CN101521916A - Method for dynamically downward regulating the wireless access rate of packet services - Google Patents
Method for dynamically downward regulating the wireless access rate of packet services Download PDFInfo
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Abstract
The invention discloses a method for dynamically downward regulating the wireless access rate of packet services. The method includes the following steps of according to a transport format set (TFS) corresponding to the current rate, calculating the current downward-regulation threshold; sending a measurement control message from a network side to a user side or from a network side to a network side; when traffic volume is lower than the current downward-regulation threshold, sending a traffic volume measurement report carrying the newest report volume from the user side to the network side or from the network side to the network side, and then selecting a target rate according to the newest report volume; when the target rate is not equal to the current rate, regulating the target rate to the current rate and re-configurating the TFS of the service according to the target rate; and subsequently, repeating the steps by taking the target rate as the current rate until wireless link is released or the control state transition of wireless resource happens. By the use of the method, the requirement for rapidly tracking the actual traffic of user packet services can be satisfied and a moderate transmission rate is selected, thus improving the utilization rate of wireless resource.
Description
Technical field
The present invention relates to the adjustment technology of wireless access rate, refer in particular to the dynamic method of adjusting of wireless access rate of Packet Service downwards.
Background technology
Development along with the 3G (Third Generation) Moblie technology, for customer mobile terminal provides high-quality data transmission service, as data packet services such as Internet access service, web page browsing, Email, text transfer protocol (FTP) downloads, become the active demand of operator.The transmission feature of data packet services maximum is sudden big with the rate dynamic excursion.For data packet services,, and can cause the waste of channel width resource seldom the time in data volume if, when data burst, may not satisfy the quick transmission requirements of data for it distributes fixing channel width resource.In order to improve the wireless signal-path band width efficiency of resource, the channel width resource that communication system should be able to be distributed according to the traffic needs dynamic-configuration of data packet services, promptly when the needs data quantity transmitted is big, distribute bigger channel width resource, to guarantee user's business demand; In data volume hour, then reconfigure less channel width resource, use to other users unnecessary channel width resource allocation.
In 3-G (Generation Three mobile communication system), the dynamic channel configuration realizes by measuring business volume, during data communication, this professional traffic carrying capacity is carried out continuous measurement, the related parameter of measuring that has is that upper-layer protocol by network side disposes, and the relevant parameter of measurement comprises measuring object, measuring amount, report amount, triggers thresholding, reports lag time, reports the shielding time etc.Wherein, the concrete object of measuring object for measuring, for example certain bar transmission channel; Measuring amount and report amount are the statistic that reports in measurement and the measurement report, for example mean value and the variance of the instantaneous value of buffering area occupation quantity, certain hour section; Triggering thresholding is the thresholding that incident or measurement report trigger; For measuring business volume, trigger thresholding and comprise rise thresholding and downward modulation thresholding; Reporting lag time is the time that measuring amount surpass to trigger thresholding continuously before measurement report reported, if measuring amount does not surpass continuously and triggers thresholding during this period of time, and reporting measurement reports not then, otherwise reporting measurement reports; Report the shielding time to be meant and to forbid in this time, reporting again a same event measurement report after an affair reports.Behind the system start-up measuring business volume, if the traffic carrying capacity that measures meets or exceeds the rise thresholding of setting, then send the measurement report that traffic carrying capacity increases to high-rise module, high level is initiated channel according to measurement report and is reshuffled, and increases channel width; If the traffic carrying capacity that measures is lower than the downward modulation thresholding of setting, then send the measurement report that traffic carrying capacity reduces to high-rise module, the high-rise channel of initiating is reshuffled, and reduces channel width.
Fig. 1 has provided traffic carrying capacity downward modulation reported event and has triggered the schematic diagram that measuring business volume is reported, traffic carrying capacity among Fig. 1 can be a data volume waiting for transmission in the buffering area, triggering thresholding is provided by measuring control by high level, among Fig. 1, when the traffic carrying capacity that measures is lower than the downward modulation thresholding, just trigger a measuring business volume report that is lower than the downward modulation thresholding, can provide the data volume of this business corresponding buffer region that measures in the report, perhaps also comprise average, the variance of data.
