CN101060690A - A method and device for realizing the dynamic QoS control during the dispatching of HSUPA base station - Google Patents
A method and device for realizing the dynamic QoS control during the dispatching of HSUPA base station Download PDFInfo
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Abstract
The related method for dynamic scheduling QoS in HSUPA BS comprises: using reported state message from user, message measured by BS and the configuration message in BS controller, applying delay control and/or speed control, and realizes the fast scheduling for dynamic grouping business. This invention can treat all QoS control problems in RNC and UE, reduces dependence on RNC, and improves wireless resource utility.
Description
Technical field
The present invention relates to UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system), especially refer in the base station scheduling of UTRAN (UMTS Terrestrial Radio Access Network, UMTS grounding wireless access network), realize the method and the device of dynamic QoS control.
Background technology
UTRAN is made up of subscriber equipment (UE), base station (Node B) and RNC (Radio network controller, radio network controller), and the protocol architecture of wave point (UE-UTRAN) is divided into physical layer, data link layer; RNC is responsible for the management to various interface, bears RRM (RRM); Node B is controlled by RNC, finish the code conversion between RNC and the wireless channel, realize that relevant treatment such as wireless channel between wave point and physical layer encoded, interweaved, rate-matched and spread spectrum etc., (release 6 at R6, the 6th version), as being responsible for up packet scheduling function among the enhanced dedicated E-DCH.
Data link layer comprises two sublayers, that is: MAC (Medium Access Control, the medium access control) layer and RLC (Radio Link control, Radio Link control) layer, in the MAC layer, be implemented as the mapping between the transmission channel that logic channel that rlc layer provides and physical layer provide, and be that each transmission channel is selected suitable transformat (TF) according to the resource speed of logic channel.
In UTRAN, defined four kinds of basic service types: session service, stream class service, interaction service, background class traffic, and when UMTS provides bearer service for each service class, need keep QoS (Qualityof Service, service quality).
Usually, QoS can be characterized by measurable parameter usually: the time interval-time delay that (1) sends and accepts; (2) transmission rate of business in the network; (3) packet loss; (4) professional validity.
In current UTRAN R6, introduced the HSUPA (High speed uplink packet access, high speed uplink packet inserts) that is used for the data rate in upstream packet territory is strengthened, improves user experience.The support of the QoS of Packet Service is directly influenced the application of HSUPA, and 3GPP has defined the QoS controlling mechanism based on RNC, but this static relatively or quasi-static control has influenced the utilization ratio of Radio Resource greatly.In addition, when the packet scheduling function was on Node B, the control that strengthens QoS in scheduler can guarantee professional QoS better when improving efficiency of resource.Yet, because how the only limited QoS of survice information of Node B realizes that at scheduler QoS control is the emphasis and the difficult point of the research of NodeB scheduler always.
Adopted strategy among the HSUPA, and in base station and terminal, introduced corresponding uplink and downlink signaling thereupon and supported this strategy based on the scheduling of Node B (base station).
The last line command of the HSUPA relevant with scheduling process is included in the satisfaction bit (Happy bit) of transmission among the E-DPCCH (enhancement mode Dedicated Control Channel).
The downlink signaling relevant with scheduling process mainly comprises the relative order (RG, Relative Grant) that is used for progressively adjusting user resources.
3GPP standardization body has defined following method and realized distributed QoS control in HSUPA (or E-DCH) at present:
One of method selects to carry out the priority rate scheduling by E-TFC (combinations of transport formats) in UE;
Two of method, configuration by distinguishing non-scheduled transmission (NST) and scheduled transmission (ST) in RNC and regulate by exterior ring power control (Outer Loop Power Control) that the property file (profile) of the HARQ (Hybrid automatic retransmissionrequest mixes automatic repeat requests) that benchmark E-TFCI (combinations of transport formats indication) and every MAC-d flow realizes.
Yet,, in the ETFC based on UE selects, only consider the priority of logic channel for method one.Though this method has been distinguished relative priority, the QoS information that does not fundamentally guarantee service is as postponing.
