CN103391582A - Combined dispatching method and device based on buffering state - Google Patents
Combined dispatching method and device based on buffering state Download PDFInfo
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Abstract
The invention provides a combined dispatching method and device based on the buffering state to improve the resource utilization rate and to reduce the complexity of a signal carrier polymerization system. The method comprises the following steps that one service flow dispatching module is used for distributing service flow for buffering units corresponding to member signal carriers, wherein the service flow dispatching module is shared by all users, and the number of the member signal carriers is equal to the number of the buffering units; resource block capacity dispatching modules corresponding to the member signal carriers dispatch resource blocks to bear the service flow distributed to the buffering units corresponding to the member signal carriers, wherein the number of the resource block capacity dispatching modules is equal to the number of the member signal carriers. By means of the combined dispatching method, the dispatching efficiency is improved, the dispatching expenditure is reduced, and the resource utilization rate is improved.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of combined scheduling method based on buffer status and device.
Background technology
Long Term Evolution (Long Term Evolution, LTE) system is supported the system bandwidth of maximum 20MHz at present, descending peak rate can reach approximately 300Mbit/s, and ITU-Advanced requires the maximum bandwidth of system to be not less than 40MHz take 1Gbit/s as design object simultaneously.In order to tackle ITU to the demand of the 4th third-generation mobile communication technology and the challenge of other standards tissue, third generation partner program (3rdGeneration Partnership Project, 3GPP) be organized in and formally started follow-up evolution items (LTE-Advance, LTE-A) in March, 2008.LTE-A has new demand at aspects such as frequency, bandwidth, peak rate and compatibility, wherein, the system bandwidth minimum that LTE-A system is supported is 20MHz, maximum bandwidth reaches 100MHz, the descending peak rate of supporting is 1Gbit/s, up peak rate is 500Mbit/s, and downstream spectrum efficiency is brought up to 30bit/s/Hz, and uplink spectrum efficiency is brought up to 15bit/s/Hz.Aspect power system capacity, LTE-A requires in every 5M bandwidth to support 200～300 parallel voip users.LTE-A is stricter to the control of time delay, and the time delay that key-course is transformed into connection status from idle condition, lower than 50ms, is transformed into the time delay of connection status lower than 10ms from resting state; Client layer in the time delay of Frequency Division Duplexing (FDD) (Frequency Division Duplexing, FDD) pattern less than 5ms, in the time delay of time division duplex (Time Division Duplexing, TDD) pattern less than 10ms.In addition, compare with the LTE system, LTE-A system has had very large enhancing aspect key technology, some new candidate technologies have been introduced, for example, carrier aggregation technology, enhancement mode multi-antenna technology, Wireless Network Coding technology and wireless network multiple-input and multiple-output (Multiple Input Multiple Output, MIMO) technology etc.
Evolution process from LTE to the LTE-Advanced system, more the demand of wide spectrum will become one of greatest factor that affects evolution.Current LTE-A system has 6 candidate's frequencies,, if consider existing spectrum allocation may mode and planning, is difficult to find whole section frequency band of enough carrying LTE-A system 100MHz bandwidth.Therefore, 3GPP has proposed use carrier aggregation (Carrier Aggregation, CA) technology and has solved the demand of LTE-A system to band resource.
According to the 3GPP standard, existing dispatching algorithm to the descending carrier polymerization mainly is divided into two large classes: independent scheduling (Independent Scheduling) and combined dispatching (Joint Scheduling).The characteristics of independent scheduling are that each member carrier (Component Carrier, CC) has a scheduler to be responsible for the physical resource scheduling of this CC, and a plurality of CC of subscriber equipment (User Equipment, UE) polymerization will be by a plurality of scheduler schedules.If having a packet scheduler is responsible for the data to be transmitted bag is mapped on relevant CC, just can independently dispatch between each scheduler so, otherwise each scheduler shares a Subscriber Queue, needs to adopt distributed control to decide which packet to transmit on the CC at its place.The characteristics of combined dispatching are that a plurality of CC share a scheduler, and scheduler carries out centralized management to all users' formation and resource, and this centralized management can better utilize multi-user diversity gain and frequency selectivity gain.
