CN105517046A - MBMS scheduling method and apparatus - Google Patents
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- CN105517046A CN105517046A CN201510830669.8A CN201510830669A CN105517046A CN 105517046 A CN105517046 A CN 105517046A CN 201510830669 A CN201510830669 A CN 201510830669A CN 105517046 A CN105517046 A CN 105517046A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The embodiment of the invention discloses a multimedia broadcast multicast service (MBMS) scheduling method and apparatus, thereby realizing scheduling of the MBMS on the congestion condition. The method comprises: a network side sorts MBMSs according to scheduling measurement values corresponding to the MBMSs in a network congestion state, wherein the scheduling measurement values are used for representing scheduling emergency degrees; and the network side carries out scheduling on the MBMS with the highest scheduling measurement value. According to the embodiment of the invention, the scheduling measurement value is used for representing the scheduling emergency degree. In a network congestion state, the MBMS with the highest scheduling measurement value representing the highest scheduling emergency degree is scheduled firstly. Therefore, the MBMS needed to be scheduled most can be scheduled preferentially in the network congestion state.
Description
Technical field
The present invention relates to the communications field, particularly relate to MBMS dispatching method and device.
Background technology
MBMS (MultimediaBroadcastMulticastService, multimedia broadcast multi-broadcasting business) business is used for providing multimedia broadcasting and multicast service for the user in wireless area.In prior art, be adopt the mode pre-setting schedulable condition to dispatch MBMS, do not consider the Business Processing under congestion situation.
Summary of the invention
The object of the embodiment of the present invention is to provide MBMS dispatching method and device, to realize MBMS scheduling in case of congestion.
For achieving the above object, the invention provides following scheme:
A kind of MBMS dispatching method, comprising:
When network congestion, the scheduling metrics value that network side is corresponding according to MBMS sorts to MBMS; Described scheduling metrics value is for characterizing scheduling urgency level;
The MBMS that network side is the highest to scheduling metric is dispatched.
Preferably, MBMS described in each to should having levels of priority and seizing instruction, described in seize to be designated as to trigger and seize, can seize, should not trigger to seize and maybe can not seize; The described scheduling metrics value corresponding according to MBMS is carried out sequence to MBMS and is comprised: will seize to be designated as to trigger and to seize or preemptible MBMS is put into and seized process queue, and sort to the described MBMS seized in process queue from big to small according to scheduling metrics value; To seize to be designated as should not trigger and seize or not preemptible MBMS, and the MBMS that levels of priority is set to nothing puts into non-preemption process queue, and from big to small the MBMS in described non-preemption process queue is sorted according to scheduling metrics value.
Preferably, the described scheduling metrics value corresponding according to MBMS sorts to MBMS and also comprises: seize for described the MBMS that in process queue, scheduling metrics value is identical, can trigger before the MBMS seized comes by seizing to be designated as; For the MBMS that scheduling metrics value in non-preemption process queue is identical, sort from big to small according to the QoS metric value of MBMS, described QoS metric value is for characterizing the operation quality requirement of MBMS.
Preferably, the described MBMS the highest to scheduling metric is carried out scheduling and is comprised: when the described scheduling metrics value seizing the MBMS ranked the first in process queue is more than or equal to the scheduling metrics value of the MBMS ranked the first in described non-preemption process queue, seize for described the MBMS Resources allocation ranked the first in process queue; When the described scheduling metrics value seizing the MBMS ranked the first in process queue is less than the scheduling metrics value of the MBMS ranked the first in described non-preemption process queue, it is the MBMS Resources allocation ranked the first in described non-preemption process queue; The MBMS be scheduled is removed from the queue of place.
Preferably, the described MBMS the highest to scheduling metric is dispatched and is also comprised: generate the MSI information that the MBMS the highest with described scheduling metrics value is corresponding.
Preferably, the scheduling metrics value of MBMS calculates in the following way: the number of users ratio QoS metric value of MBMS being multiplied by described MBMS, obtain the scheduling metrics value that described MBMS is corresponding, wherein, the number of users ratio of described MBMS is: the number of users applying for described MBMS in all communities in multicast broadcast single frequency network region, the ratio of the total number of users of each MBMS of application in all communities accounting for described multicast broadcast single frequency network region.
Preferably, also comprise: when the number of users ratio of MBMS meets closedown condition, close described MBMS; Wherein, described closedown condition comprises: the number of users ratio of MBMS is less than or equal to the first threshold value, or the number of users ratio of MBMS is between the first threshold value and the second threshold value, further, instruction that what MBMS was corresponding seize is not set to trigger seizes; Described second threshold value is greater than described first threshold value.