For method two, in RNC with E-DCH (Enhanced dedicate channel, strengthen dedicated transmission channel) among the relevant RRM, regulate the control of QoS by the HARQ attribute that every MAC-d stream is set, yet the method for this control QoS has just been controlled the retransmission features of HARQ well, between be connected in the scheduler and introduce QoS control, can control packet loss and average repeat time well, but can't control the QoS of survice such as latency delays and minimum bit rate preferably, the control method based on RNC has bigger delay in addition.In addition, if pass through map of services to NST, will waste local resource, because base station scheduling and not responsible NST go up professional scheduling.
Therefore, QoS among current HSUPA control is distributed among RNC, the UE, and the parameter that base station dispatcher is only supported among the RNC to be disposed is dispatched, and should also not have the scheme of the perfect QoS that manages business in the scheduler of current base station control.
Based on what in the feasibility study of 3GPP TR25.896, point out about enhancing UTRA FDD up link, can make systematic function (as sub-district throughput, delay) improve 50～70% by the scheduler that uses base stations control, therefore should reduce the QoS method of using non-scheduled transmission support service, strengthen base station dispatcher QoS is supported to enlarge schedulable Packet Service scope, thereby realize the raising of systematic function.
The present invention is just under above-mentioned technical background, and the base station scheduling that has proposed to be used for HSUPA is realized the method for dynamic QoS control and the technical scheme of device.
Summary of the invention
The present invention aims to provide the base station scheduling of a kind of HSUPA of being used for and realizes method and the device that dynamic QoS is controlled, and to guarantee the QoS of Packet Service on statistics, improves the utilization ratio of Radio Resource.
Realize the method for dynamic QoS control in a kind of base station scheduling provided by the present invention, it is characterized in that: in base station scheduling, be used to from user's terminal to report state information, base station measurement to information and the configuration information of base station controller in the information relevant with QoS, by postponing control and/or rate controlled, regulate dispatching command apace, with the fast dispatch of the QoS of dynamic realization Packet Service control.
In above-mentioned dynamic QoS control method, its rate controlled is: the base station is dynamically directly regulated fast the minimum resource allocation order and/or is passed through to regulate dispatching priority according to the measurement bit rate and the QoS configuration information of each radio bearer in this user terminal, obtaining more resources, and the Resource Commands that will be assigned at last is sent to UE by the physical layer signaling channel.
In above-mentioned dynamic QoS control method, the physical layer signaling channel is E-AGCH (an absolute command channel).
In above-mentioned dynamic QoS control method, its delay is controlled to be: the base station make full use of " happy bit " information of user terminal to send up and fast RG order the resource of dynamically adjusting user terminal.
The present invention also provides the device of realizing dynamic QoS control in a kind of base station scheduling, based on the base station dispatcher body, it is characterized in that: comprise postponing control module and/or rate controlled module, postpone control module, be used for by the collection and the descending scheduling order fast of deferred message fast, strengthen professional delay control,, prevent the data packet loss and improve in scheduling support the QoS of business to satisfy the low requirement that postpones Packet Service; The rate controlled module, be used for speed statistics, base station controller or/and the rate information relevant of system configuration management devices configuration with QoS of survice by the UE actual transmissions, in base station scheduling, dynamically adjust the Radio Resource of corresponding UE apace, the Radio Resource order that is assigned at last is sent to UE by the physical layer signaling channel.
In above-mentioned device, the deferred message that the delay control module is gathered comprises " happy bit " information, and the descending scheduling order comprises the RG order.
In above-mentioned device, the physical layer signaling channel is E-AGCH.
In above-mentioned device, the rate controlled module comprises the first Timing Processing device and the second Timing Processing device that is attached thereto, wherein: the first Timing Processing device, comprise first timer, be used for regularly triggering the reporting of measurement bit rate of statistics user terminal transmission, promptly when first timer overflows, obtain user terminal actual transmissions statistical conditions in the base station scheduling in this period; The second Timing Processing device, comprise second timer, be used for regularly triggering the adjustment to smallest allocation resource Rmin, promptly base station dispatcher upgrades smallest allocation resource Rmin and/or adjusts dispatching priority of users when second timer overflows, to obtain more Radio Resource.
In above-mentioned device, first timer and second timer can adopt same timer.
