CN101179831A - Congestion control system between base station and wireless network controller - Google Patents
Congestion control system between base station and wireless network controller Download PDFInfo
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- CN101179831A CN101179831A CNA200610138544XA CN200610138544A CN101179831A CN 101179831 A CN101179831 A CN 101179831A CN A200610138544X A CNA200610138544X A CN A200610138544XA CN 200610138544 A CN200610138544 A CN 200610138544A CN 101179831 A CN101179831 A CN 101179831A
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Abstract
The invention discloses a control method for congestion between a base station and a wireless network controller. A congestion indication module is used for conducting congestion test and transmitting a congestion indication control frame to a wireless network controller according to the congestion situation; a determination module is used for determining the type of the received congestion indication control frame; in the event of a congestion indication frame, a regulation module is determined to conduct handling; in the event of a congestion removal indication frame, a recovering module is determined to conduct handling; a regulation module is used for regulating data flux according to the received congestion indication frame, status of a delay timer and variable of the congestion status; the recovering the data flux according to the received congestion removal indication frame. In the condition of limited network transmission between NodeB and RNC, the invention has restriction for network resource that accepts judgment and is added between NodeB and RNC, thereby effectively avoiding congestion of fixed network transmission and increasing service quality.
Description
Technical field
The present invention relates to broadband CDMA system in the wireless communication field, relate in particular to the congestion control system between a kind of base station and the radio network controller.
Background technology
At NodeB (base station) and RNC (Radio Network Controller, radio network controller) between the network node, transmission bandwidth is limited, and operator considers from the angle of operation cost, determines transmission bandwidth according to the traffic model in network coverage area usually.Therefore, at RNC when NodeB sends data, need be according to the configuring condition of this part bandwidth, according to certain algorithm or strategy, rational Resources allocation between each business.
But, between a plurality of NodeB and single RNC,, need networks converge node of configuration for reasonably using total network transmission resource, total bandwidth is reasonably distributed once more.This just makes that the spendable bandwidth resources of leading to certain NodeB are unpredictalbe for RNC, and therefore, assignment of traffic strategy above-mentioned just may lose efficacy.
3GPP TS 25.427 protocol definitions a kind of congested indication control frame, frame structure is as shown in Figure 1.Wherein the implication of Congestion Status is as follows:
0 no congested No TNL congestion
1 keeps ved for future use
2 network delays
3 Network Packet Loss
NodeB is according to detecting the packet loss result that RNC sends packet, according to what of packet loss amount, the congested indication frame that sends certain density is to RNC, frame be numbered 3, RNC can come service traffics are controlled according to the quantity of the congested indication frame that receives in each dispatching cycle.For network delay, NodeB is according to detecting HSDPA (High SpeedDownlink Packet Access, the high speed downlink packet access) DRT (the DelayReference Time in the Frame, postpone the reference time) field (TS 25.435) detection frame delay, when retardation surpasses certain thresholding, transmission lag indication frame is given RNC, frame be numbered 2.
Therefore, need provide a kind of congestion avoidance algorithm, the professional data volume that sends of each R5 is raised or reduce processing, solve the situation of network congestion according to the congested indication control frame and the delay indication frame of TS 25.427 protocol definitions.
Summary of the invention
Main purpose of the present invention is to provide the congestion control system between a kind of base station and the radio network controller, is used to provide the congested control between the RNC of WCDMA system node and the NodeB node, to solve the problem of transmission Flow Control.
To achieve these goals, the invention provides congestion control system between a kind of base station and the radio network controller.Congestion control system comprises: congestion indication module, be positioned at base station side, and be used to carry out congestion detection, and send congested indication control frame to radio network controller according to congestion state, congested indication control frame comprises congested indication frame and relieve congestion indication frame; Judging module is positioned at the radio network controller side, is used to judge the type of received congested indication control frame, if congested indication frame is then adjudicated by adjusting module and handled, if relieve congestion is indicated frame, then adjudicates by recovering module and handles; Adjusting module is positioned at the radio network controller side, is used for state and congestion state variable according to the congested indication frame that is received, delay timer, and the data flow is adjusted; And the recovery module, be positioned at the radio network controller side, be used for the data flow being recovered according to the relieve congestion indication frame that is received.
