CN1972280A - Communication system and method with classification service function - Google Patents

Abstract

This invention provides one degree service function communication system and method, wherein, the communication system comprises at least two user terminals and one communication network; the network comprises the following parts: one database to store user degree and relative parameters; one communication parameters determine device to determine communication parameters according to database user degree; one communication execution device to execute user terminal communication by use of communication parameter determine device.

Description

Communication system and method with classification service function

Technical field

The present invention relates to a kind of communication system and method, particularly a kind of communication system and method with classification service function.The present invention realizes the function of class-of-service by the fixing framework of flexible exchanging network and IMS network, mobile WCDMA/GSM (wideband code division multiplex networks) circuit domain flexible exchanging network and IMS network, CDMA circuit domain flexible exchanging network and IMS network is improved.

Background technology

The mobile WCDMA/GSM network architecture is to be defined by the 3GPP normal structure.In 3GPP circuit domain flexible exchanging network, (1) when the user registered, user profile downloaded to the MSC of end office (EO) (mobile switching centre) server from HSS (user attaching subsystem), and user profile generally comprises user's business information and sign relevant information; (2) during customer call, end office's MSC server receives call signaling, and analyzing called number is determined called subscriber's office direction, selects MGW (media gateway) then, distributes Access Network media bearer resource and and core net media bearer resource.After the called subscriber connected, the media bearer resource in the speech channel was connected, and the user converses.Concerning each user, the business of use can be differentiated, has not such as business such as calling transfer, voice mails; But after conversation was set up, all users' media bearer resource all was identical, such as speech quality, fail safe etc.

In 3GPP IMS (IP Multimedia System) network, when (1) user registers, authentication at first, by back registered user's log-on message in HSS, user signing contract information downloads to ownership S-CSCF (service call session control function entity) and mainly comprises user ID and service related information; (2) during customer call, the customer call signaling is routed to ownership S-CSCF.Ownership S-CSCF analyzes called party information, determines called position, calls out the called subscriber through P-CSCF (proxy call conversation control function entity) then.Behind core net and Access Network allocation medium bearing resource, speech channel is set up, and the media bearer in all users' the communication process all is to handle by identical method, does not have difference; (3) in the IMS network transmission quality is divided into four classes by type of service: interactive class, conversation class, background class, stream class.These transmission qualities are at business, the identical services of different user, and transmission quality is identical; (4) stipulated coding and decoding scheme in the IMS network, to the encoding and decoding that network is forbidden or can not be discerned, calling can be rejected; Being applicable to all users of whole network, is not at unique user; (5) stipulated the compression and the encrypted transmission of signaling in the IMS network, different user can select whether to use signaling compression transmission.The safe transmission of signaling is that all users are to use unified method.

The framework of fixed network is woven with definition in ETSI TISPAN normal structure and ITU-T standard group respectively.In the fixed network architectures of ETSI TISPAN definition, network is divided into service control layer face and transportation level, and wherein the service control layer face can be other networks such as PSTN/ISDN artificial network or IMS.If control subsystem is the IMS network, then with the network architecture basically identical of 3GPP IMS.

If control subsystem is the PSTN/ISDN artificial network, then (1) user need not explicit registration.When user 1 called out, call signaling sent to fixed network soft switch 1, and fixed network soft switch 1 analyzing called number sends signaling to fixed network soft switch 2, calls out called subscriber 2; (2) the fixed network soft switch can send signaling to MRS (Media Resource Server), and user 1 and user 2 are carried out the playback operation that collects the digits; (3) after professional the foundation, all users' media quality, transmission quality, fail safe all are identical.

The network architecture of ITU-T definition and TISPAN definition framework are similar, and just concrete function has a little difference on distributing.From the whole network angle, the functional characteristic of definition is all similar with TISPAN.

Mobile CDMA (code division multiplex) network architecture is to define in the 3GPP2 normal structure.Similar with the framework of 3GPP, functions entity and flow process are slightly variant, do not influence enforcement of the present invention, repeat no more.

Present network all from the PSTN/ISDN network progressively evolution come.In the PSTN/ISDN network, different users can have professional difference, whether uses business such as caller ID display, calling transfer, pre-payment as user customizable.But all users are when using these professional, and each session all is to take one or more TDM (time division multiplexing) time slot, and it all is identical that business is experienced (referring to attributes such as quality of service, fail safe).

In above-mentioned fixed network, WCDMA, cdma network, though introduced IP/ATM (InternetProtocol/ asynchronous transfer mode) transmission, for different users being provided the differentiated business impression provide the foundation, but these networks have still been inherited the way of PSTN/ISDN network, for all users provide identical business impression.

In the present network, the employed business of user can differentiation, pay different costs of use by the business of using, but the professional impression of all users' enjoyment all is identical, promptly can not provide differentiated service at aspects such as transmission quality, coding quality, fail safes to different user.

Though the requirement to transmission quality, coding and decoding scheme, fail safe aspect is provided in the IMS network, these requirements can not be at certain particular user at whole network and all users.

In the SCN network network of circuit switching (tradition based on), be subjected to the influence of circuit-switched network ability and ability of user terminal, what operator offered the user can only be that single business is experienced, and all is identical as all PSTN users' speech quality.

Along with the progressively IPization and the market segments of network, need a kind of communication system and method that differentiated service can be provided for different user.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of communication system and method with classification service function, it can provide the different business impression to different user.

