CN1856165A - Method for arranging non-realtime business - Google Patents
Method for arranging non-realtime business Download PDFInfo
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Abstract
The invention is concerned with the non-real-time operation dispatch method, it includes: A) receives the survey report, estimates the type of the survey report according to the taking survey mark of the receiving survey report; processes the step B if it is the survey report of the portfolio; processes the step C if it is the survey report of the link quality; B) reads the current portfolio of the mobile platform from the receiving portfolio survey report, returns and processes the step A according to the plot state mark and the link state mark to confirm whether or not to increase the non-real-time operation transmitting speed of the mobile platform when confirm the read portfolio is high than the normal range; C) renews the link stat mark according to the receiving link quality survey report, confirms whether or not increase the non-real-time operation transmitting speed of the link according to the plot state mark and the speed decreasing mark position when the link state mark and the last link state mark confirms the state is better, and returns to process step A.
Description
Technical field
The present invention relates to the Radio Resource adjustment technology, relate in particular to the dispatching method of the non-real-time service in a kind of mobile communication system.
Background technology
In the third generation (3G) communication system, according to the different delay requirement of all kinds of business, be four classes: such as the session service of voice call and fax etc., such as the stream class service of video request program, such as the interaction service of database retrieval and such as the background business of Email with delineation of activities.Wherein interaction service and background business belong to non-real-time service.Compare with other types of service, the delay requirement of non-real-time service is looser, therefore system can regulate the employed Radio Resource of UE according to current resource situation, for example: can alleviate the situation of current resource anxiety by reducing the speed of non-real-time service; In addition, non-real-time service has sudden, so system can regulate the employed Radio Resource of each UE according to the current bandwidth demand of non-real-time service.In a word, the final purpose that non-real-time service is carried out scheduling of resource is to improve resource utilization under the prerequisite that satisfies user QoS demand.
As shown in Figure 1, in the wireless access network of existing realization non-real-time service, RNS (RNS) links to each other with travelling carriage (UE) by the Uu interface, links to each other with core net (CN) by the Iu interface, so that UE can be linked among the CN by RNS, enjoy the service that non-real-time service provides.Wherein, RNS is made up of the radio network controller (RNC) and base station (NodeB) that link to each other by Iub interface.
Use the non-real-time service that wireless communication system the carried out scheduling of above-mentioned network to comprise three kinds of methods: based on the scheduling of cell load, based on the scheduling of traffic carrying capacity and based on the scheduling of link-quality.Wherein the scheduling based on cell load is meant, occurs the non-real-time service transmission rate of UE in this sub-district being adjusted when congested owing to load is excessive in the sub-district; And after cell load reaches normal condition again, recover trained non-real-time service transmission rate.Scheduling based on traffic carrying capacity is meant, the data volume of the non-real-time service that will send or receive as UE when promptly traffic carrying capacity rises to a certain degree, increases the employed Radio Resource of above-mentioned non-real-time service; When the traffic carrying capacity of non-real-time service is reduced to a certain degree, reduce Radio Resource.Scheduling based on link-quality is meant, when up or downlink quality take place to worsen, by reducing the transmission rate of this link, adapts to the current link quality situation.Specify the detailed process of above-mentioned three kinds of dispatching methods in the prior art below.
In existing non-real-time service dispatching method, set in advance cell load Upper threshold and cell load Lower Threshold based on cell load.When cell load is higher than this Upper threshold, show that the sub-district is in congestion state, need reduce the transmission rate of non-real-time service in this sub-district; When the cell load that is in congestion state is reduced to Lower Threshold when following again, show that this sub-district has returned to normal condition, the non-real-time service transmission rate that then will once be lowered is recovered up.
As shown in Figure 2, existing non-real-time service dispatching method based on cell load may further comprise the steps:
Step 201.RNC is initialized as the cell status at the current place of UE normally.
That sets up in the sub-district is initial, and RNC is this distributing wireless resources for cells, guarantees that the load of sub-district is in normal condition.
Step 202～204. receives the cell load measurement reports, and judges the current area Upper threshold that whether overloads of loading according to measurement report, if judge that then the sub-district is in congestion state; Otherwise, return execution in step 202.
NodeB monitors the sub-district of self administering herein, and the load of this sub-district is write in the cell load measurement report, sends to RNC.After RNC receives the cell load measurement report, wherein cell load is extracted, and judge whether this cell load is higher than the cell load Upper threshold that sets in advance, if then need the transmission rate adjustment is carried out in the sub-district that has non-real-time service; Otherwise this sub-district is in normal condition, need not the transmission rate adjustment is carried out in the sub-district that has non-real-time service.
In addition, in order to make RNC can discern received measurement report, in the cell load measurement report, carry the measurement sign that shows the measurement report type.
Step 205～206. judge whether there is non-real-time service in this sub-district, if then reduce the transmission rate of non-real-time service in this sub-district according to cell measurement reporting; Otherwise, return execution in step 202.
Because all there is the service code that shows the own service type in every kind of business, therefore RRM (RRM) module among the RNC judges whether there is non-real-time service in this sub-district according to service code herein.Exist under the situation of non-real-time service,, reducing the transmission rate of non-real-time service according to the difference between cell load in the measurement report and the cell load Upper threshold.Particularly, the transmission rate of the load correspondence of desire adjustment can be divided into a plurality of class, reduce a class at every turn; Also can finish the downward modulation of non-real-time service transmission rate by once-through operation.In addition, all there is priority in every kind of non-real-time service, then when reducing transmission rate, begins downward modulation from the low non-real-time service of priority earlier.
Step 207～210. receive the cell load measurement report, and judge according to measurement report whether current area load is lower than the load Lower Threshold, if judge that then the sub-district is in normal condition, and improve the transmission rate of the non-real-time service once reduced, return execution in step 202; Otherwise, return execution in step 207.