If radio network controller receives relieve congestion indication frame continuously and no longer continues to receive relieve congestion indication frame, then start and recover timer, when the recovery timer expires, increase data traffic, and restart the recovery timer.
Delay timer starts when receiving once congested indication frame, and in the delay timer term of validity, the congested indication frame that newly receives is not handled.
Congested indication frame comprises packet loss indication frame and postpones the indication frame.
If radio network controller receives congested indication frame, delay timer starts, and then adjusting module does not carry out any processing.
If radio network controller receives congested indication frame, delay timer does not start, and the congestion state variable represents not to be in the relieve congestion state, and then adjusting module reduces data traffic, the congestion state variable is set to expression and is in congestion state, and the start delay timer.Preferably, adjusting module is that data traffic decrease under the situation of packet loss indication frame is set to greater than being the data traffic decrease under the situation that postpones the indication frame at congested indication frame at congested indication frame.
If radio network controller receives congested indication frame, delay timer does not start, and the congestion state variable represents to be in the relieve congestion state, and then adjusting module reduces data traffic, the congestion state variable is set to expression and is in congestion state, and the start delay timer.Preferably, if the recovery timer starts, then adjusting module makes and recovers the timer inefficacy, and wherein, the recovery timer receives continuously at radio network controller and starts when a predetermined quantity relieve congestion is indicated frame.
If radio network controller receives relieve congestion indication frame, then recover module congestion state variable and be set to be in the relieve congestion state, increase data traffic.
By technique scheme, the present invention to the constraint of Internet resources between acceptance judging adding NodeB and the RNC, can effectively avoid the congested of fixed network transmission under the limited situation of Network Transmission between NodeB and the RNC, improve service quality.
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 congested indication control frame structural representation;
Fig. 2 is the flow chart according to the jamming control method between base station of the present invention and the radio network controller;
Fig. 3 is the block diagram according to the congestion control system between base station of the present invention and the radio network controller; And
Fig. 4 is the jamming control method flow chart according to the embodiment of the invention.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail.
With reference to Fig. 2, may further comprise the steps according to the jamming control method between base station of the present invention and the radio network controller:
Step S102, congestion detection is carried out in the base station, and sends congested indication control frame according to congestion state to radio network controller, and congested indication control frame comprises congested indication frame and relieve congestion indication frame.
Congested indication frame comprises packet loss indication frame and postpones the indication frame.
Step S104, radio network controller is judged the type of received congested indication control frame, if congested indication frame then proceeds to step S106, if relieve congestion indication frame then proceeds to step S108.
Step S106, radio network controller is adjusted the data flow according to the state and the congestion state variable of the congested indication frame that is received, delay timer.
If delay timer starts, then do not carry out any processing.
If delay timer does not start, and the congestion state variable represents not to be in the relieve congestion state, then reduces data traffic, and the congestion state variable is set to expression and is in congestion state, and the start delay timer.Preferably, be that data traffic decrease under the situation of packet loss indication frame is set to greater than being the data traffic decrease under the situation that postpones the indication frame at congested indication frame at congested indication frame.
If delay timer does not start, and the congestion state variable represents to be in the relieve congestion state, then reduces data traffic, and the congestion state variable is set to expression and is in congestion state, and the start delay timer.Preferably, if the recovery timer starts, then make and recover the timer inefficacy, wherein, the recovery timer receives continuously at radio network controller and starts when a predetermined quantity relieve congestion is indicated frame.
Step S108, radio network controller recovers the data flow according to the relieve congestion indication frame that is received.
The congestion state variable is set to be in the relieve congestion state, increases data traffic.
In addition, alternatively,, then start and recover timer, when the recovery timer expires, increase data traffic, and restart the recovery timer if radio network controller receives relieve congestion indication frame continuously and no longer continues to receive relieve congestion indication frame.
