CN101409598A - Talking method and apparatus - Google Patents
Talking method and apparatus Download PDFInfo
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- CN101409598A CN101409598A CNA2007101635825A CN200710163582A CN101409598A CN 101409598 A CN101409598 A CN 101409598A CN A2007101635825 A CNA2007101635825 A CN A2007101635825A CN 200710163582 A CN200710163582 A CN 200710163582A CN 101409598 A CN101409598 A CN 101409598A
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Abstract
The invention discloses a communication method and a device thereof; the method comprises: detecting whether the speed of the downward received even number of voice frame meets the scheduled condition; if meeting the scheduled condition, the speed in the upward sent voice frame is requested to delay the odd number of time of the voice frame; and the upward voice frame sends the delayed speed request. In the background technology, when the speed of the even number of voice frame is not consistent with that of the previously downward sent voice frame, the voice frame can not be transmitted by the network side; By adopting the if the communication method and the device thereof which are disclosed by the embodiment of the invention, when the speed of the downward received even number of voice frame meets the scheduled condition, the speed in the upward sent voice frame is requested to delay the odd number of time of the voice frame by the network side. Therefore, the downward received even number of voice frame is transformed into the odd number of the voice frame; after that, the network side can directly send the voice frame downward to a terminal, thus realizing the reliable transmission of voice and improving the quality of voice communication.
Description
Technical field
The present invention relates to the communications field, particularly a kind of call method and device.
Background technology
At global system for mobile communications (Global System for Mobile communication, GSM) in, voice communication can be adopted adaptive multi-rate (Adaptive Multi Rate, AMR) encoding and decoding business realizing, in the once conversation of self-adaption multi-speed encoding/decoding, speed can according to circumstances be adjusted, for example, mobile phone can in speech frame, add encoder modes indication (Codec Mode Indication, CMI), CMI is used to indicate the speed of this speech frame; Mobile phone can add the encoder modes request in speech frame (CodecMode Request, CMR), CMR is used to indicate the code rate of opposite end.In order to dwindle frame length and to improve efficiency of transmission, CMI and CMR can adopt the mode of alternate intervals to transmit, pass CMI as first frame, second frame passes CMR, the 3rd frame passes CMI, and the 4th frame passes CMR, and the CMI acquiescence of second frame equals the CMI of first frame, the CMI acquiescence of the 4th frame equals the CMI of the 3rd frame, and the speed that also promptly transmits this frame of CMR is consistent with the frame rate that former frame transmits CMI.
At voice communication Internet protocol (Internet Protocol, IP) after the change, network side sends the voice IP bag that receives to mobile phone, CMI and CMR are encapsulated in the voice IP bag, and the speech frame between network side and the mobile phone adopts the mode of alternate intervals to transmit CMI and CMR, if send the moment of CMR to mobile phone at network side, the CMI of the voice IP bag that network side receives is different with the CMI of former frame voice IP bag, then network side can't send to mobile phone with speech frame, thereby influence the quality of voice communication, even make break in speech communications.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of call method and device, realizes the reliable transmission of voice, improves the quality of voice communication.
The embodiment of the invention provides a kind of method of conversation, and this method comprises:
Detect the descending even number speech frame rates that receives and whether satisfy predetermined condition;
When satisfying described predetermined condition, then the rate request in the upward sent voice frame is postponed the odd number of time of speech frame;
Described rate request behind the up transmission lag.
The embodiment of the invention also provides a kind of device of conversation, and this device comprises:
First detecting unit is used to detect the descending even number speech frame rates that receives and whether satisfies predetermined condition;
Delay cell if be used for satisfying predetermined condition, then postpones the rate request in the upward sent voice frame odd number of time of speech frame;
Transmitting element is used for the described rate request behind the up transmission lag.
