CN101489280B - Method and apparatus for incremental resource consumption statistic - Google Patents
Method and apparatus for incremental resource consumption statistic Download PDFInfo
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Abstract
The present invention discloses a method for counting resource occupation increment. The resource occupation increment counting is used for updating the used resource of system, determining the admission request and allocating the system resource. The method comprises the following steps: obtaining user channel quality; selecting the code modulation format according to user channel quality and the error block rate requirement of requested admission service; and calculating the resource occupation increment of requested admission service according to the admission request speed of requested admission service and the code modulation format. The invention also simultaneously discloses a device for counting resource occupation increment. The processing result of device is used for updating the used resource of system, determining the admission request and allocating the system resource. The device comprises a user channel quality obtaining module, a modulation coding format selecting module and a resource occupation increment calculating module. The method and device provided by the invention for counting resource occupation increment reduces the error for counting the resource occupation and guarantees the normal operation of system service.
Description
Technical field
The present invention relates to the communication technology, be specifically related to a kind of method and apparatus of incremental resource consumption statistic.
Background technology
At 3G (Third Generation) Moblie (3
RdGeneration, 3G) in system and the wireless communication system in the past, behind every kind of business admission, system uses up to this service ending for the corresponding resource of this traffic assignments for it, this resource that aims at this traffic assignments is called private resource, adopts the system of this method of salary distribution then to be called as the private resource system.For example in Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system, after system admits the voice service of a 12.2kbit/s, can give the code channel of two SF=16 of this traffic assignments or the code channel of a SF=8, be called dedicated channel.Because dedicated channel can only be used by this business, and business is continuous distribution in time always not in use, may should business not be in active state within a certain period of time, but should the employed dedicated channel of business during this period of time still can't be used by other business, therefore, in 3G system and Previous System, business admission and resource allocation are finished in a process, and the mode of this business admission and resource allocation obviously can cause the insufficient of the utilization of resources.
Wireless communication system behind 3G, Long Term Evolution (Long Term Evolution for example, LTE) in the system, the bearer service data all be shared channel, all physical resources of system are shared by miscellaneous service, therefore these physical resources are also referred to as shared resource, and this system then is called as shared resource system.In shared resource system, certain business has just been admitted in business admission control, does not give the concrete physical resource of this traffic assignments, and the distribution of physical resource need be finished by scheduling process.
Business admission control has several different methods and criterion, wherein the most basic criterion to be based on the admittance control of resource occupation, and the fundamental formular of described admission control algorithm based on resource occupation comprises:
1) R
U_old+ Δ R
u＜R
U-threshold, be used to limit ascending resource and take the constraints that needs satisfy.
2) R
D_old+ Δ R
d＜R
D-threshold, be used to limit downlink resource and take the constraints that needs satisfy.
During professional an initiation, this business sends the request of admitting to system, and when the uplink and downlink resource occupation of the business of admitting when this request satisfied above-mentioned constraints respectively, this business was just allowed admittance by system, otherwise system excludes this request.
In above-mentioned formula, R
U_old/ R
D_oldOn representing respectively/and descending use resource, Δ R
u/ Δ R
dRespectively the expression request service needed of admitting newly-increased on/downlink resource takies R
U-threshold/ R
D-thresholdRespectively in the expression/threshold value that downlink resource takies.
In described private resource system, to the admittance of certain business mean determined should business resource occupation, i.e. Δ R
u/ Δ R
dDetermine.After this business admission success, Δ R
uCount R
U_old, Δ R
dThen count R
D_old, system admits when control follow-up to other business, can be based on (the R after promptly upgrading of the use resource after upgrading
U_oldAnd R
D_old) carry out.
But in shared resource system, there is unique determined value in the resource occupation of new admission service in the private resource system.But shared resource system still needs resource that system has been distributed and the professional possible resource occupation that this request is admitted to analyze, and can finish the resource allocation of new admission service.A kind of method of often using is at present: estimate speed and this professional resource occupation of miscellaneous service in advance, make table and wait to look into; When certain is professional when initiating to admit request, system tables look-up according to the speed and the actual admissible speed of this service request, with the estimated value in the table as Δ R
u/ Δ R
d, utilize the formula of described constraints to admit the judgement of control again.