After receiving the cell load measurement report that comes from NodeB once more as RNC, current cell load entrained in this measurement report is read out, and compare with predefined load Lower Threshold.If the cell load in the measurement report is lower than the load Lower Threshold, promptly the sub-district is in normal condition, and the difference between the Lower Threshold according to cell load in the measurement report and load then adjusts upward the speed of the non-real-time service once reduced.The method of reducing speed in the method that this place raises speed and the step 206 is similar, the transmission rate of the load correspondence of desire adjustment can be divided into a plurality of class, raises a class at every turn; Also can finish the rise of non-real-time service transmission rate by once-through operation.In addition, in the raising rate process herein, begin to raise from the high non-real-time service of priority earlier.
So far, finished non-real-time service scheduling process based on cell load.
The following describes non-real-time service dispatching method based on traffic carrying capacity.
Existing non-real-time service dispatching method based on traffic carrying capacity mainly is the non-real-time service data volume that the non-real-time service data volume that will send based on a certain UE or RNC will send to this UE.In this method, precompute traffic carrying capacity Upper threshold and Lower Threshold.In the time of within the traffic carrying capacity of reality is in the scope that traffic carrying capacity Lower Threshold and traffic carrying capacity Upper threshold constituted, show that current Radio Resource can satisfy the demand of UE, need not the non-real-time service transmission rate of this UE is adjusted; When the traffic carrying capacity overflow Upper threshold of reality or when being lower than the traffic carrying capacity Lower Threshold, then must improve or reduce the non-real-time service transmission rate of this UE.
The reference value of supposing the traffic carrying capacity Upper threshold is that the reference value of A, traffic carrying capacity Lower Threshold is B, and the method for then existing definite traffic carrying capacity Upper threshold and traffic carrying capacity Lower Threshold is:
A＝(1-μ)·v
BRU·λ·(T
delay-τ)
B＝(1-μ)·v
BRU·λ·(T
delay-τ)·η
Wherein, μ represents the average frame error rate of this traffic set, v
BRURepresent the maximum rate that a basic radio resource unit (BRU) can transmit, λ represents to distribute to this professional BRU quantity, T
DelayRepresent the propagation delay time that this business is allowed in wireless access network, τ represents such as processing delay sums such as measurement report, inter-process, signaling affirmations, and η represents to wish the wireless resource utility efficiency that reaches.
After obtaining traffic carrying capacity Upper threshold reference value and traffic carrying capacity Lower Threshold reference value, to get traffic carrying capacity upper limit threshold value and be [A], traffic carrying capacity lower limit threshold value is [B].Wherein, symbol [x] expression is got less than x and is approached x most and the centrifugal pump of protocol compliant regulation.For example: when A is 100, when B is 50, the traffic carrying capacity Upper threshold can be defined as 80,90 etc., the traffic carrying capacity Lower Threshold is defined as 34,40 etc.Generally, the traffic carrying capacity Upper threshold is greater than the numerical value of traffic carrying capacity Lower Threshold.
Determined after traffic carrying capacity Upper threshold and the traffic carrying capacity Lower Threshold, just can realize the scheduling of non-real-time service according to the traffic carrying capacity of UE.As shown in Figure 3, the dispatching method of existing non-real-time service based on traffic carrying capacity comprises the steps:
Step 301.RNC receives the measuring business volume report.
In 3G network, be upstream traffic to the traffic carrying capacity that network side sends from UE; The traffic carrying capacity that mails to UE from network side is a downlink traffic.Usually, UE is by measuring the transmission channel traffic carrying capacity of self sending (TCTV), and realizes the measurement to the upstream traffic of self, and by NodeB the out-hole run report sent to RNC; RNC realizes measurement to the downlink traffic of this UE by measuring the TCTV that self sends to UE, and generates the downlink traffic measurement report.That is: for RNC, receive the upstream traffic measurement report that comes from UE, receive the downlink traffic measurement report that self produces.And, no matter be at the upstream traffic measurement report or in the downlink traffic measurement report, all carry the measurement sign that shows the measurement report type, so that RNC can discern the measurement report that receives.
Whether the traffic carrying capacity that current UE is judged according to measuring business volume report in step 302～303. the overflow Upper threshold, if then improve the non-real-time service transmission rate of this UE, and return execution in step 302; Otherwise, execution in step 304.
RNC reads up or downlink traffic from up or downlink traffic measurement report, and traffic carrying capacity and the traffic carrying capacity Upper threshold that reads compared.If the traffic carrying capacity that reads is greater than the traffic carrying capacity Upper threshold, show the Radio Resource deficiency that this UE is required, then according to traffic carrying capacity in the measuring business volume report and the difference between the traffic carrying capacity Upper threshold, the transmission rate of the upstream or downstream non-real-time service by improving this UE increases Radio Resource.Usually the method that improves this UE non-real-time service transmission rate is: RNC is at first according to traffic carrying capacity in the measuring business volume report and the definite Radio Resource that will adjust of the difference between the traffic carrying capacity Upper threshold, then indicate UE under the CELL_DCH state for the user increases Radio Resource, perhaps from taking the few state exchange of Radio Resource to taking the more state of resource.For example: UE from cell forward access channel (CELL_FACH) state exchange to cell private channel (CELL_DCH) state.
The RNC up or downlink traffic and the traffic carrying capacity Lower Threshold that will read from up or downlink traffic measurement report compares herein.If the traffic carrying capacity that reads is less than the traffic carrying capacity Upper threshold, show that the required Radio Resource of this UE is less, be that the current Radio Resource of distributing to this UE occurs redundant, then, reduce Radio Resource by the upstream or downstream non-real-time service amount that reduces this UE according to traffic carrying capacity in the measuring business volume report and the difference between the traffic carrying capacity Lower Threshold.Usually the method that reduces this UE non-real-time service transmission rate is: RNC is at first according to traffic carrying capacity in the measuring business volume report and the definite Radio Resource that will adjust of the difference between the traffic carrying capacity Lower Threshold, then indicate UE under the CELL_DCH state, to reduce shared Radio Resource, perhaps from taking the many state exchanges of Radio Resource to taking the resource less state.For example UE to the CELL_FACH state, is transformed into cell paging channel (CELL_PCH) state or global local wireless access net registration area paging channel (URA_PCH) state from the CELL_DCH state exchange again.