In the background technology, if the speed of the speed of even number speech frame and last descending transmission speech frame is inconsistent, then network side can't transmit this speech frame, adopt a kind of call method of the embodiment of the invention and device, when the descending speed that receives the even number speech frame satisfies predetermined condition, network side postpones the rate request in the upward sent voice frame odd number of time of speech frame, like this, the even number speech frame of descending reception can be converted to the odd number speech frame, network side just can be directly with the descending terminal that sends to of speech frame after the conversion, thereby realize the reliable transmission of voice, improve the quality of voice communication.
Description of drawings
Fig. 1 is the schematic flow sheet of the method embodiment one of conversation provided by the invention;
Fig. 2 is the schematic flow sheet of sight one among the method embodiment two of conversation provided by the invention;
Fig. 3 is the schematic flow sheet of sight two among the method embodiment two of conversation provided by the invention;
Fig. 4 is the schematic flow sheet of sight three among the method embodiment two of conversation provided by the invention;
Fig. 5 is the structural representation of the device embodiment of conversation provided by the invention.
Embodiment
Embodiment one has disclosed a kind of method of conversation, and referring to Fig. 1, this method comprises:
101, detect the descending even number speech frame rates that receives and whether satisfy predetermined condition;
Can descendingly receive the frame number of speech frame and the mode of speed by writing down, if the frame number of current descending reception speech frame is an even number, then relatively whether the speed of this speech frame satisfies predetermined condition.
Predetermined condition comprises:
First kind of predetermined condition: descendingly receive the even number speech frame rates and the last descending speech frame rates that receives is inconsistent;
Or second kind of predetermined condition: in the given time, descending receive the 1st consistent with the last descending speech frame rates that receives to N even number speech frame rates; Afterwards, descendingly receive N+1 to the M even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Afterwards, descending to receive M+1 even number speech frame rates consistent with the last descending speech frame rates that receives, and wherein, N, M are natural number, and N is greater than or equal to 1, and M is greater than or equal to (N+1).
Promptly in second kind of predetermined condition, for example as, the first even number speech frame with lastly descendingly receive that speech frame rates is consistent, the second even number speech frame and lastly descendingly receive that speech frame rates is inconsistent, the 3rd even number speech frame and the last descending speech frame rates unanimity that receives; Perhaps, also can be first, second, third and fourth,,, N even number speech frame is consistent with the last descending speech frame rates that receives, N+1, N+2,,, M even number speech frame and the last descending speech frame rates that receives be inconsistent, M+1 even number speech frame is consistent with the last descending speech frame rates that receives.
The mode of the frame difference between voice frame number that can be by determining up transmission and the voice frame number of corresponding descending reception, judge whether the descending speed that receives the even number speech frame satisfies predetermined condition:
If the speech frame rates of the even number speech frame of up transmission and last up transmission is inconsistent, and the voice frame number of up transmission is an odd number with frame difference between the voice frame number of corresponding descending reception, judges that then the speed of descending speed that receives the even number speech frame and last descending transmission speech frame is inconsistent; Perhaps, if the speech frame rates of the odd number speech frame of up transmission and last up transmission is inconsistent, and the voice frame number of up transmission is an even number with frame difference between the voice frame number of corresponding descending reception, judges that then current descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent; Except above two kinds of situations, the current descending speed that receives the even number speech frame is consistent with the last descending speed that receives speech frame.
Descending receive first consistent with the last descending speech frame rates that receives to N even number speech frame rates; Afterwards, descendingly receive N+1 to the M even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Afterwards, the descending M+1 even number speech frame rates that receives descendingly receives consistent also can the adopting in a like fashion of speech frame rates and judges with last.
Wherein, the mode of the frame difference between the voice frame number of the voice frame number of determining up transmission and corresponding reception can for:
Sense channel situation, i.e. the time-delay situation of sense channel;
According to the time-delay situation of passage, the voice frame number of determining up transmission is poor with the frame between the voice frame number of corresponding descending reception.
The scheduled time is greater than the twice of frame difference.
