not have congestedly, and the minimum and non-BE user that have a real time business of the isolation in then selecting in the ring switches to outer shroud.
Preferably, the congested control treatment module 6042 of interior ring also comprises: first logging modle, be used for the user of the interior ring that switches to outer shroud is carried out record, and forbid that this user gains interior ring in the setting-up time inscribe.
Preferably, congested control treatment module 604 comprises the congested control treatment module 6044 of outer shroud, be used for if the congestion level of outer shroud is heavy congestion, and the congestion level of interior ring then selects the user of outer shroud to switch to interior ring for slight congested or do not have congestedly; If the congestion level of outer shroud is that moderate is congested; And moderate is congested by overtime the causing of BE scheduling; And the congestion level that or interior ring congested by the overtime moderate that causes of BE scheduling do not take place interior ring then selects the BE user that CINR is the highest in the outer shroud to switch to interior ring for slight congested or do not have congestedly; If interior environment-development life is the congested or heavy congestion of moderate by the BE overtime moderate that causes of scheduling congestion level congested or interior ring, then select the BE user that CINR is minimum in the outer shroud to switch to the adjacent area; If the congestion level of outer shroud is that moderate is congested; And moderate is congested to be caused above the moderate congestion threshold by dead limit bandwidth usage; And interior environment-development life is congested by the overtime moderate that causes of BE scheduling or the congestion level of interior ring for slight congested or do not have congestedly, then select the non-BE user that CINR is the highest in the outer shroud to switch to interior ring; If it is the congested or heavy congestion of moderate that interior ring does not take place by the BE overtime moderate that causes of scheduling congestion level congested or interior ring, then select the non-BE user that CINR is minimum in the outer shroud to switch to the adjacent area; If the congestion level of outer shroud is congested for slightly, then promote the air interface signals power of outer shroud.
Preferably; 6044 pairs of the congested control treatment module of outer shroud are if the congestion level of outer shroud is heavy congestion; And the congestion level of interior ring for slight congested or do not have congested, then select the user of outer shroud switch in the processing of ring be specially: if the congestion level of outer shroud is heavy congestion, and heavy congestion surpasses the heavy congestion thresholding by dead limit bandwidth usage and causes; And the congestion level of interior ring then selects the highest non-BE user of CINR in the outer shroud to switch to interior ring for slight congested or do not have congestedly; If the congestion level of outer shroud is heavy congestion; And heavy congestion surpasses the heavy congestion thresholding by the real time business packet loss and causes; And the congestion level of interior ring then selects the highest and non-BE user that have a real time business of CINR in the outer shroud to switch to interior ring for slight congested or do not have congestedly.
Preferably, the congested control treatment module 6044 of outer shroud also comprises: second logging modle, be used for the user of the outer shroud of ring in switching to is carried out record, and forbid that this user gains outer shroud in the setting-up time inscribe.
With reference to Fig. 7, show structural representation according to a kind of congestion control system based on FFR of the embodiment of the invention five.
The congestion control system based on FFR of present embodiment comprises the congested control treatment module of module 702, resource statistics module 704, congestion judging module 706, interior ring 708, the congested control treatment module 710 of outer shroud is set.
Wherein,
Module 702 is set; Be used to provide the interface that statistics time interval, congestion judging cycle, congestion level threshold value (comprising slight congestion threshold value, moderate congestion threshold value, heavy congestion threshold value), isolation threshold value, CINR threshold value are set, the user can above-mentioned parameter through module 702 is set according to actual needs.
Resource statistics module 704 is used for the utilization of resources situation, resource sum of statistics wireless communication system inner and outer ring in the statistics time interval that module 702 is provided with is set etc.
Congestion judging module 706; Be used for according to the utilization of resources situation that obtains from resource statistics module 704 and the congestion state that parameter that module 702 is provided with is judged system's inner and outer ring is set; Comprise; To compare with the congestion level threshold value that is provided with in the module 702 is set respectively from the interior ring resource parameters of ring utilization of resources situation in the expression of resource statistics module 704 acquisitions and the outer shroud resource parameters of expression outer shroud utilization of resources situation, adjudicate the congestion level state of inner and outer ring according to comparative result.
The congested control treatment module 708 of interior ring; Be used for court verdict according to congestion judging module 706; Taking corresponding measure is that ring is removed congested in the system; Be specially: if the ring congestion level is heavy congestion in the system, then judge the outer shroud congestion state after, take limiting terminal to insert or switch go into interior ring, force to discharge in ring low priority traffice stream or real time business stream, or select in the ring user switch to measure such as outer shroud and encircle congestion state in removing; If encircling congestion level in the system is that moderate is congested, then selects corresponding interior ring user to switch to outer shroud and remove interior ring congestion state according to congestion type; If interior ring congestion level then is left intact for slight congested or do not have congestedly.
