CN1728750B - Method of packet voice communication - Google Patents

Method of packet voice communication Download PDF

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CN1728750B
CN1728750B CN 200410060638 CN200410060638A CN1728750B CN 1728750 B CN1728750 B CN 1728750B CN 200410060638 CN200410060638 CN 200410060638 CN 200410060638 A CN200410060638 A CN 200410060638A CN 1728750 B CN1728750 B CN 1728750B
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邓里文
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Abstract

Using packet switching, the method of packet voice communication can be applicable to united public network in next generation. New layer of data link layer protocol - data link procedure (DLP) is introduced between physical transport network and voice service layer. Using current telephone number as address of voice signal packet i.e. destination address code and source address code of DLP framerealizes forwarding and exchanging voice signal in two layers. Using related signaling implements establishment and expiration of call connection as well as outputs packetized voice signal with certain length periodically. Using DLP carries out signaling information of establishment and expiration of call connection and voice signal packets output periodically. Using safety mechanism, network control management mechanism, flow management mechanism provided by DLP realizes safety management, control management and flow management of network.

Description

A kind of voice over packet method
Technical field
The present invention relates to the communication technology; Be specially a kind of speech communication method that adopts packet switching; More specifically say so a kind of can be with compatible with internet; The two-way mutual communication technology that is used to transmit real-time voice signal that can be used for the employing packet switching of unified public network of future generation; A kind of can be connection-oriented; Also can be towards connectionless voice over packet method, the imagination that the present invention proposes be mainly used in the voice exchange based on packet switching; Various switch router (core router or high-end switch router; The edge perhaps converges switch router; Insert switch router); High/medium/low end Ethernet switch based on packet switch; (english abbreviation is MSTP) to multi-service transport platform; User side integrated access equipment (but incoming voice; Data; The access device of any or several business in the video traffic) and any the interconnect equipment etc. relevant with packet voice.
Background technology
According to interrelated data, existing speech communication method has three kinds, is respectively:
(1)PSTN(PSTN is the english abbreviation of PSTN) phone;
(2) (IP is the english abbreviation) of Internet Protocol to IP phone;
(3)ATM(ATM is the english abbreviation of Asynchronous Transfer Mode, asynchronous transfer mode) the packet voice tranmission techniques.
Wherein pstn telephone refers to the communication means that is used for transmitting voice service in the present telecommunications network; This is a kind of employing time-division multiplex technology and Circuit-switched connection-oriented speech tranmission techniques; This method is to transmit the main method of voice service at present in the world; Its technology is the most ripe; Use the most extensive; History is the most remote; Network size is the hugest; It is that people are for transmitting the custom-designed a kind of network technology of voice service; Its main feature is to adopt connection-oriented technology; Adopt time division multiplexing and circuit-switched technology; In order to realize the communication of both call sides; Between both call sides, set up one through relevant signaling and connect link; For adopting time-multiplexed method, the utilance that improves communication line improves the efficiency of transmission of backbone network circuit; In order to guarantee that the realization conversation between different user connects, and adopts the circuit switching form to realize the exchange of different circuits.Though this method is a kind of technology of relatively optimizing for simple voice service, this technology also has some shortcomings and defective, as:
(1) line efficiency is low.Because it is a connection link of between both call sides, setting up a special use; Have only a side such as user A to have signal to be sent to an other side during actual the conversation and (be assumed to user B); This moment, user B was in idle condition to the circuit between user A, but this circuit still is in seizure condition.Actual in addition test shows; When even user A sends information (speech) to user B; The centre also also has a lot of times to be in no information state, and () does not promptly speak; User A has still taken whole circuit from A to B in these times; This telephone communication mode is like the automobile of running on expressway; If a car is local from certain place to another one; Must keep two tracks to it so; A track of going direction; A track of returning; Even this car in motion before and after circuit and to return the track be that the empty a certain moment of, it only took certain space; Front and back are empty certainly; The track that another one is returned also is empty) also will be for this car keeps the space, track, though this communication mode has service quality to guarantee, efficient obviously be poor efficiency (because front and back all are empty; Can guarantee not can traffic congestion; But one road (track) can only run a car, the obvious poor efficiency of efficient), this poor efficiency communication mode must cause communications cost high.
(2) new business can not be provided.Owing to this traditional voice communication network is merely for transmitting the special technology that voice service designs; On this network, be difficult to open up new business; Along with the development of technology and user continuous enhancing to information requirements; The user hopes can obtain to comprise the various information of speech, data, video and multimedia whenever and wherever possible, can't satisfy this requirement of user to this traditional voice network.
(3) this employing time division multiplexing, circuit switching and connection-oriented speech tranmission techniques can not with unify the public network compatibility future.Generally believe now; Following unified public network will be a kind of network that adopts packet switching; Just why the whole world has stopped adopting the research and development of Circuit-switched telephone network technology for this; Existing telephone network has the complete communication mechanism of a cover; Comprise the telephone number addressing architecture, existing speech transmits network technology can not transit directly to unified public network of future generation.
(4) this speech tranmission techniques is dangerous, can not satisfy the demand of user to the fail safe of signal.Can be like those spiteful people through the phone of on subscriber's line, pegging graft; Get final product careless free call on somebody else's expense through illegal means; Also can at will eavesdrop the content of conversation; The user's communication content also has no safety guarantee; Be easy to eavesdropped; Even conversation content has been eavesdropped, the user also knows nothing, and speech transmits in the way has no safety guarantee.
IP phone is a kind of speech communication method that adopts packet switch that produces along with the high speed development of internet; It is the english abbreviation of VoiceoverIP that IP phone also is VoIP(VoIP; The meaning is for transmitting speech on IP network); This method also has practical application at present in the world; The principle of IP phone is transmitting by IP network (mainly being IPv4) after the voice signal digitlization; Its process is following: at first utilizing voice compression technique after the voice signal digitlization; Then this signal bit (byte) is encapsulated into real time transport protocol (english abbreviation is RTP); Again the Real-time Transport Protocol that has encapsulated voice signal is encapsulated into UDP (english abbreviation is UDP); Again UDP is encapsulated in the information field of IP agreement; In order on various physical networks, to transmit the IP bag that has encapsulated voice service; Also must be again through the encapsulation process of various data link layer protocols, this speech transfer approach also comes with some shortcomings and defective:
(1) the processing level is many, complicated, expense is big, transmission efficiency is low.If the voice signal digitlization; And then adopt voice compression algorithm such as ITU-T G.729 signal to be compressed; Every frame transmits the voice signal of 20 bytes; Then voice signal is encapsulated into the multi-protocols level processing that IPv4 need pass through RTP/UDP/IP; The voice signal of 20 bytes only is encapsulated into data link layer; Reach 47 bytes through above-mentioned encapsulation process overhead byte, expense is up to 47/67=70.1%.If adopt IPv6, expense will be bigger, if the expense of adding data link layer is then bigger, it is more to handle level, and technology is also just more complicated.
(2) there is not service quality to guarantee.Because IP network provides a kind of service of doing one's best; IP network does not have service quality to guarantee; For common data service; Because its real-time is less demanding; IP network has a cover to guarantee to transmit the method for the correctness of data; For example suppose that a user will be sent to an other computer (being assumed to computer second) to a file from a computer (being assumed to the computer first) by FTP (english abbreviation is FTP); Second receives and reconfigures according to the numbering in the IP header behind all IP packets that first sends is a complete file; Reconfiguring when being a complete file; If find mistake to occur then send to receive wrong indication, the indication transmit leg resends.As far as data, resending does not repeatedly have too big relation, but for voice service; Because its real-time requires high, the repeating transmission that the user can not waiting signal not so can confusion reigned; Be that independent process transmits owing to each IP wraps in the network in addition; The IP bag that might the back sends arrives first, back the arriving of sending out earlier, and it doesn't matter to the IP bag for this situation; But the voice business then dying; Word arrives first because this possibly cause the back, arrives behind the first word, and this consequence is well imagined.
(3) owing to IP handles through the routing forwarding of IP address realization IP bag; And common phone utilizes the telephone number connection that realizes conversing; Therefore when utilizing IP to transmit speech, must realize the mapping of telephone number to the IP address; This has increased the processing level on the one hand, and the another one shortcoming is the in short supply of IP address.What present IP network adopted is the i.e. Internet Protocol of the 4th version of IPv4(), IPv4 adopts the address of 32 bits, can have 2 in principle < > 32 <> Promptly can there be tens addresses individual address, but because IPv4 is divided into the IP address 5 types of addresses such as A, B, C, D, E, actual available IP address much less, this makes the IP address very nervous.If use IPv6; Can change the situation of IPv4 address shortage; But IPv6 and IPv4 are incompatible; Adopt IPv6 like this or all; But a huge network has been built in the whole world aspect IPv4 now; Though have tunnel protocol can realize the transmission of IPv6 on the IPv4 network, the in fact most IPv4 network equipment is not supported this function, therefore at present IPv6 and the IPv4 intercommunication of having no idea.
(4) lack security mechanism.As everyone knows; Existing IP network has no safety, and IP bag itself can be modified, its content can be stolen, duplicates, change, if the content need to be keep secret of user's communication like this; Existing IP network can not meet the demands, and user's information has no safety.If user's communication speech need to be keep secret; Can only adopt IPsec(IPsec is that the internet engineering task group IETF(IETF of Internet Standard mechanism is the standards body of internet; Be the english abbreviation of internet engineering task group) a kind of IP security mechanism) of formulating; Increased expense so on the one hand more; On the one hand increased the processing level in addition, and carried out encryption itself and need the time possibly cause being difficult to more satisfy the real-time requirement of voice service.
(5) present networks does not have the network protection switch function; 50 milliseconds of switch functions particularly; This function voice is professional to be absolutely necessary; In case switch and refer to network and break down for 50 milliseconds; Break down like circuit or equipment; Require so in 50 milliseconds time, the circuit of conversation to be switched on the in addition normal circuit from faulty line; If in 50 milliseconds of times, realized this function; The interruption of the imperceptible conversation of user; Because what IP adopted is the 3rd layer of exchange; In several seconds, this obviously can not meet the demands the switching time of IP network at the soonest at present.
(6) (one type is Interior Gateway Protocol to two types of Routing Protocols of present networks employing; Other one type for Exterior Gateway Protocol) realize that the forwarding of IP bag handles; Rely on existing Routing Protocol to realize that the forwarding of IP bag does not have the traffic engineering ability; Even this possibly cause having between two nodes many and connect the transmission that link can be realized packet; But router relies on Routing Protocol all to be forwarded to the IP bag on the link; Thereby it is congested to cause this link to produce; And this moment, other link was in idle condition, caused losing of voice signal thereby produce packet loss.
(7) existing telephone network has the complete communication plan of a cover; Built up a whole network system through 100 years of development; If traditional telephone network is added on the IP network simply; Whole technique implements ten minutes complicated so; And actual proof; Because IP network does not have service quality to guarantee; The telephone network that on IP network, superposes simply realizes that it is infeasible that the grouping of voice service transmits; This load mode does not have service quality to guarantee; Fact proved, only rely on existing IP technical deficiency to construct unified carrier class common network of future generation.
Adopt ATM to transmit the method for speech as for the third; It is a kind of speech tranmission techniques of atm forum design; It advocates voice service is transmitted by atm technology; Method is at first by ATM Adaptation Layer (ATM first kind adaptation layer protocol, second type of adaptation layer protocol of ATM); And then by ATM layer transmission speech; ITU-T also supports ATM; But because ATM is a kind of technology of a kind of technology driving rather than market-driven; Be a kind ofly can unify all professional a kind of technology that promptly are referred to as integrated digital network and design in order to design; Initial this technology imagination all adopts ATM to realize the transmission that all are professional from the user terminal to the core network, is called ATM Adaptation Layer (english abbreviation is AAL) by interpolation one deck on the ATM layer and realizes the adaptive of all business.ATM adopts packet design, and each ATM frame length is 53 bytes, and wherein the ATM header is 5 bytes, and payload is 48 bytes like this.Because the design and the market demand of ATM seriously disconnect; Add and its technology imagine too perfection to cause technology to implement very complicated; Delay to realize standardization; Thereby delay large-scale application; Add surfed the Internet since the nineties in last century flourish; Key factor who whether supports technique of internet to become to weigh a kind of communication technology whether to have vitality will develop must support internet service; Yet; Because the internet is a kind of elongated Packet Service, and ATM is a kind of fixed length packet technology, ATM expense all too when transmitting IP operation is big; Unexpectedly reach about 25%, efficiency of transmission is extremely low.The main flow that progressively becomes future network along with IP operation is professional; Add owing to atm device costliness, technical sophistication, can not support the speed that 10Gbps is above; ATM progressively becomes a kind of superseded technology like this; Therefore utilize ATM to transmit voice service and never obtain large-scale application; The target of unifying whole network with ATM is impossible, realizes that with ATM the transmission of packet voice also just becomes a kind of technology that can not use.Atm technology itself is tending towards superseded now, and some correct ideas that is this technology can exist in unified from now on public network.
< > Summary of the invention <>
The objective of the invention is deficiency to existing Speech Communication technology; A kind of speech communication method that can be used for unified carrier class public network of future generation is proposed; This speech communication method adopts packet-switch technology; Adopt connection-oriented or towards connectionless communication mode; Can satisfy the real-time in the voice service; The requirement of interactivity; Simultaneously also can be compatible with IP network; Coexistence; Not only can be used for existing various wireline communication network (fixed telephone network; Ethernet; PDH (Pseudo-synchronous Digital Hierarchy) (PDH); SDH (Synchronous Digital Hierarchy) (SDH); Wavelength division multiplexing (WDM); Optical transfer network (OTN); Two-way cable television network etc.) can also be used to comprise that (english abbreviation is SM) to gsm; Various CDMA(code division multiple accesss) in interior mobile communication; Personal Handyphone System (PHS); WLAN (wireless local area network) (english abbreviation is WLAN) and wireless MAN (IEEE 802.16); Cordless communication network such as satellite communication and any other wired or wireless physics tranmission techniques of exploitation in the future make existing voice communication networks be smoothly transitted into carrier class public network of future generation.
The objective of the invention is to reach: by defining a novel data link layer protocol by following measure --- data link rules (english abbreviation is DLP); Utilize this novel data link layer protocol to realize the packetizing of voice service on the one hand; Realize the adaptive of packet voice business and various physical facility; Thereby realize the transmission of packet voice business on various physical facility; Utilize this agreement to realize the adaptive of internet and various Physical layer facilities on the other hand; And packet video business and various Physical layer facilities is adaptive; Thereby realize the integration of three networks of existing telephone network, data (IP) communication network and video (TV) network; In the unified whole communication network of data link layer; Make existing telephone network, data communication network and video network be smoothly transitted into unified carrier class common network of future generation; Voice service is as just the part of the upper-layer service of this new types of data link layer protocol (DLP) carrying; The voice service layer is handled as the client layer signal of this new types of data link layer protocol (DLP); Realize the directly adaptive of voice service layer and various Physical layer facilities with this new types of data link layer protocol (DLP); The communicating by letter of data link layer and voice service interlayer, Physical layer realize by primitive with communicating by letter of data link interlayer; When needing conversation; At first utilize relevant implementing signalling both call sides to call out establishment of connection; Periodically export the voice signal of certain-length in the communication process; The calling that comes the finished call both sides to set up with signaling during end of conversation connects; The termination that call out to connect can be initiated by either party of both call sides; The packet voice signal that produces in the signaling information of calling out connection foundation and stopping producing, the communication process all transmits by this new types of data link layer protocol; Utilize destination address and the source address of the existing telephone number of both call sides as speech packet; Two layers of exchange that realize voice signal as the destination address sign indicating number and the source address sign indicating number of this new types of data link layer protocol frame (DLP frame) with the telephone number of both call sides; The security mechanism of utilizing this new types of data link layer protocol to provide guarantees that the safety of packet voice business in the network transport process transmits; Send miscellaneous service data with the Frame that defines in the described new types of data link layer protocol from the upper strata; The control frame of definition realize network comprise that Topology Discovery, 2 layers of protection are switched, the network control management of fault management, configuration management and performance management etc., the traffic management frame of definition is realized the traffic engineering management of network.
