CN101394660B - Method and device for determining downlink sending mode - Google Patents
Method and device for determining downlink sending mode Download PDFInfo
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- CN101394660B CN101394660B CN200710151249A CN200710151249A CN101394660B CN 101394660 B CN101394660 B CN 101394660B CN 200710151249 A CN200710151249 A CN 200710151249A CN 200710151249 A CN200710151249 A CN 200710151249A CN 101394660 B CN101394660 B CN 101394660B
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Abstract
The invention discloses a method for determining a downlink sending mode, which comprises the following steps: a base station at the end receives a service frame transmitted; and when the service frame received comprises a discontinuous speech frame, the base station at the end determines the downlink sending mode to be a discontinuous transmitting mode. By adopting the embodiment of the invention, the base station at the end detects the service frame received, and can determine the downlink sending mode of the base station at the end according to the detecting results, thereby avoiding handover, power controlling and other problems caused by an inaccurate downlink survey report.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly relate to a kind of method and apparatus of definite downlink sending mode.
Background technology
Gsm system (Global System for Mobile Communication; Digital cellular mobile communication systems) according to (the European Telecommunications StandardsInstitute of the ETS committee; ETSI) the GSM standard of formulating develops; Belong to usually said second generation mobile communication technology (Second Generation, 2G).Its exploitation purpose is to let all parts of the world can use a mobile telephone network standard jointly, lets the user use a MS just can manage it all over the whole world.Gsm system except can opening basic voice service, can also open various bearer services, supplementary service and with integrated services digital network (Integrated Service Digital Network, ISDN) relevant miscellaneous service.Gsm system adopts frequency division multiple access (Frequency Division Multiple Access; FDMA)/time division multiple access (Time Division Multiple Access; TDMA) and the multiplex mode of frequency hopping; The frequency recycling rate of waterused is higher, and it has flexible networking structure simultaneously, can satisfy user's different capabilities demand.Gsm system has stronger authentication and encryption function, can guarantee the demand for security of user and network, and system's antijamming capability is stronger, and communication quality is higher.
GSM is a kind of multiservice system, and that can according to the user need provide various forms of communications for the user.Come voice service and data service (or calling non-speech service) difference traditionally.In the voice service, information is speech, and data service transmits the out of Memory that comprises text, image, fax and computer documents etc.And in typical user's conversation on course, the mobile subscriber generally only has time of 40% to be used for conversation, and the most of the time is not transmitted speech information.If the information in the time of therefore will not conversing all sends network to, not only cause resource waste, also can increase the weight of intrasystem interference.
To These characteristics; (Discontinuous Transmission, DTX) function are promptly closed travelling carriage (Mobile Station when the mobile subscriber does not converse can to introduce discontinuous emission at GSM; MS) transmitting power reduces interference level and the purpose that improves system effectiveness thereby reach.In addition, the DTX function can also be saved the power consumption of MS, prolongs the stand-by time of MS.
Therefore, the GSM voice service transmits can be divided into dual mode, and a kind of is the normal transmission pattern, promptly no matter the user whether in speech, carries out coding transmission with the speed of 13kbit/s with speech stream continuously; Another kind is the DTX transmission mode, carries out the speech coding of 13kbit/s in the voice activation phase (effectively speech phase), at the non-active period of speech (non-effective speech phase), adopts the slow coding of about 500bit/s, only transmits the characterisitic parameter of comfort noise.As shown in Figure 1; Be the schematic diagram of DTX pattern, VAD (Voice ActivityDetector) is for voice activation detects, BFI (Bad Frame Indication) is that bad frame identity, TAF are that time adjusting sign, CN are that comfort noise, SP are that speech mark, SID (Silence Descriptor) are noise elimination indication frame.
Under the situation that the DTX transmission mode is opened, voice segments is adopted normal encoding and decoding speech, and non-speech segment is just substituted with background noise, background noise can be represented with bit seldom.Wherein, background noise coding flow process is basic identical with the coding flow process of normal voice signal, behind sample quantization; Every 20ms forms a noise piece with mixed encoder; Noise piece behind the coding also can generate 260bit as blocks of speech, Here it is a SID frame.Therefore the SID frame with speech frame equally also need experience chnnel coding, interweave, encryption and modulated process, for carrying the field of noise message, in 8 continuous bursts, send at last, traditionally, SID frame and speech frame can be referred to as traffic frame.