If 102 satisfy predetermined condition, then the rate request in the upward sent voice frame is postponed the odd number of time of speech frame;
The mode that the odd number of time that rate request in the upward sent voice frame is postponed speech frame can adopt the rate request with last upward sent voice frame to repeat to send odd number time realizes.
103, the rate request behind the up transmission lag.
In the background technology, if the speed of the speed of even number speech frame and last descending transmission speech frame is inconsistent, then network side can't transmit this speech frame, the call method and the device that adopt the embodiment of the invention to disclose, network side is by judging whether the descending speed that receives the even number speech frame satisfies predetermined condition, if satisfy predetermined condition, the odd number of time that then rate request in the upward sent voice frame is postponed speech frame, like this, the even number speech frame of descending reception can be converted to the odd number speech frame, network side just can be directly with the descending terminal that sends to of speech frame after the conversion, thereby realize the reliable transmission of voice, improve the quality of voice communication.
Optionally, if after adjusting, the descending even number speech frame rates that receives still satisfies predetermined condition, then can write down this situation, and withdraw from adjustment.
Embodiment two, the method of the conversation that embodiment one discloses can be applied in the voice communication of variable Rate, in the present embodiment, the method for the conversation that embodiment one is disclosed is applied in the self-adaption multi-speed encoding/decoding voice communication of global system for mobile communications, and its specific implementation comprises:
Implement sight one, referring to Fig. 2, when voice communication adopts base station and gateway to realize:
201, the frame between the voice frame number of the voice frame number of determining up transmission and corresponding descending reception is poor:
The base station receives the speech frame of the up or system descending of mobile phone, after voice channel is set up, the base station is to the up transmission of gateway CMR, send rule for being unit with two frames, first, three, five ... frame is corresponding constantly from the up CMR frame of receiving of mobile phone constantly, be labeled as odd number (O) frame constantly, second, four, six ... frame is corresponding constantly to be labeled as even number (E) frame constantly from the up CMI frame of receiving of mobile phone constantly, chooses two speed, for example 7.4K and 6.7K, replace transmission successively, promptly first, two frame rate are 7.4k, the 3rd, four frame rate are 6.7k, the 5th, six frame rate are 7.4k, the rest may be inferred, and like this, gateway is after receiving the up CMR request in base station, the corresponding change of meeting also promptly changes the CMI of gateway to the base station down speech frame to the code rate of base station down.
The base station begins to monitor from the descending CMI situation of change of receiving of gateway, and carries out corresponding judgement after the CMR that the up transmission rule of gateway changes, and comprising:
Whether the base station is judged consistent with the descending speech frame CMI that receives of previous frame from the current descending speech frame CMI that receives of gateway, if the frame number of the current descending speech frame of receiving is an odd number, and current descending speech frame CMI that receives and the descending speech frame CMI that receives of previous frame are inconsistent, illustrate that then the frame difference that voice channel postpones to cause is an even number, if instead consistent, then the frame difference is an odd number; Perhaps, if the frame number of the current descending speech frame of receiving is an even number, and the current descending speech frame CMI that receives and the descending speech frame CMI that receives of previous frame are inconsistent, illustrate that then the frame difference that voice channel postpones to cause is an odd number, if instead consistent, then the frame difference is an even number.
202, judge whether the speed receive the even number speech frame is consistent with the last speed that receives speech frame:
If the base station is inconsistent to the speech frame rates of the even number speech frame of the up transmission of gateway and last up transmission, and the voice frame number of up transmission is odd number with corresponding descending reception from the frame difference between the voice frame number of gateway, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent; Perhaps, if the base station is inconsistent to the speech frame rates of the odd number speech frame of the up transmission of gateway and last up transmission, and the voice frame number of up transmission is with corresponding to receive from the frame difference between the descending voice frame number of gateway be even number, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent.
If 203 is inconsistent, then the rate request in the upward sent voice frame is postponed the odd number of time of speech frame;
The rate request of last upward sent voice frame can be repeated send odd number.
204, the rate request behind the transmission lag.
