CN105979495A - Method for improving call quality, wireless network controller and core network - Google Patents
Method for improving call quality, wireless network controller and core network Download PDFInfo
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- CN105979495A CN105979495A CN201610502502.3A CN201610502502A CN105979495A CN 105979495 A CN105979495 A CN 105979495A CN 201610502502 A CN201610502502 A CN 201610502502A CN 105979495 A CN105979495 A CN 105979495A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/12—Access point controller devices
Abstract
The embodiment of the invention discloses a method for improving call quality. The method is used for improving the call quality in a voice call. According to the embodiment, the method comprises the steps that: when signal quality is less than a first preset threshold, a RNC (Wireless Network Controller) receives RAB (Wireless Access Bearing) assignment information sent by the core network, wherein the RAB assignment information includes a voice rate set; if the highest voice rate in the voice rate set is greater than a second preset threshold, the RNC configures the voice rate which is less than or equal to the second preset threshold for UE (User Equipment); and the RNC transcodes the received first voice data and then transmits the transcoded data. The embodiment of the invention also discloses the RNC.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of improve the method for speech quality, wireless network control
Device processed and core net.
Background technology
Transcoder Free Operation (TrFO, Transcoder Free Operation) technology is traditional for solving
Twice audio coding/decoding problem present in end-to-end calling procedure.Traditional UE (subscriber equipment,
User Equipment) in-UE calling procedure, the end-to-end procedure from calling UE to called UE is entered
Twice audio coding/decoding of row.When calling UE and called UE all use identical AMR
During (Adaptive Multi-Rate, AMR) rate set, apply TrFO technology, it is possible in calling UE
And between called UE, directly transmit compressed speech frame, thus only enter in calling UE and called UE
Row first encoding/decoding, solves in tradition UE-UE calling procedure because repeating coding-decoding operation to voice letter
Number infringement caused, thus improve the quality of voice signal, enable users to access more preferable call experience.
TrFO technology needs local terminal to keep consistent with the voice rate of the UE of opposite end, it is to avoid introduces single-pass and asks
Topic.In prior art, when UE is in low signal-to-noise ratio environment, need heavily to be fitted on low rate to obtain more preferably
Voice quality experience and lower call drop probability.Therefore, speed governing based on TrFO need local terminal UE and
Opposite end UE is carried out together, but this process complete to need about hundred milliseconds of times, and when opposite end speed governing is lost
When losing, local terminal UE just cannot use and the speed of wireless environment coupling, causes under low signal-to-noise ratio environment,
More preferable voice quality cannot be obtained experience.
Summary of the invention
Embodiments provide and a kind of improve the method for speech quality, radio network controller and core
Heart net, for improving the quality of user speech call.
Technical solution of the present invention is applied to audio communication system, it may include user equipment (UE), wireless network control
Device RNC processed and core net CN, embodiment of the present invention first aspect provides a kind of side improving speech quality
Method, it may include: when signal quality is less than the first preset threshold value, radio network controller (RNC) receives core
The RAB RAB assignment message that heart net sends, this RAB assignment message includes voice rate collection
Close；If the highest voice rate in this voice rate set is more than the second preset threshold value, then this RNC is for using
The voice rate of family equipment UE configuration is less than or equal to this second preset threshold value；This RNC to receive first
Speech data transmits after carrying out transcoding.
In embodiments of the present invention, when signal quality is less than the first preset threshold value, radio network controller
RNC receives the RAB RAB assignment message that core net sends, and this RAB assignment message includes
Voice rate set；If the highest voice rate in this voice rate set is more than the second preset threshold value, then
This RNC is that the voice rate of user equipment (UE) configuration is less than or equal to this second preset threshold value, this RNC
Transmit after the first speech data received is carried out transcoding；RNC can directly configure the voice rate of UE,
Lack radio bearer weight flow journey of once eating dishes without rice or wine, thus reduced the call drop probability of user, improve user's communication
Voice quality.
In conjunction with embodiment of the present invention first aspect, in the first possibility of the first aspect of the embodiment of the present invention
Implementation in, the method may also include that this RNC to this core net send speed governing request, be used for adjusting
The voice rate of this core net whole is the size of the voice rate of this UE.
In embodiments of the present invention, after radio network controller is UE configuration voice rate, it is also possible to
Core net sends speed governing request, and the voice rate of voice rate with subscriber equipment for adjusting core net is protected
Hold consistent.
In conjunction with embodiment of the present invention first aspect, the first of the first aspect of the embodiment of the present invention is possible
Implementation, in the implementation that the second of the first aspect of the embodiment of the present invention is possible, this RNC
Transmit after the first speech data received is carried out transcoding, it may include: this RNC receives this core net and sends
Downstream voice data；This RNC carries out transcoding to this downstream voice data, the downlink voice after this transcoding
The voice rate of data is identical with the voice rate of this UE；This RNC is by the downstream voice data after transcoding
Transmit to this UE.
In embodiments of the present invention, RNC transmits after the first speech data received is carried out transcoding, does one
Individual refinement, understands and receives, transcoding and the flow process of transmission, for embodiments providing one specifically
The scheme of individual feasibility.
In conjunction with embodiment of the present invention first aspect, the first of the first aspect of the embodiment of the present invention is possible
Implementation, in the third possible implementation of the first aspect of the embodiment of the present invention, this RNC
Transmit after the first speech data received is carried out transcoding, it may include: this RNC receives what this UE sent
Upstream voice data；This RNC carries out transcoding to this upstream voice data, the ascending voice number after this transcoding
According to voice rate identical with the voice rate of this core net；This RNC is by the upstream voice data after transcoding
To this core network.
In embodiments of the present invention, RNC transmits after the first speech data received is carried out transcoding, does one
Individual refinement, understands specifically and receives, and transcoding and the flow process of transmission are another for embodiments providing
The scheme of one feasibility.
