CN1286283C - Congestion control and recovery processing method in mobile communication system - Google Patents

Congestion control and recovery processing method in mobile communication system Download PDF

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Publication number
CN1286283C
CN1286283C CN 03136667 CN03136667A CN1286283C CN 1286283 C CN1286283 C CN 1286283C CN 03136667 CN03136667 CN 03136667 CN 03136667 A CN03136667 A CN 03136667A CN 1286283 C CN1286283 C CN 1286283C
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congested
time slot
uplink
recovery
congestion
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CN1549469A (en
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王安义
周德锁
肖登坤
赵瑾波
杨华
郭俊利
毕海
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Abstract

The present invention relates to a processing method for congestion control and restoration in mobile communication systems. Congestion and congestion restoration are reasonably effectively controlled and processed by understanding the situations of loads and congestion of the wireless resource, so that the system gets back to the stable normal-load state in a seamless mode as soon as possible so as to enhances utilization rate of the wireless resource. The present invention comprises: A. the loads of all time slots of an uplink and a downlink of a determined cell is detected on the basis of the loads of the time slots, and whether the corresponding time slots are congested is judged according to the detecting result of the loads of all the time slots; B. the congestion grade of the cell is determined according to the number of the time slots which has the congestion in the uplink and the downlink of the cell, and the corresponding congestion is processed according to the congestion grade of the cell; C. whether the congestion time slots which are processed in the step B satisfy the congestion restoration conditions is detected; D. the congestion restoration grade of the cell is determined according to the number of the time slots which satisfy the congestion restoration conditions, and the congestion is restored according to the congestion restoration grade of the cell.

Description

The processing method of congested control and recovery in the mobile communication system
Technical field
The present invention relates to a kind of mobile communication technology, relate to a kind of congested control and restoration methods in the mobile communication system or rather, load and congestion condition by real-time monitoring system, determine congestion level and congested restoration grade, congested appropriately reasonably to handle, make system can continue to keep normal load condition.Method of the present invention is applicable to time division duplex (TDD) mobile communication system.
Background technology
In mobile communications network, the load and the congestion condition of detection in time, understanding Radio Resource rationally, are effectively loaded and congested control and congested recovery processing method so that adopt, and are the important means that improves wireless resource utility efficiency, optimizes network quality.
In existing load, jamming control method, be the unit calculating of loading usually with the sub-district, it is congested to judge according to load result of calculation whether the sub-district takes place then, and then whether decision carry out congested recovery and handle, promptly to liking the sub-district.Calculating to cell load is carried out respectively by uplink downlink.
Congested control flow can be sketched and be: at first according to the load of measurement parameter (the downlink gross power of base station, uplink interference situation etc.) calculation plot; Cell load result of calculation and the threshold value of being scheduled to are compared; If the result greater than threshold value, then sends congested indication, trigger congested treatment mechanism and carry out congested processing; If the result less than threshold value, then returns idle condition, wait pending load next time to calculate and judgement.Owing to can not in time find the small area jam situation, and have only when whole sub-district all enters congestion condition and just deal with, make that the amplitude of congested control is too big.This congested control and processing method cause the error rate to rise easily because of cell capacity is saturated fast, and retransmission data increases and cutting off rate is increased sharply, and its result makes system enter labile state.
Summary of the invention
The objective of the invention is to design the processing method of congested control and recovery in a kind of mobile communication system, can understand the load and the congestion condition of Radio Resource in real time, control congested rationally, effectively and handle congested recovery.
The technical scheme that realizes the object of the invention is such: the processing method of congested control and recovery in a kind of mobile communication system is characterized in that comprising:
A. detect the load of definite each time slot of cell uplink and each time slot of down link, and judge according to the testing result of each time-slot load whether each corresponding time slot is congested;
B. determine that according to being somebody's turn to do sub-district uplink and downlink link have congested number of time slots to determine the small area jam grade, and select to trigger dynamic channel allocation module, adaptive multi-rate control module, packet scheduling module, cell selecting module, admit control module, handover module to carry out congested processing according to the small area jam grade;
Whether the congested time slot that C. detects after step B handles satisfies congested recovery condition;
D. according to the number of time slots that satisfies congested recovery condition, determine the small area jam restoration grade, and select to trigger dynamic channel allocation module, adaptive multi-rate control module, packet scheduling module, cell selecting module, admit control module, handover module to carry out congested recovery processing according to the small area jam restoration grade.