According to method provided by the invention; It is characterized in that; Through defining a novel data link layer protocol---data link rules (english abbreviation is DLP) realize existing telephone network; The integration of three networks of data communication network and video (TV) network; In the unified whole communication network of data link layer; Make existing telephone network; Data communication network and video network are smoothly transitted into unified carrier class public network of future generation; Voice service is as just the part of the upper-layer service of this new types of data link layer protocol carrying; The packet voice Business Processing is divided into three protocol hierarchies; Be followed successively by physical layer from top to bottom; Data link layer and voice service layer; Wherein physical layer is to comprise that wired and wireless various physics existing or exploitation in the future transmits link; Data link layer is mainly new types of data link layer protocol---the data link rules (DLP) of the present invention's definition; The voice service layer is handled as the client layer signal of this new types of data link layer protocol; Realize the directly adaptive of voice service layer and various physical layer facilities with this new types of data link layer protocol; The service that data link layer provides for the packet voice operation layer is adopted and is not confirmed formula information transfer service pattern; The data of sending are not done any affirmation formula operation; Data link layer is passed through " data link-data-request (the English DL_DATA.request of being) " for the service that the voice service layer provides; " data link-data-indication (English is DL_DATA.indication) "; " data link-control-request (English is DL_CONTROL.request) "; 4 primitive such as " data link-control-indication (English are DL_CONTROL.indication) " are realized; Physical layer is that two primitive are passed through in the service that data link layer (DLP) provides: " physical link-data-request (the English PL_DATA.request of being) "; " physical link-data-indication (English is PL_DATA.indication) " realizes; At transmitting terminal; When the voice service layer has data to send; Call DL_DATA.request(data link-data-request) primitive; This primitive comprises series of parameters; These parameters are used for confirming the value of described new types of data link layer protocol (DLP) frame each field of header and payload field; At receiving terminal; The entity activates DL_DATA.indication primitive when the DLP client entity will receive data; The value of the accepting state of this primitive indication incoming frame and each field of input DLP frame; If the speech layer needs DLP that network control function is provided; Call data link control primitive; Control primitive has two: one is " data link-control-request (DL_CONTROL.request) " primitive; One is " data link-control-indication (DL_CONTROL.indication) " primitive; These two primitive comprise series of operation sign indicating number and parameter; Through these two primitive network control function can be provided; Protection is switched like discovering network topology layer; Configuration management; Fault management; Performance management etc.; At transmitting terminal; Need when sending to physical entity, data link layer activate PL_DATA.request primitive by as data; Will be when physical entity sends DLP at receiving terminal as data; Activate PL_DATA.indication primitive, each primitive semantic as follows:
(1)DL_DATA.request(
DestinationAddressCode，
SourceAddressCode，
DLPServiceData，
FrameLength，
ServiceType，
NetworkTopology，
Security，
FrameSequenceNumber，
SPI)
DL_DATA.request primitive contains 9 parameters; The connotation of each parameter is respectively: DestinationAddressCode representes the destination address sign indicating number; This parameter is confirmed the destination address of DLP frame according to conversation one side's telephone number; With generating the destination address code word segment value that sends in the DLP frame header; SourceAddressCode representes the source address sign indicating number; This parameter is used for confirming DLP frame source address according to conversation one side's telephone number; With generating the source address code word segment value that sends in the DLP frame header; The client signal that DLPServiceData indicates to send is whole voice packets (grouping); Send payload word segment value in the DLP frame with generating; The total length of the definite DLP frame that will send of FrameLength parameter; The type of service that ServiceType parameter indication DLP client layer sends; It sends business type field value in the DLP frame header with generating; The Security parameter indicate whether to the DLP client signal encrypt, authentication processing; The DLP entity confirms to send the security word segment value in the DLP frame header with it; The indication of FrameSequenceNumber parameter will be sent the number of frames (FSN) of frame; The DLP entity confirms to send the FSN field value in the DLP frame header with it; The network topology of NetworkTopology parameter indication DLP node; The DLP entity sends topological field value in the DLP frame header with it; SPI(SPI is the english abbreviation of Security Parameter Index) parameter is an option; The security association that is used for confirming that if the voice signal is encrypted, sets up at the communication two ends during authentication processing; Be used for confirming Security Parameter Index (SPI) field value in the DLP frame
(2)DL_DATA.indication(
DestinationAddressCode，
SourceAddressCode，
DLPServiceData，
ServiceType，
FrameLength，
ReceptionStatus，
NetworkTopology，
Security，
FrameSequenceNumber，
SPI)
The DL_DATDA.indication primitive parameter semantic as follows: DestinationAddressCode representes the destination address sign indicating number; This parameter is confirmed the destination address code word segment value in the input DLP frame header; SourceAddressCode representes the source address sign indicating number; This parameter is confirmed the source address code word segment value in the input DLP frame header; DLPServiceData confirms input DLP frame payload word segment value; The accepting state of ReceptionStatus indication incoming frame; If the FCS(Frame Check Sequence of incoming frame) field does not make a mistake; The value of ReceptionStatus is FCS_ERROR_FREE; Otherwise; If incoming frame makes a mistake; Then the ReceptionStatus value is FCS_ERROR; The business type field value of ServiceType parameter indication input DLP frame; The FrameLength parameter is confirmed the total length of input DLP frame; Whether Security parameter indication input DLP frame has carried out encryption, authentication processing; The Security field value of its indication input DLP frame; The FrameSequenceNumber parameter is indicated the FSN of described incoming frame; Topological field value in the NetworkTopology parameter indication input DLP frame; The SPI parameter is used to refer to the Security Parameter Index field value of said incoming frame
(3) data link-control-request (DL_CONTROL.request) primitive
Data link-control-request (DL_CONTROL.request) form of primitive is the DL_CONTROL.request(command code; Solicit operation ordered series of numbers table); Wherein command code comprises Topology Discovery request (the English TOPOLOGY_DISCOVERY_REQ of being) layer protection switching request (the English L2PS_REQ) of being; (English is CONFIGURATION_REQ) to configuring request; (English is FAULT_INQUIRY_REQ) in the fault inquiry request; Performance queries request (English is PERFORMANCE_INQUIRY_REQ) etc.; The concrete operations ordered series of numbers table of each command code is following: Topology Discovery request (TOPOLOGY_DISCOVERY_REQ) the solicit operation number of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 layer protections such as Topology Discovery claim frame payload data switching request (L2PS_REQ) the solicit operation number of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; 5 of number of frames layer protection switching request frame payload datas etc.; Configuring request (CONFIGURATION_REQ) the solicit operation number of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 of configuring request frame payload datas etc.; Fault inquiry request (FAULT_INQUIRY_REQ) the solicit operation number of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 of fault inquiry claim frame payload datas etc.; Performance queries request (PERFORMANCE_INQUIRY_REQ) the solicit operation number of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 of performance queries claim frame payload datas etc.; Destination address sign indicating number in each operand; The source address sign indicating number; Type of service; The isoparametric implication of number of frames is the same with data link-data-request primitive corresponding parameters implication
(4) data link-control-indication (DL_CONTROL.indication)
Data link-control-indication (DL_CONTROL.indication) form of primitive is the DL_CONTROL.indication(command code; Indication operand tabulation); Wherein command code comprises that Topology Discovery response indication (English be TOPOLOGY_DISCOVERY_RESPONSE_IND) layer protection switch the response indication and (Englishly be L2PS_RESPONSE_IND); (English is CONFIGURATION_RESPONSE_IND) in the configuration response indication; (English is FAULT_INQUIRY_RESPONSE_IND) in fault inquiry response indication; Performance queries response indication (English is PERFORMANCE_INQUIRY_RESPONSE_IND) etc.; The concrete operations ordered series of numbers table of each command code is following: Topology Discovery response indication (TOPOLOGY_DISCOVERY_RESPONSE_IND) the indication operand of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Response indication (L2PS_RESPONSE_IND is switched in the protection of 5 layers such as Topology Discovery response frame payload data) the indication operand of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; 5 of response frame payload datas etc. are switched in number of frames layer protection; Configuration response indication (CONFIGURATION_RESPONSE_IND) the indication operand of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 of configuration response frame payload datas etc.; Fault inquiry response indication (FAULT_INQUIRY_RESPONSE_IND) the indication operand of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 of fault inquiry response frame payload datas etc.; Performance queries response indication (PERFORMANCE_INQUIRY_RESPONSE_IND) the indication operand of command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; 5 of performance queries response frame payload datas etc.; Destination address sign indicating number in each operand; The source address sign indicating number; Type of service; The isoparametric implication of number of frames is the same with data link-data-indication corresponding parameters implication
(5) physical link _ request of data (PL_DATA.request)
PL_DATA.request(Userdata), this primitive has only a parameter, and this parameter is a user data, and English is Userdata,
(6) physical link _ data indication (PL_DATA.indication)
PL_DATA.indication(Userdata), this primitive has only a parameter, and this parameter is a user data, and English is Userdata.
According to method provided by the invention; It is characterized in that; Can on any physical layer of existing various physical links and exploitation in the future, directly transmit speech packet; Physical layer can be any wired or radio physical link in the existing communication network; These physical links comprise ITU-TG.702 definition whole speed ranges PDH definition from the Lower Order Virtual Container to the higher order virtual container and the wavelength division multiplexing (english abbreviation is WDM) of whole wavelength speed of SDH of whole speed ranges of Synchronous Transfer Mode series definition and optical transfer network (english abbreviation is that the Ethernet of whole speed ranges of OTN) 02.3 definition (comprises the 10G Ethernet) that gigabit Ethernet of Fast Ethernet definition of the Ethernet definition of IEEE802.3 definition defines; (english abbreviation is xDSL) to various Digital Subscriber Line; Comprise the GSM(gsm) and various CDMA(code division multiple access) the private wireless network of various WLAN (wireless local area network) (english abbreviation is WLAN) link 802.15 definition of various mobile communication link 802.11 definition, the various wireless MAN links of IEEE802.16 definition.
According to method provided by the invention; It is characterized in that defining that a novel data link layer protocol --- data link rules (DLP) realize the integration of three networks of speech, data (IP) and video; It is that certain specific coding relation (constituting certain encoding relation) that relies on this protocol frame to begin the bit information formation in the certain-length most realizes that the frame of this new types of data link layer protocol frame is delimited; (English is FrameLength to frame length of definition in this new types of data link layer protocol frame; FL) field is used for the total length with this protocol frame of byte form sign; (English is FrameLengthCheck to define a frame length verification; FLC) field is used for frame length field is carried out verification and carried out single-bit or 2 bit mistake correction process; This particular verified encoding relation that utilizes these two field bit to constitute is simultaneously realized the frame demarcation of this data link layer protocol frame (DLP frame); (English is ServiceType to define a type of service; ST) thus field is used for identifying the type of service of payload field encapsulation realizes multiple services encapsulation; The regulation different business types has different priority simultaneously; (English is NetworksTopology to define a topological field; NT) come the topological classification of marked network node; Define a safety (English for Security) field whether be used for identifying to the payload of encapsulation encrypt, authentication processing, (DestinationAddressCode is DAC) with source address sign indicating number (SourceAddressCode for the destination address sign indicating number of a classification of definition; SAC) identify the two layers of destination address and the source address of encapsulation business data packet; (English is ExtensionHeader, EH) identifies and whether payload is carried out extension process, defines one and fills length field and be used for representing to fill if desired the length of handling as filling when payload carried out authentication, encryption with the byte form to define an extension header; (English is FrameSequenceNumber to define a number of frames; FSN) field is used for identifying the transmission sequence of this data link layer protocol frame (DLP frame), and (English is SecurityParameterIndex, SPI) identifies the security association that the communication two ends were set up when upper layer data carried out authentication, encryption to define a Security Parameter Index; Define a payload (the English Payload of being) field and encapsulate miscellaneous service from the upper strata; (English is FrameCheckSequence, and FCS) field comes described data link layer protocol frame is carried out verification, and one type of Frame of definition sends the miscellaneous service data from the upper strata in described new types of data link layer protocol frame to define a Frame Check Sequence; Definition traffic management frame is realized the traffic engineering management of network; The definition control frame realize network comprise that Topology Discovery, 2 layers of protection are switched, the network control management of fault management, configuration management and performance management etc., these three kinds of dissimilar frames are identified by the type field in the described new types of data link layer protocol frame, and are specific as follows: definition frame length (english abbreviation is FL) field length is 16 bits; Definition frame length check field (english abbreviation is FLC) length is 15 bits; Make FL and FLC field bit constitute BCH(31,16) sign indicating number (BCH is the english abbreviation of BCH Bose-Chadhuri-Hocquengham's sign indicating number), the DLP frame utilizes this relation to realize the frame demarcation of DLP frame; BCH(31; 16) Ma generator polynomial is G(x)=x <sup > 15 </sup>+x <sup > 11 </sup>+x <sup > 10 </sup>+x <sup > 9 </sup>+x <sup > 8 </sup>+x <sup > 7 </sup>+x <sup > 5 </sup>+x <sup > 3 </sup>+x <sup > 2 </sup>+x+1, initialization value is 0, here the corresponding highest significant position (english abbreviation is MSB) of x <sup > 15 </sup>; The corresponding least significant bit (english abbreviation is LSB) of x <sup > 0 </sup>; The particular kind of relationship that the DLP frame utilizes DLP frame (FL field and FLC field) front 31 bits to constitute is realized the demarcation of DLP frame, and DLP frame demarcation process realizes that according to finite state machine finite state machine comprises three states such as search (the English HUNT of being) attitude, presynchronization (English is PRESYNC) attitude, synchronous (the English SYNC of being) attitude; The finite state machine workflow diagram is following: (1) is in the search attitude; DLP handles 31 bits that receive is pursued FL and the FLC relation that correct format is sought in the bit search, and in this state, BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions; In case in 31 bits that receive, find correct candidate FL and FLC matching relationship value; Can suppose and confirm a correct DLP frame that receive and handle entering presynchronization (English is PRESYNC) state, (2) are in the PRESYNC attitude; DLP handles by handling by frame search and realizes the demarcation of DLP frame; According to FL and the FLC correct match value that a last step is found by the bit search, can suppose to search a correct DLP frame, can confirm the FL and the FLC field value of next frame then according to each field relation of this frame; And confirm according to their relation whether they mate; And then next frame, in case confirm that continuously DELTA(DELTA is a parameter, it be one greater than 0 positive integer) individual correct DLP frame; DLP receives to handle and gets into synchronous state; Otherwise,, get into the search attitude if the FL of a frame and FLC field value do not match subsequently; At this moment; BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions, gets into synchronous state from the search attitude and need search DELTA+1 correct DLP frame continuously, and (3) are at synchronous state; DLP handles the beginning that can confirm next DLP frame by the FL of a frame and FLC field relation; Can realize the parsing of a frame one frame then, FLC has single-bit error or 2 bit mistake error corrections in this state, if a plurality of bits (surpassing 2 bit mistakes) mistake takes place; Then frame is delimited and was lost efficacy; Framing is handled to get into and is searched for attitude, and sends client server Signal Fail (english abbreviation is SSF) indication for client's adaptation processing, and (4) empty DLP frame is participated in frame and delimited processing; And abandon the sky frame subsequently; The robustness that the demarcation of DLP frame is handled is relevant with the DELTA value, and the present invention advises that the DELTA value is 1, and the reserved field that length of definition is 1 bit behind FLC gives over to and uses (being set to 0) in the future always; Definition business type field length is 8 bits; Can discern 2 <sup altogether > 8 </sup>=256 kind of type of service, wherein highest significant position is that represented in 0 o'clock to encapsulate is the general data professional (like common IP data service) of low priority, highest significant position is to represent that the business of DLP payload field encapsulation was the real time business (like phone, real-time video traffic) of high priority at 1 o'clock; The priority of DLP Business Processing order from high to low is followed successively by: control frame ＞ traffic management frame ＞ real time business (speech, video or other real time business in real time) ＞ data service (IPv4/IPv6); The business of high priority is at first handled in the formation of DLP network processes, and the usage of business type field is as shown in table 1
The usage of table 1. business type field
The binary value of business type field Usage
00000000～00000011 Keep
00000100 IP v4 data
00000101 Move IP v4 data
00000110 IP v6 data
00000111 Move IP v6 data
00001000～00111111 Keep and give other data, services
01000000 The 10Mbps Ethernet
01000001 The 100Mbps Ethernet
01000010 The 10/100Mbps Ethernet
01000011 Gigabit Ethernet
01000100～01111111 Keep
10000001 Control frame
10000010 The traffic management frame
10000011 Real-time fixedly local call (local telephone) business
10000100 Fixedly National calls is professional in real time
10000101 Fixedly international long-distance telephone is professional in real time
10000110 In real time fixing local video telephone (local telephone) business
10000111 Real-time fixedly national distance visual telephone service
10001000 Real-time fixedly international long-distance visual telephone service
10001001 Landline telephone is called out local (local telephone) business that moves in real time
10001010 Landline telephone is called out the National calls business that moves in real time
10001011 Landline telephone is called out the international long-distance telecommunications service that moves in real time
10001100 Landline telephone is called out local mobile video telephone business in real time
10001101 Landline telephone is called out and is moved the national distance visual telephone service in real time
10001110 Landline telephone is called out the international long-distance visual telephone service that moves in real time
10001111 Move domestic voice service in real time
10010000 Move international voice service in real time
10010001 Move domestic visual voice service in real time
10010010 Move international visual voice service in real time
10010011 Real-time video traffic (broadcast type TV)
10010100 Real-time video traffic (unicast type TV)
10010101 Real time business based on IP v4
10010110 Real time business based on IP v6
10010111 Real time business based on mobile IPv 4
10011000 Real time business based on mobile IP v 6
10011001 G.702 PDH circuit emulation service: asynchronous circuit 1544 kilobits/second
10011010 G.702 PDH circuit emulation service: asynchronous circuit 2048 kilobits/second
10011011 G.702 PDH circuit emulation service: asynchronous circuit 6312 kilobits/second
10011100 G.702 PDH circuit emulation service: asynchronous circuit 8448 kilobits/second
10011101 G.702 PDH circuit emulation service: asynchronous circuit 4368 kilobits/second
10011110 G.702 PDH circuit emulation service: asynchronous circuit 4736 kilobits/second
10011111 G.702 PDH circuit emulation service: synchronous circuit 1544 kilobits/second
10100000 G.702 PDH circuit emulation service: synchronous circuit 2048 kilobits/second
10100001 G.702 PDH circuit emulation service: synchronous circuit 6312 kilobits/second
10100010 G.702 PDH circuit emulation service: synchronous circuit 8448 kilobits/second
10100011 G.702 PDH circuit emulation service: synchronous circuit 4368 kilobits/second
10100100 G.702 PDH circuit emulation service: synchronous circuit 4736 kilobits/second