In practical communication system, for non real-time data packet services, wireless access system is 16kbps usually with a smaller initial rate access service such as initial access rate.In the process of data packet services communication, again according to the measuring business volume of business, the air interface rate that raises or reduce current business with certain rule is to regulate the channel width resource.The method of air interface rate about the downward modulation current business mainly contains the single step decreasing method at present.The single step adjustment is meant that the transmission rate configured in advance with air interface becomes some grades, when measuring business volume reports requirement to reduce channel width, then reduces speed step by step by the good speed grade of configured in advance.The characteristics of this method are that downward modulation speed is too slow, often lag behind professional actual conditions, cause the Radio Resource of system's preciousness not discharged timely, have the possibility of waste of radio resources.
In the narration afterwards, the convenience in order to illustrate abbreviates air interface rate as speed, abbreviates 3-G (Generation Three mobile communication system) as system.
Summary of the invention
In view of this, main purpose of the present invention is to provide the dynamic method of adjusting of wireless access rate of Packet Service downwards, utilizes this method, can follow the tracks of the demand of the actual volume of user grouping business apace, select suitable transmission rate, thereby improve utilization ratio of wireless resources.
For achieving the above object, technical scheme of the present invention is achieved in that
The method that wireless access rate is dynamically adjusted downwards in the Packet Service, this method may further comprise the steps:
A, according to the pairing transmission format set TFS of present rate, calculate current downward modulation thresholding;
B, according to the measurement control messages received, when traffic carrying capacity is lower than current downward modulation thresholding, send the measuring business volume report of carrying up-to-date report amount;
C, according to up-to-date report amount select target speed;
D, after definite targeted rate and present rate are unequal, targeted rate is adjusted into up-to-date present rate, and reshuffles the TFS of this Packet Service according to this targeted rate.
Further, before the steps A, this method further comprises: the lag time TimeTriggerB of configuration service amount downward modulation reported event, shielding time PendingTimeB, and configurable speed set in background data base.
Further, before the steps A, in background data base TimeTriggerB, the PendingTimeB of configuration service amount downward modulation reported event, and the set of configurable speed after, this method further comprises: judge that whether present rate is the minimum-rate in the configurable speed set, if then present rate is carried out raising speed and handles; Otherwise do not carry out any operation.
Preferably, the computational methods of the thresholding of downward modulation described in the steps A are: the maximum transmitted piece number TBNumm of the next stage speed of present rate in the configurable speed set be multiply by transmission block size TBSize in the configurable speed set.
Preferably, have the measurement Control Parameter in the described measurement control messages, described measurement Control Parameter comprises: measurement type, measuring object, measuring amount, report amount, measurement report criterion, current downward modulation thresholding, TimeTriggerB, PendingTimeB.
Further, described measurement control messages is surveyed to the user by network side, or network direction-finding network side sends.
Further, the report of described measuring business volume, or is sent to network side by network side to network side by user side.
Preferably, the time period internal buffer occupancy of described up-to-date report amount instantaneous value that is buffer occupancy or system configuration mean value.
Preferably, described step C is:
C1, judge that whether up-to-date report amount is zero, if zero, TBNum then got
NewBe 1, then with TBNum
NewMultiply by TBSize, obtain up-to-date transformat TF
NewIf non-vanishing, then the ratio of up-to-date report amount and TBSize rounded up and obtain TBNum
New, then with TBNum
NewMultiply by TBSize, obtain TF
New
C2, in the maximum TF of all configurable speed TFS, find out and above-mentioned TF
NewImmediate TF, so select and this TF rate corresponding as targeted rate.
Further, after the step D, this method further comprises: be present rate with the targeted rate, repeated execution of steps A to D discharges or takes place radio resource control RRC state transition up to Radio Link.
The method that the wireless access rate of Packet Service of the present invention is dynamically adjusted downwards, when present rate that keeps the Packet Service of connection status in the system is non-minimum-rate in the configurable speed set, calculate the pairing downward modulation thresholding of this speed according to the pairing transmission format set of this speed (TFS), when traffic carrying capacity surpasses the downward modulation thresholding, then start the measuring business volume report, and select suitable speed as targeted rate according to up-to-date report amount entrained in the measuring business volume report, under targeted rate and the unequal situation of present rate, targeted rate is adjusted into current up-to-date speed, and reshuffles the TFS of this Packet Service according to this targeted rate; According to up-to-date present rate, repeat the step of calculating downward modulation thresholding, the report of startup measuring business volume, select target speed, adjusting speed, reprovision TFS then, discharge or take place Radio Resource control (RRC) state transition up to Radio Link.This shows, this method is dynamically calculated the downward modulation thresholding, and carry out the speed adjustment as required according to up-to-date report amount, can follow the tracks of the demand of the actual volume of user grouping business apace, select suitable transmission rate, the too slow shortcoming of speed downward modulation when having avoided single step to adjust step by step simultaneously, thus utilization ratio of wireless resources improved.