In the practical application, has only the non-real-time service of having confirmed to exist at this UE, just trigger non-real-time service dispatching method, so this is in and improves or reduce before the non-real-time service transmission rate, need not whether existing non-real-time service to judge based on traffic carrying capacity.
So far, finished existing non-real-time service scheduling process based on traffic carrying capacity.
The following describes non-real-time service dispatching method based on link-quality.
At existing non-real-time service dispatching method based on link-quality mainly with the link-quality between UE and the NodeB as the basis of adjusting non-real-time service transmission rate on this link.According to the agreement regulation, the link from UE towards the NodeB direction is called up link, the link that leads to the UE direction from NodeB is called down link.In the network operation process of reality, NodeB can measure the quality of up link, and UE can measure the quality of down link.
As shown in Figure 4, existing non-real-time service dispatching method based on link-quality may further comprise the steps:
Uplink quality can adopt signal interference ratio (SIR) to weigh, so NodeB is carried on it in uplink quality measurement report, and sends to RNC through after measuring the sir value on the UE up link; And the criterion of downlink quality can be Block Error Rate (BLER), and then UE is carried on NodeB in the downlink quality measurement report to the BLER value of the down link of self, sends to RNC by NodeB.That is: for RNC, receive the uplink quality measurement report that comes from NodeB, receive the downlink quality measurement report that comes from UE.And, no matter be at the uplink quality measurement report or in the downlink quality measurement report, all carry the measurement sign that shows the measurement report type, so that RNC can discern the measurement report that receives.
If RNC receives the uplink quality measurement report, then sir value is wherein extracted, and compare with the uplink quality Lower Threshold that sets in advance, if the sir value that extracts is less than the uplink quality Lower Threshold, show that then situation about worsening has appearred in this link-quality, therefore adapt to this current link circuit condition by the transmission rate that reduces the up non-real-time service on this link.
If RNC receives the downlink quality report, then BLER value is wherein compared with the downlink quality Upper threshold that sets in advance, if BLER is greater than the downlink quality Upper threshold, show that then this link-quality worsens, therefore reduce the transmission rate of the descending non-real-time service on this link, to adapt to current link circuit condition.
In the practical application, have only and confirmed to have non-real-time service on this link, just trigger non-real-time service dispatching method, so this is in and reduces before the non-real-time service transmission rate, need not whether existing non-real-time service to judge based on link-quality.
In order to reduce the transmission rate of non-real-time service on this link, RNC at first calculates the difference between SIR entrained in the links quality measurement reports and predefined uplink quality Lower Threshold or BLER and the downlink quality Upper threshold.Descend timing, the transmission rate of the link-quality correspondence of desire adjustment can be divided into a plurality of class, reducing a class at every turn; Also can finish the downward modulation of non-real-time service transmission rate by once-through operation.
So far, finished the scheduling process of existing non-real-time service based on link-quality.
The dispatching method of above-mentioned three kinds of existing non-real-time services has different scheduling standards, is applied in the multiple different occasion.For example: use paying close attention under the whether congested situation in sub-district based on the dispatching method of cell load, use when paying close attention to the wireless resource allocation situation based on the dispatching method of traffic carrying capacity, and when paying close attention to wireless link condition, use based on the scheduling of link-quality.But there is following shortcoming in the dispatching method of existing non-real-time service:
1. be merely able to be applied in a kind of single occasion owing to every kind of existing non-real-time service dispatching method, and can't take into account multiple scheduling standard, and then may make adjusted network condition develop towards the direction that worsens.For example: when simple when non-real-time service being adjusted based on traffic carrying capacity, if the measuring business volume report shows in the time of need distributing more resources for UE, then need to raise speed for UE, this moment, the link-quality of this UE may worsen, the transmission rate that then improves non-real-time service in this case may reduce the Radio Resource service efficiency, can't adapt to current link circuit condition.
2. in the computing formula of existing traffic carrying capacity Upper threshold and Lower Threshold, the average frame error rate of this business that μ is represented is a statistical value, need be according to obtaining through a large amount of statisticses; And v
BRURepresent the maximum rate that BRU can transmit,, be one and be difficult for definite amount with the relating to parameters such as modulation, coded system, punching rate and rate matching attribute of physical layer.Therefore the factor that will consider for the computing formula of existing traffic carrying capacity Upper threshold and Lower Threshold is more, calculates comparatively complexity.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of non-real-time service dispatching method that can take into account multiple scheduling standard.
For achieving the above object, the invention provides a kind of dispatching method of non-real-time service, setting show the cell status sign of the current load condition in sub-district, travelling carriage place, this link-state identification that shows link-quality that travelling carriage uses and last time link-state identification and show that the speed of reducing transmission rate on this link reduces flag bit, this method may further comprise the steps:
A. receive measurement report, and judge the type of this measurement report according to the measurement sign of carrying in the reception measurement report; If measuring business volume report, then execution in step B; If links quality measurement reports, then execution in step C;
B. from the measuring business volume report that receives, read the current business amount of travelling carriage, when the traffic carrying capacity of determining to read is higher than normal range (NR), according to the cell status sign of this current sub-district of living in of travelling carriage and this link-state identification of this travelling carriage, determine whether to improve the non-real-time service transmission rate of this travelling carriage, and return execution in step A;
C. according to the links quality measurement reports that receives, upgrade this link-state identification, according to this link-state identification with when last time, link-state identification determined that Link State improves, according to cell status sign and speed downward modulation flag bit, determine whether to improve the transmission rate of non-real-time service on this link, and return execution in step A.
Wherein, after reading the current business amount of this travelling carriage, described step B further comprises:
When the traffic carrying capacity of determining to read is lower than normal range (NR), reduces the non-real-time service transmission rate of this travelling carriage, and return execution in step A;
When the traffic carrying capacity of determining to read is in normal range (NR), return execution in step A.
Wherein, traffic carrying capacity Upper threshold and traffic carrying capacity Lower Threshold are set, the closed interval of then described normal range (NR) for constituting by traffic carrying capacity Upper threshold and traffic carrying capacity Lower Threshold.
