CN100461663C - Code/decode type confirming method - Google Patents
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- CN100461663C CN100461663C CNB2005100886827A CN200510088682A CN100461663C CN 100461663 C CN100461663 C CN 100461663C CN B2005100886827 A CNB2005100886827 A CN B2005100886827A CN 200510088682 A CN200510088682 A CN 200510088682A CN 100461663 C CN100461663 C CN 100461663C
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Abstract
The invention relates to a method for confirming the decode/code type, for confirming the service quality based on the change of chain quality; via selecting right decode/code type, wherein the invention sends sample call to check the junction chain quality of media gateway, to judge the change of chain quality of said junction, and fix relative decode/code type for the call sent on said junction, to realize high service quality; when the chain quality decreases, the service quality can be confirmed.
Description
Technical field
The present invention relates to next generation network technology, the code/decode type that relates in particular in a kind of next generation network is determined method.
Background technology
It is carrying with the IP network that next generation network (NGN, Next Generation Network) system is one, and the fixedly integrated services network of multiple business such as mobile voice, data and video is provided.Its essential characteristic is control, carrying and professional separating.
In the NGN system, traditional switch is separated into MGC (Media Gateway Controller, Media Gateway Controller) and two network elements of MG (Media Gateway, media gateway).MGC is mainly used in the function of finishing the call control layer face; And MG is mainly used in and finishes that Media Stream is handled and the carrying processing capacity, MG can be converted into dissimilar access signals and be adapted at IP (Internet Protocol, Internet protocol) RTP/RTCP that transmits on the network (Real Time Protocol/Real Time ControlProtocol, real-time protocol (RTP)/real time control protocol) stream.MGC adopts gateway control protocol to finish control to MG usually, and wherein gateway control protocol includes but not limited to H.248 agreement and MGCP (MediaGateway Control Protocol, MGCP).
In existing NGN system, be responsible for finishing encoding and decoding that an IP calls out preferably and consult by calling party's MGC usually, its process is as follows:
(configuration is meant the ability information of user at the MG of MGC configuration MGC control to calling party's MGC by configuration or audit, audit is meant that MGC passes through the state that the audit order in the gateway control protocol obtains, configuration and ability information) obtain whole code/decode types that MG supports, sequencing according to preferential employing sorts to code/decode type, MGC is wished that the code/decode type that adopts comes the foremost most, code/decode type tabulation after MGC will sort sends to callee's call treatment entity, as MGC, SIP (Session Initiation Protocol, Session initiation Protocol) gateway etc., what callee's call treatment entity was supported according to oneself deletes own unsupported code/decode type in the code/decode type tabulation, in remaining code/decode type, select one, reply to calling party's MGC.Since the code/decode type tabulation that calling party MGC sends to the callee according to priority order sort, so the callee generally can begin to select the code/decode type of own support from the highest code/decode type of tabulation medium priority.
The priority orders of code/decode type is generally the permanent order that is pre-configured on the MGC in the code/decode type tabulation that MG supported in the prior art, when calling party MG need send calling, MGC sends to callee's call treatment entity with the tabulation of the code/decode type of this permanent order, consults to determine the code/decode type of this calling with callee's call treatment entity.Because the code/decode type tabulation that calling party's MGC sends when carrying out the code/decode type negotiation is all identical at every turn, therefore for the identical calling of calling and called, each code/decode type that is adopted is all identical, can't carry out Dynamic Selection to adapt to the variation of link-quality to code/decode type when promptly the link-quality between calling and called changes.When link-quality descends, can not preferably require lower code/decode type, for the user provides acceptable speech quality to link-quality; When link-quality improved, the code/decode type that can not preferably have relatively high expectations to link-quality for the user provides good speech quality, can't effectively be ensured service quality.
Summary of the invention
The invention provides a kind of code/decode type and determine method, in order to solve the problem that can't can't be protected according to the suitable service quality that code/decode type caused of change dynamics selection of link-quality in the prior art.
The inventive method comprises:
A kind of code/decode type is determined method, comprises step:
By sending the office direction link-quality of sampling calling detection media gateway, judge the change in link quality situation of this office direction;
Change in link quality situation according to office direction is determined corresponding optimizing code and decode type for the calling that sends on this office direction.
Described office direction is the access path between media gateway and other gateways, or the common access path of all terminals under media gateway and the same IP network section.
Described change in link quality situation is judged by setting up the link index, and the office direction link-quality testing result of media gateway and predetermined link-quality threshold value are compared, and increases the link exponential quantity when being higher than described threshold value, otherwise reducing the link exponential quantity.
