CN1929478B - Method and system for reducing transmission band occupation - Google Patents
Method and system for reducing transmission band occupation Download PDFInfo
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- CN1929478B CN1929478B CN200510098699A CN200510098699A CN1929478B CN 1929478 B CN1929478 B CN 1929478B CN 200510098699 A CN200510098699 A CN 200510098699A CN 200510098699 A CN200510098699 A CN 200510098699A CN 1929478 B CN1929478 B CN 1929478B
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Abstract
This invention discloses one method and system to reduce transmission band width, wherein the system comprises sort property generation module, sort property mapping module and transmission control module; the invention method comprises the following steps: setting data sort strategy, data property and relative transmission strategy; generating each type of transmission agreement package accordingto sort strategy; determining each sort of transmission agreement property values according to each data property; transmitting and adjusting each kind of transmission package relative to different transmission strategy and transmission package property values.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to a kind of method that reduces transmission band occupation.
Background technology
At present, owing to be subjected to the influence of a variety of causes such as the restriction of limited bandwidth resources of wireless network and transmittability and interference, multipath fading, the situation that transmission bandwidth can't satisfy transmission requirement often appears in eating dishes without rice or wine between terminal and the network, such as because transmission quality worsens, available bandwidth resources is reduced and the transmission bandwidth that causes can't satisfy transmission requirement etc.In such cases, then must reduce the shared transmission bandwidth of downlink service data stream in professional the connection, to adapt to the variation of the environment of eating dishes without rice or wine, avoid network side to occur congested and service delay that cause increases or even service disconnection.
Prior art reduces the method that downstream transmission bandwidth is taken and is generally: the transmission Control Node (such as RNC or BSC etc.) in the Access Network is at some users, business datum such as the low user of priority, a part of data are wherein abandoned, and only transmit another part data.Such as, when the transmission Control Node receives 5 transmission protocol package of this user, preceding 2 transmission protocol package are abandoned, and only back 3 transmission protocol package are sent to this user by eating dishes without rice or wine, thereby reduce taking the downstream transmission bandwidth of eating dishes without rice or wine.
But prior art is in adopting the above-mentioned process that abandons at user's partial data, and the transmission Control Node is not considered the importance of institute's packet discard, but has carried out the process that blindly abandons.Therefore, caused probably abandoning and to be related to the user and can accurately to obtain the critical packet of data content, thereby caused the user can't accurately receive data, influenced user's business impression greatly.
In addition, at present,,, also there is a kind of variable rate voice coding and decoding scheme (as AMR) for speech data for reducing to the taking of downstream transmission bandwidth.In this scheme, system can notify codec by signaling, reduces taking downstream transmission bandwidth by codec by changing coding and decoding scheme reduction message transmission rate.But, in this scheme, must at first carry out a series of signaling transmission course, could reduce downstream transmission bandwidth by the change coding and decoding scheme then and take.Therefore make that reducing the measure that takies downstream transmission bandwidth exists bigger time delay, and increased the signaling consumption of network side, wasted Internet resources.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that reduces transmission band occupation, farthest to guarantee the transmission and the reception of critical packet in the required transmission data, guarantees user's business impression to greatest extent.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that reduces transmission band occupation, this method comprises:
A, the classification policy that data are classified is set, and the property value of Various types of data and the transmission policy of each property value correspondence are set;
B, the data of required transmission are classified and generate all kinds of transmission protocol package, and determine the property value of the transmission protocol package that generated according to the property value of the data of generation transmission protocol package according to described classification policy;
C, according to the transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence, when all kinds of transmission protocol package of transmission, adjust;
In steps A, described transmission policy comprises first transmission policy and second transmission policy, wherein, the first transmission policy correspondence makes the differing transmission protocols bag with different attribute value take first processing mode of different transmission bandwidths when transmission bandwidth can satisfy transmission requirement, the second transmission policy correspondence make the same host-host protocol with same property value wrap in transmission bandwidth can't satisfy transmission requirement the time first processing mode than its correspondence take still less second processing mode of transmission bandwidth;
Between step B and step C, further comprise: judge whether current transmission bandwidth can't satisfy transmission requirement, if, then in step C, according to second processing mode in second transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence all kinds of transmission protocol package are transmitted adjustment, otherwise, in step C, all kinds of transmission protocol package are carried out described adjustment according to first processing mode in first transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence.
In steps A, the described step that the classification policy that data are classified is set comprises: according to the QoS attribute, different data streams is divided into inhomogeneous data;
Described property value is the stream attribute value.
In steps A, the described step that the classification policy that data are classified is set comprises: according to influence from high to low the degree of data in each class data flow to the business impression, the each several part data in each class data flow are divided into inhomogeneous data respectively;
Described property value is the bag property value.
In steps A, the described step that the classification policy that data are classified is set comprises: according to the QoS attribute, different data streams is divided into inhomogeneous data flow, and, the each several part data in each class data flow are divided into inhomogeneous data respectively according to the influence degree from high to low of data in each class data flow to the business impression;
Described property value is stream attribute value and bag property value.
In steps A, the described step that the transmission policy of each property value correspondence is set comprises: the corresponding different transmission policys of various flows property value are set, and the corresponding different transmission policys of different bag property values are set;
Described step C comprises: at first adjust when all kinds of transmission protocol package of transmission according to the different transmission policys of the stream attribute value of all kinds of transmission protocol package and set various flows property value correspondence, adjust when all kinds of transmission protocol package of transmission according to the different transmission policys of the bag property value of all kinds of transmission protocol package and set difference bag property value correspondence then.
Described stream attribute value is self-defining value, or the address and the port number information that connect.