According to the communication system with classification service function of the present invention, it comprises at least two user terminals and a communication network, this communication network comprises: a database, be used to store described user rank and with the corresponding relevant parameter of this rank, one messaging parameter is determined device, be used for according to the rank and the parameter that are stored in user described in the database, determine the employed messaging parameter of communication, one communication final controlling element, its messaging parameter that utilizes messaging parameter to determine that device is determined is carried out the communication of described user terminal.

According to the communication means with classification service function of the present invention, it comprises: step a, the user's that setting need communicate rank and with the corresponding relevant parameter of this rank, step b, the user's that the needs of setting according to step a communicate rank and parameter are determined the employed messaging parameter of communication between the user, step c, the messaging parameter that utilizes step b to determine is carried out the communication between the user.

According to the present invention, operator can offer user's differentiated business impression more flexibly, and promptly operator is divided into different ranks to the user, provides the differentiated business impression to different user rank user's identical services.These differentiated business impressions comprise the processing of aspects such as different media qualities, transmission quality, fail safe.In addition, can also collect different expenses, help operator and segment market, for the different user group customizes different service strategies at these differentiated business impressions.

Description of drawings

Fig. 1 is according to the abstract logic network configuration with communication system of class-of-service of the present invention.

Fig. 2 is according to the structured flowchart with WCDMA IMS network of class-of-service of the present invention.

Fig. 3 is according to the structured flowchart with fixed network flexible exchanging network of class-of-service of the present invention.

Embodiment

In the present invention, a kind of system and method that the user is provided class-of-service has been proposed.User's class-of-service refers to that this impression is not meant operational difference, and is meant the difference on the identical services use experience for different users provides different business impressions.

The present several aspects of the service receptor of differentiation: media quality difference, transmission quality difference, user security difference.Below explanation respectively:

1, the difference of media quality:

The difference of media quality comprises two aspects:

(1) code/decode type difference: resources such as the audio sampling frequency of different code/decode types, occupied bandwidth and network throughput are all different, and the Media Stream of different quality is provided to the user.

A. the audio coding decoding of high sample frequency can transmit more accurate voice signal

As encoding and decoding G.722 are 16K sample frequencys, other as G.711, G.723, G.729, encoding and decoding such as AMR all are the 8K samplings, can transmit the music of high-fidelity with encoding and decoding G.722.Under the situation that ability of user terminal meets the demands, only allow the higher-level user to use G.722 encoding and decoding, the lower-level user uses the encoding and decoding of other low sample frequency or low bandwidth, just can provide differentiated service;

The media quality difference of B. different audio/video encoding/decoding transmission

As G.711, G.722, AMR, EVRC, G.729, G.723 wait the audio coding decoding of different bandwidth can transmit the audio signal of different quality; As H.261, H.263, the coding and decoding video of different bandwidth such as MPEG4 can transmit the vision signal of different quality; Only allow the higher-level user to use the encoding and decoding of high bandwidth.

C. adopt the different coding method can improve transmission quality to user data service

As facsimile service is used T.38 coded system respectively, than G.711 transparent transmission mode quality is higher;

As professional with Modeom Relay (Modeom relaying) coded system, than transparent transmission mode quality height G.711 to Modeom;

Only allow the higher-level user to use T.38 coded system and Modeom Relay coded system.

(2) media quality enhancement process difference: user media stream is made enhancement process, can improve media flow quality.

A. audio quality strengthens: use special audio quality enhancement process technology, can make user's voice quality better;

B. video quality strengthens: use dedicated video quality enhancement process technology, can make user picture quality better;

C. audio-visual synchronization: on the network equipment, do audio-visual synchronization, can weaken the audio frequency and video step-out phenomenon of user terminal;

D. to the circuit switching mobile subscriber, can provide the professional voice quality that reduces of TFO (Tandem Free Operation) to damage.

Can only use these Media Stream enhancement techniques to the higher-level user.

2, the difference of Network Transmission quality:

(1) IP transmission network Qos (service quality) difference:

The packet loss of IP network, time-delay, shake, error code etc. can influence the quality of user media stream;

Can use the transmission means of low packet loss ratio, low time delay, low jitter to higher-level user's audio-video frequency media stream; The data Business Stream is used the transmission means of low packet loss ratio, low error rate.Can reduce packet loss by redundant transmission.

(2) service priority:

In network congestion or when busy, the higher-level user preferentially carries out business;

The higher-level user is used high service priority, and the lower-level user uses low service priority;

(3) reliability:

When network failure, can guarantee that higher-level user's business do not interrupt, guarantee professional high availability and continuity;

The higher-level user made be used as high reliability and handle;

3, user security difference:

(1) encrypt:

Can be for the higher-level user provide End to End Encryption, the user can select cryptographic algorithm and key, prevents that user profile is stolen, and comprises the tamper-proof of chain of command and transmission medium face;

(2) tamper-proof:

Can guarantee higher-level user's business information integrality, prevent from customer service normally to be carried out user profile malicious modification or unauthorised broken; Comprise the tamper-proof of chain of command and transmission medium face;

(3) attack protection:

Can prevent attack to sending to higher-level user's information filtering to the user; The attack protection that comprises chain of command and transmission medium face;

(4) anti-virus:

Can prevent that user terminal is infected by the virus, comprise rogue programs such as destructive virus, wooden horse; The anti-virus that comprises chain of command and transmission medium face;

(5) anti-junk information:

Can prevent that the user is subjected to the interference of junk information, as spam and note.

