CN101958828A - Service multiplex processing method and device - Google Patents
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- CN101958828A CN101958828A CN2009101403672A CN200910140367A CN101958828A CN 101958828 A CN101958828 A CN 101958828A CN 2009101403672 A CN2009101403672 A CN 2009101403672A CN 200910140367 A CN200910140367 A CN 200910140367A CN 101958828 A CN101958828 A CN 101958828A
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Abstract
The invention provides a service multiplex processing method and a device. The method of the invention comprises the following steps: acquiring transmission features of a first service flow which is a service flow with the first feature in the current multiplex transmission; calculating the variance of the first service flow according to the recorded transmission features of the first service flow; when the new service flow with the first feature is added, using the variance sigma 2 as the variance of the second service flow for acquiring the packet loss rate expression of the second service flow which is the service flow for multiplex transmission after the new service flow is added to the first service flow; and carrying out resource allocation or access control on the new service flow according to the packet loss rate expression. The invention reduces the difficulty in realizing multiplex resource allocation or access control, and can acquire multiplexing gain while ensuring QoS.
Description
Technical field
The present invention relates to communication, Internet technical field, particularly a kind of service integration processing method and device.
Background technology
In the communication system, how to give the traffic assignments resource is a very important problem.When carrying out resource allocation, should guarantee professional QoS (Quality of Service, service quality) requirement, make the systematic cost minimum of paying again.No matter be to cable network or wireless network, systematic cost mainly comprises following two aspects: link bandwidth and buffer pool size.For wireless network, link bandwidth is just more important comparatively speaking.
The Mean Speed of supposing single video traffic is 320kbps, and qos requirement is as follows: 90% packet is not transmitted time delay, supposes to satisfy above-mentioned requirements, and the link bandwidth of requirement (service speed of link just) should be more than or equal to 340kbps.
But when three independently the Mean Speed video traffic that is 320kbps mixed transmission, because business is independent separately, when certain is professional when arriving peak rate, other business may be in the low ebb of data rate.Therefore, make when three independently the Mean Speed video stream traffic that is 320kbps mixes transmission, the variation of total data rate just tends to be steady, under the situation of qos requirement identical (90% packet is not transmitted time delay), the service speed of link is that 1000Kbps can meet the demands.This service speed is less than 340 * 3=1020kbps, thereby brought spatial multiplexing gain.This spatial multiplexing gain is calculated as follows: (1020-1000)/1020 ≈ 2%.
Above-mentioned is that example is illustrated with the video traffic, but should be appreciated that, equally also there is spatial multiplexing gain in the mix of traffic of other types when transmitting.
Simultaneously, describe, in present specification, the two or more Business Streams that mix transmission are called multiplexing service stream for convenient.
From top description as can be seen, when giving multiplexing service flow distribution link circuit resource, must consider spatial multiplexing gain.This resource allocation problem is an optimization problem, and the target of finding the solution this optimization problem is exactly to satisfy under the situation that packet loss requires (qos requirement), and the link bandwidth sum that makes all business need altogether is minimum.
Certainly, consider from another point of view, can think that also this target is: under the situation that satisfies the requirement of packet loss requirement (qos requirement) and link bandwidth, the number maximum of the Business Stream that makes it possible to insert.
Yet, for any situation, how to obtain the key that packet loss all is a problem, and the packet loss of multiplex stream is relevant with following factor: the bandwidth of service feature, number of services, link and the capacity of buffering area etc.
Comprise approximate method in the existing method of obtaining packet loss, be described below based on Brownian bridge.
In the approximate method based on Brownian bridge, make B (t) expression Brownian movement, its average is EB (t)=μ t, and variance is VarB (t)=σ
2T, if Business Stream satisfies the feature of Brownian bridge, its probability-distribution function just can clearly obtain so.