In above-mentioned device, postpone control module and comprise acquisition module and the adjusting module that is attached thereto, wherein: acquisition module is used for the collection fast to the happy bit deferred message state of UE report; Adjusting module is used for dynamically adjusting wireless resource allocation relatively by RG according to the satisfaction or the dissatisfied state of happy bit.
Adopted above-mentioned technical solution, can keep the QoS control among all RNC and the UE, and strengthened simultaneously that scheduler makes UTRAN can support to have the Packet Service of qos requirement better to the control of QoS in the base station; Perhaps, utilize the base station dispatcher that strengthens QoS control, the static or semi-static control that the RNC that can reduce influences system performance gain does for the control to QoS.The present invention has strengthened the support of base station dispatcher to the QoS of Packet Service greatly by postponing control module and rate controlled module, has reduced the dependence to radio network controller (RNC), has further improved the utilization ratio of Radio Resource.
Description of drawings
Fig. 1 is the flow chart of rate controlled among the present invention;
Fig. 2 is the structured flowchart of speed control module among the present invention;
The flow chart that postpones control among Fig. 3 the present invention;
Fig. 4 is the structured flowchart that postpones control module among the present invention.
Embodiment
One of the present invention, it is the method that realizes dynamic QoS control in the base station scheduling, be characterized in: in base station scheduling, be used to from user's terminal to report state information, base station measurement to information and the configuration information of base station controller in the information relevant with QoS, through-rate control, regulate dispatching command apace, with the fast dispatch of the QoS of dynamic realization Packet Service control.
In rate controlled, minimum resource allocation order (Rmin is come dynamically directly to regulate fast according to the measurement bit rate and the QoS configuration information of each radio bearer in this user terminal in the base station, each user terminal must guarantee the Radio Resource that obtains when any user terminal obtains more Radio Resources) and/or obtain more resources by regulating dispatching priority (scheduler can give the user allocation of radio resources according to this according to dispatching priority), and the Resource Commands that will be assigned at last is sent to UE by physical layer signaling channel (as E-AGCH).
Detailed process is as follows:
Referring to Fig. 1, carry UE for each with QoS business, rate controlled comprises the following steps:
Initialization step: timer 1 (as 100ms), timer 2 (as SP, SP is dispatching cycle); Set flag bit Flg=0; Rmin is the mGbr (minimum guaranteed bit rate, the minimum bit rate that guarantees) of system configuration, and Rmin:=mGbr is set;
First regularly triggers step:
Trigger timer 1 (trigger condition be timer 1 then), beginning PBR measures as follows: the bit rate PBR of the logic channel of each priority among the base station measurement UE, and obtain by following formula:
The bit rate sum of all logic channels of PBR:=same priority (that is: Sum{PBR
i);
Relatively export step: the size that compares PBR and mGbr:
If PBR＞mGbr then is provided with flag bit Flg:=Flg+1;
If PBR＜mGbr then is provided with Flg:=Flg-1;
If PBR=mGbr then is provided with Flg:=Flg;
Second regularly triggers step:
At first judge when whether first timing value equals second timing value, if trigger the Rmin program of regulating; If not, then then, trigger the Rmin program of regulating at second timing value;
Regulate the Rmin step:, then further judge in described flag bit Flg＞0 of relatively exporting the output in the step o'clock:
If Flg＞=threshold value Th1 (on the occasion of) time, be provided with reduce UE dispatching priority for " dispatching priority-M of UE " with Rmin:=Rmin-step_sizeA*Flg is set; If not, Rmin:=Rmin-step_sizeA*Flg then directly is set;
For in described Flg＜0 of relatively exporting the output in the step o'clock, then further judge:
If during Flg＜=threshold value Th2 (negative value), be provided with increase UE dispatching priority for " dispatching priority+P of UE " with Rmin:=Rmin-Step_sizeB*Flg (Flg is a negative value) is set; If not, Rmin:=Rmin-Step_sizeB*Flg then directly is set;
Wherein: Step_sizeA, Step_sizeB, Th1, Th2, M, P are system configuration parameters, that is:
Step_sizeA, Step_sizeB on the occasion of: be used to the command step that increases or reduce;
Th1 (on the occasion of), Th2 (negative value) is: the threshold value that limits the dispatching priority whether need to regulate UE;
M, P is: regulate the step-length of dispatching priority, concrete parameter can be determined by emulation.