Above-mentioned two kinds of dispatching algorithms all relate to two scheduler objects: service traffics and power system capacity.The basic goal of scheduling is to allow service traffics better be served by system, or allows power system capacity carry more service traffics with high quality-of-service more.In other words, how allowing the coupling that obtains a best between service traffics and power system capacity, be the target that scheduling is pursued, and above-mentioned two kinds of dispatching algorithms all can cause the deficiency of other side when pursuing this target.For example, independent dispatching algorithm has simple characteristics, and resource utilization is not high, although combined dispatching algorithm resource utilization is high, but has increased system complexity, also has the problem of feasibility.
Summary of the invention
A kind of combined scheduling method based on buffer status of the embodiment of the present invention and device, to improve the complexity of resource utilization and reduction carrier aggregation system.
The embodiment of the present invention provides a kind of combined scheduling method based on buffer status, described method comprises: adopting a service traffics scheduler module is buffer cell distribution service flow corresponding to each member carrier, described service traffics scheduler module is shared for all users, and the number of described member carrier equates with the number of described buffer cell; The service traffics that the resource block capacity scheduler module scheduling resource block corresponding with described each member carrier distributes to carry buffer cell corresponding to described each member carrier, the number of described resource block capacity scheduler module equates with the number of described member carrier.
Alternatively, service traffics scheduler module of described employing is for comprising before buffer cell distribution service flow corresponding to each member carrier: the buffer cell that described correspondence is set for described each member carrier; State to buffer cell corresponding to described each member carrier carries out initialization.
Alternatively, service traffics scheduler module of described employing is for comprising before buffer cell distribution service flow corresponding to each member carrier: be the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics.
Alternatively, service traffics scheduler module of described employing comprises for buffer cell distribution service flow corresponding to each member carrier: be retrieved as after the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics in a period of time remaining service traffics in described buffer cell; According to remaining service traffics in described buffer cell, the buffer cell corresponding for each member carrier upgrades service traffics.
Alternatively, described according to remaining service traffics in described buffer cell, for upgrading service traffics, buffer cell corresponding to each member carrier comprise: if in described buffer cell, remaining service traffics are relatively many, be that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, otherwise the buffer cell relatively less for remaining service traffics distributes relatively less service traffics.
Alternatively, resource block capacity scheduler module scheduling resource block corresponding to described and described each member carrier comprises with the service traffics of carrying buffer cell corresponding to described each member carrier and distributing: with resource block capacity scheduler module corresponding to described each member carrier according to one or combination in any in channel quality information, terminal transmitted power, interference coordination restriction and service quality, the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier.
The embodiment of the present invention provides a kind of device of combined dispatching based on buffer status, and described device comprises that described device comprises a service traffics scheduler module and at least one resource block capacity scheduler module; Described service traffics scheduler module, be used to buffer cell distribution service flow corresponding to each member carrier, and described service traffics scheduler module is shared for all users, and the number of described member carrier equates with the number of described buffer cell; Described resource block capacity scheduler module, be used for the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier, each described resource block capacity scheduler module is corresponding with described each member carrier, and the number of described resource block capacity scheduler module equates with the number of described member carrier.
Alternatively, described device also comprises: module is set, is used to described each member carrier that the buffer cell of described correspondence is set; The first initialization module, be used for the state of buffer cell corresponding to described each member carrier is carried out initialization.
Alternatively, described device also comprises: the second initialization module is used to the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics.
Alternatively, described service traffics scheduler module comprises: the surplus acquiring unit, for the remaining service traffics of described buffer cell in a period of time after the service traffics that are retrieved as the described user of buffer cell mean allocation corresponding to described each member carrier and described user; The capacity updating block, be used for service traffics remaining according to described buffer cell, and the buffer cell corresponding for each member carrier upgrades service traffics.
Alternatively, described capacity updating block specifically is used for: if the remaining service traffics of described buffer cell are relatively many, be that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, otherwise the buffer cell relatively less for remaining service traffics distributes relatively less service traffics.