Describedly judge that whether current transmission bandwidth can't satisfy transmission requirement is according to the current signal intensity value, and/or the current error rate, and/or preserve the number of the formation of data in the current transmission Control Node, and/or current noise is recently carried out.
Described transmission policy comprises: different transmission process modes, and/or different modulation systems, and/or different channel coding methods, and/or different encipherment protection degree.
When transmission policy is different transmission process mode, described different transmission process mode comprises: use the different priorities queue processing, and/or whether carry out packet loss and handle, and/or whether adopt affirmation mechanism, and/or whether select different paths, and/or use different transmission technologys;
When transmission policy was the different channels coded system, described different channels coded system was: convolution code, and/or Turbo code, and/or the time idle bit;
When transmission policy was different modulation system, described different modulating mode was: FSK or PSK;
Whether when transmission policy was different encipherment protection degree, described different encipherment protection degree was: select to encrypt, and/or select different cryptographic algorithm.
When described transmission policy comprises different priorities queue processing in the different transmission process modes, and/or whether carry out that packet loss is handled and/or when whether adopting affirmation mechanism, in step C, the described step of adjusting during all kinds of transmission protocol package in transmission comprises: with the corresponding transmission policy of property value is that transmission protocol package that higher priority queues is handled is distributed in the higher formation of priority and sends, and the corresponding transmission policy of the property value transmission protocol package that is the lower priority queue processing is distributed in the lower formation of priority send; And/or, with the corresponding transmission policy of property value for the transmission protocol package that directly sends and/or adopt affirmation mechanism directly and/or adopt affirmation mechanism to send, be that the transmission protocol package that abandons directly abandons with the corresponding transmission policy of property value.
In step B, carry out described classification, generate the step that all kinds of transmission protocol package reach definite property value by the categorical attribute generation module;
Described step B further comprises:
B11, categorical attribute generation module write the property value of all kinds of transmission protocol package in the application layer of all kinds of transmission protocol package, then all kinds of transmission protocol package are sent to the categorical attribute mapping block;
After B12, categorical attribute mapping block receive all kinds of transmission protocol package, be mapped to respectively in the transmission protocol layer of all kinds of transmission protocol package after according to the mapping policy that sets in advance the property value in all kinds of transmission protocol package application layers being adjusted, then all kinds of transmission protocol package be sent to transmission control module;
Before carrying out described adjustment, described step C further comprises: transmission control module obtains the property value of all kinds of transmission protocol package from the transmission protocol layer of all kinds of transmission protocol package that receive;
In step C, carry out the step that described transmission is adjusted according to the property value of all kinds of transmission protocol package of being obtained by transmission control module.
In step B, carry out described classification, generate the step that all kinds of transmission protocol package reach definite property value by the categorical attribute generation module;
Described step B further comprises:
B21, categorical attribute generation module write the property value of all kinds of transmission protocol package respectively in the application layer of all kinds of transmission protocol package, then all kinds of transmission protocol package are sent to the categorical attribute mapping block;
All kinds of transmission protocol package that B22, categorical attribute mapping block will receive are forwarded to transmission control module;
Before carrying out described transmission adjustment, described step C further comprises: transmission control module is mapped to the property value in all kinds of transmission protocol package application layers in the transmission protocol layer of self according to the mapping policy that sets in advance, and from transmission protocol layer, obtain the property value of all kinds of transmission protocol package, perhaps, transmission control module directly obtains the property value in all kinds of transmission protocol package application layers;
In step C, carry out the step of described adjustment according to the property value of all kinds of transmission protocol package of being obtained by transmission control module.
Described categorical attribute generation module is the network entity that network side has codec functions; Described categorical attribute mapping block is the borde gateway of network side; Described transmission control module is the network entity that network side is controlled transmission.
Described categorical attribute generation module, categorical attribute mapping block and transmission control module are in terminal.
Described mapping steps comprises: the property value in all kinds of transmission protocol package application layers is write direct in the transmission protocol layer, or, write in the transmission protocol layer after property value in all kinds of transmission protocol package application layers being revised as the property value of higher or low classification, or, the property value in all kinds of transmission protocol package application layers is mapped as self-defining property value.
As seen, the method for the present invention's proposition has the following advantages:
1, in the present invention, importance according to data content, promptly whether can be related to the information that the user obtains data content, business datum is divided in order to have all kinds of transmission protocol package of different attribute value, therefore, when transmission bandwidth can't satisfy transmission requirement, can carry out different transmission process to the transmission protocol package in the same connection according to the property value of transmission protocol package, such as, transmission protocol package for the higher property value of priority directly sends, directly abandon for the transmission protocol package of the low property value of priority etc., thereby guaranteeing that but QoS is had relatively high expectations and is related to the critical packet that can the user obtain data content information is sent to the user, make the user can accurately obtain the content of data, improved user's business to greatest extent and experienced, increased the satisfaction of user operator.
2, in the present invention, because when finding that transmission bandwidth can't satisfy transmission requirement, just can transmit adjustment immediately to all kinds of transmission protocol package, and need not to carry out signaling transmission course and any wait process, therefore, can in time reduce the taking of transmission bandwidth, timely relieve transmission pressure, it is congested to avoid network side to take place.
3, in the present invention, when transmission bandwidth can't satisfy transmission requirement, network side need not to use any signaling just can in time adjust the transmission policy of all kinds of transmission protocol package, minimizing takies transmission bandwidth, therefore, save the signaling consumption of network side, saved Internet resources.
4, in the present invention, when transmission quality recovers normal, when promptly transmission bandwidth can satisfy transmission requirement, network is the transmission of restore data automatically, need not to carry out manual intervention, the processing of level and smooth restore data.