A kind of MBMS dispatching device, comprising:
Sequencing unit, for when network congestion, the scheduling metrics value corresponding according to MBMS sorts to MBMS; Described scheduling metrics value is for characterizing scheduling urgency level;
Scheduling unit, dispatches for the MBMS the highest to scheduling metric.
Preferably, described scheduling metrics value is that the number of users ratio being multiplied by described MBMS by the QoS metric value of MBMS obtains, the number of users ratio of described MBMS is: the number of users applying for described MBMS in all communities in multicast broadcast single frequency network region, the ratio of the total number of users of each MBMS of application in all communities accounting for described multicast broadcast single frequency network region.
Preferably, also comprise: closing unit, for when the number of users ratio of MBMS meets closedown condition, close described MBMS; Wherein, described closedown condition comprises: the number of users ratio of MBMS is less than or equal to the first threshold value, or the number of users ratio of MBMS is between the first threshold value and the second threshold value, further, instruction that what MBMS was corresponding seize is not set to trigger seizes; Described second threshold value is greater than described first threshold value.
In embodiments of the present invention, scheduling urgency level is characterized with scheduling metrics value.When network congestion, what first dispatch is scheduling metrics value maximum (also namely dispatching the most urgent) MBMS.Like this, when ensure that network congestion, the MBMS needing most scheduling can by priority scheduling.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Relation schematic diagram between the MBMS region that Fig. 1 provides for the embodiment of the present invention and MBSFN region;
Fig. 2,3,4,6, the exemplary process diagram of the 7 MBMS dispatching methods provided for the embodiment of the present invention;
The allocation of radio resources figure that Fig. 5 provides for the embodiment of the present invention;
Fig. 8, the 9 MBMS dispatching device example arrangement schematic diagrames provided for the embodiment of the present invention.
Embodiment
In this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising above-mentioned key element and also there is other identical element.
Under Long Term Evolution (LTE) or System Architecture Evolution (SAE) network architecture, MBMS all there occurs change at the implementation framework of carrying aspect and mode, is called strengthens multimedia broadcasting or multicast service (eMBMS) in order to the MBMS before distinguishing carries realization.EMBMS also introduces single frequency network (SFN) transmission means in Access Network, i.e. the load mode of Multimedia Broadcast Multicast Service single frequency network (MBSFN), is exactly carry out synchronous transmission with same frequency in multiple community at one time.Use this transmission means to save frequency resource, improve the availability of frequency spectrum.This multiple sectors at same keeps pouring in defeated brought diversity and can solve the problems such as blind area covering simultaneously, strengthens the reliability received and improves coverage rate.
EMBMS is the product based on the comprehensive evolution of MBMS, and this evolution is embodied in the many aspects such as logical architecture, business model, transmission means and channel architecture.By this revolutionary evolution, make MBMS can adapt to higher business need, and there is stronger competitiveness.
For the purpose of quoting and know, the technical term hereinafter used, to write a Chinese character in simplified form or summary of abridging is explained as follows:
MBMS:MultimediaBroadcastMulticastService, multimedia broadcast multi-broadcasting business; MBMS is the multimedia broadcast multicast function defined in 3GPPR6, for providing multimedia broadcasting and multicast service for the user in wireless area;
E-MBMS:EvolvedMultimediaBroadcast/MulticastService, the multimedia broadcast multi-broadcasting business of enhancing;
GBR:GuaranteedBitRate ensures bit rate;
MBSFN:Multicast/BroadcastoverSingleFrequencyNetwork, multicast broadcast single frequency network;
MCE:Multi-cell/multicastCoordinationEntity, multiple cell/multicast coordination entity;
MCH:MulticastChannel, Multicast Channel;
ARP:AllocationandRetentionPriority, distributes and retains priority;
PMCH:PhysicalMulticastChannel, Physical Multicast Channel;
QoS:Quality-of-Service, quality of service;
MSI:MCHschedulinginformation, MCH schedule information;
ENB:eNodeB, base station;
MTCH:MulticastTrafficChannel, multicast transmission channel;
MSP:MCHschedulingperiod, MCH dispatching cycle;
BCCH:BroadcastControlChannel, Broadcast Control Channel;
SIB:SystemInformationBlock, system information block;
MBMSSession:MBMS session.Can be understood as one section of MBMS fragment continuous in time, on time dimension, it has the attribute such as time started and termination time, and a MBMS can only have at most a session in a moment point;
MBSFNSynchronizationArea:MBSFN retaining zone, refers to the region of having the ability to carry out MBSFN transmission, and all eNodeB in this region by synchronously, and can carry out MBSFN transmission;
MBSFNArea:MBSFN region.Refer to the one group of set of cells achieving MBSFN and transmit; Specifically, a MBSFN region comprises one or more by the community under evolution base station (eNB) control, is also appreciated that it is the least unit that eMBMS business transmits.In same MBSFN region, according to UE, MBSFN is transmitted to the different reception situation that may be in, be divided in region again transmission notice community, transmission community and retain community further.Wherein MBSFN retains the transmission that MBSFN is not carried out in community, causes interference to avoid MBSFN signal to non-MBSFN community;
MBMS region: MBMSServiceArea.Be a concept based on specific MBMSSession, refer to the geographic range that specific MBMSSession can send.The different Session of same MBMS can be corresponding different MBMSServiceArea.A MBMSServiceArea can comprise one or more MBSFNArea.Relation between MBMS region and MBSFN region can see Fig. 1.