In conjunction with embodiment of the present invention first aspect, the first of the first aspect of the embodiment of the present invention is possible
Implementation is to the third possible implementation, and the 4th kind of first aspect in the embodiment of the present invention can
Can implementation in, the method may also include that this RNC receive this core net send speed governing successfully believe
Breath；The second speech data received is transmitted by this RNC.
In embodiments of the present invention, when, after core net speed governing success, speed governing successful information being sent to RNC,
After RNC receives this information, then the speech data received, avoid the need for transcoding, can directly carry out
Transmission, has saved regular hour and Internet resources.
In conjunction with embodiment of the present invention first aspect, the first of the first aspect of the embodiment of the present invention is possible
Implementation is to the third possible implementation, in the 5th kind of possibility of the first aspect of the embodiment of the present invention
Implementation in, the method may also include that this RNC receive this core net send speed regulation failure information；
This RNC transmits after the 3rd speech data received is carried out transcoding.
In embodiments of the present invention, when, after core net speed regulation failure, speed regulation failure information being sent to RNC,
After RNC receives this information, then the speech data received, also it is intended to carry out transcoding, just may be used after transcoding
With transmission.
Embodiment of the present invention second aspect provides a kind of method improving speech quality, it may include: work as signal
When quality is less than the first preset threshold value, core net sends RAB to radio network controller (RNC)
RAB assignment message, this RAB assignment message includes voice rate set；This core net receives this RNC
The speed governing request sent；This core net is asked according to this speed governing, adjusts the voice rate of this core net；If
This core net successfully adjusts the size of the voice rate that voice rate is UE of this core net, then this core net
Speed governing successful information is sent to this RNC.
In embodiments of the present invention, when signal quality is less than the first preset threshold value, core net is to wireless network
Network controller RNC sends RAB RAB assignment message, and this RAB assignment message includes voice
Speed set；This core net receives the speed governing request that this RNC sends；If this core net please according to this speed governing
Ask, successfully adjust the size of the voice rate that voice rate is UE of this core net, then this core net is to this
RNC sends speed governing successful information.When, after speed governing success, UE, RNC and core net keep same language
Velocity of sound rate, the speech data of transmission, without transcoding, can directly transmit.
In conjunction with embodiment of the present invention second aspect, in the first possibility of the second aspect of the embodiment of the present invention
Implementation in, the method also includes: if this core net adjust this core net voice rate failure,
Then this core net sends speed regulation failure information to this RNC.
In embodiments of the present invention, after core net speed regulation failure, send speed regulation failure information to RNC,
Do a notice to RNC, then receive speech data and still must carry out transcoding and transmit again.
The embodiment of the present invention third aspect provides a kind of radio network controller, has realization corresponding to above-mentioned
The function of the method for the raising speech quality that first aspect provides.This function can be realized by hardware, also
Corresponding software can be performed by hardware to realize.This hardware or software include one or more and above-mentioned merit
The module that energy is corresponding.
Embodiment of the present invention fourth aspect provides a kind of core net, has realization corresponding to above-mentioned second aspect
The function of the method for the raising speech quality provided.This function can be realized by hardware, it is also possible to passes through
Hardware performs corresponding software and realizes.This hardware or software include one or more corresponding with above-mentioned functions
Module.
The embodiment of the present invention the 5th aspect provides a kind of radio network controller, it may include: transceiver, place
Reason device, this transceiver and this processor are connected by bus；
This transceiver, for when signal quality is less than the first preset threshold value, receiving the nothing that core net sends
Line access bearer RAB assignment message, this RAB assignment message includes voice rate set；
This processor, if the highest voice rate in this voice rate set is more than the second preset threshold value,
Then the voice rate for user equipment (UE) configuration is less than or equal to this second preset threshold value；To the first language received
Sound data are transmitted after carrying out transcoding.
The embodiment of the present invention the 6th aspect provides a kind of core net, it may include: transceiver, processor, should
Transceiver and this processor are connected by bus；
This transceiver, for receiving the speed governing request that this RNC sends；If this core net successfully adjusts this core
The voice rate of heart net is the size of the voice rate of UE, then this core net sends speed governing one-tenth to this RNC
Merit information；
This processor, for adjusting the voice rate of this core net according to this speed governing request.
The embodiment of the present invention the 7th aspect provides a kind of storage medium, it should be noted that this technology
Part that prior art is contributed by scheme the most in other words or this technical scheme all or part of
Can embody with the form of software product mouth, this computer software product is stored in a storage medium,
For saving as the computer software instructions used by the said equipment, its comprise for perform above-mentioned first aspect,
Second aspect, the third aspect or fourth aspect are the program designed by equipment.
This storage medium includes: USB flash disk, portable hard drive, read only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic
The various medium that can store program code such as dish or CD.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
In embodiments of the present invention, when signal quality is less than the first preset threshold value, radio network controller
RNC receives the RAB RAB assignment message that core net sends, described RAB assignment message bag
Include voice rate set；If the highest voice rate in described voice rate set is more than the second preset threshold value,
The most described RNC is that the voice rate of user equipment (UE) configuration is less than or equal to described second preset threshold value, institute
State after RNC carries out transcoding to the first speech data received and transmit；RNC can directly configure the language of UE
Velocity of sound rate, has lacked radio bearer weight flow journey of once eating dishes without rice or wine, thus has reduced the call drop probability of user, improved
The voice quality of user's communication.