10100101 G.702 PDH circuit emulation service :139264 kilobits/second
10100111 G.707 SDH circuit emulation service: C-11,1648 kilobits/second
10101000 G.707 SDH circuit emulation service: C-12,2224 kilobits/second
10101001 G.707 SDH circuit emulation service :C-2,6832 kilobits/second
10101010 G.707 SDH circuit emulation service :C-3,8384 kilobits per seconds
10101011 G.707 SDH circuit emulation service :C-4,149760 kilobits per seconds
10101100 G.707 SDH circuit emulation service :VC-11,1664 kilobits per seconds
10101101 G.707 SDH circuit emulation service :VC-12,2240 kilobits/second
10101110 G.707 SDH circuit emulation service: VC-2,6848 kilobits/second
10101111 G.707 SDH circuit emulation service: VC-3,48960 kilobits/second
10110000 G.707 SDH circuit emulation service: VC-4,150336 kilobits/second
10110001 G.707 SDH circuit emulation service :TU-11,1728 kilobits per seconds
10110010 G.707 SDH circuit emulation service :TU-12,2304 kilobits per seconds
10110011 G.707 SDH circuit emulation service: TU-2,6912 kilobits per seconds
10110100 G.707 SDH circuit emulation service: TU-3,9152 kilobits per seconds
10110101 G.707 SDH circuit emulation service: AU-3,50304 kilobits per seconds
10110110 G.707 SDH circuit emulation service: AU-4,150912 kilobits per seconds
10110111 G.707 SDH circuit emulation service :STM-0,1480 kilobits/second
10111001 G.707 SDH circuit emulation service :STM-1/OC-3c, 155520 kilobits/second
10111010 G.707 SDH circuit emulation service :STM-4OC-12c, 600080 kilobits/second
10111011 G.707 SDH circuit emulation service :STM-16, /OC-48c 2488320 kilobits/second
10111100 DVB, MPEG-1 transmits bit stream
10111101 DVB, MPEG-2 transmits bit stream
10111110 DVB, MPEG-4 transmits bit stream
10111111～11111111 Keep and give other real time business
Defining topological field length is 4 bits; Wherein binary value " 0001 " is represented bus structures; Binary value " 0010 " expression star structure; Binary value " 0011 " expression tree topology; Binary value " 0100 " expression ring topology; Binary value " 0101 " expression grid (Mesh) topological structure; Other value keeps to give in the future to be used; For ring topology and network topology; The present invention provides 50 milliseconds of protection switch functions; Definition secure fields length is 4 bits; Wherein binary value " 0000 " expression is not carried out any encryption to upper-layer service; Authentication processing; Binary value is represented carry out encryption from the business datum on upper strata for " 0001 "; Binary value " 0010 " expression is carried out authentication processing to the business datum from the upper strata; Binary value " 0100 " expression is to encrypting and authentication processing from the business datum on upper strata; Other value keeps in the future to be used; Definition destination address code length is 64 bits; Definition source address code field length is 64 bits; The destination address sign indicating number adopts identical hierarchy with the source address sign indicating number; All (English is Country Code by national code; CC); (English is National Region Code) to domestic area code; (English is Node Area Code to station code; NAC) and personal code work (English is User Code; UC)4 field formed; Each field length is 16 bits; Wherein national code is represented the first order forwarding label of upper-layer service; Domestic area code is represented the second level forwarding label of upper-layer service; Station code is represented the third level forwarding label of upper-layer service; Personal code work is represented the fourth stage forwarding label of upper-layer service; Definition header field length is 8 bits; Wherein binary value does not have extension header for " 00000000 " expression; Other value keeps in the future to be used; It is 8 bits that length field length is filled in definition; Be used for identifying the length that the DLP payload field is filled with the byte form; Definition frame sequence-number field length is 16 bits; Be used for the Speech frame that sends is carried out sequence mark; This field value carries out sequence mark since 0 to the packet voice that sends; Up to maximum,, send the value that processor is removed register if FSN reaches maximum; And count again since 0; Can transmit according to correct order to guarantee packet voice; Send; Receive and handle, FSN also can provide anti-playback simultaneously, and definition Security Parameter Index field length is 16 bits; This field is optional; Its value is arbitrarily, and be used in combination the security association that identifies this DLP frame uniquely (English is Security Association, SA) with the destination address sign indicating number; Wherein the SPI value is that 0 reservation is given local; Specific implementation is used; Metric 1～255 is the english abbreviation of Internet AssignedNumbers Authority by IANA(IANA) keep to give in the future and use, other value is confirmed according to the encrypting and authenticating algorithm that adopts that by communicating pair defining payload field length is 0～5535 byte; Send the cycle with voice compression algorithm and whether the encrypting and authenticating processing is relevant for the speech of its length of voice service and employing; Definition padding data (this field is optional) field length is 0～255 byte, and occurrence is relevant with the cryptographic algorithm of employing, and its value is confirmed by the encrypting and authenticating algorithm; Define the verify data that an authentication data field (this field is optional) generates when depositing authentication processing; Its value is relevant with the identifying algorithm that adopts, and its value is confirmed (generation), definition frame verification sequence (Frame CheckSequence by concrete identifying algorithm; FCS) field length is 32 bits; Be used for to data link layer protocol frame (DLP frame) in the payload of part header fields content and encapsulation carry out verification, FCS verification scope comprises: first bit of business type field begins from the DLP frame, until the ending of DLP frame; Specifically comprise business type field; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Extension header; Fill length field; Number of frames; Security Parameter Index is (if there is); Payload; Padding data is (if there is); Field bit streams such as verify data (if there is) carry out checking treatment, and checking algorithm adopts the CRC-32 of 802.32002 editions definition of IEEE: generator polynomial is G(x)=x < > 32 <> +x < > 26 <> +x < > 26 <> +x < > 23 <> +x < > 22 <> +x < > 16 <> +x < > 12 <> +x < > 11 <> +x < > 10 <> +x < > 8 <> +x < > 7 <> +x < > 5 <> +x < > 4 <> +x < > 2 <> +x < > 1 <> +1, here, x < > 32 <> Corresponding MSB position, and x < > 0 <> Corresponding LSB position if the FCS mistake takes place the DLP frame, abandons the DLP frame that makes a mistake, if some field value can not be discerned; The FCS mistake perhaps occurs, then think invalid data link layer protocol frame, invalid frame will be dropped; Do not notify transmit leg, also do not produce any action, invalid frame comprises:
(1) FCS mistake (FCS takes place and does not match in received frame) the DLP frame
(2) received frame length is less than the frame of 30 bytes
(3) frame that can not discern of business type field
(4) frame that can not discern of other field of header
If the upper strata does not have business datum to need to send; Need fill processing in the traffic frame gap; Promptly send empty frame; The purpose of sending empty frame is in order to regulate two internodal speed; Empty frame sends to its adjacent nearest node from a node; Neighbor node is not forwarded to any other place to it after receiving the sky frame; Directly it is abandoned; Do not notify transmit leg yet; The content of the empty frame of filling that sends at frame gap comprises that frame length field, frame length check field, length are reserved field (always being set to 0) and the source address sign indicating number (including only station code and personal code work field 4 bytes altogether in the source address sign indicating number) of 1 bit; At transmitting terminal; Must carry out scrambler to the synchronous payload encapsulation (SPE) that the DLP frame that has encapsulated voice service is encapsulated among various physical layer frame payload field such as the SDH before; Before any processing of receiving terminal, at first carry out descrambling code to described new types of data link layer protocol frame; Could be for further processing to described new types of data link layer protocol (DLP) frame behind the descrambling code; Scrambler and descrambling code adopt motor synchronizing scrambler/descrambler, and its generator polynomial is G(X)=X 43 +1.
According to method provided by the invention; It is characterized in that; Comprise a destination address sign indicating number (the English Destination Address Code of being in the described new types of data link layer protocol; DAC) and source address (English is Source Address Code; SAC) code field; For IP data service (IPv4/IPv6); Destination address sign indicating number in the described data link layer protocol and source address sign indicating number are represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address respectively; Replace the forwarding and the exchange of three layers of IP address realization IP bag as two layers data-link layer address with the forwarding equivalence class of IP bag; Professional for packet voice; The destination address sign indicating number of described new types of data link layer protocol and source address sign indicating number are represented interim identity card (the number) of expression user identity of telephone number or the appointment of network authentication center of both call sides respectively; With the interim identity card of representing user identity (number) of existing telephone number or the appointment of network authentication center address as speech packet; The telephone number that promptly utilizes both call sides is as data link layer protocol frame (DLP frame) the two layers of exchange realizing voice signal of destination address sign indicating number in the header and source address sign indicating number; For the calling party; Callee's telephone number is the destination address sign indicating number of described new types of data link layer protocol frame; Calling party's telephone number is the source address sign indicating number; For the callee; The destination address sign indicating number is a calling telephone number; The source address sign indicating number is callee's oneself a telephone number; Destination address sign indicating number and source address sign indicating number can be exactly the true telephone number of both call sides; Also can be network management center (perhaps network management AUC) after according to one of the telephone number appointment interim number be interim identity card through user's identification authentication; In the communication subsequently with the temporary number of network management center appointment as packet voice signal (DLP frame) destination address sign indicating number and source address sign indicating number; Thereby raising security performance; The destination address sign indicating number adopts identical structure with the source address sign indicating number; Adopt the complete number system of itu standard in E.164; (English is CountryCode by national code for complete destination address sign indicating number and source address sign indicating number; CC); (English is National Region Code) to domestic area code; (English is Node Area Code to station code; NAC) and four of personal code works (English is User Code) part form; The present invention defines the destination address sign indicating number and source address code field length is 64 bit (8 eight hytes), wherein the national code field length is 16 bit (2 eight hytes), be used for identifying perhaps certain service code of specific geographic area of some countries; CC is the first order forwarding label of described new types of data link layer protocol (DLP) frame; Can there be one or more service code country or geographic area, like the voice service code; The video traffic code; IP operation code (IP v4 service code or IP v6 service code), the concrete national code value of related service is specified by relevant international standard mechanism such as ITU; The professional national code of packet voice that proposes for the present invention can be exactly the international area code in the existing telephone coding system; Domestic area code field length is 16 bits, certain regional service code in the indication a state, and NRC is the second level forwarding label of described new types of data link layer protocol frame; Concrete NRC value is distributed by the communication highest administration mechanism of this state; For the fixed telephone network that adopts packet voice technology, this value is exactly the national distance area code in the present phone number system, is mobile network number for this field value of mobile communication system that adopts the packet voice tranmission techniques; The station code field is 16 bits; Identify the service code of certain network node, this yard is the third level forwarding label of described new types of data link layer protocol frame, and occurrence is specified by Virtual network operator or Internet service provider; This is worth and is the network node code () of end office (EO) for the landline telephone that adopts the packet voice tranmission techniques; For the mobile communication system that adopts the packet voice tranmission techniques this to be worth be ground area code (being equivalent to the national distance area area code in the landline telephone), the personal code work field length is 16 bits, indicates certain user's service code; This yard is the fourth stage forwarding label of described new types of data link layer protocol frame; Concrete UC value is specified by Virtual network operator or Internet service provider, and this field value is that landline telephone or its value of mobile phone all are the numbers of the last a few bit-identify particular users in the present telephone number, in order to reduce the expense of packet voice signal packets (bag) header; Can be divided into local telephone network to voice service; National distance and international long-distance; Difference according to physical circuit also can be divided into wired (landline telephone) and wireless (mobile communication), and concrete voice service type is confirmed by the business type field value of described new types of data link layer protocol frame, during the described new types of data link layer protocol of forwarded (DLP) frame; At first search the business type field in described new types of data link layer protocol (DLP) frame; Confirming professional priority through concrete type of service, is the national code in the destination address sign indicating number of searching in described new types of data link layer protocol (DLP) frame then; Next is domestic area code; Being station code once more, is personal code work at last; In case a certain item code of finding described new types of data link layer protocol (DLP) frame is different with local node; Network node is no longer handled DAC back field in described new types of data link layer protocol (DLP) frame, directly is forwarded to next node, and the principle that described new types of data link layer protocol (DLP) frame is transmitted is to adopt longest match principle; Described can be to utilize IP routing protocol such as OSPF (English be OpenShortest Path First) or Border Gateway Protocol (Englishly be Border Gateway Protocol, the BGP) dynamic routing table of Chan Shenging also can be the next explicit configuration route of traffic engineering of utilizing described new types of data link layer protocol to provide according to destination address sign indicating number decision route.
According to method provided by the invention; Call out the termination that connects when it is characterized in that utilizing relevant implementing signalling calling both sides or calling in many ways to connect foundation and termination of a call; Call signaling can be H.323, conversation initialized protocol (English is SessionInitiationProtocol; SIP), (English is MediaGatewayControlProtocol to Media Gateway Control Protocol; MGCP), one or several in Signaling System 7(SS-7) (english abbreviation is SS7) and other signaling protocol that possibly work out in the future; When certain user need be with another one or a plurality of user's communication; Link at first connects at the two ends that will converse; Be specially in source end with relevant signaling as H.323 or SIP or MGCP or SS7 or other signaling that possibly work out in the future make a call; Packet voice network node (DLP network node) response is called out; Network node both can be directly the destination address sign indicating number of called number as described new types of data link layer protocol (DLP) frame; Also can specify the destination address sign indicating number of a temporary designator in addition as described new types of data link layer protocol (DLP) frame; Simultaneously calling number as the source address sign indicating number of described new types of data link layer protocol (DLP) frame or or the interim value (temporary number) of specifying of network authentication administrative center as the source address sign indicating number; Network node is selected route according to the destination address code value; Transmit described new types of data link layer protocol (DLP) frame; Each switch on the selected path of network (DLP node device) uses signaling connecting to call out; Up to the purpose terminal; If call accepted is agreed at the purpose terminal; Then indication can begin to converse to the source end according to the signaling inverse signal; Cancellation connects link behind the end of conversation; It can be to be cancelled by the calling party that conversation connects link; Also can be that the callee initiates to cancel the link connection; Any end in the conversation is initiated the request of removing with signaling; The network switch accepts request; And be sent on each switch on the original talk line; These switches are removed information with the signaling transmission; Be sent to an other end of conversation always; End of conversation; The network switch is accepted to refresh after talking link connects and is transmitted; If what described packet voice adopted is towards connectionless mode; Set up the connection link of a logic so with signaling at the two ends of conversation; But the transmission of signal in network can not be a fixing circuit in communication process; It can be the transfer approach of similar IP; The circuit that signal transmits is not fixed, and only needs between the two ends of conversation, to set up virtual logic and connects.
According to method provided by the invention; It is characterized in that the voice signal transport process that produces in the communication process is at first that voiceband user is signal digitalized; Voice signal bit stream after if necessary can adopting voice compression algorithm to digitlization carries out processed compressed; Described digital coding method to analogue voice signal can be that any as CS-ACELP(CS-ACELP LD-CELP(low delay Code Excited Linear Prediction) definition that ADPCM(adaptive audio pulse code) PCM(pulse code modulation) definition G.711 definition defines in the existing speech coding standard is the english abbreviation of Conjugate-Structure Algebraic-Code-Excited Linear-Prediction; The ACELP(algebraic code-exited linear prediction of variations algebraic code-exited linear prediction) definition) RPE-LPT that adopts among or the voice coding technology of exploitation in the future; Export a frame of digital speech packet then at regular intervals at interval; Be encapsulated into the digitized speech bit stream after the framing in the payload field of described new types of data link layer protocol (DLP) frame as information load; According to the type of voice service (fixing local telephone network; Fixing national distance; Fixing international long-distance; Move domestic call; International mobile phone etc.) the business type field value of described new types of data link layer protocol (DLP) frame is set; And specify the destination address and the source address sign indicating number of described new types of data link layer protocol (DLP) frame according to voice service type and conversation number; If carrying out encrypting and authenticating, handles the voice signal demand; Carry out relevant the processing according to the algorithm classification of secure fields indication; And at call ends process negotiation to establish safety relation; The Security Parameter Index value is set in the SPI field in described new types of data link layer protocol (DLP) frame; In order to guarantee that the voice signal bit stream receives in order; The number of frames value is set in regular turn; At last described new types of data link layer protocol (DLP) frame is carried out sending on the physical link after frame check is handled; Physical circuit is sent into network switch (DLP node device) to described new types of data link layer protocol (DLP) frame that has encapsulated the voice signal bit stream; The transmission of voice signal in network then; Exchange all realizes through described new types of data link layer protocol (DLP) frame; Transmit in order in the network; Transmit; Every switch is on the way transmitted described new types of data link layer protocol (DLP) frame according to the destination address sign indicating number in described new types of data link layer protocol (DLP) header; Finally deliver to the purpose terminal; Parse the digital voice frame at the purpose terminal according to inverse process; And finally be reduced into voice signal; Described gap periods property at regular intervals ground output one frame of digital speech packet; Transmission cycle and digitizing solution; Whether adopt compression algorithm relevant; If what the output voice bitstream adopted is the voice bitstream of 64 kilobits per seconds in the present landline telephone; Can adopt the promptly each output 1280 bit (160 bytes of per 20 milliseconds of output one frame voice signals) voice signal; If having adopted G.729, standard voice signal carries out processed compressed; The output signal is the voice signal of 8 kilobits per seconds; Per 15 milliseconds of output 80 bits (10 byte); Then can in 30 or 45 milliseconds, export a Speech frame; The i.e. G.729 grouping of each exportable 2～3 frames; That is to say to be encapsulated into the voice signal bit stream of 20 or 30 bytes in a described new types of data link layer protocol (DLP) frame and transmit; If video telephone; When transmitting speech, also need transmit speech; Picture signal and voice signal after in the certain hour interval, sending digitlization simultaneously so; Voice signal after image after the digitlization and the digitlization all adopts relevant compression algorithm to carry out processed compressed; Concrete length is relevant with accepted standard; If for example adopting MPEG-2(MPEG is english abbreviation) of Motion Picture Experts Group; Perhaps ETSI(European Telecommunication Standard mechanism) DVB of definition transmits video telephone; Export 188 bytes so at every turn, promptly 188 bytes are mapped in described new types of data link layer protocol (DLP) frame at every turn and transmit.