Method of the present invention, be mainly used in load condition, the congestion condition of each time slot in the real-time monitoring sub-district, and determine congested or congested restoration grade according to different situations, so that after appearance is congested, take the appropriate reasonably congested scheme that deals with, handle operation with recovering accordingly when the congested recovery, make system continue to keep normal load condition.
When the present invention loads at calculation plot, be that unit carries out with the time slot, and calculate the average load factor of each time slot in certain " slip " time window, result of calculation has embodied statistical average;
The present invention in the congestion detection process, detection to as if the time slot of sub-district, and distinguish the uplink and downlink link, carry out congestion detection respectively, and that the load condition of all time slots is judged comprehensively in the comprehensive sub-district, whether detected cells takes place is congested;
Different congestion level is distinguished according to the congestion detection result by system, and the number of time slots that is in congestion state according to uplink and downlink link in the same sub-district is determined the congestion level of sub-district, as I level (accurate congested) and II level (congested).
The present invention is when congested processing, take different congested processing policies at different congestion level, as under the state of congestion level I, concrete treatment measures have triggering DCA, and (dynamic channel allocation: dynamic channel allocation) module is adjusted to other time slots with the certain user and/or triggers AMRC that (adaptivemulti-rate control: adaptive multi-rate control) module reduces the voice service message transmission rate and/or triggers PS (packet schedule: module compressed packet user's data transmission rate etc. packet scheduling), by the congested user of time slot is handled, to reduce the load of this time slot; As under the state of congestion level II, concrete treatment measures have triggering cell to select module and/or trigger the admittance control module and/or trigger handover module, thereby forbid new user or switch the user inserting this sub-district, simultaneously can adopt the concrete treatment measures of being taked under the congestion level I state, to reduce the load of congested time slot.
When the present invention detected in congested recovery, still being unit with the time slot detected the congestion state of each time slot of uplink and downlink link, and the load condition of all time slots judges whether detected cells satisfies congested returning to form in the comprehensive then sub-district.
When the present invention handles in congested recovery, the strategy that congested recovery is handled is to take different congested recovery processing policies according to the grade of the congested recovery of time slot, determine congested restoration grade according to the congested recovery number of the different time slot of uplink downlink, as congested restoration grade I level and II level; Under the state of congested restoration grade I, when congested recovery is handled, the user who carried out congested processing is recovered, concrete measure has: trigger the cancellation of DCA module the certain user is adjusted to other time slot; Perhaps trigger AMRC module recovery voice service message transmission rate; Perhaps trigger the message transmission rate of PS module recovery grouping user etc.Under the state of congested restoration grade II, can triggering cell select module; Triggering is admitted control module and is triggered handover module, thereby releasing recovers the user who carried out congested processing when congested recovery is handled simultaneously to the restriction that new user or switching user insert this sub-district.
Compare with the recovery processing method with the congested control of traditional load, congestion processing method of the present invention has following advantage:
Because in the TDD mobile communication system, the load of each sub-district can decide by the load of each time slot, thereby timeslot-based load testing method meets the characteristics of TDD system especially;
By introducing congestion level and congested restoration grade, can improve wireless resource utility efficiency guaranteeing the normal while of system loading.
Description of drawings
Fig. 1 is that the present invention is unit calculated load situation flow chart with the time slot;
Fig. 2 is the flow chart of detected uplink congestion situation of the present invention;
Fig. 3 is the flow chart that the present invention detects the down link congestion condition;
Fig. 4 is the flow chart that the present invention carries out congested processing;
Fig. 5 is that the present invention carries out the flow chart that congested recovery is handled;
Fig. 6 is total process chart that the present invention of complex chart 1 to Fig. 5 carries out congested control and congested recovery.
Embodiment
The processing method of congested control of load of the present invention and recovery is undertaken by the classification situation, comprises the technology contents of five parts: load calculates (Fig. 1), congestion detection (Fig. 2, Fig. 3), congested processing (Fig. 4), congested recovery detects and (Fig. 5) handled in congested recovery.Below respectively in conjunction with the accompanying drawings.
Referring to Fig. 1, load is calculated as congestion detection provides basic foundation.Calculated load of the present invention is respectively that unit carries out with the time slot to uplink downlink, calculates the load condition of each time slot.