Description of drawings
Fig. 1 is the schematic diagram of system of the present invention.
Fig. 2 is implemented in the flow chart that reduces on the downlink transmission direction the embodiment of the invention of transmission band occupation.
Fig. 3 is the schematic diagram that packages respectively according to Various types of data in the data flow in embodiments of the present invention.
The schematic diagram of the transmission protocol package that Fig. 4 is in embodiments of the present invention to be generated.
Fig. 5 is a schematic diagram of being carried out mapping in embodiments of the present invention by GGSN.
Fig. 6 keeps the former stream attribute value of transmission protocol package and the schematic diagram of bag property value in embodiments of the present invention in mapping process.
Fig. 7 transmits the schematic diagram that Control Node is classified and handled in embodiments of the present invention.
Embodiment
Fig. 1 is the schematic diagram of system of the present invention.Referring to Fig. 1, system of the present invention comprises categorical attribute generation module A1, categorical attribute mapping block A2 and transmission control module A3, and wherein, categorical attribute mapping block A2 links to each other with transmission control module A3 with categorical attribute generation module A1 respectively.Categorical attribute generation module A1, be used for the data of the required transmission back of classifying being generated all kinds of transmission protocol package according to classification policy, and in the application layer of all kinds of transmission protocol package that generated, carry property value according to the property value of Various types of data after the classification that sets in advance, then all kinds of transmission protocol package are sent to categorical attribute mapping block A2; Categorical attribute mapping block A2 is mapped to the property value in the application layer of all kinds of transmission protocol package in the transmission protocol layer, then all kinds of transmission protocol package is sent to transmission control module A3; Transmission control module A3 transmits adjustment according to the different transmission policys of property value in the transmission protocol layer of all kinds of transmission protocol package and the different attribute value correspondence that sets in advance to all kinds of transmission protocol package.
Referring to Fig. 1, when the present invention realizes reducing to the taking of transmission bandwidth on the uplink direction, each module in the system of the present invention shown in Fig. 1, promptly categorical attribute generation module A1, categorical attribute mapping block A2 and transmission control module A3 are integrated in the terminal of transmitter side.
When the present invention realizes reducing to the taking of transmission bandwidth on downlink transmission direction, categorical attribute generation module A1 is independently in the system of the present invention, network side has the network entity of codec functions, such as application server (AS) and codec etc., categorical attribute mapping block A2 and transmission control module A3 can be independently network entities of difference, be that categorical attribute mapping block A2 is the borde gateway of network side, transmission control module A3 is the transmission Control Node that network side can be controlled transmission, such as router and base station etc., categorical attribute mapping block A2 and transmission control module A3 also can be integrated in the network entity, are integrated in the base station of network side such as categorical attribute mapping block A2 and transmission control module A3.
The core concept of the inventive method is: the strategy that data are classified is set, and the property value of classification back Various types of data and the transmission policy of each property value correspondence are set; Generate all kinds of transmission protocol package respectively after according to described classification policy the data of required transmission being classified, and determine the property value of the transmission protocol package that generated according to the property value of the data that generate transmission protocol package; Transmission policy according to the property value of all kinds of transmission protocol package and set each property value correspondence transmits adjustment to all kinds of transmission protocol package.
Wherein, classifying, setting property and transmitting when adjusting according to property value, can there be three kinds of modes in the present invention: one, classify at different data streams, it is divided into inhomogeneous data flow, and the data flow that variant class is set is distinguished corresponding various flows property value, transmitting when adjusting, carrying out different transmission process according to the various flows property value of each transmission protocol package; Two, classify at the data in the same data flow, it is divided into inhomogeneous data, and the respectively corresponding different bag property value of data of variant class is set, and transmitting when adjusting, carry out different transmission process according to the difference bag property value of each transmission protocol package; Three, classify at different data streams, it is divided into inhomogeneous data flow, and the data flow that variant class is set is distinguished corresponding different stream attribute values, and classify at the data in the same data flow, it is divided into inhomogeneous data, and the data that variant class is set are distinguished corresponding different bag property values, when transmitting adjustment, at first carry out different transmission process according to the stream attribute value of each transmission protocol package, the bag property value according to each transmission protocol package carries out different transmission process then.
In addition, the present invention can be just to carry out when transmission bandwidth can't satisfy transmission requirement according to the process that set transmission policy transmits adjustment to all kinds of transmission protocol package, that is to say, when transmission bandwidth can't satisfy transmission requirement, just adopt the inventive method, guarantee the transmission of critical packet in the data.
