CN103874127B - The collocation method of uplink voice traffic interface-free resources - Google Patents
The collocation method of uplink voice traffic interface-free resources Download PDFInfo
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- CN103874127B CN103874127B CN201210532645.0A CN201210532645A CN103874127B CN 103874127 B CN103874127 B CN 103874127B CN 201210532645 A CN201210532645 A CN 201210532645A CN 103874127 B CN103874127 B CN 103874127B
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Abstract
This application discloses a kind of collocation method of uplink voice traffic interface-free resources, including：A, base station determine the primary election MCS modes of the speech data of the user according to the SINR of user uplink channel；The default transport block size table of b, the base station inquiry, knows the primary election MCS corresponding RB numbers when transport block size is default air interface transmission voice packet size L；Transport block size table described in c, the base station inquiry, knows the RB numbers corresponding minimum rank MCS when transport block size is more than L, downstream grants is carried out according to the minimum rank MCS.The just wrong probability of outflow can effectively be reduced using the present invention, voice quality is lifted.
Description
Technical field
The present invention relates to mobile communication technology, more particularly to a kind of collocation method of uplink voice traffic interface-free resources.
Background technology
In private network group system, the voice quality of up speaker is most important, directly influences the institute associated with the speaker
There is group, once speaker's voice quality is bad, all users for monitoring associated group can not receive clearly voice；Together
When, the voice of speaker is often crucial information in meeting, emergency event.Therefore, in private network, speaker's voice real-time is necessary
It is guaranteed.
Existing ascending voice modulating-coding（MCS）In way choice scheme, mainly according to Signal to Interference plus Noise Ratio（SINR）
To select the MCS for uploading speech data, there is gain when the processing mode is to ps domain data service, still, for speech business
For, it is undesirable.Concrete analysis is as follows：
At present, the method for selection speech business interface-free resources mainly comprises the steps：
Step 1, the Signal to Interference plus Noise Ratio according to user（SINR）, select the MCS modes of user.
Step 2, the data to be transferred amount of eating dishes without rice or wine according to user（BSR）With the MCS selected in step 1, corresponding resource is selected
Block（RB）Number.
The RB numbers that this step is selected, will match with the actual channel quality of user.
Step 3, according to the RB numbers selected in step 2, according to 2,3,5 principles, it is determined that the RB resources of final air interface transmission；Press
Downstream grants are carried out according to the MCS.
This step is the RB for determining finally to use using described 2,3,5 principles in order to ensure voice quality.According to existing association
View, described 2,3,5 principles be distribution RB numbers of eating dishes without rice or wine must be satisfaction 2m3n5k, wherein, m, n, k are nonnegative integer.According to 2,3,
RB numbers selected by 5 principles are necessarily more than or equal to the RB numbers selected in step 2, that is to say, that the RB of final air interface transmission
Number of resources is more than the number of resources required for actual channel quality, so, has occurred as soon as the problem of resource block is wasted.
In actual applications, actual channel is not matched that when identified MCS may be with uplink in step 1,
The situation of channel variation is likely to occur, and the ability that high-order MCS resistance channel qualities are deteriorated is poor, that is to say, that in MCS
During through ability close to SINR, once channel quality is deteriorated, the reduction of its demodulation ability will result directly in and just pass mistake, influences language
Sound quality, and then have influence on group.Further, spread out of originally after mistake, it is necessary to retransmitted, this not only has influence on voice industry
The real-time of business cannot be guaranteed；But also waste the interface-free resources needed for retransmitting.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of collocation method of uplink voice traffic interface-free resources,
This method can effectively reduce the just wrong probability of outflow, lift voice quality.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of collocation method of uplink voice traffic interface-free resources, including：
A, base station determine the primary election MCS modes of the speech data of the user according to the SINR of user uplink channel；
The default transport block size table of b, the base station inquiry, it is default in transport block size to know the primary election MCS
Corresponding RB numbers during air interface transmission voice packet size L；
Transport block size table described in c, the base station inquiry, knows that the RB numbers are corresponding when transport block size is more than L
Minimum rank MCS, downstream grants are carried out according to the minimum rank MCS.
In summary, the collocation method of uplink voice traffic interface-free resources proposed by the present invention, is not increasing resource overhead
In the case of, MCS exponent numbers are lowered, increase the demodulation ability of base station, the just wrong probability of outflow can be effectively reduced, lift voice matter
Amount.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in further detail.