In the load calculation process:
Step 101, system periodically receives measurement data by base station report according to certain time interval, as the downlink gross power of base station, uplink interference situation etc.;
Step 102, at first differentiate the current sub-district that will calculate according to measurement data, just in M sub-district, reception be the measurement data of which sub-district, such as hypothesis is the measurement data of i sub-district in M the sub-district, below all describes at this i sub-district;
Step 103, what judgement will be calculated at present then is the uplink load or the downstream link overhead of this i sub-district, if the instantaneous load that calculates certain time slot of up link (representing with j) is then carried out to 106 by step 104, if the instantaneous load that calculates certain time slot of down link (representing with h) is then carried out (uplink and downlink link instantaneous load computational methods differences by step 107 to 109, its computational methods all adopt mature technology, do not belong to content of the present invention);
Step 104 is calculated the i sub-district in fixed length is " slip " time window of N, the average load factor L of each time slot of up link to 106 IjIts process comprises: discern certain j time slot earlier, calculate instantaneous load (or claiming time-slot load) l of i cell uplink j time slot IjIn " slip " time window of fixed length N, every regular hour t, (being sliding step) calculates an average load factor L Ij, promptly N result of calculation is averaged, just can obtain the average load factor L of this time slot j in the time window Ij, L ij = 1 N Σ k = 1 N l ij , k (wherein N is that sliding window is long, sliding window length be should be average number of times, k is the some intermediate variables in calculating for N time, k=1 ... N).The span of j is by the number of time slots decision of up link.
Step 107 is calculated the i sub-district in fixed length is " slip " time window of N, the average load factor L of each time slot of down link to 109 IhIts process comprises: discern certain h time slot earlier, calculate instantaneous load (or claiming time-slot load) l of i cellular downlink h time slot IhIn " slip " time window of fixed length N, calculate once every regular hour ts (being sliding step), calculate N time altogether, then this N time result of calculation is averaged, just can obtain the average load factor L of this time slot h in the time window Ih, L ih = 1 N Σ k = 1 N l ih , k (wherein N is that sliding window is long, and k is N the some intermediate variable in the calculating, k=1 ... N).The span of h is by the number of time slots decision of down link.
The number of uplink and downlink chain time gap may be identical or inequality, the time slot calculating number that is the uplink and downlink link may be identical or inequality, is total to J time slot as up link, and down link is H time slot altogether, J and H can equate also can be unequal, viewing system situation and deciding.If tdd mode is a non-symmetrical service, the number of its uplink downlink time slot is just inequality, and it is inequality that promptly the time slot of uplink downlink calculates number.And if the TD-SCDMA pattern is a symmetrical service, the number of its uplink downlink time slot is just identical, and promptly the time slot of uplink downlink calculating number is identical.
The present invention is also undertaken by time slot congestion detection, the congestion state of each time slot is detected respectively, and also separately carry out by up link and down link for the congestion detection of time slot.During detection, investigate in the time window at one with predetermined threshold value according to each time-slot load result of calculation of uplink and downlink link respectively and compare, thereby judge the number that each time slot is whether congested and judge congested time slot.When detecting time slot when congested, be that congested grade takes different strategies to go to handle according to the congested number of time slot, detect promptly that time slot is congested, two time slots are congested, adopt processing method inequality when three time slots are congested etc. respectively.
For the congestion detection of sub-district, it is congested the load condition of all time slots in the comprehensive sub-district to judge whether detected cells takes place, and has only when all or most of uplink time slot all to occur judging that just the up link appearance of full sub-district is congested when congested.Equally, all occur judging that just the down link of full sub-district occurs congested when congested when all or most of downlink time slots.Its flow process is respectively as Fig. 2, shown in Figure 3.
Referring to Fig. 2, the congestion detection of each time slot of up link.By detection (finishing) that each time slot of certain cell uplink is loaded respectively, according to the average load factor result of calculation of each time slot each time slot is carried out whether congested judgement again by implementation step shown in Figure 1.
Step 201, each time slot average load factor L of cell uplink that input is calculated by process shown in Figure 1 Ij
Step 202 is with above-mentioned each time slot average load factor result of calculation L IjCompare with predetermined uplink load factor threshold value (being the congestion threshold value of up link), judge L Ij〉=uplink load factor threshold value is promptly carried out each time slot and whether is had congested judgement;
Step 205, if the average load factor of a certain time slot less than predetermined uplink load factor threshold value, it is congested to judge that then this time slot does not occur, and returns idle condition, waits for the load measurement information that receives following one-period;
Step 203, congested if the average load factor of some or several time slots, judges promptly that this one or several time slot occurs more than or equal to predetermined uplink load factor threshold value, add up congested number of time slots again and determine congestion level;
Step 204 triggers different congested processing schemes according to different congestion level, such as: dynamic channel adjustment (DCA), switching controls (HC), packet scheduling (PS) etc.