MBSFN region must exceed the scope of MBSFN retaining zone.Can comprise multiple MBSFN region in a MBSFN retaining zone, and the specific cell of MBSFN retaining zone also can belong to multiple different MBSFN region.MBSFN retaining zone is generally realized by OAM (operation management maintain) configuration, and MBSFN region both by configuration, also can be realized by multiple cell/multicast coordination entity (MCE).A MBSFN region can have multiple MBMS to transmit simultaneously.
Multicast service scheduling has two kinds of modes, and one is static scheduling one is dynamic dispatching.
Static scheduling information and dynamic scheduling information all carry with MSI.
Static scheduling: MSI and MSP, just having fixed for during area configurations, specifies dispatching cycle and the subframe of each PMCH.Each MCH has fixing dispatching cycle (MSP), informs UE by the MSI (what now MSI carried is Static scheduling information) in MBSFNAreaConfiguration (MBSFN area configurations) message.Static scheduling information is configured by OAM, can not real-time update.
Dynamic dispatching: if there is dynamic scheduling information, then cover the Static scheduling information in MSI field.Dynamic scheduling information configures different from other, is to be configured by MAC layer, and other all configurations are all configured by RRC information.Dynamic scheduling information only sends in start most first subframe of each PMCH.The MBMS dynamic scheduling information that network side sets sends to UE, and UE, at the most initial position of certain dispatching cycle, receives the Scheduling Block of carrying MBMS dynamic scheduling information.On the Scheduling Block of the carrying dynamic scheduling information that UE receives on first multicast subframe of this dispatching cycle, the resource distribution situation of each MBMS concrete in this dispatching cycle can be known.Dynamic scheduling information generally changes according to the priority of MBMS.
Prior art adopts the mode pre-setting schedulable condition to dispatch MBMS, schedulable condition is: the uplink feedback receiving subscriber equipment (UE), and/or non-MBMS needs the Radio Resource number that takies, and/or from the request of operation management maintain (OAM) entity.
In the prior art, do not consider the QoS of business, only consider the On/Off of MBMS, the priority of MBMS scheduling, from the setting of OAM, according to network condition dynamic change, also can consider the Business Processing under congestion situation.
For this reason, the embodiment of the present invention provides MBMS dispatching method and device, to realize MBMS scheduling in case of congestion, and the real-time flexible dispatching of MBMS.
Above-mentioned MBMS dispatching method and device can be applicable in the traffic scheduling design of the E-MBMS of private network, can improve the reasonability of MBMS scheduling and ensure Consumer's Experience.
MBMS dispatching device for performing above-mentioned MBMS dispatching method specifically can be scheduling network element, MCE, OAM etc.
Fig. 2 shows a kind of exemplary flow of above-mentioned MBMS dispatching method, and it can comprise:
S1, when network congestion, the scheduling metrics value that network side is corresponding according to MBMS sorts to MBMS.
In other embodiments of the present invention, before step S1, above-mentioned dispatching method also can comprise the step that network side calculates the scheduling metrics value of MBMS.
It should be noted that, the embodiment of the present invention is mainly applicable to network congestion and the preferential situation of MBMS.And in network congestion and clean culture is preferential, can on the basis that meeting unicast is preferential, in conjunction with the method rational management MBMS that the embodiment of the present invention provides.In actual applications, the priority of clean culture and MBMS can be determined according to interestindication instruction.
The MBMS that S2, network side are the highest to scheduling metric is dispatched.