Accompanying drawing explanation
In order to be illustrated more clearly that embodiment of the present invention technical scheme, below will be to embodiment and prior art
In description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creativeness
On the premise of work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is Circuit Service cutting off rate and the relation schematic diagram of signal to noise ratio in the embodiment of the present invention；
Fig. 2 is Circuit Service Mean Opinion Score and the relation schematic diagram of signal to noise ratio in the embodiment of the present invention；
Fig. 3 is Block Error Rate and the relation schematic diagram of signal to noise ratio in the embodiment of the present invention；
Fig. 4 is the know-why schematic diagram of Transcoder Free Operation in the embodiment of the present invention；
Fig. 5 is schematic flow sheet based on Transcoder Free Operation speed governing in the embodiment of the present invention；
Fig. 6 a is flow process signal based on AMR control technology speed governing in the embodiment of the present invention
Figure；
Fig. 6 b is that in the embodiment of the present invention, another flow process based on AMR control technology speed governing is shown
It is intended to；
Fig. 7 is an embodiment schematic diagram of the method improving speech quality in the embodiment of the present invention；
Fig. 8 is another embodiment schematic diagram of the method improving speech quality in the embodiment of the present invention；
Fig. 9 is an embodiment schematic diagram of radio network controller in the embodiment of the present invention；
Figure 10 is another embodiment schematic diagram of radio network controller in the embodiment of the present invention；
Figure 11 is another embodiment schematic diagram of radio network controller in the embodiment of the present invention；
Figure 12 is another embodiment schematic diagram of radio network controller in the embodiment of the present invention；
Figure 13 is an embodiment schematic diagram of core net in the embodiment of the present invention；
Figure 14 is another embodiment schematic diagram of radio network controller in the embodiment of the present invention；
Figure 15 is another embodiment schematic diagram of core net in the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of method improving speech quality and radio network controller, use
In the quality improving user speech call.
In order to make those skilled in the art be more fully understood that the present invention program, real below in conjunction with the present invention
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present invention be clearly and completely described, it is clear that
Described embodiment is only the embodiment of a present invention part rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, all should belong to the scope of protection of the invention.
In the prior art, the solution during TrFO technology decreases the end-to-end calling procedure of traditional UE-UE
Determine in traditional UE-UE calling procedure because repeating the infringement that voice signal is caused by coding-decoding operation, improved
The quality of voice signal, enables users to access more preferable call experience.TrFO technology needs local terminal and right
The voice rate of the UE of end keeps consistent, it is to avoid introduce single-pass problem.AMR controls
(Adaptive Multi-Rate Control, AMRC) technology refers to wireless network control in AMR calling procedure
Device (Radio Network Controller, RNC) or UE select dynamically along with the change of wireless environment
Select the speed that AMR controlled rate is concentrated.
As it is shown in figure 1, from the point of view of combining the real data of emulation data and commercial net, signal to noise ratio is the lowest, CS
The call drop probability of business is the highest.As in figure 2 it is shown, under Low SNR, the MOS (mean of low speed
Opinion score, Mean Opinion Score) point higher.Therefore, when UE under low signal-to-noise ratio environment (the most logical
The most described weak covering), it is proposed that use lower voice rate to obtain more preferable voice quality and experience；Meanwhile,
As it is shown on figure 3, the AMR voice of low speed can use less code word, the descending of acquisition 1～2dB to cover
Lid gain, thus obtain lower call drop probability.
The principle of prior art is as shown in Figure 4.Schematic flow sheet based on TrFO speed governing as it is shown in figure 5,
When the radio network controller (Radio Network Controller, RNC) of opposite end receives the RNC of local terminal
AMR rate adjustment request time；UE to opposite end sends transformat combination (TFC, Transport
Format Combination) adjust message；If the speed governing response waiting timer time of the RNC of opposite end
The most do not receive the TFC adjustment failed message that the UE of opposite end sends, then explanation speed adjusts successfully；To
The RNC transmission rate of local terminal adjusts and confirms message.When the UE speed of opposite end adjusts unsuccessfully, UE is just
The voice rate with wireless network compatible cannot be used, cause under low signal-to-noise ratio environment, it is impossible to obtain more
Voice quality is experienced well.It is also possible in speed regulation process, due to wireless environment or UE reason, in speed governing
Do not receive the message of TFC speed regulation failure in the response waiting timer time, local terminal UE and right can be caused
End UE fails simultaneously speed governing and introduces single-pass problem.
AMRC technology speed governing signaling process is as shown in figure 6 a and 6b.When being in low signal-to-noise ratio environment, even if
By Rate CONTROL message success speed governing, but because down channel code word does not change, it is impossible to
Obtain more preferable descending covering gain.Radio bearer (Radio Bearer, RB) weight flow journey can be passed through,
By downstream arrangements to less channel code word, such as heavily join from AMR12.2kbps (descending use SF128)
To AMR5.9/4.75kbps (descending use SF256), the covering gain of 1～2dB can be obtained.When user exists
When low signal-to-noise ratio environment accesses, configuring according to CN, arrowband AMR the most first sets up AMR12.2kbps, then
Heavily it is fitted on low rate 5.9/4.75kbps, then carries out RB weight flow journey after accessing, but, this flow process of eating dishes without rice or wine is lost
Lose or because this flow process causes user's soft handover not in time, all can cause conversation loss.
In technical solution of the present invention, when speed regulation failure, the RNC of local terminal can also be directly local terminal
UE configuration is suitable for the voice rate of local terminal UE, and the UE of opposite end can also be configured suitable by the RNC of opposite end
Close the voice rate of opposite end UE, and the voice rate of the voice rate of the opposite end UE configured and local terminal keeps
It is identical, then, the UE of local terminal and the voice rate of the UE of opposite end keep consistent, it is to avoid introducing single-pass
Problem.The invention provides a kind of voice quality improving weak covering (low signal-to-noise ratio) scene experience and
Call drop probability problem, RNC replaces CN to carry out coding Encoder and the decoding Decoder function of voice,
RNC be need not consistent with CN rate consulation, directly set up/can heavily join lower voice speed for UE
Rate.