According to method provided by the invention; It is characterized in that; Described new types of data link layer protocol comprises that a cover security mechanism guarantees the safety of upper-layer service (packet voice is professional) in the network transport process; Concrete grammar is :(1) thereby adopt the temporary number of network authentication center appointment to replace user's true number to shield user's true telephone number as the address of speech packet) the packet voice business is encrypted and authentication processing; The safety that realizes upper layer signal through these two kinds of measures transmits; Voice divides into groups to carry out the encrypting and authenticating processing if desired; Through a series of negotiation of two ends process of conversing at needs; Confirm the cryptographic algorithm of employing; Identifying algorithm; Be provided with or exchange initialization password etc.; Consulting operations such as encrypting and authenticating algorithm and exchange initialization password can adopt the internet security internet key exchange (english abbreviation is IKE) related and IKMP (english abbreviation is ISAKMP) and RFC2409 definition of RFC2408 definition to realize; Set up two security associations (English Security Association of being then at the two ends of communication; SA); And destination address (telephone number) according to conversation; The algorithms that adopt etc. confirm that (english abbreviation is PI) to a Security Parameter Index; This index value is added to data link layer protocol frame (DLP frame) is used for identifying the voice signal and encrypts in the Security Parameter Index field in the header; Security association during authentication processing; The encrypting and authenticating algorithm that Security Parameter Index and destination address identify security association uniquely to be adopted; Simultaneously relevant parameter such as destination address sign indicating number; The cryptographic algorithm that adopts; Identifying algorithm; The initialization password; Security Parameter Indexs etc. add in the security association database; Security association database has write down and security-related various data; It is 32 bits that the present invention defines the SPI field length; Wherein decimal value " 0 " is used for node this locality; Specific implementation is used; Decimal value 1～255 is kept to using in the future by IANA; Other value is used to identify security association; Owing to encrypt; The different needs of identifying algorithm carries out some data and fills; The data of filling are positioned at after the payload field; And a length value of filling adds in the filling length field value; The verify data that authentication processing generates is positioned at after the padding data field; Before the frame check field; Utilize the number of frames value in described new types of data link layer protocol (DLP) the frame header that anti-reproducing function is provided; When carrying out encryption; The scope of encrypting comprises payload data (the packet voice) on upper strata; Field contents such as padding data, the scope of authentication comprises the filling length field when carrying out authentication processing; The number of frames field; The Security Parameter Index field; Payload data; Field contents such as padding data.
According to method provided by the invention; It is characterized in that; Described new types of data link layer protocol comprise the perfect network control administrative mechanism of a cover realize the packet voice network comprise that Topology Discovery, 2 layers of protection are switched, the control and management of Link State indication, fault management, performance management, configuration management etc.; Described network control management realizes by control frame; The present invention's definition representes that when the binary value of the business type field of described new types of data link layer protocol frame is " 10000001 " content that the encapsulation of data link layer protocol frame (DLP frame) payload field is carried is a network control management information; Corresponding data link layer protocol frame is a control frame; Control frame is realized network control and management functions such as Topology Discovery, Link State indication, fault management, performance management, configuration management; For annular and network topology; Control frame also provides a kind of mechanism that realizes 50 milliseconds of protection switch functions; Control frame adopts TLV(Type-Length-Value; Type-length-value) structure; Type field length is 8 bits; Be used for identifying the type of control frame; Length field length is 8 bits; Be used for identifying the length of representing with the byte form among the TLV; What value (Value) field comprised control frame has particular contents such as related parameter; It is as shown in table 2 that the present invention defines in the control frame in the TLV structure usage of type field; What represent when wherein type field value is binary " 00010001 " that control frame carries is the OSPF(OSPF; English abbreviation is OSPF) Routing Protocol information; Control frame carries the type field binary value is that BGP(BGP is the english abbreviation of Border Gateway Protocol for " 00010010 " expression) Routing Protocol information; Control frame carries the type field binary value is Signaling System 7(SS-7) (english abbreviation is SS7) information for " 00010011 " expression; What the type field binary value carried for " 00010100 " expression control frame is signaling information H.323; Control frame carries the type field binary value is conversation initialized protocol (english abbreviation is SIP) signaling information for " 00010101 " expression; Control frame carries the type field binary value is Media Gateway Control Protocol (english abbreviation is MGCP) signaling information for " 00010110 " expression; When being binary " 11111111 ", type field representes that control frame is the self-defining management control frame of manufacturer; The self-defining management function of manufacturer comprises that equipment manufacturers are the self-defining network management control function of network management control function and operator that home built relevant devices is added; Its management data content is self-defined by manufacturer; But need to adopt the TLV structure; The number of frames value of described new types of data link layer protocol (DLP) control frame is used for identifying the sequencing that control frame sends; The described new types of data link layer protocol DLP of realization sign) function of sequence is successively sent in control information; The payload information field of described new types of data link layer protocol (DLP) control frame can comprise a plurality of control TLV information; The realization of chip of the present invention for ease (is generally adopted 32 like present chip; Requiring the control frame total length like this is the integral multiple of 32 bits); Requiring the length of The whole control frame is the integral multiple of 32 bits; If described new types of data link layer protocol (DLP) control frame length is not the integral multiple of 32 bits; Then behind control TLV, fill processing with the byte that is 0 entirely, the length of filling identifies with the byte form with the filling length field of described new types of data link layer protocol (DLP) control frame.
The usage of type field value in table 2. control frame (binary value)
The binary value of type field Usage
00000000 Keep
00000001 The Topology Discovery claim frame
00000010 The Topology Discovery response frame
00000011 Topology report frame
00000100 2 layers of protection switching request frame
00000101 Response frame is switched in 2 layers of protection
00000110 2 layers of protection switch status report frame
00000111 The configuring request frame
00001000 The configuration response frame
00001001 The configuration report frame
00001010 The fault inquiry claim frame
00001011 The fault inquiry response frame
00001100 The Trouble Report frame
00001101 The performance queries claim frame
00001110 The performance queries response frame
00001111 The performance report frame
00010000 WTR_Request(Wait-to-Restore claim frame)
00010001 Routing Protocol---OSPF
00010010 Routing Protocol---BGP
00010011 Signaling---Signaling System 7(SS-7) (english abbreviation is SS7)
00010100 Signaling---H.323
00010101 Signaling---conversation initialized protocol (SIP)
00010110 Signaling---Media Gateway Control Protocol (MGCP)
00010111～11111110 Keep
11111111 Manufacturer's self-defining dedicated network control and management frame
According to method provided by the invention; It is characterized in that; The network control administrative mechanism that described new types of data link layer protocol provides comprises Topology Discovery mechanism; Whom Topology Discovery is used for finding out is the neighbor node of network node (DLP node) and the state of neighbor node; Can find have what nodes to work on the ring with it for annular and network topology network node (DLP node); The realization of topology discovery function mainly relies on Topology Discovery claim frame (Topology_Discovery_Requestframe), Topology Discovery response frame (Topology_Discovery_Responseframe) and topology report frame (Topology_State_Reportframe) to realize; During installation of project stage or engineering operation; Network node (DLP node; Like node A) with the L2 address sign indicating number of this node as destination address periodically broadcast topology find that claim frame (Topology_Discovery_Requestframe) is to other node (claiming that one of them is a Node B); The transmission cycle is by Topology Discovery timer (Timer_Topology_Discovery; It is programmable sending timing; Default to 2 seconds) confirm; All nodes (like Node B) that receive the Topology Discovery claim frame respond for node A by the Topology Discovery response frame; Give node A the existence of Node B and feedback of status thereof; Node A adds contents such as other address of node sign indicating number that receives and corresponding work state in the topological address database of node A to; For annular and network topology; Station code (NAC) the field value content that has artis to go up in each address of node sign indicating number according to ring is confirmed to encircle upward or the node sequence in the grid; If node A receives the identical operations content from Node B continuous 3 times; Then think the Topology Discovery frame efficient in operation of node; Relevant topological state content is write the topological database of ingress; Network node (DLP node) is reported the state of this node to other node (especially network management entity) with topology report frame; Particularly for bus topology, star and tree-like these three types its topological states of node report of not protecting the topological structure of switch function owing to the topological structure reason; The present invention defines and representes when type field value is binary value " 00000001 " among the control frame TLV that control frame is the Topology Discovery claim frame; Be the Topology Discovery response frame during binary value " 00000010 "; Represent during binary value " 00000011 " that control frame is a topology report frame; The value (Value field value) of Topology Discovery claim frame, Topology Discovery response frame and topology report frame all is two parameters; First is a node address; Length is 8 bytes; Second is the node duty; Length is 1 byte; The node operating conditions is as shown in table 3
Second parameter of table 3. Topology Discovery frame
Value State
00000111～11111111 Keep
00000110 Forced Switch (Forced Switch, FS)
00000101 Physical signalling inefficacy (Physical Signal Fail, PSF)
00000100 Physical signalling degeneration (Physical Signal Degrade, PSD)
00000011 Manual Switch (Manual Switch, MS)
00000010 Wait-to-Restore (Wait to Restore, WTR)
00000001 Operate as normal (Operation normally) or idle (Idle)
00000000 Initialization (Initiation state)
Attention: 1. Forced Switch and Manual Switch state only are used for annular and network topology ?
According to method provided by the invention; It is characterized in that; The network control administrative mechanism that described new types of data link layer protocol provides comprises 2 layers of wrap protection; 2 layers of protection switched to refer to when the network physical link and broken down (like fibercuts) or the permission of the node device K1/K2 protocol that similar SDH ring adopts when breaking down realizes the power of self-healing recovery in 50 milliseconds; 50 milliseconds of protection switch functions provided by the invention are mainly used in annular or network topology etc. and can realize protecting on the link of switching; With two fine rings is example; If certain network node (DLP node on the ring; Be assumed to node 2) go up in certain direction (be assumed to from node 1 to node 2 direction) that (its value is programmable 20 milliseconds of times; The default value of the present invention definition is 20 milliseconds) in do not receive any data message (comprising business data frame, control frame, traffic management frame or empty frame etc.) or physical link breaks down (like the fracture of optical fiber facility) or node breaks down (losing efficacy or physical signalling is degenerated like physical signalling); This node gets into 2 layers of protection switch status; Sending 2 layers of guard mode claim frame (L2PS_Requestframe) goes up coupled node (like node 1) for network (ring or network topology); Node 1 also gets into 2 layers of protection switch status (L2PS) after receiving these 2 layers of guard mode claim frames; And send 2 layers of protection switch status report frame (L2PS_State_Reportframe) and give the node that connects network management entity or be broadcast to all nodes that are in normal state on the ring; In the L2PS attitude; All packets of 2 are switched on the subsequent use path from node 1 to node; If the fault clearance on the node 2; Node 2 gets into normal state; Start the WTR(Wait-to-Restore) timer (Timer_WTR; Its value is programmable; Scope is 0～1800 second; Default value is 10 seconds); In case the WTR timer stops; Node 2 sends WTR claim frame (WTR_Requestframe) along the path before and after switching and gives node 1; Node 1 returns normal state from node L2PS attitude after receiving this frame; When being binary " 00000100 ", the type field value that the present invention defines control frame representes that control frame is 2 layers of protection switching request frame; When being binary " 00000101 ", the type field value of control frame representes that control frame is that response frame is switched in 2 layers of protection; When being binary " 00000110 ", the type field value of control frame representes that control frame is that the report frame is switched in 2 layers of protection; 2 layers of protection switching request frame TLV structure intermediate value (Value; V) parameter of field has 2; First is this address of node sign indicating number; Length is 8 bytes; Second duty (Forced Switch FS, physical signalling inefficacy PSF, physical signalling degeneration PSD and Manual Switch) that parameter is this node; Length is 1 byte; The binary value of each state is as shown in table 4; Other value of this byte keeps to be done to use in the future; The parameter that value field in the response frame TLV structure is switched in 2 layers of protection has two; First is this address of node sign indicating number; Length is 8 bytes; Second parameter length is 1 byte; Its binary value is successfully realized switching for " 00000000 " is represented; Binary value is switched unsuccessful for " 11111111 " expression; Other binary value keeps; 2 layers of protection are switched and are reported that value field has three parameters in the frame TLV structure; First parameter is the address of node sign indicating number; Length is 8 bytes; Second parameter is the reason of switching of node; Length is 1 byte; The binary value of each attitude is as shown in table 4; The 3rd parameter representes whether node is in 2 layers of guard mode; Wherein binary value is in 2 layers of protection switch status for " 11111111 " expression; Binary value is in normal state for " 00000000 " expression; Other is worth reservation; When control frame TLV type field value is binary " 00010000 "; The expression control frame is the WTR_Request frame; The WTR_Request frame has only a parameter; Length is 8 bits; Value is represented successful Wait-to-Restore for binary " 11111111 ", and other is worth reservation.
The 2nd parameter type of table 4.L2PS claim frame and L2PS report frame
Value State
10000000 Forced Switch (Forced Switch, FS)
00100000 Physical signalling inefficacy (Physical Signal Fail, PSF)
00001000 Physical signalling degeneration (Physical Signal Degrade, PSD)
00000010 Manual Switch (Manual Switch, MS)
Other Keep
According to method provided by the invention; It is characterized in that; The network control administrative mechanism that described new types of data link layer protocol provides comprises deployment management mechanism; Deployment management mechanism is used for realizing to the relevant configuring ports management of network node (DLP node) equipment; The port address of network node (DLP node) equipment must dispose one two layers address as the source address sign indicating number (SAC) of this port in the installation of project stage; The configuration management frame comprises three kinds: configuring request frame (Configuration_Requestframe), configuration response frame (Configuration_ResponseFrame), configuration report frame (Configuration_Reportframe); During installation of project stage or engineering operation; Network management entity is sent the configuring request frame by network management interface to each link (port) of network node (DLP node) equipment and is configured; The DLP node responds to network management entity by configuration response frame or configuration report frame; The present invention defines when type field value is binary system " 00000111 " value among the control frame TLV and representes that control frame is the configuring request frame; Be the configuration response frame during binary system " 00001000 "; Represent during binary system " 00001001 " that control frame is the configuration report frame; The configuring request frame comprises two parameters; First is origin node address (length is 8 bytes); Second is new node address sign indicating number (length is 8 bytes); The value of configuration response frame (Value field value) comprises three parameters: first is origin node address (length is 8 bytes); Second parameter is new node address sign indicating number (length is 8 bytes); The 3rd parameter length is 1 byte; Its binary value is " 00000000 " expression configuration successful; Binary value " 11111111 " expression configuration is unsuccessful; Other value keeps to give in the future to be used; The configuration report frame comprises two parameters: first is a node address (length is 8 bytes); Second parameter length is 8 bytes, representes the configuration address of this node.
According to method provided by the invention; It is characterized in that; The network control administrative mechanism that described new types of data link layer protocol provides comprises fault management mechanism; Fault management mechanism is used for realizing the fault management to network node (DLP node); Fault management capability is realized by the fault management frame; The fault management frame comprises three: fault inquiry claim frame (Fault_Inquiry_Requestframe), fault inquiry response frame (Fault_Inquiry_Responseframe) and Trouble Report frame (Fault_Reportframe); The present invention defines and representes when type field value is binary value " 00001010 " among the control frame TLV that control frame is the fault inquiry claim frame; Be the fault inquiry response frame during binary value " 00001011 "; Represent during binary value " 00001100 " that control frame is the Trouble Report frame; The fault inquiry claim frame comprises 1 parameter; This parameter is node address (length is 8 bytes); The value of fault inquiry response frame (Value field value) comprises two parameters: first is a node address (length is 8 bytes); Second parameter length is that 1 byte is used for representing fault type; Its binary value is physical signalling inefficacy (PSF) for " 00000000 " expression fault; Binary value " 11111111 " expression fault is physical signalling degeneration (PSD); Binary value is the normal fault-free of " 00001111 " expression node; Other value keeps to give in the future to be used; The value field of Trouble Report frame comprises two parameters: first is a node address (length is 8 bytes); Second parameter length is that 1 byte is used for representing fault type; Its binary value is physical signalling inefficacy (PSF) for " 00000000 " expression fault; Binary value " 11111111 " expression fault is that physical signalling is degenerated (PSD), and other value keeps to give in the future to be used.