In embodiments of the present invention, scheduling urgency level is characterized with scheduling metrics value.For example, all MBMS in a MBSFN region comprise business 1, business 2, business 3, business 4, and wherein, the scheduling metrics value of business 4 is the highest, then represent that the scheduling urgency level of business 4 is the highest.Therefore, first can dispatch business 4.Like this, when ensure that network congestion, the MBMS needing most scheduling can by priority scheduling.
In addition, it should be noted that in actual applications, before network is not congested, the MBMS carrying that scheduling metrics value is low may take resource.Such as, aforementioned business 1, business 2 take resource.In the prior art, if the priority of business 1,2 is higher than business 4, then resource not or No Assets time, business 4 cannot obtain resource.
And in embodiments of the present invention, after network congestion, network side can the MBMS the highest to scheduling metric be dispatched.Because resource is distributed or No Assets not after network congestion, so, the MBMS the highest to scheduling metric is dispatched, and just means that the MBMS carrying that scheduling metrics value is low can be released, to ensure that the MBMS that scheduling metrics value is the highest has enough resources to use.Also namely, when dispatching business 4, by the resource of release business 1 and/or 2.
Certainly, the carrying of release can be re-established according to demand after network congestion is alleviated.Like this, network can be avoided congested further, and ensure Consumer's Experience.
In actual scene, scheduling network element or MCE can distribute ARP for each MBMS.Comprise levels of priority field in ARP and seize capable field.
Be provided with the levels of priority of this MBMS in levels of priority field, and seize seizing in capable field and be designated as one in " can trigger and seize ", " can seize ", " should not trigger and seize " and " can not seize " four.
Refer to Fig. 3, above-described embodiment step S1 (the scheduling metrics value corresponding according to MBMS sorts to MBMS), and instruction can be seized carry out in conjunction with the levels of priority in ARP.Such as, it can sort as follows:
S11, will seize to be designated as to trigger and to seize or preemptible MBMS is put into and seized process queue, and from big to small the above-mentioned MBMS seized in process queue be sorted according to scheduling metrics value.
S12, will seize to be designated as should not trigger and seize or not preemptible MBMS, and the MBMS that levels of priority is set to nothing puts into non-preemption process queue, and from big to small the MBMS in above-mentioned non-preemption process queue is sorted according to scheduling metrics value.
For example, ABCDE five MBMS are had in a MBSFN region, the ARP of business A seizes capable field and is set to " can trigger and seize ", the ARP of business B seizes capable field and is set to " can seize ", the ARP of business C seizes capable field and is set to " should not trigger and seize ", the ARP of business D seizes capable field and is set to " can not seize ", and the ARP levels of priority field of business E is set to " without priority ", then be put into by business A and business B and seize process queue, business C, D, E are put into non-preemption process queue.Then, then according to the size of scheduling metrics value, to the MBMS sequence in individual queue.
When specifically performing, can first by all seize to be designated as to trigger to seize or after preemptible MBMS puts into and seize process queue, then to sort from big to small according to scheduling metrics value; Also can a MBMS is put into seize process queue time, just by scheduling metrics value size, it is sorted.
In like manner, first all should triggering can be seized or after MBMS that preemptible MBMS and levels of priority are not set to nothing puts into non-preemption process queue, then sort from big to small according to scheduling metrics value; Also when a MBMS is put into non-preemption process queue, just can sort by scheduling metrics value size.
Step S11 and S12 can be execution arranged side by side, also can be that serial performs (when serial performs, the execution sequence of step S11 and S12 can be put upside down).The embodiment of the present invention does not limit its execution sequence.
Certainly, in sequencer procedure, also likely run into the situation that two or more MBMS scheduling metrics value is identical, then in other embodiments of the present invention, the above-mentioned scheduling metrics value corresponding according to MBMS sorts to MBMS also can comprise following details:
A: for seizing the MBMS that in process queue, scheduling metrics value is identical, can trigger before the MBMS seized comes by seizing to be designated as.
Still continue to use precedent, assuming that the scheduling metrics value seizing business A and business B in process queue is equal, because business A is " can trigger and seize ", business B is " can seize ", then come before business B by business A.
And for seize scheduling metrics value in process queue identical, seize the also identical MBMS of instruction, can sort from big to small according to QoS metric value.
B: for the MBMS that scheduling metrics value in non-preemption process queue is identical, sorts from big to small according to the QoS metric value of MBMS.
Above-mentioned QoS metric value is for characterizing the operation quality requirement of MBMS.How this paper is follow-up calculates QoS metric value by introduction.
Still continue to use precedent, assuming that the scheduling metrics value at business C, D in non-preemption process queue is equal, but the QoS metric value of business C is greater than the QoS metric value of business D, then come before business D by business C.