The send mode of SID frame and speech frame is also incomplete same; In 3GPP 46.031 agreements, stipulate; Under the situation that DTX opens; Although transmitting terminal can produce continuous speech frame and SID frame by the information source coding/decoding module, it is not to send these all frames to air interface, but three kinds of frames below only sending:
1) frame of speech frame (all frames marked with SP=1), the carrying out of assurance normal talking;
2) the SID frame behind the speech frame (the first one with SP=0 after one or moreframes with SP=1) does not send its SID frame afterwards;
3) the SID frame of TAF=1 (those marked with SP=0 and aligned with theSACCH multiframe structure as described in 45.008) is used for MS and carries out quiet recovery and local measurement.
Further; Global measuring and local measurement to MS are introduced, and no matter whether the up-downgoing of system activates DTX, and base station and MS will accomplish this two kinds of measurements; Give base station controller (Base Station Controller through measurement report with above-mentioned two kinds of reporting measuring result by base station and MS; BSC), and at each slow associated control channel (Slow Associated Control Channel identifies in measurement report SACCH) and whether uses DTX.It still is that local measurement switches, the power control judgement that thereby BSC can select with global measuring according to this measurement report.Global measuring averages for level and the quality to 100 time slots of whole SACCH multiframe period, except 26 multi-frames of totally 4 TCH, idle frame, and parameters such as the energy of MS transmission signal, the error rate for example; Local measurement comprises 8 continuous TCH bursts and 4 bursts that carrying the SACCH of measurement report for level and the quality to 12 time slots averages.
Need to prove: no matter whether used the DTX pattern; Global measuring and local measurement will be carried out in the provisional capital up and down, are opening under the situation of DTX, because data are not often sent in MS and base station; A large amount of SID frames all is omitted and is not sent out; Therefore the result of global measuring is poor in such cases, but this kind situation be owing to can send the SID frame of TAF=1, so the result of local measurement is correct.Closing under the DTX pattern; Because there is not the problem of not sending the SID frame; Therefore the result of global measuring and local measurement is correct under the DTX pattern closing, but because the sample that global measuring is measured is more, so the structure of global measuring measurement is also more accurate.
Four kinds of code encoding/decoding modes are arranged in gsm system; Be respectively: full rate (Full Rate; FR) compress speech, EFR (Enhanced Full Rate; EFR) compress speech, AMR (Adaptive Multi Rate, AMR) compress speech and half rate (Half Rate, HR) compress speech.
Can utilize IP network to carry out the transmission of voice in the gsm system.Like this when two call setup cube all are MS; In order not reduce voice quality, and save the phonetic code converter unit, the GSM network is generally consulted into the speech coding algorithm of two MS identical; And between two MS, set up Transcoder Free Operation (Transcoder Free Operation end to end; TrFo), like this because the speech coding algorithm of two MS is identical, therefore just need not to increase the conversion of any speech coding algorithm at network side.Wherein, the TrFo transparent transmission is set up based on the out-of-band signalling mode, and before call setup, sets up, and adopts under the situation of identical code/decode type calling MS both sides, can realize the transparent transmission of compressed voice.
Yet in the invention process, the inventor finds to have following problem in the above-mentioned technology, comprising: the switch of DTX generally is the parameter of cell-level in gsm system, and the switch of the DTX of different sub-district possible configurations is different.As shown in Figure 2, the sketch map of MS A and MS B conversation, wherein MS A place cell base station A is configured to up DTX and opens, and the cell base station B at MS B place is configured to descending DTX and closes.
Under above-mentioned situation; (perhaps consult if the MS A that calls out is identical with the speech coding of MS B through network side; Make the MS A at above-mentioned two ends identical) with the speech coding of MS B; Then network side will be set up Trfo between the MS at two ends A and MS B, and the speech of MS A is transparent in the sub-district that belongs among the MS B.Because base station A is configured to up DTX and opens, so the uplink service frame that MS A reports includes discontinuous speech frame, SID frame; So the descending traffic frame that the cell base station B at MS B place receives includes discontinuous speech frame, SID frame.If the cell base station B at MS B place is left intact, just the uplink service frame with MS A directly passes through MS B, and existing problems comprise so:
First aspect, because the up DTX of the cell base station A of MS A opens, therefore according to the send mode of above-mentioned SID frame, a SID frame that only can be after air interface is sent speech frame and the SID frame of TAF=1, and other SID frames are not sent out.Yet this moment, and the traffic frame of the MS A that receives of MS B but included discontinuous speech frame, SID frame because the descending DTX of the cell base station B at MS B place but closes.Therefore MS B global measuring at this moment is very inaccurate; And measurement result is very poor (owing to there is a large amount of SID frame that does not send of MS A; So can usually there be the situation of the frame of not receiving that MS A sends in MS B, so MS B will think that wireless transmission quality has problems).MSB gives base station B with reporting measuring result; Base station B indicates that in measurement result this cell downlink DTX is closed condition and reports BSC; Then this moment BSC will think global measuring be exactly the real measured value of MS (as stated; Global measuring when DTX is closed condition and local measurement are all thought correct), can think that according to this measured value the present wireless transmission quality of this MS B has problems, thereby cause a series of problems such as switching, power control.Concrete; The switching problem that causes comprises: BSC has received the measurement report of MS; Whether the channel of judging current MS place according to the as above descending level of the content in the measurement report, up-downgoing quality can continue to keep conversation; If BSC finds the measurement report that MS reports and shows that current talking is relatively poor that will start switching flow, the channel that is fit to that MS is switched to other gets on.The power control that causes specifically comprises: BSC has received the measurement report of mobile phone, and according to the content of measurement report, whether decision MS and base station need change current transmitting power.For example BSC finds that the incoming level that present MS reports is lower, and BSC will let the base station strengthen transmitting power.The incoming level that BSC discovery MS reports is bigger, and the quality of reception is fine, will reduce transmitting power by informing base station, to reduce the interference in the net.
