CN106341210A - Multicast service resource allocation method and system - Google Patents
Multicast service resource allocation method and system Download PDFInfo
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- CN106341210A CN106341210A CN201510408477.8A CN201510408477A CN106341210A CN 106341210 A CN106341210 A CN 106341210A CN 201510408477 A CN201510408477 A CN 201510408477A CN 106341210 A CN106341210 A CN 106341210A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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Abstract
The invention relates to a multicast service resource allocation method and system. The method comprises the steps that the modulation and coding scheme level of a session is configured; the session is grouped; and the grouped session cycle is configured according to the modulation and coding scheme level of the session. The configuration process comprises the steps that S1, a midpoint user of each cell is determined; S2, the channel quality detection average value of the midpoint user of the corresponding cell is calculated; S3, the modulation and coding scheme level corresponding to the lowest value in the channel quality detection average value of the cells is determined; and S4, the modulation and coding scheme level of the session on a physical multicast channel is set. According to the invention, the corresponding modulation and coding scheme level is selected according to the characteristics of a user; through the grouping method, long-time data overstock is avoided, and the session is completed quickly as possible; and the session cycle of a session group is set according to the modulation and coding scheme level of the grouped session, so that multicast resources are rationalized.
Description
Technical field
The present invention relates to multimedia broadcast multicast technical field is and in particular to a kind of multicast service
Resource allocation methods and a kind of resource allocation system of multicast service.
Background technology
For effectively utilizes mobile network resource, third generation partner program (3rd
Generation partnership project, abbreviation 3gpp) propose multimedia broadcast multi-broadcasting business
(multimedia broadcast multicast service, abbreviation mbms).Multimedia broadcasting is many
The business of broadcasting be a kind of transmit the technology of data from a data source to multiple target UEs, real
Show the shared of network (including core net and access network) resource, improve Internet resources (especially
Air interface resource) utilization rate.At Long Term Evolution (long term evolution, abbreviation lte)
The mbms technology of research in system, the multimedia broadcast multi-broadcasting business of referred to as evolution is
e-mbms.
In e-mbms, there are two kinds of transmission means: single cell transmission, multiple cell transmission.
Wherein, single cell transmission refers to that current broadcasting/packet service only passes in a certain specific cell
Defeated, and other cells do not provide the covering of this business, therefore single cell transmission lacks multiple cell conjunction
And the performance gain bringing.Multiple cell transmission refers to that multiple broadcast/group broadcast cell transmission are same
Specific business, thus the merging realizing receiving terminal receives.Multiple cell transmission is entered in access network
The transmission means entering SFN (single frequency network, abbreviation sfn) is multicast
Broadcast Single Frequency Network (multicast broadcast single frequency network, referred to as
Mbsfn) transmission means is it is simply that carried out in multiple cells with identical frequency in the same time
Synchronous transfer.
During with mbsfn transmission means transmission e-mbms business, the same time is entered with same frequency
Multiple cells of row synchronous transfer be a mbsfn region, cell be mbsfn region
Subsection.Multiple difference e-mbms business can be supported in one mbsfn region, each
The transmission channel of 16 carrying multicast services at most can be supported in mbsfn region.Meanwhile, one
Cell may belong to multiple mbsfn regions, and general cell supports 1 to 8 mbsfn region
Overlapping covering, that is, user can receive the business in multiple mbsfn regions.
At present, typically adopt multiple cell multicast coordination entity (multi-cell multicast
Coordination entity, abbreviation mce) complete the isochronous schedules of Radio Resource.Mce connects
Receiving QoS information is qos information, and carries out multicast resource according to qos information
Distribution, thus be that enb carries out resource distribution to evolved base station.Wherein, the business receiving
Comprising qos type identification in the configuration cell of qos information is qci (qos class
Identifier), ARP information is arp (address resolution protocol)
Information, guarantee bit rate (guranteed bit rate, abbreviation gbr) parameter information.
However, when carrying out resource according to qos information and putting, there is resource allocation in current mce
Unreasonable the problems such as.For example, when configuring to Modulation and Coding Scheme grade, whole modulation
The determination process of encoding scheme grade is more complicated, and the feature that can not be directed to user is joined
Put.
