CN102237091B - Frame division multiplexing-based adaptive voice service bearing method and system - Google Patents
Frame division multiplexing-based adaptive voice service bearing method and system Download PDFInfo
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Abstract
The invention relates to a frame division multiplexing-based adaptive voice service bearing method and system in a time division-synchronization code division multiple access (TD-SCDMA) system. The method comprises the following steps of: at a radio network controller, selecting voice coding/decoding rate according to a voice service load of a network and distributing radio resources to user equipment based on a radio frame; and at the user equipment, transmitting and/or receiving voice signals based on the voice coding/decoding rate selected by the radio network controller and based on the radio resources distributed by the radio frame. According to the method and the system, when the voice service load in the network is lower, high voice coding/decoding rate can be selected, and the radio resources are distributed to the user equipment in a mode of continuous radio frames; when the voice service load in the network is higher, low voice coding/decoding rate can be selected, and the same radio resources are distributed to at least two pieces of user equipment by using at least one continuous radio frame as a unit; and therefore, frame division multiplexing-based adaptive voice service bearing is realized.
Description
Technical field
The present invention relates to the voice communication in the TD-SCDMA system, more particularly, relate in the TD-SCDMA system and divide multiplexing adaptive voice service bearer method and system, radio network controller (RNC) and subscriber equipment (UE) based on frame.
Background technology
In global mobile communication (GSM) system, full rate (FR) speech business and half rate (HR) speech business are arranged, FR is the first digit voice coding standard of in the GSM digital mobile telephone system, using, the mean bit rate of encoding and decoding (codec) is 13kbps.HR carries out work with 5.6kbps, thereby needs the half-band width of full rate codec, thereby the network capacity of speech business can double, and audio quality can descend to some extent in the case certainly.In existing GSM network, when offered load was high, can switch to the HR speech business increased the speech business capacity.
For the TD-SCDMA system, along with user's increase, China Mobile (CMCC) also hopes to adopt low rate (like AMR 4.75kbps) speech business, to practice thrift orthogonal variable spread spectrum (OVSF) sign indicating number.
For example; For the two-forty in the TD-SCDMA system (AMR 12.2kbps) speech business,, go up use 2 * SF16 (two continuous SF16 spreading codes) at downlink (DL) for each subframe; On up-link (UL), use 1 * SF8 (a SF8 spreading code).
In order to realize the low rate speech business, suggestion is all used 1 * SF16 (a SF16 spreading code) for each subframe on DL and UL, so that the speech business capabilities double, this is called as code division multiplexing (CDM) method.
Adopt the CDM method, (UE) all distributes 1 * SF16 sign indicating number for each subscriber equipment, therefore needs to use Midamble K=16, so that on a DL or UL time slot, support maximum 16 users.
Compare with Midamble K=8 (default setting in the existing network), the correlated performance of Midamble K=16 is relatively poor, therefore can influence joint-detection.And, when Midamble K=16 because the length of detection window is reduced to 8 chips from 16 chips, so the peak value of channel impulse response (CIR) under the wireless environment complicated situation, skid off easily outside the detection window, as shown in Figure 1.
In Fig. 1, when detection window length is 16 chips (K=8), can more sides peak be included in the detection window, and can not make these side peaks when the SS adjustment that wireless environment variation perhaps makes a mistake, skid off outside the window.
Therefore, hope in the TD-SCDMA system, still can use Midamble K=8 to realize the low rate speech business.
Summary of the invention
In view of the problems referred to above of the prior art, the present invention has been proposed, the present invention is devoted to provide a kind of adaptive voice service bearer method and system, radio network controller and subscriber equipment that in TD-SCDMA, divides multiplexing (TDM) based on frame.Particularly when carrying low rate (for example AMR4.75kbps) speech business, still can use Midamble K=8.
According to a first aspect of the invention; Provide a kind of and in the TD-SCDMA system, divided multiplexing adaptive voice service bearer method based on frame; This method may further comprise the steps: at the radio network controller place, be the user equipment allocation Radio Resource according to the speech business load selection encoding and decoding speech speed of network and based on radio frames; With at said subscriber equipment place, based on the selected encoding and decoding speech speed of said radio network controller with based on radio frames institute assigned radio resource, carry out the transmission and/or the reception of voice signal.
According to a second aspect of the invention; A kind of radio network controller that in the TD-SCDMA system, uses is provided; This radio network controller comprises: speech business load monitoring portion, and this speech business load monitoring portion is set to the speech business load in the network is monitored; Encoding and decoding speech rate selection portion; This encoding and decoding speech rate selection portion is set to the monitoring result according to said speech business load monitoring portion; From preset encoding and decoding speech rate set, select to be suitable for the encoding and decoding speech speed of this monitoring result; Wherein, this preset encoding and decoding speech rate set comprises the first high encoding and decoding speech speed and the second low voice encoding and decoding speed at least; Allocation of radio resources portion, this allocation of radio resources portion are set to the encoding and decoding speech speed selected according to by said encoding and decoding speech rate selection portion, and coming with one or more radio frames is that unit is one or more user equipment allocation Radio Resource; And notice portion, this notice portion is set to the said selected encoding and decoding speech speed of encoding and decoding speech rate selection portion and said allocation of radio resources portion are carried out the result notification of allocation of radio resources and gives said subscriber equipment.