When described media gateway has a plurality of office direction, set up the identification information of link corresponding index and corresponding each office direction for each office direction respectively and preserve.
Set in advance the corresponding relation between described link index and its optimizing code and decode type that is suitable for.
Described sampling is called out to true and is called out and/or test call.
When the office direction of described media gateway is the network planning pre-configured office direction and/or from call out the identification office direction of adding automatically.
Comprise the code/decode type that several according to priority just sort in the described optimizing code and decode type, the code/decode type that its medium priority is the highest preferentially is used for calling out.
Beneficial effect of the present invention is as follows:
The present invention detects by sending the office direction link-quality of calling out media gateway of sampling, and according to the optimizing code and decode type of change in link quality situation for the definite correspondence of calling, thereby simple realization can call out select suitable code/decode type according to being changed to of link-quality, when link-quality improves, can provide good service quality for the user; When link-quality descends, can provide acceptable service quality for the user.Thereby can experience for the user provides better communication, improve user's satisfaction.
Description of drawings
Fig. 1 is the flow chart that code/decode type of the present invention is determined;
Fig. 2 is the office direction schematic diagram of media gateway;
Fig. 3 is for being determined the flow chart of optimizing code and decode type by MGC;
Fig. 4 is for being determined the flow chart of optimizing code and decode type by MG.
Embodiment
Code/decode type of the present invention is determined the defective of method at prior art, proposition can be to call out the processing mode of selecting corresponding optimizing code and decode type according to the situation of change of link-quality, below in conjunction with each accompanying drawing main realization principle of the present invention and embodiment thereof is explained in detail.
The inventive method is applicable to that various types of callings of sending for media gateway in the NGN system carry out code/decode type and select.
Figure 1 shows that the flow chart of definite optimizing code and decode type of the present invention, its main implementation procedure is as follows:
Step S1, generate office direction, office direction is the IP access path between MG and other gateways, or the common access path of all terminals under MG and the same IP network section; The generation of office direction can be adopted mode pre-configured when the network planning, also can adopt the mode of discerning and adding office direction from call out automatically, further, and the mode that can adopt dual mode to combine;
Figure 2 shows that the office direction schematic diagram of media gateway, all have one or more office directions on each MG, wherein office direction 1 is for to have identical IP access path gateway to MG, and office direction 2 is all the IP terminals under the IP network section that has identical IP access path to MG.
Step S2, local terminal MG call out by the sampling on the office direction and carry out the detection of office direction link-quality, the packet that the opposite end utilizes the every interval of the transmitting-receiving message monitoring function predetermined amount of time of RTCP that oneself is received is once added up, obtain QoS (Quality of Service such as loss rate, network delay, shake, service quality) parameter, and, determine the link quality parameter that is used to characterize link-quality according to qos parameter by the MG of local terminal by the MG of RTCP with the qos parameter that obtains notice local terminal.。
Step S3, set up the link corresponding index respectively for each office direction of MG, be used to characterize the change in link quality situation of this office direction, the identification information of the corresponding office direction of link index is preserved with the corresponding relation sheet form;
When sampling is called out the link corresponding mass parameter when reaching predetermined link-quality threshold value, the link exponential quantity increases with predefined incremental change, when link quality parameter during less than predetermined link-quality threshold value, the link exponential quantity reduces with predefined decrement, when the link exponential quantity is decremented to the initial value of link index, no longer continue to successively decrease.
Link index that step S4, basis set in advance and the corresponding relation between the optimizing code and decode type are determined the optimizing code and decode type for calling out, this optimizing code and decode type is generally a plurality of, and these encoding and decoding are according to priority just sorted, guarantee that the higher encoding and decoding of priority preferentially are used for calling out.
The process of above-mentioned definite optimizing code and decode type can be finished by MGC, also can be finished by MG, respectively its implementation procedure is described below.
Figure 3 shows that MGC determines the flow chart of optimizing code and decode type, its main implementation procedure is as follows:
Step S11, on MGC, generate each office direction of MG, when the generation of office direction can be adopted the network planning on MGC the mode of each office direction of pre-configured MG, also can adopt the mode of from call out, discerning and adding office direction by MGC automatically, further, the mode that can adopt dual mode to combine.For example, MGC pre-configured and MG when the network planning have the pairing office direction of gateway of annexation, in running, when the calling of a new purpose IP address has taken place the MG under MGC discovery oneself administration, just on MGC, add an office direction automatically.Owing to generally have a large amount of IP terminal equipments in the NGN network, if use the method that generates office direction automatically, then MGC should have the function of the office direction of converging.