Content of the invention
For drawbacks described above, the invention provides a kind of resource allocation methods of multicast service and be
System, the determination process that the method can solve Modulation and Coding Scheme grade in prior art is more multiple
Miscellaneous, and the problem that the feature of user is configured can not be directed to.
In a first aspect, the resource allocation methods of this multicast service are included to meeting on Physical Multicast Channel
The Modulation and Coding Scheme grade of words is configured, and described configuration process includes:
S1, determine the midpoint user of each of multicast broadcast single frequency network region cell, described in
Point user is user in the first preset range for the Signal to Interference plus Noise Ratio in affiliated subdistrict；
S2, the channel matter being obtained in each detection cycle according to the midpoint user of each cell
Detection values, calculate the channel quality of the midpoint user of respective cell in each detection cycle
Detection meansigma methodss；
S3, determine in the described channel quality detection meansigma methodss of each cell in each detection cycle
The Modulation and Coding Scheme grade corresponding to minimum；
S4, according to described minimum corresponding Modulation and Coding Scheme grade, setting is corresponding to detect week
The Modulation and Coding Scheme grade of session on Physical Multicast Channel in phase.
Further, also include in described s2: to each detection after first detection cycle
In cycle, calculated described channel quality detection meansigma methodss are smoothed；Described s3
In described channel quality detection meansigma methodss be smoothing processing after analog value；Or
Also include in described s3: to institute in each detection cycle after first detection cycle really
Fixed described minimum corresponding Modulation and Coding Scheme grade is smoothed；In described s4
The corresponding Modulation and Coding Scheme grade of described minimum is the analog value after smoothing processing.
Further, described s4 includes:
Judge QoS classification logotype grade and second preset range of each session
The relation of QoS classification logotype grade；
If the QoS classification logotype grade of corresponding session is less than the described second default model
The lowest class in the QoS classification logotype grade enclosed, then correspond to described minimum
Modulation and Coding Scheme grade raise the first predetermined level, and by raise after Modulation and Coding Scheme
Grade is as the Modulation and Coding Scheme grade of described corresponding session；
If the QoS classification logotype grade of corresponding session is in described second preset range
QoS classification logotype grade in, then by corresponding for described minimum modulating-coding side
Case grade is as the Modulation and Coding Scheme grade of described corresponding session；
If the QoS classification logotype grade of corresponding session is higher than the described second default model
Highest ranking in the QoS classification logotype grade enclosed, then correspond to described minimum
Modulation and Coding Scheme grade lower the second predetermined level, and by lower after Modulation and Coding Scheme
Grade is as the Modulation and Coding Scheme grade of described corresponding session.
Further, the method also includes the session on Physical Multicast Channel is grouped, tool
Body includes:
In a conversation measurement period, judge QoS classification logotype grade phase
Whether the number of same session exceedes predetermined number；
If described number exceedes described predetermined number, by QoS classification logotype grade
Initiate the minimum between data starts to transmit from conversation request in all sessions of identical to wait
The session of time the shortest predetermined number is divided into one group.
Further, described by all for QoS classification logotype grade identical sessions
In from conversation request initiate to data start to transmit between the shortest default of minimum latency
The session of quantity is divided into one group, comprising:
According to from conversation request initiate to data start transmit between minimum latency length
Short, all for QoS classification logotype grade identical sessions are ranked up；
According to ranking results, the shorter session of described minimum latency more preferentially enters packet,
Until the quantity entering described packet reaches described predetermined number.
Further, the method is also included to subframe needed for each session on Physical Multicast Channel
Total quantity is configured, and specifically includes:
A1, the guarantee according to corresponding to each of conversation group session on Physical Multicast Channel
The Modulation and Coding Scheme grade of bit rate, system bandwidth and place conversation group, calculates corresponding meeting
The session cycle of words；
The least common multiple in the session cycle of all sessions in a2, the described conversation group of calculating, will
Described least common multiple is as the group cycle of described conversation group；
The session of each session in a3, the group cycle according to described conversation group and described conversation group
In the cycle, calculate the subframe total quantity required for corresponding session, and according to described subframe total quantity pair
Corresponding session is configured.
