CN102164412B - Resource scheduling method and device for guaranteed bit rate service - Google Patents
Resource scheduling method and device for guaranteed bit rate service Download PDFInfo
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Abstract
The invention discloses a resource scheduling method and a resource scheduling device for guaranteed bit rate service, so that the quality of service (QoS) performance of downlink guaranteed bit rate (GBR) service of a terminal is guaranteed. The method comprises the following step of: before allocation of resources to the GBR service of the terminal, acquiring a data volume of each GBR downlink service needed to be transmitted to meet the GBR according to a historical traffic flow of a downlink logic channel corresponding to each downlink GBR service of the terminal, so that the GBR of each downlink GBR service is guaranteed.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to resource regulating method and the device of a kind of GBR (Guaranteed Bit Rate ensures bit rate) business.
Background technology
At present at LTE (Long Term Evolution, long evolving system) in technical field, different business is and DRB (the Data Radio Bearer of system made, Data Radio Bearer) one to one, and at eNB (evolvedNodeB, the Node B of evolution) realization in the scheduler subsystem of side wireless access part is foundation maintenance and DRB logic channel one to one, the QoS association attributes of corresponding business is associated with logic channel simultaneously.According to MAC (Media Access Control, media interviews control) statement of layer protocol (36.321), whole eNB side wireless access is divided into the processing of up-downgoing two parts, to process separately for the each descending logic channel corresponding with UE business in eNB side, therefore eNB side scheduler subsystem ensures with the resource scheduling processing method of MBR (Maximum Bit Rate, maximum bit rate) restriction it is to act on the QoS of survice attribute of the descending logic channel corresponding with business and descending logic channel to the signing descending GBR business GBR of UE.
The scheduling of resource of the descending logic channel of present GB R business is processed the method as described below that adopts:
For the GBR transfer of data of the descending logic channel of GBR business, in 1 second, to meet total amount of data mean allocation that GBR and MBR needs transmit to each TTI (Transmission TimeInterval, Transmission Time Interval), for example, FDD (Frequency Division Duplex, Frequency Division Duplexing (FDD)) GBR of GBR business is configured to 512kbps (kilobits per second under pattern, kilobit is per second), be per secondly will transmit 64000 bytes, after being assigned to each TTI, need to transmit 64 bytes, calculate like this BSR (the Buffer Status Report that need to transmit system after scheduling resource according to 64 bytes for current logic channel at each TTI, Buffer Status Report) limit, each TTI only transmits 64 bytes.
Simultaneously, ensure just on the basis of GBR, to add that a penalty coefficient carries out Resources allocation guarantee and restriction for the GBR of descending GBR business, for example GBR (1+10%), lower limit and the upper limit only adopt this value, are also to use this upper limit parameter as the upper limit to MBR.
The shortcoming that above-mentioned existing method exists the descending QoS performance of business to be met, specifically comprises following several aspect:
(1) because having carried out each TTI, the GBR of the descending GBR business in 1 second is averaged, when business is that small band is when wide, the data volume that logic channel corresponding to this business of each TTI calculates scheduling is too little, by too small the resource byte number that causes distributing for current business, if be less than system and can organize the minimum byte data of bag, will cause business bust this;
(2) prior art is that the GBR mean allocation of all descending GBR business current UE is carried out to scheduled transmission to each TTI (ms), when UE exists BLER (Block Error Rate, Block Error Rate) time, the data that are not each TTI can correctly be transmitted, thereby cannot ensure the GBR of descending GBR business;
(3) method of the increase penalty coefficient adopting is at present that GBR and MBR adopt same value, cannot meet the rate variation demand in GBR and MBR interval.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of resource regulating method and device that ensures bit rate business, ensures the QoS performance of descending GBR business.
In order to address the above problem, the invention provides a kind of resource regulating method that ensures bit rate business, described method comprises:
Before guarantee bit rate (GBR) business of terminal is carried out to resource distribution, according to the historical service traffics of descending logic channel corresponding to each descending GBR business of this terminal, show that each GBR downlink business meets the data volume that GBR needs transmit, to ensure the GBR of each descending GBR business.