Implement sight two, referring to Fig. 3, the process that voice communication realizes in first base station and second base station:
301, the frame between the voice frame number of the voice frame number of determining up transmission and corresponding descending reception is poor:
First base station receives the speech frame of up or second base station down of mobile phone, after voice channel is set up, first base station is to the up transmission in second base station CMR, send rule for being unit with two frames, first, three, five ... frame is corresponding constantly from the up CMR frame of receiving of mobile phone constantly, be labeled as the O frame constantly, second, four, six ... frame is corresponding constantly from the up CMI frame of receiving of mobile phone constantly, be labeled as the E frame constantly, choose two speed, for example 7.4K and 6.7K replace transmission successively, promptly first, two frame rate are 7.4k, the 3rd, four frame rate are 6.7k, the 5th, six frame rate are 7.4k, like this, second base station is after receiving the up CMR request in first base station, the corresponding change of meeting also promptly changes the CMI of second base station to the first base station down speech frame to the code rate of first base station down.
First base station begins to monitor the CMI situation of change of receiving from second base station down, and carries out corresponding judgement after the CMR that the up transmission rule in second base station changes:
First base station judges whether the current descending speech frame CMI that receives is consistent with the descending speech frame CMI that receives of previous frame from second base station, if the frame number of the current descending speech frame of receiving is an odd number, and current descending speech frame CMI that receives and the descending speech frame CMI that receives of previous frame are inconsistent, illustrate that then the frame difference that voice channel postpones to cause is an even number, if instead consistent, then the frame difference is an odd number; Perhaps, if the frame number of the current descending speech frame of receiving is an even number, and the current descending speech frame CMI that receives and the descending speech frame CMI that receives of previous frame are inconsistent, illustrate that then the frame difference that voice channel postpones to cause is an odd number, if instead consistent, then the frame difference is an even number.
302, judge whether the speed receive the even number speech frame is consistent with the last speed that receives speech frame:
If first base station is inconsistent to the speech frame rates of the even number speech frame of the up transmission in second base station and last up transmission, and the voice frame number of up transmission is odd number with corresponding descending reception from the frame difference between the voice frame number of second base station, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent; Perhaps, if first base station is inconsistent to the speech frame rates of the odd number speech frame of the up transmission in second base station and last up transmission, and the voice frame number of up transmission is even number with corresponding reception from the frame difference between the voice frame number of second base station down, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent.
If 303 is inconsistent, then the rate request in the upward sent voice frame is postponed the odd number of time of speech frame;
The rate request of last upward sent voice frame can be repeated send odd number.
304, the rate request behind the transmission lag;
305, after the completing steps 304, start timer, the time of timer is greater than the twice of frame difference, 200ms for example, if before timer arrives, find that the descending speed that receives the even number speech frame is consistent with the last descending speed that receives speech frame, then withdraws from flow process; If after timer arrives, descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent, then repeat step 303 and 304; If after twice adjustment, the descending speed that receives the even number speech frame is still consistent with the last descending speed that receives speech frame, then withdraws from flow process.
Implement sight three, referring to Fig. 4, the process that voice communication realizes in first base station and second base station:
401, the frame between the voice frame number of the voice frame number of determining up transmission and corresponding descending reception is poor:
First base station receives the speech frame of up or second base station down of mobile phone, after voice channel is set up, first base station is to the up transmission in second base station CMR, send rule for being unit with two frames, first, three, five ... frame is corresponding constantly from the up CMR frame of receiving of mobile phone constantly, be labeled as the O frame constantly, second, four, six ... frame is corresponding constantly from the up CMI frame of receiving of mobile phone constantly, be labeled as the E frame constantly, choose two speed, for example 7.4K and 6.7K replace transmission successively, promptly first, two frame rate are 7.4k, the 3rd, four frame rate are 6.7k, the 5th, six frame rate are 7.4k, like this, second base station is after receiving the up CMR request in first base station, the corresponding change of meeting also promptly changes the CMI of second base station to the first base station down speech frame to the code rate of first base station down.