Further, in described a1, the session cycle of corresponding session is calculated by following formula:
Wherein, 1≤i≤m, m are the number of session in each conversation group, tiFor i-th session
The session cycle, niThe number of sub frames needing for i-th session in the unit time, gbrsession-iFor i-th
The ensures bit rate of individual session, qiThe data volume transmitted by a subframe of i-th session, qi
By system bandwidth and i-th session place conversation group Modulation and Coding Scheme grade determine.
Second aspect, the resource allocation system of this multicast service includes the first configuration module, is used for
The Modulation and Coding Scheme grade of session on Physical Multicast Channel is configured, described first configuration
Module includes:
Midpoint user's determining unit, for determining each of multicast broadcast single frequency network region cell
Midpoint user, described midpoint user be affiliated subdistrict in Signal to Interference plus Noise Ratio in the first preset range
User；
First computing unit, for according to the midpoint user of each cell in each detection cycle
The channel quality detection value of interior acquisition, calculates the midpoint of respective cell in each detection cycle
The channel quality detection meansigma methodss of user；
Determining unit, for determining the described channel quality inspection of each cell in each detection cycle
Survey the Modulation and Coding Scheme grade corresponding to minimum in meansigma methodss；
First dispensing unit, for according to described minimum corresponding Modulation and Coding Scheme grade,
The Modulation and Coding Scheme grade of session on Physical Multicast Channel in corresponding detection cycle is set.
Further, this system also includes grouping module, for the meeting on Physical Multicast Channel
Words are grouped；
Described grouping module specifically for:
In a conversation measurement period, judge QoS classification logotype grade phase
Whether the number of same session exceedes predetermined number；
If described number exceedes described predetermined number, by QoS classification logotype grade
Initiate the minimum between data starts to transmit from conversation request in all sessions of identical to wait
The session of time the shortest predetermined number is divided into one group.
Further, this system also includes the second configuration module, for Physical Multicast Channel
Needed for each session, subframe total quantity is configured；
Described second configuration module includes:
Second computing unit, for according to each of conversation group session on Physical Multicast Channel
Corresponding Modulation and Coding Scheme of guarantee bit rate, system bandwidth and place conversation group etc.
Level, calculates the session cycle of corresponding session；
3rd computing unit, for calculate all sessions in described conversation group the session cycle
Little common multiple, using described least common multiple as described conversation group the group cycle；
Second dispensing unit, for every in the group cycle according to described conversation group and described conversation group
In the session cycle of one session, calculate the subframe total quantity required for corresponding session, and according to described
Subframe total quantity configures to corresponding session.
The resource allocation methods of the present invention and system only have chosen midpoint user, solve its channel
Quality testing meansigma methodss, and represent whole cell with the channel quality detection meansigma methodss of midpoint user
Channel quality detection meansigma methodss, reduce workload.Midpoint user can be according to the feature of user
Chosen, it is achieved that corresponding Modulation and Coding Scheme grade is chosen according to user's feature
Purpose.
Brief description
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is to show
Meaning property and should not be construed as carrying out any restriction to the present invention, in the accompanying drawings:
Fig. 1 shows a kind of stream of embodiment of resource allocation methods according to multicast service of the present invention
Journey schematic diagram；
Fig. 2 shows in the resource allocation methods of multicast service of the present invention on Physical Multicast Channel
The schematic flow sheet that subframe total quantity needed for each session is configured；
Fig. 3 shows a kind of knot of embodiment of resource allocation system according to multicast service of the present invention
Structure block diagram.
Specific embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, tie below
Close the drawings and specific embodiments the present invention is further described in detail.Need explanation
It is that, in the case of not conflicting, the feature in embodiments herein and embodiment can be mutual
Combination.
Elaborate a lot of details in the following description in order to fully understand the present invention, but
It is that the present invention can also be different from other modes described here to implement using other, therefore,
Protection scope of the present invention is not limited by following public specific embodiment.