Under the few situation of Modulation and Coding Scheme (MCS) combination, this rough statistical method of estimating in advance and tabulating is feasible, but in the LTE system, the channel circumstance variation, modulation system includes two-phase PSK (BPSK), quarternary phase-shift keying (QPSK) (QPSK), 16 quadrature amplitude modulation demodulation (16QAM) and 64 quadrature amplitude modulation demodulation multiple modes such as (64QAM), and coded system is various especially, thereby the possibility of combination is very complicated, the difference that the professional pairing physical resource of phase same rate takies is usually very big, therefore, this rough statistical method of the prior art will certainly cause the statistics to the resource occupation of request admission service error to occur, cause the utilization of resources insufficient, even can make the business of having admitted can't operate as normal.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of incremental resource consumption statistic, the error in the time of can reducing the resource occupation of adding up the request admission service.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of incremental resource consumption statistic, described incremental resource consumption statistic is used for the use resource of update system, and admits the judgement of request and the distribution of system resource, and this method comprises:
Obtain user channel quality;
Error block rate requirement according to user channel quality and request admission service is selected the modulating-coding form;
According to the admittance request rate and the described modulating-coding form of described request admission service, calculate the resource occupation increment of described request admission service.
A kind of device of incremental resource consumption statistic, the result of described device is used for the use resource of update system, and admit the judgement of request and the distribution of system resource, this device comprises: the user channel quality acquisition module, and the modulating-coding form is selected module and resource occupation increment computing module;
Described user channel quality acquisition module is used to obtain user channel quality;
Described modulating-coding form is selected module, selects the modulating-coding form according to the error block rate requirement of user channel quality that obtains and request admission service;
Described resource occupation increment computing module according to the admittance request rate and the described modulating-coding form of described request admission service, calculates the resource occupation increment of described request admission service.
As seen from the above technical solutions, the method and apparatus of this incremental resource consumption statistic of the embodiment of the invention, can be according to the difference of the professional corresponding physical resource occupation of identical admittance request rate in the different modulating coded format, utilize parameters such as admitting request rate and channel quality to calculate the resource occupation increment of request admission service exactly, thereby reduced the error of resource occupation statistics, make that the resource allocation and the use of system are more reasonable, guaranteed normally carrying out of system business.
Description of drawings
Fig. 1 is the schematic flow sheet of the method for incremental resource consumption statistic in the embodiment of the invention.
Fig. 2 is the composition structural representation of the device of incremental resource consumption statistic in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The method of the incremental resource consumption statistic that the embodiment of the invention proposes, its flow process as shown in Figure 1, comprising:
Step 101: obtain user channel quality;
Professional set up at first of terminal (UE), in the communication process UE have new business to initiate, revise business wireless access load-bearing (Radio Access Bearer RAB) and UE when initiating to switch, needs to carry out business admission control.These four kinds of situations can further be divided into again and can not accurately obtain channel quality and can accurately obtain two kinds of channel qualities, and the method for obtaining user channel quality under described two kinds of situations is respectively:
(1) in the time of can not accurately obtaining channel quality:
When this scene generally is first professional foundation of UE.At this moment, with average channel quality information (Channel Quality Information, CQI) as user channel quality information, the method for the acquisition of described average CQI has can be divided into three kinds:
A. admit the path loss of the UE of request according to initiation, the CQI that different path losses is corresponding different;
B. use UE to initiate to admit the average CQI of the sub-district of asking as user channel quality;
C. adopt default CQI value as user channel quality, described default CQI value can guarantee to transmit has enough redundancys, makes still to guarantee professional normally carrying out under the poorest channel condition.
(2) in the time of can accurately obtaining channel quality:
This scene generally is that UE has begun communication (being that UE has new business to initiate, revise under professional RAB and three kinds of situations of UE initiation switching in the described communication process), this moment is under the state that UE has begun to communicate by letter, UE can calculate the quality of down channel and report informing base station by CQI, the base station also can be calculated the quality of up channel by ascending channel detecting pilot frequency simultaneously, therefore the base station has obtained the channel quality information of up-downgoing this moment, then with the CQI that calculated as user channel quality.
Step 102: the error block rate requirement according to user channel quality and request admission service is selected modulating-coding form (MCS);
In the variable system of modulation coding mode, different modulation coding modes has different Block Error Rates (Block Error Rate, BLER) characteristic, therefore every kind of all corresponding CQI-BLER curve of modulation coding mode.(error block rate requirement as voice service is 10 to the error block rate requirement of the business of admitting according to request
-2) and step 101 in the CQI value that obtains, can on described CQI-BLER curve, determine the point of a correspondence, select to be positioned at the immediate curve below this point, then the pairing MCS mode of this curve is the MCS mode that meets the demands.
Step 103:, calculate this professional resource occupation increment according to the admittance request rate and the MCS of described request admission service.
The computing formula of described resource occupation increment is:
Wherein, Δ R is that increment takies resource, and R is the admittance request rate of described request admission service, can determine that T is the base unit of resource consumption statistic, B according to the business that concrete request is admitted
PRB(its numerical value is determined by MCS and concrete frame structure for PhysicalResource Block, the PRB) bit number that can carry for each Physical Resource Block; δ is the correction factor of factors such as re-transmission to resource occupation increment; Described each CALCULATION OF PARAMETERS method is prior art, no longer describes in detail herein.