The present invention also can under any circumstance all carry out according to the process that set transmission policy transmits adjustment to all kinds of transmission protocol package, that is to say, no matter whether transmission bandwidth satisfies transmission requirement, all can adopt the inventive method to guarantee the transmission of critical packet in the data, but it should be noted that, in such cases, the present invention is directed to same property value two kinds of transmission policy first transmission policys and second transmission policy can be set, wherein, the first transmission policy correspondence makes the differing transmission protocols bag with different attribute value take first processing mode of different transmission bandwidths when transmission bandwidth can satisfy transmission requirement, the second transmission policy correspondence make the same host-host protocol with same property value wrap in transmission bandwidth can't satisfy transmission requirement the time first processing mode than its correspondence take still less second processing mode of transmission bandwidth. like this, the present invention is before transmitting adjustment to each transmission protocol package, judge at first whether current transmission bandwidth can't satisfy transmission requirement, if, then all kinds of transmission protocol package are transmitted adjustment according to second processing mode in second transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence, otherwise, according to first processing mode in first transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence all kinds of transmission protocol package are transmitted adjustment. such as, set in advance the less error correcting code of use of wrapping in corresponding first transmission policy of transmission protocol package that property value is A, and the minimum error correcting code of use in corresponding second transmission policy, then in the present invention, before each transmission protocol package of transmission, judge at first whether current transmission bandwidth can satisfy transmission requirement, if can satisfy, be that the transmission that the transmission protocol package of A is carried out is adjusted into then for property value, use less error correcting code to transmit the transmission protocol package of this property value as A, when transmission environment worsens, transmission bandwidth makes when can't satisfy transmission requirement, be that the transmission that the transmission protocol package of A is carried out is adjusted into then for property value, use minimum error correcting code to transmit the transmission protocol package of this property value as A. for another example, set in advance the use lower priority formation of wrapping in corresponding first transmission policy of transmission protocol package that property value is B, and directly abandoning in corresponding second transmission policy, then in the present invention, before each transmission protocol package of transmission, judge at first whether current transmission bandwidth can satisfy transmission requirement, if can satisfy, be that the transmission that the transmission protocol package of B is carried out is adjusted into then for property value, use the formation of lower priority to transmit the transmission protocol package of this property value as B, when transmission environment worsens, transmission bandwidth makes when can't satisfy transmission requirement, be that the transmission that the transmission protocol package of B is carried out is adjusted into then for property value, directly abandon the transmission protocol package that this property value is B. this shows, the present invention can make when transmission environment worsens, take transmission bandwidth still less during than the transmission environment normal condition for the transmission protocol package of same property value, realized quality according to transmission environment, just whether transmission bandwidth satisfies transmission requirement, thereby dynamically adjust the different transmission policys that adopt and take different transmission bandwidths, thereby make the present invention have the great flexibility and the wider scope of application.
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Below be example at downlink transmission direction and the process of when transmission bandwidth can't satisfy transmission requirement, just all kinds of transmission protocol package being transmitted adjustment according to set transmission policy, come that the present invention is described in detail.
In following embodiment, the categorical attribute generation module A1 in the system of the present invention is the codec of network side, and categorical attribute mapping block A2 is a borde gateway, and transmission control module A3 is the transmission Control Node of network side.
In following embodiment, classify, set property and implementation procedure of the present invention is described according to the third mode that property value transmits adjustment with above-mentioned.
Fig. 2 is implemented in the flow chart that reduces on the downlink transmission direction the embodiment of the invention of transmission band occupation.Referring to Fig. 2, the present invention reduces the process that downstream transmission bandwidth is taken and specifically may further comprise the steps:
Step 201: set in advance the strategy that data are classified, and the property value of classification back Various types of data and the different transmission policys of different attribute value correspondence are set.
Here, the strategy that data are classified being set comprises: strategy that different data streams is classified and the strategy that the data in the same data flow are classified.
The strategy that different data streams is classified is set is: according to QoS (Qos) attribute, different data streams is divided into inhomogeneous data flow, such as, for audio data stream and text data stream, audio data stream Qos requires to be higher than text data stream, therefore, then audio data stream is divided into a class data flow, text data stream is divided into a class data flow.
The strategy that the data of same data flow are classified is set is: for same data flow, according to influence from high to low the degree of the data in each class data flow to the business impression, the data in each class data flow are divided into inhomogeneous data.As the core of data flow, less important part and marginal portion being set to class data respectively.Such as, for voice, can adopt the AMR technology according to each parameter in the encryption algorithm of voice to recovering voice influence degree from high to low, it is core category-A, less important part category-B and marginal portion C class data that voice are divided into 3 classes.
In this step, when the property value of classification back Various types of data is set, the stream attribute value of data is set according to the data flow classification under the data at first, then according to the bag property value of the concrete classification setting data of data in data flow.Set stream attribute value can be the self-defining value of characterization data traffic classification or the address and the port number information of connection.
In this step; can according to the practical business demand of network the pairing different transmission policys of different attribute value be set by operator; specifically comprise the transmission policy that the various flows property value is corresponding different; and the corresponding different transmission policy of different bag property values; to guarantee priority higher data flow data; be that important content in the premium-class traffic can be by being sent to UE; and the lower data flow of priority; be that unessential content does not take or take less downstream transmission bandwidth in the inessential data flow. different transmission policys described herein can comprise: different transmission process modes; and/or different modulation system; and/or different channel coding method; and/or different encipherment protection degree
When different transmission policys are different transmission process mode, described different transmission process mode comprises: use the different priorities queue processing, and/or whether carry out packet loss and handle, and/or whether adopt affirmation mechanism (comprise affirmation, non-affirmation and mixed confirm), and/or whether select different path (comprising different channels), and/or use different transmission technology (comprising IP, ATM etc.), described different transmission technology comprises: TDM, ATM, IP and different Radio Transmission Technologys comprise FDMA, TDMA, CDMA, OFDM etc.;
When different transmission policys were the different channels coded system, described different channels coded system was: convolution code, and/or Turbo code, and/or the time idle bit;
When different transmission policys were different modulation system, described different modulating mode was: FSK (comprising MSK, GMSK etc.), PSK (comprising BPSK, QPSK, 8PSK, 16PSK etc.), QAM (comprising 16QAM, 32QAM, 64QAM etc.);
Whether when different transmission policys were different encipherment protection degree, described different secret mode was: select to encrypt, and/or select different cryptographic algorithm.
Step 202: when carrying out data flow transmission, at first according to the strategy that sets in advance, data stream is classified, the current data flow transmitted that needs is classified, and sorted data are encoded respectively and generate transmission protocol package by codec.
Here, described transmission protocol package can be exemplified as the IP bag.