The present invention provides a kind of resource allocation methods of multicast service, as shown in figure 1, the method
Configure including to the Modulation and Coding Scheme grade of session on Physical Multicast Channel, described configuration
Process includes:
S1, determine the midpoint user of each of multicast broadcast single frequency network region cell, described in
Point user is user in the first preset range for the Signal to Interference plus Noise Ratio in affiliated subdistrict, and described letter is dry to make an uproar
Than for Signal to Interference plus Noise Ratio (signal to interference plus noise ratio, that is,
sinr)；
S2, the channel matter being obtained in each detection cycle according to the midpoint user of each cell
Detection values, calculate the channel quality of the midpoint user of respective cell in each detection cycle
Detection meansigma methodss；
S3, determine in the described channel quality detection meansigma methodss of each cell in each detection cycle
The Modulation and Coding Scheme grade corresponding to minimum；
S4, according to described minimum corresponding Modulation and Coding Scheme grade, setting is corresponding to detect week
The Modulation and Coding Scheme grade of session on Physical Multicast Channel in phase.
Wherein, channel quality detection value can be the size of CQI cqi, certainly
Can for other can characterize channel quality quality parameter size.
Wherein, the first preset range according to practical situation sets itself, such as [4,8], that is, is believed
Dry making an uproar than the user between 4～8 is midpoint user.
The present invention only have chosen certain customers, solves its channel quality detection meansigma methods, is used in combination
The channel quality detection meansigma methodss of this certain customers represent that the channel quality detection of whole cell is put down
Average, reduces workload.Compile it is achieved that corresponding modulation is chosen according to user's feature simultaneously
Code scheme grade.
Further, since the present invention is according to the channel quality of each cell in multicast broadcast single frequency network region
Modulation and Coding Scheme grade mcs corresponding to minimum in detection meansigma methodssinit, to session
Modulation and Coding Scheme grade is configured it is ensured that all cells in multicast broadcast single frequency network region
In user can normally receive data, for edge customer can using merge receive multiple
The mbms data of neighbor cell is meeting the quality of reception.Therefore, The invention also achieves protecting
On the basis of the card quality of reception, make user in all cells in multicast broadcast single frequency network region all
The purpose of data can be normally received.
In the specific implementation process of technique scheme, in order to avoid cell detects week indivedual
Determined by phase, the Modulation and Coding Scheme change of rank corresponding to described minimum is excessive, so that
Excessive in being changed therewith to the Modulation and Coding Scheme grade that session configures according to this value, can carry out
Certain smoothing processing, the process of smoothing processing is:
To described minimum determined by each detection cycle after first detection cycle
Corresponding Modulation and Coding Scheme grade is smoothed.In to current detection cycle, institute is true
When fixed described minimum corresponding Modulation and Coding Scheme grade is smoothed, can be according to this
The corresponding tune of described minimum in one detection cycle of current period or multiple detection cycle
Encoding scheme grade processed is smoothed.The corresponding modulation of described minimum in described s4 is compiled
Code scheme grade is the analog value after smoothing processing.
By minimum corresponding Modulation and Coding Scheme grade and calculated institute in s2 in s3
Stating channel quality detection meansigma methodss is can be directly corresponding, and therefore smoothing processing can also be:
To calculated described channel in each detection cycle after first detection cycle
Quality testing meansigma methodss are smoothed.To calculated described in the current detection cycle
When channel quality detection meansigma methodss are smoothed, can be detected according to the one of this current period
Channel quality detection meansigma methodss in cycle or multiple detection cycle are smoothed.Described s3
In channel quality detection meansigma methodss be smoothing processing after analog value.
In being embodied as of step s4 in technique scheme, can described minimum corresponding
Modulation and Coding Scheme grade mcsinitIt is allocated to each session on Physical Multicast Channel.Certainly, by
It is that qci grade is different in the QoS classification logotype grade of each session, can also root
According to the qci grade of each session, to its Modulation and Coding Scheme in mcsinitOn the basis of adjusted
Whole so that being mcs for different multicast services using different Modulation and Coding Scheme grades
Grade is so that the configuration of multicast resource is more rationally and flexible.Its detailed process can be:
Judge QoS classification logotype grade and second preset range of each session
The relation of QoS classification logotype grade；
If the QoS classification logotype grade of corresponding session is less than the described second default model
The lowest class in the QoS classification logotype grade enclosed, then correspond to described minimum
Modulation and Coding Scheme grade raise the first predetermined level, and by raise after Modulation and Coding Scheme
Grade is as the Modulation and Coding Scheme grade of described corresponding session；
If the QoS classification logotype grade of corresponding session is in described second preset range
QoS classification logotype grade in, then by corresponding for described minimum modulating-coding side
Case grade is as the Modulation and Coding Scheme grade of described corresponding session；
If the QoS classification logotype grade of corresponding session is higher than the described second default model
Highest ranking in the QoS classification logotype grade enclosed, then correspond to described minimum
Modulation and Coding Scheme grade lower the second predetermined level, and by lower after Modulation and Coding Scheme
Grade is as the Modulation and Coding Scheme grade of described corresponding session.