Alternatively, described resource block capacity scheduler module specifically is used for or combination in any according to channel quality information, terminal transmitted power, interference coordination restriction and service quality, the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier.
From the invention described above embodiment as can be known, due to one side, adopt the unification of service traffics scheduler module to dispatch service traffics, on the other hand, adopt the resource block capacity scheduler module corresponding with described each member carrier respectively scheduling resource block to carry the service traffics of buffer cell distribution corresponding to described each member carrier.With realize comparing in existing independent dispatching algorithm or combined dispatching algorithm together with the scheduling of the scheduling of service traffics and Resource Block, the method that the embodiment of the present invention provides will realize separating with the scheduling to Resource Block to the scheduling of service traffics, therefore, the method that the embodiment of the present invention provides had both improved dispatching efficiency, reduce scheduling overhead, improved again resource utilization.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below will the accompanying drawing of required use in prior art or embodiment description be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, can also obtain as these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of the combined scheduling method based on buffer status that the embodiment of the present invention provides;
Fig. 2 is the schematic diagram of the combined scheduling method based on buffer status that another embodiment of the present invention provides;
Fig. 3 is the apparatus structure of the combined dispatching based on the buffer status schematic diagram that the embodiment of the present invention provides;
Fig. 4 is the apparatus structure of the combined dispatching based on the buffer status schematic diagram that another embodiment of the present invention provides;
Fig. 5 is the apparatus structure of the combined dispatching based on the buffer status schematic diagram that another embodiment of the present invention provides;
Fig. 6 is the apparatus structure of the combined dispatching based on the buffer status schematic diagram that another embodiment of the present invention provides;
Fig. 7 is the apparatus structure of the combined dispatching based on the buffer status schematic diagram that another embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those skilled in the art obtain, belong to the scope of protection of the invention.
Seeing also accompanying drawing 1, is the schematic flow sheet of the combined scheduling method based on buffer status that the embodiment of the present invention provides, and mainly comprises step S101 and step S102:
S101, adopting a service traffics scheduler module is buffer cell distribution service flow corresponding to each member carrier.
In embodiments of the present invention, each member carrier is corresponding with each buffer cell (Buffer), and the number of member carrier equates with the number of described buffer cell, and the service traffics scheduler module only has one, all users that are carrier aggregation system share a service traffics scheduler module, this service traffics scheduler module reception carrier paradigmatic system user's packet, for buffer cell distribution service flow corresponding to each member carrier, it is similar that in this and combined dispatching algorithm, a plurality of member carriers share a scheduler.Therefore, the method that the embodiment of the present invention provides takes full advantage of the advantage of combined dispatching algorithm, can realize the comprehensive utilization of the system resource capacity between member carrier, can improve resource utilization.
Before being buffer cell distribution service flow corresponding to each member carrier, for described each member carrier arranges corresponding buffer cell, buffer cell is used for temporarily storing the packet of user in carrier aggregation system.When the state of buffer cell corresponding to each member carrier is carried out initialization, can be that the initial condition of buffer cell is made as 0.
In embodiments of the present invention, at the beginning of the packet of service traffics scheduler module dispatched users, the buffer cell that each member carrier is corresponding is indistinguishably treated, namely, before being buffer cell distribution service flow corresponding to each member carrier, be the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics.
S102, the service traffics that the resource block capacity scheduler module scheduling resource block corresponding with described each member carrier distributes to carry buffer cell corresponding to described each member carrier.
In embodiments of the present invention, except the service traffics scheduler module, carrier aggregation system also has resource block capacity scheduler module corresponding to some and described each member carrier, and its number equates with the number of member carrier.The service traffics that each resource block capacity scheduler module scheduling resource block distributes to carry buffer cell corresponding to described each member carrier, the class of algorithms of this point and independent scheduling seemingly, therefore, the method that provides of the embodiment of the present invention has kept the simple feature of carrier aggregation system.