For any one Business Stream,, so, then can adopt the approximate method of Brownian bridge, μ that obtains being similar to and σ if feature does not satisfy Brownian bridge
2, and then obtain the expression formula of the drop probabilities L of the current multiplexing service of drop probabilities stream:
L(B，C，N)＝exp(-2B(B+C-Nμ)/Nσ
2)
Wherein, B is a buffer size of distributing to current multiplexing service stream, and C is a link bandwidth of distributing to current multiplexing service stream, and N is a Business Stream number in the current multiplexing service stream, and μ is the data transfer rate average of current multiplexing service stream, σ
2Data transfer rate variance for current multiplexing service stream.
After obtaining above-mentioned L, can carry out resource allocation and access control.
Yet the inventor finds that in the process that realizes the embodiment of the invention there is following shortcoming at least in above-mentioned method with the approximate information source of Brownian bridge:
Though with respect to simpler with the method for semi-Markov modeling information source for, still need obtain the information source feature of complexity with the method for the approximate information source of Brownian bridge.And, also comprise other complex features more, as state transition probability, state time of staying or the like because the information source feature not only comprises average, these simple features of peak rate.And in real system, it almost is infeasible obtaining accurate information source feature.Therefore, the method with the approximate information source of Brownian bridge can't be applicable to complicated business stream.
Summary of the invention
The purpose of this invention is to provide a kind of service integration processing method and device, reduce the realization difficulty of multiplexed resource distribution or access control.
To achieve these goals, the embodiment of the invention provides a kind of service integration processing method, comprising:
Obtain the transmission feature of first Business Stream, described first Business Stream is the Business Stream with first feature of current multiplexing transmission;
Calculate the variances sigma of first Business Stream according to the transmission feature of described first Business Stream of above-mentioned record
2
Add fashionablely at new Business Stream, use described variances sigma with described first feature
2Obtain the packet loss expression formula of described second Business Stream as the variance of second Business Stream, described second Business Stream is the Business Stream that adds the multiplexing transmission that forms behind the described new Business Stream in described first Business Stream;
According to described packet loss expression formula described new Business Stream is carried out resource allocation or access control.
Above-mentioned service integration processing method, wherein, the transmission feature of described first Business Stream comprises:
The packet loss L of described first Business Stream
i, described first Business Stream data transfer rate average μ, distribute to the link bandwidth C of described first Business Stream
i, distribute to the buffer size B of first Business Stream
iNumber i with the described first Business Stream neutron Business Stream.
Above-mentioned service integration processing method, wherein, the variance of described first Business Stream is-2B
i(B
i+ C
i-i μ)/(ilogL
i).
Above-mentioned service integration processing method, wherein, described B
iSmaller or equal to described C
iWith the product of D, described D is the maximum queuing delay of the described first Business Stream requirement.
Above-mentioned service integration processing method, wherein, the packet loss expression formula of described second Business Stream is as follows:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, C
I+lThe link bandwidth of described second Business Stream, B are distributed in expression
I+lThe buffer size of described second Business Stream, B are distributed in expression
I+lSmaller or equal to described C
I+lWith the product of D, μ is the data transfer rate average of described second Business Stream, σ
2It is the variance of first Business Stream.
To achieve these goals, the embodiment of the invention also provides a kind of service integration processing unit, comprising:
The feature acquisition module is used to obtain the transmission feature of first Business Stream, and described first Business Stream is the Business Stream with first feature of current multiplexing transmission;
The variance computing module is used for calculating according to the transmission feature of described first Business Stream of above-mentioned record the variance of described first Business Stream;
The packet loss acquisition module is used for adding at the new Business Stream with first feature fashionable, uses variances sigma
2Obtain the packet loss expression formula of described second Business Stream as the variance of second Business Stream, described second Business Stream is the Business Stream that adds the multiplexing transmission that forms behind the described new Business Stream in described first Business Stream;
Service Processing Module is used for according to described packet loss expression formula described new Business Stream being carried out resource allocation or access control.
Above-mentioned service integration processing unit, wherein, the transmission feature of described first Business Stream comprises:
The packet loss L of described first Business Stream
i, described first Business Stream data transfer rate average μ, distribute to the link bandwidth C of described first Business Stream
i, distribute to the buffer size B of first Business Stream
iNumber i with the described first Business Stream neutron Business Stream.