With an example, above-mentioned detailed process is further illustrated below:
Set the second preset range as { 2,3 }, when the qci grade of a session is 2 or 3, this meeting
The modulating-coding grade of words is set to minimum corresponding Modulation and Coding Scheme grade mcsinit, that is,
By mcsinitConfiguration gives the multicast service that qci grade is 2 or 3.Qci grade when a session
For 1, then by the Modulation and Coding Scheme grade of this session in mcsinitOn the basis of raise δ etc.
Level, will mcsinit+ δ is allocated to the multicast service that qci grade is 1.Qci when a session
Grade is 4, then by the Modulation and Coding Scheme grade of this session in mcsinitOn the basis of lower ξ
Individual grade, will mcsinit- ξ is allocated to the multicast service that qci grade is 4.
In addition, in the specific implementation process of technique scheme, described s3 and s4 can be by how little
Area's multicast coordination entity execution.Specific implementation process can be: multiple cell multicast coordination entity
Obtain the described channel quality detection meansigma methodss of each cell in mbsfn region, Ran Houjin
The follow-up operation of row.
Prior art, when being grouped, is only grouped according to qci grade.Due to one
It is only capable of on bar Physical Multicast Channel carrying 29 sessions, when qci grade identical number occurs
Situation during more than 29, then be irrational only according to qci hierarchal grouping.So this
Bright for this defect, additionally provide a kind of to broadcasting coordination entity to the session on Physical Multicast Channel
The method being grouped, specifically includes:
In a conversation measurement period, judge QoS classification logotype grade phase
Whether the number of same session exceedes predetermined number；
If described number exceedes described predetermined number, by QoS classification logotype grade
Initiate the minimum between data starts to transmit from conversation request in all sessions of identical to wait
The session of time the shortest predetermined number is divided into one group.
Article one, Physical Multicast Channel at most can carry 29 sessions, therefore can set predetermined number
For 29.Parameter therein: initiate the minimum between data starts to transmit from conversation request and wait
Time, English is expressed as minimum time to mbms data transfer.
The method first determines whether that QoS classification logotype grade is qci grade identical
The number of session, is then directed to different situations, using different method packets.Wherein, when
When qci grade identical session number exceedes predetermined number, " sent out from conversation request according to parameter
Play to data the minimum latency starting between transmission " selected, select minimum wait
Time the shortest predetermined number session is divided into one group.It can be seen that, the present invention proposes a kind of working as
A kind of solution when qci grade identical session number is more than 29, also meets meanwhile
The minimum latency of all sessions.
Wherein, when described number is less equal than described predetermined number, described business can be taken
The business quality category mark all sessions of grade identical are divided into one group.
In the specific implementation process of above-mentioned packet mode, can by sort or search by way of,
Select the session of predetermined number.Wherein, sortord can be:
According to from conversation request initiate to data start transmit between minimum latency length
Short, all for QoS classification logotype grade identical sessions are ranked up；
According to ranking results, the shorter session of described minimum latency more preferentially enters packet,
Until the quantity entering described packet reaches described predetermined number.
By way of the session that predetermined number is gone out by sequencing selection, simple, easily realization.
This group technology can be using the execution of multiple cell multicast coordination entity.