From above-mentioned steps S101 and step S102 as can be known, the state of the buffer cell that the service traffics scheduler module only need to be corresponding according to each member carrier carries out the distribution of service traffics, and does not pay close attention to Resource Block.In fact, Resource Block is to be in charge of by the resource block capacity scheduler module corresponding with described each member carrier, therefore, has realized the scheduling of service traffics is separated with the scheduling to Resource Block.
The resource block capacity scheduler module corresponding with each member carrier can be according to channel quality information (Channel Quality Information, CQI), terminal transmitted power, interference coordination restriction and service quality (Quality of Service, QoS) etc. one or combination in any, the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier.
The combined scheduling method based on buffer status that provides from the invention described above embodiment as can be known, due to one side, adopt the unification of service traffics scheduler module to dispatch service traffics, on the other hand, adopt the resource block capacity scheduler module corresponding with described each member carrier respectively scheduling resource block to carry the service traffics of buffer cell distribution corresponding to described each member carrier.With realize comparing in existing independent dispatching algorithm or combined dispatching algorithm together with the scheduling of the scheduling of service traffics and Resource Block, the method that the embodiment of the present invention provides will realize separating with the scheduling to Resource Block to the scheduling of service traffics, therefore, the method that the embodiment of the present invention provides had both improved dispatching efficiency, reduce scheduling overhead, improved again resource utilization.
, as one embodiment of the invention, adopt a service traffics scheduler module for buffer cell distribution service flow corresponding to each member carrier can be: to be retrieved as after the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics in a period of time remaining service traffics in described buffer cell; According to remaining service traffics in described buffer cell, the buffer cell corresponding for each member carrier upgrades service traffics.
For example, can be after the time span (for example, 1 millisecond) of a buffer cell, the service traffics scheduler module is obtained remaining service traffics in each buffer cell.In buffer cell, remaining service traffics are that the service traffics scheduler module is distributed certain service traffics for this buffer cell, resource block capacity scheduler module scheduling resource block, after carrying described certain service traffics of this buffer cell distribution, the service traffics that this buffer cell is remaining.What of remaining service traffics in buffer cell, the height that has reflected the Resource Block utilance on the member carrier corresponding with this buffer cell, namely,, if in a certain buffer cell, the surplus lines flow is more, represent that the Resource Block utilance on the member carrier corresponding with this buffer cell is lower; If in a certain buffer cell, the service traffics basic handling is complete, that is, in buffer cell, the surplus lines flow is less, represents that the Resource Block utilance on the member carrier corresponding with this buffer cell is higher.
for the service traffics that guarantee the user are impartial on each member carrier, according to remaining service traffics in buffer cell, during for buffer cell distribution service flow corresponding to each member carrier, can carry out according to this principle, namely, if in buffer cell, remaining service traffics are relatively many, be that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, if in buffer cell, remaining service traffics are relatively less, be that the relatively many buffer cells of described remaining service traffics distribute relatively less service traffics.Particularly, according to following formula (1)
The buffer cell corresponding for each member carrier upgrades service traffics, wherein, and B
iRepresent the assignment of traffic that i buffer cell will be updated,
Represent remaining service traffics in i buffer cell, R
BThe degree of depth that represents this i buffer cell, that is, the size of i buffer cell, Δ R represents the base unit of more newly assigned service traffics, 0＜Δ R＜R
B.Δ R has new assignment of traffic greater than 0 expression at every turn, until all service traffics Δ R=0 while being disposed; Δ R is less than R
BRepresent that when each assignment of traffic is upgraded be not that each buffer cell is filled, but according to the service traffics actual treatment situation in each buffer cell, namely, if in buffer cell, remaining service traffics are relatively many, be that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics,, if in buffer cell, remaining service traffics are relatively less, be that the relatively less buffer cell of described remaining service traffics distributes relatively less service traffics.