Referring to Fig. 3, the congestion detection of each time slot of down link.By detection that each time slot of down link is loaded respectively, according to the average load factor result of calculation of each time slot each time slot is carried out whether congested judgement again.
Step 301, each time slot average load factor L of cellular downlink that input is calculated by process shown in Figure 1 Ih
Step 302 is with above-mentioned each time slot average load factor result of calculation L IhCompare with predetermined downstream link overhead factor threshold value (being down link congestion threshold value), judge L Ih〉=downstream link overhead factor threshold value is promptly carried out each time slot of down link and whether is had congested judgement;
Step 303, if the average load factor of a certain time slot less than predetermined downstream link overhead factor threshold value, it is congested to judge that then this time slot does not occur, and returns idle condition, waits for the load measurement information that receives following one-period;
Step 304 is if the average load factor of some or several time slots is then added up congested number of time slots and judged congestion level more than or equal to predetermined downstream link overhead factor threshold value;
Step 305 triggers different congested processing schemes according to different congestion level, such as: dynamic channel adjustment (DCA), switching controls (HC), packet scheduling (PS) etc.
By the flow process of Fig. 2, Fig. 3 as can be seen, up identical with the downstream link overhead detection method.
Referring to Fig. 4, be congested handling process.Congested processing is after system receives the triggering result of congestion detection, selects suitable processing scheme according to congested grade, makes system as early as possible, as far as possible seamlessly get back to stable normal duty state.
Step 401, this congested handling process is to carry out after detecting the congestion detection status signal, triggers congested processing.
Step 402,403,405 is judged congestion level according to the congested number of time slot, makes congested processing take different strategies according to the congested number difference of time slot.Specifically, the number of time slots that is in congestion state according to uplink and downlink link in the same sub-district is determined the congestion level of sub-district exactly, such as accurate congestion state (congestion level I) and congestion state (congestion level II).Congestion level I is meant that a time slot is not congested at least in addition in up link or the down link, and congestion level I I is meant that all time slots are all congested in up link or the down link.Such as, dividing the TD-SCDMA system of (ratio 3: 3) for uplink and downlink business time-slot symmetry, congestion level I can be one, and time slot is congested or two time slots are congested, and congestion level II just is meant that three time slots all are in congestion state; And be the situation of asymmetric division for the uplink and downlink business time-slot, as in the TDD system, if establish the up n of having (n=1 ... 5) individual time slot, wherein m time slot is congested, and then the situation of m=n is congestion level II, and the situation of m<n is congestion level I.
Step 404, under the state of congestion level I, can carry out following processing to reduce the load of this time slot to the congested user of time slot, following processing method can all or part ofly adopt, comprise: trigger the DCA module, the certain user who is communicating by letter in this time slot is adjusted to other time slots; Trigger the AMRC module, reduce the voice service message transmission rate of communicating by letter in this time slot; Trigger the PS module, compress the pocket data transmission rate of communicating by letter in this time slot.
Step 406 under the state of congestion level II, can be carried out following processing to the congested user of time slot, and following processing method can all or part ofly adopt, and comprising: trigger the access thresholding of adjusting cell selecting; Forbid admitting in the control new user's access is judged, do not allow new user's access; Improve the switch decision thresholding, forbid switching the user and cut this sub-district; Trigger the load that AMRC module and PS module further reduce each time slot.
Referring to Fig. 5, for congested recovery detects and congested recovery handling process.The same with congestion detection, congested recovery detects, and also should to be unit with the time slot detect the congestion state of each time slot, and the load condition of all time slots is comprehensively judged in the comprehensive then sub-district, whether detected cells satisfy congested recovery condition.And the strategy that congested recovery is handled also should be determined according to the number of time slots that satisfies the congested recovery of time slot.