The congested control treatment module 710 of outer shroud; Be used for court verdict according to congestion judging module 706; Take corresponding measure to remove congested for system's outer shroud; Be specially: if system's outer shroud congestion level is heavy congestion, in then judging behind the ring congestion state, take limiting terminal to insert or switch to go into outer shroud, force to discharge outer shroud low priority traffice stream or real time business stream, or select outer shroud satisfy in the user of ring entry condition switch in measure such as ring remove the outer shroud congestion state; If system's outer shroud congestion level is that moderate is congested, encircles or select the outer shroud user to switch to the adjacent area in the outer shroud user of ring entry condition switches in then selecting to satisfy accordingly according to congestion type and remove the outer shroud congestion state; If the outer shroud congestion level is congested for slightly, then remove congestion state through the lifting outer shroud signal power of eating dishes without rice or wine; If it is congested that outer shroud does not have, then be left intact.
From above description; Can find out that the congestion situation of inner and outer ring can effectively removed or alleviate to the inner and outer ring congestion control scheme based on FFR provided by the invention; Assurance is based on the wireless communication system throughput of FFR and the maximization of frequency spectrum resource utilization rate, and good QoS.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the jamming control method based on partial frequency multiplexing FFR is characterized in that, comprising:
Respectively interior ring resource parameters and outer shroud resource parameters and congestion level thresholding are compared, said in the ring resource parameters be used to indicate in the bandwidth resources of ring utilize situation, said outer shroud resource parameters is used to indicate the bandwidth resources of outer shroud to utilize situation;
Judge the congestion level of said interior ring and said outer shroud according to comparative result;
Congestion level according to ring in said is carried out congested control and treatment to ring in said, and/or, according to the congestion level of said outer shroud said outer shroud is carried out congested control and treatment.
2. method according to claim 1 is characterized in that, said interior ring resource parameters is the traffic stream service quality Q oS violation rate of said interior ring, the QoS violation rate that said outer shroud resource parameters is said outer shroud.
3. method according to claim 1 and 2 is characterized in that, said congestion level thresholding comprises: slight congestion threshold, moderate congestion threshold and heavy congestion thresholding; Said congestion level comprises: slightly congested, moderate is congested and heavy congestion.
4. method according to claim 3 is characterized in that,
Said slight congested comprising: Best-Effort service BE scheduling is overtime cause slightly congested, extremely limit the bandwidth occupancy rate to surpass slightly congested that said slight congestion threshold causes;
Said moderate is congested to be comprised: the overtime moderate that causes of BE scheduling is congested, it is congested extremely to limit the bandwidth occupancy rate to surpass the moderate that said moderate congestion threshold causes;
Said heavy congestion comprises: the real time business packet loss surpasses heavy congestion that said heavy congestion thresholding causes, extremely limits bandwidth usage to surpass the heavy congestion that said heavy congestion thresholding causes.
5. method according to claim 3 is characterized in that, according to the congestion level of encircling in said the step that ring in said carries out congested control and treatment is comprised:
If the congestion level of ring is heavy congestion in said, and the congestion level of said outer shroud for slight congested or do not have congested, then select said in the user of ring switch to said outer shroud;
Congestion level as if ring in said is that moderate is congested, and said moderate is congested by overtime the causing of Best-Effort service BE scheduling, and said outer shroud does not take place then to select the BE user of said interior ring to switch to said outer shroud by overtime cause congested of said BE scheduling; Perhaps, if the congestion level of ring is that moderate is congested in said, and said moderate is congested surpasses said moderate congestion threshold by dead limit bandwidth usage and cause, then select said in the non-BE user of ring switch to said outer shroud.
6. method according to claim 5 is characterized in that, if the congestion level of ring is heavy congestion in said, and the congestion level of said outer shroud for slight congested or do not have congested, then select said in the user of the ring step that switches to said outer shroud comprise:
If the congestion level of ring is heavy congestion in said; And said heavy congestion surpasses said heavy congestion thresholding by dead limit bandwidth usage and causes; And the congestion level of said outer shroud for slight congested or do not have congested, then select said in the minimum non-BE user of isolation in the ring switch to said outer shroud;
If the congestion level of ring is heavy congestion in said; And said heavy congestion surpasses said heavy congestion thresholding by the real time business packet loss and causes; And the congestion level of said outer shroud for slight congested or do not have congested, then select said in the minimum and non-BE user that have a real time business of isolation in the ring switch to said outer shroud.
7. method according to claim 6 is characterized in that, also comprises:
The said interior user who encircles to switching to outer shroud carries out record, forbids that this user gains interior ring in the setting-up time inscribe.