The present invention core concept be：It is higher to the decoding capability of poor channel in view of low order MCS, the present invention it is determined that
During the MCS exponent numbers of uplink, in the case where not increasing interface-free resources, using the MCS of relatively low order, effectively to reduce just
Wrong probability is spread out of, voice quality is lifted, and the waste of resource can be prevented effectively from.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one, as shown in figure 1, the embodiment mainly includes：
Step 101, base station determine the primary election MCS side of the speech data of the user according to the SINR of user uplink channel
Formula.
Implementing with the step 1 in above-mentioned existing method for this step, will not be repeated here.
The default transport block size table of step 102, the base station inquiry（transport block size table）, obtain
Know the primary election MCS resource block RB numbers corresponding when transport block size is default air interface transmission voice packet size L.
In this step, the air interface transmission voice packet size L can be determined using existing method, can also use following preferable sides
Method is realized.
It is preferred that the L, the Ldata can be set to be in each sampling period according to L=Ldata+Lhead+Lmce
The amount of voice data of generation；The Lhead is the packet header length of the data link layer of the user, and the Lmce is default
Mac layers of control information length.
It should be noted that in actual applications, according to the own characteristic of speech business, voice service rate is fixed
, the data volume that speech business is produced within the sampling period is stable, and voice packet reaches the time interval of data link layer
It is stable, so the Ldata and Lhead value is fixed, and then the L is also fixed value.
Here, the Lmce can determine suitable value by emulating, it is preferred that could be arranged to the Mac controls most grown
Information processed（MCE）Length, so, all MCE transmission situation can be covered.
The transport block size table is table specified in existing protocol, and it comprises the corresponding each rank of different transport block sizes
MCS and its corresponding demodulation upper limit are SINR.
Transport block size table described in step 103, the base station inquiry, knows that the RB numbers are more than in transport block size described
Corresponding minimum rank MCS during L, downstream grants are carried out according to the minimum rank MCS.
In this step, using the RB numbers, when transport block size is more than L, corresponding minimum rank MCS is used as downstream grants
MCS, to select low order MCS to modulate as far as possible, so, the MCS of this step selection will be less than in step 101 as a rule
The MCS of primary election.Here, the characteristics of making full use of low order MCS strong relative to the ability that high-order MCS resists channel quality variation, only
SINR when wanting SINR during ultimate authority required by MCS to be not higher than transmission, just can correctly be demodulated so that during transmission data
SINR decline, base station still has higher probability to demodulate to come, so as to can more tolerate the deterioration of channel quality, reduce just biography
The probability of mistake, and then lift the quality of voice.Meanwhile, do not increase the expense of interface-free resources in whole process yet.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of collocation method of uplink voice traffic interface-free resources, it is characterised in that including：
A, base station determine the primary election MCS modes of the speech data of the user according to the Signal to Interference plus Noise Ratio SINR of user uplink channel；
The default transport block size table transport block size table of b, the base station inquiry, know the primary election
MCS corresponding resource block RB numbers when transport block size is default air interface transmission voice packet size L；
Transport block size table described in c, the base station inquiry, knows the RB numbers corresponding minimum when transport block size is more than L
Rank MCS, downstream grants are carried out according to the minimum rank MCS.
2. it is according to the method described in claim 1, it is characterised in that according to L=Ldata+Lhead+Lmce, the L is set, described
Ldata is the amount of voice data produced in each sampling period；The Lhead is long for the packet header of the data link layer of the user
Degree, the Lmce is default Mac layers of control information length.
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| CN103874127B true CN103874127B (en) | 2017-09-01 |
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| CN107800507B (en) * | 2016-08-31 | 2020-11-13 | 成都鼎桥通信技术有限公司 | MCS selection method and equipment for voice service scheduling in cluster system |
| CN113141578B (en) * | 2020-01-19 | 2022-06-10 | 大唐移动通信设备有限公司 | MCS (modulation and coding scheme) adjusting method and device for cluster group call service |
| CN112153677A (en) * | 2020-09-08 | 2020-12-29 | 北京长焜科技有限公司 | Uplink AMC optimization method for small telephone traffic scene |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102480761A (en) * | 2010-11-26 | 2012-05-30 | 北京大学 | Method for determining multicast server (MCS) in long-term evolution scheduling |
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| CN102480761A (en) * | 2010-11-26 | 2012-05-30 | 北京大学 | Method for determining multicast server (MCS) in long-term evolution scheduling |
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