According to a third aspect of the invention we; A kind of subscriber equipment that in the TD-SCDMA system, uses is provided; This subscriber equipment comprises encoding and decoding speech portion, buffering and rate-matched portion and receiving and transmitting part; Wherein, said encoding and decoding speech portion is set to according to the selected encoding and decoding speech speed of system voice signal carried out encoding and decoding; Said buffering and rate-matched portion are set to cushioning through the coded voice signal of said encoding and decoding speech portion and carrying out rate-matched according to the voice transfer speed of network and handle; To pass through voice signal that rate-matched handles subsequently sends to said receiving and transmitting part and the voice signal that receives from said receiving and transmitting part is gone rate-matched to handle and will send to said encoding and decoding speech portion through removing voice signal after rate-matched is handled; Said receiving and transmitting part is set to sending in definite vertical shift period based on frame offset value that system distributed through the voice signal of said buffering with the processing of rate-matched portion; And/or receive the voice signal that sends from network in the vertical shift period of confirming knowing, and this voice signal is sent to said buffering and rate-matched portion based on the vertical shift that system distributed.
According to a forth aspect of the invention; Provide a kind of and in the TD-SCDMA system, divided multiplexing adaptive voice service bearer system based on frame; It comprises radio network controller and subscriber equipment; Wherein, Said radio network controller is set to according to the speech business load selection encoding and decoding speech speed of network and is the user equipment allocation Radio Resource based on radio frames, and said subscriber equipment is set to carry out the transmission and/or the reception of voice signal based on the selected encoding and decoding speech speed of said radio network controller with based on radio frames institute assigned radio resource.
According to the present invention; When the speech business load in the network is low, can selects high encoding and decoding speech speed, and be the user equipment allocation Radio Resource with the mode of continuous radio frames; And when the speech business load in the network is higher; Can select low voice encoding and decoding speed, and be that unit is at least two Radio Resources that user equipment allocation is same, thereby realize dividing multiplexing adaptive voice service bearer based on frame with at least one continuous radio frames.
According to the present invention, can divide the speech business of multiplexing carrying low rate based on frame.Compare with traditional CDM method; Divide multiplexing low rate speech business bearing method still can use Midamble K=8 based on frame; Thereby, under the multipath wireless environment, can obtain more performance simultaneously because of its long detection window can obtain the good detection performance.
And, adopting and divide multiplexing low rate speech business bearing method based on frame, subscriber equipment can use more continually and intermittently send (DTX) and intermittently receive (DRX).Like this, subscriber equipment only need be in the part radio frames but not on all radio frames, is sent or receive.Therefore, subscriber equipment can be saved more power.
Description of drawings
Included accompanying drawing is used to provide further understanding of the invention; It has constituted the part of instructions, illustration embodiment of the present invention, and be used for explaining principle of the present invention with explanatory note; Wherein, represent with identical Reference numeral all the time for identical key element.In the accompanying drawings:
Fig. 1 is the comparison diagram of the peak value of the channel impulse response of detection window length when being respectively 8 chips and 16 chips;
Fig. 2 is the figure of illustration according to the realization example of the user plane of one embodiment of the present invention;
Fig. 3 is the figure of illustration according to the realization example of the control plane of one embodiment of the present invention;
Fig. 4 is the figure of illustration according to the transmission channel configuration of one embodiment of the present invention;
Fig. 5 is the figure of illustration according to the physical channel configuration of one embodiment of the present invention;
Fig. 6 is the comparison diagram of the physical channel configuration of illustration Traditional use CDM method when carrying the low rate speech business and adopting the TDM method to carry the low rate speech business according to one embodiment of the present invention;
Fig. 7 is the figure of the network structure of the illustration TD-SCDMA system relevant with the present invention;
Fig. 8 is the functional block diagram of illustration according to the formation of the subscriber equipment (UE) of one embodiment of the present invention;
Fig. 9 is the functional block diagram of illustration according to the formation of the radio network controller (RNC) of one embodiment of the present invention;
Figure 10 is the overview flow chart of illustration according to the adaptive voice service bearer method of one embodiment of the present invention;
Figure 11 is an illustration according to the adaptive voice service bearer method of one embodiment of the present invention process flow diagram in the processing procedure example at RNC place; And
Figure 12 A and Figure 12 B are respectively illustrations according to the adaptive voice service bearer method of one embodiment of the present invention process flow diagram in the processing procedure example at UE place.
Embodiment
With reference to following description and accompanying drawing, will know of the present invention these with other aspects.In these descriptions and accompanying drawing, specific implementations of the present invention is specifically disclosed, represent some modes of the principle of embodiment of the present invention, but should be appreciated that scope of the present invention is not limited.On the contrary, the present invention includes spirit and interior all changes, modification and the equivalent of intension scope that falls into appended claims.
Describe and/or illustrative characteristic to embodiment, can in one or more other embodiment, use in the same manner or in a similar manner, and/or combine with the characteristic of other embodiments or replace the characteristic of other embodiments to use.
What should stress is; Term " comprises " existence that when using in this manual, is used to refer to said characteristic, important document, step or ingredient, but does not get rid of the existence or the increase of one or more further feature, important document, step, ingredient or their combination.