Description of drawings
Fig. 1 triggers the schematic diagram of measuring business volume report for traffic carrying capacity downward modulation reported event;
The method flow schematic diagram that Fig. 2 dynamically adjusts downwards for the wireless access rate of Packet Service of the present invention;
Fig. 3 is the method flow schematic diagram of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described in further detail:
The method that the wireless access rate of Packet Service of the present invention is dynamically adjusted downwards may further comprise the steps as shown in Figure 2:
Wherein, each TFS is TFS={TF in the configurable speed set
1, TF
2..., TF
n, wherein, TF
nTransformat (TF) for transmission block size sum maximum in the set.Each transformat TF in the set
i=TBNum
i* TBSize.Wherein TBNum is the transmission block number, and TBSize is the transmission block size, and in each transmission intercal (TTI), system picks out the transformat of a TF as current TTI from TFS.
User's a packet traffic requests is received by step 202, system, and system is initial access rate of this Packet Service configuration;
This initial access rate is generally got smaller value, prevents waste of radio resources, and the size of occurrence is determined and configuration as the case may be by network side, belongs to prior art, does not repeat them here.
Here, why in steps 204, be because if present rate is a minimum speed in the configurable speed set, can't carry out the speed downward modulation, has only system because after customer service need be adjusted into present rate non-minimum-rate in the set of configurable speed, just can reduce.
Wherein, the computing formula of current downward modulation thresholding B is as follows, TBNum in the formula
mIt is the maximum transmitted piece number of configurable next stage speed in the system.
B＝TBNum
m×TBSize (1)
The measuring business volume of the up-downgoing transmission channel of step 206, this Packet Service of system start-up promptly during up channel, is sent to user side by network side and to have the measurement control messages of measuring Control Parameter; During down channel, have the measurement control messages of measuring Control Parameter to the network side transmission by network side;
Here, measure Control Parameter and comprise: measurement type, measuring object, measuring amount, report amount, measurement report criterion, current downward modulation thresholding B, TimeTriggerB, PendingTimeB, and wherein, the measurement type is a measuring business volume; Measuring amount and report amount are the mean value of the time period internal buffer occupancy of the instantaneous value of buffer occupancy or system configuration, and this time period, promptly network side was configured by the transmit leg of measuring control messages in the system; It is that Event triggered reports that measurement reports criterion; The downward modulation thresholding B of reporting events calculates in step 205; TimeTriggerB and PendingTimeB are configured in step 201.
In step 207, the measuring business volume implementation, when traffic carrying capacity satisfies the reporting events condition, when promptly traffic carrying capacity is lower than current downward modulation thresholding B, start the measuring business volume report, when being up channel, send the measuring business volume report of carrying up-to-date report amount to network side by user side; During down channel, send the measuring business volume report of carrying up-to-date report amount to network side by network side;
During Packet Service keeps, be during Packet Service keeps connecting, the recipient of service volume measurement and control message, be that user side or network side are carried out measuring business volume by measuring Control Parameter, when traffic carrying capacity satisfies the reporting events condition, is traffic carrying capacity when being lower than current downward modulation thresholding B, start the measuring business volume report.Up-to-date report amount is carried in the measuring business volume report.For example, up-to-date report amount is R.
After the measuring business volume report is received by step 208, system, according to TF
New=TBNum
New* TBSize and formula (2) calculate the new transformat TF corresponding with up-to-date report amount
New
Wherein, TBNum
NewComputing formula as follows, in the formula
Be the symbol that rounds up.
Here, if having a plurality of and TF rate corresponding that found out, then select one as targeted rate according to maximum or minimum principle.Maximum principle is to select of speed maximum from these speed, when adopting conservative strategy, can use maximum principle; Minimum principle is to select of speed minimum from these speed, when taking radical prescription, uses minimum principle.
Here, specifically adjust speed and reprovision TFS is the content of prior art, do not repeat them here.
System is based on adjusted new speed then, and repeated execution of steps 203 discharges or take place RRC state transition to step 211 until Radio Link.