In this step, codec is at first classified respectively at the data in each data flow according to the strategy that sets in advance, same data flow is classified.Group bag after codec is encoded respectively to each the class data in the same data flow of being divided then, that is to say, codec produces the class data in about each transmission protocol package difference corresponding data stream, promptly according to the importance of data stream contents, data flow is divided into polytype transmission protocol package, rather than does not of the prior artly distinguish the transmission protocol package that each several part content importance in the data flow is only formed same format.In addition, Fig. 3 is the schematic diagram that packages respectively according to Various types of data in the data flow in embodiments of the present invention.Referring to Fig. 3, such as, the data flow that codec produces is voice, then according to the classification policy that sets in advance, codec is divided into 3 class data, category-A data, category-B data and C class data according to the importance of voice content with the voice that produce.Then, codec is encoded A, B and C class data respectively and is organized bag, forms category-A transmission protocol package, category-B transmission protocol package and C class transmission protocol package.
Step 203: codec writes this transmission protocol package in the application layer of the transmission protocol package that generates classified information is its property value, then this transmission protocol package is sent to the borde gateway of network side.
Here, described transmission protocol package can be the transmission protocol package of IP bag or other protocol format.When wrapping for IP, codec can write the property value of this IP bag in type of service (TOS) territory of IP bag.
Here, also it should be noted that, if have only a kind of categorical data stream in the connection, then the codec described in the above-mentioned steps 202 carries out the process of sorted group bag, be at this process with a kind of data flow, if in the connection polytype data flow is arranged, such as video data stream and audio data stream, then to carry out the process of sorted group bag be the process of not carrying out at this several data flow point to the codec described in the above-mentioned steps 202, such as, carry out the sorted group bag at video data stream, and carry out the sorted group bag at video data stream.
Referring to Fig. 4, when writing property value in this step, be that corresponding stream attribute value and bag property value are all write in the transmission protocol package that is generated. such as, for audio data stream, writing its stream attribute value in the category-A transmission protocol package that is generated is voice, and writing its bag property value is category-A.
Step 204: when borde gateway receives the transmission protocol package that codec sends, the property value in this transmission protocol package application layer is mapped in the transmission protocol layer of transmission protocol package.
Here, described mapping process can be exemplified as: borde gateway GGSN is mapped to stream attribute value and bag property value among the GTP/IP of increase, or borde gateway PDSN is medium with the GRE/IP that stream attribute value and bag property value are mapped to increase.
In addition, borde gateway is mapped to stream attribute value in the transmission protocol package application layer and bag property value in the transmission protocol layer, is can discern the data stream property of this transmission protocol package and this host-host protocol according to the stream attribute value in the transmission protocol package transmission protocol layer and bag property value for transmission Control Node in subsequent process to wrap in classification in the data flow.
And when shining upon, borde gateway is to shine upon according to the mapping policy that sets in advance.Be directly mapping such as, the mapping policy that sets in advance, then borde gateway does not change stream attribute value in the application layer and bag property value, in the transmission protocol layer that writes direct in the respective field.For another example, the mapping policy that sets in advance is the cancellation middle classification, reduce the priority type of handling, then borde gateway is when mapping, stream attribute value to each transmission protocol package is directly shone upon, and to the bag property value be the transmission protocol package of middle classification when shining upon, write in the transmission protocol layer after the bag property value information of middle classification in its application layer being revised as the bag property value information of higher or low classification according to this mapping policy that sets in advance.Such as, borde gateway receives the category-A transmission protocol package with same stream attribute value, category-B transmission protocol package and C class transmission protocol package, when shining upon, the stream attribute value is directly shone upon, promptly write direct, and for the bag property value is category-A and C class transmission protocol package, also directly the bag property value in the application layer is write in the transmission protocol layer, and be the category-B transmission protocol package of middle classification for the bag property value, write in the transmission protocol layer after then the bag property value category-B in the application layer being revised as the bag property value C class of low classification.
In addition, referring to Fig. 5, need to prove, in this step, when carrying out described mapping process according to mapping policy, the former bag property value and the stream attribute value that can also in transmission protocol package, keep this transmission protocol package, and according to mapping policy in transmission protocol package, increase the mapping after bag property value and stream attribute value so that recover original bag property value and stream attribute value.
Fig. 6 is a schematic diagram of being carried out mapping in embodiments of the present invention by GGSN.Referring to Fig. 6, such as, borde gateway is GGSN, and the transmission protocol package that GGSN receives is an IP bag, and then GGSN is mapped to the property value in the TOS territory among the application layer IP1 in this IP bag and codec information in the TOS territory among the transmission protocol layer IP2.
Step 205: the transmission protocol package after borde gateway will shine upon is sent to the transmission Control Node.
Step 206: after the transmission Control Node receives transmission protocol package, judge whether current transmission bandwidth can't satisfy transmission requirement, if, then execution in step 207, otherwise, carry out existing process with the normal transmission of received transmission protocol package, finish current flow process.
Here, when judging whether current transmission bandwidth can't satisfy transmission requirement, the transmission Control Node can be according to the current signal intensity value, and/or the current error rate, and/or preserve the number of the formation of data in the current transmission Control Node, and/or current noise judges recently whether current transmission bandwidth can't satisfy transmission requirement.
Such as, the transmission Control Node is obtained the current signal intensity value according to the measurement report of terminal to report, judge that then whether the signal strength values that is obtained is less than the signal strength threshold that sets in advance, if think that then current transmission bandwidth can't satisfy transmission requirement;
For another example, the transmission Control Node is obtained the current error rate according to the measurement report of terminal to report, judges that then whether the error rate of being obtained is greater than the error rate threshold value that sets in advance, if think that then current transmission bandwidth can't satisfy transmission requirement;
And for example, the transmission Control Node is obtained the current signal intensity value and the error rate, can judge at first that whether the signal strength values that is obtained is less than the signal strength threshold that sets in advance, if, judge that more whether the error rate of being obtained is greater than the error rate threshold value that sets in advance, if, think that then current transmission quality worsens, can judge at first that also whether the error rate of being obtained is greater than the error rate threshold value that sets in advance, if, judge that more whether the signal strength values that is obtained is less than the signal strength threshold that sets in advance, if think that then current transmission bandwidth can't satisfy transmission requirement.
