CN101854660B - Congestion control method and device - Google Patents
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Abstract
The invention discloses a congestion control method and a congestion control device for avoiding repeated oscillation between TNL congestion and congestion removal. The congestion control method provided by the invention comprises that: a base station reduces data transmission resources distributed to user equipment (UE) according to the transmission network layer (TNL) congestion indication sent by a radio network controller (RNC); and when the TNL congestion removal of the UE is determined, the base station increases the data transmission resources distributed to the UE by multiple times till the data transmission resources distributed to the UE reach a preset threshold value.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of jamming control method and device.
Background technology
Transport network layer (TNL, Transport Network Layer) congestion control, the transport layer that is used for interface (Iub mouth) between control radio network controller (RNC) and base station (Node-B) is congested.The RNC of Iub mouth and Node-B have two kinds of connected modes, and transport layer protocol can be based on asynchronous transfer mode (ATM) mode, also can be based on the IP mode.If based on the ATM mode, adopt direct-connected connected mode between RNC and Node-B, the bandwidth between RNC and Node-B is fixed configurations, the congested situation of TNL can not occur.If based on the IP mode, adopt the connected mode of route switching between RNC and Node-B, when a plurality of inlet flows arrive a router, and the output stream of router TNL occurs congested during less than the summation of these inlet flows.When certain logic entity stream (MAC-d flow) of being responsible for processing the media access control layer of the designated lane (DCH) of distributing to UE under connection mode TNL occurs when congested, need to reduce the data volume of this MAC-d flow, the scheduler module of media access control layer (MAC layer) need to reduce the interface-free resources of distributing to this MAC-d flow, because the scheduling of MAC is based on subscriber equipment (UE), so reduce the interface-free resources of distributing to the UE that comprises this MAC-d flow.
3GPP 25.902 agreements (Release 6) regulation, access in (HSUPA) system in High Speed Uplink Packet, RNC is responsible for detecting congestion control, and by the congested indication control frame notice Node-B in Frame Protocol (FP), Node-B carries out concrete congestion control.
RNC can detect by dual mode congested, and by the notice of the congested indication control frame in FP Node-B, wherein, the information that congested indication control frame comprises is divided into three kinds: " congested-detect frame losing ", " congested-detect time delay " and " not congested ".
After Node-B received the congested indication control frame of RNC, Node-B need to reduce the bit rate of Iub mouth, and concrete operations comprise:
1) if Node-B receives congested indication, for example " congested-detect frame losing " or " congested-detect time delay ", Node-B needs to reduce at least the bit rate that congested MAC-d flow occurs.
2) if Node-B receives the indication of " not congested ", Node-B need to return to normal condition gradually.
3) if Node-B does not receive any congestion state indication some seconds under congestion state, Node-B can return to normal condition gradually.
Congestion detection algorithm is carried out at RNC, and congestion avoidance algorithm carries out at Node-B, can minimization system congested.The scheduling of HSUPA system is carried out at Node-B, and the TNL layer congestion control of RNC and Node-B can provide better service quality (QoS, Quality ofService) end to end to the user, and reduces overhead.Congested due to the Iub mouth, cause the Loss Rate of packet to increase, can trigger so high-rise more data re-transmission, such as Radio Link is controlled (RLC, Radio LinkControl) layer and transmission control protocol (TCP, Transmission Control Protocol) re-transmission of layer, can cause the increase of loading, the waste of system resource and the decline of systematic function like this.For fear of this situation, the TNL congestion control mechanism need to detect that the TNL of Iub mouth is congested and to control TNL congested.Congestion detection mechanism can be based on the detection of time delay or packet loss.
At present common TNL congestion control flow process as shown in Figure 1, Node-B safeguards the state of UE, the set of UE is divided into congested subset and non-congested subset, Node-B adds congested subset or non-congested subset according to the indication in the congested indication control frame of receiving with UE.Node-B once dispatches every 5 milliseconds (ms), at first determine UE to be scheduled, and definite residing set of this UE, for the UE in congested subset, Node-B is according to min (the actual cache size of safeguarding, the size of data that the resource of distributing during last scheduling can be carried/2) carrying out resource distributes, be less value in the data volume that can carry of resource that Node-B distributes for this UE when selecting current reality to safeguard the cache size of this UE and last scheduling of resource/2, determine current resource for this UE distribution.For the UE in non-congested subset, the resource that Node-B distributes for this UE according to the cache size of current actual this UE that safeguards.