Second aspect; If the algorithm of the MS A of conversation and the encoding and decoding speech of MS B is FR/EFR/HR; Then the base station must be at the SACCH fixed time of multiframe period (moment of TAF=1); Open power and send frame data to MS is fixing, so that MS carries out local measurement, and the quiet recovery under the DTX situation.But MS A is transparent to the traffic frame of the cell base station B at MS B place; Possible base station B does not have data to send to MS B in the moment of TAF=1, and promptly base station B does not receive the data that MS A sends (because the data that MS A sends at this moment are neither speech frame, a SID frame or the SID frame of TAF=1 after neither speech frame) in the moment of TAF=1.Therefore MS B is not owing to receive the base station B data of sending constantly at TAF=1, thereby causes local measurement inaccurate of MS B this moment, and quiet recovery is not prompt enough.
Summary of the invention
The problem that the embodiment of the invention will solve provides a kind of method and apparatus of definite downlink sending mode; Solve because the local terminal base station is different with the switch of telepoint base station up-downgoing DTX; So that the BSC of local terminal base station produces wrong judgement according to global measuring that reports and local measurement, thereby cause problems such as switching, power control.
For achieving the above object, the embodiment of the invention proposes a kind of method of definite downlink sending mode on the one hand, may further comprise the steps:
The local terminal base station receives service frame transmitted;
When the said traffic frame that receives comprised discontinuous speech frame, the local terminal base station confirmed that downlink sending mode is discontinuous emission mode.
On the other hand, the embodiment of the invention also provides a kind of device, comprises receiver module, judge module and control module, and said receiver module is used to receive service frame transmitted; Said judge module is used to judge whether the traffic frame that said receiver module receives is continuous speech frame; Said control module is used for according to said judge module judged result, when said traffic frame is discontinuous speech frame, confirms that downlink sending mode is the DTX pattern.
The technical scheme that the embodiment of the invention disclosed has the following advantages: through the embodiment of the invention local terminal base station traffic frame that receives is detected; Can confirm the downlink sending mode of local terminal base station according to testing result, thus problems such as the switching of avoiding causing, power control because down-run survey report is inaccurate.
Description of drawings
Fig. 1 is the schematic diagram of DTX;
Fig. 2 is the sketch map of MS A and MS B conversation;
Fig. 3 fixs the topology example figure of capable sending mode device really for the embodiment of the invention;
The flow example figure of the method for a kind of definite downlink sending mode that Fig. 4 is disclosed for the embodiment of the invention one;
The flow example figure of the method for a kind of definite downlink sending mode that Fig. 5 is disclosed for the embodiment of the invention two;
The flow example figure of the method for a kind of definite downlink sending mode that Fig. 6 is disclosed for the embodiment of the invention three.
Embodiment
The embodiment of the invention detects the traffic frame that the telepoint base station that receives sends through the local terminal base station; Said traffic frame comprises speech frame or SID frame at least; If this traffic frame comprises continuous speech frame; Then the telepoint base station of this traffic frame of explanation transmission is not opened up DTX, so the local terminal base station is sent continuous speech frame according to the normal transmission pattern to MS; If this traffic frame comprises discontinuous speech frame, then the telepoint base station of this traffic frame of explanation transmission is opened up DTX, so send according to the DTX transmission mode local terminal base station.Through local terminal base station above-mentioned automatic detection and self-adaptive processing, can decide its descending DTX whether to open according to the traffic frame that receives, thus problems such as the switching of having avoided causing, power control because the down-run survey report is inaccurate.