Further, show that in the following manner each descending GBR business meets the data volume that GBR needs transmit:
The GBR nominal value of each descending GBR business configuration is deducted to the historical service traffics of descending logic channel corresponding to this descending GBR business, show that this GBR downlink business meets the data volume that GBR needs transmit.
Further, one by one each descending GBR business of described terminal is carried out to GBR guarantee, until complete described terminal all descending GBR business GBR ensure or described terminal distribution to downlink transfer resource be all assigned.
Further, ensure in the following manner the GBR of each descending GBR business: meet if the current downlink transfer resource of described terminal is greater than this descending GBR business the data volume that GBR needs transmit, the downlink transfer resource of distributing to descending logic channel corresponding to this descending GBR business is that this descending GBR business meets the data volume that GBR needs transmit, and the current residue downlink transfer resource of described terminal is carried out to the GBR guarantee of next descending GBR business; Otherwise, by described terminal distribution to downlink transfer resource all distribute to descending logic channel corresponding to this descending GBR business;
Wherein, for first descending GBR business of described terminal, the current downlink transfer resource of described terminal is the downlink transfer resource being assigned to by resource allocation flow; For other descending GBR business, the current downlink transfer resource of described terminal has been remaining downlink transfer resource after the GBR of a upper descending GBR business ensures.
Further, described method also comprises:
According to the historical service traffics of descending logic channel corresponding to each descending GBR business of described terminal, show that in the following manner each descending GBR business reaches the data volume that maximum bit rate (MBR) restriction needs transmission:
The MBR nominal value of each descending GBR business configuration is deducted to the historical service traffics of descending logic channel corresponding to this descending GBR business, show that this descending GBR business meets the data volume that MBR needs transmit.
Further, described method also comprises:
The summation that reaches the data volume that MBR need to transmit of the descending logic channel of all descending GBR business of computing terminal, descending total buffer status report (BSR) current with described terminal compares, and gets the data volume that the smaller in the two is transmitted as the current needs of described terminal.
Further, described method also comprises:
Show that each descending GBR business meets the data volume that GBR needs transmit and reaches after the data volume that MBR restriction needs transmit, and calculates both differences;
After the GBR of all descending GBR business of described terminal has ensured, if the downlink transfer resource of described terminal also has residue, according to described difference, the descending logic channel of described terminal is carried out to following MBR restriction one by one: if the downlink transfer resource of described terminal residual is less than described difference, the transfer resource of distributing to described the first descending logic channel is that this descending GBR business meets the downlink transfer resource that data volume that GBR needs transmit adds the above terminal residual; Otherwise, the transfer resource of distributing to this descending logic channel is that this descending GBR business meets the data volume that GBR needs transmit and adds the above difference, and the downlink transfer resource of described terminal residual is deducted to described difference, carry out the MBR restriction of next descending GBR business.
Further, adopt the mode of sliding window statistics to count the historical service traffics in a second of descending logic channel corresponding to each descending GBR business, the number of wherein said sliding window equals the number of interior Transmission Time Interval per second (TTI).
The present invention also provides a kind of resource scheduling device that ensures bit rate business, be applied to base station scheduling subsystem, described device comprises scheduling of resource pretreatment module, and described scheduling of resource pretreatment module further comprises that GBR transmit buffering unit and GBR ensure unit, wherein:
Described GBR transmit buffering unit is used for, before each descending GBR business of terminal is carried out to resource distribution, according to the historical service traffics of descending logic channel corresponding to each descending GBR business of this terminal, show that each descending GBR business meets the data volume that GBR needs transmit;
Described GBR ensures that unit is used for, and meets data volume that GBR needs transmit and ensure the GBR of each descending GBR business according to described each descending GBR business.
Further, described GBR ensure unit also for, one by one each descending GBR business of described terminal is carried out to GBR guarantee, until complete described terminal all descending GBR business GBR ensure or described terminal distribution to downlink transfer resource be all assigned.
Further, described GBR ensure unit also for, ensure in the following manner the GBR of each descending GBR business:
If being greater than this descending GBR business, the current downlink transfer resource of described terminal meets the data volume that GBR needs transmit, the downlink transfer resource of distributing to descending logic channel corresponding to this descending GBR business is that this descending GBR business meets the data volume that GBR needs transmit, and the current residue downlink transfer resource of described terminal is carried out to the GBR guarantee of next descending GBR business; Otherwise, by described terminal distribution to downlink transfer resource all distribute to descending logic channel corresponding to this descending GBR business;
Wherein, for first descending GBR business of described terminal, the current downlink transfer resource of described terminal is the downlink transfer resource being assigned to by resource allocation flow; For other descending GBR business, the current downlink transfer resource of described terminal has been remaining downlink transfer resource after the GBR of a upper descending GBR business ensures.