For the MBMS that in non-preemption process queue, scheduling metrics value is identical, QoS metric value is also identical, successively can sort according to the opening time.
Corresponding, still refer to Fig. 3, the step 2 (MBMS the highest to scheduling metric is dispatched) in above-mentioned all embodiments can comprise the steps:
S21, when the scheduling metrics value seizing the MBMS ranked the first in process queue is more than or equal to the scheduling metrics value of the MBMS ranked the first in non-preemption process queue, seize for above-mentioned the MBMS Resources allocation ranked the first in process queue.
S22, when the above-mentioned scheduling metrics value seizing the MBMS ranked the first in process queue is less than the scheduling metrics value of the MBMS ranked the first in above-mentioned non-preemption process queue, be the MBMS Resources allocation ranked the first in above-mentioned non-preemption process queue.
S23, the MBMS be scheduled to be removed from the queue of place.
Still continue to use precedent, assuming that seizing the MBMS ranked the first in process queue is business A, the MBMS ranked the first in non-preemption process queue is business C, and the scheduling metrics value of business A is greater than the scheduling metrics value of business C, being then business A Resources allocation, then business A being removed from seizing process queue.
After removing business A, seize the MBMS ranked the first in process queue and become business B, then the business C in business B and non-preemption process queue is compared, if the scheduling metrics value of business C is larger, be then business C Resources allocation, and remove business C, otherwise, for business B Resources allocation, and remove business B.By that analogy, until all MBMS have been scheduled (about step S2, more specifically flow process can see Fig. 4).
Again for example, assuming that carry four MBMS (MBMSservice) in MBSFN region, respectively: MBMSserviceA, MBMSserviceB, MBMSserviceC and MBMSserviceD.In order to simplify, suppose that these four MBMS have all been in and carrying out state, and the corresponding same MCH of these four business.As shown in Figure 5, the horizontal line shadow representation Scheduling Block of overstriking, the MBMS that other shadow representation is different, blank parts represents does not have data or filler in concrete Radio Resource carrying.Distribute corresponding resource to scheduling metrics value business from high to low according to scheduling metrics value, the business that scheduling metrics value is the highest is MBMSserviceB, is secondly MBMSserviceC and MBMSserviceA, and minimum business is MBMSserviceD.
After for each MBMS Resources allocation, network side needs to inform UE each MBMS institute Resources allocation.UE by know as under type interested MBMS the resource of distributing:
UE can obtain MBSFN region, the configuration of MCCH and the configuration of MBMS notification message by the system information block 13 (SIB13) of BCCH, know MCCH all in this community and its corresponding configuration information, MCCH and MBSFN region is one to one.UE just can know the control information in the MBSFN region corresponding with it by reading MCCH message, receive the MSI information in the MCH at interested MBMS place, obtain interested MBMS according to the instruction of MSI information, thus realize the accurate reception of MBMS.
Therefore, in other embodiments of the present invention, in above-mentioned all embodiments, " MBMS the highest to scheduling metric is dispatched " also can comprise:
Generate the MSI information that the MBMS the highest with scheduling metrics value is corresponding.
Also namely, after being assigned with resource for MBMS, by MSI information notification UE.
Say from another point of view, MSI information upgrades according to the scheduling metrics value of each MBMS calculated.
In embodiments of the present invention, time initial, an initial schedule metric can be set for each MBMS, the business of ARP corresponding to MBMS can be used to set up priority and dispatch as initial schedule metric.After scheduling a period of time, when MBMS state and user's request change, network side by calculating new scheduling metrics value, and upgrades MSI information corresponding to next dispatching cycle according to new scheduling metrics value.The scheduling that the embodiment of the present invention is carried out can be classified as dynamic dispatching.
And in the prior art, after scheduling a period of time, time MBMS state and user's request change, can not upgrade schedule information, this have impact on the scheduling of other business and the utilization of resource.By comparison, the scheduling scheme that the embodiment of the present invention provides, flexibility is higher, and real-time is better, and adaptivity, reasonability are also stronger.
The account form of scheduling metrics value will be introduced below.
The account form of scheduling metrics value can have multiple, such as, the QoS metric value of MBMS can be multiplied by the number of users ratio of this MBMS, obtain the scheduling metrics value that this MBMS is corresponding.
Again such as, directly by the number of users ratio of MBMS as scheduling metrics value corresponding to this MBMS.