The state of buffer cell, that is, in buffer cell, remaining service traffics are both relevant to the Resource Block utilance on member carrier corresponding to this buffer cell, also with system in the situation that takies of other member carrier realized to a certain degree naturally related.Because the buffer cell of a member carrier is in full state (being the amount of capacity that in buffer cell, remaining service traffics equal this buffer cell), represent the Resource Block utilance existing problems on this member carrier, naturally need to consider to utilize other member carrier to carry out the bearer service flow.Therefore, smart allocation and the renewal on member carrier by user and service traffics thereof, need not the information interaction between member carrier, just can reach the purpose of the comprehensive utilization of resources of combined dispatching.
accompanying drawing 2 is schematic diagrames of the combined scheduling method based on buffer status that another embodiment of the present invention provides, in Fig. 2, (user 1 for the user of N carrier aggregation system, the user 2, user N) packet is dispatched by the service traffics scheduler module, be assigned to and M member carrier (member carrier 1, member carrier 2, member carrier M) M corresponding buffer cell (buffer cell 1, buffer cell 2, buffer cell M), with M M resource block capacity scheduler module (the resource block capacity scheduler module 1 that member carrier is corresponding, resource block capacity scheduler module 2, resource block capacity scheduler module M) difference scheduling resource block, carry the service traffics that M buffer cell corresponding to a described M member carrier distributes.
Seeing also accompanying drawing 3, is the apparatus structure of the combined dispatching based on the buffer status schematic diagram that the embodiment of the present invention provides.For convenience of explanation, only show the part relevant to the embodiment of the present invention.Combined dispatching based on the buffer status device of accompanying drawing 3 examples comprises a service traffics scheduler module 301 and at least one resource block capacity scheduler module 302, wherein:
Service traffics scheduler module 301, be used to buffer cell distribution service flow corresponding to each member carrier, and described service traffics scheduler module is shared for all users, and the number of described member carrier equates with the number of described buffer cell;
Resource block capacity scheduler module 302, be used for the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier, each described resource block capacity scheduler module is corresponding with described each member carrier, and the number of described resource block capacity scheduler module equates with the number of described member carrier.
Need to prove, in the execution mode of the above device of combined dispatching based on buffer status, the division of each functional module only illustrates, can be as required in practical application, for example the facility of the realization of the configuration requirement of corresponding hardware or software is considered, completed by different functional modules and above-mentioned functions is distributed, the internal structure that is about to the described device of combined dispatching based on buffer status is divided into different functional modules, to complete all or part of function described above.And, in practical application, corresponding functional module in the present embodiment can be to be realized by corresponding hardware, also can be completed by the corresponding software of corresponding hardware implement, for example, aforesaid service traffics scheduler module, can be to have to carry out aforementioned hardware for buffer cell distribution service flow corresponding to each member carrier, service traffics scheduler for example, thus can be also can carry out the corresponding computer program to complete general processor or other hardware devices of aforementioned functional; Aforesaid resource block capacity scheduler module for another example, can be to have to carry out the hardware of aforementioned scheduling resource block with the service traffics function of carrying buffer cell corresponding to described each member carrier and distributing, resource block capacity scheduler for example, thus can be also can carry out the corresponding computer program to complete general processor or other hardware devices (each embodiment that this specification provides can apply the foregoing description principle) of aforementioned functional.
in the device of the combined dispatching based on buffer status of accompanying drawing 3 examples, each member carrier is corresponding with each buffer cell (Buffer), and the number of member carrier equates with the number of described buffer cell, and service traffics scheduler module 301 only has one, all users that are carrier aggregation system share a service traffics scheduler module, this service traffics scheduler module 301 reception carrier paradigmatic system users' packet, for buffer cell distribution service flow corresponding to each member carrier, it is similar that in this and combined dispatching algorithm, a plurality of member carriers share a scheduler.Therefore, the device of the combined dispatching based on buffer status of accompanying drawing 3 examples takes full advantage of the advantage of combined dispatching algorithm, can realize the comprehensive utilization of the system resource capacity between member carrier, can improve resource utilization.