Step S12, MGC send sampling and call out, and by gateway control protocol (as H.248 agreement, MGCP) or proprietary protocol indication MG sampling are called out and to carry out the link-quality detection;
Support under the situation of test call at the opposite equip. of office direction, MGC needs to keep the sampling of predetermined value to call out simultaneously to this office direction, MGC is preferential to use true the calling as sampling to call out, if the true call number on each office direction reaches predetermined value, then selecting the calling of predetermined value from true calling calls out as sampling, otherwise MGC sends test call to supply the quantity that sampling is called out, and makes the sampling call number equal predetermined value.
Do not support under the situation of test call that at the opposite equip. of office direction MGC uses true the calling as sampling to call out.
MGC indication MG calls out sampling and carries out the link-quality detection, the packet that the every interval of the opposite equip. of office direction predetermined amount of time receives oneself carries out one-time detection, utilize QoS (the Quality of Service such as transmitting-receiving message monitoring function statistical packages Loss Rate, network delay, shake of RTCP, service quality) parameter, and notify MG by RTCP with qos parameter, determine the link quality parameter that is used to characterize link-quality according to qos parameter by MG.For example, MG can require for different qos parameters corresponding weight to be set in advance according to the difference of different type of calls to link-quality, as corresponding weight being set for different time delay values, being that different jitter values is provided with corresponding weight, is that different packet loss is provided with corresponding weight etc., when MG receives the qos parameter that office direction returns, search the pairing weight of different qos parameters, the weight addition can be obtained being used to characterize the link quality parameter of current link-quality quality.
Step S13, MGC set up the link corresponding index respectively for each office direction of all MG of its control, are used to characterize the change in link quality situation of this office direction.
MG compares link quality parameter that draws among the step S12 and the link-quality threshold value of being scheduled to, when link quality parameter reaches predetermined link-quality threshold value, MG sends chain alarming information by gateway control protocol or proprietary protocol to MGC, MGC increases the link exponential quantity with predefined incremental change control, when link quality parameter during less than predetermined link-quality threshold value, MG sends link-recovery information by gateway control protocol or proprietary protocol to MGC, and MGC reduces the link exponential quantity with predefined decrement control.When the link exponential quantity is decremented to the initial value of link index, no longer continue to successively decrease.For example: the link index initial value of office direction is made as 0, MGC receives that whenever a link-quality alarm just adds 1 with the link exponential quantity of corresponding office direction, MGC receives that whenever a link-quality recovering information just subtracts 1 with the link exponential quantity of corresponding office direction, when the link exponential quantity is decremented to 0, no longer continue to successively decrease.
The identification information of corresponding each office direction of link index of each office direction of the MG under MGC control, this corresponding relation is stored in the database of MGC.For example, MGC is two MG of control down, and numbering is respectively 1 and 2, wherein are numbered 1 MG and have three office directions, are numbered 2 MG and have two office directions, and the corresponding relation of the office direction identification information of preserving in MGC and the link index of office direction is:
Step S14, MGC determine the optimizing code and decode type according to link index that sets in advance and the corresponding relation between the optimizing code and decode type for calling out, and the link index of the office direction of MG and the corresponding relation of optimizing code and decode type are recorded in the database of MGC in advance;
The link exponential quantity is used to characterize the change in link quality situation of office direction, should determine different optimizing code and decode types according to the difference of link exponential quantity, the optimizing code and decode type that this sets in advance is generally a plurality of, comes the top the highest code/decode type of priority that is.For example, can set several link index range values, the corresponding one group of optimizing code and decode type of each link index range value.When the link exponential quantity is low, the optimizing code and decode type be voice quality better but the more type of bandwidth occupancy, as G.722.1 encoding and decoding, G.711 encoding and decoding, even types such as MP3, WMA encoding and decoding; When the link exponential quantity was higher, the optimizing code and decode type was that voice quality is slightly poor but code/decode type that bandwidth occupancy is less, as G.729 encoding and decoding, G.723.1 encoding and decoding, G.729 encoding and decoding, type such as encoding and decoding G.726, perhaps this office direction was limit and was exhaled.
Following table is depicted as link index that MGC is provided with for the MG with two office directions in advance and the corresponding relation between the optimizing code and decode type:
MGC determines preferred code/decode type according to current link exponential quantity for calling out, and the optimizing code and decode type of determining passed through interoffice signaling, as BICC (Bearer Independent Call Control Protocol, call control protocol with bearer independent) or SIP (Session Initiation Protocol, Session initiation Protocol) send to the opposite end of office direction.