Wherein, the computing formula carrying QoS metric value is as follows:
W
bear-QoS=e
traffic demand parameter+ e
time urgency parameter+ e
(9-QCI priority)+ incrementation parameter
Adopt the formula of exponential form, curve is ascendant trend exponentially, can embody the urgency rising because dispatch delay causes preferably.
Wherein, traffic demand parameter, serve GBR carrying, the upper limit is dlPDBClippingFactor (clippingfact represents descending PDB restriction factor), and in this programme, upper limit value is 5.PDB implication is PacketDelayBudget.
The urgent parameter of time delay, relevant with carrying QCI delay requirement, the upper limit is dlPDBClippingFactor (this programme value 5).
Incrementation parameter, relevant with signaling with common signal channel, make common signal channel and signaling bear priority higher." basic increment " is ε, value 1.
QoS metric value calculates, and has taken into account several respects factor: traffic demand, time delay are urgent, carrying QoS priority.Meanwhile, the upper limit is arranged to flow and delay parameter, and extra interpolation " increment " parameter, guarantee common signal channel, signaling bear have limit priority.
Or QoS metric value can directly use exp^ (9-QCI priority) to calculate.
And the number of users ratio of certain MBMS is specially: the number of users applying for this MBMS in all communities in MBSFN region, account for the ratio of the total number of users of applying for each MBMS in all communities in this MBSFN region.
For example, assuming that there are A, B, C tri-MBMS in a MBSFN region, and, this MBSFN You Sange community (cell
1-cell
3).Wherein: the number of users of application business A is 20 (at cell
1the number of users of interior application business A is 5, at cell
2the number of users of interior application business A is 0, at cell
3the number of users of interior application business A is 15); The number of users of business B is 50 (at cell
1the number of users of interior application business B is 25, at cell
2the number of users of interior application business B is 10, at cell
3the number of users of interior application business B is 15), the number of users of business C is 30 (at cell
1the number of users of interior application business C is 1, at cell
2the number of users of interior application business C is 9, at cell
3the number of users of interior application business C is 20).Then the number of users ratio of business A, B, C is respectively 20%, 50% and 30%.Be multiplied by respective QoS metric value again, namely obtain the scheduling metrics value that each MBMS is corresponding.
Obtain number of users ratio if want, need add up the number of users of each MBMS.The number of users counting process of existing MBMS can be adopted:
Counting flow process carries out initialization by network;
Counting process starts by sending a request to each eNB in relevant MBSFN region, the eNB receiving request sends Counting requests to UE by the MCCH message of expansion, wherein comprise TMGI (Temporarymobilegroupidentity, the interim mobile group represents) list needing UE to feed back;
To receive or the connection mode UE of the corresponding MBMS of reception interested sends RRC counting response message, comprising short MBMS mark (unique in MBSFN region) and optional MBSFN area identification (if being configured with overlapping region).UE is by the multiple MBMS of single counting response message report.If UE is receiving or the multiple MBMS of reception interested, then the number of users of each business can comprise this UE user;
Network side can carry out some by the RRC counting response message obtaining UE feedback and arrange adjustment or scheduling of resource, such as follow-up by the transmission of a certain MBMS of On/Off of introduction, and such as the aforementioned MBMS the highest to scheduling metric is dispatched.
In other embodiments of the present invention, refer to Fig. 6, above-mentioned dispatching method also can comprise the steps:
S601, when the number of users ratio of MBMS meets closedown condition, close this MBMS.
Wherein, closedown condition can comprise: the number of users ratio of above-mentioned MBMS is less than or equal to the first threshold value (threshold ones), or,
The number of users ratio of above-mentioned MBMS is between the first threshold value and the second threshold value (high threshold), and instruction that what above-mentioned MBMS was corresponding seize is not set to trigger seizes.
Above-mentioned second threshold value is greater than above-mentioned first threshold value.Further, the first threshold value can value be the 1%, second threshold value can value be 3%.
In other embodiments of the present invention, still refer to Fig. 6, above-mentioned dispatching method also can comprise the steps:
S602, when the number of users ratio of above-mentioned MBMS does not meet closedown condition, this MBMS is kept to open.
For example, MBMS B opens, is receiving and the number of users ratio of reception MBMS B interested is 7%, then keep MBMS B to open.
Again such as, to receive and the number of users ratio of reception MBMS C interested is 0.7%, then closing MBMS C.
Again such as, to receive and the number of users ratio of reception MBMS D interested is 2%, between 1% and 3%, but the instruction of seizing of MBMS D is not " can trigger and seize ", then close MBMS D.
Again such as, to receive and the number of users ratio of reception MBMS E interested is 2%, between 1% and 3%, and the instruction of seizing of MBMS E is " can trigger and seize ", then keep MBMS E to open.