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail:
As shown in Figure 3, fix the topology example figure of capable sending mode device really for the embodiment of the invention.This device 1 comprises receiver module 11, judge module 12 and control module 13.Receiver module 11 is used for receiving through the core net service frame transmitted, i.e. the uplink service frame of telepoint base station, if the up DTX of telepoint base station closes, then installing 1, what receive is exactly that telepoint base station sends continuous speech frame according to the normal transmission pattern; If the descending DTX of telepoint base station opens; Then install speech frame that 1 traffic frame that receives just comprises that to be telepoint base station send according to the DTX transmission mode and SID frame (the SID frame when comprising a SID frame and the TAF=1 behind the speech frame); The situation of certain above-mentioned SID frame can be to being example with the EFR/FR/HR speech coding algorithm; Speech coding algorithm for other also can be received different frames; For example for the AMR speech coding algorithm, telepoint base station can also can be transmitted speech frame, SIDFirst frame, SIDUpdate frame and the Onset frame of far-end MS, wherein; Receive SIDFirst frame, SIDUpdate frame and Onset frame continuously if install 1, explain that then the up DTX of telepoint base station opens.Judge module 12 is used to judge whether the traffic frame that receiver module 11 receives is continuous speech frame, can adopt different judgment modes according to the difference of the speech coding algorithm that adopts.For example for the EFR/FR/HR speech coding algorithm; If comprise the SID frame in the traffic frame that receiver module 11 receives; Then can think that with regard to explanation the traffic frame that device 1 receives is discontinuous speech frame (in a single day because occur the SID frame in this case, then just explanation can think that telepoint base station is that up DTX is in opening); For the AMR speech coding algorithm, receive SIDFirst frame, SIDUpdate frame and Onset frame continuously equally, can explain also that then the traffic frame that device 1 receives is discontinuous speech frame if install 1.Yet need to prove that EFR/FR/HR or AMR speech coding algorithm that the embodiment of the invention is mentioned are for the ease of understanding, therefore any conversion about speech coding algorithm all can be contained by the present embodiment practical range.Wherein preferably; In one embodiment; After device 1 judgement receives the SID frame or receives SIDFirst frame, SIDUpdate frame and Onset frame continuously; Also need further judge between SID frame or the SIDUpdate frame whether receive speech frame, if do not receive speech frame then explain that the traffic frame that device 1 receives is discontinuous speech frame.If because install 1 separately according to whether receiving the SID frame or receive SIDFirst frame, SIDUpdate frame and Onset frame continuously; Device 1 is easy to occur erroneous judgement; For example think normal speech frame by mistake to be the SID frame, thereby make the incorrect definite downlink sending mode of device 1 possibility.Downlink sending mode determination module control module 13 is used for the judged result according to traffic frame judge module judge module 12; When traffic frame judge module judge module 12 judges that traffic frame is discontinuous speech frame; Confirm that downlink sending mode is the DTX pattern, be about to device 1 descending transmit status and be set to descending DTX transmit status.Descending DTX transmit status is: device 1 sends to MS with speech frame of receiving and SID frame (maybe can certainly be SIDFirst frame, SIDUpdate frame and Onset frame); There is not speech frame or SID frame when MS sends, if this MS is on device 1 non-main carrier frequency then close the power of this non-main carrier frequency; If this MS then sends infilled frame to this MS on the main carrier frequency of device 1, the MS of being convenient to other measures the signal strength signal intensity of this main B carrier frequency, the convenient switching.If traffic frame judge module judge module 12 is judged when traffic frames are continuous speech frame, is then sent according to the normal transmission pattern.
Wherein, As shown in Figure 3; Device 1 also may further include mode state identification module 14, is used for after control module 13 confirms that downlink sending mode is the DTX pattern, in the measurement report that MS reports, identifies the downlink sending mode state (descending DTX opens) of this moment; And this measurement report reported BSC, for BSC according to measurement report switch, the power control judgement.
Wherein, Preferably; Whether the embodiment of the invention is that discontinuous speech frame adopts different judgment modes for the different speech coding algorithm to traffic frame; For example for the EFR/FR/HR speech coding algorithm, can judge in this traffic frame sequence and comprise discontinuous speech frame according to comprising the SID frame in the traffic frame that whether receives; And, then can receive SIDFirst frame, SIDUpdate frame and Onset frame continuously through installing 1 for the AMR speech coding algorithm, judge in this traffic frame frame sequence whether comprise discontinuous speech frame.Therefore judge module 12 can further include SID frame judgement submodule 121 and/or AMR algorithm judgement submodule 122; The SID frame judges that submodule 121 is used for judging whether the traffic frame of receiving comprises the SID frame; If comprise said SID frame, then judge to comprise discontinuous speech frame in the traffic frame sequence; The AMR algorithm judges that submodule 122 is used for judging whether the traffic frame of receiving comprises SIDFirst frame, SIDUpdate frame and Onset frame continuously; If comprise SIDFirst frame, SIDUpdate frame and Onset frame in this traffic frame of receiving continuously, judge that then this traffic frame is discontinuous speech frame.