For example, (Time Division Duplex TDD) in the system, is the base unit of resource consumption statistic with the field, i.e. resource occupation in the business admission control all is reflected as the stock number that on average takies at each field, T=5ms at the LTE-time division duplex.Modifying factor δ is fixed as 1.01, then can obtain described resource occupation increment according to described formula
By as seen above-mentioned, the method of the incremental resource consumption statistic that the embodiment of the invention proposes, can go out to ask the resource occupation increment of admission service according to calculation of parameter such as business admission request rate and corresponding channel quality, thereby can further obtain asking the resource occupation of admission service and new admission service, and these result of calculations are admitted as acceptance judging and service request finish the parameter that resource has been used in the back renewal, and can admit the judgement of request and the distribution of system resource according to the setting of described occupied resource, by this method, reduced the error of resource occupation statistics, make that the resource allocation and the use of system are more reasonable, guaranteed normally carrying out of system business.
The embodiment of the invention also provides a kind of device of incremental resource consumption statistic, and it forms structure as shown in Figure 2, and this device comprises: user channel quality acquisition module 210, and the modulating-coding form is selected module 220 and resource occupation increment computing module 230;
Described user channel quality acquisition module 210 is used to obtain user channel quality;
Described modulating-coding form is selected module 220, selects the modulating-coding form according to the error block rate requirement of user channel quality that obtains and request admission service;
Described resource occupation increment computing module 230 according to the admittance request rate of described request admission service and the modulating-coding form of selection, calculates the resource occupation increment of described request admission service.
Described user channel quality acquisition module 210 comprises the first channel quality computing unit 211 and second channel quality calculation unit 212;
The described first channel quality computing unit 211, be used in the time can't accurately obtaining channel quality, the channel quality that will obtain according to the path loss of the terminal of initiating the described request admittance is as user channel quality, or with the average channel quality of sub-district, terminal place as user channel quality, or default fixing user channel quality;
Described second channel quality calculation unit 212 is used in the time can accurately obtaining channel quality, and the channel quality that has obtained according to the base station obtains described user channel quality.
Described modulating-coding form selects module 220 to comprise characteristic curve memory cell 221 and form selected cell 222;
Described characteristic curve memory cell 221 is used to store the different user channel quality-Block Error Rate characteristic curve of various modulating-coding form correspondence;
Described form selected cell 222, the coordinate of selecting the described user channel quality and the error block rate requirement correspondence of request admission service from described characteristic curve is with the immediate curve of upper/lower positions, and selecting this curve corresponding codes form is qualified modulating-coding form.
Described resource occupation increment computing module 230 comprises parameter acquiring unit 231 and computing unit 232;
Described parameter acquiring unit 231 is obtained each parameters R in the system, T, B
PRBWith the value of δ, wherein R is the admittance request rate of described request admission service, and T is the base unit of resource consumption statistic, B
PRBBe the bit number that each Physical Resource Block can carry, δ is the correction factor of resource occupation increment, and described B
PRBDetermine by selected modulating-coding form;
Described computing unit 232, the modulating-coding form that the value of each parameter that obtains according to described parameter acquiring unit 231 and form selected cell 222 are selected utilizes formula
Calculate Δ R, described Δ R is the resource occupation increment of described request admission service.
By as seen above-mentioned, the device of the incremental resource consumption statistic that the embodiment of the invention proposes, can calculate the resource occupation increment of request admission service according to parameters such as business admission request rate and corresponding channel quality exactly, thereby reduced the error of resource occupation statistics, make that the resource allocation and the use of system are more reasonable, guaranteed normally carrying out of system business.
Simultaneously; understand easily, the above is preferred embodiment of the present invention only, is not to be used to limit spirit of the present invention and protection range; equivalent variations that any those of ordinary skill in the art made or replacement all should be considered as being encompassed within protection scope of the present invention.
Claims (7)
1. the method for an incremental resource consumption statistic, described incremental resource consumption statistic is used for the use resource of update system, and admits the judgement of request and the distribution of system resource, it is characterized in that this method comprises:
Obtain user channel quality;
Error block rate requirement according to user channel quality and request admission service is selected the modulating-coding form;
According to the admittance request rate and the described modulating-coding form of described request admission service, calculate the resource occupation increment of described request admission service, described calculating is specially:
Wherein, Δ R is the resource occupation increment of described request admission service, and R is the admittance request rate of described request admission service, and T is the base unit of resource consumption statistic, B
PRBBe the bit number that each Physical Resource Block can carry, δ is the correction factor of resource occupation increment.