Performing step in more detail about step S601 and step S602 can see Fig. 7.
In the present embodiment, number of users ratio is less than or equal to threshold ones, or user's ratio seizes indication field when not being set to " can trigger and seize " between high-low threshold, closes MBMS, discharges this part Radio Resource, to improve the utilance of resource; Other situation keeps MBMS to open, to the experience that user is good.
It should be noted that, step S601 and step S602, scheduling steps time congested with aforementioned network, there is no sequencing, relies on different triggerings separately.Step S601 and step S602 reaches certain condition according to MBMS number of users ratio and triggers execution, scheduling steps when aforementioned network is congested, mainly triggers execution because of network congestion.
, will introduce MBMS dispatching device below, this device specifically can be scheduling network element, MCE, OAM etc. of network side, or can be the newly-increased equipment for dispatching.
Refer to Fig. 8, MBMS dispatching device 800 can comprise:
Sequencing unit 1, for when network congestion, the scheduling metrics value corresponding according to MBMS sorts to MBMS; Wherein, scheduling metrics value is for characterizing scheduling urgency level.
Scheduling metrics value is that the number of users ratio being multiplied by above-mentioned MBMS by the QoS metric value of MBMS obtains, the number of users ratio of above-mentioned MBMS is: the number of users applying for above-mentioned MBMS in all communities in multicast broadcast single frequency network region, accounts for the ratio of the total number of users of applying for each MBMS in all communities in above-mentioned multicast broadcast single frequency network region.
Scheduling metrics value related introduction refers to foregoing description herein, and therefore not to repeat here.
Scheduling unit 2, dispatches for the MBMS the highest to scheduling metric.
In other embodiments of the present invention, the scheduling metrics value corresponding according to MBMS MBMS is sorted in, above-mentioned sequencing unit 1 specifically can be used for:
To seize to be designated as to trigger and to seize or preemptible MBMS is put into and seized process queue, and from big to small the described MBMS seized in process queue be sorted according to scheduling metrics value;
To seize to be designated as should not trigger and seize or not preemptible MBMS, and the MBMS that levels of priority is set to nothing puts into non-preemption process queue, and from big to small the MBMS in described non-preemption process queue is sorted according to scheduling metrics value.
Particular content can see aforesaid record herein, and therefore not to repeat here.
In other embodiments of the present invention, the scheduling metrics value corresponding according to MBMS MBMS is sorted in, above-mentioned sequencing unit 1 also can be used for:
For seizing the MBMS that in process queue, scheduling metrics value is identical, can trigger before the MBMS seized comes by seizing to be designated as;
For the MBMS that scheduling metrics value in non-preemption process queue is identical, sort from big to small according to the QoS metric value of MBMS.
Related introduction about scheduling metrics value, QoS metric value refers to foregoing description herein, and therefore not to repeat here.
In other embodiments of the present invention, in dispatching the highest MBMS of scheduling metric, scheduling unit 2 can be used for:
When the scheduling metrics value seizing the MBMS ranked the first in process queue is more than or equal to the scheduling metrics value of the MBMS ranked the first in non-preemption process queue, for seizing the MBMS Resources allocation ranked the first in process queue;
When the scheduling metrics value seizing the MBMS ranked the first in process queue is less than the scheduling metrics value of the MBMS ranked the first in non-preemption process queue, it is the MBMS Resources allocation ranked the first in non-preemption process queue;
The MBMS be scheduled is removed from the queue of place.
Particular content can see aforesaid record herein, and therefore not to repeat here.
In other embodiments of the present invention, in dispatching the highest MBMS of scheduling metric, scheduling unit 2 also can be used for:
Generate the MSI information that the MBMS the highest with scheduling metrics value is corresponding.
Particular content can see aforesaid record herein, and therefore not to repeat here.
In other embodiments of the present invention, refer to Fig. 9, above-mentioned MBMS dispatching device 800 also can comprise:
Closing unit 3, for when the number of users ratio of MBMS meets closedown condition, closes this MBMS;
Wherein, above-mentioned closedown condition comprises: the number of users ratio of MBMS is less than or equal to the first threshold value, or,
The number of users ratio of MBMS is between the first threshold value and the second threshold value, and instruction that what this MBMS was corresponding seize is not set to trigger seizes;
Above-mentioned second threshold value is greater than above-mentioned first threshold value.
In other embodiments of the present invention, above-mentioned closing unit 3 also can be used for: when the number of users ratio of MBMS does not meet closedown condition, keeps this MBMS to open.