Wherein, the described method that determines whether to improve the non-real-time service transmission rate of this travelling carriage of step B is:
Judge according to the cell status sign whether the state of this sub-district, travelling carriage place is normal, and judge according to this link-state identification whether the employed link of this travelling carriage is in normal condition, if all be in normal condition, then, improve the non-real-time service transmission rate of this travelling carriage according to traffic carrying capacity that reads and the difference between the described traffic carrying capacity Upper threshold; Otherwise, do not change the non-real-time service transmission rate of this travelling carriage.
Wherein, described raising or the method that reduces the non-real-time service transmission rate of this travelling carriage are:
At first according to traffic carrying capacity that reads and the definite Radio Resource that will increase or reduce of the difference between traffic carrying capacity Upper threshold or the traffic carrying capacity Lower Threshold, the travelling carriage of RNC indication then increases or reduces Radio Resource under the cell-specific state, perhaps from taking the few or many state exchanges of Radio Resource to taking the many relatively or few relatively state of resource.
Wherein, described traffic carrying capacity Upper threshold and traffic carrying capacity Xiamen are limited to upstream traffic Upper threshold and upstream traffic Lower Threshold; Or be downlink traffic Upper threshold and downlink traffic Lower Threshold.
Wherein, up rise coefficient, up downward modulation coefficient, descending rise coefficient and descending downward modulation coefficient are set, then described upstream traffic is limited to the doorstep:
The product of the upstream rate that up rise coefficient and this travelling carriage are current with 10 again divided by 8;
Described upstream traffic Xiamen is limited to:
The product of the upstream rate that up downward modulation coefficient and this travelling carriage are current with after 10 again divided by 8;
Described downlink traffic is limited to the doorstep:
The product of the downstream rate that descending rise coefficient and this travelling carriage are current with after 10 again divided by 8;
Described downlink traffic Xiamen is limited to:
The product of the downstream rate that descending downward modulation coefficient and this travelling carriage are current with after 10 again divided by 8.
Wherein, upgrade after this link-state identification, described step C further comprises: according to this link-state identification with when last time, the chain line was determined the Link State variation, reduce the transmission rate of non-real-time service on this link, and return execution in step A;
According to this link-state identification with when last time, the chain line determined that Link State does not change, return execution in step A.
Wherein, uplink quality Upper threshold, uplink quality Lower Threshold, downlink quality Upper threshold and downlink quality Lower Threshold are set, the described links quality measurement reports that receives is the uplink quality measurement report, and then the method for described this link-state identification of renewal of step C comprises:
C11. from received measurement report, read the numerical value of signal interference ratio SIR, and judge that last time, whether link-state identification was normal, if, execution in step C12 then, otherwise, execution in step C13;
C12. whether judge SIR less than predefined uplink quality Lower Threshold, if, then this link-state identification is updated to deterioration, and finishes current more new technological process, otherwise, this link-state identification is updated to normally, and finishes current more new technological process;
C13. whether judge this SIR greater than predefined uplink quality Upper threshold, if, then this link-state identification is updated to normally, otherwise, this link-state identification is updated to deterioration;
The described links quality measurement reports that receives is the downlink quality measurement report, and then the method for described this link-state identification of renewal of step C comprises:
C21. from received measurement report, read the numerical value of block error rate BLER, and judge that last time, whether link-state identification was normal, if, execution in step C22 then, otherwise, execution in step C23;
C22. judge that whether BLER is greater than predefined downlink quality Upper threshold, if then this link-state identification is updated to deterioration, and finish current more new technological process, otherwise, this link-state identification is updated to normally, and finishes current more new technological process;
C23. whether judge this BLER less than predefined downlink quality Lower Threshold, if, then this link-state identification is updated to normal otherwise, this link-state identification is updated to deterioration.
Wherein, described definite Link State improves, determines that the method that Link State variation and definite Link State do not change is:
Judge this link-state identification with last time link-state identification whether identical, if identical, judge that then Link State does not change; If different, judge last time, whether link-state identification was respectively deterioration and normal with this link-state identification, if judge that then Link State improves; Otherwise, judge the Link State variation.
Wherein, uplink quality Upper threshold and downlink quality Lower Threshold are set, then the described method that improves the transmission rate of non-real-time service on this link that determines whether of step C is:
C41. judge according to the cell status sign whether the state of this sub-district, travelling carriage place is normal, and judge whether speed downward modulation flag bit is true, if, execution in step C42 then, otherwise, do not change the transmission rate of non-real-time service on this link, and finish current raising transmission rate flow process;
C42. calculate the SIR read and the difference between uplink quality Upper threshold or BLER and the downlink quality Lower Threshold, and calculate the rise speed of this difference correspondence, then improve the transmission rate of non-real-time service on this link according to the rise speed that calculates.
Wherein, after the non-real-time service transmission rate on this link of described raising, this method further comprises:
Speed is reduced flag bit and is set to vacation;
After the non-real-time service transmission rate on reducing this link, this method further comprises:
Speed is reduced flag bit and is set to very.
Wherein, between the transmission rate of non-real-time service on described definite Link State variation and this link of described reduction, this method further comprises:
Whether the present rate of judging non-real-time service on this link is minimum speed limit, if then return execution in step A; Otherwise, reduce the transmission rate of non-real-time service on this link.
Wherein, the measurement report type that the described judgement of steps A obtains is the cell load measurement report, then:
Renewal cell status sign, and return execution in step A.
Wherein, the cell load Upper threshold is set, then the method for the described renewal cell status sign of steps A is:
Read the current area load in the described cell load measurement report, and judge whether the current area load surpasses the cell load Upper threshold, if be congested then the cell status identification renewal; Otherwise, be normal with the cell status identification renewal.
Wherein, before steps A, this method further comprises: cell status sign is initialized as normal, with this link-state identification and last time link-state identification be initialized as normally, and speed reduced flag bit be initialized as vacation.