Above-mentioned service integration processing unit, wherein, the variance of described first Business Stream is-2B
i(B
i+ C
i-i μ)/(ilogL
i).
Above-mentioned service integration processing unit, wherein, described B
iSmaller or equal to described C
iWith the product of D, described D is the maximum queuing delay of the described first Business Stream requirement.
Above-mentioned service integration processing unit, wherein, the packet loss expression formula of described second Business Stream is as follows:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, C
I+lThe link bandwidth of described second Business Stream, B are distributed in expression
I+lThe buffer size of described second Business Stream, B are distributed in expression
I+lSmaller or equal to described C
I+lWith the product of D, μ is the data transfer rate average of described second Business Stream.
To achieve these goals, the embodiment of the invention also provides a kind of service integration processing method, is used for Long Term Evolution LTE system, comprising:
The eMB-SC of multicast and broadcast service centre of evolution is the multiplex stream Resources allocation, comprises the MBMS of the multimedia broadcast multicast system Business Stream that block error rate BLER is different in the described multiplex stream;
It is the resource that multiplex stream is distributed that described eMB-SC notifies many sub-districts/multicast cooperation entity MCE by gateway;
Described MCE is after knowing that described eBM-SC is the resource of multiplex stream distribution, with described eBM-SC is that the resource that multiplex stream is distributed becomes corresponding M BSFN number of sub-frames, and send semi-static schedule information all evolution base station eNB to MCE subordinate, wherein comprise in this semi-persistent scheduling information: the modulating-coding type that the sending order of the subframe index of MBSFN, described MBMS Business Stream, the ID of each described MBMS Business Stream and each described MBMS Business Stream adopt;
ENB carries out described multiplex stream transmission according to semi-persistent scheduling information, and with dynamic scheduling information notifying MBMS user, described dynamic scheduling information comprises: the information of the subframe at described MBMS Business Stream place.
Above-mentioned service integration processing method, wherein, the MBMS Business Stream that the modulating-coding type is identical sends with adjacent order.
Above-mentioned service integration processing method, wherein, it is the resource that multiplex stream is distributed that described eBM-SC begins the described MCE of message informing by session.
Above-mentioned service integration processing method, wherein, described eMB-SC comprises the steps: for the multiplex stream Resources allocation
Obtain the transmission feature of first Business Stream, described first Business Stream is the Business Stream with first feature of current multiplexing transmission;
Calculate the variances sigma of described first Business Stream according to the transmission feature of described first Business Stream of above-mentioned record
2
Add fashionablely at new Business Stream, use described variances sigma with described first feature
2Obtain the packet loss expression formula of described second Business Stream as the variance of second Business Stream, described second Business Stream is the Business Stream that adds the multiplexing transmission that forms behind the described new Business Stream in described first Business Stream;
According to described packet loss expression formula described new Business Stream is carried out resource allocation.
Above-mentioned service integration processing method, wherein, the packet loss L of described first Business Stream
i, described first Business Stream data transfer rate average μ, distribute to the link bandwidth C of described first Business Stream
i, distribute to the buffer size B of first Business Stream
iNumber i with the described first Business Stream neutron Business Stream.
Above-mentioned service integration processing method, wherein, the variance of described first Business Stream is-2B
i(B
i+ C
i-i μ)/(ilogL
i).
Above-mentioned service integration processing method, wherein, described B
iSmaller or equal to described C
iWith the product of D, described D is the maximum queuing delay of the described first Business Stream requirement.
Above-mentioned service integration processing method, wherein, the packet loss expression formula of described second Business Stream is as follows:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, C
I+lThe link bandwidth of described second Business Stream, B are distributed in expression
I+lThe buffer size of described second Business Stream, B are distributed in expression
I+lSmaller or equal to described C
I+lWith the product of D, μ is the data transfer rate average of described second Business Stream.