With reference to following accompanying drawing, will understand many aspects of the present invention better.Parts and characteristic shown in a figure of the present invention or the embodiment can combine with parts and the characteristic shown in one or more other figure or the embodiment.In addition, in the accompanying drawings, identical label is all indicating corresponding part among the figure, and can be used for indicating the identical or similar portions in the above embodiment.
At first, describe according to one embodiment of the present invention with reference to Fig. 2-6 and adopt frame to divide the method for multiplexing (TDM) in the TD-SCDMA system, to realize the principle of low rate (for example AMR 4.75kbps) speech business.
In the TD-SCDMA system, can realize the for example speech business of AMR 12.2kbps (height) and two kinds of speed of AMR 4.75kbps (low) at least.
When realizing the speech business of AMR 4.75kbps; Hope still to adopt the sign indicating number resource identical with the speech business of AMR 12.2kbps, that is, and for downlink (DL); Use two continuous SF16 sign indicating numbers; And, use a SF8 sign indicating number for up-link (UL), can continue to use identical Midamble K=8 like this.
Calculating shows that it is that unit carries out allocation of radio resources that the transmission bandwidth of the speech business of AMR 4.75kbps allows with two virtual resource units (VRU).A plurality of (for example two) subscriber equipment (UE) shared identical Radio Resource on different radio frames, promptly identical carrier frequency, identical time slot, identical channel code.Like this, system can hold more speech business user.
Fig. 2 illustration according to the realization example of the user plane (UP) of one embodiment of the present invention.
At Iu UP layer,, all will come TPDU (PDU) according to the Iu fixed time interval (ITI) of 20ms no matter adopt which kind of speech business bearing method.PDU is made up of RAB stream combined indication character (RFCI) and Service Data Unit (SDU), that is, and and PDU=RFCI+SDU.
For speech business, Radio Link control (RLC) layer is transparent.But need control (MAC) layer in media interviews and accomplish buffering and rate-matched function.
For example, for the son stream # 1 and the son stream #2 of the speech business of AMR 4.75kbps, the MAC entity need be accomplished following buffering and rate-matched function:
● when when receiving grouping, transmitting SDU to the upper strata according to the interval (this equals the ITI of Iu UP layer) of 20ms from lower floor's (Frame Protocol (FP) layer);
● when in one's own timeslice (repeat length (RL)) when the FP layer send to divide into groups, send double data volume.
Like this, changing to TDM method according to the present invention from traditional CDM method is transparent for Iu UP layer.Can be unit with the radio frames of 10ms, give two UE, between these two UE, switch each other, realize carrying based on the low rate speech business of TDM with identical physical source distributing.
Fig. 3 is the figure of illustration according to the realization example of the control plane of one embodiment of the present invention.
The realization of control plane is similar to the realization of user plane; The difference part is will be at multiplexing 4 Signaling Radio Bearer of MAC layer (SRB); Wherein two SRB are used for radio resource control layer (RRC); Two other SRB is used for Network adaptation sublayer (NAS), and these SRB and acting on are known in the art, and are not described in detail at this.Consider the real-time of speech business, need to shorten the cycle (repetition period (RP)) of TDM.For this reason, the Transmission Time Interval (TTI) of the SRB of dedicated channel (DCH) is as far as possible little, but the bandwidth of SRB still will keep, and for example is 1.7kbps or 3.4kbps.
Like this, keeping the length of Midamble K=8 and detection window is 16 chips, through 1: 2 TDM, has realized the carrying of SRB of voice+3.4kbps of CS territory 4.75kbps, thereby has made the capacity of system voice business to double.
Fig. 4 is the figure of illustration according to the transmission channel configuration of one embodiment of the present invention.
Fig. 5 is the figure of illustration according to the physical channel configuration of one embodiment of the present invention.
Fig. 6 is the comparison diagram of the physical channel configuration of illustration Traditional use CDM method when carrying the low rate speech business and adopting the TDM method to carry the low rate speech business according to one embodiment of the present invention.Visible from figure, according to the present invention, can practice thrift a yard resource.
Consider the real-time characteristic of speech business, RP will be provided with as far as possible for a short time, for example can be set to 40ms.Particularly, transmission and physical channel parameters for example can define as follows:
● RP=40ms, repeat length (RL)=20ms;
● voice sub stream #1:TTI=10ms, TB size (transmission block size)=42 or 39 bits;
● voice sub stream #2:TTI=10ms, TB size (transmission block size)=53 bits;
● SRB:TTI=20ms, TB size=148 bit.
For the MAC-d entity of SRB, in its 20ms RL, will send 1 * 148 bit, so the mean bit rate of SRB is 3.4kbps.Use the SRB of 3.4kbps but not the SRB of 1.7kbps can reduce the delay in the chain of command.In most of the cases, in SRB, do not transmit data, thereby speech radio bearer can be used all wireless bandwidths.