First base station begins to monitor the CMI situation of change of receiving from second base station down, and carries out corresponding judgement after the CMR that the up transmission rule in second base station changes:
First base station judges whether the current descending speech frame CMI that receives is consistent with the descending speech frame CMI that receives of previous frame from second base station, if the frame number of the current descending speech frame of receiving is an odd number, and current descending speech frame CMI that receives and the descending speech frame CMI that receives of previous frame are inconsistent, illustrate that then the frame difference that voice channel postpones to cause is an even number, if instead consistent, then the frame difference is an odd number; Perhaps, if the frame number of the current descending speech frame of receiving is an even number, and the current descending speech frame CMI that receives and the descending speech frame CMI that receives of previous frame are inconsistent, illustrate that then the frame difference that voice channel postpones to cause is an odd number, if instead consistent, then the frame difference is an even number.
402, in the given time, the descending first even number speech frame rates that receives is consistent with the last descending speech frame rates that receives; Afterwards, descendingly receive the second even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Afterwards, descending the 3rd even number speech frame rates that receives is consistent with the last descending speech frame rates that receives; The odd number of time that then rate request in the upward sent voice frame is postponed speech frame.
If first base station is inconsistent to the speech frame rates of the even number speech frame of the up transmission in second base station and last up transmission, and the voice frame number of up transmission is odd number with corresponding descending reception from the frame difference between the voice frame number of second base station, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent; Perhaps, if first base station is inconsistent to the speech frame rates of the odd number speech frame of the up transmission in second base station and last up transmission, and the voice frame number of up transmission is even number with corresponding reception from the frame difference between the voice frame number of second base station down, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent.
The rate request of last upward sent voice frame can be repeated send odd number.
This scheduled time for example is 200ms greater than the twice of frame difference.
403, the rate request of transmission lag.
Adopt the sending method of the embodiment of the invention, the even number speech frame of rate variation can be converted to the odd number speech frame, guarantee normally carrying out of voice communication.
Embodiment, a kind of device of conversation, referring to Fig. 5, this device comprises:
First detecting unit 501 is used to detect the descending even number speech frame rates that receives and whether satisfies predetermined condition;
Delay cell 502 if be used for satisfying predetermined condition, then postpones the rate request in the upward sent voice frame odd number of time of speech frame;
Transmitting element 503 is used for the rate request behind the up transmission lag.
Wherein, first detecting unit can comprise:
Whether the first condition unit is used to detect the descending even number speech frame rates that receives and satisfies: descending even number speech frame rates and the last descending inconsistent condition of speech frame rates that receives of receiving;
Whether the second condition unit is used to detect the descending even number speech frame rates that receives and satisfies: in the given time, descending receive first consistent with the last descending speech frame rates that receives to N even number speech frame rates; Afterwards, descendingly receive N+1 to the M even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Afterwards, descending M+1 even number speech frame rates and the last descending consistent condition of speech frame rates that receives of receiving, wherein, N, M are natural number, and N is more than or equal to 1, and M is more than or equal to (N+1).
This communicator can also comprise:
Second detecting unit is used for the sense channel situation;
Frame difference unit is used for according to testing result, determines that upward sent voice frame number is poor with the frame between the corresponding descending reception voice frame number.
The device of this conversation can be applied in the voice communication of variable Rate, is arranged on network side, can be arranged in the base station, also can be arranged in the gateway, can also be used with base station or gateway as independent device, realize the reliability service of variable Rate voice communication.
The device of this conversation can be applied in the voice communication of variable Rate, is arranged on network side, can be arranged in the base station, also can be arranged in the gateway, can also be used with base station or gateway as independent device, realize the reliability service of variable Rate voice communication.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better execution mode under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise 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 a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of method of conversation is characterized in that, this method comprises:
Detect the descending even number speech frame rates that receives and whether satisfy predetermined condition;
When satisfying described predetermined condition, then the rate request in the upward sent voice frame is postponed the odd number of time of speech frame;
Described rate request behind the up transmission lag.