The call treatment entity of step S15, opposite end receives described optimizing code and decode type, with own unsupported code/decode type deletion in the optimizing code and decode type, in remaining code/decode type, select one, the call treatment entity of opposite end generally can begin to select the code/decode type oneself supported from the highest code/decode type of priority, and selected code/decode type returned to MGC, MG carries out coding-decoding operation according to the code/decode type that returns to calling by the MGC indication.
Figure 4 shows that MG determines the flow chart of optimizing code and decode type, its main implementation procedure is as follows:
Step S21, on MG, generate each office direction of MG, when the generation of office direction can be adopted the network planning on MG the mode of pre-configured its each office direction, also can adopt the mode of from call out, discerning and adding office direction by MG automatically, further, the mode that can adopt dual mode to combine.For example, during the network planning on MG the pre-configured pairing office direction of gateway that has annexation with it, in running, when the calling of a new purpose IP address has taken place MG, just automatically add an office direction.Owing to generally have a large amount of IP terminal equipments in the NGN network, if use the method that generates office direction automatically, then MG should have the function of the office direction of converging.
The true calling that step S22, MG send MGC is carried out link-quality and is detected, the packet that the every interval of the opposite equip. of office direction predetermined amount of time receives oneself carries out one-time detection, utilize QoS (the Quality of Service such as transmitting-receiving message monitoring function statistical packages Loss Rate, network delay, shake of RTCP, service quality) parameter, and notify MG by RTCP with qos parameter, determine the link quality parameter that is used to characterize link-quality according to qos parameter by MG.
For example, MG can require for different qos parameters corresponding weight to be set in advance according to the difference of different type of calls to link-quality, as corresponding weight being set for different time delay values, being that different jitter values is provided with corresponding weight, is that different packet loss is provided with corresponding weight etc., when MG receives the qos parameter that office direction returns, search the pairing weight of different qos parameters, the weight addition can be obtained being used to characterize the link quality parameter of current link-quality quality.
Step S23, MG set up the link corresponding index respectively for each office direction, are used to characterize the change in link quality situation of this office direction.
MG compares link quality parameter that draws among the step S12 and the link-quality threshold value of being scheduled to, when link quality parameter during more than or equal to predetermined link-quality threshold value, increase the link exponential quantity with predefined incremental change, when link quality parameter during, reduce the link exponential quantity with predefined decrement control less than predetermined link-quality threshold value.When the link exponential quantity is decremented to the initial value of link index, no longer continue to successively decrease.
For example: the link index initial value of office direction is made as 0, when link quality parameter during more than or equal to the link-quality threshold value, MG adds 1 with the link exponential quantity of corresponding office direction, when link quality parameter during less than predetermined link-quality threshold value, MG just subtracts 1 with the link exponential quantity of corresponding office direction, when the link exponential quantity is decremented to 0, no longer continue to successively decrease.
The identification information of corresponding each office direction of the link index of each office direction of MG, this corresponding relation is stored in the database of MG.For example, the corresponding relation with link index of the office direction identification information of MG of three office directions and office direction is:
| The office direction identification information | The link index |
| 1 | 2 |
| 2 | 0 |
| 3 | 6 |
Step S24, MG determine the optimizing code and decode type according to link index that sets in advance and the corresponding relation between the optimizing code and decode type for calling out, and the link index of the office direction of MG and the corresponding relation of optimizing code and decode type are recorded in the database of MG in advance;
The link exponential quantity is used to characterize the change in link quality situation of office direction, should determine different optimizing code and decode types according to the difference of link exponential quantity, the optimizing code and decode type that this sets in advance is generally a plurality of, comes the top the highest code/decode type of priority that is.For example, can set several link index range values, the corresponding one group of optimizing code and decode type of each link index range value.When the link exponential quantity is low, the optimizing code and decode type be voice quality better but the more type of bandwidth occupancy, as G.722.1 encoding and decoding, G.711 encoding and decoding, even types such as MP3, WMA encoding and decoding; When the link exponential quantity was higher, the optimizing code and decode type was that voice quality is slightly poor but code/decode type that bandwidth occupancy is less, as G.729 encoding and decoding, G.723.1 encoding and decoding, G.729 encoding and decoding, type such as encoding and decoding G.726, perhaps this office direction was limit and was exhaled.