Table 1 shows the physical channel parameters that speech business is adopted for the low rate configuration according to one embodiment of the present invention.
| Physical channel parameters | The DPCH up-link | The DPCH downlink |
| Modulation | QPSK | QPSK |
| Sign indicating number and time slot/radio frames | SF8 * 1 sign indicating number * 2 time slots | SF16 * 2 sign indicating number * 2 time slots |
| Maximum data bit number/radio frames | 328 bits | 328 bits |
| TFCI code word/radio frames | 16 bits | 16 bits |
| The TPC/ radio frames | 2 * 2 bits | 2 * 2 bits |
| The SS/ radio frames | 2 * 2 bits | 2 * 2 bits |
| RP | 4 | 4 |
| RL | 2 | 2 |
| The punching limit | 0.44 | 0.44 |
If support the dividing function of MAC-d, can use littler TB for signaling, 148 bits/2=74 bit for example, perhaps 148 bits/4=37 bit can use littler TTI to SRB like this, and can use littler RL.If the TTI of SRB and RB is 10ms, RP is 20ms, and RL is 10ms.Speech business will be less than postponing so.
Further describe embodiment of the present invention below in conjunction with the realization example in the TD-SCDMA network.
Fig. 7 shows a typical formation example of TD-SCDMA network.As shown in the figure, typical TD-SCDMA network comprises subscriber equipment (UE) territory 100, RNS (RNS) territory 200 and core net (CN) territory 300.UE territory 100 comprises at least one UE.Schematically show two user equipment (UE)s 1 and UE2 among the figure, but should be appreciated that the quantity of the UE that can hold in the system is not limited to two.RNS territory 200 comprises NodeB 210 and radio network controller (RNC) 220.NodeB 210 and UE territory 100 communicate through air interface, are connected through Iub interface with RNC220.RNS territory 200 and CN territory 300 be connected and the formation and the present invention in CN territory 300 do not have direct correlation property, do not do detailed description here.
Following emphasis combines UE 100 and the formation example of RNC 220 and the processing procedure of in them, carrying out to describe in more detail the present invention.
According to one embodiment of the present invention; RNC 220 can be to the speech business load in the network (for example; Initiate the number of users of audio call in the sub-district simultaneously) monitor; According to this monitoring result (for example from the encoding and decoding speech rate set that is provided with in advance; Comprise AMR 12.2kbps and AMR4.75kbps) in select suitable encoding and decoding speech speed, and come to make it possible to hold user as much as possible and carry out voice communication based on radio frames for UE 100 distributing radio resource (frequency, code channel, time slot) according to selected encoding and decoding speech speed.RNC 220 can notify selected encoding and decoding speech speed and corresponding radio resource allocation result to UE 100, and UE 100 can carry out speech business communication in view of the above.Note, use label " 100 " to come to refer to simultaneously UE territory and UE at this.
Fig. 8 is the schematic block diagram of illustration according to the formation example of the UE 100 of one embodiment of the present invention, and Fig. 9 is the schematic block diagram of illustration according to the formation example of the RNC 220 of one embodiment of the present invention.
As shown in Figure 8, UE 100 can comprise encoding and decoding speech portion 110, buffering and rate-matched portion 120 and receiving and transmitting part 130.
As shown in Figure 9, RNC 220 can comprise speech business load monitoring portion 2210, encoding and decoding speech rate selection portion 2220, allocation of radio resources portion 2230 and notice portion 2240.
In RNC 220; When speech business load monitoring portion 2210 monitors speech business load in the network when low, for example, the number of users of initiating audio call simultaneously is no more than the predetermined user number; Encoding and decoding speech rate selection portion 2220 is according to this monitoring result; Can from preset encoding and decoding speech rate set, select high encoding and decoding speech speed, AMR 12.2kbps for example, this is corresponding to regular situation.And monitor speech business load in the network when higher when speech business load monitoring portion 2210; For example; The number of users of initiating audio call has simultaneously surpassed the predetermined user number, and low voice encoding and decoding speed can be selected according to this monitoring result by encoding and decoding speech rate selection portion 2220 from preset encoding and decoding speech rate set; AMR 4.75kbps for example, this carries corresponding to low rate speech business that the front is described.
Allocation of radio resources portion 2230 is according to the encoding and decoding speech speed of being selected by encoding and decoding speech rate selection portion 2220, and coming with one or more radio frames is that unit is one or more UE distributing radio resource.For example; When AMR12.2kbps had for example selected in encoding and decoding speech rate selection portion 2220, allocation of radio resources portion 2230 was each UE distributing radio resource with the mode of continuous radio frames, promptly; In each radio frames, the Radio Resource of distributing to each UE all is different.This is corresponding to conventional situation, but also can be considered a special case of TDM method of the present invention.When AMR 4.75kbps has for example selected in encoding and decoding speech rate selection portion 2220; Allocation of radio resources portion 2230 can for example be set to 40ms and 20ms respectively through RP and RL with code channel; Coming with two continuous radio frames is that unit is that two UE distribute same Radio Resource; But the frame offset value of two UE (offset) difference, one is 0, another is 2.Like this, two UE can be that unit is used alternatingly the transmitting-receiving that same Radio Resource carries out speech business with two radio frames.Here cited RP, RL and offset value only are examples; For example as previously mentioned; Also can RP, RL be set to 20ms and 10ms respectively, be that unit distributes same Radio Resource for two or more UE with a radio frames, thereby realize undelayed speech business.
Notice portion 2240 can give UE 100 with the result notification of encoding and decoding speech rate selection portion 2220 selected encoding and decoding speech speed and allocation of radio resources portion 2230 execution allocation of radio resources.
In UE 100, encoding and decoding speech portion 110 can carry out encoding and decoding to voice signal according to the encoding and decoding speech speed of being notified by the notice portion 2240 among the RNC 220.