Further, described scheduling of resource pretreatment module also comprises MBR transmit buffering unit, for according to the historical service traffics of descending logic channel corresponding to each descending GBR business of described terminal, show that each descending GBR business reaches the data volume that MBR restriction needs transmission.
Further, described scheduling of resource pretreatment module also comprises the BSR determining unit being connected with described MBR buffer cell,
Described BSR determining unit is used for, the MBR that reaches that calculates the descending logic channel of all descending GBR business of described terminal limits the summation that needs the data volume of transmitting, the descending total BSR current with described terminal compares, and gets the data volume that the smaller in the two is transmitted as the current needs of described terminal.
Further, described device also comprises scheduling of resource post-processing module, and described scheduling of resource post-processing module further comprises connected Delta computing unit and MBR limiting unit,
Described Delta computing unit is used for, and show that each descending GBR business meets the data volume that GBR needs transmit and reaches after the data volume that MBR restriction needs transmit, and calculates both differences;
Described MBR limiting unit is used for, after the GBR of all descending GBR business of described terminal has ensured, if the downlink transfer resource of described terminal also has residue, according to described difference, the descending logic channel of described terminal is carried out to following MBR restriction one by one: if the downlink transfer resource of described terminal residual is less than described difference, the transfer resource of distributing to described the first descending logic channel is that this descending GBR business meets the downlink transfer resource that data volume that GBR needs transmit adds the above terminal residual; Otherwise, the transfer resource of distributing to this descending logic channel is that this descending GBR business meets the data volume that GBR needs transmit and adds the above difference, and the downlink transfer resource of described terminal residual is deducted to described difference, carry out the MBR restriction of next descending GBR business.
Adopt resource scheduling processing method of the present invention, the descending GBR business GBR that can solve existing UE ensure and MBR restriction in scheduling of resource and distribute the little rate business bringing obstructed, due to the problem that exists BLER to cause GBR not to ensure, can be good at accomplishing meeting service rate variation demand within the scope of the descending GBR business GBR guarantee of UE and MBR limit section.
Brief description of the drawings
Fig. 1 is the descending GBR service resources dispatching method pretreatment process schematic diagram of the embodiment of the present invention;
Fig. 2 is the descending GBR service resources dispatching method scheduling reprocessing schematic flow sheet of the embodiment of the present invention.
Embodiment
The object of the invention is to propose a kind of source scheduling mode, for solve existing descending GBR business QoS of survice performance requirement realize process exist shortcoming and defect so that better realize descending GBR business GBR ensure and MBR limit procedure in scheduling of resource.
Basic thought of the present invention is, descending GBR business is realized in the fixed range that GBR ensures and MBR limits to the scheduling of resource processing of transmission, first ensure to meet GBR, when resource has residue, just continue this GBR business to carry out scheduling of resource, and limit according to MBR.
Based on above-mentioned thought, Fig. 1 and Fig. 2 show the resource scheduling scheme that the GBR that meets descending GBR business ensures and MBR limits that the embodiment of the present invention provides, and this scheme comprises the scheduling reprocessing two parts after scheduling preliminary treatment and the resource distribution before resource is distributed.