The embodiment of the invention has following beneficial effect:
In the method and apparatus of the embodiment of the invention, at first obtain the variance of the Business Stream with first feature of current multiplexing transmission according to the transmission feature of the Business Stream that writes down current multiplexing transmission with first feature, there is being new new service flow to add fashionable with same characteristic features, consider the change characteristic slowly of transfer rate variance, directly will before the variance calculated as the variance that adds the Business Stream behind the new Business Stream, and utilize this variance to calculate to add the packet loss of the Business Stream behind the new Business Stream, and then carry out resource allocation or access control, therefore, avoid to obtain because complicated information source feature can't be obtained in the prior art technical problem of packet loss expression formula, reduced the realization difficulty of multiplexed resource distribution or access control.
Simultaneously,, also can find the method and apparatus of the embodiment of the invention, even when the multiplex stream number is big, also can in guaranteed qos, obtain spatial multiplexing gain by concrete emulation.
Description of drawings
Fig. 1 is the schematic flow sheet of the method for the embodiment of the invention;
Fig. 2 is the detailed process schematic diagram of the method for the embodiment of the invention;
Fig. 3-Fig. 4 is the simulation result figure of the method for the embodiment of the invention.
Embodiment
The above-mentioned utilization in the calculation expression that the Brownian bridge method obtains packet loss only need obtain the data transfer rate average μ and the data transfer rate variances sigma of Business Stream
2Behind these two variablees, can utilize this packet loss to carry out resource allocation and access control.
For video flowing,, just can obtain the data transfer rate average of this stream, but the data transfer rate variance of Business Stream just is not easy to have obtained as long as coded system has defined.For fear of statistical variance, the embodiment of the invention has proposed to infer by the record present packet loss method of variance.
As shown in Figure 1, the method for the embodiment of the invention comprises:
Above-mentioned B
iNot only relevant, also relevant with professional delay requirement with the buffer size of real system.If this business need queuing delay is less than D
Max, all overtime packets all will be dropped so, then in this case, and B
i≤ C
iD
Max
σ
2＝-2B
i(B
i+C
i-iμ)/(ilogL
i)
L
i+l＝exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, second Business Stream is for adding the Business Stream of the multiplexing transmission behind the described new Business Stream, C
I+lFor distributing to the link bandwidth of described second Business Stream, B
I+lFor distributing to the buffer size of described second Business Stream, B
I+l≤ C
I+lD
Max, certainly, in actual process, it is set to C
I+lD
MaxGet final product.
Because new Business Stream has identical feature with the Business Stream in first Business Stream, so its average is identical.
Be described below respectively with regard to resource allocation and access control below.
When carrying out resource allocation, calculate the C of the minimum that makes that following condition is set up exactly
I+l:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))≤δ
B
i+l≤C
i+lD
max
For finding the solution of above-mentioned mathematical problem, quite ripe algorithm has been arranged, be not described in detail at this.
And for the access control problem, judge exactly, satisfy packet loss requirement situation, and under current bandwidth restriction and buffer limits, can hold the business of newly coming in, just with the C in the following formula
I+lThe total link bandwidth C that the system of being set to can provide, B
I+lAfter the total buffer size B that the system of being set to can provide, judge whether following condition is set up:
exp(-2B(B+C-(i+l)μ)/((i+l)σ
2)))≤δ
B≤CD
max。
In the real system, the buffer size of forwarding unit has not been the bottleneck that influences system performance, so B mainly is subjected to the constraint of maximum queuing delay, and therefore, above-mentioned condition just changes into judges whether following formula is set up:
exp(-2CD
max(CD
max+C-(i+l)μ)/((i+l)σ
2)))≤δ
If set up, then expression can be admitted new Business Stream, otherwise can not admit new Business Stream.
Above-described method is applicable to that average is known, the variance condition of unknown.