The user is divided rank multiple strategy is arranged.Plain mode is not divide rank, whether selects certain service for use by customization, by service of selecting and corresponding parameters charge.Another kind of mode is that the user is divided into several ranks, and is more convenient reasonable in operation management like this.Below the main explanation second way, first kind of mode can be thought the special case of the second way.

In the second way, operator can be divided into a plurality of ranks to the user, and each rank user enjoys different service impressions, rate difference in media quality, transmission quality, fail safe;

Each rank user uses those functions of concrete correspondence to depend on the operation strategy, and the service of higher-level user's enjoyment is The more the better more in principle.

Below, provide an example of user's classification.In this example, the business impression is divided into three ranks: be higher than SCN (based on the network of circuit switching) performance, be equivalent to the SCN performance, be lower than the SCN performance.

The first kind: the VIP user's (requirement is higher than the experience of SCN) who requires high-quality, high reliability, high security;

Second class: the domestic consumer's (requirement is equivalent to SCN and experiences) that requires run-of-the-mill, general reliability, Generally Recognized as safe;

The 3rd class: lower to quality requirement, as to pay attention to availability and low rate low end subscriber (tolerable is lower than the experience of SCN).

Table 1 has shown the service function that this three classes user can experience.

Experience functions	First kind user	The second class user	The 3rd class user
				Audio coding decoding	All encoding and decoding	Encoding and decoding except that G.711	All encoding and decoding except that G.711/G.722
Coding and decoding video	All encoding and decoding	Encoding and decoding except that H.261	Encoding and decoding except that H.261

Data service	All transmission meanss	All transmission meanss	Can only use G.711 transparent transmission mode
				Audio quality strengthens	Have	Do not have	Do not have
Video quality strengthens	Have	Do not have	Do not have
				Audio-visual synchronization	Have	Have	Do not have
TFO	Have	Have	Do not have
				Transmission Qos	High (packet loss, time-delay, shake)	In	Low
Service priority	High	In	Low
				Reliability	High	In	Low
Information series business strengthens	Have	Do not have	Do not have
				Encrypt	Have	Have	Do not have
Tamper-proof	Have	Do not have	Do not have
				Attack protection	Have	Do not have	Do not have
Anti-virus	Have	Have	Do not have
				Anti-junk information	Have	Do not have	Do not have

An example of table 1 user classification

In the present invention, whether certain service can be used by the user, also is subject to terminal capability and conversation the opposing party's service of being enjoyed and terminal capability.Do not support to encrypt as certain user's terminal, then as caller or calledly all can not enjoy cryptographic services.

In the present invention, corresponding to the business impression of user's usage varianceization, need collect different expenses.

Charging policy can have following dual mode:

(1) the user's intercommunication and the charging policy of same levels

User's intercommunication of same levels, limited by terminal capability, can not guarantee to enjoy all services, need take charging policy flexibly, as rates ground can be: the enhancement service that does not relate to terminal capability be as rates ground, and the enhancement service that relates to terminal capability is as present.

A. to not relating to the service of terminal capability:

As transmission quality, media quality etc., irrelevant with user's terminal capability; The conversation of same level is pressed calling and called charging, single-direction and dual-direction charge all relatively rationally.

B. to relating to the service of terminal capability:

As encrypting, can be not as rates ground, as add-on.Even can not using, communication process do not influence charging yet.

2) the user's intercommunication and the charging policy of different stage;

User's intercommunication of different stage, the dual restriction of service that is subjected to terminal capability and enjoys than the lower-level user; Same treatment is done in terminal capability restriction and the conversation of above-mentioned same level, only considers the influence of different stage below:

If one-way charge is then carried out business by the rank of paying side;

If two-way charging is then carried out business by the higher level in the calling and called, calling and called are respectively by rank charging separately.

About the user class management, have following dual mode:

(1) user specifies a rank as default level when opening an account or register, and the user does not specify and just uses this rank when using business; This default level can be modified;

(2) user can specify this employed business-level of conversing by specific method when each conversation;

As default level is the user who is equivalent to the SCN performance, wishes that certain conversation can enjoy greater security, then can add to dial specific number and specify high-level; This Iterim Change can be different at aspects such as charging policy to other user of certain grade and the fixing user who uses corresponding level.

Below, with reference to Fig. 1, describe according to an example with communication system of class-of-service of the present invention.This communication system is suitable for fixed network soft-exchange construction network/IMS, WCDMA/GSM CS/IMS, different networks such as CDMA CS/IMS.Structure as shown in Figure 1 is for unified explanation, these networks are carried out abstract, and the abstract logic network configuration that obtains.

Square frame in Fig. 1 is represented the functional entity set, may gather corresponding a plurality of physical equipment form by a functional entity, also may gather corresponding physical equipment form by a plurality of functional entitys, and the functional entity that the present invention is not related to does not embody.The function declaration of each functional entity set is as follows:

Management-Function (management function entity) 13 is for chargeing and the management maintenance functional entity.At least to increase user class information in the ticket by the Management-Function13 generation, also should comprise the concrete parameter of user class correspondence, and conversation the opposing party's rank relevant parameter.In addition, Management-Function13 has the interface that the user is provided inquiry, modification level and rank corresponding parameters.