The pretreated idiographic flow of scheduling of the scheduling of resource processing scheme that as shown in Figure 1, the embodiment of the present invention provides can comprise the steps:
Step 101, before each TTI scheduling, the scheduling of resource " logic channel transfer resource " (referring to the resource that logic channel obtains) existing according to history, to implementing the Business Stream quantitative statistics of the transmission success based in 1 second on logic channel corresponding to the each descending GBR business of each UE, obtain the statistical value of the service traffics of current total transmission success, be below called " successful service traffics " (Byte of unit);
Step 102, according to GBR and the MBR nominal value (bps of unit of " the successful service traffics " of the descending logic channel of each descending GBR business and this descending GBR business downstream arrangements (radio resource control RRC by eNB is passed through signal deployment), in corresponding 1 second, meet the data volume that configured rate needs transmit and be called " GBR " and " MBR ", the Byte of its unit), calculate this descending GBR business of this TTI and meet the data volume size that GBR needs transmit, be below called " GBR transmit buffering ":
" GBR transmit buffering "=" GBR "-" successful service traffics "
Data volume size with reaching the transmission of MBR restriction needs, is below called " MBR transmit buffering ":
" MBR transmit buffering "=" MBR "-" successful service traffics ",
And calculate the two difference " Delta transmit buffering ":
" Delta transmit buffering "=" MBR transmit buffering "-" GBR transmit buffering ".
Step 103, " the MBR transmit buffering " of the descending logic channel to the signing all descending GBR business of this UE sues for peace, and draws " the MBR transmit buffering summation " of this UE;
Step 104, the relatively total descending BSR value (Byte of unit) of the reality of current UE and the size of " MBR transmit buffering summation ", and get wherein smaller as final BSR value, for normal resource allocation flow;
Wherein, the object of getting smaller is to determine BSR value according to actual amount of data size, like this, if " MBR transmit buffering summation " is little, can accomplish MBR restriction; If BSR is little, can distribute according to actual amount of data, can not waste resource.
Step 105, carries out UE resource allocation flow according to LTE agreement regulation.
The idiographic flow of the scheduling reprocessing of the scheduling of resource processing scheme that as shown in Figure 2, the embodiment of the present invention provides can comprise the steps:
Step 201, for each UE that is assigned to downlink resource by normal resource allocation flow, according to its be assigned to real resource size " UE transfer resource " (UE actual allocated to resource may be less than or equal to above definite BSR value) (Byte of unit) be assigned on the descending logic channel of each GBR business, first can ensure in the following way each descending GBR business descending " the GBR transmit buffering " of (GBR business hereinafter if no special instructions, all refers to descending GBR business):
For first descending logic channel, if " UE transfer resource " is greater than " GBR transmit buffering ", " logic channel transfer resource "=" GBR transmit buffering ", " UE transmits surplus resources "=" UE transfer resource "-" GBR transmit buffering "; Otherwise, " logic channel transfer resource "=" UE transfer resource ".
Step 202, judges whether non-last GBR business, and UE residue transfer resource > 0, if not last GBR business, and UE residue transfer resource > 0, return to step 201; Otherwise, execution step 203;
Step 203, judges that whether UE residue transfer resource is greater than 0, if so, performs step 204; Otherwise execution step 206;
Wherein, the object of this step 202 and step 203 is that " GBR transmit buffering " part of descending GBR business all in this UE is processed one by one, after descending " the GBR transmit buffering " of first descending logic channel, there is surplus resources if ensured, ensure again descending " the GBR transmit buffering " of second descending logic channel according to " UE transmits surplus resources ", by that analogy.
Step 204, after the GBR of all signed descending GBR business of current UE has been ensured, descending surplus resources " UE the transmits surplus resources " basis " Delta transmit buffering " that previous step processing is obtained is distributed to the descending logic channel of each GBR business, to obtain the restriction effect to the MBR upper limit, concrete assigning process is as follows:
If " UE transmits surplus resources " is greater than " Delta transmit buffering ", " logic channel transfer resource "=" logic channel transfer resource "+" Delta transmit buffering ", now, upgrade " UE transmits surplus resources " " UE transmission surplus resources (after upgrading) "=" UE transmission surplus resources (before renewal) "-" Delta transmit buffering "; Otherwise, " logic channel transfer resource "=" logic channel transfer resource "+" UE transmits surplus resources ".
Step 205, judges whether non-last GBR business, and UE residue transfer resource > 0, if not last GBR business, and UE residue transfer resource > 0, return to step 204; Otherwise execution step 206;
Wherein, this step is the equal of that " the Delta transmit buffering " of GBR business all in this UE processed one by one, for UE transmission surplus resources, first on first descending logic channel, carry out after MBR restriction, if also have surplus resources, on second descending logic channel, carry out MBR restriction ... until " UE transmits surplus resources " is zero, the whole end of transmissions of downlink transfer resource.