If average and variance do not know that all the packet loss that write down under preceding two kinds of Business Stream number situations this moment gets final product, i.e. L
I-lAnd L
i.Find the solution data transfer rate average μ and data transfer rate variances sigma by following equation group then
2
The more detailed flow process that said method is carried out resource allocation is described below below.
As shown in Figure 2, comprising:
Whether step 21 has new Business Stream to be transmitted to add, if enter step 22, otherwise continues to wait for;
Step 22 is judged the current Business Stream transmission that whether exists, if enter step 25, otherwise enters step 23;
Step 23 according to existing method, for single Business Stream carries out resource allocation, enters step 24;
Step 24, the packet loss when preserving the transmission of single Business Stream returns step 21;
Step 25, the packet loss that once writes down before obtaining, and according to this packet loss calculating variances sigma
2
Step 26 is with this variances sigma
2Join the variance of the Business Stream (called after second Business Stream) that obtains after the current business flow as described new Business Stream to be transmitted, obtain the packet loss expression formula of second Business Stream;
Step 27 is that described second Business Stream carries out resource allocation according to this packet loss expression formula;
Step 28 writes down the packet loss in the second Business Stream transmission course, returns step 21.
Above-mentioned detailed process also is the explanation of carrying out with the known situation of average, for the unknown this situation of average, first and second Business Stream add fashionable, all according to existing method, for single Business Stream carries out resource allocation, and write down packet loss respectively, add fashionablely at the 3rd Business Stream, then can calculate variance and average (two unknown numbers, two equations according to two packet loss that write down previously, can find the solution), obtain packet loss then, and then carry out resource allocation or access control, obtain after this variance, the resource allocation of the Business Stream that adds later and access control are exactly the process of a circulation, do not describe in detail one by one at this.
The method of the embodiment of the invention is moved on the entity that carries out resource allocation or access control.For instance, at MBMS (Multimedia Broadcast Multicast System, multi-medium multi-packet broadcasting broadcasting) in the system, this entity may be MCE (Multi-cell/multicast Coordination Entity, many sub-districts/multicast cooperation entity), also may be BMSC (Broadcast-Multicast Service Center, multicast and broadcast service centre).In WLAN (WLAN (wireless local area network)), this entity may be WAP (wireless access point) (AP).On Internet, this entity may be a router.
It should be noted that how to obtain current packet loss situation, multiple means can be arranged, as described below:
Entity oneself carries out record.Because this entity is known the data of the Business Stream that enters, also know the resource of distribution, therefore can note the situation of packet loss.
By other entity records, send this entity then to.This situation is applicable to the situation of the entity separation of resource allocation entity and real transmission packet.Such as in MBMS (multi-medium multi-packet broadcasting broadcasting) system, resource allocation entity is MCE, but the entity of really giving out a contract for a project is on e-NodeB.So just need e-NodeB to note packet drop, and then feed back to MCE.
In order to embody the effect of the embodiment of the invention, carried out emulation, simulation parameter is as shown in the table.
Under above-mentioned simulated conditions, the packet loss that more different below resource allocation methods causes.At this, the qos requirement of setting video flowing is that maximum queuing delay is 320ms, and packet loss is less than 10
-3Packet loss mainly is to cause owing to queuing delay is long.
As shown in Figure 3, abscissa is the multiplex stream number among Fig. 3, ordinate is a packet loss, except the method with ON-OFF model modeling video flowing, additive method can satisfy the requirement of packet loss basically, still, when the multiplex stream number is big, Markov modeling and Brownian bridge are approximate, have all surpassed the packet loss of setting, and utilize the method (corresponding to the curve that has solid dot among Fig. 3) of the embodiment of the invention still can satisfy the requirement of packet loss.
Under above-mentioned simulated conditions, the spatial multiplexing gain of more different resource allocation methods below, as shown in Figure 4, abscissa is the multiplex stream number among Fig. 4, and ordinate is a spatial multiplexing gain, and spatial multiplexing gain is defined as follows:
(GBR×N-ABBR)/GBR×N
Wherein, N is the number of multiplex stream, and GBR is satisfying under the qos requirement, gives the resource of single traffic flow assignment.ABBR is satisfying under the identical qos requirement, and the resource that multiplex stream is distributed is tied.