The most by way of example technical solution of the present invention is specifically described, as it is shown in fig. 7, be
The embodiment of the present invention improves an embodiment schematic diagram of the method for speech quality, including:
701, when signal quality is less than the first preset threshold value, RAB RAB is assigned by core net
Message transmission includes voice rate set to RNC, RAB assignment message；
Step 701 can include step a and b:
When a, signal quality are less than the first preset threshold value, core net sends to radio network controller (RNC)
RAB RAB assignment message, RAB assignment message includes voice rate set；
In embodiments of the present invention, when signal quality is less than the first preset threshold value, core net is to wireless network
Controller RNC sends RAB RAB assignment message, and RAB assignment message includes voice rate
Set.Signal quality is under weak covering scene or low signal-to-noise ratio less than the first preset threshold value, i.e. UE
In environment, the first preset threshold value here is an empirical value, can do corresponding tune according to reality application
Whole.Below several scenes judging signal quality are carried out a brief description, as follows:
Idle (idle) state accesses: determine RRC connection request (RRC CONNECTION REQUEST)
Whether the signal quality (Measured results on RACH) carried in message is less than the first preset threshold value；
CELL-DCH (CELL Dedicated Channel, cell private channel) state accesses: determine thing
Whether the signal quality in the measurement report of part/periodic report is less than the first preset threshold value；
CELL-FACH (CELL forward access channel, cell forward access channel) state accesses:
Determine that INITIAL DIRECT TRANSFER/UPLINK DIRECT TRANSFER is (the most direct
Transmission/Uplink Direct Transfer) signal quality (Measured results on RACH) that carries in message
Whether less than the first preset threshold value；
URA (system)-PCH/CELL (community)-PCH (PCH, Paging Channel, believe by paging
Road) state access: determine that the signal quality carried in CELL UPDATE (subdistrict position renewal) message is
No it is less than the first preset threshold value.
It should be noted that judge that whether signal quality is less than the first preset threshold value, it may include but be not limited to
This several ways of above-mentioned offer.Usually said weak overlay environment, is that signal intensity (RSSI) is less than
Can the scope of use value.The weak coverage of mobile definition is RSSI <-75dBm, and telecommunications is defined as
RSSI<-65dBm.Or, weak covering is that area coverage is big required for base station, and base station spacing is excessive, or
Person's building blocks and causes borderline region signal more weak.Weak covering is typically all at Rxlev (Received
Signal Level, received signal level) less than-90dBm.Should be understood that signal quality here include but
Being not limited to by channel quality, the parameter such as signal to noise ratio and service quality indicates.
Here the voice rate set that RAB assignment message includes, can be broadband voice speed set, also
It can be narrowband speech speed set.Exemplary, when user accesses at low signal-to-noise ratio environment, according to
The configuration of core net, it is assumed that voice rate set is arrowband AMR set, for { 12.2kbps} (lower enforcement
With SF128).It should be noted that voice rate set is not equal to empty set, including at least one voice speed
Rate, does not limits.
B, when signal quality less than the first preset threshold value time, radio network controller (RNC) receive core net
The RAB RAB assignment message sent, RAB assignment message includes voice rate set；
In embodiments of the present invention, when signal quality is less than the first preset threshold value, radio network controller
RNC receives the RAB RAB assignment message that core net sends, and RAB assignment message includes language
Velocity of sound rate set.Here voice rate set, can be broadband voice speed set, it is also possible to be narrow
Band voice rate set.
Exemplary, the RAB assignment message that RNC receives includes voice rate set, can be arrowband
AMR gathers, for { 12.2kbps}.
If the highest voice rate in 702 voice rate set is more than the second preset threshold value, then RNC is
The voice rate of user equipment (UE) configuration is less than or equal to the second preset threshold value；
In embodiments of the present invention, the RAB RAB assignment that RNC reception core net sends disappears
Breath, after RAB assignment message includes voice rate set, if the highest voice speed in voice rate set
Rate is more than the second preset threshold value, then RNC is that the voice rate of user equipment (UE) configuration is less than or equal to second
Preset threshold value.
If it should be noted that what RAB assignment message included is that the type of voice rate set is different, that
, the second corresponding preset threshold value is the most different.If it is assumed that what RAB assignment message included is narrowband speech
Speed set, then, the second preset threshold value is probably 5.9kbps or 4.75kbps (descending use SF256)；
If what RAB assignment message included is broadband voice speed set, then, the second preset threshold value is probably
6.6kbps。
Exemplary, connecing step 703, arrowband AMR gathers, for 12.2kbps}, then more than 5.9kbps,
So, RNC is less than or equal to 5.9kbps at the voice rate that UU mouth is UE configuration, it is generally the case that
Voice rate for UE configuration is 5.9kbps, but does not the most do concrete restriction.For UE configuration
Voice rate is theoretically the lowest more good, because according in the figure shown in Fig. 2, low voice rate obtains
Mean Opinion Score higher.
703, RNC transmits after the first speech data received is carried out transcoding；
In embodiments of the present invention, RNC transmits after the first speech data received is carried out transcoding；Specifically
, it may include:
(1) RNC receives the downstream voice data that core net sends；Downstream voice data is carried out by RNC
Transcoding, the voice rate of the downstream voice data after transcoding is identical with the voice rate of UE；RNC will turn
Downstream voice data after Ma transmits to UE；
Or,
(2) RNC receives the upstream voice data that UE sends；Upstream voice data is carried out turning by RNC
Code, RNC carries out transcoding to the upstream voice data receiving UE transmission, the upstream voice data after transcoding
Voice rate identical with the voice rate of core net；RNC by the upstream voice data after transcoding to core
Net transmission.
It should be noted that transcoding here includes coding/decoding, in this process, encode and decode
Flow process all exists.