It is to be under the congested state in system that congested recovery detects, compare in a timing statistics according to load result calculated and the recovery threshold value of being scheduled to, if load result of calculation is lower than the recovery threshold value of setting, illustrative system has been eliminated congested, satisfy the sub-district and enter the congested condition that returns to form, can carry out congested recovery processing, thereby reach the effect of optimal utilization Internet resources.Concrete computational process can be referring to Fig. 1, that is: in fixed length is " slip " time window of N, each congested time slot to the uplink and downlink link calculates instantaneous load respectively one time every a sliding step, and each congested time slot of uplink and downlink link respectively calculates N time, and N is a positive integer; N instantaneous load result of calculation to each congested time slot of uplink and downlink link averages respectively, obtains the average load factor of each congested time slot of uplink and downlink link in the time window; With the average load factor of each congested time slot of uplink and downlink link of obtaining recover threshold value with uplink congestion respectively, downlink congestion recovers threshold value relatively, when less than the congested recovery threshold value of uplink and downlink, determine that this time slot satisfies congested recovery condition, otherwise determine that this time slot does not satisfy congested recovery condition.
Step 501, this congested recovery handling process return to form and carry out behind the signal detecting congestion detection, trigger congested recovery and handle.
Step 502,503,505, processing to congested recovery is similar with congested processing, the strategy that also adopt graduation, carries out step by step promptly detects when a time slot can recover or a plurality of time slot can recover or all time slot can recover, and adopts different recovery policies to handle respectively.Its detection is to judge congested restoration grade according to the congested recovery number of time slot, congested recovery is handled can be taked different recovery policies according to the number difference of the congested recovery of time slot.It is to the restriction of the congested time slot cancellation of having eliminated to its service transmission rate etc. that congested recovery is handled, and separates if all time slots all recover and closes the restriction that the sub-district is inserted.
Congested restoration grade also can have two kinds (I level, II levels) corresponding respectively accurate congested returning to form and congested returning to form.Its division is corresponding with the division of congestion level.Congested restoration grade I is meant to also have a time slot not satisfy congested recovery condition in up link or the down link at least, and congested restoration grade II is meant that all time slots all satisfy congested recovery condition in up link or the down link.Such as, divide the TD-SCDMA system of (ratio 3: 3) for uplink and downlink business time-slot symmetry, congested restoration grade I has a time slot to satisfy two time slots of congested recovery conditioned disjunction to satisfy congested recovery condition, and congestion level II just is meant that three time slots all satisfy congested recovery condition; And be the situation of asymmetric division for the uplink and downlink business time-slot, as the TDD system, n (n=1 is arranged if establish up link ... 5) individual time slot, wherein m time slot satisfies congested recovery condition, then the situation of m=n is congested restoration grade II, and the situation of m<n is congested restoration grade I.According to the congested restoration grade of this sub-district,, take different measures to handle to being in the different congested time slots that return to form.
Step 504, in congested restoration grade is under the state of I, by following technical measures the user who carried out congested processing in the congestion detection time slot is recovered, following technical measures can all carry out or select one of them to carry out, comprise: trigger the DCA module, the operation of other time slots is adjusted to the user in this time slot in cancellation; Trigger the AMRC module, recover the former voice service message transmission rate in this time slot; Trigger the PS module, recover the interior former pocket data transmission rate of this time slot etc.
Step 506, in congested restoration grade is under the state of II, by following technical measures the user who carried out congested processing in the congestion detection time slot is recovered, following technical measures can all carry out or select one of them to carry out, and comprising: trigger the former access thresholding that recovers cell selecting; During admitting and control, recovery, removes inserting new user's restriction to new user's access criterion; Recover the switch decision thresholding, remove and switch the restriction that the user inserts this sub-district; When carrying out abovementioned technology, can carry out the recovery measure of congested restoration grade I simultaneously.
By step 504,506, select suitable congested recovery processing scheme by the grade of congested recovery, make the Internet resources that utilize of system optimal, guarantee user's link-quality.
Referring to Fig. 6, be total handling process of congested control of the present invention and recovery.
Step 601 is at first carried out initialization;
Step 602 periodically receives the measured parameter data from the base station;
Step 603 is calculated the instantaneous load l of certain each time slot of cell i uplink and downlink link j, h respectively according to measured parameter data Ij, l Ih, and then the average load factor L of time window interior each time slot j, the h of calculating fixed length Ij, L Ih
Step 604 compares according to average load factor result calculated and the uplink and downlink congestion threshold value of being scheduled to then, judges whether each time slot in each uplink and downlink link of this i sub-district exists congested;
Step 605 if the average load factor result calculated of certain time slot judges then that greater than predetermined congestion threshold value this time slot is congested, is judged congestion level according to the number of congested time slot, carries out corresponding congested processing according to different congestion level.