Wherein, as shown in Figure 3, preferably, device 1 can further include the SID frame and keeps module 15 and SID frame sending module 16, is used to solve because the base station inaccurate problem of local measurement that free of data causes to the MS transmission when TAF=1.The SID frame keeps module, is used to keep up-to-date SID frame.Device 1 can directly be issued MS with the traffic frame of receiving after definite downlink sending mode is the DTX pattern, equally also can first SID frame behind the speech frame also be issued MS, can the up-to-date SID frame of receiving be preserved but install 1.SID frame sending module 16 is used at descending TAF=1, and when not receiving speech frame, the SID frame that keeps is sent to MS, makes MS to carry out local measurement according to this SID frame, thereby avoids the inaccurate problem of local measurement.
It is understandable that; (or described in present embodiment) shown in the accompanying drawing 3 device 1 only is schematic; The wherein said unit that shows as separating component can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Also can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.
Said apparatus 1 through the embodiment of the invention; Can the traffic frame that receive be detected; And confirm the downlink sending mode of local terminal base station according to testing result; Thereby avoid causing the problems such as switching, power control of BSC, have a strong impact on user experience and network operation because down-run survey report is inaccurate.
As shown in Figure 4, disclose with the embodiment of the invention that to fix capable sending mode device really corresponding, for solving same type of technical problem, the embodiment of the invention one has disclosed a kind of flow example figure of method of definite downlink sending mode, may further comprise the steps:
Step S401, the local terminal base station receives the traffic frame that network side passes down, and promptly telepoint base station is to the traffic frame of local terminal base station transmission.If the up DTX of telepoint base station closes, then the traffic frame that receives of local terminal base station is exactly that telepoint base station sends continuous speech frame according to the normal transmission pattern; If the descending DTX of telepoint base station opens; The then traffic frame that receives of local terminal base station speech frame that to be exactly telepoint base station send according to the DTX transmission mode and SID frame (the SID frame when comprising a SID frame and the TAF=1 behind the speech frame); The situation of certain above-mentioned SID frame is to be example with the EFR/FR/HR speech coding algorithm; Speech coding algorithm for other can also be received different frames; For example for the AMR speech coding algorithm, telepoint base station can be transmitted speech frame, SIDFirst frame, SIDUpdate frame and the Onset frame of far-end MS, enumerates no longer one by one here.
Step S402, whether the traffic frame that the local terminal base station judges receives comprises continuous speech frame, and whether the base station comprises continuous speech frame according to the traffic frame that receives is done different processing respectively, as can be according to the processing of following step S403 or S404.Wherein the difference according to the speech coding algorithm that adopts adopts different judgment modes; Yet embodiment of the invention purpose is detecting and self-adaptive processing according to the traffic frame that receives with making the local terminal base station; Thereby avoid the inaccurate problem of descending examining report; Therefore the embodiment of the invention should not be limited among the concrete speech coding algorithm, and the variation of the speech coding algorithm of any employing also should be embodiment of the invention protection range and contains.
Step S403 when the traffic frame sequence of receiving when the base station comprises continuous speech frame, then sends continuous speech frame according to the normal transmission pattern to MS.
Step S404, if traffic frame comprises discontinuous speech frame, then the local terminal base station confirms that downlink sending mode is the DTX pattern, the transmit status that is about to the local terminal base station down is set to descending DTX transmit status.Descending DTX transmit status can for: the local terminal base station sends to MS with speech frame of receiving and SID frame (or SIDFirst frame, SIDUpdate frame and Onset frame); When not having speech frame or SID frame when MS sends, judge this MS whether on main carrier frequency, if this MS is on the non-main carrier frequency of local terminal base station then close the power of this non-main carrier frequency; If this MS on the main carrier frequency of local terminal base station, then can send infilled frame to this MS.
Step S405, the local terminal base station identifies the downlink sending mode state of local terminal base station this moment in measurement report.After the local terminal base station confirms that downlink sending mode is the DTX pattern; In the measurement report that MS reports, identify the downlink sending mode state (promptly being designated descending DTX opening) of this moment; And this measurement report reported BSC, for BSC according to measurement report switch, the power control judgement.
Through the embodiment of the invention local terminal base station traffic frame that receives is detected, can confirm the downlink sending mode of local terminal base station, thereby avoid causing the problems such as switching, power control of SBC because down-run survey report is inaccurate according to testing result.