Particular content refers to foregoing description herein, and therefore not to repeat here.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For system disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.To sum up above-mentioned, this description should not be construed as limitation of the present invention.
Claims (10)
1. a MBMS dispatching method, is characterized in that, comprising:
When network congestion, the scheduling metrics value that network side is corresponding according to MBMS sorts to MBMS; Described scheduling metrics value is for characterizing scheduling urgency level;
The MBMS that network side is the highest to scheduling metric is dispatched.
2. the method for claim 1, is characterized in that,
MBMS described in each to should having levels of priority and seizing instruction, described in seize to be designated as to trigger and seize, can seize, should not trigger to seize and maybe can not seize;
The described scheduling metrics value corresponding according to MBMS is carried out sequence to MBMS and is comprised:
To seize to be designated as to trigger and to seize or preemptible MBMS is put into and seized process queue, and from big to small the described MBMS seized in process queue be sorted according to scheduling metrics value;
To seize to be designated as should not trigger and seize or not preemptible MBMS, and the MBMS that levels of priority is set to nothing puts into non-preemption process queue, and from big to small the MBMS in described non-preemption process queue is sorted according to scheduling metrics value.
3. method as claimed in claim 2, it is characterized in that, the described scheduling metrics value corresponding according to MBMS sorts to MBMS and also comprises:
Seizing for described the MBMS that in process queue, scheduling metrics value is identical, can trigger before the MBMS seized comes by seizing to be designated as;
For the MBMS that scheduling metrics value in non-preemption process queue is identical, sort from big to small according to the QoS metric value of MBMS, described QoS metric value is for characterizing the operation quality requirement of MBMS.
4. method as claimed in claim 3, is characterized in that, the described MBMS the highest to scheduling metric is carried out scheduling and comprised:
When the described scheduling metrics value seizing the MBMS ranked the first in process queue is more than or equal to the scheduling metrics value of the MBMS ranked the first in described non-preemption process queue, seize for described the MBMS Resources allocation ranked the first in process queue;
When the described scheduling metrics value seizing the MBMS ranked the first in process queue is less than the scheduling metrics value of the MBMS ranked the first in described non-preemption process queue, it is the MBMS Resources allocation ranked the first in described non-preemption process queue;
The MBMS be scheduled is removed from the queue of place.
5. method as claimed in claim 4, is characterized in that, the described MBMS the highest to scheduling metric is dispatched and also comprised:
Generate the MSI information that the MBMS the highest with described scheduling metrics value is corresponding.
6. the method as described in any one of claim 1-5, is characterized in that, the scheduling metrics value of MBMS calculates in the following way:
The QoS metric value of MBMS is multiplied by the number of users ratio of described MBMS, obtain the scheduling metrics value that described MBMS is corresponding, wherein, the number of users ratio of described MBMS is: the number of users applying for described MBMS in all communities in multicast broadcast single frequency network region, the ratio of the total number of users of each MBMS of application in all communities accounting for described multicast broadcast single frequency network region.
7. method as claimed in claim 6, is characterized in that, also comprise:
When the number of users ratio of MBMS meets closedown condition, close described MBMS;
Wherein, described closedown condition comprises: the number of users ratio of MBMS is less than or equal to the first threshold value, or,
The number of users ratio of MBMS is between the first threshold value and the second threshold value, and instruction that what MBMS was corresponding seize is not set to trigger seizes;
Described second threshold value is greater than described first threshold value.
8. a MBMS dispatching device, is characterized in that, comprising:
Sequencing unit, for when network congestion, the scheduling metrics value corresponding according to MBMS sorts to MBMS; Described scheduling metrics value is for characterizing scheduling urgency level;
Scheduling unit, dispatches for the MBMS the highest to scheduling metric.
9. device as claimed in claim 8, it is characterized in that, described scheduling metrics value is that the number of users ratio being multiplied by described MBMS by the QoS metric value of MBMS obtains, the number of users ratio of described MBMS is: the number of users applying for described MBMS in all communities in multicast broadcast single frequency network region, the ratio of the total number of users of each MBMS of application in all communities accounting for described multicast broadcast single frequency network region.
10. device as claimed in claim 9, is characterized in that, also comprise:
Closing unit, for when the number of users ratio of MBMS meets closedown condition, closes described MBMS;
Wherein, described closedown condition comprises: the number of users ratio of MBMS is less than or equal to the first threshold value, or,
The number of users ratio of MBMS is between the first threshold value and the second threshold value, and instruction that what MBMS was corresponding seize is not set to trigger seizes;
Described second threshold value is greater than described first threshold value.
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