Except service traffics scheduler module 301, carrier aggregation system also has resource block capacity scheduler module 302 corresponding to some and described each member carrier, and its number equates with the number of member carrier.The service traffics that each resource block capacity scheduler module 302 scheduling resource block distributes to carry buffer cell corresponding to described each member carrier, the class of algorithms of this point and independent scheduling seemingly, therefore, the device of the combined dispatching based on buffer status of accompanying drawing 3 examples has kept the simple feature of carrier aggregation system.
From the device of the combined dispatching based on buffer status of above-mentioned accompanying drawing 3 examples as can be known, the state of the buffer cell that 301 of service traffics scheduler modules need to be corresponding according to each member carrier carries out the distribution of service traffics, and does not pay close attention to Resource Block.In fact, Resource Block is to be in charge of by the resource block capacity scheduler module 302 corresponding with described each member carrier, therefore, has realized the scheduling of service traffics is separated with the scheduling to Resource Block.
The resource block capacity scheduler module 302 corresponding with each member carrier can be according to channel quality information (Channel Quality Information, CQI), terminal transmitted power, interference coordination restriction and service quality (Quality of Service, QoS) etc. one or combination in any, the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier.
From the device of the combined dispatching based on buffer status of above-mentioned accompanying drawing 3 examples as can be known, due to one side, adopt the unification of service traffics scheduler module to dispatch service traffics, on the other hand, adopt the resource block capacity scheduler module corresponding with described each member carrier respectively scheduling resource block to carry the service traffics of buffer cell distribution corresponding to described each member carrier.With realize comparing in existing independent dispatching algorithm or combined dispatching algorithm together with the scheduling of the scheduling of service traffics and Resource Block, combined dispatching based on the buffer status device of accompanying drawing 3 examples will have been realized separating with the scheduling to Resource Block to the scheduling of service traffics, therefore, combined dispatching based on the buffer status device of accompanying drawing 3 examples had both improved dispatching efficiency, reduce scheduling overhead, improved again resource utilization.
Combined dispatching based on the buffer status device of accompanying drawing 3 examples may further include module 401 and the first initialization module 402 are set, the device of the combined dispatching based on buffer status that provides of another embodiment of the present invention as shown in Figure 4, wherein:
The first initialization module 402, be used for the state of buffer cell corresponding to described each member carrier is carried out initialization.Particularly, when the state of buffer cell corresponding to each member carrier is carried out initialization, can be that the initial condition of buffer cell is made as 0.
Combined dispatching based on the buffer status device of accompanying drawing 3 examples also may further include the second initialization module 501, the device of the combined dispatching based on buffer status that provides of another embodiment of the present invention as shown in Figure 5, the second initialization module 501 is used to the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics.
As one embodiment of the invention, the resource block capacity scheduler module 302 of accompanying drawing 5 examples may further include surplus acquiring unit 601 and capacity updating block 602, the device of the combined dispatching based on buffer status that provides of another embodiment of the present invention as shown in Figure 6, wherein:
Surplus acquiring unit 601, for the remaining service traffics of described buffer cell in a period of time after the service traffics that are retrieved as the described user of buffer cell mean allocation corresponding to described each member carrier and described user.For example, can be after the time span (for example, 1 millisecond) of a buffer cell, surplus acquiring unit 601 obtains remaining service traffics in each buffer cell.In buffer cell, remaining service traffics are that service traffics scheduler module 301 is distributed certain service traffics for this buffer cell, resource block capacity scheduler module 302 scheduling resource blocks, after carrying described certain service traffics of this buffer cell distribution, the service traffics that this buffer cell is remaining.What of remaining service traffics in buffer cell, the height that has reflected the Resource Block utilance on the member carrier corresponding with this buffer cell, namely,, if in a certain buffer cell, the surplus lines flow is more, represent that the Resource Block utilance on the member carrier corresponding with this buffer cell is lower; If in a certain buffer cell, the service traffics basic handling is complete, that is, in buffer cell, the surplus lines flow is less, represents that the Resource Block utilance on the member carrier corresponding with this buffer cell is higher.