User-Profile (user property entity) 14 is for depositing the entity of user contracting data.In the mobile network, generally be in HSS system (user attaching subsystem), to deposit user contracting data; In fixed network, user contracting data can be to be stored in soft switch or the PSTN switch.

The content of storing in User-Profile14 comprises: the class information of the signatory or registration of user, and and the parameter of the media quality of this rank correspondence, transmission quality, fail safe aspect.Concrete, the content of storing in User-Profile14 comprises following parameter at least, the concrete value of parameter is determined by hierarchical policy:

A. user class: can be divided into several ranks by carrier policy, the relation of each rank and following explanation parameter can be corresponding flexibly;

B. operable audio coding decoding:

Span: supported all audio coding decodings of network, as G.711/G.722/G.729/G.723/AMR/EVRC waiting

C. operable coding and decoding video:

Span: supported all audio coding decodings of network, as H.261/H.263/MPEG4 waiting

D. operable data service mode

Span: transparent transmission mode or trunking scheme (T.38 trunking scheme is to Fax (fax), and the Modeom business is referred to Modeom Relay mode)

E. whether use audio quality to strengthen

Span: be, not

F. whether use video quality to strengthen

Span: be, not

G. whether support audio-visual synchronization

Span: be, not

H. whether support TFO

Span: be, not

I. transport quality parameters:

Span: concrete IP network packet loss, delay, jitter parameter, whether use the redundant transmission method

J. service priority:

Span: concrete priority, as 1～15, the big more priority of numerical value is high more

K. reliability class:

Span: concrete reliable rank, as high, medium and low

L. encryption parameter comprises following parameter:

Selectable cryptographic algorithm, span: the cryptographic algorithm that the user selects, as RSA, AES etc.

Encryption key can be generated by system or user

Cryptographic object is as encrypting signaling encryption, IP infill layer, RTP infill layer, media encryption, key message such as DTMF

M. whether tamper-proof

Span: be, not

N. attack protection whether

Span: be, not

O. anti-virus whether

Span: be, not

P. whether prevent junk information

Span: be, not

In addition, setting, inquiry, the modification interface that externally provides business-level and relevant parameter is provided this User-Profile14.

ASF (application server) 15 is the set of service application functional entity.It has as the professional SCF (service control function) of traditional intelligence, based on the functions such as application server of Parlay, OMA; The classification service function of whole communication system is not subjected to the function effect of ASF15, but system can utilize the user class parameter to provide abundanter professional flexibly at ASF15.

Session-CF (conversation control entity) 17 is the session control logic entity.In flexible exchanging network, this entity generally is to realize on Softswitch; Corresponding S-CSCF (service call session control function entity) entity in the IMS network.This Session-CF17 obtains user class information from User-Profile14, and carries out user's business-level parameter negotiation.

When if the user has explicit registration process, Session-CF17 reads customer service rank and corresponding parameter from User-Profile14, for subsequent voice calls or professional the use; If there is not explicit registration process, when carrying out business, read again.

The user call out or other when professional, the negotiation of Session-CF17 control user class and corresponding parameter;

A. if two users' rank or parameter difference, then Session-CF17 control consults to make the parameter unanimity of correspondent, Offer/Answer (providing/reply) mechanism of using similar SIP (session initiation protocol) to call out is generally got common factor and more low-level parameter among both;

B. if user terminal is not supported relevant parameter, then Session-CF17 redefines the conversation operation parameter: do not support to encrypt as terminal, then cancel encryption parameter;

Rank and parameter that the final service that is negotiated by Session-CF17 uses will be recorded in the ticket, as rates ground.

In addition, Session-CF17 with this business-level and parameter, passes to other entities, as TDM-GCF, Packet-GCF, MRFC, PDF etc. when business is carried out when rank that negotiates the final service use and parameter.

If signaling needs to encrypt in the core net transmission, then Session-GCF17 and user terminal or legacy user's access device carries out the encryption parameter negotiation of subscriber signaling, and follow-up signaling all uses negotiation parameter to encrypt; Signaling in the core net transmission also can be carried out completeness check, to prevent destruction.

TDM-GCF (TDM gateway control function entity) 16 is the controlled entity of TDM-GWF (TDM gateway function entity) 22, be used for the chain of command intercommunication of TDM network and packet network, as inserting MGCF (MGCF) functional entity in fixed network soft switch, mobile soft switch or corresponding IMS (IP Multimedia System) net.

In business is carried out, if TDM-GCF16 directly controls TDM-GWF22, then TDM-GCF16 is according to the ability of TDM-GWF22, receive the user's who negotiates business-level and corresponding parameter from Session-CF17, and business-level parameter transmission TDM-GWF22, control TDM-GWF22 realizes business need.If transmission controlled function entity is arranged between TDM-GCF16 and the TDM-GWF22, then TDM-GCF16 control transmission controlled function entity is realized above process.

TDM-GCF16 passes to entities such as transmission controlled entity 20 or TDM-GWF22 to the user class parameter by following agreement, realize business-level and parameter on entities such as transmission controlled entity 20 or TDM-GWF22.The typical control agreement is as H.248, Diameter.