Yet, although prior art can limit by the maximum allocated resource that reduces in the resource distribution data volume of eating dishes without rice or wine that congested MAC-d flow occurs when generation TNL is congested, control the size of the data volume of Iub mouth, thereby control TNL is congested.But, during relieve congestion is processed, after receiving not congested indication (being relieve congestion), immediate recovery is normal condition, namely immediately UE is added non-congested subset, divide the resource of the cache size of this UE that timing safeguards according to reality immediately for this UE distribution in resource, can cause TNL again occurring congested, it is congested and separate vibration repeatedly between congested thereby TNL to occur, and has increased the signaling consumption of Iub mouth.
In addition, the transport layer that because TNL is congested is mainly bottom is congested, if transport layer is Transmission Control Protocol, the TNL relieve congestion need to be in conjunction with the slowstart algorithm of Transmission Control Protocol, be the data volume of immediate recovery before congested of TCP layer, the data volume of TCP layer increases according to exponential form.May occur thus in TNL relieve congestion process, the data volume grow speed of MAC layer is higher than the data volume grow speed of TCP layer, thereby causes occuring in TNL relieve congestion process new congested.
In sum, the TNL congestion control mechanism of prior art can't avoid TNL congested and separate vibration repeatedly between congested, has increased the signaling consumption of Iub mouth, and may occur new congestedly in TNL relieve congestion process, causes systematic function to descend.
Summary of the invention
The embodiment of the present invention provides a kind of jamming control method and device, and is congested and separate vibration repeatedly between congested in order to avoid TNL.
A kind of jamming control method that the embodiment of the present invention provides comprises:
The base station is reduced to according to the congested indication of transport network layer TNL that radio network controller (RNC) sends the data transmission resources that user equipment (UE) distributes;
Described base station is when determining the TNL relieve congestion of described UE, several times for this UE increases the data transmission resources that distributes, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance.
A kind of base station that the embodiment of the present invention provides comprises:
The indication analysis and processing unit is used for the congested indication of transport network layer TNL according to the radio network controller (RNC) transmission, is reduced to the data transmission resources that user equipment (UE) distributes;
Scheduling processing unit is used for when determining the TNL relieve congestion of described UE, several times for this UE increases the data transmission resources that distributes, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance.
The embodiment of the present invention, base station are reduced to according to the congested indication of transport network layer TNL that radio network controller (RNC) sends the data transmission resources that user equipment (UE) distributes; Described base station is when determining the TNL relieve congestion of described UE, increase for this UE the data transmission resources that distributes several times, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance, thereby avoided TNL congested and separate vibration repeatedly between congested, and reduced the signaling consumption of Iub mouth, improved systematic function.
Description of drawings
Fig. 1 is TNL congestion control schematic flow sheet of the prior art;
Fig. 2 carries out the overall flow schematic diagram of TNL congestion control for the system that the embodiment of the present invention provides for the user;
The handling process schematic diagram of congested indication and relieve congestion indication is received in the base station that Fig. 3 provides for the embodiment of the present invention;
Handling process schematic diagram when the base station that Fig. 4 provides for the embodiment of the present invention is the UE scheduling resource;
The schematic flow sheet of a kind of jamming control method that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of base station that Fig. 6 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of jamming control method and device, and is congested and separate vibration repeatedly between congested in order to avoid TNL, thereby reduced the signaling consumption of Iub mouth, and avoids occuring new congested in TNL relieve congestion process, improves systematic function.
The problem that the embodiment of the present invention exists for existing TNL congestion control scheme, proposed effective solution: the TNL congestion control is for the data transmission resources of distributing to UE, the adjustment mode that the minimizing of the employing property taken advantage of, additivity increase, after keeping the stable transfer of a period of time, increase to distribute gradually again bandwidth, thereby avoid the congested vibration repeatedly between congested with solution of TNL; And, in conjunction with the congestion detection mechanism of relieve congestion time of TCP layer and RNC, return to gradually normal condition in the relieve congestion process, thereby avoid occuring new congested in TNL relieve congestion process, reach the congested purpose of effective control TNL.
In the embodiment of the present invention, in advance in base station (Node-B) for UE arranges three set, be respectively non-congested set, congested set, incomplete congested set.UE in non-congested set is in non-congestion state, and it is congested that namely TNL does not occur the data flow of current UE; UE in congested set is in congestion state, and namely that TNL has occured is congested for the data flow of current UE; UE in incomplete congested set is in incomplete congestion state, and namely the data flow of current UE is in the process of recovering gradually from TNL is congested.