Capacity updating block 602, be used for service traffics remaining according to described buffer cell, and the buffer cell corresponding for each member carrier upgrades service traffics.for the service traffics that guarantee the user are impartial on each member carrier, capacity updating block 602 is according to remaining service traffics in buffer cell, during for buffer cell distribution service flow corresponding to each member carrier, can carry out according to this principle, namely, if in described buffer cell, remaining service traffics are relatively many, capacity updating block 602 is that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, otherwise, capacity updating block 602 is that the relatively less buffer cell of remaining service traffics distributes relatively less service traffics.
Particularly, capacity updating block 602 is according to following formula (1)
The buffer cell corresponding for each member carrier upgrades service traffics, wherein, and B
iRepresent the assignment of traffic that i buffer cell will be updated,
Represent remaining service traffics in i buffer cell, R
BThe degree of depth that represents this i buffer cell, that is, the size of i buffer cell, Δ R represents the base unit of more newly assigned service traffics, 0＜Δ R＜R
B.Δ R has new assignment of traffic greater than 0 expression at every turn, until all service traffics Δ R=0 while being disposed; Δ R is less than R
BRepresent that when each assignment of traffic is upgraded be not that each buffer cell is filled, but according to the service traffics actual treatment situation in each buffer cell, namely, if in buffer cell, remaining service traffics are relatively many, capacity updating block 602 is that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, if in buffer cell, remaining service traffics are relatively less, capacity updating block 602 is that the relatively less buffer cell of described remaining service traffics distributes relatively less service traffics.
The state of buffer cell, that is, in buffer cell, remaining service traffics are both relevant to the Resource Block utilance on member carrier corresponding to this buffer cell, also with system in the situation that takies of other member carrier realized to a certain degree naturally related.Because the buffer cell of a member carrier is in full state (being the amount of capacity that in buffer cell, remaining service traffics equal this buffer cell), represent the Resource Block utilance existing problems on this member carrier, naturally need to consider to utilize other member carrier to carry out the bearer service flow.Therefore, smart allocation and the renewal on member carrier by user and service traffics thereof, need not the information interaction between member carrier, just can reach the purpose of the comprehensive utilization of resources of combined dispatching.
Accompanying drawing 7 is the apparatus structure of the combined dispatching based on buffer status schematic diagrames that another embodiment of the present invention provides, it comprises service traffics scheduler module 701 that an accompanying drawing 3 provides to any embodiment of accompanying drawing 6, with M(M more than or equal to 1) M buffer cell 702(buffer cell 1 that individual member carrier is corresponding, buffer cell 2 ..., buffer cell M) and M the resource block capacity scheduler module 703 corresponding with a described M buffer cell 702.In combined dispatching based on the buffer status device of accompanying drawing 7 examples, the user of N carrier aggregation system (user 1, user 2 ..., user N) packet by service traffics scheduler module 701 scheduling, be assigned to and M M the buffer cell 702 that member carrier is corresponding,, with M M the resource block capacity scheduler module 703 difference scheduling resource blocks that member carrier is corresponding, carry the service traffics that M buffer cell corresponding to a described M member carrier 702 distributes.The function of service traffics scheduler module 701 and resource block capacity scheduler module 703 is specifically consulted aforementioned figures 3 to any embodiment of accompanying drawing 6, does not do and repeats.
Need to prove, the contents such as the information interaction between each module/unit of said apparatus, implementation, due to the inventive method embodiment based on same design, its technique effect that brings is identical with the inventive method embodiment, particular content can, referring to the narration in the inventive method embodiment, repeat no more herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction complete by program, such as following the whole bag of tricks one or more or all:
Adopting a service traffics scheduler module is buffer cell distribution service flow corresponding to each member carrier, and described service traffics scheduler module is shared for all users, and the number of described member carrier equates with the number of described buffer cell;
The service traffics that the resource block capacity scheduler module scheduling resource block corresponding with described each member carrier distributes to carry buffer cell corresponding to described each member carrier, the number of described resource block capacity scheduler module equates with the number of described member carrier.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction complete by program, this program can be stored in a computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
Above a kind of combined scheduling method based on buffer status and the device that the embodiment of the present invention is provided is described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously,, for one of ordinary skill in the art,, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. the combined scheduling method based on buffer status, is characterized in that, described method comprises:
Adopting a service traffics scheduler module is buffer cell distribution service flow corresponding to each member carrier, and described service traffics scheduler module is shared for all users, and the number of described member carrier equates with the number of described buffer cell;
The service traffics that the resource block capacity scheduler module scheduling resource block corresponding with described each member carrier distributes to carry buffer cell corresponding to described each member carrier, the number of described resource block capacity scheduler module equates with the number of described member carrier.