Below, the embodiment of the invention will be that example is described above-mentioned method of fixing capable sending mode really with EFR/FR/HR or AMR speech coding algorithm.The embodiment of the invention is that example is described just to carrying out complete understanding to the thought that the embodiment of the invention embodies with EFR/FR/HR or AMR speech coding algorithm, can not therefore think that the embodiment of the invention is merely able to solve the technological deficiency that exists in EFR/FR/HR or the AMR speech coding algorithm.
As shown in Figure 5; Really fix the flow example figure of the method for capable sending mode for the embodiment of the invention two; This embodiment is that example is described with the EFR/FR/HR speech coding algorithm, and the downlink sending mode of local terminal base station is the DTX closed condition, and this embodiment may further comprise the steps:
Step S501, the local terminal base station receives the traffic frame that telepoint base station transmits.If the up DTX of telepoint base station closes, then the traffic frame that receives of local terminal base station is exactly that telepoint base station sends continuous speech frame according to the normal transmission pattern; If the descending DTX of telepoint base station opens, then the traffic frame that receives of local terminal base station comprises speech frame that telepoint base station sends according to the DTX transmission mode and SID frame (the SID frame when comprising a SID frame and the TAF=1 behind the speech frame).
Whether step S502 comprises the SID frame in the traffic frame that the local terminal base station judges receives.Execution in step S503 or S504 can be distinguished according to condition of different in the local terminal base station.
Step S503 if do not comprise the SID frame in the traffic frame that receives, judges that then this traffic frame sequence is continuous speech frame, so the local terminal base station is sent continuous speech frame according to the normal transmission pattern to MS.
Step S504 if comprise the SID frame in the traffic frame that receives, judges that then this traffic frame comprises discontinuous speech frame, so the local terminal base station confirms that downlink sending mode is the DTX pattern, and the transmit status that is about to the local terminal base station down is set to descending DTX transmit status.Descending DTX transmit status comprises: the local terminal base station sends to MS with the speech frame of receiving or SID frame (the SID frame when comprising a SID frame and the TAF=1 behind the speech frame); There is not speech frame or SID frame when MS sends, if this MS is on the non-main carrier frequency of local terminal base station then close the power of this non-main carrier frequency; If this MS on the main carrier frequency of local terminal base station, then sends infilled frame to this MS.Wherein, Preferably; Can in the traffic frame that judgement receives, comprise after the SID frame; Further judge whether receive speech frame between the SID frame,, thereby avoid the local terminal base station to think normal speech frame by mistake to be SID frame and the erroneous judgement that causes if do not receive speech frame then explain that the traffic frame that the local terminal base station receives comprises discontinuous speech frame.
Step S505, the local terminal base station keeps the up-to-date SID frame that receives.Make it can be, and when not receiving the traffic frame of telepoint base station, the SID frame of said reservation is sent to mobile station MS at descending TAF=1.Make MS to carry out local measurement, thereby avoid the inaccurate problem of local measurement according to this SID frame.
Further, step S506, the local terminal base station can identify the downlink sending mode state of local terminal base station this moment in measurement report.After the local terminal base station confirms that downlink sending mode is the DTX pattern; In the measurement report that MS reports, identify the downlink sending mode state (descending DTX opens) of this moment; And this measurement report reported BSC, for BSC according to measurement report switch, the power control judgement.
For the EFR/FR/HR speech coding algorithm; Through whether comprising the judgement of SID frame in the traffic frame of the above embodiment of the present invention to reception; Can obtain the local terminal base station receives traffic frame and whether comprises continuous speech frame (whether the up DTX of telepoint base station opens); Confirm the downlink sending mode of local terminal base station according to judged result, thereby problems such as the switching of avoiding causing because down-run survey report is inaccurate, power control the decline of user experience and the difficulty of network O&M have been avoided.
As shown in Figure 6; The flow example figure of the method for a kind of definite downlink sending mode that is disclosed for the embodiment of the invention three; Present embodiment is that example is described with the AMR speech coding algorithm, and being in the DTX closed condition with the downlink sending mode of local terminal base station is example, and this embodiment may further comprise the steps:
Step S601, the local terminal base station receives the traffic frame that telepoint base station transmits.If the up DTX of telepoint base station closes, then the traffic frame that receives of local terminal base station is that telepoint base station sends continuous speech frame according to the normal transmission pattern; If the descending DTX of telepoint base station opens, then the traffic frame that receives of local terminal base station is exactly speech frame, SIDFirst frame, SIDUpdate frame and the Onset frame that telepoint base station sends according to the DTX transmission mode.