Step 206, the resource of descending logical channel assignment is: " logic channel transfer resource "=" logic channel transfer resource "+" Delta transmit buffering ";
Step 207, the result of distributing according to the descending logic channel scheduling of resource of UE is organized corresponding scheduling result and is sent.
Below in conjunction with concrete application example of the present invention, the enforcement of technical solution of the present invention is described in further detail.The concrete implementing procedure of this application example is as follows:
One, scheduling preliminary treatment:
1, historical traffic statistics:
Historical flow summation " successful service traffics " in UE signed descending GBR business 1 second obtain the mode that adopts sliding window statistics, each TTI uses a buffering window, within 1 second, there are 1000 TTI, so statistics needs 1000 buffering windows altogether, keep the method for 1 second throughput:
(1) if the GBR business downstream feedback of the UE that current TTI eNB scheduler subsystem is received is Ack (Acknowledgment, confirm), in " successful service traffics ", add previous T TI " logic channel transfer resource ", deduct " the logic channel transfer resource " of the previous TTI preservation in 1 second;
(2) if receive for Nack (Negative Acknowledgment, Negative Acknowledgement), do not add previous T TI " logic channel transfer resource ", only deduct " the logic channel transfer resource " of a TTI the earliest who preserved before 1 second;
2, the descending logic channel scheduling of resource of the GBR business preliminary treatment of UE:
Example: having two descending logic channels corresponding to GBR business under a UE is LCH1 and LCH2,
(1) to distribute be not 1Kbps and 1.5Kbps in the GBR of LCH1 and MBR configuration, and the GBR of LCH2 and MBR configuration distribution Wei 1.5Kbps and 2Kbps;
(2) " the successful service traffics " that count are respectively LCH1 100Bytes, LCH2 120Bytes;
(3) the total BSR value of UE is 200Bytes.
Concrete result is as follows:
The first step: calculate " GBR transmit buffering ", " the MBR transmit buffering " and " Delta transmit buffering " of two descending logic channels of GBR business,
LCH1: " GBR transmit buffering "=1000/8-100=125-100=25Bytes
" MBR transmit buffering "=1500/8-100=187.5-100=87.5Bytes
" Delta transmit buffering "=87.5-25=62.5Bytes
LCH2: " GBR transmit buffering "=1500/8-120=187.5-120=67.5Bytes
" MBR transmit buffering "=2000/8-100=250-120=130Bytes
" Delta transmit buffering "=130-67.5=62.5Bytes
Second step: calculate " MBR transmit buffering " sum of two descending logic channels of GBR business, " MBR transmit buffering summation "=87.5+130=217.5Bytes;
The 3rd step: relatively the actual total BSR value of UE is got little person with the size of " MBR transmit buffering summation " value and is the BSR of UE for Resources allocation, because BSR < " MBR transmit buffering summation " gets final BSR=200Bytes.
Two, scheduling reprocessing:
1, the descending logic channel resource of the GBR business pre-scheduling processing of UE:
The first step: according to the descending logic channel scheduling of resource of UE two GBR business preliminary treatment result, " UE transfer resource " that UE is distributed by normal resource allocation flow distributes to each descending logic channel, first ensure GBR, the final BSR value 200Bytes calculating when " UE transfer resource " that if this UE is assigned to is preliminary treatment
LCH1: " logic channel transfer resource " of " UE transfer resource " > " GBR transmit buffering "=" GBR transmit buffering "=25Bytes
" UE transmits surplus resources "=" UE transfer resource "-" GBR transmit buffering "=175Bytes
LCH2: " logic channel transfer resource " of " UE transfer resource " > " GBR transmit buffering "=" GBR transmit buffering "=67.5Bytes
" UE transmits surplus resources "=" UE transfer resource "-" GBR transmit buffering "=107.5Bytes
Second step: judgement " UE transmits surplus resources " > 0, continue the difference part between " MBR transmit buffering " and " the GBR transmit buffering " of assignment logic channel, to limit the upper limit of MBR,
LCH1: " Delta transmit buffering " < " UE transmits surplus resources ",
" logic channel transfer resource "=" logic channel transfer resource "+" Delta transmit buffering "=25+87.5=112.5Bytes
" UE transmits surplus resources "=" UE transmits surplus resources "-" Delta transmit buffering "=107.5-87.5=20Bytes
LCH2: " Delta transmit buffering " > " UE transmits surplus resources ",
" logic channel transfer resource "=" logic channel transfer resource "+" UE transmits surplus resources "=67.5+20=87.5Bytes,
And " UE transmits surplus resources "=0Bytes.