2. the method for claim 1, is characterized in that, service traffics scheduler module of described employing is for comprising before buffer cell distribution service flow corresponding to each member carrier:
The buffer cell of described correspondence is set for described each member carrier;
State to buffer cell corresponding to described each member carrier carries out initialization.
3. the method for claim 1, is characterized in that, service traffics scheduler module of described employing is for comprising before buffer cell distribution service flow corresponding to each member carrier:
For the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics.
4. method as claimed in claim 3, is characterized in that, service traffics scheduler module of described employing comprises for buffer cell distribution service flow corresponding to each member carrier:
Be retrieved as after the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics in a period of time remaining service traffics in described buffer cell;
According to remaining service traffics in described buffer cell, the buffer cell corresponding for each member carrier upgrades service traffics.
5. method as claimed in claim 4, is characterized in that, and is described according to remaining service traffics in described buffer cell, for buffer cell corresponding to each member carrier upgrades service traffics, comprises:
If in described buffer cell, remaining service traffics are relatively many, be that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, otherwise the buffer cell relatively less for remaining service traffics distributes relatively less service traffics.
6. method as described in claim 1 to 5 any one, is characterized in that, the resource block capacity scheduler module scheduling resource block that described and described each member carrier is corresponding comprises with the service traffics of carrying buffer cell distribution corresponding to described each member carrier:
The resource block capacity scheduler module corresponding with described each member carrier is according to one or combination in any in channel quality information, terminal transmitted power, interference coordination restriction and service quality, the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier.
7. the device of the combined dispatching based on buffer status, is characterized in that, described device comprises a service traffics scheduler module and at least one resource block capacity scheduler module;
Described service traffics scheduler module, be used to buffer cell distribution service flow corresponding to each member carrier, and described service traffics scheduler module is shared for all users, and the number of described member carrier equates with the number of described buffer cell;
Described resource block capacity scheduler module, be used for the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier, each described resource block capacity scheduler module is corresponding with described each member carrier, and the number of described resource block capacity scheduler module equates with the number of described member carrier.
8. device as claimed in claim 7, is characterized in that, described device also comprises:
Module is set, is used to described each member carrier that the buffer cell of described correspondence is set;
The first initialization module, be used for the state of buffer cell corresponding to described each member carrier is carried out initialization.
9. device as claimed in claim 7, is characterized in that, described device also comprises:
The second initialization module, be used to the described user of buffer cell mean allocation corresponding to described each member carrier and described user's service traffics.
10. device as claimed in claim 9, is characterized in that, described service traffics scheduler module comprises:
The surplus acquiring unit, for the remaining service traffics of described buffer cell in a period of time after the service traffics that are retrieved as the described user of buffer cell mean allocation corresponding to described each member carrier and described user;
The capacity updating block, be used for service traffics remaining according to described buffer cell, and the buffer cell corresponding for each member carrier upgrades service traffics.
11. device as claimed in claim 10, it is characterized in that, described capacity updating block specifically is used for: if the remaining service traffics of described buffer cell are relatively many, be that the relatively many buffer cells of described remaining service traffics distribute relatively many service traffics, otherwise the buffer cell relatively less for remaining service traffics distributes relatively less service traffics.
12. device as described in claim 7 to 11 any one, it is characterized in that, described resource block capacity scheduler module specifically is used for or combination in any according to channel quality information, terminal transmitted power, interference coordination restriction and service quality, the service traffics that scheduling resource block distributes to carry buffer cell corresponding to described each member carrier.
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