Packet-GCF18 is the controlled function entity of packet gateway Packet-GWF24, is used for the chain of command intercommunication or the access of packet network and packet network, as the P-CSCF entity among the corresponding IMS, and the perhaps border intercommunication controlled entity in the fixed network.

In business was carried out, Packet-GCF18 received customer service rank and the parameter that negotiates by for example Session Initiation Protocol from Session-CF17.As H.248, Diameter passes to transmission controlled entity 20 to user class and parameter to Packet-GCF18 by the typical control agreement, and transmission controlled entity 20 is done strategic decision-making, realizes the parameter of business need with control Packet-GWF24.

For example, if the control signaling needs to encrypt, then Packet-GCF18 and user terminal carry out the encryption parameter negotiation of subscriber signaling, and follow-up signaling all uses negotiation parameter to encrypt; If it is tamper-proof that chain of command need be supported, then Packet-GCF18 need do completeness check to the signaling that sends to user signaling or reception, and destroyed message is dropped; If chain of command need be supported attack protection, then Packet-GCF18 will filter the message that sends to the user, prevents the attack to the user; If chain of command need be supported anti-virus, then Packet-GCF18 will do virus checking to the message that sends to the user; If chain of command need be supported anti-junk information, then Packet-GCF18 will filter the message that sends to the user, to junk information, as note, does discard processing.

MRFC (media resource function controlled entity) 19 is the controlled entity of MRFP (media resource processing entities) 21.This entity is arranged in the IMS network; In fixing flexible exchanging network, this entity is equivalent to the control section of MRS; In mobile flexible exchanging network, this function realizes at Softswitch.

In business is carried out, if MRFC19 directly controls MRFP21, then MRFC19 receives the user's who negotiates business-level and corresponding parameter according to the ability of MRFP21 from Session-CF17, and business-level parameter transmission MRFP21, control MRFP21 realizes business need.If between MRFC19 and the MRFP21 transfer function controlled entity is arranged, then MRFC19 control transmission controlled function entity is realized above process.As H.248, Session Initiation Protocol passes to transmission controlled entity 20 or MRFP21 to the user class parameter to this MRFC19 by the typical control agreement.

Transmission controlled function entity (Transport-Control-Funtion) 20 is transmission controlled function entity, and it has as functions such as strategic decision-making and transfer resource controls, its control transmitted in packets entity 23.PDF (strategy decisive function) entity among this transmission controlled entity 20 corresponding IMS, the optional existence of transmission controlled function between TDM-GCF and TDM-GWF.

Transmission controlled function entity 20 is made policy control according to business-level and parameter, and control business-level and parameter are achieved on transmission controlled function entity.

MRFP (media resource processing entities) 21 is the media resource processing entities, is used to handle media resource, the MRFP entity in its corresponding IMS network.MRFP21 receives user class and corresponding parameter from MRFC19, presses the user class parameter and realizes difference service.

TDM-GWF22 realizes the functional entity of TDM to packet bearer, media conversion, as equipment forms such as fixed network AG (IAD), TG (Tandem Gateway), mobile MGW, and IM-MGW in the perhaps corresponding IMS network (intercommunication media gateway) entity.TDM-GWF22 receives user class and corresponding parameter from TDM-GCF16, presses the user class parameter and realizes difference service.

Packet-Transport (transmitted in packets entity) 23 is the entity that comprises various realization routes and transfer function.This Packet-Transport23 receives user class and the corresponding parameter that Session-CF17 determines from transmission controlled function entity 20, presses the user class parameter and realizes difference service.

Packet-GWF (packet gateway function entity) 18 is for realizing being grouped into the functional entity of packet bearer, media conversion.This Packet-GWF18 for example is: realizations such as gruping insertion network pass, borde gateway, mobile gateway are grouped into the entity of grouping intercommunication, the GGSN in the perhaps corresponding IMS network (GPRS gateway node) entity.This Packet-GWF18 receives user class and the corresponding parameter that session-CF17 determines from transmission controlled function entity 20, presses the user class parameter and realizes difference service.

Legacy-User12 is the user who inserts with Circuit Switching Network, as PSTN/ISDN user, and the WCDMA/GSM/CDMA circuit domain user.The difference service of Legacy-User12 realizes on TDM-GWF22.

Packet-User11 is necessarily intelligent for having, by the terminal of packet transmission networks access.Packet-User11 can be linked into core network by various packet networks, supposes can satisfy user's classification demand from Packet-User11 to the network the core network edge, as IMS user, fixed network IP user etc.Packet-User11 requires to support functions such as above-mentioned transmission quality, media quality, fail safe, to realize difference service.If can not support that difference service can terminate on Packet-GWF24.

In the present invention, transmission face entity TDM-GWF22, Packet-GWF24, MRFP21, business-level and parameter that Packet-Transport23 transmits according to chain of command entity TDM-GCF16/Session-CF17/Packet-GCF18/MRFC19 realize that the differentiation of professional media quality, transmission quality, fail safe is handled.

Concrete, transmission face entity TDM-GWF22, Packet-GWF24, MRFP21, Packet-Transport23 is according to the indication of chain of command entity, use different audio coding decodings, coding and decoding video and data service coded system, determine whether to use enhancement function simultaneously: (1) audio quality strengthens: consider the background noise and the echo that remove in the conversation, strengthen useful signal; (2) video quality strengthens: optimize video quality; (3) audio-visual synchronization technology: the step-out that reduces audio frequency and video; Or the like.