After Node-B receives the congested indication of TNL, can indication congested according to TNL corresponding UE be added congested set; And after Node-B receives TNL relieve congestion indication, can corresponding UE first be added incomplete congested set (rather than immediately UE being added congested set) according to the indication of TNL relieve congestion, the data transmission resources that distributes for the UE in this incomplete congested set can little by little increase, after increasing to a certain degree, again UE is added non-congested set, for the UE in non-congested set, be this UE distribute data transfer resource according to the cache size of UE reality.Wherein, due to the real-time cache size to base station report self reality of UE meeting, so base station maintenance has the real cache size of UE.
Below in conjunction with accompanying drawing, the technical scheme that the embodiment of the present invention provides is described.
Referring to Fig. 2, the overall flow of a kind of TNL congestion control that the embodiment of the present invention provides comprises step:
S101, RNC carry out packet loss detection, if the LOF of N continuous frame data detected, frame number (FSN in the FP Frame that even receives, Frame Sequence Number) FSN with the expectation reception differs the N frame, determine that TNL has occured congested, and send the congested indication of TNL to Node-B.
Wherein, N is the integer more than or equal to 1, and concrete value can arrange according to actual needs.In the congested indication of TNL, comprise the congested corresponding UE information of data flow of TNL that occured.
RNC can determine whether by other means that also that TNL occurs is congested, such as by time delay detection etc.
After S102, Node-B received the congested indication of TNL, the UE information that comprises in indication congested according to this TNL arranged intermediate variable TBTNL=TBUE/a corresponding to this UE; Node-B divides timing carrying out resource, according to min{TBTNL, the real cache of UE size } determine the size of the data transmission resources that need to distribute for this UE.
Wherein, the intermediate variable TBTNL that UE is corresponding refers to the intermediate variable be used to the size of the data transmission resources that is adjusted into this UE distribution.Congested to the process of relieve congestion from the data flow generation TNL of UE, be restricted to by TBTNL corresponding to this UE the resource size that this UE distributes.
When UE was in non-congested set, the value of TBUE equaled transmission block size maximum in the actual transmissions piece of this UE in statistic window W; When UE was in congested set or incomplete congested set, the value of TBUE equated with the value of TBTNL.
Statistic window W, the statistic window that namely sets in advance is used for adding up the maximum transmission block (TB) of actual transmissions piece of receiving UE in nearest statistic window W.After the congested indication of TNL was received in the base station, in statistic window W, the size of maximum TB was the value of TBUE.
Wherein, a is the integer greater than 1, and 1/a is the minimizing ratio of intermediate variable TBTNL.That is to say, by the adjustment of parameter a to the minimizing of the TBTNL property taken advantage of, make the adjustment of the data transmission resources of distributing to UE keep stable.
If S103 RNC detects the situation that admission control does not appear in continuous L frame, send the TNL relieve congestion and indicate to Node-B, Node-B recovers gradually, namely makes at set intervals TBTNL=TBTNL+TBUE/b, until return to non-congestion state fully.Wherein, L is the integer more than or equal to 1.
Comprise the congested corresponding UE information of data flow of TNL of having removed in the indication of TNL relieve congestion.
The congested indication of TNL and the indication of TNL relieve congestion are all to carry by the congested indication control frame in FP, are therefore all also the indications of making for the data flow state of some UE.
Wherein, b is the integer greater than 1, and 1/b is the scaling up of intermediate variable TBTNL.That is to say, by parameter b, TBTNL is carried out the adjustment that additivity increases, make the adjustment of the data transmission resources of distributing to UE keep stable.
The below is for how realizing that in concrete congestion control process congested the recovery gradually of TNL describes in detail.
In the TNL congestion control that the embodiment of the present invention provides, UE is divided into congestion state, incomplete congestion state, three kinds of states of non-congestion state.
In embodiments of the present invention, set in advance two kinds of counter C1 and C2 in base station side, and timer T1 is set.