The method flow of one embodiment of the invention mainly may further comprise the steps as shown in Figure 3:
Step 301, system are in TimeTriggerB, the PendingTimeB of background data base configuration service amount downward modulation reported event, the set of configurable speed;
Wherein, TimeTriggerB=25 * TTI, PendingTimeB=50 * TTI, configurable speed is gathered as shown in Table 1:
| Speed (kbps) | TFS |
| 16 | {0，1}×336 |
| 32 | {0，1，2}×336 |
| 64 | {0，1，2，3，4}×336 |
| 128 | {0，1，2，3，4，8}×336 |
| 256 | {0，1，2，4，8，12，16}×336 |
Table one
A new packet traffic requests is received by step 302, system, and system is initial access rate 16kbps of this Packet Service configuration;
Step 303, system judge that speed 16kbps speed is minimum speed in the configurable speed set;
Step 304, system are because user's business demand is adjusted into non-minimum-rate 64kbps in the configurable speed set with present rate, and execution in step 205 then;
Step 305, system be according to the TFS of present rate 64kbps correspondence, and by formula (1) to calculate current downward modulation thresholding B be 672bit;
If present rate is 64kbps, the following stage speed of present rate 64kbps is 32kbps, and then the B thresholding is 2 * 336=672bit.
The measuring business volume of the up-downgoing transmission channel of step 306, this Packet Service of system start-up promptly during up channel, is sent to user side by network side and to have the measurement control messages of measuring Control Parameter; During down channel, have the measurement control messages of measuring Control Parameter to the network side transmission by network side;
Here, measuring type is measuring business volume; Because this reports is to report for the first time, so measuring amount and report amount are the mean value of the time period internal buffer occupancy of the instantaneous value of buffer occupancy or system configuration herein; It is that Event triggered reports that measurement reports criterion; The thresholding B of incident downward modulation calculates in step 305; TimeTriggerB and PendingTimeB are configured in step 301.
In step 307, the measuring business volume implementation, when traffic carrying capacity satisfies the reporting events condition, when promptly traffic carrying capacity is lower than current downward modulation thresholding B, start the measuring business volume report, when being up channel, send the measuring business volume report of carrying up-to-date report amount to network side by user side; During down channel, send the measuring business volume report of carrying up-to-date report amount to network side by network side;
During Packet Service keeps, during promptly Packet Service keeps connecting, the recipient of service volume measurement and control message, promptly user side or network side are carried out measuring business volume by measuring Control Parameter, when traffic carrying capacity is lower than downward modulation thresholding B, start the measuring business volume report.Up-to-date report amount is carried in the measuring business volume report.For example, up-to-date report amount is R=600bit, and the report amount of measuring in the Control Parameter in this report amount and the step 306 is identical.
After the measuring business volume report is received by step 308, system, according to TF
New=TBNum
New* TBSize and formula (2) calculate the transformat TF that makes new advances
New
Here, R=600bit〉0, so,
So, TF
New=2 * 336.
Step 309, system find out and TF in the maximum TF of all configurable speed TFS
NewImmediate TF and then selection and this TF rate corresponding are as targeted rate;
Because the TF that step 308 calculates
New=2 * 336, in the configuration of table one, just select 32kbps as targeted rate.
Step 310, the judgement targeted rate 32kbps of system and present rate 64kbps are unequal, then reshuffle this professional TFS according to targeted rate 32kbps;
System is based on 32kbps then, and repeated execution of steps 303 discharges or take place RRC state transition to step 310 up to Radio Link.
This shows, the method that wireless access rate is dynamically reduced in the Packet Service of the present invention, dynamically calculate the downward modulation thresholding, and adjust speed as required according to up-to-date report amount, so the demand that can follow the tracks of the actual volume of user grouping business apace, select suitable transmission rate, the too slow shortcoming of speed downward modulation when having avoided single step to adjust step by step, the utilance of raising system wireless resource.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1, the method that wireless access rate is dynamically adjusted downwards in the Packet Service is characterized in that this method may further comprise the steps:
A, according to the pairing transmission format set TFS of present rate, calculate current downward modulation thresholding;
B, according to the measurement control messages received, when traffic carrying capacity is lower than current downward modulation thresholding, send the measuring business volume report of carrying up-to-date report amount;
C, according to up-to-date report amount select target speed;
D, after definite targeted rate and present rate are unequal, targeted rate is adjusted into up-to-date present rate, and reshuffles the TFS of this Packet Service according to this targeted rate.
2, method according to claim 1, it is characterized in that, before the steps A, this method further comprises: the lag time TimeTriggerB of configuration service amount downward modulation reported event, shielding time PendingTimeB, and configurable speed set in background data base.
3, method according to claim 2, it is characterized in that, before the steps A, in background data base TimeTriggerB, the PendingTimeB of configuration service amount downward modulation reported event, and the set of configurable speed after, this method further comprises: judge that whether present rate is the minimum-rate in the configurable speed set, if then present rate is carried out raising speed and handles; Otherwise do not carry out any operation.