Transmission face entity TDM-GWF22, Packet-GWF24, MRFP21, Packet-Transport23 realize the difference service of transmission quality according to the indication of chain of command entity: (1) uses different transmission Qos parameters: different bandwidth, delay, shake, packet loss parameter; (2) use different priority: be higher-level user's reserved resource, particularly in network congestion or when busy, the higher-level user preferentially carries out business; (3) session Qos detection, feedback and optimization: detect higher-level user's transmission Qos in real time, when Qos reduces, feed back to the chain of command entity, recover and optimization Qos; As use rtcp protocol detected transmission Qos; (4) redundant transmission: according to network quality, the higher-level user is used redundant transmission, reduce packet loss; As use RFC2198, RFC2733 redundant transmission techniques; (5) redundancy backup: provide more reliable backup to the higher-level user, dual-homed as Hot Spare, guarantee user's under abnormal conditions business continuance.

Transmission face entity TDM-GWF22, Packet-GWF24, MRFP21, Packet-Transport23 is according to the indication of chain of command entity, realize the difference service of user security: (1) end-to-end media encryption: press cryptographic algorithm, key that chain of command transmits, medium are carried out encryption; (2) tamper-proof: as medium to be carried out completeness check, prevent in transmission course destroyed; (3) attack protection: the transmission speed of control media message prevents to send the broad medium message to the user; (4) anti-virus: media message is carried out virus checking, comprise rogue programs such as destructive virus, wooden horse; (5) anti-junk information: undesirable media message is abandoned, prevent to send junk information to the user.

In the communication system of Fig. 1, the transmission and the negotiation of user class and relevant parameter supported in the interface expansion between entities such as chain of command entity TDM-GCF16/Session-CF17/Packet-GCF18/MRFC19, as the expansion of Session Initiation Protocol being supported the negotiation and the transmission of aforesaid parameter; The retrieval and the transmission of user class and relevant parameter supported in the interface expansion between Management-Function13/User-Profile14 and TDM-GCF16/Session-CF17/Packet-GCF18/MRFC19 entity, as the expansion of Diameter being supported the retrieval and the transmission of aforesaid parameter; The transmission and the negotiation of user class and relevant parameter supported in expansion between chain of command entity TDM-GCF16/Session-CF17/Packet-GCF18 entity and transmission face entity TDM-GWF22/Packet-GWF24/MRFP21/Packet-Transport23 entity, as H.248 agreement, Diameter, Cops protocol extension being supported the negotiation and the transmission of aforesaid parameter.

As can be seen, increased the function of class-of-service, and the overall structure of network has not been changed, only need get final product by the function that increases network entity, the interface flow process of revising between each entity according to the communication system of this aspect.

In abstract logic network configuration shown in Figure 1, be that example describes with two kinds of different types of user terminals (being Legacy-User12 and Packet-User11).But the present invention is fit to the user terminal of identical type too, and for example two user terminals all are Packer-User.At this moment, can not need whole members as shown in Figure 1, for example can omit TDM-GWF22 and TMD-GCF16 entity, this is because the function that does not need these entities to realize.And the present invention is suitable for for example multi-party communication of Web conference type too, and its principle is similar with the principle that both sides communicate, and is not described in detail at this.

In addition, in this communication system, also can only carry out classification to above-mentioned described partial parameters, for example, the parameter relevant with rank can only be the parameter relevant with media quality.And the parameter relevant with media quality also can only comprise the parameter relevant with separating type of coding etc.

From top description as can be seen, when the classification that relates to and relevant parameter are relevant with encryption etc., during the parameter used when Session-CF17 determines communication, except needs are considered the parameter of communicating pair, also need to consider the performance of communication terminal of communicating pair and the performance of carrying out the transmission entity of this communication.

Below, describe according to the communication means with classification service function of the present invention.This communication means comprises the steps:

Step a, the user's that setting need communicate rank and with the corresponding relevant parameter of this rank.The strategy of setting user class and parameter in this step has been described in the above.

Step b, the user's that the needs of setting according to step a communicate rank and parameter are determined the employed messaging parameter of communication between the user.In this step, Session-CF17 is according to being stored in messaging parameter among the User-Profile14 employed messaging parameter when determining to communicate by letter, and concrete definite method has been described in front.

Step c, the messaging parameter that utilizes step b to determine is carried out the communication between the user.In this step, the messaging parameter that communication control entity (for example, Packet-GCF18, TDM-GCF16 etc.) is used when Session-CF17 receives the communication of determining, control transmission entity (for example, Packet-GWF, TDM-GWF22 etc.) communicates.