UE is transformed into the condition of incomplete congestion state by congestion state, if just receive the TNL relieve congestion indication of RNC, Rule of judgment is too single, needs to increase Rule of judgment.And the purpose of counter C1 is set, just in order to prevent that the base station from should receive but not receive TNL relieve congestion indication, for example, RNC has sent the indication of TNL relieve congestion, but may be due to link failure, cause the base station not received, perhaps the RNC self reason causes should send the indication of TNL relieve congestion but send etc., can cause Node-B this UE can't be returned to non-congestion state.Therefore, counter C1 statistics is set the frame number of admission control do not occur continuously, congested whether releasing of TNL of coming the data flow of monitoring UE to occur, if the frame number of counter C1 statistics surpasses certain value, the base station is thought that TNL that the data flow of UE occurs is congested and is removed, and can revert to gradually the stock number that this UE distributes.This shows, when UE enters congested set, need to start counter C1, when UE leaves congested set, need to stop counter C1.Be that UE is transformed into the condition of incomplete congestion state by congestion state, to receive that the TNL relieve congestion indication of RNC or counter C1 counting complete, these two conditions satisfy one of them, determine all that TNL that the data flow of UE occurs is congested and remove, UE need to be transformed into incomplete congestion state by congestion state.
The purpose of counter C2 is set, is whether data flow for monitoring UE TNL occurs congested.The purpose of timer T1 is set, and is the retention time for intermediate variable corresponding to monitoring UE, i.e. time of not changing of the value of intermediate variable corresponding to monitoring UE.
Counter C2 and timer T1 are to be applied in the congested process of removing gradually of TNL, namely for be the UE that is in incomplete congested set.When UE enters incomplete congested set, need to start counter C2 and timer T1.When UE leaves incomplete congested set, need to stop counter C2 and timer T1.
mainly transport layer congested of bottom because TNL is congested, need to reduce the interface-free resources of distributing to UE at the MAC layer, therefore the TNL congestion control mechanism should combine with the congestion control mechanism of transport layer, if the agreement that transport layer adopts is Transmission Control Protocol, due to the slowstart algorithm of relieve congestion process need in conjunction with Transmission Control Protocol, be TCP layer in the relieve congestion process data volume before can't immediate recovery congested to TNL, the data volume of recovering increases according to exponential form, therefore the data volume grow speed of MAC layer need to be lower than the data volume grow speed of TCP layer, just can not cause in the process of relieve congestion occuring new congested.Therefore, in the congested process of removing gradually of the TNL in the embodiment of the present invention, need to be complementary with the congestion control mechanism of bottom transport layer.That is to say, in order to realize collaborative work high-rise and transport layer, therefore timer T1 is set.
Use timer T1 in the relieve congestion process, be used for recording TBTNL in the congested process of removing gradually and remain the constant time of a certain value.The value of TBTNL remains unchanged, and high-rise data volume can not continue to increase, and when timer T1 was overtime, the value of TBTNL just can further increase, and makes high-rise data volume further increase.And the overtime time of experiencing of high-rise waiting timer T1 is namely the needed time of relieve congestion process of transport layer, thereby has realized collaborative work high-rise and transport layer.
Timing value and the transport layer of timer T1 have relation, if transport layer is User Datagram Protoco (UDP) (UDP, User Datagram Protocol) pattern, the timing value of T1 can be set to 0, if transport layer is the TCP pattern, due to startup slowly and the congestion control mechanism of TCP, the needed time of relieve congestion process of TCP is long, and the timing value that T1 can be set is the Loop Round Trip Time (RTT) of TCP.
Node-B is in the congested process of removing gradually of TNL, increase gradually TBTNL, after Node-B increases TBTNL, if it is congested that RNC does not detect TNL, Node-B just can continue to increase TBTNL, and the congested mechanism of RNC judgement TNL is if the N continuous frame detects admission control, thinks that generation TNL is congested.Therefore, introduce counter C2 in congested releasing process gradually, in order in congested releasing process gradually, record the number of times that the FP frame of the congested data flow transmission of TNL occurs UE, with at the medium access control entity MAC-e protocol Data Unit (PDU that eats dishes without rice or wine to receive this UE, ProtocolData Unit) only has schedule information (SI in, Scheduling Information) number of times and, when this with when reaching the threshold value that sets in advance, add the time delay (being 30ms) of Iub mouth, think that counter C2 counting completes.If Node-B did not receive RNC before C2 counting is completed the congested indication of TNL can think simply that TNL does not during this period of time occur is congested, can further increase the interface-free resources of distributing to this UE.