Buffering and rate-matched portion 120 can be to cushioning through encoding and decoding speech portion 110 coded voice signals; And carry out rate-matched according to the voice transfer speed of network and handle, the voice signal that will pass through the rate-matched processing subsequently sends to receiving and transmitting part 130.Buffering and rate-matched portion 120 can also go rate-matched to handle the voice signal that receives from receiving and transmitting part 130 and will send to encoding and decoding speech portion 110 through removing the voice signal after rate-matched is handled, to be decoded according to relevant voice encoding and decoding speed by encoding and decoding speech portion 110.
For encoding and decoding speech speed for example is the situation of AMR 12.2kbps, and the buffering of buffering and rate-matched portion 120 is identical with conventional situation with the rate-matched processing, no longer details.
For encoding and decoding speech speed for example is the situation of AMR 4.75kbps; When sending signal; For example, buffering and rate-matched portion 120 can at first cushion the voice signal of 40ms (corresponding to the RP of system assignment), carry out rate-matched according to the voice transfer speed of network and handle; Make the voice signal of 40ms in the RL of 20ms (that is two radio frames), to send.And when receiving signal; Buffering and 120 pairs of receiving and transmitting parts 130 of rate-matched portion are at the RL of 20ms (promptly; Two radio frames) signal that receives in carries out handling the opposite rate-matched of going with above-mentioned rate-matched to be handled; It is reverted to the voice signal of 40ms, send to encoding and decoding speech portion 110 then and decode.
Receiving and transmitting part 130 can be based on system (promptly; RNC 220) frame offset value that distributed is (for example; 0 or 2) send in the vertical shift period of confirming through the voice signal that cushions and rate-matched portion 120 handles; With receive the voice signal that sends from network, and this voice signal is sent to buffering and rate-matched portion 120, to go the rate-matched processing.
Need to prove, more than cited encoding and decoding speech speed be AMR 12.2kbps or AMR 4.75kbps and RP, RL to be respectively 40ms, 20ms only be example, according to circumstances, also can select other suitable encoding and decoding speech speed and RP, RL value.
To Figure 12 B the adaptive voice service bearer method according to one embodiment of the present invention is described with reference to Figure 10 below.
Figure 10 is an overview flow chart, and at step S1000 place, RNC 220 is according to the suitable encoding and decoding speech speed of the speech business load selection in the network (for example, AMR 12.2kbps and AMR4.75kbps), and is the UE distributing radio resource based on radio frames.At step S2000 place.UE 100 carries out the transmitting-receiving of speech business according to encoding and decoding speech speed and assigned radio resource that RNC 220 selects.
Figure 11 in further detail illustration the processing procedure of S1000 among the figure.
At step S1010 place, the number of users of audio call is for example initiated in the speech business load in RNC 220 monitoring networks simultaneously.
At step S1020 place, RNC 220 judges whether current speech business load is higher than predetermined threshold, for example, judges whether the number of users of initiating audio call simultaneously surpasses predefined number of users.When judged result was " being ", process forwarded step S1030 to, carried out low rate speech business load bearing process branch; And when judged result was " denying ", process forwarded step S1030 ' to, carried out two-forty speech business load bearing process branch.
At step S1030, because the current speech business load is higher, so RNC 220 selects low voice encoding and decoding speed, for example AMR 4.75kbps from preset encoding and decoding speech rate set.Then,, for example can the RP and the RL of code channel be set to 40ms and 20ms respectively, be that unit is respectively the same Radio Resource of two UE, 100 distribution with two continuous radio frames, and the offset value of two UE 100 is set to 0 and 2 respectively at step S1040.Here cited RP, RL and offset value only are examples; For example as previously mentioned; Also can RP, RL be set to 20ms and 10ms respectively, be that unit is that two or more UE 100 distribute same Radio Resource with a radio frames, thereby realize undelayed speech business.
At step S1030 ', because the current speech business load is lower, so RNC 220 selects high encoding and decoding speech speed, for example AMR 12.2kbps from preset encoding and decoding speech rate set.Then, at step S1040 ', be each UE 100 distributing radio resource with the mode of continuous radio frames.That is, in each radio frames, the Radio Resource of distributing to each UE 100 all is different.This is corresponding to conventional situation.
Subsequently, at step S1050, RNC 220 gives UE 100 with selected encoding and decoding speech speed and allocation of radio resources result notification.
Figure 12 A and 12B show the transmission of the execution speech business at UE 100 places and the process flow diagram of receiving course respectively.
Shown in Figure 12 A, when sending speech business,, voice signal is sampled, encoded based on received encoding and decoding speech speed at first at step S2110.
Then, at step S2120, for example cushion speech sample according to some cycles.If encoding and decoding speech speed is the high encoding and decoding speech speed of for example AMR 12.2kbps, for example can cushion speech sample by the cycle of 20ms.If encoding and decoding speech speed is the low voice encoding and decoding speed of for example AMR 4.75kbps, for example can cushion speech sample by the cycle of 40ms (corresponding to the RP of system assignment).
Then, at step S2130, according to the voice transfer speed of network the speech sample that is cushioned is carried out rate-matched and handle.No matter be which kind of encoding and decoding speech speed, after handling through rate-matched, the speech sample that is cushioned can send in the cycle of 20ms (two radio frames).