The 3rd step: the result organizational scheduling result of distributing according to the descending logic channel scheduling of resource of UE issues, now, can be with following content when the scheduling result of UE issues, " the logic channel transfer resource " of " UE transfer resource ", LCH1 and " the logic channel transfer resource " of LCH2.
Meanwhile, " the logic channel transfer resource " obtaining through reprocessing is here for the historical throughput statistics of success of descending logic channel group, and then decision scheduling of resource processing next time.
In addition, the present invention is also corresponding provides a kind of resource scheduling device that ensures bit rate business, can be applicable to base station scheduling subsystem, and this device comprises scheduling of resource pretreatment module, described scheduling of resource pretreatment module further comprises that GBR transmit buffering unit and GBR ensure unit, wherein:
Described GBR transmit buffering unit is used for, before each descending GBR business of terminal is carried out to resource distribution, according to the historical service traffics of descending logic channel corresponding to each descending GBR business of this terminal, show that each descending GBR business meets the data volume that GBR needs transmit;
Described GBR ensures that unit is used for, and meets data volume that GBR needs transmit and ensure the GBR of each descending GBR business according to described each descending GBR business.
Further, described GBR ensure unit also for, one by one each descending GBR business of described terminal is carried out to GBR guarantee, until complete described terminal all descending GBR business GBR ensure or described terminal distribution to downlink transfer resource be all assigned.
Further, described GBR ensure unit also for, ensure in the following manner the GBR of each descending GBR business:
If being greater than this descending GBR business, the current downlink transfer resource of described terminal meets the data volume that GBR needs transmit, the downlink transfer resource of distributing to descending logic channel corresponding to this descending GBR business is that this descending GBR business meets the data volume that GBR needs transmit, and the current residue downlink transfer resource of described terminal is carried out to the GBR guarantee of next descending GBR business; Otherwise, by described terminal distribution to downlink transfer resource all distribute to descending logic channel corresponding to this descending GBR business;
Wherein, for first descending GBR business of described terminal, the current downlink transfer resource of described terminal is the downlink transfer resource being assigned to by resource allocation flow; For other descending GBR business, the current downlink transfer resource of described terminal has been remaining downlink transfer resource after the GBR of a upper descending GBR business ensures.
Further, described scheduling of resource pretreatment module also comprises MBR transmit buffering unit, for according to the historical service traffics of descending logic channel corresponding to each descending GBR business of described terminal, show that each descending GBR business reaches the data volume that MBR restriction needs transmission.
Further, described scheduling of resource pretreatment module also comprises the BSR determining unit being connected with described MBR buffer cell,
Described BSR determining unit is used for, the MBR that reaches that calculates the descending logic channel of all descending GBR business of described terminal limits the summation that needs the data volume of transmitting, the descending total BSR current with described terminal compares, and gets the data volume that the smaller in the two is transmitted as the current needs of described terminal.
Further, described device also comprises scheduling of resource post-processing module, and described scheduling of resource post-processing module further comprises connected Delta computing unit and MBR limiting unit,
Described Delta computing unit is used for, and show that each descending GBR business meets the data volume that GBR needs transmit and reaches after the data volume that MBR restriction needs transmit, and calculates both differences;
Described MBR limiting unit is used for, after the GBR of all descending GBR business of described terminal has ensured, if the downlink transfer resource of described terminal also has residue, according to described difference, the descending logic channel of described terminal is carried out to following MBR restriction one by one: if the downlink transfer resource of described terminal residual is less than described difference, the transfer resource of distributing to described the first descending logic channel is that this descending GBR business meets the downlink transfer resource that data volume that GBR needs transmit adds the above terminal residual; Otherwise, the transfer resource of distributing to this descending logic channel is that this descending GBR business meets the data volume that GBR needs transmit and adds the above difference, and the downlink transfer resource of described terminal residual is deducted to described difference, carry out the MBR restriction of next descending GBR business.