If base station dispatcher does not adopt priority, then the step of the judgement of threshold value TH1 and Th2 and adjusting priority can be saved.
The present invention's two promptly realizes the device that dynamic QoS is controlled in the base station scheduling, comprise based on the rate controlled module 101 on the base station dispatcher 100.This rate controlled module 101, be used for speed statistics, base station controller or/and the rate information relevant of system configuration management devices configuration with QoS of survice by the UE actual transmissions, in base station scheduling, dynamically adjust the Radio Resource of response UE apace, with the Radio Resource order that is assigned at last by the physical layer signaling channel (as, E-AGCH) be sent to UE.
In base station dispatcher, the rate controlled module is introduced smallest allocation resource (Rmin) for each user terminal in order to support the QoS scheduling in resource allocation, defined the least resource that this user terminal should obtain.Rmin is dynamically adjusted according to the measurement bit rate of user terminal by base station dispatcher, and its initialization value can be made as the QoS information of configuration.
Participate in Fig. 2, this rate controlled module 101 comprises the first Timing Processing device 102 and the second Timing Processing device 103 that is attached thereto, wherein:
The first Timing Processing device 102 comprises first timer, is used for regularly triggering the reporting of measurement bit rate of statistics user terminal transmission, promptly obtains the user terminal actual transmissions statistical conditions in this period in the base station scheduling when first timer overflows;
The second Timing Processing device 103 comprises second timer, is used for regularly triggering smallest allocation resource R
MinAdjustment, promptly base station dispatcher upgrades smallest allocation resource R when second timer overflows
MinAnd/or the adjustment dispatching priority of users, to obtain more Radio Resource.
First timer and second timer can be made as independently, also can use same timer.
The present invention's three, it is the method that realizes dynamic QoS control in the base station scheduling, be characterized in: in base station scheduling, be used to from user's terminal to report state information, base station measurement to information and the configuration information of base station controller in the information relevant with QoS, by postponing control, regulate dispatching command apace, with the fast dispatch of the QoS of dynamic realization Packet Service control.
In postponing control, the base station make full use of " happy bit " information of user terminal to send up and fast the RG signaling dynamically adjust the resource of user terminal." happy bit " information comprises the delay condition of RRC (radio resource controller) configuration, and user terminal can be reported to the base station at each TTI, and the service RG (relative order) in the base station dispatcher also is that each TTI can send to UE." happy bit " report can be added up in the base station, can be used for the Radio Resource of UE according to the deferred message of accumulating (" happy bit " report) corresponding increase or minimizing, thereby directly responds this " happy bit ".
Referring to Fig. 3, carry UE for each with QoS business, postpone control and comprise the following steps:
Initialization: happy bit number=0;
At E-DPCCH (enhancement mode Dedicated Control Channel) Channel Detection " happy bit " state;
If happy bit is dissatisfied " unhappy " (hint: delay can be expanded the demand of QoS related service), then: it is to raise that service RG order (S_RG) is set, that is: S_RG:=UP; It is 0 that the happy bit number is set;
Otherwise: the happy bit number is set increases by 1; Then, further judge: if the happy bit number is more than or equal to threshold value Th3:
If: service RG order is set for reducing, that is: S_RG:=DOWN, and the happy bit number is set is 0;
If not: service RG order is set for constant, that is: S_RG=KEEP;
Send service RG to UE, that is: transmit S_RG to UEs.
Wherein: Th3 is configurable, and it can be used for controlling the frequency that sends reduction service RG order when UE is in " satisfaction " state, to avoid reducing too quickly the resource of UE, postpones thereby prolong.
The present invention's four promptly realizes the device that dynamic QoS is controlled in the base station scheduling, comprise based on the delay control module 201 on the base station dispatcher body 200.
Postpone control module 201, be used for, strengthen professional delay control,, prevent data packet loss and raising support in scheduling the QoS of business to satisfy the low requirement that postpones Packet Service by collection and the descending scheduling order fast of deferred message fast.
Referring to Fig. 4, postpone control module 201 and comprise acquisition module 202 and the adjusting module 203 that is attached thereto, wherein:
Adjusting module 203 is used for dynamically adjusting wireless resource allocation relatively by RG according to the satisfaction or the dissatisfied state of happy bit.