Step 606 (can be set this section period) after the congested processing through a Measurement and Data Processing time, and whether detect in the uplink and downlink link of this cell i has time slot to satisfy congested recovery condition.
Step 607 if there is time slot to satisfy congested recovery condition, is then judged its congested restoration grade, and carries out corresponding congested recovery according to congested restoration grade and handle.
Step 608 has not been carried out congested recovery and is handled and then return if there is time slot to satisfy congested recovery conditioned disjunction.Finish this congested control and recover processing procedure, wait for the processing procedure of congested next time control and recovery.
Congested control of load among the present invention and recovery processing method are that unit carries out with the time slot, load condition and congestion condition by each time slot of uplink and downlink link in the real-time detected cells, and determine different congestion level or congested restoration grade according to congested number of time slots or congested recovery number of time slots, so that after appearance is congested, take the appropriate reasonably congested scheme that deals with, handle operation with recovering accordingly when the congested recovery, make system continue to keep normal load condition.The processing of congested control of the present invention and recovery can be carried out by the base station controller of mobile communication system.

Claims (10)

1. the processing method of congested control and recovery in the mobile communication system is characterized in that comprising:
A. detect the load of definite each time slot of cell uplink and each time slot of down link, and judge according to the testing result of each time-slot load whether each corresponding time slot is congested;
B. determine that according to being somebody's turn to do sub-district uplink and downlink link have congested number of time slots to determine the small area jam grade, and select to trigger dynamic channel allocation module, adaptive multi-rate control module, packet scheduling module, cell selecting module, admit control module, handover module to carry out congested processing according to the small area jam grade;
Whether the congested time slot that C. detects after step B handles satisfies congested recovery condition;
D. according to the number of time slots that satisfies congested recovery condition, determine the small area jam restoration grade, and select to trigger dynamic channel allocation module, adaptive multi-rate control module, packet scheduling module, cell selecting module, admit control module, handover module to carry out congested recovery processing according to the small area jam restoration grade.
2. the processing method of congested control and recovery in a kind of mobile communication system according to claim 1 is characterized in that: described steps A was periodically carried out by the time interval.
3. the processing method of congested control and recovery in a kind of mobile communication system according to claim 1, it is characterized in that described steps A, it is the average load factor that detects a definite cell uplink and each time slot of down link, with the average load factor of each time slot of uplink and downlink link of obtaining respectively with uplink congestion threshold value, downlink congestion threshold value relatively, when more than or equal to uplink and downlink congestion threshold value, determine that this time slot is congested, otherwise determine that this time slot is not congested.
4. the processing method of congested control and recovery in a kind of mobile communication system according to claim 3 is characterized in that the average load factor of described detection one definite cell uplink and each time slot of down link further comprises:
In fixed length is " slip " time window of N, each time slot of uplink and downlink link is calculated instantaneous load respectively one time every a sliding step, each time slot of uplink and downlink link respectively obtains N instantaneous load, and N is a positive integer;
N instantaneous load result of calculation to each time slot of uplink and downlink link averages respectively, obtains the average load factor of each time slot of uplink and downlink link in the time window.
5. the processing method of congested control and recovery in a kind of mobile communication system according to claim 4, it is characterized in that: the number of uplink and downlink chain time gap is by the pattern decision of symmetrical service or non-symmetrical service, in the symmetrical service pattern, the number of time slots of up link is identical with the number of time slots of down link, in the non-symmetrical service pattern, the number of time slots of up link and the number of time slots of down link are inequality.
6. the processing method of congested control and recovery in a kind of mobile communication system according to claim 1 is characterized in that described step B:
Described definite small area jam grade be with also have at least in cell uplink or the down link time slot not congested be defined as accurate congestion level, with all time slots in cell uplink or the down link all congested be defined as congestion level;
Describedly carry out corresponding congested processing according to the small area jam grade and comprise:
Aim at the congestion level sub-district, trigger the dynamic channel allocation module, the certain user who is communicating by letter in the congested time slot is adjusted to other time slots; And/or trigger the adaptive multi-rate control module, reduce the voice service message transmission rate of communicating by letter in the congested time slot; And/or trigger the packet scheduling module, compress the pocket data transmission rate of communicating by letter in the congested time slot;
To the congestion level sub-district, triggering cell is selected module and/or is admitted control module and/or handover module, adjusts access thresholding, the raising cell switch determining thresholding of sub-district, forbids that new user, switching user insert to this sub-district; And/or trigger the adaptive multi-rate control module, reduce the voice service message transmission rate of communicating by letter in the congested time slot; And/or trigger the packet scheduling module, compress the pocket data transmission rate of communicating by letter in the congested time slot, to reduce the load of congested time slot.