2, method according to claim 1 is characterized in that, described predetermined condition is:
Descendingly receive the even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Perhaps,
In the given time, descending receive first consistent with the last descending speech frame rates that receives to N even number speech frame rates; Afterwards, descendingly receive N+1 to the M even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Afterwards, the descending M+1 even number speech frame rates that receives is consistent with the last descending speech frame rates that receives, and wherein, described N, M are natural number, and N is greater than or equal to 1, and M is greater than or equal to (N+1).
3, method according to claim 1 and 2 is characterized in that, this method also comprises:
The sense channel situation;
According to testing result, determine that upward sent voice frame number is poor with the frame between the corresponding descending reception voice frame number.
4, method according to claim 3 is characterized in that, the described scheduled time is greater than the twice of described frame difference.
5, method according to claim 3 is characterized in that, described descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent, comprising:
If the speech frame rates of the even number speech frame of up transmission and last up transmission is inconsistent, and described frame difference is odd number, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent; Perhaps,
If the speech frame rates of the odd number speech frame of up transmission and last up transmission is inconsistent, and described frame difference is even number, judges that then descending speed that receives the even number speech frame and the last descending speed that receives speech frame are inconsistent.
6, method according to claim 1 is characterized in that, described odd number of time with the delay of the rate request in upward sent voice frame speech frame comprises:
The rate request of last upward sent voice frame is repeated to send odd number.
7, method according to claim 1 is characterized in that, described odd number of time is the frame length of a speech frame.
8, a kind of device of conversation is characterized in that, this device comprises:
First detecting unit is used to detect the descending even number speech frame rates that receives and whether satisfies predetermined condition;
Delay cell if be used for satisfying predetermined condition, then postpones the rate request in the upward sent voice frame odd number of time of speech frame;
Transmitting element is used for the described rate request behind the up transmission lag.
9, device according to claim 8 is characterized in that, described detecting unit comprises:
Whether the first condition unit is used to detect the descending even number speech frame rates that receives and satisfies: descending even number speech frame rates and the last descending inconsistent condition of speech frame rates that receives of receiving;
Whether the second condition unit is used to detect the descending even number speech frame rates that receives and satisfies: in the given time, descending receive first consistent with the last descending speech frame rates that receives to N even number speech frame rates; Afterwards, descendingly receive N+1 to the M even number speech frame rates and the last descending speech frame rates that receives is inconsistent; Afterwards, the descending M+1 even number speech frame rates that receives is consistent with the last descending speech frame rates that receives, and wherein, described N, M are natural number, and N is greater than or equal to 1, and M is greater than or equal to (N+1).
10, according to Claim 8 or 9 described devices, it is characterized in that this device also comprises:
Second detecting unit is used for the sense channel situation;
Frame difference unit is used for according to testing result, determines that upward sent voice frame number is poor with the frame between the corresponding descending reception voice frame number.
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| CN2007101635825A CN101409598B (en) | 2007-10-12 | 2007-10-12 | Talking method and apparatus |
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| CN2007101635825A CN101409598B (en) | 2007-10-12 | 2007-10-12 | Talking method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110336924A (en) * | 2014-09-30 | 2019-10-15 | 华为技术有限公司 | QoS parameter acquisition device, the system and method for network telephone service |
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| BR0006803A (en) * | 1999-12-10 | 2001-12-11 | Lucent Technologies Inc | System and method to reduce speech delay and improve speech quality using half-blocks |
| JP4839775B2 (en) * | 2005-10-24 | 2011-12-21 | 大日本印刷株式会社 | Information embedding device, method, and program for acoustic signal |
| CN1960214B (en) * | 2006-09-28 | 2010-06-16 | Ut斯达康(中国)有限公司 | Method for realizing synchronization in PHS system |
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