In sum, key technology point of the present invention is, in scheduling preliminary treatment and last handling process before and after the descending logic channel resource of the GBR of UE business is distributed, the descending logic channel of GBR business is needed to the scheduling preliminary treatment of transmitted data amount, and dispatch reprocessing according to descending logic channel after being assigned to resource.The present invention meets GBR business GBR can dispatch according to UE under LTE wireless access technology time ensures and MBR limiting performance demand.
Claims (14)
1. a resource regulating method that ensures bit rate business, is characterized in that, described method comprises:
Before guarantee bit rate (GBR) business of terminal is carried out to resource distribution, according to the historical service traffics of descending logic channel corresponding to each descending GBR business of this terminal, show that each descending GBR business meets the data volume that GBR needs transmit, to ensure the GBR of each descending GBR business, wherein, described historical service traffics are the Business Stream quantitative statistics to implementing the transmission success based in 1 second on logic channel corresponding to the each descending GBR business of each terminal, obtain the statistical value of the service traffics of current total transmission success.
2. the method for claim 1, is characterized in that,
Show that in the following manner each descending GBR business meets the data volume that GBR needs transmit:
The GBR nominal value of each descending GBR business configuration is deducted to the historical service traffics of descending logic channel corresponding to this descending GBR business, show that this descending GBR business meets the data volume that GBR needs transmit.
3. method as claimed in claim 1 or 2, is characterized in that,
One by one each descending GBR business of described terminal is carried out to GBR guarantee, until complete described terminal all descending GBR business GBR ensure or described terminal distribution to downlink transfer resource be all assigned.
4. method as claimed in claim 3, is characterized in that,
Ensure in the following manner the GBR of each descending GBR business: meet if the current downlink transfer resource of described terminal is greater than this descending GBR business the data volume that GBR needs transmit, the downlink transfer resource of distributing to descending logic channel corresponding to this descending GBR business is that this descending GBR business meets the data volume that GBR needs transmit, and the current residue downlink transfer resource of described terminal is carried out to the GBR guarantee of next descending GBR business; Otherwise, by described terminal distribution to downlink transfer resource all distribute to descending logic channel corresponding to this descending GBR business;
Wherein, for first descending GBR business of described terminal, the current downlink transfer resource of described terminal is the downlink transfer resource being assigned to by resource allocation flow; For other descending GBR business, the current downlink transfer resource of described terminal has been remaining downlink transfer resource after the GBR of a upper descending GBR business ensures.
5. the method for claim 1, is characterized in that, described method also comprises:
According to the historical service traffics of descending logic channel corresponding to each descending GBR business of described terminal, show that in the following manner each descending GBR business reaches the data volume that maximum bit rate (MBR) restriction needs transmission:
The MBR nominal value of each descending GBR business configuration is deducted to the historical service traffics of descending logic channel corresponding to this descending GBR business, show that this descending GBR business meets the data volume that MBR needs transmit.
6. method as claimed in claim 5, is characterized in that, described method also comprises:
The summation that reaches the data volume that MBR need to transmit of the descending logic channel of all descending GBR business of computing terminal, descending total buffer status report (BSR) current with described terminal compares, and gets the data volume that the smaller in the two is transmitted as the current needs of described terminal.
7. method as claimed in claim 5, is characterized in that, described method also comprises:
Show that each descending GBR business meets the data volume that GBR needs transmit and reaches after the data volume that MBR restriction needs transmit, and calculates both differences;
After the GBR of all descending GBR business of described terminal has ensured, if the downlink transfer resource of described terminal also has residue, according to described difference, the descending logic channel of described terminal is carried out to following MBR restriction one by one: if the downlink transfer resource of described terminal residual is less than described difference, the transfer resource of distributing to first descending logic channel is that this descending GBR business meets the downlink transfer resource that data volume that GBR needs transmit adds the above terminal residual; Otherwise, the transfer resource of distributing to this descending logic channel is that this descending GBR business meets the data volume that GBR needs transmit and adds the above difference, and the downlink transfer resource of described terminal residual is deducted to described difference, carry out the MBR restriction of next descending GBR business.
8. method as claimed in claim 1 or 2, is characterized in that,
Adopt the mode of sliding window statistics to count the historical service traffics in a second of descending logic channel corresponding to each descending GBR business, the number of wherein said sliding window equals the number of interior Transmission Time Interval per second (TTI).