Exemplary, (1) is it is assumed that what RNC received here is the downstream voice data that sends of core net；
The voice rate of core net is 12.2kbps, but, the voice rate of UE is 5.9kbps, then, RNC
This downstream voice data need to be carried out transcoding, 12.2kbps transcoding be 5.9kbps, so, RNC is again
Being transmitted to UE by 5.9kbps after transcoding, UE just can identify the speech data of 5.9kbps, complete
The communication of data.
(2) it is assumed that here RNC receive be UE send upstream voice data；The voice speed of UE
Rate is 5.9kbps, and the voice rate of core net is 12.2kbps, then, RNC need to be by this ascending voice
Data carry out transcoding, 5.9kbps transcoding be 12.2kbps, and so, RNC is again by the 12.2kbps after transcoding
To core network, core net just can identify the speech data of 12.2kbps, completes the communication of data.
It should be noted that above-mentioned illustrating is to illustrate with the voice rate of arrowband, broadband
Voice rate is also same reason, and here is omitted.
704, speed governing request is sent to core net by RNC；
In embodiments of the present invention, step 704 can include step c and d:
C, RNC send speed governing request to core net, for adjusting the language that voice rate is UE of core net
The size of velocity of sound rate；
In embodiments of the present invention, RNC sends speed governing request (Rate Control) to core net, is used for
Adjust the size of the voice rate that voice rate is UE of core net.It should be noted that in TrFO merit
When can open, just need to initiate speed governing request to core net.
D, core net receive the speed governing request that RNC sends；
In embodiments of the present invention, RNC is after core net sends speed governing request, and core net receives RNC
The speed governing request sent.
705, core net is asked according to speed governing, adjusts the voice rate of core net；
In embodiments of the present invention, after core net CN receives the speed governing request that RNC sends, according to tune
Speed request, adjusts the voice rate of core net.
If 706 core net successfully adjust the size of the voice rate that voice rate is UE of core net, then
Speed governing successful information is sent to RNC by core net；
In embodiments of the present invention, step 706 can include step e and f:
If e core net successfully adjusts the size of the voice rate that voice rate is UE of core net, then core
Heart net sends speed governing successful information to RNC；
In embodiments of the present invention, if core net is asked according to speed governing, successfully adjust the voice speed of core net
Rate is the size of the voice rate of UE, then core net sends speed governing successful information to RNC.
Exemplary, the IU mouth of core net supports the speed governing request that RNC sends, and wraps in this speed governing request
Include the voice rate of UE, so, the voice rate of self is adjusted to the voice speed that UE supports by core net
The size of rate.That is, core net by voice rate after 12.2kbps is adjusted to 5.9kbps, to RNC
Send speed governing successful information.
F, RNC receive the speed governing successful information that core net sends；
In embodiments of the present invention, core net is after RNC sends speed governing successful information, and RNC receives core
The speed governing successful information that heart net sends.
707, the second speech data received is transmitted by RNC.
In embodiments of the present invention, the second speech data received is transmitted by RNC.Comprise the steps that RNC
Receive the speech data that core net sends, this speech data is directly sent to UE.Or, RNC connects
Receive the speech data that UE sends, this speech data is directly sent to core net.Need not move through transcoding behaviour
Make, because the voice rate of UE, RNC and core net is through the adjustment of above-mentioned steps, kept consistent.
It should be noted that step 704-707 is optional step, in actual applications, can be according to specifically
Demand determine the need for perform.
In embodiments of the present invention, under weak overlay environment, RNC receives the voice rate that core net sends
Set, when the highest voice rate in voice rate set is more than the second preset threshold value, then RNC user sets
The voice rate of standby UE configuration is less than or equal to the second preset threshold value.As a example by narrowband speech, RNC is permissible
Directly set up, for UE, the speed (descending employing SF256 code word) that AMR is 5.9kbps, compare and directly build
Vertical AMR12.2kbps, can obtain the covering gain of 1～2dB, thus obtain more preferable voice quality and experience
Lower call drop probability.Further, RNC can also send speed governing request to CN so that UE,
The voice rate of RNC with CN keeps consistent, is all the low voice rate of UE, both ensure that call
Signal quality, time again because speech data is transmitted by RNC, it is not necessary to transcoding, has saved time and network
Resource.
As shown in Figure 8, for the embodiment of the present invention improves another enforcement illustration of the method for speech quality
It is intended to, including:
801, when signal quality is less than the first preset threshold value, RAB RAB is assigned by core net
Message transmission includes voice rate set to RNC, RAB assignment message；
Step 801 can include step a and b:
A, when signal quality less than the first preset threshold value time, core net is sent out to radio network controller (RNC)
Sending RAB RAB assignment message, RAB assignment message includes voice rate set；
B, when signal quality less than the first preset threshold value time, radio network controller (RNC) receive core net
The RAB RAB assignment message sent, RAB assignment message includes voice rate set.
If the highest voice rate in 802 voice rate set is more than the second preset threshold value, then RNC is
The voice rate of user equipment (UE) configuration is less than or equal to the second preset threshold value；
803, RNC transmits after the first speech data received is carried out transcoding；
804, speed governing request is sent to core net by RNC；
Step 804 can include step c and d:
C, RNC send speed governing request to core net, for adjusting the language that voice rate is UE of core net
The size of velocity of sound rate.
D, core net receive the speed governing request that RNC sends；
In embodiments of the present invention, step 801-804 is identical with step 701-704 shown in above-mentioned Fig. 7,
Here is omitted.
805, core net is asked according to speed governing, adjusts the voice rate of core net；
If 806 core net adjust the voice rate failure of core net, then speed regulation failure information is sent out by core net
Deliver to RNC；
Step 806 can include step e and f:
If e core net is asked according to speed governing, adjust the voice rate failure of core net, then core net is to RNC
Send speed regulation failure information.
In embodiments of the present invention, if core net is asked according to speed governing, the voice rate adjusting core net loses
Lose, then core net sends speed regulation failure information to RNC.