Step 207: the transmission Control Node is obtained property value in each received transmission protocol package transmission protocol layer, comes each transmission protocol package is carried out transmission process according to the different transmission policys of the different attribute value correspondence that sets in advance.
Here, the property value of each transmission protocol package of obtaining of transmission Control Node comprises the stream attribute value and the bag property value of each transmission protocol package.Referring to Fig. 7, in this step, at first use flow classifier and each transmission protocol package of same stream attribute value is assigned in the stream handle according to the stream attribute value of each transmission protocol package, in stream handle, use is wrapped grader and according to the bag property value of each transmission protocol package each transmission protocol package of same bag property value is assigned in the packet handler then.The transmission Control Node can be at first comes the differing transmission protocols bag of corresponding various flows property value is carried out transmission process according to the different transmission policys of the various flows property value correspondence that sets in advance, if transmission bandwidth still can't satisfy transmission requirement, then can be further to same stream attribute value but each different transmission protocol package of bag property value is carried out transmission process.
Such as, the process of each transmission protocol package carrying out transmission process according to the transmission policy of different attribute value correspondence described in this step can be: such as, it is 4 transmission protocol package of 1 that the transmission Control Node receives the stream attribute value, the stream attribute value is 4 transmission protocol package of 2, in the different transmission policys of the various flows property value correspondence that sets in advance, the transmission policy of stream attribute value 1 correspondence is handled directly transmission for not carrying out packet loss, and the transmission policy of stream attribute value 2 correspondences is handled for carrying out packet loss, then transmit Control Node and directly be 4 transmission protocol package of 1 and send to the next stage receiving terminal, and be that 4 transmission protocol package of 2 directly abandon the stream attribute value with the stream attribute value.If transmission bandwidth still can't satisfy transmission requirement, and in the different transmission policys of the difference bag property value correspondence that sets in advance, the bag property value is that the transmission policy of category-A correspondence is handled directly transmission for not carrying out packet loss, the bag property value is that the transmission policy of category-B correspondence abandons for the ratio according to half, the bag property value is that the transmission policy of C class correspondence is for all abandoning, and the stream attribute value is in 4 transmission protocol package of 1 in this step, 2 transmission protocol package are the category-A bag, 2 transmission protocol package are the category-B bag, and 1 transmission protocol package is a C class bag.So, the transmission Control Node with the stream attribute value be 2 category-A bags of 1 directly by transferring to terminal, and the transmission Control Node is that in 2 category-B bags of 1 one is by transferring to terminal with the stream attribute value, and it is 1 C class bag that the transmission Control Node directly abandons the stream attribute value.For its effect is described, can suppose the current AMR speech coding scheme of using speed as 12.2K, then total bit number is 244, wherein, the stream attribute value is that 1 category-A bag accounts for 81, the stream attribute value is that 1 category-B bag accounts for 103, the stream attribute value is that 1 C class bag accounts for 60, transmitting Control Node so, to abandon the stream attribute value be behind 1 the C class bag, then reduced by 1/4 transmission rate, reduced bandwidth occupancy, the stream attribute value that the transmission Control Node abandons half is behind 1 the category-B bag, then reduce about 1/2 transmission rate, further reduced bandwidth occupancy.
If the transmission policy that sets in advance is different modulation system, at different speed,, can adopt different adjustment modes if user's transmission bandwidth speed changes such as BPSK, 8PSK.
When if the transmission policy that sets in advance is the different channels coded system, such as convolution code, Turbo code etc., convolution code all has different speed with Turbo code, such as different speed being arranged for Turbo code, as 1/2,2/3,3/4 etc., promptly contain 1/2 respectively, 1/3,1/4 redundant information is used for error correction, and (redundant information is many more can to guarantee correct recovery prime information more, redundant information is few more can to guarantee data rate more), when the transmission quality variation takes place the time, can use different channel coding rate to carry out adaptive, if when adopting 1/2 mode, if total bandwidth is constant, needs to increase the transmission data delay or some data are carried out the packet loss processing.
So far, then finished when transmission bandwidth can't satisfy transmission requirement, reduced process, and can guarantee user's business use, and when transmission quality recovers good, can recover normal transfer of data at once transmission band occupation.
In the above embodiment of the present invention, it is the stream attribute value that in the transmission protocol package that is generated, has write this transmission protocol package correspondence, correspondingly, transmit when adjusting follow-up, be the stream attribute value of determining this transmission protocol package correspondence according to the stream attribute value that is write in the transmission protocol package, thereby realize transmitting the process of adjustment according to the stream attribute value.In other embodiments of the invention, also can in transmission protocol package, not write its corresponding stream attribute value, and be to use specific connection to identify the stream attribute value of the transmission protocol package that is sent in this connection, correspondingly, transmit when adjusting follow-up, be the stream attribute value of determining this transmission protocol package correspondence according to the employed connection of transmission protocol package, thereby realize transmitting the process of adjustment according to the stream attribute value.Such as, the stream attribute value of the transmission protocol package 1 that is generated is 1, the stream attribute value of transmission protocol package 2 is 2, then after generating, use the connection 1 of corresponding stream attribute value 1 to send transmission protocol package 1, and use the connection 2 of corresponding stream attribute value 2 to send transmission protocol package 2, like this, transmit when adjusting follow-up, owing to receive transmission protocol package 1 from connecting 1, determine the stream attribute value 1 of transmission protocol package 1 so can connect 1, owing to receive transmission protocol package 2 from connecting 2 according to this, determine the stream attribute value 2 of transmission protocol package 2 so can connect 2, thereby transmit adjustment accordingly according to this.