8. method according to claim 3 is characterized in that, according to the congestion level of said outer shroud the step that said outer shroud carries out congested control and treatment is comprised:
If the congestion level of said outer shroud is heavy congestion, and in said ring congestion level for slight congested or do not have congested, then select the user of said outer shroud switch to said in ring;
If the congestion level of said outer shroud is that moderate is congested; And said moderate is congested by overtime the causing of BE scheduling; And in said ring do not take place by the overtime moderate that causes of said BE scheduling congested or said in the congestion level of ring for slight congested or do not have congestedly, select then that carrier wave switches to said interior the ring with interference with the highest BE user of noise ratio CINR in the said outer shroud; If the environment-development life is the congested or heavy congestion of moderate by the congestion level of the congested or said interior ring of the overtime moderate that causes of said BE scheduling in said, then select the BE user that CINR is minimum in the said outer shroud to switch to the adjacent area;
If the congestion level of said outer shroud is that moderate is congested; And said moderate is congested to be caused above said moderate congestion threshold by dead limit bandwidth usage; And in said the environment-development life by the overtime moderate that causes of said BE scheduling congested or said in ring congestion level for slight congested or do not have congested, then select CINR is the highest in the said outer shroud non-BE user switch to said in ring; If ring does not take place to be the congested or heavy congestion of moderate, then to select the non-BE user that CINR is minimum in the said outer shroud to switch to the adjacent area by the congested or said interior congestion level of encircling of the overtime moderate that causes of said BE scheduling in said;
If the congestion level of said outer shroud is congested for slightly, then promote the air interface signals power of said outer shroud.
9. method according to claim 8 is characterized in that, if the congestion level of said outer shroud is heavy congestion, and in said ring congestion level for slight congested or do not have congested, then select the user of said outer shroud switch to said in the step of ring comprise:
If the congestion level of said outer shroud is heavy congestion; And said heavy congestion surpasses said heavy congestion thresholding by dead limit bandwidth usage and causes; And in said the congestion level of ring for slight congested or do not have congested, then select the highest non-BE user of CINR in the said outer shroud switch to said in ring;
If the congestion level of said outer shroud is heavy congestion; And said heavy congestion surpasses said heavy congestion thresholding by the real time business packet loss and causes; And in said the congestion level of ring for slight congested or do not have congested, then select the highest and non-BE user that have a real time business of CINR in the said outer shroud switch to said in ring.
10. method according to claim 9 is characterized in that, also comprises:
User to the said outer shroud of ring in switching to carries out record, forbids that this user gains outer shroud in the setting-up time inscribe.
11. the congestion control system based on partial frequency multiplexing FFR is characterized in that, comprising:
Congestion judging module; Be used for respectively interior ring resource parameters and outer shroud resource parameters and congestion level thresholding are compared; The bandwidth resources of ring were utilized situation in the ring resource parameters was used to indicate in said, and said outer shroud resource parameters is used to indicate the bandwidth resources of outer shroud to utilize situation; Judge the congestion level of said interior ring and said outer shroud according to comparative result;
Congested control treatment module is used for according to the congestion level of ring in said ring in said being carried out congested control and treatment, and/or, according to the congestion level of said outer shroud said outer shroud is carried out congested control and treatment.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531090A2 (en) * | 1991-09-03 | 1993-03-10 | Nippon Telegraph And Telephone Corporation | Cells re-use partition in a mobile communication system |
| CN101009541A (en) * | 2006-01-23 | 2007-08-01 | 华为技术有限公司 | Disturbance coordination method and device of OFDMA system |
| CN101404800A (en) * | 2008-03-12 | 2009-04-08 | 北京邮电大学 | Semi-static interference coordination method based on void cell in OFDMA cellular system |
| CN101536348A (en) * | 2006-10-31 | 2009-09-16 | 高通股份有限公司 | Inter-cell power control in the presence of fractional frequency reuse |
-
2010
- 2010-11-03 CN CN201010531203.5A patent/CN102469502B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531090A2 (en) * | 1991-09-03 | 1993-03-10 | Nippon Telegraph And Telephone Corporation | Cells re-use partition in a mobile communication system |
| CN101009541A (en) * | 2006-01-23 | 2007-08-01 | 华为技术有限公司 | Disturbance coordination method and device of OFDMA system |
| CN101536348A (en) * | 2006-10-31 | 2009-09-16 | 高通股份有限公司 | Inter-cell power control in the presence of fractional frequency reuse |
| CN101404800A (en) * | 2008-03-12 | 2009-04-08 | 北京邮电大学 | Semi-static interference coordination method based on void cell in OFDMA cellular system |
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