Exemplary, the IU mouth of core net does not support the speed governing request that RNC sends, in this speed governing request
Including the voice rate of UE, so, the voice rate of self cannot be adjusted to what UE supported by core net
The size of voice rate.Then send speed regulation failure information to RNC.
F, RNC receive the speed regulation failure information that core net sends；
In embodiments of the present invention, core net is after RNC sends speed regulation failure information, and RNC receives core
The speed regulation failure information that heart net sends.
807, RNC transmits after the 3rd speech data received is carried out transcoding.
In embodiments of the present invention, RNC transmits after the 3rd speech data received is carried out transcoding.Can wrap
Include: RNC receives the speech data that core net sends, this speech data is sent to UE after transcoding.
Or, RNC receives the speech data that UE sends, and is sent out to core net by this speech data after transcoding
Send.
Exemplary, have failed because the speed of core net adjusts, so, the voice speed that core net sends
Rate or before the voice rate of 12.2kbps, UE be 5.9kbps, it is therefore desirable to RNC docking
The speech data received just transmits after carrying out transcoding.It should be noted that RNC receives what core net sent
After speed regulation failure information, it is also possible to continuing to send speed governing request to core net, concrete speed governing successfully walks
Suddenly see step 704-707 in above-mentioned Fig. 7.
In embodiments of the present invention, under weak overlay environment, RNC receives the voice rate that core net sends
Set, when the highest voice rate in voice rate set is more than the second preset threshold value, then RNC user sets
The voice rate of standby UE configuration is less than or equal to the second preset threshold value.So, RNC can be directly UE
Configure low voice rate, it is not necessary to RNC first sets up the voice rate identical with CN, just can turn down UE
Voice rate.As a example by narrowband speech, carry out again after accessing compared to prior art AMR12.2kbps
Radio bearer (Radio Bearer, RB) is heavily fitted on lower speed, has lacked RB weight flow of once eating dishes without rice or wine
Journey, thus reduce the call drop probability of user.Because when RB weight flow journey failure or RB weight flow journey introduce
Soft handover not in time, user can occur call drop；And then improve the speech quality of voice.
Above the method for the raising speech quality in the embodiment of the present invention is described, below to this
Radio network controller in bright embodiment is described, as it is shown in figure 9, be in the embodiment of the present invention
One embodiment schematic diagram of radio network controller, including:
Receiver module 901, for when signal quality is less than the first preset threshold value, receiver module receives core
The RAB RAB assignment message that net sends, RAB assignment message includes voice rate set；
Configuration module 902, if the highest voice rate in voice rate set is more than the second preset threshold
Value, then configuration module is that the voice rate of user equipment (UE) configuration is less than or equal to the second preset threshold value；
Transport module 903, transmits after the first speech data received carries out transcoding.
Optionally, in some embodiments of the invention, on the basis of shown in Fig. 9, as shown in Figure 10,
Radio network controller also includes:
Sending module 904, for sending speed governing request to core net, for adjusting the voice rate of core net
Size for the voice rate of UE.
Optionally, in some embodiments of the invention, on the basis of shown in Fig. 9 or Figure 10, such as figure
Shown in 11 or 12, transport module 903 includes:
Receive unit 9031, for receiving the downstream voice data that core net sends；
Transcoding units 9032, for downstream voice data is carried out transcoding, the downstream voice data after transcoding
Voice rate identical with the voice rate of UE；
Transmission unit 9033, for transmitting the downstream voice data after transcoding to UE.
Optionally, in some embodiments of the invention,
Receive unit 9031, be additionally operable to receive the upstream voice data that UE sends；
Transcoding units 9032, is additionally operable to upstream voice data is carried out transcoding, the ascending voice number after transcoding
According to voice rate identical with the voice rate of core net；
Transmission unit 9033, the upstream voice data after being additionally operable to transcoding is to core network.
Optionally, in some embodiments of the invention,
Receiver module 901, is additionally operable to receive the speed governing successful information that core net sends；
Transport module 903, is additionally operable to the second speech data to receiving and is transmitted.
Optionally, in some embodiments of the invention,
Receiver module 901, is additionally operable to receive the speed regulation failure information that core net sends；
Transport module 903, transmits after being additionally operable to the 3rd speech data received is carried out transcoding.
As shown in figure 13, for an embodiment schematic diagram of the core net in the embodiment of the present invention, including:
Sending module 1301, for when signal quality is less than the first preset threshold value, sending module is to wireless
Network controller RNC sends RAB RAB assignment message, and RAB assignment message includes voice
Speed set；
Receiver module 1302, for receiving the speed governing request that RNC sends；
Adjusting module 1303, for asking according to speed governing, adjusts the voice rate of core net；
Sending module 1301, if being additionally operable to core net successfully adjust the language that voice rate is UE of core net
The size of velocity of sound rate, then sending module sends speed governing successful information to RNC.
Optionally, in some embodiments of the invention,
Sending module 1301, if being additionally operable to core net to adjust the voice rate failure of core net, then sends mould
Block sends speed regulation failure information to RNC.
As shown in figure 14, another embodiment for the radio network controller in the embodiment of the present invention is illustrated
Figure, including:
This radio network controller can produce bigger difference because of configuration or performance difference, can include
Transceiver 1401, one or more central processing units (central processing units, CPU) 1402
(such as, one or more processors) and memorizer 1403, one or more store application
(such as one or more mass memories set the storage medium 1404 of program 14041 or data 14042
Standby).Wherein, memorizer 1403 and storage medium 1404 can be of short duration storage or persistently store.Storage
Program at storage medium 1404 can include one or more modules (not illustrating in Figure 14), often
Individual module can include a series of command operatings in radio network controller.Further, central authorities
Processor 1402 could be arranged to communicate with storage medium 1404, performs to deposit on radio network controller
A series of command operatings in storage media 1404.