9. one kind ensures the resource scheduling device of bit rate business, it is characterized in that, be applied to base station scheduling subsystem, described device comprises scheduling of resource pretreatment module, described scheduling of resource pretreatment module further comprises that GBR transmit buffering unit and GBR ensure unit, wherein:
Described GBR transmit buffering unit is used for, before each descending GBR business of terminal is carried out to resource distribution, according to the historical service traffics of descending logic channel corresponding to each descending GBR business of this terminal, show that each descending GBR business meets the data volume that GBR needs transmit; Wherein, described historical service traffics are the Business Stream quantitative statistics to implementing the transmission success based in 1 second on logic channel corresponding to the each descending GBR business of each terminal, obtain the statistical value of the service traffics of current total transmission success;
Described GBR ensures that unit is used for, and meets data volume that GBR needs transmit and ensure the GBR of each descending GBR business according to described each descending GBR business.
10. resource scheduling device as claimed in claim 9, is characterized in that,
Described GBR ensure unit also for, one by one each descending GBR business of described terminal is carried out to GBR guarantee, until complete that the GBR of all descending GBR business of described terminal ensures or described terminal distribution to downlink transfer resource be all assigned.
11. resource scheduling devices as claimed in claim 10, is characterized in that,
Described GBR ensure unit also for, ensure in the following manner the GBR of each descending GBR business:
If being greater than this descending GBR business, the current downlink transfer resource of described terminal meets the data volume that GBR needs transmit, the downlink transfer resource of distributing to descending logic channel corresponding to this descending GBR business is that this descending GBR business meets the data volume that GBR needs transmit, and the current residue downlink transfer resource of described terminal is carried out to the GBR guarantee of next descending GBR business; Otherwise, by described terminal distribution to downlink transfer resource all distribute to descending logic channel corresponding to this descending GBR business;
Wherein, for first descending GBR business of described terminal, the current downlink transfer resource of described terminal is the downlink transfer resource being assigned to by resource allocation flow; For other descending GBR business, the current downlink transfer resource of described terminal has been remaining downlink transfer resource after the GBR of a upper descending GBR business ensures.
12. resource scheduling devices as described in claim 10 or 11, it is characterized in that, described scheduling of resource pretreatment module also comprises MBR transmit buffering unit, for according to the historical service traffics of descending logic channel corresponding to each descending GBR business of described terminal, show that each descending GBR business reaches the data volume that MBR restriction needs transmission.
13. resource scheduling devices as claimed in claim 12, is characterized in that, described scheduling of resource pretreatment module also comprises the BSR determining unit being connected with described MBR buffer cell,
Described BSR determining unit is used for, the MBR that reaches that calculates the descending logic channel of all descending GBR business of described terminal limits the summation that needs the data volume of transmitting, the descending total BSR current with described terminal compares, and gets the data volume that the smaller in the two is transmitted as the current needs of described terminal.
14. resource scheduling devices as claimed in claim 13, is characterized in that, described device also comprises scheduling of resource post-processing module, and described scheduling of resource post-processing module further comprises connected Delta computing unit and MBR limiting unit,
Described Delta computing unit is used for, and show that each descending GBR business meets the data volume that GBR needs transmit and reaches after the data volume that MBR restriction needs transmit, and calculates both differences;
Described MBR limiting unit is used for, after the GBR of all descending GBR business of described terminal has ensured, if the downlink transfer resource of described terminal also has residue, according to described difference, the descending logic channel of described terminal is carried out to following MBR restriction one by one: if the downlink transfer resource of described terminal residual is less than described difference, the transfer resource of distributing to first descending logic channel is that this descending GBR business meets the downlink transfer resource that data volume that GBR needs transmit adds the above terminal residual; Otherwise, the transfer resource of distributing to this descending logic channel is that this descending GBR business meets the data volume that GBR needs transmit and adds the above difference, and the downlink transfer resource of described terminal residual is deducted to described difference, carry out the MBR restriction of next descending GBR business.
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| CN105307277B (en) * | 2014-06-27 | 2019-01-18 | 普天信息技术有限公司 | Scheduling data volume determines method and system |
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