Alternatively, delay timer is set, when receiving once congested indication frame, the start delay timer, and in the delay timer term of validity, the congested indication frame that newly receives is not handled.
With reference to Fig. 3, comprise according to the congestion control system between base station of the present invention and the radio network controller 10: congestion indication module 20, be positioned at base station side, be used to carry out congestion detection, and sending congested indication control frame to radio network controller according to congestion state, congested indication control frame comprises congested indication frame and relieve congestion indication frame; Judging module 30 is positioned at the radio network controller side, is used to judge the type of received congested indication control frame, if congested indication frame, then adjudicate by adjusting module 40 and handle, if relieve congestion indication frame is then adjudicated by recovering module 50 and handled; Adjusting module 40 is positioned at the radio network controller side, is used for state and congestion state variable according to the congested indication frame that is received, delay timer, and the data flow is adjusted; And recover module 50, and be positioned at the radio network controller side, be used for the data flow being recovered according to the relieve congestion indication frame that is received.
If radio network controller receives relieve congestion indication frame continuously and no longer continues to receive relieve congestion indication frame, then start and recover timer, when the recovery timer expires, increase data traffic, and restart the recovery timer.
Delay timer starts when receiving once congested indication frame, and in the delay timer term of validity, the congested indication frame that newly receives is not handled.
Congested indication frame comprises packet loss indication frame and postpones the indication frame.
If radio network controller receives congested indication frame, delay timer starts, and then adjusting module 40 does not carry out any processing.
If radio network controller receives congested indication frame, delay timer does not start, and the congestion state variable represents not to be in the relieve congestion state, and then adjusting module 40 reduces data traffic, the congestion state variable is set to expression and is in congestion state, and the start delay timer.Preferably, adjusting module 40 is that data traffic decrease under the situation of packet loss indication frame is set to greater than being the data traffic decrease under the situation that postpones the indication frame at congested indication frame at congested indication frame.
If radio network controller receives congested indication frame, delay timer does not start, and the congestion state variable represents to be in the relieve congestion state, and then adjusting module 40 reduces data traffic, the congestion state variable is set to expression and is in congestion state, and the start delay timer.Preferably, if the recovery timer starts, then adjusting module 40 makes and recovers the timer inefficacy, and wherein, the recovery timer receives continuously at radio network controller and starts when a predetermined quantity relieve congestion is indicated frame.
If radio network controller receives relieve congestion indication frame, then recover module 50 congestion state variablees and be set to be in the relieve congestion state, increase data traffic.
The present invention relates to the congestion avoidance algorithm of R5 business between broadband CDMA system NodeB network node and the RNC network node.
Congested control is carried out the secondary adjustment to the data volume that PVC (Permanent Virtual Circuit, PVC) back-pressure Flow Control draws, and operation has two types:
1) speed adjustment principle is fast downward modulation, raises slowly;
2) data volume is set and sends percentage P, multiply by P but actual traffic volume is the business traffic volume, initial condition P=100% when congested situation takes place, reduces the value of P, to reach the purpose of adjusting flow;
3) a Pending Timer (delay timer) timer is set, when receiving once congested indication frame, starts Pending Timer timer, in the timer term of validity, congested indication frame is not handled;
4) adjustment of P when receiving congested indication frame, receives a congested indication frame at every turn, P=P-10%, and the initial value of P is 100%, up to P=0;
5) adjustment of P when receiving delay indication frame at every turn, receives one and postpones indication frame, P=P-5%;
6) when receiving relieve congestion indication frame continuously, suitable adjustment P whenever receives a relieve congestion indication frame, and P just increases by 5%, P=P+5%;
7) when when continuously reception congestion is removed the indication frame, promptly to the suitable increase of P the time, receive congested indication frame, so just think that this slight adjustment has destroyed network equalize, so, just P is reduced 5%, return to state in the past;
8) receiving relieve congestion indication frame continuously, after reaching certain number of times, NodeB can not send relieve congestion indication frame again, in this time, starts Resume Timer timer (recovery timer), when timer expires, adjusting P increases by 10%, restarts the ResumeTimer timer, if during this period, received congested indication frame, ResumeTimer ceases to be in force automatically so;
9) congestion state variable ConState is set, if ConState=0 shows currently to be in the relieve congestion state, if ConState=1 shows the current congestion state that is in.