According to method provided by the invention; It is characterized in that; The network control administrative mechanism that described new types of data link layer protocol provides comprises performance management mechanism; Performance management mechanism is used for realizing the performance management to network node (DLP node); Performance management function realizes by the performance management frames; The performance management frame comprises three kinds of frames: performance queries claim frame (Performance_Inquiry_Requestframe), performance queries response frame (Performance_Inquiry_Responseframe) and performance report frame (Performance_Reportframe); When the control frame type field value is binary " 00001101 "; The expression control frame is the performance queries claim frame; The performance queries claim frame is used for certain performance indications of certain network node of requesting query (DLP node); When the control frame type field value is binary " 00001110 "; The expression control frame is the performance queries response frame; The performance queries response frame is used for certain performance indications of certain node that response performance query requests frame proposes; When the control frame type field value is binary " 00001111 "; The expression control frame is the performance report frame; The performance report frame is used for to each item performance indications of certain node of network management entity report; The value of performance queries claim frame (Value) field comprises three parameters; First parameter is wanted the node address sign indicating number of query performance for request; Length is 8 bytes; Second parameter is the time measurement unit that is used for identifying calculation of performance indicators; Length is 4 bits; Wherein binary " 0001 " expression measurement unit is second; Binary " 0010 " expression measurement unit is minute; Binary " 0011 " expression measurement unit is hour; Binary " 0100 " expression measurement unit is the sky; Other field value keeps to using in the future; The 3rd parameter is the performance indications type; Length is 4 bits; Wherein binary " 0001 " expression performance indications are the Frame Check Sequence errors; Binary " 0010 " expression number of dropped packets; Binary " 0011 " expression packet loss; The time delay (time delay) of binary " 0100 " expression bag; Other value keeps to give in the future to be used; The value of performance queries response frame (Value) field comprises 4 parameters; First parameter length is 8 bytes; Be used for representing node address that the performance queries claim frame is responded; Second parameter length is 4 bits; Be used for identifying the time measurement unit of calculation of performance indicators; The 3rd parameter length is that 4 bits are used for identifying the performance indications type; The 4th parameter length is 3 bytes; Be used for representing the performance index value that specifically will inquire about; The value of performance queries response frame (Value) field second the same with the usage of second and the 3rd parameter of value (Value) field of performance queries claim frame with the usage of the 3rd parameter (time measurement unit and performance indications type); The value of performance report frame (Value) field comprises 4 parameters; First parameter length is 8 bytes; Be used for representing to send the node address of performance report to network management entity; Second parameter length is 4 bits; Be used for identifying the time measurement unit of calculation of performance indicators; The 3rd parameter length is that 4 bits are used for identifying the performance indications type; The 4th parameter length is 3 bytes; Be used for representing the performance index value that specifically will report, the value of performance report frame (Value) field second the same with the usage of second and the 3rd parameter of value (Value) field of performance queries claim frame with the usage of the 3rd parameter (time measurement unit and performance indications type).
According to method provided by the invention; It is characterized in that; The traffic engineering that described new types of data link layer protocol provides powerful traffic management mechanism to realize network, method are that at first convection current is classified through all business of network, promptly to the miscellaneous service (speech from the upper strata; The IP data; Digital Television; Ethernet mac frame circuit simulation signals etc.) carrying out priority classification is divided into the business of high priority and the business of low priority; With classification be positioned at two layers data-link layer address (source address sign indicating number and destination address sign indicating number) expression upper-layer service address (destination address and source address) simultaneously to business according to belonging to which country or geographic area; Which area of certain country or geographic area; Certain node in certain area; Certain user of certain node carries out the classification of countries, thereby representes that with the L2 address of classification physical link port L2 address carries out the classification of countries to physical resource, distributes different band width in physical links to be used to transmit dissimilar business simultaneously; The miscellaneous service of the whole network of flowing through is mapped on the actual physical link according to different priority type and region classification; Realize the flow and the bandwidth resources of whole network are carried out uniform dispatching management and monitoring through the traffic management frame, specific as follows: at first to from data link layer---all business of the above level of DLP layer are classified, and are divided into the business of high priority and the business of low priority; Business packet includes network managing control information (the control frame) of high priority; Traffic management information (traffic management frame); Various real-time voice services (comprise fixing or mobile voice or video telephone); Various real-time video (Digital Television); Based on IP(IPv4/IPv6) real time business and SDH/SONET circuit simulation signal; The business of low priority is general IP data service, and the occurrence of various types of traffic identifies with the business type field value in described new types of data link layer protocol (DLP) frame, in described new types of data link layer protocol (DLP) frame, has defined the destination address sign indicating number and the source address sign indicating number of a classification; The destination address sign indicating number adopts identical structure with the source address sign indicating number; All by national code; Domestic area code; Station code and personal code work four parts are formed, and are used for identification service respectively to belong to which country or geographic area; Which area in certain country or the geographic area, which node in certain area; Which user of which intranodal; For IP operation, destination address sign indicating number and source address sign indicating number are represented purpose IP address and the forwarding equivalence class of source IP address in the IP packet head respectively, represent the telephone number of both call sides respectively for voice service destination address sign indicating number and source address sign indicating number; The address of representing Digital Television transmitting terminal and receiving terminal for Digital Television (digital video) business purpose address code and source address sign indicating number respectively; For the ethernet mac frame; Adopt business purpose address codes such as the circuit of Time Division Multiplexing technology such as the circuit simulation signal of PDH and the source address sign indicating number address of expression signal transmitting terminal and receiving terminal respectively, pass through data-link layer address like this miscellaneous service (speech from the upper strata; Data; Video; Ethernet and TDM circuit simulation signal) carried out the classification of region, miscellaneous service according to different country or geographic area; Certain area in particular country or the geographic area; Certain node in the area; Certain user of certain node classifies; Simultaneously each node port (each light wave that comprises wavelength-division multiplex system) of whole physics transmission network is identified the source address) of one two layers data-link layer address (DLP frame; And the different link of regulation is used to transmit business dissimilar and that lead to different regions, and the bandwidth resources that whole physics is transmitted network are classified like this, and some bandwidth is used to transmit important real time business such as speech and real-time video; Some is used to transmit general IP data service; Some bandwidth link is used to transmit international business, and some bandwidth link is used to transmit business transprovincially, and some bandwidth link is used to transmit local service; And if network break down allow to transmit the IP data link by the service occupation of high priority; Traffic management frame through the present invention definition is monitored processing to the flow and the network bandwidth resources of whole network, and network management system comprises a traffic engineering database, this data-base recording the link circuit resource distribution situation of whole network; Flow through the type of service of network; The overall budget number; Total flow; Physical link speed; Allow parameters such as maximum transfer rate; The present invention definition is when data link layer protocol frame (DLP frame) when the business type field value was set to binary value " 10000010 " in the header, what represent the encapsulation of described new types of data link layer protocol (DLP) frame was the traffic management frame, (English is Type-Length-Value to the traffic management information employing type-length-value of traffic management frame; TLV) structure; Wherein, type field length is 8 bits, is used to refer to the type of traffic management frame; Length field length is 8 bits; Be used for byte form indicated value (Value) length of field, value (Value) field comprises concrete traffic management content frame, and the usage of network management frame type field is as shown in table 5; What represent when wherein type field value is binary " 00000001 " among the traffic management frame TLV that traffic management frame payload carries is link traffic flow attribution information; Its value (Value) field contents comprises four parameters, and first parameter is a node address, and length is 8 bytes; Second parameter is type of service; Be used for expression through the type of service under certain node flow bag (grouping), and length is 1 byte, and the service class offset of dissimilar business is confirmed by table 1; The 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through certain node link flow; Wherein binary value is peak rate (unit is a bits per second) for " 00000001 " expression flow measurement parameter type, and binary value is Mean Speed (unit is a bits per second) for " 00000010 " expression flow measurement parameter type, and binary value is that (unit is bag per second) to " 00000011 " expression flow measurement parameter type for maximum bag (grouping) number; Binary value is that (unit is bag per second) to average packet (grouping) number for " 00000100 " expression flow measurement parameter type; Binary value is peak value burst length (unit is a byte) for " 00000101 " expression flow measurement parameter type, and binary value is agreement burst length (unit is a byte) for " 00000110 " expression flow measurement parameter type, and binary value is that (unit is byte) to burst excess length for " 00000111 " expression flow measurement parameter type; Other value keeps to give in the future to be used; The 4th parameter length is the value that 4 bytes are used for identifying concrete various flows, representes the Resource Properties of various physical links when type field value is binary system " 00000100～00100111 " among the traffic management frame TLV, and the types value of various concrete links is as shown in table 5; The source attribute values of various physical links includes four parameters; First parameter is a node address, and length is 8 bytes, and second parameter is type of service; Be used for expression through the type of service under certain node flow bag (grouping); Length is 1 byte, and the service class offset of dissimilar business confirms that by table 1 the 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through certain node link flow; Wherein binary value is that (unit is bits per second) to peak rate for " 00000001 " expression flow measurement parameter type; Binary value is Mean Speed (unit is a bits per second) for " 00000010 " expression flow measurement parameter type, and binary value is that " 00000011 " expression flow measurement parameter type is maximum bag (grouping) number (unit is the bag per second), and binary value is that (unit is bag per second) to average packet (grouping) number for " 00000100 " expression flow measurement parameter type; Binary value is that (unit is byte) to the peak value burst length for " 00000101 " expression flow measurement parameter type; Binary value is agreement burst length (unit is a byte) for " 00000110 " expression flow measurement parameter type, and binary value is burst excess length (unit is a byte) for " 00000111 " expression flow measurement parameter type, and other value keeps to give in the future to be used; The 4th parameter length is that the number of frames value that 4 bytes are used for identifying the value traffic management frame of concrete various flows is used for identifying the sequencing that the traffic management frame sends, and realizes the function that sign DLP flow control management information is sent sequencing, and the payload information field of DLP traffic management frame can comprise a plurality of traffic management TLV information; The realization of chip of the present invention for ease (is generally adopted 32 like present chip; Requiring traffic management frame total length like this is the integral multiple of 32 bits), the length that requires whole traffic management frame is the integral multiple of 32 bits, if original DLP traffic management frame length is not the integral multiple of 32 bits; Then behind traffic management TLV, using is that 0 byte is filled processing entirely, and the length of filling identifies with the byte form with the filling length field of DLP traffic management frame.
The usage of table 5. traffic management frame type field
The binary value of type field Usage
00000000 Keep
00000001 The link flow attribute
00000010 10Mbps ethernet link attribute
00000011 100Mbps ethernet link attribute
00000100 10/100Mbps ethernet link attribute
00000101 The gigabit ethernet link attribute
00000110 10Gb/s ethernet link attribute
00000111 STM-0 SDH link attribute
00001000 STM-1/OC-3c SDH link attribute
00001001 STM-4/OC-12c SDH link attribute
00001010 STM-16/OC-48c SDH link attribute
00001011 STM-64/OC-192c SDH link attribute
00001100 STM-256/OC-768c SDH link attribute
00001101 64 kilobits/second physical link attributes
00001110 1544 kilobits/second PDH link attributes
00001111 2048 kilobits/second PDH link attributes
00010000 6312 kilobits/second PDH link attributes
00010001 8448 kilobits/second PDH link attributes
00010010 4368 kilobits/second PDH link attributes
00010011 4736 kilobits/second PDH link attributes
00010100 139264 kilobits/second PDH link attributes
00010101 IEEE 802.11a link attribute
00010110 IEEE 802.11b link attribute
00010111 IEEE 802.11g link attribute
00011000 IEEE 802.11h link attribute
00011001 The GSM link attribute
00011010 IEEE 802.16a(2-11GHz) link attribute
00011011 IEEE 802.16c(10-66GHz) link attribute
00011100 The WCDMA link attribute
00011101 The TD-SCDMA link attribute
00011110 The CDMA2000 link attribute
00011111 The DVB link attribute
00100000 The MPEG-1 link attribute
00100001 The MPEG-2 link attribute
00100010 The MPEG-3 link attribute
00100011 The isdn link attribute
00100100 The adsl link attribute
00100101 The VDSL link attribute
00100110 Other xDSL link attribute
00100111～11111111 Keep
No matter compare existing speech tranmission techniques, be to Traditional use time division multiplexing, circuit switching and connection-oriented speech tranmission techniques or novel IP phone the present invention has carried out a series of innovation, specific as follows:
Adopt time division multiplexing with respect to having now, following innovation arranged towards connection and the present invention of Circuit-switched speech tranmission techniques:
(1) line efficiency is high.In the existing P STN phone since it be the connection link of between both call sides, setting up a special use; Have only a side such as user A to have signal to be sent to an other side (being assumed to user B) during actual the conversation; This moment, user B was in idle condition to the circuit between user A; But this circuit still is in seizure condition; Actual in addition test shows; When even user A sends information (speech) to user B; The centre also also has a lot of times to be in no information state (promptly not speaking); User A has still taken whole circuit from A to B in these times; This telephone communication mode is like the automobile of running on expressway; If a car is local from certain place to another one; Must keep two tracks to it so; A track of going direction; A track of returning; Even this car in motion before and after circuit and return the track be empty, (a certain moment, it only took certain space; Front and back are empty certainly; The track that another one is returned also is empty) also to keep the space, track for this car; Though this communication mode has service quality to guarantee; But efficient obviously is that poor efficiency is (because front and back all are empty; Can guarantee not can traffic congestion; But one road (track) can only run a car; The obvious poor efficiency of efficient), this poor efficiency communication mode must cause communications cost high.And adopt method provided by the invention; Because what the present invention adopted is packet-switch technology; What adopt is the classified statistics multiplex techniques; Between both call sides, only set up a logical links rather than actual circuit; Thereby improved line efficiency greatly; If one side such as user A have signal to be sent to an other side (being assumed to user B) during the actual conversation of user; This moment, user B was in idle condition to the circuit between user A; But this circuit is not to be in seizure condition but to use to others; This telephone communication mode is like the traveling automobile on the present highway; If this car is local from certain place to another one; The space uses for other vehicle before and after so during its actual travel; Use to others especially as for the track of returning; The great like this utilization rate that improves circuit; As not occurring traffic congestion on the highway in order to guarantee; Need control the flow of vehicle; The present invention also provides the traffic engineering ability; The cost of network can be reduced so greatly, also the user's communications expense can be reduced simultaneously.
(2) can new business be provided for the user.Existing pstn telephone is owing to being the special technology that designs for the transmission voice service merely; On this network, be difficult to open up new business; Along with the development of technology and user continuous enhancing to information requirements; The user hopes can obtain to comprise the various information of speech, data, video and multimedia whenever and wherever possible, can't satisfy this requirement of user to this traditional voice network.And adopt method provided by the invention; What adopt is the grouping tranmission techniques; And can with the compatibility of internet; On same network, not only simple voice service can be provided; Visual telephone service also can be provided, Video service is provided, the various data services that comprise multimedia also can be provided; Promptly on a network, can realize the transmission of full-service, can satisfy the user and obtain to comprise any information that he wants such as speech, data, video and multimedia messages whenever and wherever possible.
(3) be smoothly transitted into following unified public network on the basis of reservation existing telephone transmission network elite.What existing pstn telephone technology adopted is time division multiplexing, circuit switching and connection-oriented speech tranmission techniques; This technology can not with unify the public network compatibility future of adopting packet-switch technology, this speech transmits network technology can not transit directly to unified public network of future generation.And adopt method provided by the invention; What adopt is packet-switch technology; Some elite such as telephone number resource of existing telephone network etc. have been kept; Through existing telephone network being carried out minor modifications the existing telephone network is smoothly transitted on the unified public network of future generation; Realize that existing telephone network is smoothly transitted into unified public network of future generation; Can protect existing investment; And can utilize existing telephone number resource; The user utilizes an existing number can obtain to comprise speech; Data; Video is in interior whole business, thereby need not to use IP address in short supply.
(4) for the speech tranmission techniques powerful security performance is provided.Existing pstn telephone technology is dangerous; Can not satisfy the demand of user to the fail safe of signal; Can be like those spiteful people through the phone of on subscriber's line, pegging graft; Get final product careless free call on somebody else's expense through illegal means, also can at will eavesdrop the content of conversation, the user's communication content also has no safety guarantee; Be easy to eavesdropped; Even conversation content has been eavesdropped, the user also knows nothing, and speech transmits in the way has no safety guarantee.And adopt voice over packet method provided by the invention that powerful safety function is provided; The invention provides three kinds of security mechanisms; The one, in network,, on the transmission lines of speech, be difficult to discern user's real identity like this with a temporary designator replacement user's true number; Two provide a kind of authenticating user identification mechanism, need pass through network authentication administrative center when the user makes a phone call and carry out authentication, have avoided the possibility of fake user identity in the traditional voice communication; Three have provided a kind of mechanism of signal being carried out authentication and encryption; And it is irrelevant with concrete algorithm; It is the new encryption standard that the U.S. is used to replace the original cryptographic algorithm standard DES that uses that Virtual network operator promptly can adopt common crypto algorithm such as AES(AES), DES; Also can adopt special-purpose encryption algorithm (like the military encryption algorithm) of special use according to special requirement; If, can change algorithm at once in case find that the enemy possibly crack password.Making like this becomes impossiblely through the careless free call on somebody else's expense through illegal means of phone of on subscriber's line, pegging graft, and the content of user's communication is not easy to be eavesdropped, and this technology is particularly suitable for diplomacy, the military communication field of safety requirements.