Use the present invention, can take into account the scheduling of multiple scheduling standard realization non-real-time service.Particularly, the present invention has following beneficial effect:
1. the present invention is under the situation that receives the measuring business volume report, when the actual required traffic carrying capacity of UE is higher than the traffic carrying capacity Upper threshold, the Link State that has only the normal and link that this UE uses of the cell status of sub-district, the current place of this UE just often, just the non-real-time service transmission rate with this UE raises, that is: in based on traffic carrying capacity, cell load and link-quality have been taken into account; And, receiving under the situation of links quality measurement reports, when the presently used Link State of UE improves, have only the cell status of sub-district, the current place of this UE normal, this link once reduced the non-real-time service transmission rate because of sole mass worsens, just improve the transmission rate of non-real-time service on this link, promptly in based on link-quality, taken into account cell load.Therefore, the present invention can seek balance between multiple scheduling standard, realizes the adjustment to the non-real-time service transmission rate.
2. in the formula of computing service amount thresholding of the present invention, comprise the current speed of UE and adjust two variablees of coefficient, and RNC can obtain the current speed of UE by simple the measurement, adjusting coefficient also can be determined according to the concrete condition of this network by the network maintenance staff, therefore, the formula of computing service amount thresholding of the present invention is comparatively simple.Simultaneously, the traffic carrying capacity thresholding that uses the current rate calculations of UE to come out meets current network condition more, has good real-time performance and accuracy.
3. after the present invention receives links quality measurement reports, improve at Link State, cell status is normal and this link once worsened when being reduced the non-real-time service transmission rate because of sole mass, again the speed with the non-real-time service on this link raises, can improve the throughput and the resource utilization of sub-district, and reduce the propagation delay time of UE.
Description of drawings
Fig. 1 is the network structure of 3G wireless communication system;
Fig. 2 is existing non-real-time service dispatching method flow chart based on cell load;
Fig. 3 is existing non-real-time service dispatching method flow chart based on traffic carrying capacity;
Fig. 4 is existing non-real-time service dispatching method flow chart based on link-quality;
Fig. 5 is the non-real-time service dispatching method flow chart in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The present invention is a kind of dispatching method of non-real-time service, its basic thought is: RNC is after receiving measurement report, judge the type of received measurement report according to measuring sign, if be the measuring business volume report, then under the paranormal situation of traffic carrying capacity, in conjunction with cell status and Link State, adjust the non-real-time service transmission rate of UE; If be links quality measurement reports, then under the situation that Link State changes,, the non-real-time service transmission rate on this link is adjusted in conjunction with adjusting situation the last time of cell status and this link.
The present invention sets in advance link-state list in RNC, preserve link No., this link link-state identification and link-state identification in this when scheduling when last scheduled in this table, and above-mentioned two link-state identifications all have normal and worsen two kinds of values.The present invention sets in advance the cell status sign in RNC, be used to show the current state of this sub-district, UE place, and the value of this cell status sign is normal or congested.In addition, the present invention also sets in advance and shows the speed downward modulation flag bit DropRate_flag that reduces non-real-time service transmission rate on this link owing to link-quality, when DropRate_flag is a true time, show that this link reduced the transmission rate of non-real-time service owing to deterioration when last scheduled; When DropRate_flag is a fictitious time, show that this link do not reduce the transmission rate of non-real-time service when last scheduled.In the present invention, link-state identification, cell status sign and DropRate_flag flag bit all belong to state parameter.
Describe as embodiment with flow process shown in Figure 5 below.
The dispatching method of non-real-time service may further comprise the steps in the present embodiment:
In this step, each state parameter carried out initialized method be: with in the link-state list last time link-state identification and this link-state identification all be made as normally; Be made as the cell status sign normal; DropRate_flag is made as vacation.
Because the sub-district was set up and finished and be in the work this moment, therefore in subsequent step,, just cell status is identified and upgrade whenever RNC receives the cell load measurement report that shows cell status.
Step 502.RNC receives and carries the measurement report of measuring sign.
In this step, RNC can receive cell load measurement report or the uplink measurement report that comes from NodeB, the upstream traffic measurement report that comes from UE or downlink quality measurement report or come from the downlink traffic measurement report of self.And, all comprise the measurement sign that shows Report Type in every kind of measurement report.
The type of the measurement report that receives is judged according to measuring sign in step 503～504., if be the cell load measurement report, then upgrade the cell status sign, and returns execution in step 502; If be the measuring business volume report, then execution in step 505; If be links quality measurement reports, then execution in step 510.
RNC is under the situation that receives the cell load measurement report herein, then read the current area load that comprises in this measurement report, and judge whether the current area load surpasses the cell load Upper threshold that sets in advance, if be congested then with the cell status identification renewal; Otherwise, be normal with the cell status identification renewal.
In order to realize that whether this step judge normally to traffic carrying capacity, present embodiment is the numerical value of computing service amount Upper threshold and traffic carrying capacity Lower Threshold in advance.
Suppose that upstream traffic is limited to TH_1 to the doorstep
Ul, downlink traffic is limited to TH_1 to the doorstep
Dl, the upstream traffic Xiamen is limited to TH_2
Ul, the downlink traffic Xiamen is limited to TH_2
DlThen:
Wherein, R
Ul, R
DlBe respectively UE current up, downstream rate; α 1
Ul, α 1
DlBe respectively up, descending rise coefficient; α 2
Ul, α 2
DlBe respectively up, descending downward modulation coefficient.For R
UlAnd R
Dl, RNC can obtain by sampled measurements; For α 1
Ul, α 1
DlAnd α 2
Ul, α 2
DlThen determine by the network operation person.Generally, α 1
UlWith α 1
DlSpan be (0,30), α 2
UlWith α 2
DlSpan be (0,1).
After having determined above-mentioned threshold value, this step judges that the method whether traffic carrying capacity exceeds normal range (NR) is: if RNC receives is the upstream traffic measurement report, judge then whether the upstream traffic that carries in this upstream traffic measurement report is in upstream traffic Upper threshold TH_1
UlWith upstream traffic Lower Threshold TH_2
UlWithin the closed interval that is constituted, if judge that then traffic carrying capacity does not exceed normal range (NR); Otherwise, judge that traffic carrying capacity exceeds normal range (NR).If what RNC received is the downlink traffic measurement report, judge then whether the downlink traffic of carrying in this downlink traffic measurement report is in downlink traffic Upper threshold TH_1
DlWith downlink traffic Lower Threshold TH_2
DlWithin the closed interval that is constituted, if judge that then traffic carrying capacity does not exceed normal range (NR); Otherwise, judge that traffic carrying capacity exceeds normal range (NR).