Then, at step S2140, the frame offset value that in based on received allocation of radio resources result, comprises (for example, 0 or 2) and send the signal of handling through rate-matched in vertical shift period (for example, two radio frames) of confirming.
Shown in Figure 12 B, when receiving speech business, at first at step S2210, UE 100 is received speech signal in the vertical shift period of confirming according to frame offset value of distributing to oneself.
Then,, cushion the for example voice signal of 20ms, go rate-matched to handle according to the encoding and decoding speech speed of being notified at step S2220.For example, be the situation of the high encoding and decoding speech speed of for example AMR 12.2kbps for encoding and decoding speech speed, through rate-matched processing in the past, the voice signal that is still 20ms of acquisition; And be the situation of the low voice encoding and decoding speed of for example AMR 4.75kbps for encoding and decoding speech speed, handle through rate-matched in the past, can obtain the voice signal of 40ms.
Then, at step S2230, according to relevant voice encoding and decoding speed the voice signal of handling through the past rate-matched is decoded, finally it is played to the user through playing device.
Need to prove, more than cited encoding and decoding speech speed be AMR 12.2kbps or AMR 4.75kbps and RP, RL to be respectively 40ms, 20ms only be example, according to circumstances, also can select other suitable encoding and decoding speech speed and RP, RL value.
According to the present invention; When carrying the low rate speech business, adopt the TDM method to replace traditional CDM method, can use Midamble K=8; Thereby, under the multipath wireless environment, obtain more performance simultaneously because of its long detection window obtains the good detection performance.
And, adopting the TDM method, UE can use DTX and DRX more continually, and UE only need be in the part radio frames but not is sent or receive in all radio frames.Therefore, when carrying the low rate speech business, UE can save more power.
Although below only selected preferred embodiment to come illustration the present invention, those skilled in the art are easy under the situation that does not break away from the invention scope that is defined by the following claims, carry out variations and modifications according to content disclosed herein.The explanation of the foregoing description only is an exemplary, and does not constitute the restriction accompanying claims and the invention that equivalent limited thereof.
Should be appreciated that each several part of the present invention can use hardware, software, firmware or their combination to realize.In the above-described embodiment, a plurality of steps or method can realize with being stored in the storer and by software or firmware that suitable instruction execution system is carried out.For example; If realize with hardware; The same in another embodiment, each in the following technology that can know altogether with this area or their combination realize: have the discrete logic that is used for data-signal is realized the logic gates of logic function, have the special IC of suitable combinational logic gate circuit; Programmable gate array (PGA), field programmable gate array (FPGA) etc.
Describe or frame can be understood that in the process flow diagram or in this any process of otherwise describing or method; Expression comprises module, fragment or the part of code of the executable instruction of the step that one or more is used for realizing specific logical function or process; And the scope of preferred implementation of the present invention comprises other realization; Wherein, can comprise according to related function by the mode of basic while or by opposite order not according to order shown or that discuss; Carry out function, this should be understood by those skilled in the art according to the invention.
Expression is perhaps in this logic of otherwise describing and/or step in process flow diagram; For example; Can be considered to be used to realize the sequencing tabulation of the executable instruction of logic function; May be embodied in any computer-readable medium; Use for instruction execution system, device or equipment (like computer-based system, comprise that system or other of processor can be from the systems of instruction execution system, device or equipment instruction fetch and execution command), or combine these instruction execution systems, device or equipment and use.With regard to this instructions, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure are for instruction execution system, device or equipment or combine these instruction execution systems, device or equipment and the device that uses.Computer-readable medium for example can be but be not limited to electronics, magnetic, light, electromagnetism, infrared or semiconductor system, device, equipment or propagation medium.The example more specifically of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronic installation) with one or more wiring; Portable computer diskette box (magnetic device); Random-access memory (ram) (electronic installation), ROM (read-only memory) (ROM) (electronic installation), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory) (electronic installation); Optical fiber (electro-optical device), and portable optic disk ROM (read-only memory) (CDROM) (optical devices).In addition; Computer-readable medium even can be paper or other the suitable media that to print said program above that; Because can be for example through paper or other media are carried out optical scanning; Then edit, decipher or handle to obtain said program with other suitable method in case of necessity with the electronics mode, then it is stored in the computer memory.
Above-mentioned explanatory note and accompanying drawing show various characteristic of the present invention.Should be appreciated that those of ordinary skills can prepare suitable computer code and realize top the description and illustrative in the accompanying drawings each step and process.It is also understood that above-described various terminal, computing machine, server, network etc. can be any kinds, and can prepare said computer code according to disclosure and realize the present invention to utilize said device.
Specific implementations of the present invention is disclosed at this.Those of ordinary skill in the art will readily appreciate that the present invention has other application under other environment.In fact, also there are many embodiments and realization.Accompanying claims is absolutely not in order to limit the scope of the present invention to above-mentioned embodiment.In addition; Arbitrarily for " be used for ... device " to quote all be the explaination that adds function for the device of describing key element and claim; And specifically use arbitrarily " be used for ... device " the key element of quoting do not hope to be understood that device adds the element of function, even this claim has comprised the word of " device ".