Compare with existing IP phone, the present invention has the following advantages:
(1) processing is simple, expense is little.Present IP phone need be earlier voice signal being encapsulated into real time transport protocol when transmitting speech; And then be encapsulated into User Datagram Protoco (UDP); Be encapsulated into again in the IP bag; Again IP is sealed at last and install to data link layer protocol; Data link layer protocol possibly also not be a kind of in reality; Only the voice signal after the digitlization is encapsulated into data link layer; Reach 47 bytes through above-mentioned encapsulation process overhead byte; If adopt IPv6 only the IP header expense of 40 bytes is just arranged, add that the expense of link layer header is then bigger.Because packet voice transfer approach provided by the invention need not to handle through IP, directly voice signal is encapsulated into data link layer, and has only the data link layer protocol of one deck, and handle simply the great like this network overhead that reduced.
(2) there is service quality to guarantee.Because IP network provides a kind of service of doing one's best; IP network does not have service quality to guarantee; So IP phone does not have service quality to guarantee; Guarantee speek voice quality; Just must guarantee bandwidth, and in fact spendable bandwidth possibly satisfy user's demand never, the relation object of this and automobile and road seemingly; The growth rate of road width of roadway can not surpass the growth rate of automobile quantity, otherwise traffic congestion can only as be carried out limitation management to flow by management.For guaranteeing the service quality of speech; The invention provides multiple assurance mechanism; One of them is that miscellaneous service is carried out classification processing; Business is divided into the high real time business of quality of service requirement (having comprised voice service) and unessential non-real-time service such as common IP operation two big classes; And be defined in priority treatment forwarding real time business when handling, when can not meeting the demands, network at first abandons the IP operation bag to guarantee the transmission of this important real time business of speech; Another is to the invention provides the traffic engineering ability; Utilize traffic engineering can dredge the flow of network; As being appointed as the transmission real time business for some particular link; Some link is appointed as and is transmitted less demanding business such as IP operation; And those links that transmit real time business only allow to transmit a certain amount of data; In case the real time business link breaks down, interrupt the transmission of non-real-time service such as common IP operation immediately, give real time business these link assignment.
(3) can utilize the number resource of existing telephone, need not to use the IP address.Because IP is the routing forwarding processing that realizes the IP bag through IP address (mainly being purpose IP address); And phone is realized conversing through telephone number; Therefore when transmitting speech with IP; Must realize the mapping of telephone number to the IP address; If it is plain old telephone that a side is arranged; One side is a computer, and so once conversation need be carried out twice mapping treatment.If both sides are plain old telephones, provide IP to transmit speech then needs 4 mapping treatment, implements complicacy like this, and because present IP network adopts is IPv4, IPv4 adopts the address of 32 bits, can have 2 in principle < > 32 <> Individual address; Tens addresses promptly can be arranged; But because IPv4 is divided into the IP address 5 types of addresses such as A, B, C, D, E; Actual available IP address much less, this makes the IP address very in short supply, the address that therefore can be used for IP phone is nervous; If IP adopts IPv6; Can solve IP address problem in short supply, but crucial problem is that IPv6 and IPv4 are incompatible, and the present IP network equipment overwhelming majority is not supported IPv6.And adopt the present invention to transmit speech; Need not the IP address; Directly can use existing telephone number resource; Only need have the network authentication center to specify an address code (destination address sign indicating number or source address sign indicating number) to the user, need not complicated telephone number to the IP address, the IP address arrives the mapping treatment of telephone number.
(4) provide multiple security mechanism to ensure the safety of Speech Communication.As everyone knows; Present networks has no safety; Itself can be modified the IP bag; Its content can be stolen; Duplicate; If user's conversation need to be keep secret like this; Common IP phone can not meet the demands; If guarantee the safety of IP phone; A kind of IP security mechanism) that must use a kind of security mechanism IPsec such as (IPsec to formulate as the internet engineering task group IETF of Internet Standard mechanism; So on the one hand more XXL processing expenditure, the real-time requirement that possibly cause being difficult to more satisfy voice service owing to carry out encryption to need the time (particularly handling) on the one hand in addition with software.And the present invention can provide reliable safety guarantee for voiceband user, the invention provides three kinds of security mechanisms, the one, in network,, on the transmission lines of speech, be difficult to discern user's real identity like this with a temporary designator replacement user's true number; Two provide a kind of authenticating user identification mechanism, need pass through network authentication administrative center when the user makes a phone call and carry out authentication, have avoided the possibility of fake user identity in the IP phone; Three have provided a kind of mechanism of signal being carried out authentication and encryption; And it is irrelevant with concrete algorithm; It is the new encryption standard that the U.S. is used to replace the original cryptographic algorithm standard DES that uses that Virtual network operator promptly can adopt common crypto algorithm such as AES(AES), DES; Also can adopt special-purpose encryption algorithm (like the military encryption algorithm) of special use according to special requirement; If, can change algorithm and password at once in case find that the enemy possibly crack password.
(5) the network protection switch function is provided, can have realized 50 milliseconds of switch functions of network failure.In case 50 milliseconds of protections are switched and are referred to network and break down; Break down like circuit or equipment; Require so in 50 milliseconds time, the circuit of conversation to be switched on the in addition normal circuit from faulty line; If in 50 milliseconds of times, realized this function, the interruption of the imperceptible conversation of user.Present networks is not protected switch function; Because what IP network adopted is three layers of route; The realization three-layer network protection switch time of IP network is approximately several seconds now; 50 milliseconds of protections in this and the Speech Communication switch that to require gap to differ all too big; If therefore link fails possibly cause the interruption of IP phone, thereby can not satisfy the real-time requirement of voice service.And the present invention provides 50 milliseconds of wrap protections on data link layer, adopts the present invention can realize that 50 milliseconds of protections of network switch, and guarantees the real-time requirement of voice service.
(6) the traffic engineering ability is provided.Present networks adopts two types of Routing Protocols, and (one type is Interior Gateway Protocol; Other one type for Exterior Gateway Protocol) realize that the forwarding of IP bag handles; Rely on existing Routing Protocol to realize that the forwarding of IP bag is not have the traffic engineering ability; Even this possibly cause having between two nodes many to connect link; But router relies on Routing Protocol all to be forwarded to the IP bag on the link; It is congested to cause this link to produce; And other link is in idle condition; Cause losing of voice signal thereby produce packet loss, can not satisfy the requirement of voice service.And the invention provides the traffic engineering ability, and can carry out dynamic management to the flow of whole network, make whole network link balanced, can not produce some link idle, and other link congestion causes packet loss, thereby satisfy the requirement that real-time speech transmits.
(7) can realize the fusion of existing telephone network and IP network, make existing telephone network and IP network be smoothly transitted into unified public network of future generation.Existing telephone network gets up through 100 years of development, has built up a whole network system now, has formed the complete communication plan of a cover.And IP network is a network that grows up nearest decades; Whether and the IP network technology unify will occupy crucial status in the public network in future, support IP operation to become and estimate the important indicator whether a kind of network technology has permanent vitality.But telephone network and IP network are two various network after all, no matter are technology itself, or network requirement all has very big difference.If on the simple IP network that telephone network is added to, whole technique will be very complicated so on the one hand, and actual proof, because IP network does not have service quality to guarantee, telephone network of stack realizes that the transmission of voice service is infeasible on IP network.On the other hand, this network possibly be to get the short length of mending, and whole network becomes David's deer, and what cause network using is the shortcoming of two kinds of networks, and does not use both advantages.In addition, from there is some evidence, rely on present networks also to be not enough to constitute unified public network of future generation merely.And adopt the present invention can realize the fusion of telephone network and IP network; Double advantage of getting two kinds of networks; Reject both shortcomings again; And not only can realize the fusion of telephone network and existing IPv4 network; Also can realize telephone network and the fusion of IPv6 network in the future, and can realize the fusion of IPv4 and IPv6 network.
(8) need not the requirement that user multi-service communication can be realized in the IP address.Though IP network can provide all business that comprise speech, data and video; But because existing telephone network is only supported voice service; The IP video telephone can only realize that the multi-service that guarantees even without service quality is irrealizable at computer and intercomputer on present IP phone.And adopting the present invention can need not the multi-service communicating requirement that a number is realized in the IP address, the user can provide speech, data and video traffic on a network.
Description of drawings
Further specify characteristics of the present invention below in conjunction with accompanying drawing and instance.
Fig. 1 is the service model (conception sketch map) that the present invention adopted
Fig. 2 is used to transmit the DLP data frame structure of voice service for the present invention
The DLP control frame structure that Fig. 3 adopts for the present invention
The DLP traffic management frame structure that Fig. 4 adopts for the present invention
The empty frame structure of DLP that Fig. 5 adopts for the present invention
Fig. 6 delimits the finite state machine figure that mode adopted for the frame of the DLP frame that the present invention adopted
Destination address sign indicating number and and source address code structure that Fig. 7 adopts for the present invention
Fig. 8 goes up the protocol stack sketch map that transmits speech for what the present invention adopted in SDH (Synchronous Digital Hierarchy) (SDH)
The protocol stack sketch map that on PDH (Pseudo-synchronous Digital Hierarchy) PDH, transmits speech that Fig. 9 adopts for the present invention
The protocol stack sketch map that on Ethernet, transmits speech that Figure 10 adopts for the present invention
Figure 11 goes up the protocol stack sketch map that transmits speech for what the present invention adopted at wavelength division multiplexing (WDM)
Figure 12 goes up the protocol stack sketch map that transmits speech for the optical transfer network (OTN) that the present invention adopts
The protocol stack sketch map that on wireless lan (wlan), transmits speech that Figure 13 adopts for the present invention
Figure 14 for the present invention adopt at wireless MAN (WMAN) go up the protocol stack sketch map that transmits speech
Figure 15 is the (X that uses proposed by the invention < > 43 <> + 1) sketch map of multinomial scrambler and descrambling code
Figure 16 is that packet voice of the present invention transmits sketch map
Shown in Figure 17 is traffic engineering sketch map of the present invention
Figure 18 is one and calls out realization example
The order of message transmission is earlier from left to right in all DLP frame block diagrams of the present invention's definition; Then from top to bottom; At first transmit highest significant position in each byte, the leftmost bit in all illustration block diagrams is a highest significant position, and the reserved word segment value in all block diagrams is 0.
Shown in Figure 1ly adopted service model (conception sketch map) by the present invention; Physical layer can be any physical-layer techniques of existing communication network using in this framework; Data link layer for the present invention propose the new types of data link layer protocol---(english abbreviation is LP) to the data link rules; The voice service layer is positioned at the client layer of DLP; Wherein physical-layer techniques comprises that (english abbreviation is that (english abbreviation is SONET) for the Synchronous Optical Network of whole speed ranges of SDH (Synchronous Digital Hierarchy) (english abbreviation is SDH) or ANSI definition of whole speed ranges of G.707 defining of PDH) for the PDH (Pseudo-synchronous Digital Hierarchy) of whole speed ranges that G.702 :ITU-T defines; All (english abbreviation is DM) to the wavelength-division multiplex system of speed range; All (english abbreviation is that the Ethernet of whole speed ranges of OTN) 02.3 definition is (if physical link is an Ethernet to the optical transport network of speed ranges; DLP) on MAC sublayer MAC so; (english abbreviation is xDSL) to various types of Digital Subscriber Line; Comprise various mobile communication (the GSM(whole world digital mobile communication system that comprises the second generation) and code division multiple access (CDMA) system and the 3-G (Generation Three mobile communication system) that adopts various CDMA technology) system; (english abbreviation is HS) to Personal Handyphone System; Satellite communication; (english abbreviation is TN) at interior wireless transmission network for WLAN (wireless local area network) and wireless MAN etc.; The present invention does not make any modification to existing physical-layer techniques; Data link layer protocol is that the client layer of data link rules (english abbreviation is DLP) is various voice signals (the 64kb/s signals that comprise the PCM modulation that G.711 common employing defines; Adopt the G.723 compressed voice signal of standard definition; Perhaps the compressed voice signal of gsm system or other voice signal of exploitation in the future; And) such as visual signal; Four primitive are passed through in the service that data link layer (DLP) voice operation layer provides: (English be DL_DATA.request) to data link-data-request; (English is DL_DATA.indication) to data link-data-indication; (English is DL_CONTROL.request) in data link-control-request; Data link-control-indication (English is DL_CONTROL.indication) realizes; Wherein data link-data primitive provides the network control service for the voice service layer provides data delivery service data link-control primitive; At transmitting terminal; If there is voice service to need to send; Then call DL_DATA.request primitive; This primitive comprises a series of parameter; Confirm the value of the relevant field of DLP frame by the parameter of this primitive; At receiving terminal; As packet (DLP bag) in the time of need being sent to the voice service layer; Call DL_DATA.indication primitive; Utilize the parametric solution of this primitive to separate out each field value of DLP frame; If the voice service layer needs data link layer that the control service is provided; Call DL_CONTROL.request and DL_CONTROL.indication primitive, communicating by letter between data link layer and physical layer: physical link-request of data (PL_DATA.request) with physical link-indication (PL_DATA.indication through two primitive) realization.
The DLP data frame structure Frame that is used to transmit voice service that adopts for the present invention shown in Figure 2 is by frame length (FL); Frame length verification (FLC) the reserved field) of field (1 bit; Business type field; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Extension header; Fill length field; The number of frames field; Security Parameter Index; Payload field; The padding data field; Field such as authentication data field and Frame Check Sequence is formed; Security Parameter Index wherein; Padding data field and authentication data field are options; By the authentication of adopting; Cryptographic algorithm is confirmed; The order of message transmission is earlier from left to right in all block diagrams; Then from top to bottom; At first transmit highest significant position in each byte; Leftmost bit in all illustration block diagrams is highest significant position (MSB); Rightmost one is least significant bit (LSB), and the reserved word segment value in all block diagrams is 0.
The DLP control frame structure control frame that Fig. 3 adopts for the present invention is by frame length; Frame length verification field (1 bit reserved field; Be set to 0); Type of service; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Extension header; Fill length field; Number of frames; Fields such as payload information field and Frame Check Sequence field are formed; Frame length wherein; Frame length verification field (1 bit reserved field); Type of service; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Field lengths such as number of frames are the same with the DLP Frame; The header field value is 00000000) for the 0(binary value; The business type field value is that binary system " 10000001 " expression DLP payload is control information; What payload field encapsulated is control information, and type-length-value (TLV) structure is adopted in control information.
The DLP traffic management frame structure traffic management frame that Fig. 4 adopts for the present invention is by frame length; Frame length verification field (1 bit reserved field; Be set to 0); Type of service; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Extension header; Fill length; Number of frames; Fields such as payload information field and Frame Check Sequence field are formed; Frame length wherein; Frame length verification field (reserved field); Type of service; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Field lengths such as number of frames are the same with the DLP Frame; It is 00000000) that header field is the 0(binary value; The business type field value is that binary system " 10000010 " expression DLP payload is a traffic management information, and traffic management information adopts type-length-value (TLV) structure.
Fig. 5 delimits the finite state machine figure that algorithm adopted for the DLP frame that the present invention adopted; The DLP frame of the present invention's definition adopts the frame based on header error verification (english abbreviation is HEC) that is adopted among the ATM that defines among the similar ITU-TI.432.1.1 to delimit describing method; The 31 initial bits that utilization receives are that FL and FLC field bit constitute BCH(31; 16) encoding relation of sign indicating number is realized the frame demarcation of DLP frame; The DLP frame is delimited the description algorithm and is confirmed by finite state machine figure; The finite state machine workflow diagram is following: (1) is in the search attitude; DLP handles 31 bits that receive is pursued FL and the FLC relation that correct format is sought in the bit search; In this state; BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions; In case in 31 bits that receive, find correct candidate FL and FLC matching relationship value; Can suppose and confirm a correct DLP frame; Receive presynchronization (English the is PRESYNC) state that gets into of handling; (2) in the PRESYNC attitude; DLP handles by handling by frame search and realizes the demarcation of DLP frame; Go on foot FL and the FLC correct match value that finds by the bit search according to last one; Can suppose and search a correct DLP frame; Can confirm the FL and the FLC field value of next frame then according to each field relation of this frame; And confirm according to their relation whether they mate; And then next frame; In case confirm that continuously DELTA(DELTA is a parameter; It is one greater than 0 positive integer) individual correct DLP frame; DLP receives to handle and gets into synchronous state; Otherwise; If the FL of a frame and FLC field value do not match subsequently; Get into the search attitude; At this moment, BCH code does not have single-bit error or the 2 bit error correction functions to FL field and FLC field.Get into synchronous state from the search attitude and need search DELTA+1 correct DLP frame continuously; (3) at synchronous state; DLP handles the beginning that can confirm next DLP frame by the FL of a frame and FLC field relation; Can realize the parsing of a frame one frame then; FLC has single-bit error or 2 bit mistake error corrections in this state; If a plurality of bits (surpassing 2 bit mistakes) mistake takes place; Then frame is delimited and was lost efficacy; Framing is handled and is got into the search attitude; And send client server Signal Fail (english abbreviation is SSF) indication for client's adaptation processing; (4) empty DLP frame is participated in frame and is delimited processing; And abandon the sky frame subsequently; It is relevant with the DELTA value that the DLP frame is delimited the robustness of handling, and the present invention advises that the DELTA value is 1.