Step 506～507. judge whether traffic carrying capacity is lower than the traffic carrying capacity Lower Threshold, if then reduce the non-real-time service transmission rate of this UE, and return execution in step 502; Otherwise, execution in step 508.
This place judges that the method whether traffic carrying capacity is lower than the traffic carrying capacity Lower Threshold is: if RNC receives in step 502 is the upstream traffic measurement report, judge then whether the traffic carrying capacity in this measurement report is lower than the upstream traffic Lower Threshold, if, judge that then traffic carrying capacity is lower than the traffic carrying capacity Lower Threshold, otherwise, judge that traffic carrying capacity is not lower than the traffic carrying capacity Lower Threshold; If what RNC received in step 502 is the downlink traffic measurement report, judge then whether the traffic carrying capacity in this measurement report is lower than the downlink traffic Lower Threshold, if judge that then traffic carrying capacity is lower than the traffic carrying capacity Lower Threshold, otherwise, judge that traffic carrying capacity is not lower than the traffic carrying capacity Lower Threshold.
When the traffic carrying capacity in measurement report is lower than the traffic carrying capacity Lower Threshold,, reduce the shared Radio Resource of upstream or downstream non-real-time service of this UE according to traffic carrying capacity in the measuring business volume report and the difference between the traffic carrying capacity Lower Threshold.The method that reduces this UE non-real-time service transmission rate in the present embodiment is identical with the method for step 305 in the prior art, be that RNC at first determines the Radio Resource that will reduce according to the traffic carrying capacity in the measuring business volume report and the difference between the traffic carrying capacity Lower Threshold, then indicate UE under the CELL_DCH state, to reduce employed Radio Resource or from taking state exchange more than the Radio Resource to taking the resource less state.For example UE, is transformed into the CELL_PCH state again or is transformed into the URA_PCH state to the CELL_FACH state from the CELL_DCH state exchange.
Step 508～509. judge according to the cell status sign whether the state of this sub-district, UE place is normal, and judge according to this link-state identification whether the employed link of this UE is in normal condition, if all be in normal condition, then improve the non-real-time service transmission rate of this UE, and return execution in step 502; Otherwise, return execution in step 502.
RNC at first from self obtaining the cell status sign of this current sub-district of living in of UE, if the value of this cell status sign is normal, judges that then this sub-district is in normal condition herein; If the value of this cell status sign is congested, judge that then this sub-district is in abnormal condition.Be in the sub-district under the situation of normal condition, RNC obtains the presently used link No. of this UE, and is index with this link No., retrieves in the link-state list of self preserving, and finds this link-state identification of this link No. correspondence; If the value of this link-state identification that is found judges then that for normal this link is in normal condition, otherwise, judge that this link is in abnormal condition.
When this UE present located sub-district and employed link all are in just often, according to upstream or downstream traffic carrying capacity in the measuring business volume report and the difference between the upstream or downstream traffic carrying capacity Upper threshold, the transmission rate of the upstream or downstream non-real-time service by improving this UE increases Radio Resource.The method that improves this UE non-real-time service transmission rate in the present embodiment is identical with the method for step 303 in the prior art, be that RNC is at first according to traffic carrying capacity in the measuring business volume report and the definite Radio Resource that will increase of the difference between the traffic carrying capacity Upper threshold, then indicate UE under the CELL_DCH state for the user increases Radio Resource, perhaps from taking the few state exchange of Radio Resource to taking the more state of resource.For example: UE from the CELL_FACH state exchange to the CELL_DCH state.
Link-state list is upgraded according to the links quality measurement reports that receives in step 510～511., and judges according to this link-state list whether the state of this link changes, if then execution in step 512; Otherwise, return execution in step 502.
RNC will show in this measurement report that the current SIR or the BLER of the quality of link of using of this UE extracts, and read link-state identification last time from the link-state list of self preserving after receiving links quality measurement reports herein.If last time, link-state identification was normal, then judge this SIR whether less than predefined uplink quality Lower Threshold or BLER whether greater than the downlink quality Upper threshold, if then this link-state identification in the link-state list is updated to deterioration; Otherwise, this link-state identification in the link-state list is updated to normally.If last time, link-state identification was for worsening, then judge this SIR whether greater than predefined uplink quality Upper threshold or BLER whether less than the downlink quality Lower Threshold, if then this link-state identification in the link-state list is updated to normally; Otherwise, this link-state identification is updated to deterioration.
Then, RNC judges according to the link-state identification and this link-state identification last time in the link-state list whether this Link State changes.That is,, judge that then this Link State does not change if last time, link-state identification was identical with this link-state identification; Otherwise, judge that variation has taken place this Link State.
In this step, judge that the method whether Link State improves is:, judge that then this Link State improves if link-state identification last time in the link-state list is normal for deterioration, this link-state identification; Otherwise, judge this Link State variation.
Step 513～515. judge according to the cell status sign whether the state of this sub-district, UE place is normal, and judge whether the DropRate_flag flag bit is true, if, then improve the transmission rate of non-real-time service on this link, and the DropRate_flag flag bit is set to vacation, returns execution in step 502; Otherwise, return execution in step 502.
RNC at first from self obtaining the cell status sign of this current sub-district of living in of UE, if the value of this cell status sign is normal, judges that then this sub-district is in normal condition herein; If the value of this cell status sign is congested, judge that then this sub-district is in abnormal condition.Be in the sub-district under the situation of normal condition, RNC is again from self obtaining the value of DropRate_flag, and judge whether this DropRate_flag is true, if then show this link transmission rate owing to sole mass deterioration reduction non-real-time service when last scheduled; Otherwise, show that this link did not reduce the speed of non-real-time service when last scheduled.