Wherein, statistics eats dishes without rice or wine to receive the number of times that only has SI in the MAC-e PDU of UE, is too small in order to prevent TBTNL, when making the resource of distributing can't carry a PDU, causes congested situation about can't remove.
Referring to Fig. 3, the Node-B that the embodiment of the present invention provides receives that the handling process after the TNL congestion control of RNC transmission is indicated is as follows:
At first, the type of the TNL congestion control indication of Node-B judgement RNC transmission is the congested indication of TNL or the indication of TNL relieve congestion.
When Node-B determine to receive be the congested indication of TNL the time, the UE information that comprises in indication congested according to this TNL is judged the set under this UE; When the set under determining this UE is non-congested set, the 1/a of the interior maximum transmitted piece of statistic window W that intermediate variable TBTNL corresponding to this UE equal to set in advance is set, i.e. TBUE/a; And, this UE is added congested set; When the set under determining this UE was congested set, the value of the intermediate variable TBTNL that this UE is corresponding was adjusted into original 1/a, i.e. TBTNL=TBTNL/a; When the set under determining this UE is incomplete congested set, this UE is added congested set, the value of the intermediate variable TBTNL that this UE is corresponding is adjusted into original 1/a, and the data flow that stops monitoring retention time of intermediate variable TBTNL corresponding to this UE and this UE whether TNL to occur congested, namely stop timer T1 sum counter C2.
When Node-B determine to receive be the indication of TNL relieve congestion the time, according to the UE information that comprises in this TNL relieve congestion indication, determine the set under this UE.When the set under this UE is congested set, stop monitoring congested whether releasing of TNL that the data flow of this UE occurs, namely stop counter C1, this UE is added incomplete congested set, and the data flow of monitoring retention time of intermediate variable TBTNL corresponding to this UE and this UE whether TNL to occur congested, namely start timer T1 sum counter C2.And, make TBTNL=TBTNL+TBUE/b.When the set under this UE is non-congested set or incomplete congested set, this TNL relieve congestion indication is defined as invalid indication.
Referring to Fig. 4, the Node-B that the embodiment of the present invention provides is that the handling process of UE Resources allocation is as follows:
At first determine UE to be scheduled, then judge the residing set of this UE.
For the UE in non-congested set, Node-B is this UE distribute data transfer resource according to the real cache size of UE.
For the UE in congested set, the intermediate variable TBTNL that Node-B is corresponding according to this UE is this UE distribute data transfer resource, namely according to min{TBTNL, and the real cache of UE size } be this UE distribute data transfer resource; And, monitor congested whether releasing of TNL that the data flow of this UE occurs, judging namely whether counter C1 counts completes, when counter C1 counting is completed, when namely determining TNL relieve congestion that the data flow of this UE occurs, this UE is added incomplete congested set, and the data flow of monitoring retention time of intermediate variable TBTNL corresponding to this UE and this UE whether TNL to occur congested, namely start timer T1 sum counter C2.
For the UE to be dispatched in incomplete congested set, the mode that Node-B adopts additivity to increase is increased to the data transmission resources that this UE distributes gradually.Particularly:
Node-B judges whether intermediate variable TBTNL corresponding to UE keeps a period of time do not changed (judging namely whether timer T1 is overtime), and whether the data flow that judges this UE TNL congested (namely judge whether counter C2 counts complete) does not occur, surpass the very first time when the retention time of determining the intermediate variable that UE is corresponding, and TNL does not occur when congested in the data flow of this UE, the intermediate variable TBTNL that this UE is corresponding increases by the first percentage, even TBTNL=TBTNL+TBTNL/b, and whether the maximum transmitted block size TBINIT of TNL when congested occur more than or equal to the data flow of this UE in the intermediate variable TBTNL that judges the current correspondence of this UE, if, illustrate that UE reverts to non-congestion state, this UE is added non-congested set, and the real cache size according to this UE, be this UE distribute data transfer resource, otherwise, illustrate that UE does not also revert to non-congestion state fully, still be in incomplete congestion state, restart timer T1 sum counter C2, and the size of the real cache of the intermediate variable TBINIT that relatively this UE is corresponding and this UE, select less value as the size of the current data transmission resources that distributes for this UE, namely according to min{TBTNL, the real cache of UE size } be this UE distribute data transfer resource.
Do not have overtime and/or counter C2 not have in time that counting completes at timer T1, when be the UE Resources allocation, need to be according to min{TBTNL, the real cache of UE is big or small } be this UE distribute data transfer resource.