Although illustrate and described the present invention to certain preferred embodiments or a plurality of embodiment, obviously, those skilled in the art can expect the modification and the modified example that are equal in reading with when understanding instructions and accompanying drawing.Especially for the various functions of carrying out by above-mentioned key element (parts, assembly, device, form etc.); Only if point out in addition; The term (comprising quoting of " device ") of hoping to be used to describe these key elements corresponding to any key element of the concrete function of the said key element of execution (promptly; Function equivalent), even this key element structurally is different from the open structure of in illustrative illustrative embodiments of the present invention or a plurality of embodiment, carrying out this function.In addition; Although below in several illustrative embodiments only one or more has described concrete characteristic of the present invention; But can be as required and from given or specifically use favourable aspect and consider to arbitrarily, this characteristic is combined with one or more other characteristics of other embodiments.
Claims (15)
1. one kind is divided multiplexing adaptive voice service bearer method based on frame in the TD-SCDMA system, and this method may further comprise the steps:
At the radio network controller place; From preset encoding and decoding speech rate set, select encoding and decoding speech speed and be the user equipment allocation Radio Resource according to the speech business load of network based on radio frames; Wherein, Should preset encoding and decoding speech rate set comprise the first high encoding and decoding speech speed and the second low voice encoding and decoding speed at least; And under the situation of having selected the second low voice encoding and decoding speed, be that unit is respectively at least two Radio Resources that user equipment allocation is same with at least one continuous radio frames; With
At said subscriber equipment place,, carry out the transmission and/or the reception of voice signal based on the selected encoding and decoding speech speed of said radio network controller with based on radio frames institute assigned radio resource.
2. the method for claim 1, wherein at the radio network controller place, further comprise according to the speech business load selection encoding and decoding speech speed of network and based on the step of radio frames distributing radio resource:
Speech business load according to network; From preset encoding and decoding speech rate set, select to be suitable for the encoding and decoding speech speed of this speech business load; Wherein, this preset encoding and decoding speech rate set comprises the first high encoding and decoding speech speed and the second low voice encoding and decoding speed at least;
Coming with one or more radio frames according to selected encoding and decoding speech speed is that unit is one or more user equipment allocation Radio Resource; And
Give said one or more subscriber equipment with selected encoding and decoding speech speed and allocation of radio resources result notification.
3. method as claimed in claim 2; Wherein, At the subscriber equipment place,, carry out the transmission of voice signal and/or the step of reception and further comprise based on the selected encoding and decoding speech speed of said radio network controller with based on radio frames institute assigned radio resource:
Encoding and decoding speech speed based on received is sampled, is encoded voice signal; The speech sample that is obtained is cushioned and carries out rate-matched according to the voice transfer speed of network, and the frame offset value that in based on received allocation of radio resources result, comprises and sending in definite vertical shift period cushioned and through the speech sample of rate-matched; And/or
The frame offset value that in based on received allocation of radio resources result, comprises and receive the voice signal that sends from network in definite vertical shift period, and by received encoding and decoding speech speed this voice signal is decoded.
4. method as claimed in claim 3, wherein, at said subscriber equipment place, with the period that equates with the repetition period of the code channel that comprises among the received allocation of radio resources result be that unit cushions speech sample.
5. method as claimed in claim 4, wherein, the said step of encoding and decoding speech speed of selecting at the radio network controller place comprises:
If the speech business load of network is lower than the threshold value of regulation, then select the said first high encoding and decoding speech speed; With
If the speech business load of network is higher than the threshold value of regulation, then select the said second low voice encoding and decoding speed.
6. method as claimed in claim 5, wherein, said step of joining Radio Resource in radio network controller punishment comprises:
If in the step of said selection encoding and decoding speech speed, selected the said first high encoding and decoding speech speed, then the mode with continuous radio frames is each said user equipment allocation Radio Resource; With
If in the step of said selection encoding and decoding speech speed, selected the said second low voice encoding and decoding speed; Then repetition period and repeat length and the frame offset value through code channel is set suitably is that unit is respectively at least two Radio Resources that user equipment allocation is same with at least one continuous radio frames.
7. like each described method in the claim 2 to 6, wherein, the said first high encoding and decoding speech speed is AMR 12.2kbps, and the said second low voice encoding and decoding speed is AMR 4.75kbps.
8. radio network controller that in the TD-SCDMA system, uses, this radio network controller comprises:
Speech business load monitoring portion, this speech business load monitoring portion is set to the speech business load in the network is monitored;
Encoding and decoding speech rate selection portion; This encoding and decoding speech rate selection portion is set to the monitoring result according to said speech business load monitoring portion; From preset encoding and decoding speech rate set, select to be suitable for the encoding and decoding speech speed of this monitoring result; Wherein, this preset encoding and decoding speech rate set comprises the first high encoding and decoding speech speed and the second low voice encoding and decoding speed at least;
Allocation of radio resources portion; This allocation of radio resources portion is set to the encoding and decoding speech speed selected according to by said encoding and decoding speech rate selection portion; Coming with one or more radio frames is that unit is one or more user equipment allocation Radio Resource; Wherein, Selected in encoding and decoding speech rate selection portion under the situation of the second low voice encoding and decoding speed, it is that unit is respectively at least two Radio Resources that user equipment allocation is same that allocation of radio resources portion is set to at least one continuous radio frames; And
Notice portion, this notice portion are set to the said selected encoding and decoding speech speed of encoding and decoding speech rate selection portion and said allocation of radio resources portion are carried out the result notification of allocation of radio resources and give said subscriber equipment.