Following table is depicted as the link index of the MG setting with two office directions and the corresponding relation between the optimizing code and decode type:
MG determines preferred code/decode type according to current link exponential quantity for calling out, and the optimizing code and decode type determined sent to MGC by gateway control protocol (as H.248 agreement, MGCP) or proprietary protocol, pass through interoffice signaling by MGC, as BICC (Bearer Independent Call Control Protocol, call control protocol with bearer independent) or SIP (Session Initiation Protocol, Session initiation Protocol) send to the opposite end of office direction.
The call treatment entity of step S25, opposite end receives described optimizing code and decode type, with own unsupported code/decode type deletion in the optimizing code and decode type, in remaining code/decode type, select one, the call treatment entity of opposite end generally can begin to select the code/decode type oneself supported from the highest code/decode type of priority, and selected code/decode type returned to MGC, MG carries out coding-decoding operation according to the code/decode type that returns to calling by the MGC indication.
This shows that code/decode type of the present invention determines that method has realized selecting suitable code/decode type for calling out according to the variation tendency of link-quality, when the link-quality situation is better, can provide good service quality for the user; When the link-quality situation is relatively poor, can provide acceptable service quality for the user, thereby can experience for the user provides better communication, improve user's satisfaction.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. a code/decode type is determined method, it is characterized in that, comprises step:
By sending the office direction link-quality of sampling calling detection media gateway, judge the change in link quality situation of this office direction;
Change in link quality situation according to office direction is determined corresponding optimizing code and decode type for the calling that sends on this office direction.
2. the method for claim 1 is characterized in that, described office direction is the access path between media gateway and other gateways, or the common access path of all terminals under media gateway and the same IP network section.
3. the method for claim 1, it is characterized in that, described change in link quality situation is judged by setting up the link index, the office direction link-quality testing result of media gateway is compared with the link-quality threshold value of being scheduled to, when being higher than described threshold value, increase the link exponential quantity, otherwise reduce the link exponential quantity.
4. method as claimed in claim 3 is characterized in that, when described media gateway has a plurality of office direction, sets up the identification information of link corresponding index and corresponding each office direction for each office direction respectively and preserves.
5. as claim 3 or 4 described methods, it is characterized in that, set in advance the corresponding relation between described link index and its optimizing code and decode type that is suitable for.
6. the method for claim 1 is characterized in that, described sampling is called out to true and called out and/or test call.
7. the method for claim 1 is characterized in that, when the office direction of described media gateway is the network planning pre-configured office direction and/or from call out the identification office direction of adding automatically.
8. the method for claim 1 is characterized in that, comprises the code/decode type that several according to priority just sort in the described optimizing code and decode type, and the code/decode type that its medium priority is the highest preferentially is used for calling out.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0903883A2 (en) * | 1997-09-21 | 1999-03-24 | Lucent Technologies Inc. | System and method for adaptive modification of modulated and coded schemes in a communication system |
| CN1277764A (en) * | 1997-08-29 | 2000-12-20 | 艾利森电话股份有限公司 | A method for selecting a combination of modulation and channel coding schemes in a digital communication system |
| CN1360805A (en) * | 1999-07-05 | 2002-07-24 | 诺基亚公司 | Method for coding mode selection |
| WO2003019847A1 (en) * | 2001-08-27 | 2003-03-06 | Nokia Corporation | A method and a system for transfering amr signaling frames on halfrate channels |
| CN1520643A (en) * | 2001-06-25 | 2004-08-11 | 诺基亚有限公司 | Optimization of MCS and multicode with TFCI signaling |
| CN1592438A (en) * | 2003-09-04 | 2005-03-09 | 华为技术有限公司 | Adaptive multi-rate encoding method and device in mobile communication system |
-
2005
- 2005-08-01 CN CNB2005100886827A patent/CN100461663C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277764A (en) * | 1997-08-29 | 2000-12-20 | 艾利森电话股份有限公司 | A method for selecting a combination of modulation and channel coding schemes in a digital communication system |
| EP0903883A2 (en) * | 1997-09-21 | 1999-03-24 | Lucent Technologies Inc. | System and method for adaptive modification of modulated and coded schemes in a communication system |
| CN1360805A (en) * | 1999-07-05 | 2002-07-24 | 诺基亚公司 | Method for coding mode selection |
| CN1520643A (en) * | 2001-06-25 | 2004-08-11 | 诺基亚有限公司 | Optimization of MCS and multicode with TFCI signaling |
| WO2003019847A1 (en) * | 2001-08-27 | 2003-03-06 | Nokia Corporation | A method and a system for transfering amr signaling frames on halfrate channels |
| CN1592438A (en) * | 2003-09-04 | 2005-03-09 | 华为技术有限公司 | Adaptive multi-rate encoding method and device in mobile communication system |
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