Normal and DropRate_flag is under the genuine situation at cell status, RNC at first calculates the difference between SIR entrained in the links quality measurement reports and predefined uplink quality Upper threshold or BLER and the downlink quality Lower Threshold, and calculate the rise speed of described difference correspondence, then improve the transmission rate of non-real-time service on this link according to the rise speed that calculates.Timing on carrying out can be divided into a plurality of class with raising speed, raises a class at every turn; Also can finish the rise of non-real-time service transmission rate by once-through operation.
Because this moment, this link improved the transmission rate of non-real-time service owing to Link State improves, therefore the DropRate_flag flag bit is set to vacation.
Step 516～518. judge whether the transmission rate of non-real-time service on this link is minimum speed limit, if then return execution in step 502; Otherwise, reduce the transmission rate of non-real-time service on this link, and after DropRate_flag is set to very, return execution in step 502.
Under the situation of Link State variation, whether be minimum speed limit by the transmission rate of judging non-real-time service on this link, determine whether the transmission rate of the non-real-time service on this link exists the leeway that is lowered.If the speed of non-real-time service can also be lowered on this link, then RNC adopts the speed of the method downward modulation non-real-time service identical with step 403 in the prior art.That is: RNC at first calculates the difference between SIR entrained in the links quality measurement reports and predefined uplink quality Lower Threshold or BLER and the downlink quality Upper threshold.Descend timing, the transmission rate of the link-quality correspondence of desire adjustment can be divided into a plurality of class, reducing a class at every turn; Also can finish the downward modulation of non-real-time service transmission rate by once-through operation.
This link is owing to the oneself state variation makes the speed of non-real-time service be lowered at this moment, and then the DropRate_flag flag bit is set to very.
So far, finished the scheduling process of non-real-time service in the present embodiment.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1, a kind of non-real-time service dispatching method, it is characterized in that, setting show the cell status sign of the current load condition in sub-district, travelling carriage place, this link-state identification that shows link-quality that travelling carriage uses and last time link-state identification and show that the speed of reducing transmission rate on this link reduces flag bit, this method may further comprise the steps:
A. receive measurement report, and judge the type of this measurement report according to the measurement sign of carrying in the reception measurement report; If measuring business volume report, then execution in step B; If links quality measurement reports, then execution in step C;
B. from the measuring business volume report that receives, read the current business amount of travelling carriage, when the traffic carrying capacity of determining to read is higher than normal range (NR), according to the cell status sign of this current sub-district of living in of travelling carriage and this link-state identification of this travelling carriage, determine whether to improve the non-real-time service transmission rate of this travelling carriage, and return execution in step A;
C. according to the links quality measurement reports that receives, upgrade this link-state identification, according to this link-state identification with when last time, link-state identification determined that Link State improves, according to cell status sign and speed downward modulation flag bit, determine whether to improve the transmission rate of non-real-time service on this link, and return execution in step A.
2, the method for claim 1 is characterized in that, after reading the current business amount of this travelling carriage, described step B further comprises:
When the traffic carrying capacity of determining to read is lower than normal range (NR), reduces the non-real-time service transmission rate of this travelling carriage, and return execution in step A;
When the traffic carrying capacity of determining to read is in normal range (NR), return execution in step A.
3, method as claimed in claim 2 is characterized in that, traffic carrying capacity Upper threshold and traffic carrying capacity Lower Threshold are set, the closed interval of then described normal range (NR) for being made of traffic carrying capacity Upper threshold and traffic carrying capacity Lower Threshold.
4, method as claimed in claim 3 is characterized in that, the method that step B is described to determine whether to improve the non-real-time service transmission rate of this travelling carriage is:
Judge according to the cell status sign whether the state of this sub-district, travelling carriage place is normal, and judge according to this link-state identification whether the employed link of this travelling carriage is in normal condition, if all be in normal condition, then, improve the non-real-time service transmission rate of this travelling carriage according to traffic carrying capacity that reads and the difference between the described traffic carrying capacity Upper threshold; Otherwise, do not change the non-real-time service transmission rate of this travelling carriage.
5, method as claimed in claim 4 is characterized in that, described raising or the method that reduces the non-real-time service transmission rate of this travelling carriage are:
At first according to traffic carrying capacity that reads and the definite Radio Resource that will increase or reduce of the difference between traffic carrying capacity Upper threshold or the traffic carrying capacity Lower Threshold, the travelling carriage of RNC indication then increases or reduces Radio Resource under the cell-specific state, perhaps from taking the few or many state exchanges of Radio Resource to taking the many relatively or few relatively state of resource.
As each described method of claim 3 to 5, it is characterized in that 6, described traffic carrying capacity Upper threshold and traffic carrying capacity Xiamen are limited to upstream traffic Upper threshold and upstream traffic Lower Threshold; Or be downlink traffic Upper threshold and downlink traffic Lower Threshold.
7, method as claimed in claim 6 is characterized in that, up rise coefficient, up downward modulation coefficient, descending rise coefficient and descending downward modulation coefficient are set, and then described upstream traffic is limited to the doorstep:
The product of the upstream rate that up rise coefficient and this travelling carriage are current with 10 again divided by 8;
Described upstream traffic Xiamen is limited to:
The product of the upstream rate that up downward modulation coefficient and this travelling carriage are current with after 10 again divided by 8;
Described downlink traffic is limited to the doorstep:
The product of the downstream rate that descending rise coefficient and this travelling carriage are current with after 10 again divided by 8;
Described downlink traffic Xiamen is limited to:
The product of the downstream rate that descending downward modulation coefficient and this travelling carriage are current with after 10 again divided by 8.
8, the method for claim 1, it is characterized in that, upgrade after this link-state identification, described step C further comprises: according to this link-state identification with when last time, the chain line was determined the Link State variation, reduce the transmission rate of non-real-time service on this link, and return execution in step A;
According to this link-state identification with when last time, the chain line determined that Link State does not change, return execution in step A.