The empty DLP frame structure that Fig. 6 adopts for the present invention; The purpose of sending empty frame is in order to regulate two internodal speed; The adjacent node that it sends to from a node that it links to each other; Neighbor node is not forwarded to any other place to it after receiving the sky frame; Directly it is abandoned the empty frame of by frame length field (16 bit), frame length check field (15 bit), the reserved field (R field that length is 1 bit, is set to 0), to include only station code and personal code work field length be that the source address sign indicating number of 4 bytes is formed.
Destination address sign indicating number and source address code structure that Fig. 7 adopts for the present invention, the coding structure of source address sign indicating number is identical with the destination address sign indicating number.The length of destination address sign indicating number (english abbreviation is DAC) is 64 bit (8 eight hyte); Be used for identifying the purpose forwarding address of DLP frame in the network that adopts DLP, the DAC field is made up of following 4 parts: national code field, domestic area code, station code, personal code work.Wherein: the national code field length is 16 bits (2 eight hytes); This yard is the first order forwarding label of DLP frame; It is the international long-distance area code in the existing telephone coding system that the present invention defines this field value; Domestic area code field length is 16 bits; This yard is the second level forwarding label of DLP frame; For professional this field value of packet voice of the present invention is the national distance area code in the existing telephone coding system; For mobile packet voice; This field value is mobile network number; The station code field is 16 bits; Identify the service code of certain network node; This yard is the third level forwarding label of DLP frame; Occurrence is specified by Virtual network operator or Internet service provider; The personal code work field length is 16 bits; Indicate certain user's service code; This yard is the fourth stage forwarding label of DLP frame, and concrete UC value is specified by Virtual network operator or Internet service provider.
Fig. 8 goes up the protocol stack sketch map that transmits packet voice for what the present invention adopted in SDH (Synchronous Digital Hierarchy) (SDH); Wherein scheme 8(a) be depicted as the protocol stack structure sketch map that transmits packet voice with Synchronous Transfer Mode; Wherein below DLP; Two kinds of methods of putting into virtual container are arranged; A kind of is that the DLP frame is put into Lower Order Virtual Container; The mode that Lower Order Virtual Container is interleave with byte is advanced higher order virtual container by the multiplexing structure of SDH is multiplexing again; Again according to multiplex section; The order of regenerator section and photoelectricity transmission section transmits, and then extracts the DLP frame by opposite order at receiving terminal; Another kind is that the synchronous payload that higher order virtual container is advanced in the direct mapping of DLP frame is sealed (english abbreviation SPE), and again according to multiplex section, the order of regenerator section and photoelectricity transmission section transmits, and then extracts the DLP frame by opposite order at receiving terminal.Figure 8(b) be that the present invention is used for the protocol stack structure sketch map that the subclass Synchronous Transfer Mode transmits packet voice; In this mode, only the DLP frame is put into Lower Order Virtual Container (VC11) mode that again Lower Order Virtual Container interleave with byte advances the subclass multiplex section by the subclass multiplexing structure of SDH is multiplexing; Order through regenerator section and photoelectricity transmission section transmits, and then extracts the DLP frame by opposite order at receiving terminal.
The protocol stack sketch map that on PDH (Pseudo-synchronous Digital Hierarchy) PDH, transmits speech that Fig. 9 adopts for the present invention; The present invention promptly handles voice signal to voice signal as the upper strata of DLP as the client layer of DLP frame; Wherein below DLP; Two kinds of methods of putting into virtual container are arranged; A kind of is that the DLP frame is put into the PDH low order channel; The mode that Lower Order Virtual Container is interleave with byte is advanced higher order virtual container by the sign indicating number type of PDH is multiplexing; Order according to the photoelectricity transmission section transmits again, then extracts the DLP frame by opposite order at receiving terminal; Another kind is that the DLP frame is directly shone upon higher order path, and the order according to the photoelectricity transmission section transmits again, then extracts the DLP frame by opposite order at receiving terminal.
The protocol stack sketch map that on Ethernet, transmits speech that Figure 10 adopts for the present invention; At transmitting terminal; Voice signal is encapsulated in the DLP frame; Then the DLP frame is encapsulated in the ethernet mac frame; The ethernet mac frame sends in the physical interface of various speed of IEEE802.3 definition subsequently; Physical layer comprises all Ethernets of IEEE 02.3 definition; The concrete 10G Ethernet that comprises IEEE 02.3 Ethernet 802.3u Fast Ethernet 802.3z gigabit Ethernet 802.3ae definition; The present invention does not change to ethernet technology; Carry out opposite processing at receiving terminal; MAC representes that MAC sublayer representes that physical layer signaling sublayer representes that extra cell interface sublayer representes that physical medium inserts sublayer and representes that Media Dependent Interface sublayer representes that physical layer medium dependent representes that Physical Coding Sublayer representes the Media Independent Interface sublayer among the figure; GMII representes that gigabit Media Independent Interface sublayer representes that 10G Media Independent Interface sublayer representes 64B/66B coding sublayer, and 8B/10B representes 8B/10B coding sublayer, and WIS representes the Wide Area Network interface sublayer.
Figure 11 goes up the protocol stack sketch map that transmits speech for what the present invention adopted at wavelength division multiplexing (WDM); Voice signal is positioned on the data link layer DLP; The voice service signal is handled as the client of DLP; Data link layer is a wavelength-division multiplex system for data link rules (DLP) physical layer of the present invention's definition, and wavelength division multiplexing comprises all different wave lengths that adopt SDH/SONET or ethernet frame structure.
The optical transfer network (OTN) that Figure 12 adopts for the present invention is gone up the data link rules of protocol stack sketch map of transmission speech for the present invention's definition; It is positioned at data link layer; Voice service is positioned at the client layer of DLP; Physical layer is an optical transfer network; Packet voice at first is encapsulated in the DLP frame; The DLP frame is encapsulated among the OPUk of optical transfer network more then; Then according to the optical channel data segment; Optical channel; Optical multiplexing section; The sequential processes of optical transmission section; Carry out opposite processing at receiving terminal; OPUk is a k class optical channel load cell among the figure; ODUk representes k class Optical Channel Data Unit-k, and TUkV representes k class part of standards Optical Channel Transport Unit-k, and OTUk representes that the complete standardization Optical Channel Transport Unit-k of k class representes the global function optical channel; OChr representes to simplify the function optical channel, and OMSn representes optical multiplexing section, and OPSn representes the optical physics section; OTSn representes optical transmission section, and OTM-n.m representes optical transport module.
The WLAN (wireless local area network) (english abbreviation is WLAN) that adopts for the present invention shown in Figure 13 goes up the protocol stack sketch map that transmits speech; The data link layer protocol of the present invention's definition---data link rules (DLP) are positioned at the MAC(medium access control sublayer of IEEE 802.11 definition) on; Physical layer (PHY) comprises all physical layer interfaces of IEEE 802.11 definition; Specifically comprise :IEEE 802.11a(5GHz), IEEE 802.11b(2.4GHz), IEEE 802.11g(2.4GHz); MAC representes medium access control among the figure, and PHY representes physical layer.
Wireless MAN (english abbreviation is WMAN) for the present invention's employing shown in Figure 14 is gone up the protocol stack sketch map that transmits speech; The data link layer protocol of the present invention's definition---data link rules (DLP) are positioned at the MAC(medium access control sublayer of IEEE 802.16 definition) on; Physical layer (PHY) is all physical layer interface IEEE 802.16a(2-11GHz of IEEE 802.16 definition), IEEE 802.16c(10-66GHz); MAC representes medium access control among the figure, and PHY representes physical layer.
Shown in Figure 15 is the (X that uses proposed by the invention < > 43 <> + 1) sketch map of multinomial scrambler and descrambling code; D1 representes the 1st to 43 of register among the figure to D43; The part that empty frame fences up is represented one 43 bit shift register; Garden circle part is represented an XOR circuit; According to the logical relation among the figure; At transmitting terminal, can accomplish the scrambler function to the DLP frame from " the data flow input before the scrambler " to " the data flow output behind the scrambler "; At receiving terminal, can accomplish the descrambling code function to " the data flow output behind the descrambling code " from " input of scrambler data flow "; The also shift register that can from D1 to D43, be shifted, but corresponding logical relation also should adjust.
Figure 16 is that speech packet of the present invention transmits the net sketch map; Dark round spot is represented fringe node among the figure; White circle is represented core node; After network edge node inserts the user; Which country telephone number according to both call sides belongs to; Which area; Confirm that voice service is to belong to local call; Thereby National calls still is an international long-distance telephone confirms the business type field value in the DLP frame header; And confirm DLP frame destination address sign indicating number and source address code field according to telephone number; Simultaneously for information about like signaling information or speech packet signal map in the payload field of DLP frame; To whether signal such as is encrypted at the value of confirming other field; Whole network only need utilize the destination address sign indicating number in the DLP frame header to realize the forwarding of packet voice signal; Transmit when handling; Search the national code in the DLP frame destination address sign indicating number at first in regular turn; Domestic area code; Station code; Personal code work; The present invention adopts longest match principle that the DLP frame is transmitted processing; In case find that a certain field value of destination address sign indicating number of DLP frame is different with local node corresponding field value; Then stop search, directly transmit this packet.
Shown in Figure 17 is traffic engineering sketch map of the present invention; There are many transfer paths in Guangzhou among the figure to Beijing; Under common situation; Flow is through Guangzhou-Wuhan-path, Pekinese to the Pekinese in Guangzhou; Shown in solid arrow line among the figure, if but Guangzhou-Wuhan-circuit appearance in Beijing is congested, and Guangzhou-Shanghai-Pekinese's line idle; Can transfer to service traffics on Guangzhou-Shanghai-Beijing circuit this moment, shown in the dotted arrow line among the figure.
Embodiment
Imagination proposed by the invention is mainly used in user side integrated access equipment (but access device of any or several business in the incoming voice, data, video traffic), the voice exchange based on packet switching, various switch router (inserting switch router, edge or convergence router, core or high-end router), the high/medium/low end Ethernet switch based on packet switch, multi-service transport platform and any InterWorking Equipment relevant with packet voice etc.Figure 18 is one and calls out realization example.Being provided with A, two terminals of B is connected with D with fringe node (aggregation node) C of DLP network respectively; C and D are two fringe nodes with the network cloud of DLP technology formation; The DLP network cloud can be a LAN; Also can be province's net or national network or international network; Here supposition is a national net; The A terminal is in Wuhan; The B node is in Shanghai; A makes a call to B; The telephone number of supposing A is 027-01234567; The telephone number of B is 021-12345678; There are a plurality of links in Wuhan and Shanghai; Can pass through Wuhan-Hefei-Nanjing-Shanghai; Also can pass through Wuhan-Nanchang-Hangzhou-Shanghai realization A is connected with B's; After A makes a call; Node C confirms whether the identity of A is legal; If confirm it is validated user; Specify a temporary identity number such as 86-27-12345678 to A so; C sends call request by the national backbone network node of signaling to Wuhan simultaneously; Under the default situation the national backbone network node in Wuhan along Wuhan-Hefei-Nanjing-Shanghai pointwise request of making a call; Until be positioned at the terminal B in Shanghai; If B is in idle condition; And B call accepted; Send calling by signaling to A and accept indication; Then; Node D also specifies a temporary identity number to B as is 86-21-01234567; Here 86 is national code; The national code of expression China; 21 is the national distance district sign indicating number in area, Shanghai; 0123 is the code of node D; The temporary number of 4567 expression user particular users; Apparatus for network node on Wuhan-Hefei-Nanjing-Shanghai circuit is set up the route of a connection subsequently; If network finds that this route breaks down in the communication process; When perhaps Network is too busy, can makes calling connect link by traffic engineering and be switched on the circuit in Wuhan-Nanchang-Hangzhou-Shanghai.A transmits speech to the B (A that speaks to B) time speech packet that produces destination address be that to be source address terminal transmit speech to the A (B that speaks to A for the number of number self of B) time A number be the destination address of speech packet; After setting up route; At each node a routing table is arranged; Node C finds the packet (DLP frame of self terminal A) the destination address sign indicating number do not belong to local; Directly transmit these packets to higher level's link; The backbone network node in same Wuhan is at first searched the national code of these packets; Discovery is domestic phone; Then searching domestic area code, find not belong to Wuhan, is Shanghai; So just no longer these packets are handled; It is transmitted these packets on Pekinese's link, find that toward the next node in Shanghai be Hefei, like this packet is forwarded to the Hefei node.The Hefei node is handled subsequently equally.The core node in Shanghai finds that these packets belong to Shanghai; But not this node; Node address sign indicating number according to these packets is forwarded to corresponding nodes D so; Node D is according to these packets of sequential processes of national code, domestic area code, node sign indicating number; Discovery is the packet of this node; According to personal code work packet is transmitted to terminal B then; After the terminal receives packet; Carry out relevant processing; Be reduced to voice signal, conversation is accomplished in back A or the B terminal either party and can be sent and stop connecting signaling so that the end call connection.

Claims (15)

1. voice over packet method; It is characterized in that; Through defining the data link layer protocol of data link rules by name; The english abbreviation of data link rules is that DLP is by frame length field; Frame length verification field; It is the reserved field of 1 bit; Business type field; The topology field; Secure fields; The destination address code field; The source address code field; Header field; Fill length field; The number of frames field; The Security Parameter Index field; Payload field; The Frame Check Sequence field is formed; On the one hand voice service is handled as the client layer of the data link layer protocol of said definition; Realize the directly adaptive of voice service and various physical layers; Thereby realize the direct transmission of packet voice business on physical layer and two layers of packetized communication of transmitting and exchanging the realization voice service of voice service; On the other hand the IP data; Digital Television; Ethernet mac frame circuit simulation signal is handled as the client layer of the data link layer protocol of said definition; Utilize DLP to realize various physical layers directly adaptive of internet and standards body's definition both at home and abroad; And packet video business and various physical layers is directly adaptive; Thereby realization existing telephone network; The integration of three networks of IP data communications net and TV network; In the unified whole communication network of data link layer; Make existing telephone network; Data communication network and TV network are smoothly transitted into unified carrier class public network of future generation; Voice service is as just the part of the upper-layer service of the data link layer protocol carrying of said definition; Data link layer protocol with said definition is realized the directly adaptive of voice service layer and various physical layers; Data link layer is communicated by letter with the voice service interlayer; Physical layer realizes through primitive with communicating by letter of data link interlayer; When needing conversation; At first utilize relevant implementing signalling both call sides to call out establishment of connection; Periodically export the voice signal of certain-length in the communication process; The calling that comes the finished call both sides to set up with signaling during end of conversation connects; The termination that call out to connect is initiated by either party of both call sides; Call out and connect the signaling information of setting up and stopping producing; The packet voice signal that produces in the communication process all transmits through the data link layer protocol frame of said definition; Utilize destination address and the source address of the existing telephone number of both call sides as speech packet; Telephone number with both call sides realizes that as the destination address sign indicating number and the source address sign indicating number of the data link layer protocol frame of said definition two layers of voice signal are transmitted and exchange; The security mechanism of utilizing the data link layer protocol of said definition to provide guarantees that the safety of packet voice business in the network transport process transmits; The Frame that defines in the data link layer protocol with said definition sends the miscellaneous service data from the upper strata; Realize that with the control frame of the data link layer protocol of said definition definition the Topology Discovery layer protection that comprise of network switch; Fault management; Configuration management and performance management are realized the traffic engineering management of network in interior network control management with the adopted traffic management frame of data link layer agreement of said definition.