To sum up, referring to Fig. 5, a kind of jamming control method that the embodiment of the present invention provides comprises step:
S201, base station are reduced to according to the congested indication of transport network layer TNL that radio network controller (RNC) sends the data transmission resources that user equipment (UE) distributes.
S202, described base station are when determining the TNL relieve congestion of described UE, several times for this UE increases the data transmission resources that distributes, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance.
Preferably, step S202 comprises:
The set that this UE is affiliated is judged in the base station when determining the TNL relieve congestion of UE;
When the set under this UE was the congested set that sets in advance, the base station added this UE the incomplete congested set that sets in advance;
For the UE to be dispatched in incomplete congested set, the base station increases for this UE the data transmission resources that distributes several times, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance, the data transmission resources that is the UE distribution returns to normal value fully.
Need to prove, in the embodiment of the present invention, UE is added certain set, refer to this UE is transferred to another set from original set, namely delete this UE in former set, and this UE is joined in another set.
Referring to Fig. 6, a kind of base station that the embodiment of the present invention provides comprises:
Indication analysis and processing unit 11 is used for the congested indication of transport network layer TNL according to the radio network controller (RNC) transmission, is reduced to the data transmission resources that user equipment (UE) distributes.
Preferably, described indication analysis and processing unit 11 when determining the TNL relieve congestion of described UE, is judged the set that this UE is affiliated; When the set under this UE is the congested set that sets in advance, this UE is added the incomplete congested set that sets in advance.
Preferably, described scheduling processing unit 12, for the UE to be dispatched in incomplete congested set, described base station increases for this UE the data transmission resources that distributes several times, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance.
Preferably, described scheduling processing unit 12 comprises:
Set judging unit 121 after being used for having determined UE to be scheduled, judges the set that this UE is affiliated.
The first scheduling unit 122, be used for the UE to be dispatched for incomplete congested set, in the situation that TNL does not occur in the data flow of this UE is congested, when the retention time of intermediate variable corresponding to UE surpasses the very first time, several times for this UE increases the data transmission resources that distributes, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance.
The second scheduling unit 123 is used for the UE for congested set, and the intermediate variable corresponding according to this UE is this UE distribute data transfer resource.
The 3rd scheduling unit 124 is used for the UE for non-congested set, and the real cache size according to this UE is this UE distribute data transfer resource.
The first monitoring means 125, be used for the UE for incomplete congested set, it is congested whether the data flow of monitoring retention time of intermediate variable corresponding to this UE and this UE TNL occurs, wherein, described intermediate variable refers to the intermediate variable be used to the size of the data transmission resources that is adjusted into this UE distribution.
The second monitoring means 126, be used for the UE for congested set, monitor congested whether releasing of TNL that the data flow of this UE occurs, when TNL relieve congestion that the data flow of determining this UE occurs, this UE is added incomplete congested set, and the data flow that triggers retention time of intermediate variable corresponding to first these UE of detecting unit 125 monitoring and this UE whether TNL to occur congested.
Preferably, described the first scheduling unit 122 comprises:
The intermediate variable adjustment unit, be used for the UE to be dispatched for incomplete congested set, surpass the very first time when the retention time of determining the intermediate variable that UE is corresponding, and the data flow of this UE TNL do not occur when congested, the intermediate variable that this UE is corresponding increases by the first percentage.
Resource allocation unit, maximum transmitted block size when whether the intermediate variable that is used for judge the current correspondence of this UE is congested more than or equal to the data flow generation TNL of this UE, if, this UE is added the non-congested set that sets in advance, and the real cache size according to this UE is this UE distribute data transfer resource; Otherwise the size of the intermediate variable that relatively this UE is corresponding and the real cache of this UE selects less value as the size of the current data transmission resources that distributes for this UE.
Preferably, described indication analysis and processing unit 11 comprises:
Indication type judging unit 111 is indicated or the congested indication of TNL for the TNL relieve congestion that is designated as that judgement receives.
Congested indication processing unit 112 is used for when receiving the congested indication of TNL, and the UE information that comprises in indication congested according to this TNL is judged the set that this UE is affiliated; When the set under determining this UE is the non-congested set that sets in advance, the 1/a of the interior maximum transmitted piece of statistic window that intermediate variable corresponding to this UE equal to set in advance is set, wherein, a is the integer greater than 1; And, this UE is added congested set; When the set under determining this UE was congested set, the value of the intermediate variable that this UE is corresponding was adjusted into original 1/a; When the set under determining this UE is incomplete congested set, this UE is added congested set, the value of the intermediate variable that this UE is corresponding is adjusted into original 1/a, and the data flow that stops monitoring retention time of intermediate variable corresponding to this UE and this UE whether TNL to occur congested.