As shown in Figure 4, when the multiplex stream number was big, the method for the embodiment of the invention (corresponding to the curve of the top among Fig. 4) can obtain very significantly spatial multiplexing gain advantage.
Statistic multiplexing method in a kind of LTE of being applied to (Long Term Evolution, Long Term Evolution) system also is provided in the embodiment of the invention, comprises:
EBM-SC (the multicast and broadcast service centre of evolution) is the multiplex stream Resources allocation, wherein comprises the MBMS Business Stream that block error rate BLER is different in this multiplex stream;
EBM-SC is the resource that multiplex stream is distributed by gateway Gateway notice MCE;
MCE is after knowing that eBM-SC is the resource of multiplex stream distribution, with eBM-SC is that the resource that multiplex stream is distributed becomes corresponding M BSFN (Multicast/Broadcast Single FrequencyNetwork, Multicast Broadcast Single Frequency Network) number of sub-frames, and send semi-static schedule information all evolution base station eNB to MCE subordinate, wherein comprise in this semi-persistent scheduling information:
The subframe index of MBSFN;
The sending order of MBMS Business Stream; And
The modulating-coding type of the ID of each MBMS Business Stream and employing.
Top semi-persistent scheduling information, comprised the required MBSFN number of sub-frames of all MBMS Business Streams, and the sending order of these Business Streams and modulating-coding type, and the modulating-coding type is by the error rate BLER requirement decision of MBMS Business Stream, the sending order of Business Stream then must be considered the modulating-coding type, should allow the identical Business Stream of modulating-coding type, send with adjacent order;
After eNB receives semi-persistent scheduling information, the MBMS Business Stream is sent to MBMS user, and with a dynamic scheduling information notifying MBMS user, this dynamic scheduling information comprises: the information of the subframe at the professional place of MBMS makes the user receive the MBMS business datum from the subframe of correspondence.
Under situation about determining in semi-persistent scheduling information, how eNB sends to MBMS user with the MBMS Business Stream, and with a dynamic scheduling information notifying MBMS user, has carried out detailed regulation in related specifications, is not described in detail at this.
Mention above, eBM-SC need be the resource that multiplex stream is distributed by gateway Gateway notice MCE, in specific embodiments of the invention, wherein, eBM-SC (the multicast and broadcast service centre of evolution) represents with ABBR (Aggregated Bundle Bit Rate) for the resource that multiplex stream is distributed, and beginning message informing MCE by session is that the process of the multiplex stream resource of distributing is as described below.
Suppose when Business Stream 1 begins to transmit that eBM-SC sends a session and begins message, and is as follows:
Session?Start(TMGI＝1，ABBR＝300kbps)
Wherein, TMGI (Temporary Mobile Group Identity, Temporary Mobile Group Identity) is the ID that is used to distinguish the MBMS Business Stream;
Subsequently, Business Stream 2 begins transmission, and eBM-SC sends a session and begins message, and is as follows:
Session?Start(TMGI＝1，TMGI＝2，ABBR＝400kbps)
Subsequently, Business Stream n begins transmission, and eBM-SC sends a session and begins message:
Session?Start(TMGI＝1，TMGI＝2，...，TMGI＝n，ABBR＝4000kbps)
Begin message by this session, it is the resource that multiplex stream is distributed that MCE can obtain eBM-SC, and carries out subsequent process.
In the prior art, included MBMS Business Stream all needs to have identical BLER (referring to R3-091300ABBR based statistical multiplexing solution for eMBMS and R3-091301 Service multiplexing and signaling for eMBMS) in the multiplex stream, but the technical scheme of prior art has following shortcoming:
Because included MBMS Business Stream all has identical BLER in the multiplex stream, therefore, the Business Stream of different B LER can't multiplexing transmission, under the certain situation of Business Stream number waiting for transmission, the number of Business Stream is all less than Business Stream number waiting for transmission in each multiplex stream, and the multiplexing spatial multiplexing gain that can bring, therefore, the method for prior art can't make spatial multiplexing gain maximize.