2. method according to claim 1 is characterized in that, the described method of obtaining user channel quality is:
In the time can't accurately obtaining channel quality, the channel quality that will obtain according to the path loss of the terminal of initiating described admittance request is as user channel quality, or with the average channel quality of sub-district, terminal place as user channel quality, or default fixing user channel quality;
In the time can accurately obtaining channel quality, the channel quality that has obtained according to the base station obtains described user and believes logical quality.
3. method according to claim 1 is characterized in that, described error block rate requirement according to user channel quality and request admission service selects the method for modulating-coding form to be:
The corresponding separately different user channel quality of different modulating-coding forms-Block Error Rate characteristic curve, the coordinate of selecting the described user channel quality and the error block rate requirement correspondence of request admission service from described characteristic curve is with the immediate point of upper/lower positions, and selecting this place curve corresponding codes form is qualified modulating-coding form.
4. the device of an incremental resource consumption statistic, the result of described device is used for the use resource of update system, and admit the judgement of request and the distribution of system resource, it is characterized in that, this device comprises: the user channel quality acquisition module, and the modulating-coding form is selected module and resource occupation increment computing module;
Described user channel quality acquisition module is used to obtain user channel quality;
Described modulating-coding form is selected module, selects the modulating-coding form according to the error block rate requirement of user channel quality that obtains and request admission service;
Described resource occupation increment computing module, admittance request rate and described modulating-coding form according to the described request admission service utilize formula
Calculate the resource occupation increment of described request admission service, wherein, Δ R is the resource occupation increment of described request admission service, and R is the admittance request rate of described request admission service, and T is the base unit of resource consumption statistic, B
PRBBe the bit number that each Physical Resource Block can carry, δ is the correction factor of resource occupation increment.
5. device according to claim 4 is characterized in that, described user channel quality acquisition module comprises the first channel quality computing unit and second channel quality calculation unit;
The described first channel quality computing unit, be used in the time can't accurately obtaining channel quality, the channel quality that will obtain according to the path loss of the terminal of initiating described admittance request is as user channel quality, or with the average channel quality of sub-district, terminal place as user channel quality, or default fixing user channel quality;
Described second channel quality calculation unit is used in the time can accurately obtaining channel quality, and the channel quality that has obtained according to the base station obtains described user channel quality.
6. device according to claim 4 is characterized in that, described modulating-coding form selects module to comprise characteristic curve memory cell and form selected cell;
Described characteristic curve memory cell is used to store the different user channel quality-Block Error Rate characteristic curve of various modulating-coding form correspondence;
Described form selected cell, the coordinate of selecting the described user channel quality and the error block rate requirement correspondence of request admission service from described characteristic curve is with the immediate curve of upper/lower positions, and selecting this curve corresponding codes form is qualified modulating-coding form.
7. according to claim 4,5 or 6 described devices, it is characterized in that described resource occupation increment computing module comprises parameter acquiring unit and computing unit;
Described parameter acquiring unit is obtained each parameters R in the system, T, B
PRBWith the value of δ, wherein R is the admittance request rate of described request admission service, and T is the base unit of resource consumption statistic, B
PRBBe the bit number that each Physical Resource Block can carry, δ is the correction factor of resource occupation increment;
Described computing unit, the modulating-coding form that the value of each parameter that obtains according to described parameter acquiring unit and form selected cell are selected utilizes formula
Calculate Δ R, described Δ R is the resource occupation increment of described request admission service.
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| EP3444979B1 (en) | 2016-05-12 | 2024-09-25 | Huawei Technologies Co., Ltd. | Data transmission method, device and system |
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| WO2001017126A1 (en) * | 1999-08-27 | 2001-03-08 | Telefonaktiebolaget Lm Ericsson (Publ) | A method and a device for improving the capacity of a gsm base station |
| CN1829131A (en) * | 2005-03-04 | 2006-09-06 | 松下电器产业株式会社 | Resource Allocation Method in Orthogonal Frequency Division Multiplexing Wireless Multimedia System |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001017126A1 (en) * | 1999-08-27 | 2001-03-08 | Telefonaktiebolaget Lm Ericsson (Publ) | A method and a device for improving the capacity of a gsm base station |
| CN1829131A (en) * | 2005-03-04 | 2006-09-06 | 松下电器产业株式会社 | Resource Allocation Method in Orthogonal Frequency Division Multiplexing Wireless Multimedia System |
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| 赵铁军.OFDM信道估计及自适应资源分配算法研究.中国优秀硕士学位论文全文数据库.2007,(第6期),2.3.1-2.3.3，5.1.2-5.1.3. * |
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