Below in conjunction with Fig. 4 the enforcement of technical scheme is described in further detail:
1) initial condition, P=100%, Pending Timer is in failure state, ConState=-1
2) RNC receives n congested indication frame in a dispatching cycle, then carries out following processing:
If a) this moment, Pending Timer was not activated, and ConState～=0, the Pending of P=P-n*10%, and startup so Timer, it is 1 that state variable ConState is composed
B) if Pending Timer this moment is in effective status, congested indication frame is not handled so
C) if Pending Timer is not activated, but ConState=0, and ResumeTimer is not activated, and P=P-5% starts Pending Timer so
D) if Pending Timer is not activated, but ConState=0, and ResumeTimer starts, P=P-10% so, and Resume Timer lost efficacy, and started PendingTimer
3) RNC receives n delay indication frame in a dispatching cycle, then carries out following processing:
If a) this moment, Pending Timer was not activated, and ConState～=0, the Pending of P=P-n*5%, and startup so Timer, it is 1 that state variable ConState is composed
B) if Pending Timer this moment is in effective status, congested indication frame is not handled so
C) if Pending Timer is not activated, but ConState=0, and ResumeTimer is not activated, and P=P-5% starts Pending Timer so
D) if Pending Timer is not activated, but ConState=0, and ResumeTimer starts, P=P-10% so, and Resume Timer lost efficacy, and started PendingTimer
4) when RNC receives relieve congestion indication frame, with state variable ConState=0, and, P=P+5%, and the number of the relieve congestion indication frame that arrives of recorder, Num
UnTNL=Num
UnTNL+ 1, work as Num
UnTNLIn the time of 〉=5, start Resume Timer timer
5) when the inefficacy of Resume Timer timer, with P=P+10%, and start Resume Timer timer once more, up to P=100%.
In sum, this algorithm makes RNC to adjust the traffic carrying capacity that sends dynamically according to the quantity of the congested indication frame that receives, when congestion state is restored, can indicate frame to come slowly restore data traffic volume according to relieve congestion, reduced because the congestion condition of fixed network when resource-constrained improved professional service quality.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the congestion control system between base station and the radio network controller is characterized in that, comprising:
Congestion indication module is positioned at described base station side, is used to carry out congestion detection, and sends congested indication control frame according to congestion state to described radio network controller, and described congested indication control frame comprises congested indication frame and relieve congestion indication frame;
Judging module is positioned at described radio network controller side, is used to judge the type of received described congested indication control frame, if described congested indication frame, then adjudicate and handle, if described relieve congestion indication frame is then adjudicated by recovering module and handled by adjusting module;
Described adjusting module is positioned at described radio network controller side, is used for state and congestion state variable according to the described congested indication frame that is received, delay timer, and the data flow is adjusted; And
Described recovery module is positioned at described radio network controller side, is used for according to the described relieve congestion indication frame that is received the data flow being recovered.
2. congestion control system according to claim 1, it is characterized in that, if described radio network controller receives described relieve congestion indication frame continuously and no longer continues to receive described relieve congestion indication frame, then start and recover timer, when described recovery timer expires, increase data traffic, and restart described recovery timer.
3. congestion control system according to claim 1 is characterized in that, described delay timer starts when receiving once described congested indication frame, and in the described delay timer term of validity, the described congested indication frame that newly receives is not handled.
4. congestion control system according to claim 1 is characterized in that, described congested indication frame comprises packet loss indication frame and postpones the indication frame.
5. according to claim 1 or 3 described congestion control systems, it is characterized in that if described radio network controller receives described congested indication frame, described delay timer starts, then described adjusting module does not carry out any processing.