Whether step S602 comprises SIDFirst frame, SIDUpdate frame and Onset frame continuously in the traffic frame that the local terminal base station judges receives, the local terminal base station can be carried out following step S603 or S604 respectively according to different state.
Step S603; If do not comprise SIDFirst frame, SIDUpdate frame and Onset frame in the traffic frame that receives continuously; Then judge in this traffic frame sequence to comprise continuous speech frame, so the local terminal base station is sent continuous speech frame according to the normal transmission pattern to MS.
Step S604; If comprise SIDFirst frame, SIDUpdate frame and Onset frame in the traffic frame that receives continuously; Judge that then this traffic frame is discontinuous speech frame; Therefore the local terminal base station confirms that downlink sending mode is discontinuous emission DTX pattern, and the transmit status that is about to the local terminal base station down is set to descending DTX transmit status.Descending DTX transmit status is: the local terminal base station sends to MS with the speech frame of receiving, SIDFirst frame, SIDUpdate frame and Onset frame; There is not speech frame, SIDFirst frame, SIDUpdate frame and Onset frame when MS sends, if this MS is on the non-main carrier frequency of local terminal base station then close the power of this non-main carrier frequency; If this MS on the main carrier frequency of local terminal base station, then sends infilled frame to this MS.Wherein preferably; In one embodiment; In order to prevent that erroneous judgement from appearring in the local terminal base station; After in local terminal base station judges traffic frame, comprising SIDFirst frame, SIDUpdate frame and Onset frame continuously, in the time of also need judging between the SIDUpdate frame no speech frame again, can think that this traffic frame is discontinuous speech frame.
Further, step S605, the local terminal base station can identify the downlink sending mode state of local terminal base station this moment in measurement report.After the local terminal base station confirms that downlink sending mode is the DTX pattern; In the measurement report that MS reports, identify the downlink sending mode state (descending DTX opens) of this moment; And this measurement report reported BSC, for BSC according to measurement report switch, the power control judgement.
For the AMR speech coding algorithm; Through the technical scheme in the above embodiment of the present invention; To whether comprising the judgement of SIDFirst frame, SIDUpdate frame and Onset frame in the traffic frame that receives continuously; Can access the local terminal base station receives traffic frame and whether comprises continuous speech frame (whether the up DTX that also can be described as telepoint base station opens); Confirm the downlink sending mode of local terminal base station according to judged result, thereby avoid causing the problems such as switching, power control of SBC because down-run survey report is inaccurate.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product can be stored in the storage medium, like ROM/RAM, magnetic disc, CD etc., comprises that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.”
The above only is that the present invention of thinking of present inventor is important or preferred embodiment; Should be understood that; For those skilled in the art; Under the prerequisite of the principle of the technical scheme that does not break away from various embodiments of the present invention and disclosed, can also make some improvement and retouching or the replacement of equivalent technologies characteristic fully, these improvement and retouching or the replacement of equivalent technologies characteristic also should be regarded as within protection scope of the present invention.
Claims (8)
1. the method for a definite downlink sending mode is characterized in that, may further comprise the steps:
The local terminal base station receives service frame transmitted;
When the said traffic frame that receives comprised discontinuous speech frame, said local terminal base station confirmed that downlink sending mode is discontinuous emission mode;
Said local terminal base station confirms that downlink sending mode is after the discontinuous emission mode, also comprises: the downlink sending mode state that in measurement report, identifies said local terminal base station this moment.
2. confirm the method for downlink sending mode according to claim 1, it is characterized in that, comprising:
When comprising the SID frame in the said traffic frame that receive said local terminal base station, judge that then said traffic frame comprises discontinuous speech frame.
3. confirm the method for downlink sending mode according to claim 1, it is characterized in that, comprising:
When comprising SIDFirst frame, SIDUpdate frame and Onset frame continuously in the said traffic frame that receive said local terminal base station, judge that then said traffic frame comprises discontinuous speech frame.
4. confirm the method for downlink sending mode according to claim 1, it is characterized in that said local terminal base station confirms that downlink sending mode is after the discontinuous emission mode, and is further comprising the steps of:
Said local terminal base station keeps the up-to-date SID frame that receives;
At descending TAF=1, and when not receiving speech frame, the SID frame of said reservation is sent to mobile station MS.
5. the device of a definite downlink sending mode is characterized in that, comprising:
Receiver module, judge module, control module and mode state identification module;
Said receiver module is used to receive service frame transmitted;
Said judge module is used to judge whether the traffic frame that said receiver module receives comprises continuous speech frame;
Said control module is used for the judged result according to said judge module, when said traffic frame comprises discontinuous speech frame, confirms that downlink sending mode is discontinuous emission mode;
Said mode state identification module is used for after said control module confirms that downlink sending mode is the DTX pattern, in measurement report, identifies the downlink sending mode state of this moment.