7. the processing method of congested control and recovery in a kind of mobile communication system according to claim 1 is characterized in that: described step C is at execution of step B, just carries out after the congested processing through a Measurement and Data Processing time.
8. the processing method of congested control and recovery in a kind of mobile communication system according to claim 1, it is characterized in that: described step C is the average load factor that detects up link and each congested time slot of down link, with the average load factor of each congested time slot of uplink and downlink link of obtaining recover threshold value with uplink congestion respectively, downlink congestion recovers threshold value relatively, when less than the congested recovery threshold value of uplink and downlink, determine that this time slot satisfies congested recovery condition, otherwise determine that this time slot does not satisfy congested recovery condition.
9. the processing method of congested control and recovery in a kind of mobile communication system according to claim 8 is characterized in that the average load factor of described detection up link and each congested time slot of down link further comprises:
In fixed length is " slip " time window of N, each congested time slot of uplink and downlink link is calculated instantaneous load respectively one time every a sliding step, each congested time slot of uplink and downlink link respectively calculates N time, and N is a positive integer;
N instantaneous load result of calculation to each congested time slot of uplink and downlink link averages respectively, obtains the average load factor of each congested time slot of uplink and downlink link in the time window.
10. the processing method of congested control and recovery is characterized in that described step D in a kind of mobile communication system according to claim 1, further comprises:
Described definite small area jam restoration grade is to also have a time slot not satisfy the accurate congested restoration grade that is defined as of congested recovery condition in cell uplink or the down link at least, all time slots in cell uplink or the down link all to be satisfied the congested restoration grade that is defined as of congested recovery condition;
Describedly carry out corresponding congested recovery according to the small area jam restoration grade and handle and comprise:
Aim at congested restoration grade sub-district, trigger the dynamic channel allocation module, cancellation is adjusted to other time slots with the certain user who is communicating by letter in the congested time slot; And/or trigger the adaptive multi-rate control module, recover the voice service message transmission rate of communicating by letter in the congested time slot; And/or trigger the packet scheduling module, recover the pocket data transmission rate of communicating by letter in the congested time slot;
To congested restoration grade sub-district, triggering cell is selected module and/or is admitted control module and/or handover module, recovers access thresholding, the recovery cell switch determining thresholding of cell selecting, removes new user, switches the user to forbidding that this sub-district is inserted; And/or trigger the adaptive multi-rate control module, recover the voice service message transmission rate of communicating by letter in the congested time slot; And/or trigger the packet scheduling module, recover the pocket data transmission rate of communicating by letter in the congested time slot.
CN 03136667 2003-05-23 2003-05-23 Congestion control and recovery processing method in mobile communication system Expired - Lifetime CN1286283C (en)

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CN101043427B (en) * 2006-05-24 2010-05-12 华为技术有限公司 Method for processing congestion
JP4805080B2 (en) * 2006-09-29 2011-11-02 株式会社エヌ・ティ・ティ・ドコモ Communication control method, radio base station, and radio control station
CN101179833B (en) * 2006-11-07 2011-08-10 中兴通讯股份有限公司 Congestion control method between base station and wireless network controller
CN101179355B (en) * 2006-11-08 2010-12-08 中兴通讯股份有限公司 Method of controlling flow between base station and wireless network controller
CN101772071B (en) * 2009-01-04 2012-01-11 中国移动通信集团公司 Method and device for controlling congestion of core network equipment
CN101877912B (en) * 2009-04-30 2012-09-05 电信科学技术研究院 Scheduling method and scheduler
CN101938822B (en) * 2009-07-02 2013-07-03 中兴通讯股份有限公司 Reverse power control method and reverse power control device
CN102006622B (en) * 2010-11-29 2015-05-20 中兴通讯股份有限公司 Switching method and system based on congestion control
CN102291813B (en) * 2011-08-04 2017-07-11 中兴通讯股份有限公司 A kind of Poewr control method and base station
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