In embodiments of the present invention, transceiver 1401, it is used for when signal quality is less than the first preset threshold value,
The RAB RAB assignment message that transceivers core net sends, RAB assignment message includes language
Velocity of sound rate set；
Processor 1402, if the highest voice rate in voice rate set is more than the second preset threshold value,
Then processor is that the voice rate of user equipment (UE) configuration is less than or equal to the second preset threshold value；To the received
One speech data transmits after carrying out transcoding.
Optionally, in some embodiments of the invention,
Transceiver 1401, step c being additionally operable to perform in the embodiment of the method shown in above-mentioned Fig. 7 and f or
Step c in embodiment of the method shown in person Fig. 8 and f；
Processor 1402, the step 707 being additionally operable to perform in the embodiment of the method shown in above-mentioned Fig. 7 or
Step 807 in embodiment of the method shown in Fig. 8.
Optionally, in some embodiments of the invention,
Processor 1402, specifically for receiving the downstream voice data that core net sends；To downlink voice number
According to carrying out transcoding, the voice rate of the downstream voice data after transcoding is identical with the voice rate of UE；To turn
Downstream voice data after Ma transmits to UE.
Optionally, in some embodiments of the invention,
Processor 1402, is specifically additionally operable to receive the upstream voice data that UE sends；To ascending voice number
According to carrying out transcoding, the voice rate of the upstream voice data after transcoding is identical with the voice rate of core net；
By the upstream voice data after transcoding to core network.
As shown in figure 15, for another embodiment schematic diagram of the core net in the embodiment of the present invention, including:
This core net can produce bigger difference because of configuration or performance difference, can include transceiver
1501, one or more central processing units (central processing units, CPU) 1502 (examples
As, one or more processors) and memorizer 1503, one or more store application program
15041 or the storage medium 1504 (such as one or more mass memory units) of data 15042.
Wherein, memorizer 1503 and storage medium 1504 can be of short duration storage or persistently store.It is stored in
The program of storage media 1504 can include one or more modules (not illustrating in Figure 15), Mei Gemo
Block can include a series of command operatings in core net.Further, central processing unit 1502 can
To be set to communicate with storage medium 1504, perform in storage medium 1504 in core net is a series of
Command operating.
In embodiments of the present invention, transceiver 1501, it is used for when signal quality is less than the first preset threshold value,
Transceiver sends RAB RAB assignment message to radio network controller (RNC), and RAB assigns
Message includes voice rate set；Receive the speed governing request that RNC sends；If core net successfully adjusts core
The size of the voice rate that voice rate is UE of net, then transceiver sends speed governing successful information to RNC.
Processor 1502, pragmatic, in asking according to speed governing, adjusts the voice rate of core net.
Optionally, in some embodiments of the invention, transceiver 1501, adjust if being additionally operable to core net
The voice rate failure of core net, then transceiver sends speed regulation failure information to RNC.
The embodiment of the present invention also provides for the computer program that a kind of data process, including storing program
The computer-readable recording medium of code, the instruction that described program code includes is aforementioned any one for performing
Method flow described in individual embodiment of the method.It will appreciated by the skilled person that aforesaid storage
Medium includes: USB flash disk, portable hard drive, magnetic disc, CD, random access memory (Random-Access Memory,
RAM), solid state hard disc (Solid State Disk, SSD) or other nonvolatile memories (non-volatile
(non-transitory) machine readable of the various non-transiences that can store program code such as memory)
Medium.
Those skilled in the art is it can be understood that arrive, and for convenience and simplicity of description, above-mentioned retouches
The specific works process of the system stated, device and unit, is referred to the correspondence in preceding method embodiment
Process, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, device and
Method, can realize by another way.Such as, device embodiment described above is only shown
Meaning property, such as, the division of described unit, be only a kind of logic function and divide, actual can when realizing
There to be other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another
System, or some features can ignore, or do not perform.Another point, shown or discussed each other
Coupling direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit
Or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, makees
The parts shown for unit can be or may not be physical location, i.e. may be located at a place,
Or can also be distributed on multiple NE.Can select according to the actual needs part therein or
The whole unit of person realizes the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit,
Can also be that unit is individually physically present, it is also possible to two or more unit are integrated in a list
In unit.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ software function list
The form of unit realizes.
If described integrated unit realizes and as independent production marketing using the form of SFU software functional unit
Or when using, can be stored in a computer read/write memory medium.Based on such understanding, this
The part that the most in other words prior art contributed of technical scheme of invention or this technical scheme
Completely or partially can embody with the form of software product, this computer software product is stored in one
In storage medium, including some instructions with so that computer equipment (can be personal computer,
Server, or the network equipment etc.) perform completely or partially walking of method described in each embodiment of the present invention
Suddenly.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD
Etc. the various media that can store program code.
The above, above example only in order to technical scheme to be described, is not intended to limit；
Although being described in detail the present invention with reference to previous embodiment, those of ordinary skill in the art should
Work as understanding: the technical scheme described in foregoing embodiments still can be modified by it, or to it
Middle part technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution
Essence depart from various embodiments of the present invention technical scheme spirit and scope.
Claims (16)
1. the method improving speech quality, it is characterised in that including:
When signal quality is less than the first preset threshold value, radio network controller (RNC) receives core net and sends
RAB RAB assignment message, described RAB assignment message includes voice rate set；
If the highest voice rate in described voice rate set is more than the second preset threshold value, the most described RNC
Voice rate for user equipment (UE) configuration is less than or equal to described second preset threshold value；
Described RNC transmits after the first speech data received is carried out transcoding.
Method the most according to claim 1, it is characterised in that described method also includes:
Described RNC sends speed governing request to described core net, for adjusting the voice rate of described core net
Size for the voice rate of described UE.