And utilize the method for the embodiment of the invention, the MBMS Business Stream that BLER is different can be multiplexed into transmission together, the number of Business Stream can equal Business Stream number waiting for transmission in the multiplex stream, and the number of Business Stream is many more in the multiplex stream, the spatial multiplexing gain that can bring is big more, therefore, with respect to prior art, the method for the embodiment of the invention can make spatial multiplexing gain maximize.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. a service integration processing method is characterized in that, comprising:
Obtain the transmission feature of first Business Stream, described first Business Stream is the Business Stream with first feature of current multiplexing transmission;
Calculate the variances sigma of described first Business Stream according to the transmission feature of described first Business Stream of above-mentioned record
2
Add fashionablely at new Business Stream, use described variances sigma with described first feature
2Obtain the packet loss expression formula of described second Business Stream as the variance of second Business Stream, described second Business Stream is the Business Stream that adds the multiplexing transmission that forms behind the described new Business Stream in described first Business Stream;
According to described packet loss expression formula described new Business Stream is carried out resource allocation or access control.
2. service integration processing method according to claim 1 is characterized in that, the transmission feature of described first Business Stream comprises:
The packet loss L of described first Business Stream
i, described first Business Stream data transfer rate average μ, distribute to the link bandwidth C of described first Business Stream
i, distribute to the buffer size B of first Business Stream
iNumber i with the described first Business Stream neutron Business Stream.
3. service integration processing method according to claim 2 is characterized in that the variance of described first Business Stream is-2B
i(B
i+ C
i-i μ)/(ilogL
i).
4. according to claim 2 or 3 described service integration processing methods, it is characterized in that described B
iSmaller or equal to described C
iWith the product of D, described D is the maximum queuing delay of the described first Business Stream requirement.
5. service integration processing method according to claim 2 is characterized in that, the packet loss expression formula of described second Business Stream is as follows:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, C
I+lThe link bandwidth of described second Business Stream, B are distributed in expression
I+lThe buffer size of described second Business Stream, B are distributed in expression
I+lSmaller or equal to described C
I+lWith the product of D, μ is the data transfer rate average of described second Business Stream.
6. according to claim 1,2 or 3 described service integration processing methods, it is characterized in that described data transfer rate average is determined according to coded system.
7. a service integration processing unit is characterized in that, comprising:
The feature acquisition module is used to obtain the transmission feature of first Business Stream, and described first Business Stream is the Business Stream with first feature of current multiplexing transmission;
The variance computing module is used for calculating according to the transmission feature of described first Business Stream of above-mentioned record the variances sigma of described first Business Stream
2
The packet loss acquisition module is used for adding at the new Business Stream with described first feature fashionable, uses described variances sigma
2Obtain the packet loss expression formula of described second Business Stream as the variance of second Business Stream, described second Business Stream is the Business Stream that adds the multiplexing transmission that forms behind the described new Business Stream in described first Business Stream;
Service Processing Module is used for according to described packet loss expression formula described new Business Stream being carried out resource allocation or access control.
8. service integration processing unit according to claim 7 is characterized in that, the transmission feature of described first Business Stream comprises:
The packet loss L of described first Business Stream
i, described first Business Stream data transfer rate average μ, distribute to the link bandwidth C of described first Business Stream
i, distribute to the buffer size B of first Business Stream
iNumber i with the described first Business Stream neutron Business Stream.
9. service integration processing unit according to claim 8 is characterized in that the variance of described first Business Stream is-2B
i(B
i+ C
i-i μ)/(ilogL
i).
10. according to Claim 8 or 9 described service integration processing unit, it is characterized in that described B
iSmaller or equal to described C
iWith the product of D, described D is the maximum queuing delay of the described first Business Stream requirement.