4, method according to claim 3 is characterized in that, the computational methods of the thresholding of downward modulation described in the steps A are: with the maximum transmitted piece number TBNum of the next stage speed of present rate in the configurable speed set
mMultiply by transmission block size TBSize in the configurable speed set.
5, method according to claim 4, it is characterized in that, have the measurement Control Parameter in the described measurement control messages, described measurement Control Parameter comprises: measurement type, measuring object, measuring amount, report amount, measurement report criterion, current downward modulation thresholding, TimeTriggerB, PendingTimeB.
6, method according to claim 5 is characterized in that, described measurement control messages is surveyed to the user by network side, or network direction-finding network side sends.
7, method according to claim 6 is characterized in that, the report of described measuring business volume, or is sent to network side by network side to network side by user side.
8, method according to claim 1 is characterized in that, the instantaneous value that described up-to-date report amount is a buffer occupancy or the time period internal buffer occupancy of system configuration mean value.
9, method according to claim 7 is characterized in that, described step C is:
C1, judge that whether up-to-date report amount is zero, if zero, TBNum then got
NewBe 1, then with TBNum
NewMultiply by TBSize, obtain up-to-date transformat TF
NewIf non-vanishing, then the ratio of up-to-date report amount and TBSize rounded up and obtain TBNum
New, then with TBNum
NewMultiply by TBSize, obtain TF
New
C2, in the maximum TF of all configurable speed TFS, find out and above-mentioned TF
NewImmediate TF, so select and this TF rate corresponding as targeted rate.
10, according to each described method in the claim 1 to 9, it is characterized in that after the step D, this method further comprises: be present rate with the targeted rate, repeated execution of steps A to D discharges or takes place radio resource control RRC state transition up to Radio Link.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102104897A (en) * | 2009-12-17 | 2011-06-22 | 大唐移动通信设备有限公司 | Method and equipment for prohibiting measurement report |
| CN102215605A (en) * | 2011-05-27 | 2011-10-12 | 上海华为技术有限公司 | Interface rate adjusting method and device and base station |
| WO2012155423A1 (en) * | 2011-07-18 | 2012-11-22 | 中兴通讯股份有限公司 | Method and terminal for scheduling wireless link in packet domain network |
| CN103906144A (en) * | 2012-12-26 | 2014-07-02 | 中国移动通信集团上海有限公司 | Method and device for adjusting data service rate of mobile terminal |
| WO2015143606A1 (en) * | 2014-03-24 | 2015-10-01 | 华为技术有限公司 | Radio access network device, user equipment and buffer status reporting method |
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| US6882857B2 (en) * | 2002-11-26 | 2005-04-19 | Qualcomm, Incorporated | Method and apparatus for efficient processing of data for transmission in a communication system |
| CN1275400C (en) * | 2002-12-31 | 2006-09-13 | 中兴通讯股份有限公司 | Velocity regulating method of speech sound self adaptive multivelocity |
| KR100918743B1 (en) * | 2006-01-18 | 2009-09-24 | 삼성전자주식회사 | Method and apparatus for selection transport format combination in wireless communications system |
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2008
- 2008-02-28 CN CN2008100065161A patent/CN101521916B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102104897A (en) * | 2009-12-17 | 2011-06-22 | 大唐移动通信设备有限公司 | Method and equipment for prohibiting measurement report |
| CN102104897B (en) * | 2009-12-17 | 2014-04-09 | 电信科学技术研究院 | Method and equipment for prohibiting measurement report |
| CN102215605A (en) * | 2011-05-27 | 2011-10-12 | 上海华为技术有限公司 | Interface rate adjusting method and device and base station |
| WO2012155423A1 (en) * | 2011-07-18 | 2012-11-22 | 中兴通讯股份有限公司 | Method and terminal for scheduling wireless link in packet domain network |
| CN103906144A (en) * | 2012-12-26 | 2014-07-02 | 中国移动通信集团上海有限公司 | Method and device for adjusting data service rate of mobile terminal |
| CN103906144B (en) * | 2012-12-26 | 2017-11-21 | 中国移动通信集团上海有限公司 | A kind of method and device for the data service rate for adjusting mobile terminal |
| WO2015143606A1 (en) * | 2014-03-24 | 2015-10-01 | 华为技术有限公司 | Radio access network device, user equipment and buffer status reporting method |
| CN105122872A (en) * | 2014-03-24 | 2015-12-02 | 华为技术有限公司 | Radio access network device, user equipment and buffer status reporting method |
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