9, the method for claim 1, it is characterized in that, uplink quality Upper threshold, uplink quality Lower Threshold, downlink quality Upper threshold and downlink quality Lower Threshold are set, the described links quality measurement reports that receives is the uplink quality measurement report, and then the method for described this link-state identification of renewal of step C comprises:
C11. from received measurement report, read the numerical value of signal interference ratio SIR, and judge that last time, whether link-state identification was normal, if, execution in step C12 then, otherwise, execution in step C13;
C12. whether judge SIR less than predefined uplink quality Lower Threshold, if, then this link-state identification is updated to deterioration, and finishes current more new technological process, otherwise, this link-state identification is updated to normally, and finishes current more new technological process;
C13. whether judge this SIR greater than predefined uplink quality Upper threshold, if, then this link-state identification is updated to normally, otherwise, this link-state identification is updated to deterioration;
The described links quality measurement reports that receives is the downlink quality measurement report, and then the method for described this link-state identification of renewal of step C comprises:
C21. from received measurement report, read the numerical value of block error rate BLER, and judge that last time, whether link-state identification was normal, if, execution in step C22 then, otherwise, execution in step C23;
C22. judge that whether BLER is greater than predefined downlink quality Upper threshold, if then this link-state identification is updated to deterioration, and finish current more new technological process, otherwise, this link-state identification is updated to normally, and finishes current more new technological process;
C23. whether judge this BLER less than predefined downlink quality Lower Threshold, if, then this link-state identification is updated to normal otherwise, this link-state identification is updated to deterioration.
10, method as claimed in claim 9 is characterized in that, described definite Link State improves, determines that the method that Link State variation and definite Link State do not change is:
Judge this link-state identification with last time link-state identification whether identical, if identical, judge that then Link State does not change; If different, judge last time, whether link-state identification was respectively deterioration and normal with this link-state identification, if judge that then Link State improves; Otherwise, judge the Link State variation.
11, the method for claim 1 is characterized in that, uplink quality Upper threshold and downlink quality Lower Threshold are set, and then the described method that improves the transmission rate of non-real-time service on this link that determines whether of step C is:
C41. judge according to the cell status sign whether the state of this sub-district, travelling carriage place is normal, and judge whether speed downward modulation flag bit is true, if, execution in step C42 then, otherwise, do not change the transmission rate of non-real-time service on this link, and finish current raising transmission rate flow process;
C42. calculate the SIR read and the difference between uplink quality Upper threshold or BLER and the downlink quality Lower Threshold, and calculate the rise speed of this difference correspondence, then improve the transmission rate of non-real-time service on this link according to the rise speed that calculates.
As each described method of claim 8 to 11, it is characterized in that 12, after the non-real-time service transmission rate on this link of described raising, this method further comprises:
Speed is reduced flag bit and is set to vacation;
After the non-real-time service transmission rate on reducing this link, this method further comprises:
Speed is reduced flag bit and is set to very.
13, method as claimed in claim 8 is characterized in that, between the transmission rate of non-real-time service on described definite Link State variation and this link of described reduction, this method further comprises:
Whether the present rate of judging non-real-time service on this link is minimum speed limit, if then return execution in step A; Otherwise, reduce the transmission rate of non-real-time service on this link.
14, the method for claim 1 is characterized in that, the measurement report type that the described judgement of steps A obtains is the cell load measurement report, then:
Renewal cell status sign, and return execution in step A.
15, method as claimed in claim 14 is characterized in that, the cell load Upper threshold is set, and then the method for the described renewal cell status sign of steps A is:
Read the current area load in the described cell load measurement report, and judge whether the current area load surpasses the cell load Upper threshold, if be congested then the cell status identification renewal; Otherwise, be normal with the cell status identification renewal.
16, the method for claim 1, it is characterized in that before steps A, this method further comprises: be initialized as the cell status sign normal, with this link-state identification and last time link-state identification be initialized as normally, and speed reduced flag bit be initialized as vacation.
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| CN101207435B (en) * | 2006-12-18 | 2011-05-25 | 中兴通讯股份有限公司 | Method for modulating down special channel speed |
| CN101370274B (en) * | 2007-08-13 | 2011-08-24 | 中兴通讯股份有限公司 | Down-regulation method for special channel transmission rate |
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| CN101568156B (en) * | 2008-04-25 | 2012-06-06 | 中国移动通信集团公司 | Method and device for radio resource scheduling and base station |
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| ES2279768T3 (en) * | 1999-09-30 | 2007-09-01 | Telefonaktiebolaget Lm Ericsson (Publ) | CONTROL OF A TRANSMISSION POWER. |
| SE0101281D0 (en) * | 2001-04-06 | 2001-04-06 | Ericsson Telefon Ab L M | Method and system of link control |
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| US8504054B2 (en) * | 2002-09-10 | 2013-08-06 | Qualcomm Incorporated | System and method for multilevel scheduling |
| JP2004320240A (en) * | 2003-04-14 | 2004-11-11 | Ntt Docomo Inc | Transmission control apparatus, wireless base station, and transmission rate control method |
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| CN101568156B (en) * | 2008-04-25 | 2012-06-06 | 中国移动通信集团公司 | Method and device for radio resource scheduling and base station |
| CN101772120B (en) * | 2009-01-07 | 2012-10-31 | 鼎桥通信技术有限公司 | Switch method, system and equipment based on downlink communication quality report |
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| CN102232309A (en) * | 2010-08-20 | 2011-11-02 | 华为技术有限公司 | Method, device and system for optimizing network based on intelligent terminal |
| CN102238034A (en) * | 2011-07-07 | 2011-11-09 | 北京星网锐捷网络技术有限公司 | Method and device for maintaining link connection status and network equipment |
| CN103023795A (en) * | 2012-12-17 | 2013-04-03 | 大唐移动通信设备有限公司 | Method and system for controlling packet switching rate based on cell condition |
| CN103023795B (en) * | 2012-12-17 | 2015-09-23 | 大唐移动通信设备有限公司 | A kind of method and system based on cell condition control packet exchange rate |
| CN107306440A (en) * | 2016-04-20 | 2017-10-31 | 中兴通讯股份有限公司 | A kind of internet of things data transmission method and internet-of-things terminal |
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| CN108900363A (en) * | 2018-08-15 | 2018-11-27 | 广州易行信息技术有限公司 | Adjust the method, apparatus and system of local area network working condition |
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