In sum, dynamic QoS control features and the advantage in the base station:
Dynamic QoS in base station control further strengthened-and base station dispatcher is to the support of Packet Service, can avoid too many NST (non-scheduled transmission) configuration of E-DCH, it has improved allocation efficiency of resource (because NST belongs to non-scheduling, more conservative on resource is used).Wherein, the base station dispatcher of supporting rate control can statistical significance on the data rate of priority service on the control E-DCH, the dynamic rate controlled of two-stage acts on practical application to guarantee quick response simultaneously; And the base station dispatcher of supporting to postpone control can be concerned about the delay situation that partly has the service of QoS demand, makes full use of S_RG (service RG order) and comes the quick distribution of dynamically adjusting resource to satisfy the demand of Packet Service.
Therefore, the present invention program makes the HSUPA base station dispatcher can carry out QoS control rather than the control by RNC correspondingly keeps QoS (practical operation is controlled) in RNC, and in the dynamic QoS control of base station, HSUPA can support the QoS as the Packet Service demand better.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong within the category of the present invention, should be limited by each claim.
Claims (10)
1. realize the method that dynamic QoS is controlled in a base station scheduling, it is characterized in that:
In base station scheduling, be used to from user's terminal to report state information, base station measurement to information and the configuration information of base station controller in the information relevant with QoS, by postponing control and/or rate controlled, regulate dispatching command apace, with the fast dispatch of the QoS of dynamic realization Packet Service control.
2. dynamic QoS control method according to claim 1 is characterized in that:
In rate controlled, the base station is dynamically directly regulated fast the minimum resource allocation order and/or is passed through to regulate dispatching priority according to the measurement bit rate and the QoS configuration information of each radio bearer in this user terminal, obtaining more resources, and the Resource Commands that will be assigned at last is sent to UE by the physical layer signaling channel.
3. dynamic QoS control method according to claim 2 is characterized in that: described physical layer signaling channel is E-AGCH.
4. dynamic QoS control method according to claim 1 is characterized in that:
In postponing control, the base station make full use of " happy bit " information of user terminal to send up and fast RG order the resource of dynamically adjusting user terminal.
5. realize the device that dynamic QoS is controlled in a base station scheduling,, it is characterized in that based on the base station dispatcher body: comprise postponing control module and/or rate controlled module,
Postpone control module, be used for, strengthen professional delay control,, prevent data packet loss and raising support in scheduling the QoS of business to satisfy the low requirement that postpones Packet Service by collection and the descending scheduling order fast of deferred message fast;
The rate controlled module, be used for speed statistics, base station controller or/and the rate information relevant of system configuration management devices configuration with QoS of survice by the UE actual transmissions, in base station scheduling, dynamically adjust the Radio Resource of corresponding UE apace, the Radio Resource order that is assigned at last is sent to UE by the physical layer signaling channel.
6. device according to claim 5 is characterized in that: the deferred message that described delay control module is gathered comprises " happy bit " information, and the descending scheduling order comprises the RG order.
7. device according to claim 5 is characterized in that: described physical layer signaling channel is E-AGCH.
8. device according to claim 5 is characterized in that: described rate controlled module comprises the first Timing Processing device and the second Timing Processing device that is attached thereto, wherein:
The first Timing Processing device comprises first timer, is used for regularly triggering the reporting of measurement bit rate of statistics user terminal transmission, promptly obtains the user terminal actual transmissions statistical conditions in this period in the base station scheduling when first timer overflows;
The second Timing Processing device, comprise second timer, be used for regularly triggering the adjustment to smallest allocation resource Rmin, promptly base station dispatcher upgrades smallest allocation resource Rmin and/or adjusts dispatching priority of users when second timer overflows, to obtain more Radio Resource.
9. device according to claim 8 is characterized in that: described first timer and second timer can adopt same timer.
10. device according to claim 5 is characterized in that: described delay control module comprises acquisition module and the adjusting module that is attached thereto, wherein:
Acquisition module is used for the collection fast to the happy bit deferred message state of UE report;
Adjusting module is used for dynamically adjusting wireless resource allocation relatively by RG according to the satisfaction or the dissatisfied state of happy bit.
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