11. service integration processing unit according to claim 8 is characterized in that, the packet loss expression formula of described second Business Stream is as follows:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, C
I+lThe link bandwidth of described second Business Stream, B are distributed in expression
I+lThe buffer size of described second Business Stream, B are distributed in expression
I+lSmaller or equal to described C
I+lWith the product of D, μ is the data transfer rate average of described second Business Stream.
12., it is characterized in that described data transfer rate average is determined according to coded system according to claim 7,8 or 9 described service integration processing unit.
13. a service integration processing method is used for Long Term Evolution LTE system, it is characterized in that, comprising:
The eMB-SC of multicast and broadcast service centre of evolution is the multiplex stream Resources allocation, comprises the MBMS of the multimedia broadcast multicast system Business Stream that block error rate BLER is different in the described multiplex stream;
It is the resource that multiplex stream is distributed that described eMB-SC notifies many sub-districts/multicast cooperation entity MCE by gateway;
Described MCE is after knowing that described eBM-SC is the resource of multiplex stream distribution, with described eBM-SC is that the resource that multiplex stream is distributed becomes corresponding M BSFN number of sub-frames, and send semi-static schedule information all evolution base station eNB to MCE subordinate, wherein comprise in this semi-persistent scheduling information: the modulating-coding type that the sending order of the subframe index of MBSFN, described MBMS Business Stream, the ID of each described MBMS Business Stream and each described MBMS Business Stream adopt;
ENB carries out described multiplex stream transmission according to semi-persistent scheduling information, and with dynamic scheduling information notifying MBMS user, described dynamic scheduling information comprises: the information of the subframe at described MBMS Business Stream place.
14. service integration processing method according to claim 13 is characterized in that, the MBMS Business Stream that the modulating-coding type is identical sends with adjacent order.
15. service integration processing method according to claim 13 is characterized in that, it is the resource that multiplex stream is distributed that described eBM-SC begins the described MCE of message informing by session.
16., it is characterized in that described eMB-SC comprises the steps: for the multiplex stream Resources allocation according to claim 13,14 or 15 described service integration processing methods
Obtain the transmission feature of first Business Stream, described first Business Stream is the Business Stream with first feature of current multiplexing transmission;
Calculate the variances sigma of described first Business Stream according to the transmission feature of described first Business Stream of above-mentioned record
2
Add fashionablely at new Business Stream, use described variances sigma with described first feature
2Obtain the packet loss expression formula of described second Business Stream as the variance of second Business Stream, described second Business Stream is the Business Stream that adds the multiplexing transmission that forms behind the described new Business Stream in described first Business Stream;
According to described packet loss expression formula described new Business Stream is carried out resource allocation.
17. service integration processing method according to claim 16 is characterized in that, the packet loss L of described first Business Stream
i, described first Business Stream data transfer rate average μ, distribute to the link bandwidth C of described first Business Stream
i, distribute to the buffer size B of first Business Stream
iNumber i with the described first Business Stream neutron Business Stream.
18. service integration processing method according to claim 17 is characterized in that the variance of described first Business Stream is-2B
i(B
i+ C
i-i μ)/(ilogL
i).
19. service integration processing method according to claim 18 is characterized in that, described B
iSmaller or equal to described C
iWith the product of D, described D is the maximum queuing delay of the described first Business Stream requirement.
20. service integration processing method according to claim 19 is characterized in that, the packet loss expression formula of described second Business Stream is as follows:
exp(-2B
i+l(B
i+l+C
i+l-(i+l)μ)/((i+l)σ
2)))
Wherein, C
I+lThe link bandwidth of described second Business Stream, B are distributed in expression
I+lThe buffer size of described second Business Stream, B are distributed in expression
I+lSmaller or equal to described C
I+lWith the product of D, μ is the data transfer rate average of described second Business Stream.
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| Publication number | Publication date |
|---|---|
| JP5564350B2 (en) | 2014-07-30 |
| CN101958828B (en) | 2014-12-03 |
| JP2011024214A (en) | 2011-02-03 |
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