In prior art, when to period assignment is carried out to the conversation group on Physical Multicast Channel,
Not a kind of concrete, targetedly session cycle determination method.In this regard, present invention additionally comprises
Group cycle to group session each on Physical Multicast Channel and subframe sum needed for each session
Amount is configured, as shown in Fig. 2 specifically including:
A1, the guarantee according to corresponding to each of conversation group session on Physical Multicast Channel
The Modulation and Coding Scheme grade of bit rate, system bandwidth and place conversation group, calculates corresponding meeting
The session cycle of words；
The least common multiple in the session cycle of all sessions in a2, the described conversation group of calculating, will
Described least common multiple is as the group cycle of described conversation group；
The session of each session in a3, the group cycle according to described conversation group and described conversation group
In the cycle, calculate the subframe total quantity required for corresponding session, and according to described subframe total quantity pair
Corresponding session is configured.
Wherein, the group cycle should be understood to the session cycle of a conversation group, because the group cycle is
The least common multiple in the session cycle of all sessions, therefore group cycle are the session week of a session
The integral multiple of phase.Here, the concept of conversation group is identical with the concept of packet, is divided into one group of institute
Words group for a moment is formed by session.
Wherein, in being embodied as of being configured of session cycle, session cycle of corresponding session
Can be obtained by following manner:
The data volume that ensures bit rate according to corresponding session and a subframe are transmitted, calculates single
The number of sub frames that in the time of position, corresponding session needs；
The number of sub frames being needed according to session corresponding in the described unit interval, calculates the meeting of corresponding session
The words cycle.
Specifically can be calculated using below equation:
Wherein, 1≤i≤m, m are the number of session in each conversation group, tiFor i-th session
The session cycle, niThe number of sub frames needing for i-th session in the unit time, niIt is through rounding up
Value afterwards；qiThe data volume transmitted by a subframe of i-th session, qiBy system bandwidth
Determine with the Modulation and Coding Scheme grade of i-th session place conversation group.
Subframe total quantity required for i-th session is w/ti.
The configuration process in this session cycle can be executed by multiple cell multicast coordination entity.The present invention
Provide a kind of specific session period assignment method, and the method has calculating simply, in fact
Now easy advantage.
Three major parts in the present invention: (1) compiles to the modulation of session on Physical Multicast Channel
Code scheme grade is configured；(2) session on Physical Multicast Channel is grouped；(3) right
On Physical Multicast Channel, the session cycle of each group session is configured.The configuration of wherein three parts
Can not association or (3rd) partly (1st) partly with (2nd) part on the basis of
Complete.
As shown in figure 3, present invention also offers a kind of resource allocation system 100 of multicast service,
This system includes the first configuration module 101, for the modulation volume to session on Physical Multicast Channel
Code scheme grade is configured.Described first configuration module 101 includes:
Midpoint user's determining unit 1011, for determining each of multicast broadcast single frequency network region
The midpoint user of cell, described midpoint user is that in affiliated subdistrict, Signal to Interference plus Noise Ratio presets model first
User in enclosing；
First computing unit 1012, detects at each for the midpoint user according to each cell
The channel quality detection value obtaining in cycle, calculates respective cell in each detection cycle
The channel quality detection meansigma methodss of midpoint user；
Determining unit 1013, for determining the described channel matter of each cell in each detection cycle
The Modulation and Coding Scheme grade corresponding to minimum in amount detection meansigma methodss；
First dispensing unit 1014, for according to corresponding Modulation and Coding Scheme of described minimum etc.
Level, arranges the Modulation and Coding Scheme grade of session on Physical Multicast Channel in corresponding detection cycle.
Further, this system also includes grouping module 102, for Physical Multicast Channel
Session be grouped；
Described grouping module specifically for:
In a conversation measurement period, judge QoS classification logotype grade phase
Whether the number of same session exceedes predetermined number；
If described number exceedes described predetermined number, by QoS classification logotype grade
Initiate the minimum between data starts to transmit from conversation request in all sessions of identical to wait
The session of time the shortest predetermined number is divided into one group.
Further, this system also includes the second configuration module, for Physical Multicast Channel
Needed for each session, subframe total quantity is configured；
Described second configuration module 103 includes:
Second computing unit 1031, for according to each of conversation group on Physical Multicast Channel
The Modulation and Coding Scheme of guarantee bit rate, system bandwidth and place conversation group corresponding to session
Grade, calculates the session cycle of corresponding session；
3rd computing unit 1032, for calculating the session cycle of all sessions in described conversation group
Least common multiple, using described least common multiple as described conversation group the group cycle；
Wherein, the second computing unit, the 3rd computing unit can be integrated the unit of setting,
Can be the unit of split setting.