6. according to claim 1 or 3 described congestion control systems, it is characterized in that, if described radio network controller receives described congested indication frame, described delay timer does not start, and described congestion state variable represents not to be in the relieve congestion state, then described adjusting module reduces data traffic, and described congestion state variable is set to expression and is in congestion state, and starts described delay timer.
7. congestion control system according to claim 6, it is characterized in that described adjusting module is that the data traffic decrease under the situation of packet loss indication frame is set to greater than being the data traffic decrease under the situation that postpones the indication frame at described congested indication frame at described congested indication frame.
8. according to claim 1 or 3 described congestion control systems, it is characterized in that, if described radio network controller receives described congested indication frame, described delay timer does not start, and described congestion state variable represents to be in the relieve congestion state, then described adjusting module reduces data traffic, and described congestion state variable is set to expression and is in congestion state, and starts described delay timer.
9. congestion control system according to claim 8, it is characterized in that, if recovering timer starts, then described adjusting module lost efficacy described recovery timer, wherein, described recovery timer receives continuously at described radio network controller and starts when a predetermined quantity described relieve congestion is indicated frame.
10. congestion control system according to claim 1, it is characterized in that, if described radio network controller receives described relieve congestion indication frame, the described congestion state variable of then described recovery module is set to be in the relieve congestion state, increases data traffic.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200610138544XA CN101179831A (en) | 2006-11-07 | 2006-11-07 | Congestion control system between base station and wireless network controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200610138544XA CN101179831A (en) | 2006-11-07 | 2006-11-07 | Congestion control system between base station and wireless network controller |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142103A1 (en) * | 2009-06-10 | 2010-12-16 | 中兴通讯股份有限公司 | Method and system for network congestion management |
| CN102202375A (en) * | 2010-03-25 | 2011-09-28 | 中兴通讯股份有限公司 | Method and system for controlling MTC (Machine Type Communication) equipment access and transceiving data |
| CN102239666A (en) * | 2008-11-11 | 2011-11-09 | 爱立信电话股份有限公司 | Method and device for enabling indication of congestion in a telecommunications network |
| CN102244856A (en) * | 2010-05-13 | 2011-11-16 | 电信科学技术研究院 | Method and apparatus for controlling downlink data transmission of MTC device |
| WO2012149787A1 (en) * | 2011-09-30 | 2012-11-08 | 华为技术有限公司 | Traffic control method and device |
| CN112087283A (en) * | 2016-02-18 | 2020-12-15 | 瑞典爱立信有限公司 | System, method and apparatus for managing control plane optimized data rates |
-
2006
- 2006-11-07 CN CNA200610138544XA patent/CN101179831A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239666A (en) * | 2008-11-11 | 2011-11-09 | 爱立信电话股份有限公司 | Method and device for enabling indication of congestion in a telecommunications network |
| WO2010142103A1 (en) * | 2009-06-10 | 2010-12-16 | 中兴通讯股份有限公司 | Method and system for network congestion management |
| CN102202375A (en) * | 2010-03-25 | 2011-09-28 | 中兴通讯股份有限公司 | Method and system for controlling MTC (Machine Type Communication) equipment access and transceiving data |
| WO2011116602A1 (en) * | 2010-03-25 | 2011-09-29 | 中兴通讯股份有限公司 | Method and system for controlling access of mtc equipments and implementing data transmission and reception |
| CN102244856A (en) * | 2010-05-13 | 2011-11-16 | 电信科学技术研究院 | Method and apparatus for controlling downlink data transmission of MTC device |
| CN102244856B (en) * | 2010-05-13 | 2014-11-26 | 电信科学技术研究院 | Method and apparatus for controlling downlink data transmission of MTC device |
| WO2012149787A1 (en) * | 2011-09-30 | 2012-11-08 | 华为技术有限公司 | Traffic control method and device |
| CN112087283A (en) * | 2016-02-18 | 2020-12-15 | 瑞典爱立信有限公司 | System, method and apparatus for managing control plane optimized data rates |
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