Method the most according to claim 1 and 2, it is characterised in that described RNC is to reception
First speech data transmits after carrying out transcoding, including:
Described RNC receives the downstream voice data that described core net sends；
Described RNC carries out transcoding to described downstream voice data, the downstream voice data after described transcoding
Voice rate is identical with the voice rate of described UE；
Downstream voice data after transcoding is transmitted by described RNC to described UE.
Method the most according to claim 1 and 2, it is characterised in that described RNC to receiving the
One speech data transmits after carrying out transcoding, including:
Described RNC receives the upstream voice data that described UE sends；
Described RNC carries out transcoding to described upstream voice data, the upstream voice data after described transcoding
Voice rate is identical with the voice rate of described core net；
Described RNC by the upstream voice data after transcoding to described core network.
5. according to the arbitrary described method of claim 1-4, it is characterised in that described method also includes:
Described RNC receives the speed governing successful information that described core net sends；
The second speech data received is transmitted by described RNC.
6. according to the arbitrary described method of claim 1-4, it is characterised in that described method also includes:
Described RNC receives the speed regulation failure information that described core net sends；
Described RNC transmits after the 3rd speech data received is carried out transcoding.
7. the method improving speech quality, it is characterised in that including:
When signal quality is less than the first preset threshold value, core net sends nothing to radio network controller (RNC)
Line access bearer RAB assignment message, described RAB assignment message includes voice rate set；
Described core net receives the speed governing request that described RNC sends；
Described core net is asked according to described speed governing, adjusts the voice rate of described core net；
If described core net successfully adjusts the size of the voice rate that voice rate is UE of described core net,
The most described core net sends speed governing successful information to described RNC.
Method the most according to claim 7, it is characterised in that described method also includes:
If described core net adjusts the voice rate failure of described core net, the most described core net is to described
RNC sends speed regulation failure information.
9. a radio network controller, it is characterised in that including:
Receiver module, for when signal quality is less than the first preset threshold value, described receiver module receives core
The RAB RAB assignment message that heart net sends, described RAB assignment message includes voice rate
Set；
Configuration module, if the highest voice rate in described voice rate set is more than the second preset threshold
Value, the most described configuration module is that the voice rate of user equipment (UE) configuration is less than or equal to described second preset threshold
Value；
Transport module, transmits after the first speech data received carries out transcoding.
Radio network controller the most according to claim 9, it is characterised in that described wireless network
Network controller also includes:
Sending module, for sending speed governing request to described core net, for adjusting the language of described core net
Velocity of sound rate is the size of the voice rate of described UE.
11. according to the radio network controller described in claim 9 or 10, it is characterised in that described biography
Defeated module includes:
Receive unit, for receiving the downstream voice data that described core net sends；
Transcoding units, for carrying out transcoding, the downlink voice after described transcoding to described downstream voice data
The voice rate of data is identical with the voice rate of described UE；
Transmission unit, for transmitting the downstream voice data after transcoding to described UE.
12. according to the radio network controller described in claim 9 or 10, it is characterised in that described biography
Defeated module includes:
Described reception unit, is additionally operable to receive the upstream voice data that described UE sends；
Described transcoding units, is additionally operable to carry out described upstream voice data transcoding, upper after described transcoding
The voice rate of row speech data is identical with the voice rate of described core net；
Described transmission unit, the upstream voice data after being additionally operable to transcoding is to described core network.
13. according to the arbitrary described radio network controller of claim 9-12, it is characterised in that
Described receiver module, is additionally operable to receive the speed governing successful information that described core net sends；
Described transport module, is additionally operable to the second speech data to receiving and is transmitted.
14. according to the arbitrary described radio network controller of claim 9-12, it is characterised in that
Described receiver module, is additionally operable to receive the speed regulation failure information that described core net sends；
Described transport module, transmits after being additionally operable to the 3rd speech data received is carried out transcoding.
15. 1 kinds of core net, it is characterised in that including:
Sending module, for when signal quality is less than the first preset threshold value, described sending module is to wireless
Network controller RNC sends RAB RAB assignment message, and described RAB assignment message includes
Voice rate set；
Receiver module, for receiving the speed governing request that described RNC sends；
Adjusting module, voice is asked according to described speed governing, adjusts the voice rate of described core net；
Described sending module, if being additionally operable to described core net and successfully adjusting the voice rate of described core net be
The size of the voice rate of UE, the most described sending module sends speed governing successful information to described RNC.
16. core net according to claim 15, it is characterised in that
Described sending module, if being additionally operable to described core net to adjust the voice rate failure of described core net,
The most described sending module sends speed regulation failure information to described RNC.
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| CN201610502502.3A CN105979495B (en) | 2016-06-30 | 2016-06-30 | Method for improving call quality, radio network controller and core network |
| PCT/CN2017/090019 WO2018001203A1 (en) | 2016-06-30 | 2017-06-26 | Method for improving call quality, wireless network controller and core network |
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| CN201610502502.3A CN105979495B (en) | 2016-06-30 | 2016-06-30 | Method for improving call quality, radio network controller and core network |
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| WO2018001203A1 (en) * | 2016-06-30 | 2018-01-04 | 华为技术有限公司 | Method for improving call quality, wireless network controller and core network |
| CN112533065A (en) * | 2020-12-11 | 2021-03-19 | 北京达佳互联信息技术有限公司 | Method and device for publishing video, electronic equipment and storage medium |
| CN114258069A (en) * | 2021-12-28 | 2022-03-29 | 北京东土拓明科技有限公司 | Voice call quality evaluation method and device, computing equipment and storage medium |
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| CN114760603B (en) * | 2022-04-19 | 2023-09-05 | 安天科技集团股份有限公司 | Communication method, device, core network equipment and system of mobile terminal |
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| WO2018001203A1 (en) | 2018-01-04 |
| CN105979495B (en) | 2019-12-24 |
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