Second dispensing unit 1033, for the group cycle according to described conversation group and described conversation group
In each session the session cycle, calculate corresponding session required for subframe total quantity, and according to
Described subframe total quantity configures to corresponding session.
The function structure module being above-mentioned resource allocation methods due to this resource allocation system, has
Identical beneficial effect.To the explanation of each module or unit, explanation in this resource allocation system
Or preferred implementation refer to the appropriate section of resource allocation methods, repeat no more here.
In sum, the present invention provides the resource allocation methods of multicast service and system, can be real
Now to the configuration of mcs grade, the packet to multicast conversation and/or the configuration to the session cycle,
Ensure that the quality of reception of all cells in mbsfn region it is achieved that multicast resource reasonable
Change and utilize.Meanwhile, the same tune of Radio Resource can be realized using multiple cell multicast coordination entity
Degree and planning.
Technical scheme is described in detail above in association with accompanying drawing it is contemplated that in prior art
The problem that residual multiple users interference brings.By technical scheme, residual can be reduced many
With interference, thus reducing the various problems that it brings.
In the present invention, term " first ", " second ", " the 3rd " are only used for describing purpose,
And it is not intended that indicating or hint relative importance.Term " multiple " refer to two or two with
On, limit unless otherwise clear and definite.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can
To make various modifications and variations without departing from the spirit and scope of the present invention, so
Modification and within the scope of modification each falls within and is defined by the appended claims.
Claims (10)
1. a kind of resource allocation methods of multicast service are it is characterised in that include many to physics
The Modulation and Coding Scheme grade broadcasting session on channel is configured, and described configuration process includes:
S1, determine the midpoint user of each of multicast broadcast single frequency network region cell, described in
Point user is user in the first preset range for the Signal to Interference plus Noise Ratio in affiliated subdistrict；
S2, the channel matter being obtained in each detection cycle according to the midpoint user of each cell
Detection values, calculate the channel quality of the midpoint user of respective cell in each detection cycle
Detection meansigma methodss；
S3, determine in the described channel quality detection meansigma methodss of each cell in each detection cycle
The Modulation and Coding Scheme grade corresponding to minimum；
S4, according to described minimum corresponding Modulation and Coding Scheme grade, setting is corresponding to detect week
The Modulation and Coding Scheme grade of session on Physical Multicast Channel in phase.
2. method according to claim 1 it is characterised in that
Also include in described s2: calculate in each detection cycle after first detection cycle
The described channel quality detection meansigma methodss obtaining are smoothed；Described channel in described s3
Quality testing meansigma methodss are the analog value after smoothing processing；Or
Also include in described s3: to institute in each detection cycle after first detection cycle really
Fixed described minimum corresponding Modulation and Coding Scheme grade is smoothed；In described s4
The corresponding Modulation and Coding Scheme grade of described minimum is the analog value after smoothing processing.
3. method according to claim 1 is it is characterised in that described s4 includes:
Judge QoS classification logotype grade and second preset range of each session
The relation of QoS classification logotype grade；
If the QoS classification logotype grade of corresponding session is less than the described second default model
The lowest class in the QoS classification logotype grade enclosed, then correspond to described minimum
Modulation and Coding Scheme grade raise the first predetermined level, and by raise after Modulation and Coding Scheme
Grade is as the Modulation and Coding Scheme grade of described corresponding session；
If the QoS classification logotype grade of corresponding session is in described second preset range
QoS classification logotype grade in, then by corresponding for described minimum modulating-coding side
Case grade is as the Modulation and Coding Scheme grade of described corresponding session；
If the QoS classification logotype grade of corresponding session is higher than the described second default model
Highest ranking in the QoS classification logotype grade enclosed, then correspond to described minimum
Modulation and Coding Scheme grade lower the second predetermined level, and by lower after Modulation and Coding Scheme
Grade is as the Modulation and Coding Scheme grade of described corresponding session.