Relieve congestion indication processing unit 113 is used for when receiving the indication of TNL relieve congestion, according to the UE information that comprises in this TNL relieve congestion indication, determines the set that this UE is affiliated; When the set under this UE is the congested set that sets in advance, this UE is added the incomplete congested set that sets in advance.
In sum, the TNL congestion control scheme that the embodiment of the present invention provides, the mode that has adopted the property taken advantage of minimizing, additivity to increase, the congested mechanism of removing has gradually been proposed, this mechanism has taken into full account the congested recovery time of TCP layer and the congested treatment mechanism of RNC, make the data volume of transmission return to gradually normal condition, thereby reach the congested purpose of effective control TNL.And the embodiment of the present invention has considered that also RNC does not send the abnormal conditions of relieve congestion indication, and due to the too little situation that causes carrying a PDU of resource that limits, has further improved the effect of congestion control.In a word, the scheme that provides of the embodiment of the present invention has good autgmentability and realizability.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a jamming control method, is characterized in that, the method comprises:
The base station is reduced to according to the congested indication of transport network layer TNL that radio network controller (RNC) sends the data transmission resources that user equipment (UE) distributes;
The set that this UE is affiliated is judged in described base station when determining the TNL relieve congestion of described UE;
When the set under this UE was the congested set that sets in advance, described base station added this UE the incomplete congested set that sets in advance;
For the UE in incomplete congested set, described base station is by the retention time of intermediate variable corresponding to this UE of monitoring, determining each time that increases the data transmission resources that distributes for this UE, and TNL does not occur when congested when the data flow of this UE, is the data transmission resources of this UE increase distribution;
Wherein, described intermediate variable refers to the intermediate variable be used to the size of the data transmission resources that is adjusted into this UE distribution.
2. method according to claim 1, it is characterized in that, for the UE to be dispatched in incomplete congested set, described base station increases for this UE the data transmission resources that distributes several times, until the step that reaches the threshold value that sets in advance for the data transmission resources of UE distribution comprises:
Described base station surpasses the very first time when the retention time of determining the intermediate variable that UE is corresponding, and TNL does not occur when congested in the data flow of this UE, the intermediate variable that this UE is corresponding increases by the first percentage, and whether the maximum transmitted block size of TNL when congested occur more than or equal to the data flow of this UE in the intermediate variable that judges the current correspondence of this UE, if, this UE is added the non-congested set that sets in advance, and big or small according to the real cache of this UE, be this UE distribute data transfer resource; Otherwise the size of the intermediate variable that relatively this UE is corresponding and the real cache of this UE selects less value as the size of the current data transmission resources that distributes for this UE.
3. method according to claim 1, is characterized in that, the method also comprises:
Described base station is when receiving the congested indication of TNL, and the UE information that comprises in indication congested according to this TNL is judged the set that this UE is affiliated;
When the set under determining this UE is the non-congested set that sets in advance, the 1/a of the interior maximum transmitted piece of statistic window that intermediate variable corresponding to this UE equal to set in advance is set; And, this UE is added congested set;
When the set under determining this UE was congested set, the value of the intermediate variable that this UE is corresponding was adjusted into original 1/a;
When the set under determining this UE is incomplete congested set, this UE is added congested set, the value of the intermediate variable that this UE is corresponding is adjusted into original 1/a, and the data flow that stops monitoring retention time of intermediate variable corresponding to this UE and this UE whether TNL to occur congested;
Wherein, a is the integer greater than 1.
4. method according to claim 3, is characterized in that, the method also comprises:
For the UE in congested set, the described base station intermediate variable corresponding according to this UE is this UE distribute data transfer resource; And, monitor congested whether releasing of TNL that the data flow of this UE occurs, when TNL relieve congestion that the data flow of this UE occurs is determined in described base station, this UE is added incomplete congested set, and the data flow of monitoring retention time of intermediate variable corresponding to this UE and this UE whether TNL to occur congested.
5. the described method of arbitrary claim of according to claim 1 to 4, is characterized in that, the method also comprises:
For the UE in non-congested set, described base station is this UE distribute data transfer resource according to the real cache size of this UE.