Below, with reference to Fig. 2, be described in the embodiment of WCDMA IMS (IP Multimedia System) network

The corresponding relation of the functional entity among each functional entity in the structure shown in Figure 2 and the abstract logic figure shown in Figure 1 is as follows: HSS (user attaching subsystem) 34 is the entity of storing user subscription data, is equivalent to the User-Profile14 among Fig. 1; Application server 35 is equivalent to the ASF15 among Fig. 1 for system provides miscellaneous service; MGCF (MGCF entity) 36 is the chain of command entity of IMS and CS (circuit switching) territory intercommunication, is equivalent to the TDM-GCF16 among Fig. 1; S-CSCF (service call session control function entity) 44 is equivalent to the Session-CF17 among Fig. 1 for calling out and service processing entity; P-CSCF (proxy call conversation control function entity) 38 is an IMS customer call agent functionality entity, is equivalent to the Packet-GCF18 among Fig. 1; PDF (policy deciding functional entity) 39 is a policy deciding functional entity, is equivalent to the transmission controlled function entity 20 among Fig. 1; MRFC37 and MRFP42 are chain of command and the loading end entity that media resource is handled, and are equivalent to MRFC19 and MRFP21 among Fig. 1; IM-MGW (intercommunication media gateway entity) 20 is the transmission bearer face entity of IMS and the intercommunication of CS territory, is equivalent to the TDM-GWF22 among Fig. 1; GGSN (GPRS gateway node) 43 is the gprs service gateway node, is equivalent to the Packet-GWF24 among Fig. 1; Mangement-Function33, Legacy-User32, Packet-User31, the Mangement-Function13 among IP transmission network 42 and Fig. 1, Legacy-User12, Packet-User11, Packet-Transport23 is corresponding.

Below, with reference to Fig. 2, carrying out video call with Packet-User31 and Legacy-User32 is example, and the implementation method of user's classification in WCDMA IMS network is described.

At first, Packet-User31 registers in the IMS network, and S-CSCF44 reads user signing contract information from HSS34, comprises user's business-level and corresponding parameter: media quality relevant parameter, transmission quality relevant parameter, fail safe relevant parameter.Packet-User31 makes a call, and call signaling is transferred to P-CSCF38 from GGSN43 through PDF39, is routed to S-CSCF44 again.S-CSCF44 analyzes called party information, determines that called office backward, sends to MGCF36 to call signaling, wherein carries customer service rank relevant parameter in the call signaling.The CAMEL-Subscription-Information of called Legacy-User32 is stored on end office's Softswitch, after receiving calling, by called subscriber's business-level relevant parameter, S-CSCF44 negotiates the business-level of this conversation and relevant parameter (parameter determine that principle front done explanation); Return to Packet-User31 simultaneously,, then require to continue consult, up to both sides' parameter of reaching an agreement if Packet-User31 does not support some parameter.Business-level parameter after the negotiation is handed down to IM-MGW40 by MGCF36, and IM-MGW40 presses the business-level parameter, determines media quality, transmission quality, the fail safe (concrete parameter front has been done explanation) of this calling, and the assigns talk related resource.Behind the end of conversation, Management-Function33 generates the ticket that comprises the business-level parameter.

Below, with reference to Fig. 3, be described in the embodiment of fixed network flexible exchanging network.

The corresponding relation of the functional entity among each functional entity in the structure shown in Figure 3 and the abstract logic figure shown in Figure 1 is as follows: fixedly Softswitch 54 comprises the TDM-GCF16 among as shown in Figure 1 the abstract logic figure, Session-CF17, entities such as User-Profile14; MRS (Media Resource Server) 57 comprises MRFC19 and MRFP21 entity; AG/TG/SG (IAD/Tandem Gateway/SGW) 55 insert TDM users or and the PSTN network interworking, corresponding TDM-GWF22; SBC (session border control gateway) 58 comprises Packet-GCF18, the Packet-GWF24 entity; MangementFunction53, IP transmission network 56, Legacy-User52, Packet-User51 respectively with as shown in Figure 1 abstract logic figure in Mangement Function13, Packet-Transport23, Legacy-User12, Packet-User11 is corresponding.

Below, with reference to Fig. 3, carrying out video call with Packet-User51 and Legacy-User52 is example, and the implementation method of user's classification in the fixed network flexible exchanging network is described.

Packet-User51 makes a call, and call signaling is from SBC58 to fixing Softswitch 54; Fixedly Softswitch 54 is analyzed called party informations, determine called after, call signaling is sent to Legacy-User52; User's CAMEL-Subscription-Information all is stored in fixedly on the Softswitch 54, and fixedly Softswitch 54 can be consulted the parameter of determining that this session is used according to calling and called both sides' business-level parameter and Packet-User51; Business-level parameter after the negotiation is handed down to AG/TG/SG55 by fixing Softswitch 54, AG/TG/SG55 presses the business-level parameter, determine media quality, transmission quality, the fail safe (concrete parameter front has been done explanation) of this calling, and the assigns talk related resource; Behind the end of conversation, Management-Function53 generates the ticket that comprises the business-level parameter.

According to the present invention, by user's classification, different processing modes is used in the media quality of identical services, transmission quality, fail safe etc., make the user enjoy the differentiated business impression, personalized service is provided, collect different expenses.The present invention helps operator and segments market, for the different user group customizes different service strategies.

Though the present invention expresses in more mode; but be not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; can do various changes and retouching, so protection scope of the present invention is as the criterion when looking the patent claim person of defining.

Claims (23)

1. communication system with classification service function, it comprises at least two user terminals and a communication network, this communication network comprises:

One database, be used to store described user rank and with the corresponding relevant parameter of this rank,

One messaging parameter is determined device, is used for according to the rank and the parameter that are stored in user described in the database, determines the employed messaging parameter of communication,

One communication final controlling element, its messaging parameter that utilizes messaging parameter to determine that device is determined is carried out the communication of described user terminal.