In the above embodiment of the present invention, be the property value in the transmission protocol package application layer to be mapped in the transmission protocol layer by borde gateway, make the transmission Control Node can discern and obtain the property value of transmission protocol package.And in other embodiments of the invention, borde gateway also can not carry out described mapping processing and directly transmission protocol package is forwarded to the transmission Control Node, by transmitting all mapping process described in the Control Node execution in step 204 to obtain the property value of all kinds of transmission protocol package, when carrying out mapping by the transmission Control Node, the transmission Control Node is that the property value in all kinds of transmission protocol package application layers is mapped among RLC and the MAC, perhaps, also can directly analyze and obtain property value in the transmission protocol package application layer by the transmission Control Node, the principle of its specific implementation process is same as the previously described embodiments.In addition, the all-router that sends transmission protocol package also can carry out described property value to transmission protocol package and shine upon, and carry out that the transmission Control Node is carried out in the foregoing description each transmission protocol package is transmitted the process of adjustment according to property value.
In addition, in order to reach the effect that better minimizing takies transmission bandwidth, the present invention also can combine with prior art, promptly, when the transmission Control Node is found to transmit adjustment, carry out in the process of transmission process in the priority described in employing the present invention according to each transmission protocol package, simultaneously, send the adjustment rate signaling to codec, make codec can adjust the encoding and decoding speed of self, reduce the minimizing that message transmission rate adapts to available bandwidth, can significantly reduce, release the pressure the taking of bandwidth.
The present invention realizes that on the uplink direction process that reduces transmission band occupation realizes that with the foregoing description is described the principle of minimizing transmission band occupation process is identical on downlink transmission direction.
The method and system of the minimizing transmission band occupation that the present invention proposes can use with all wireless networks in, such as Wideband Code Division Multiple Access (WCDMA) (WCDMA), code division multiple access (CDMA), wireless lan (wlan), WIMAX, DVB and broadcasting etc.In the time of in being applied to the WCDMA system, the borde gateway described in the above embodiment of the present invention can be exemplified as GGSN, and the transmission Control Node can be exemplified as RNS (comprising RNC and Node B).In the time of in being applied to the CDMA2000 system, the borde gateway described in the above embodiment of the present invention can be exemplified as PDSN, and the transmission Control Node can be exemplified as BSS (comprising BSC/PCF and BTS).
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a method that reduces transmission band occupation is characterized in that, this method may further comprise the steps:
A, the classification policy that data are classified is set, and the property value of Various types of data and the transmission policy of each property value correspondence are set;
B, the data of required transmission are classified and generate all kinds of transmission protocol package, and determine the property value of the transmission protocol package that generated according to the property value of the data of generation transmission protocol package according to described classification policy;
C, according to the transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence, when all kinds of transmission protocol package of transmission, adjust;
In steps A, described transmission policy comprises first transmission policy and second transmission policy, wherein, the first transmission policy correspondence makes the differing transmission protocols bag with different attribute value take first processing mode of different transmission bandwidths when transmission bandwidth can satisfy transmission requirement, the second transmission policy correspondence make the same host-host protocol with same property value wrap in transmission bandwidth can't satisfy transmission requirement the time first processing mode than its correspondence take still less second processing mode of transmission bandwidth;
Between step B and step C, further comprise: judge whether current transmission bandwidth can't satisfy transmission requirement, if, then in step C, according to second processing mode in second transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence all kinds of transmission protocol package are transmitted adjustment, otherwise, in step C, all kinds of transmission protocol package are carried out described adjustment according to first processing mode in first transmission policy of the property value of all kinds of transmission protocol package and set each property value correspondence.
2. method according to claim 1 is characterized in that, in steps A, the described step that the classification policy that data are classified is set comprises: according to the QoS attribute, different data streams is divided into inhomogeneous data;
Described property value is the stream attribute value.
3. method according to claim 1, it is characterized in that, in steps A, the described step that the classification policy that data are classified is set comprises: according to influence from high to low the degree of data in each class data flow to the business impression, the each several part data in each class data flow are divided into inhomogeneous data respectively;
Described property value is the bag property value.
4. method according to claim 1, it is characterized in that, in steps A, the described step that the classification policy that data are classified is set comprises: according to the QoS attribute, different data streams is divided into inhomogeneous data flow, and, the each several part data in each class data flow are divided into inhomogeneous data respectively according to the influence degree from high to low of data in each class data flow to the business impression;
Described property value is stream attribute value and bag property value.
5. method according to claim 4 is characterized in that, in steps A, the described step that the transmission policy of each property value correspondence is set comprises: the corresponding different transmission policys of various flows property value are set, and the corresponding different transmission policys of different bag property values are set;
Described step C comprises: at first adjust when all kinds of transmission protocol package of transmission according to the different transmission policys of the stream attribute value of all kinds of transmission protocol package and set various flows property value correspondence, adjust when all kinds of transmission protocol package of transmission according to the different transmission policys of the bag property value of all kinds of transmission protocol package and set difference bag property value correspondence then.
6. according to claim 2,4 or 5 described methods, it is characterized in that described stream attribute value is self-defining value, or the address and the port number information that connect.