6. a base station, is characterized in that, this base station comprises:
Indicate analysis and processing unit, be used for the congested indication of transport network layer TNL according to the radio network controller (RNC) transmission, be reduced to the data transmission resources that user equipment (UE) distributes, when determining the TNL relieve congestion of described UE, judge the set that this UE is affiliated; When the set under this UE is the congested set that sets in advance, this UE is added the incomplete congested set that sets in advance;
Scheduling processing unit is used for when determining the TNL relieve congestion of described UE, and for this UE increases the data transmission resources that distributes, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance, described scheduling processing unit comprises several times:
The set judging unit after being used for having determined UE to be scheduled, judges the set that this UE is affiliated;
The first monitoring means, be used for the UE for incomplete congested set, it is congested whether the data flow of monitoring retention time of intermediate variable corresponding to this UE and this UE TNL occurs, wherein, described intermediate variable refers to the intermediate variable be used to the size of the data transmission resources that is adjusted into this UE distribution;
The first scheduling unit, be used for the UE to be dispatched for incomplete congested set, in the situation that TNL does not occur in the data flow of this UE is congested, when the retention time of intermediate variable corresponding to UE surpasses the very first time, several times for this UE increases the data transmission resources that distributes, until the data transmission resources that distributes for UE reaches the threshold value that sets in advance.
7. base station according to claim 6, is characterized in that, described the first scheduling unit comprises:
The intermediate variable adjustment unit, be used for the UE to be dispatched for incomplete congested set, surpass the very first time when the retention time of determining the intermediate variable that UE is corresponding, and the data flow of this UE TNL do not occur when congested, the intermediate variable that this UE is corresponding increases by the first percentage;
Resource allocation unit, maximum transmitted block size when whether the intermediate variable that is used for judge the current correspondence of this UE is congested more than or equal to the data flow generation TNL of this UE, if, this UE is added the non-congested set that sets in advance, and the real cache size according to this UE is this UE distribute data transfer resource; Otherwise the size of the intermediate variable that relatively this UE is corresponding and the real cache of this UE selects less value as the size of the current data transmission resources that distributes for this UE.
8. base station according to claim 7, is characterized in that, described indication analysis and processing unit comprises:
Indication type judging unit is indicated or the congested indication of TNL for the TNL relieve congestion that is designated as that judgement receives;
Relieve congestion indication processing unit is used for when receiving the indication of TNL relieve congestion, according to the UE information that comprises in this TNL relieve congestion indication, determines the set that this UE is affiliated; When the set under this UE is the congested set that sets in advance, this UE is added the incomplete congested set that sets in advance;
Congested indication processing unit is used for when receiving the congested indication of TNL, and the UE information that comprises in indication congested according to this TNL is judged the set that this UE is affiliated; When the set under determining this UE is the non-congested set that sets in advance, the 1/a of the interior maximum transmitted piece of statistic window that intermediate variable corresponding to this UE equal to set in advance is set; And, this UE is added congested set; When the set under determining this UE was congested set, the value of the intermediate variable that this UE is corresponding was adjusted into original 1/a; When the set under determining this UE is incomplete congested set, this UE is added congested set, the value of the intermediate variable that this UE is corresponding is adjusted into original 1/a, and the data flow that stops monitoring retention time of intermediate variable corresponding to this UE and this UE whether TNL to occur congested, wherein, a is the integer greater than 1.
9. base station according to claim 8, is characterized in that, described scheduling processing unit also comprises:
The second monitoring means, be used for the UE for congested set, monitor congested whether releasing of TNL that the data flow of this UE occurs, when TNL relieve congestion that the data flow of determining this UE occurs, this UE is added incomplete congested set, and trigger the first detecting unit and monitor the data flow of retention time of intermediate variable corresponding to this UE and this UE whether TNL to occur congested;
The second scheduling unit is used for the UE for congested set, and the intermediate variable corresponding according to this UE is this UE distribute data transfer resource.
10. base station according to claim 9, is characterized in that, described scheduling processing unit also comprises:
The 3rd scheduling unit is used for the UE for non-congested set, and the real cache size according to this UE is this UE distribute data transfer resource.
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| CN103067968B (en) * | 2011-10-19 | 2016-08-10 | 鼎桥通信技术有限公司 | A kind of method preventing frame protocol step-out |
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