4. method according to claim 1 is it is characterised in that also include to physical multicast
Session on channel is grouped, and specifically includes:
In a conversation measurement period, judge QoS classification logotype grade phase
Whether the number of same session exceedes predetermined number；
If described number exceedes described predetermined number, by QoS classification logotype grade
Initiate the minimum between data starts to transmit from conversation request in all sessions of identical to wait
The session of time the shortest predetermined number is divided into one group.
5. method according to claim 4 it is characterised in that described by business service matter
Initiate to data to start to transmit from conversation request in the amount all sessions of classification logotype grade identical
Between the session of the shortest predetermined number of minimum latency be divided into one group, comprising:
According to from conversation request initiate to data start transmit between minimum latency length
Short, all for QoS classification logotype grade identical sessions are ranked up；
According to ranking results, the shorter session of described minimum latency more preferentially enters packet,
Until the quantity entering described packet reaches described predetermined number.
6. according to the arbitrary described method of claim 1-5 it is characterised in that also including to thing
On reason Multicast Channel, subframe total quantity needed for each session is configured, and specifically includes:
A1, the guarantee according to corresponding to each of conversation group session on Physical Multicast Channel
The Modulation and Coding Scheme grade of bit rate, system bandwidth and place conversation group, calculates corresponding meeting
The session cycle of words；
The least common multiple in the session cycle of all sessions in a2, the described conversation group of calculating, will
Described least common multiple is as the group cycle of described conversation group；
The session of each session in a3, the group cycle according to described conversation group and described conversation group
In the cycle, calculate the subframe total quantity required for corresponding session, and according to described subframe total quantity pair
Corresponding session is configured.
7. method according to claim 6 is it is characterised in that accordingly can in described a1
The session cycle of words is calculated by following formula:
Wherein, 1≤i≤m, m are the number of session in each conversation group, tiFor i-th session
The session cycle, niThe number of sub frames needing for i-th session in the unit time, gbrsession-iFor i-th
The ensures bit rate of individual session, qiThe data volume transmitted by a subframe of i-th session, qi
Determined by the Modulation and Coding Scheme grade of system bandwidth and i-th session place conversation group.
8. a kind of resource allocation system of multicast service is it is characterised in that include the first configuration
Module, for configuring to the Modulation and Coding Scheme grade of session on Physical Multicast Channel, institute
State the first configuration module to include:
Midpoint user's determining unit, for determining each of multicast broadcast single frequency network region cell
Midpoint user, described midpoint user be affiliated subdistrict in Signal to Interference plus Noise Ratio in the first preset range
User；
First computing unit, for according to the midpoint user of each cell in each detection cycle
The channel quality detection value of interior acquisition, calculates the midpoint of respective cell in each detection cycle
The channel quality detection meansigma methodss of user；
Determining unit, for determining the described channel quality inspection of each cell in each detection cycle
Survey the Modulation and Coding Scheme grade corresponding to minimum in meansigma methodss；
First dispensing unit, for according to described minimum corresponding Modulation and Coding Scheme grade,
The Modulation and Coding Scheme grade of session on Physical Multicast Channel in corresponding detection cycle is set.
9. system according to claim 8 is it is characterised in that also include grouping module,
For being grouped to the session on Physical Multicast Channel；
Described grouping module specifically for:
In a conversation measurement period, judge QoS classification logotype grade phase
Whether the number of same session exceedes predetermined number；
If described number exceedes described predetermined number, by QoS classification logotype grade
Initiate the minimum between data starts to transmit from conversation request in all sessions of identical to wait
The session of time the shortest predetermined number is divided into one group.
10. system according to claim 8 or claim 9 is joined it is characterised in that also including second
Put module, for joining to subframe total quantity needed for each session on Physical Multicast Channel
Put；
Described second configuration module includes:
Second computing unit, for according to each of conversation group session on Physical Multicast Channel
Corresponding Modulation and Coding Scheme of guarantee bit rate, system bandwidth and place conversation group etc.
Level, calculates the session cycle of corresponding session；
3rd computing unit, for calculate all sessions in described conversation group the session cycle
Little common multiple, using described least common multiple as described conversation group the group cycle；
Second dispensing unit, for every in the group cycle according to described conversation group and described conversation group
In the session cycle of one session, calculate the subframe total quantity required for corresponding session, and according to described
Subframe total quantity configures to corresponding session.
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