9. radio network controller as claimed in claim 8; Wherein, When said speech business load monitoring portion monitors speech business load in the network when being lower than the threshold value of regulation; The said first high encoding and decoding speech speed is selected by said encoding and decoding speech rate selection portion, and said allocation of radio resources portion is each said user equipment allocation Radio Resource with the mode of continuous radio frames
And monitor speech business load in the network when being higher than the threshold value of regulation when said speech business load monitoring portion; The said second low voice encoding and decoding speed is selected by said encoding and decoding speech rate selection portion; And repetition period and repeat length and the frame offset value of said allocation of radio resources portion through code channel is set suitably is that unit is at least two Radio Resources that user equipment allocation is same with at least one continuous radio frames.
10. like claim 8 or 9 described radio network controllers, wherein, the said first high encoding and decoding speech speed is AMR 12.2kbps, and the said second low voice encoding and decoding speed is AMR 4.75kbps.
11. a subscriber equipment that in the TD-SCDMA system, uses, this subscriber equipment comprise encoding and decoding speech portion, buffering and rate-matched portion and receiving and transmitting part, wherein,
Said encoding and decoding speech portion is set to according to the selected encoding and decoding speech speed of system voice signal carried out encoding and decoding,
Said buffering and rate-matched portion are set to cushioning through the coded voice signal of said encoding and decoding speech portion and carrying out rate-matched according to the voice transfer speed of network and handle; The voice signal that will pass through the rate-matched processing subsequently sends to said receiving and transmitting part; With the voice signal that receives from said receiving and transmitting part is gone rate-matched handle and will send to said encoding and decoding speech portion through removing voice signal after rate-matched is handled
Said receiving and transmitting part is set to sending in definite vertical shift period based on frame offset value that system distributed through the voice signal of said buffering with the processing of rate-matched portion; And/or receiving the voice signal that sends from network in definite vertical shift period based on frame offset value that system distributed; And this voice signal sent to said buffering and rate-matched portion
Wherein, said encoding and decoding speech speed is from the group that comprises the first high encoding and decoding speech speed and the second low voice encoding and decoding speed at least, to select,
And wherein, when the said first high encoding and decoding speech speed had been selected by system, said subscriber equipment was by the mode distributing radio resource with continuous radio frames; And when system has selected said second to hang down voice encoding and decoding speed; Said subscriber equipment has been assigned with repetition period and the repeat length and the frame offset value of the code channel of suitable setting, and is unit and the multiplexing same Radio Resource of at least one other subscriber equipment with at least one continuous radio frames.
12. subscriber equipment as claimed in claim 11, wherein, said buffering and rate-matched portion further are set to, and the period that equates with repetition period of the code channel that distributed with system is that unit cushions speech sample.
13. like each described subscriber equipment in the claim 11 to 12, wherein, the said first high encoding and decoding speech speed is that the AMR 12.2kbps and the said second low voice encoding and decoding speed are AMR 4.75kbps.
14. one kind is divided multiplexing adaptive voice service bearer system based on frame in the TD-SCDMA system, it comprises radio network controller and subscriber equipment,
Wherein, Said radio network controller is set to from preset encoding and decoding speech rate set, select encoding and decoding speech speed and be said user equipment allocation Radio Resource based on radio frames according to the speech business load of network; Wherein, Should preset encoding and decoding speech rate set comprise the first high encoding and decoding speech speed and the second low voice encoding and decoding speed at least; And said radio network controller is set under the situation of having selected the second low voice encoding and decoding speed, is that unit is respectively at least two Radio Resources that user equipment allocation is same with at least one continuous radio frames
And wherein, said subscriber equipment is set to carry out the transmission and/or the reception of voice signal based on the selected encoding and decoding speech speed of said radio network controller with based on radio frames institute assigned radio resource.
15. adaptive voice service bearer as claimed in claim 14 system; Wherein, Said radio network controller is each described radio network controller in the claim 8 to 10, and said subscriber equipment is each described subscriber equipment in the claim 11 to 13.
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| CN106817339A (en) * | 2015-11-27 | 2017-06-09 | 中国电信股份有限公司 | Adjust method, transmitting terminal and the system of voice rate |
| CN107170460B (en) * | 2017-06-30 | 2020-12-08 | 深圳Tcl新技术有限公司 | Sound quality adjusting method, system, host terminal and storage medium |
| CN112967735B (en) * | 2021-02-23 | 2024-09-20 | 北京达佳互联信息技术有限公司 | Training method of voice quality detection model and voice quality detection method |
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| CN1411294A (en) * | 2001-09-29 | 2003-04-16 | Lg电子株式会社 | Method for allocation of Walsh code resource |
| CN1432221A (en) * | 2000-03-30 | 2003-07-23 | 高通股份有限公司 | Method and appts. for controlling transmissions of communications system |
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| CN1432221A (en) * | 2000-03-30 | 2003-07-23 | 高通股份有限公司 | Method and appts. for controlling transmissions of communications system |
| CN1411294A (en) * | 2001-09-29 | 2003-04-16 | Lg电子株式会社 | Method for allocation of Walsh code resource |
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