7. method according to claim 1, it is characterized in that, describedly judge that whether current transmission bandwidth can't satisfy transmission requirement is according to the current signal intensity value, and/or the current error rate, and/or preserve the number of the formation of data in the current transmission Control Node, and/or current noise is recently carried out.
8. according to claim 1,2,3,4 or 5 described methods, it is characterized in that described transmission policy comprises: different transmission process modes, and/or different modulation systems, and/or different channel coding methods, and/or different encipherment protection degree.
9. method according to claim 8, it is characterized in that, when transmission policy is different transmission process mode, described different transmission process mode comprises: use the different priorities queue processing, and/or whether carry out packet loss and handle, and/or whether adopt affirmation mechanism, and/or whether select different paths, and/or use different transmission technologys;
When transmission policy was the different channels coded system, described different channels coded system was: convolution code, and/or Turbo code, and/or the time idle bit;
When transmission policy was different modulation system, described different modulating mode was: FSK or PSK;
Whether when transmission policy was different encipherment protection degree, described different encipherment protection degree was: select to encrypt, and/or select different cryptographic algorithm.
10. method according to claim 9, it is characterized in that, when described transmission policy comprises different priorities queue processing in the different transmission process modes, and/or whether carry out that packet loss is handled and/or when whether adopting affirmation mechanism, in step C, the described step of adjusting during all kinds of transmission protocol package in transmission comprises: with the corresponding transmission policy of property value is that transmission protocol package that higher priority queues is handled is distributed in the higher formation of priority and sends, and the corresponding transmission policy of the property value transmission protocol package that is the lower priority queue processing is distributed in the lower formation of priority send; And/or, with the corresponding transmission policy of property value for the transmission protocol package that directly sends and/or adopt affirmation mechanism directly and/or adopt affirmation mechanism to send, be that the transmission protocol package that abandons directly abandons with the corresponding transmission policy of property value.
11. method according to claim 1 is characterized in that, in step B, is carried out described classification, is generated the step that all kinds of transmission protocol package reach definite property value by the categorical attribute generation module;
Described step B further comprises:
B11, categorical attribute generation module write the property value of all kinds of transmission protocol package in the application layer of all kinds of transmission protocol package, then all kinds of transmission protocol package are sent to the categorical attribute mapping block;
After B12, categorical attribute mapping block receive all kinds of transmission protocol package, be mapped to respectively in the transmission protocol layer of all kinds of transmission protocol package after according to the mapping policy that sets in advance the property value in all kinds of transmission protocol package application layers being adjusted, then all kinds of transmission protocol package be sent to transmission control module;
Before carrying out described adjustment, described step C further comprises: transmission control module obtains the property value of all kinds of transmission protocol package from the transmission protocol layer of all kinds of transmission protocol package that receive;
In step C, carry out the step that described transmission is adjusted according to the property value of all kinds of transmission protocol package of being obtained by transmission control module.
12. method according to claim 1 is characterized in that, in step B, is carried out described classification, is generated the step that all kinds of transmission protocol package reach definite property value by the categorical attribute generation module;
Described step B further comprises:
B21, categorical attribute generation module write the property value of all kinds of transmission protocol package respectively in the application layer of all kinds of transmission protocol package, then all kinds of transmission protocol package are sent to the categorical attribute mapping block;
All kinds of transmission protocol package that B22, categorical attribute mapping block will receive are forwarded to transmission control module;
Before carrying out described transmission adjustment, described step C further comprises: transmission control module is mapped to the property value in all kinds of transmission protocol package application layers in the transmission protocol layer of self according to the mapping policy that sets in advance, and from transmission protocol layer, obtain the property value of all kinds of transmission protocol package, perhaps, transmission control module directly obtains the property value in all kinds of transmission protocol package application layers;
In step C, carry out the step of described adjustment according to the property value of all kinds of transmission protocol package of being obtained by transmission control module.
13., it is characterized in that described categorical attribute generation module is the network entity that network side has codec functions according to claim 11 or 12 described methods; Described categorical attribute mapping block is the borde gateway of network side; Described transmission control module is the network entity that network side is controlled transmission.
14., it is characterized in that described categorical attribute generation module, categorical attribute mapping block and transmission control module are in terminal according to claim 11 or 12 described methods.
15. according to claim 11 or 12 described methods, it is characterized in that, described mapping steps comprises: the property value in all kinds of transmission protocol package application layers is write direct in the transmission protocol layer, or, write in the transmission protocol layer after property value in all kinds of transmission protocol package application layers being revised as the property value of higher or low classification, or, the property value in all kinds of transmission protocol package application layers is mapped as self-defining property value.
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| CN1483257A (en) * | 2000-01-10 | 2004-03-17 | �����ɷ� | Method and device for supporting adaptive multi rate (AMR) data in cdma communication system |
| CN1529944A (en) * | 2001-07-13 | 2004-09-15 | ���Ͽع�����˾ | Method for transmitting real-time data on radio packet communication network |
| CN1650585A (en) * | 2002-05-03 | 2005-08-03 | 艾利森电话股份有限公司 | A QoS parameters translater |
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| CN1483257A (en) * | 2000-01-10 | 2004-03-17 | �����ɷ� | Method and device for supporting adaptive multi rate (AMR) data in cdma communication system |
| CN1529944A (en) * | 2001-07-13 | 2004-09-15 | ���Ͽع�����˾ | Method for transmitting real-time data on radio packet communication network |
| CN1375950A (en) * | 2002-04-28 | 2002-10-23 | 武汉汉网高技术有限公司 | Upstream grouping transmission rate control method for CDMA communication system |
| CN1650585A (en) * | 2002-05-03 | 2005-08-03 | 艾利森电话股份有限公司 | A QoS parameters translater |
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