6. like the device of the said definite downlink sending mode of claim 5; It is characterized in that said judge module comprises SID frame judgement submodule, is used for judging whether the said traffic frame of receiving comprises the SID frame; If comprise said SID frame, judge that then said traffic frame comprises discontinuous speech frame.
7. like the device of claim 5 or 6 said definite downlink sending modes; It is characterized in that; Said judge module also comprises AMR algorithm judgement submodule; Be used for judging whether the said traffic frame of receiving comprises SIDFirst frame, SIDUpdate frame and Onset frame continuously,, judge that then said traffic frame comprises discontinuous speech frame if comprise SIDFirst frame, SIDUpdate frame and Onset frame in the said traffic frame continuously.
8. like the device of the said definite downlink sending mode of claim 5, it is characterized in that, comprise that also the SID frame keeps module and SID frame sending module,
Said SID frame keeps module, is used to keep the up-to-date SID frame that receives;
Said SID frame sending module is used at descending TAF=1, and when not receiving speech frame, said SID frame is kept the SID frame that module keeps send to MS.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710151249A CN101394660B (en) | 2007-09-17 | 2007-09-17 | Method and device for determining downlink sending mode |
| PCT/CN2008/072383 WO2009036703A1 (en) | 2007-09-17 | 2008-09-17 | A method and apparatus for determining the downlink transmission mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200710151249A CN101394660B (en) | 2007-09-17 | 2007-09-17 | Method and device for determining downlink sending mode |
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| CN101394660A CN101394660A (en) | 2009-03-25 |
| CN101394660B true CN101394660B (en) | 2012-09-05 |
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| CN200710151249A Expired - Fee Related CN101394660B (en) | 2007-09-17 | 2007-09-17 | Method and device for determining downlink sending mode |
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| CN (1) | CN101394660B (en) |
| WO (1) | WO2009036703A1 (en) |
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| US9263063B2 (en) * | 2010-02-25 | 2016-02-16 | Telefonaktiebolaget L M Ericsson (Publ) | Switching off DTX for music |
| CN101894558A (en) * | 2010-08-04 | 2010-11-24 | 华为技术有限公司 | Lost frame recovering method and equipment as well as speech enhancing method, equipment and system |
| US9713091B2 (en) * | 2012-06-12 | 2017-07-18 | Nokia Solutions And Networks Oy | Radio link failure information |
| WO2014100927A1 (en) * | 2012-12-24 | 2014-07-03 | 华为技术有限公司 | Channel allocation method, device, base station, and system |
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| CN1217840A (en) * | 1997-01-24 | 1999-05-26 | 诺基亚电信公司 | Power control method of discontinuous transmission |
| CN1221267A (en) * | 1997-12-20 | 1999-06-30 | 摩托罗拉有限公司 | Method and apparatus for discontinuous transmission |
| CN1277758A (en) * | 1998-09-09 | 2000-12-20 | 诺基亚网络有限公司 | Transmission method and radio system |
| US6347081B1 (en) * | 1997-08-25 | 2002-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Method for power reduced transmission of speech inactivity |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2354409B (en) * | 1998-06-08 | 2003-01-22 | Ericsson Telefon Ab L M | System for elimination of audible effects of handover |
| US6631139B2 (en) * | 2001-01-31 | 2003-10-07 | Qualcomm Incorporated | Method and apparatus for interoperability between voice transmission systems during speech inactivity |
| CN1136745C (en) * | 2001-07-18 | 2004-01-28 | 华为技术有限公司 | Method for implementing multi-language coding-decoding in universal mobile communication system |
| US6832195B2 (en) * | 2002-07-03 | 2004-12-14 | Sony Ericsson Mobile Communications Ab | System and method for robustly detecting voice and DTX modes |
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2007
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217840A (en) * | 1997-01-24 | 1999-05-26 | 诺基亚电信公司 | Power control method of discontinuous transmission |
| US6347081B1 (en) * | 1997-08-25 | 2002-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Method for power reduced transmission of speech inactivity |
| CN1221267A (en) * | 1997-12-20 | 1999-06-30 | 摩托罗拉有限公司 | Method and apparatus for discontinuous transmission |
| CN1277758A (en) * | 1998-09-09 | 2000-12-20 | 诺基亚网络有限公司 | Transmission method and radio system |
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| WO2009036703A1 (en) | 2009-03-26 |
| CN101394660A (en) | 2009-03-25 |
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