2. communication system as claimed in claim 1, wherein,

Messaging parameter is determined the user's communications parameter that device communicates as required, gets their common factor or more low-level parameter, as the employed parameter of communication.

3. communication system as claimed in claim 2, wherein,

The relevant parameter that is stored in the database comprises: the parameter relevant with media quality, the parameter relevant with the Network Transmission quality, and in the parameter relevant with user security one or more.

4. communication system as claimed in claim 3, wherein,

The parameter relevant with media quality comprises: with separate type of coding, and one or more relevant parameters in the media quality enhancement process.

5. communication system as claimed in claim 3, wherein,

The parameter relevant with the Network Transmission quality comprises: with Qos, and service priority, the parameter that one or more in the reliability are relevant.

6. communication system as claimed in claim 3, wherein,

The parameter relevant with user security comprises: tamper-proof with encryption, and attack protection, anti-virus, one or more the relevant parameters in the anti-junk information.

7. communication system as claimed in claim 1, wherein,

Described messaging parameter is determined device, according to rank that is stored in user described in the database and parameter, and the performance of user terminal, the performance of described communication final controlling element is determined the employed messaging parameter of communication.

8. communication system as claimed in claim 1, wherein,

Described communication final controlling element comprises:

Realize the transmission face entity of transmission; And

Determine that from described messaging parameter device receives the messaging parameter of determining, the chain of command entity of control transmission face entity.

9. communication system as claimed in claim 8, wherein,

Described transmission face entity comprises:

The media resource processing entities is used to handle media resource;

TDM gateway function entity is used to realize the function of TDM to packet bearer, media conversion;

The transmitted in packets entity is used to realize route and transfer function; And

The packet gateway function entity is used to realize being grouped into the function of packet bearer, media conversion.

10. communication system as claimed in claim 9, wherein,

Described chain of command entity comprises:

Be used to control the TDM gateway control function entity of TDM gateway function entity,

Be used to control the packet gateway controlled function entity of packet gateway function entity,

Be used to control the media resource processing entities the media resource function controlled entity and

Be used to control the transmission controlled function entity of transmitted in packets entity.

11. communication system as claimed in claim 10, wherein,

TDM gateway control function entity is by transmission controlled function entity control TDM gateway function entity, and packet gateway controlled function entity is by transmission controlled function entity control packet gateway function entity.

12. as each described communication system of claim 1-11, it further comprises:

One message accounting is used for determining the messaging parameter that device is determined according to described messaging parameter, and the communication between the user is chargeed.

13. communication system as claimed in claim 12, wherein,

Described communication network is fixing flexible exchanging network, any in IMS network, mobile WCDMA/GSM circuit domain flexible exchanging network and IMS network, CDMA circuit domain flexible exchanging network and the IMS network.

14. communication system as claimed in claim 10, wherein,

When described communication system is WCDMA IMS network, database is the user attaching subsystem, TDM gateway control function entity is the MGCF entity, messaging parameter determines that device is a service call session control function entity, packet gateway controlled function entity is a proxy call conversation control function entity, transmission controlled function entity is a policy deciding functional entity, and TDM gateway function entity is the intercommunication media gateway, and the packet gateway function entity is the GPRS gateway node.

15. communication system as claimed in claim 10, wherein,

When described communication system is the fixed network flexible exchanging network, TDM gateway control function entity, messaging parameter determine that device and database are fixing Softswitch, media resource function controlled entity and media resource processing entities are Media Resource Server, TDM gateway function entity is IAD/Tandem Gateway/SGW, and packet gateway controlled function entity and transmitted in packets entity are the session border control gateway.

16. the communication means with classification service function, it comprises:

Step a, the user's that setting need communicate rank and with the corresponding relevant parameter of this rank,

Step b, the user's that the needs of setting according to step a communicate rank and parameter are determined the employed messaging parameter of communication between the user,

Step c, the messaging parameter that utilizes step b to determine is carried out the communication between the user.

17. communication means as claimed in claim 16, wherein,

In step b, get the common factor or the more low-level parameter of the user's that need communicate parameter, as the employed parameter of communication.

18. communication means as claimed in claim 17, wherein,

The parameter of setting in step a comprises: the parameter relevant with media quality, the parameter relevant with the Network Transmission quality, and in the parameter relevant with user security one or more.

19. communication means as claimed in claim 18, wherein,

The parameter relevant with media quality comprises: with separate type of coding, and one or more relevant parameters in the media quality enhancement process.

20. communication means as claimed in claim 18, wherein,

The parameter relevant with the Network Transmission quality comprises: the parameter relevant with the Network Transmission quality comprises: with Qos, and service priority, the parameter that one or more in the reliability are relevant.

21. communication means as claimed in claim 18, wherein,

The parameter relevant with user security comprises: tamper-proof with encryption, and attack protection, anti-virus, one or more the relevant parameters in the anti-junk information.

22. communication means as claimed in claim 16, wherein,

In step b, according to the user's who sets in step a rank and parameter, the performance of the user terminal that communicates is carried out the performance of the communication final controlling element of described communication, determines the employed messaging parameter of communication.

23. as each described communication means of claim 16-22, it further comprises:

Steps d, the messaging parameter according to step b determines charges to the communication between the user.