2. method according to claim 1; It is characterized in that; The packet voice Business Processing is divided into three protocol hierarchies; Be followed successively by physical layer from top to bottom; Data link layer and voice service layer; Wherein physical layer is that the various physics that comprise wired and wireless domestic and international standards body definition transmit link; Data link layer is the data link layer protocol of said definition; The voice service layer is handled as the client layer signal of the data link layer protocol of said definition; Data link layer protocol with said definition is realized the directly adaptive of voice service layer and various physical layers; The service that data link layer provides for the packet voice operation layer is adopted and is not confirmed formula information transfer service pattern; The data of sending are not done any affirmation formula operation; Data link layer is passed through " data link-data-request; English is DL_DATA.request " for the service that the voice service layer provides; " data link-data-indication; English is DL_DATA.indication "; " data link-control-request; English is DL_CONTROL.request "; " data link-control-indication; English is DL_CONTROL.indication " 4 primitive are realized; Physical layer is that two primitive are passed through in the service that data link layer provides: " physical link-data-request; English is PL_DATA.request "; " physical link-data-indication; English is PL_DATA.indication " realize; At transmitting terminal; When the voice service layer has data to send; Call data link-data-request DL_DATA.request primitive primitive and comprise series of parameters; These parameters are used for confirming each field of data link layer protocol frame header of said definition and the value of payload field; At receiving terminal; The entity activates the accepting state of DL_DATA.indication primitive primitive indication incoming frame and the value of each field of input DLP frame when the DLP client entity will receive data; If the speech layer needs DLP that network control function is provided; Call data link control primitive; Control primitive has two: one is " data link-control-request; English is DL_CONTROL.request " primitive; One is " data link-control-indication; English is DL_CONTROL.indication " primitive; These two primitive comprise series of operation sign indicating number and parameter; Can provide through these two primitive and to comprise that discovering network topology layer protection switch; Configuration management; Fault management; Performance management is at interior network control function; At transmitting terminal; Need when sending to physical entity, data link layer activate PL_DATA.request primitive by as data; Will be when physical entity sends DLP at receiving terminal as data; Activate PL_DATA.indication primitive, each primitive semantic as follows:
Figure FSB00000641683200011
DL_DATA.request primitive contains 9 parameters; The connotation of each parameter is respectively: DestinationAddressCode representes the destination address sign indicating number; The DestinationAddressCode parameter is confirmed the destination address of DLP frame according to conversation one side's telephone number; With generating the destination address code word segment value that sends in the DLP frame header; SourceAddressCode representes the source address sign indicating number; The SourceAddressCode parameter is used for confirming DLP frame source address according to conversation one side's telephone number; With generating the source address code word segment value that sends in the DLP frame header; The client signal that DLPServiceData indicates to send is whole voice packets; Send payload word segment value in the DLP frame with generating; The total length of the definite DLP frame that will send of FrameLength parameter; The type of service that ServiceType parameter indication DLP client layer sends; It sends business type field value in the DLP frame header with generating; The Security parameter indicate whether to the DLP client signal encrypt, authentication processing; The DLP entity confirms to send the security word segment value in the DLP frame header with it; The indication of FrameSequenceNumber parameter will be sent the number of frames of frame; English abbreviation is FSN; The DLP entity confirms to send the FSN field value in the DLP frame header with it; The network topology of NetworkTopology parameter indication DLP node; The DLP entity sends topological field value in the DLP frame header with it; The SPI parameter is an option; SPI is the english abbreviation of Security Parameter Index; The security association that is used for confirming that the voice signal is encrypted, sets up at the communication two ends during authentication processing; Be used for confirming the Security Parameter Index field value in the DLP frame
Figure FSB00000641683200022
The DL_DATDA.indication primitive parameter semantic as follows: DestinationAddressCode representes the destination address sign indicating number; The DestinationAddressCode parameter is confirmed the destination address code word segment value in the input DLP frame header; SourceAddressCode representes the source address sign indicating number; The SourceAddressCode parameter is confirmed the source address code word segment value in the input DLP frame header; DLPServiceData confirms input DLP frame payload word segment value; The accepting state of ReceptionStatus indication incoming frame; When the Frame Check Sequence FCS of incoming frame field does not make a mistake; The value of ReceptionStatus is FCS_ERROR_FREE; Otherwise; When incoming frame makes a mistake; Then the ReceptionStatus value is FCS_ERROR; The business type field value of ServiceType parameter indication input DLP frame; The FrameLength parameter is confirmed the total length of input DLP frame; Whether Security parameter indication input DLP frame has carried out encryption, authentication processing; The Security field value of its indication input DLP frame; The FrameSequenceNumber parameter is indicated the FSN of described incoming frame; Topological field value in the NetworkTopology parameter indication input DLP frame; The SPI parameter is used to refer to the Security Parameter Index field value of said incoming frame
The form of (3) data link-control-request DL_CONTROL.request primitive data link-control-request DL_CONTROL.request primitive is the DL_CONTROL.request(command code; Solicit operation ordered series of numbers table); Wherein command code comprises the Topology Discovery request; English is TOPOLOGY_DISCOVERY_REQ layer protection switching request; English is L2PS_REQ; Configuring request; English is CONFIGURATION_REQ; The fault inquiry request; English is FAULT_INQUIRY_REQ; The performance queries request; English is PERFORMANCE_INQUIRY_REQ; The concrete operations ordered series of numbers table of each command code is following: the solicit operation number of Topology Discovery request TOPOLOGY_DISCOVERY_REQ command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; The solicit operation number of Topology Discovery claim frame payload data layer protection switching request L2PS_REQ command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames layer protection switching request frame payload data; The solicit operation number of configuring request CONFIGURATION_REQ command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Configuring request frame payload data; The solicit operation number of fault inquiry request FAULT_INQUIRY_REQ command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Fault inquiry claim frame payload data; The solicit operation number of performance queries request PERFORMANCE_INQUIRY_REQ command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Performance queries claim frame payload data; Destination address sign indicating number in each operand; The source address sign indicating number; Type of service; The implication of number of frames parameter is the same with data link-data-request primitive corresponding parameters implication
(4) data link-control-indication DL_CONTROL.indication
The form of data link-control-indication DL_CONTROL.indication primitive is the DL_CONTROL.indication(command code; Indication operand tabulation); Wherein command code comprises Topology Discovery response indication; English switching for the protection of TOPOLOGY_DISCOVERY_RESPONSE_IND layer responds indication; English is L2PS_RESPONSE_IND; The configuration response indication; English is CONFIGURATION_RESPONSE_IND; Fault inquiry response indication; English is FAULT_INQUIRY_RESPONSE_IND; Performance queries response indication; English is PERFORMANCE_INQUIRY_RESPONSE_IND; The concrete operations ordered series of numbers table of each command code is following: the indication operand of Topology Discovery response indication TOPOLOGY_DISCOVERY_RESPONSE_IND command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; The indication operand that response indication L2PS_RESPONSE_IND command code is switched in the protection of Topology Discovery response frame payload data layer comprises the destination address sign indicating number; The source address sign indicating number; Type of service; The response frame payload data is switched in the protection of number of frames layer; The indication operand of configuration response indication CONFIGURATION_RESPONSE_IND command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Configuration response frame payload data; The indication operand of fault inquiry response indication FAULT_INQUIRY_RESPONSE_IND command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Fault inquiry response frame payload data; The indication operand of performance queries response indication PERFORMANCE_INQUIRY_RESPONSE_IND command code comprises the destination address sign indicating number; The source address sign indicating number; Type of service; Number of frames; Performance queries response frame payload data; Destination address sign indicating number in each operand; The source address sign indicating number; Type of service; The implication of number of frames parameter is the same with data link-data-indication corresponding parameters implication
(5) physical link _ request of data PL_DATA.request
PL_DATA.request(Userdata) primitive has only parameter of user data, and the English of user data is Userdata,
(6) physical link _ data indication PL_DATA.indication
PL_DATA.indication(Userdata) primitive has only parameter of user data, and the English of user data is Userdata.
3. method according to claim 1; It is characterized in that; Professional directly on physical layer, the transmission of packet voice need not through network layer and above protocol hierarchy; Physical layer is any wired or radio physical link that domestic and international standards body confirms; These physical links comprise whole speed ranges that G.702 ITU-T defines PDH definition from the Lower Order Virtual Container to the higher order virtual container and the wavelength division multiplexing of whole wavelength speed of SDH of whole speed ranges of Synchronous Transfer Mode series definition; English abbreviation is WDM; And optical transfer network; English abbreviation is the Ethernet of whole speed ranges of OTN 02.3 definition; The 10G Ethernet of gigabit Ethernet definition of Fast Ethernet definition that comprises the Ethernet definition of IEEE802.3 definition; Various Digital Subscriber Line; English abbreviation is xDSL; The various WLAN (wireless local area network) that comprise various mobile communication link 802.11 definition of all CDMA that define in the 3G (Third Generation) Moblie standard of gsm GSM and International Telecommunication Association formulation; English abbreviation is the private wireless network of WLAN link definition, the various wireless MAN MAN links of IEEE802.16 definition.
4. method according to claim 1 is characterized in that, with the data link layer protocol of said definition --- and the data link rules realize the integration of three networks of speech, IP data and television network; It is that certain specific coding that relies on the DLP protocol frame to begin the bit information formation in the certain-length most concerns that promptly constituting certain encoding relation realizes that the frame of the data link layer protocol frame of said definition is delimited, frame length of definition in the data link layer protocol frame of said definition, and English is FrameLength; The field of being abbreviated as FL is used for defining a frame length verification with the total length of byte form sign DLP protocol frame, and English is FrameLengthCheck; The field of being abbreviated as FLC is used for frame length field is carried out verification and carried out single-bit or 2 bit mistake correction process, and this particular verified encoding relation that utilizes these two field bit to constitute is simultaneously realized the frame demarcation of this data link layer protocol frame, defines a type of service; English is ServiceType, realizes multiple services encapsulation thereby the field of being abbreviated as ST is used for identifying the type of service of payload field encapsulation, and the regulation different business types has different priority simultaneously; Define a topological field, English is NetworksTopology, and the field of being abbreviated as NT is come the topological classification of marked network node; Define a safety, English for the field of Security whether be used for identifying to the payload of encapsulation encrypt, authentication processing, define the destination address sign indicating number of a classification; English is DestinationAddressCode, is abbreviated as DAC and source address sign indicating number, and English is SourceAddressCode; The field of being abbreviated as SAC identifies the two layers of destination address and the source address of encapsulation business data packet, defines an extension header, and English is ExtensionHeader; Whether the field of being abbreviated as EH identifies carries out extension process to payload, defines one and fills length field and be used for being illustrated in the byte form and need fill the length of filling when handling, and defines a number of frames; English is FrameSequenceNumber, and the field of being abbreviated as FSN is used for identifying the transmission sequence of DLP frame, defines a Security Parameter Index; English is SecurityParameterIndex; The security association that the communication two ends were set up when the field of being abbreviated as SPI identified upper layer data carried out authentication, encryption define a payload, and English encapsulates the miscellaneous service from the upper strata for the field of Payload; Define a Frame Check Sequence; English is FrameCheckSequence, is abbreviated as the field of FCS and comes described data link layer protocol frame is carried out verification, and one type of Frame of definition sends the miscellaneous service data from the upper strata in the data link layer protocol frame of said definition; Definition traffic management frame is realized the traffic engineering management of network; The definition control frame realize network comprise that Topology Discovery, 2 layers of protection are switched, the network control management of fault management, configuration management and performance management, these three kinds of dissimilar frames are identified by the type field in the data link layer protocol frame of said definition, and are specific as follows: definition frame length FL field length is 16 bits; Definition frame length check field FLC length is 15 bits; Make FL and FLC field bit constitute BCH(31,16) sign indicating number, BCH is the english abbreviation of BCH Bose-Chadhuri-Hocquengham's sign indicating number; This relation of utilizing the DLP frame realizes the frame demarcation of DLP frame; BCH(31,16) generator polynomial of sign indicating number is G(x)=x <sup > 15 </sup>+x <sup > 11 </sup>+x <sup > 10 </sup>+x <sup > 9 </sup>+x <sup > 8 </sup>+x <sup > 7 </sup>+x <sup > 5 </sup>+x <sup > 3 </sup>+x <sup > 2 </sup>+x+1, initialization value is 0; Here the corresponding highest significant position of x <sup > 15 </sup>; English abbreviation is MSB, the corresponding least significant bit of x <sup > 0 </sup>, and english abbreviation is LSB; It is that the specific coding that FL field and FLC field constitute concerns the demarcation that realizes the DLP frame that the DLP frame utilizes DLP frame front 31 bits; The DLP frame is delimited process and is realized that according to finite state machine finite state machine comprises three states: the search attitude, and English is HUNT, presynchronization attitude; English is PRESYNC, synchronous state; English is three states of SYNC, and the finite state machine workflow diagram is following: (1) in the search attitude, DLP handles 31 bits that receive is pursued FL and the FLC relation that correct format is sought in the bit search; In this state; BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions, in case in 31 bits that receive, find correct candidate FL and FLC matching relationship value, can suppose and confirm a correct DLP frame; Receive to handle and get into the presynchronization presync state; (2) in the PRESYNC attitude, DLP handles by handling by frame search and realizes the demarcation of DLP frame going on foot FL and the FLC correct match value that finds by the bit search according to last one; Can suppose and search a correct DLP frame; Confirm the FL and the FLC field value of next frame then according to each field relation of this frame, and confirm according to their relation whether they mate, and then next frame; In case confirm DELTA correct DLP frame continuously; DELTA is a parameter, DELTA be one greater than 0 positive integer, DLP receives to handle and gets into synchronous state; Otherwise; If the FL of a frame and FLC field value do not match subsequently, get into the search attitude, at this moment; BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions; Get into synchronous state from the search attitude and need search DELTA+1 correct DLP frame continuously, (3) at synchronous state, DLP handles the beginning of confirming next DLP frame by the FL of a frame and FLC field relation; Realize the parsing of a frame one frame then; FLC has single-bit error or 2 bit mistake error corrections in this state, if a plurality of bit mistakes take place, promptly surpasses 2 bit mistakes; Then frame is delimited and was lost efficacy; Framing is handled and is got into the search attitude, and sends client server Signal Fail SSF indication to client's adaptation processing, and the empty frame of (4) DLP is participated in frame and delimited processing; And abandon the sky frame subsequently; It is relevant with the DELTA value that the DLP frame is delimited the robustness of handling, and the DELTA value is 1, is a reserved field that length is 1 bit behind FLC; Reserved field gives in the future and uses; Reserved field is set to 0 always, and definition business type field length is 8 bits, can discern 2 <sup altogether > 8 </sup>=256 kind of type of service; Wherein highest significant position is that represented in 0 o'clock to encapsulate is that the general data of low priority is professional; Highest significant position is to represent that the business of DLP payload field encapsulation was the real time business that comprises phone, real-time video traffic of high priority at 1 o'clock, and the priority of DLP Business Processing order from high to low is followed successively by: control frame ＞ traffic management frame ＞ real time business ＞ IPv4/IPv6 data service, and the business of high priority is at first handled in the formation of DLP network processes; The usage of business type field is as shown in table 1
The usage of table 1. business type field
The binary value of business type field Usage 00000000～00000011 Keep 00000100 IP v4 data 00000101 Move IP v4 data 00000110 IP v6 data 00000111 Move IP v6 data 00001000～00111111 Keep and give other data, services 01000000 The 10Mbps Ethernet 01000001 The 100Mbps Ethernet 01000010 The 10/100Mbps Ethernet 01000011 Gigabit Ethernet 01000100～01111111 Keep 10000001 Control frame 10000010 The traffic management frame
10000011 Fixedly local telephony service in real time, local telephone 10000100 Fixedly National calls is professional in real time 10000101 Fixedly international long-distance telephone is professional in real time 10000110 In real time fixing local visual telephone service, local telephone 10000111 Real-time fixedly national distance visual telephone service 10001000 Real-time fixedly international long-distance visual telephone service 10001001 Landline telephone is called out local mobile service, local telephone in real time 10001010 Landline telephone is called out the National calls business that moves in real time 10001011 Landline telephone is called out the international long-distance telecommunications service that moves in real time 10001100 Landline telephone is called out local mobile video telephone business in real time 10001101 Landline telephone is called out and is moved the national distance visual telephone service in real time 10001110 Landline telephone is called out the international long-distance visual telephone service that moves in real time 10001111 Move domestic voice service in real time 10010000 Move international voice service in real time 10010001 Move domestic visual voice service in real time 10010010 Move international visual voice service in real time 10010011 Real-time video traffic, the broadcast type television services 10010100 Real-time video traffic, the unicast type television services 10010101 Real time business based on IP v4 10010110 Real time business based on IP v6 10010111 Based on the real time business that moves IP v4 10011000 Based on the real time business that moves IP v6 10011001 G.702PDH circuit emulation service: asynchronous circuit 1544 kilobits/second 10011010 G.702PDH circuit emulation service: asynchronous circuit 2048 kilobits/second 10011011 G.702PDH circuit emulation service: asynchronous circuit 6312 kilobits/second 10011100 G.702PDH circuit emulation service: asynchronous circuit 8448 kilobits/second 10011101 G.702PDH circuit emulation service: asynchronous circuit 4368 kilobits/second 10011110 G.702PDH circuit emulation service: asynchronous circuit 4736 kilobits/second 10011111 G.702PDH circuit emulation service: synchronous circuit 1544 kilobits/second 10100000 G.702PDH circuit emulation service: synchronous circuit 2048 kilobits/second 10100001 G.702PDH circuit emulation service: synchronous circuit 6312 kilobits/second 10100010 G.702PDH circuit emulation service: synchronous circuit 8448 kilobits/second 10100011 G.702PDH circuit emulation service: synchronous circuit 4368 kilobits/second 10100100 G.702PDH circuit emulation service: synchronous circuit 4736 kilobits/second 10100101 G.702PDH circuit emulation service :139264 kilobits/second 10100111 G.707SDH circuit emulation service: C-11,1648 kilobits/second 10101000 G.707SDH circuit emulation service: C-12,2224 kilobits/second 10101001 G.707SDH circuit emulation service :C-2,6832 kilobits/second 10101010 G.707SDH circuit emulation service :C-3,8384 kilobits per seconds 10101011 G.707SDH circuit emulation service :C-4,149760 kilobits per seconds 10101100 G.707SDH circuit emulation service :VC-11,1664 kilobits per seconds 10101101 G.707SDH circuit emulation service :VC-12,2240 kilobits/second 10101110 G.707SDH circuit emulation service: VC-2,6848 kilobits/second 10101111 G.707SDH circuit emulation service: VC-3,48960 kilobits/second 10110000 G.707SDH circuit emulation service: VC-4,150336 kilobits/second
10110001 G.707SDH circuit emulation service :TU-11,1728 kilobits per seconds 10110010 G.707SDH circuit emulation service :TU-12,2304 kilobits per seconds 10110011 G.707SDH circuit emulation service: TU-2,6912 kilobits per seconds 10110100 G.707SDH circuit emulation service: TU-3,9152 kilobits per seconds 10110101 G.707SDH circuit emulation service: AU-3,50304 kilobits per seconds 10110110 G.707SDH circuit emulation service: AU-4,150912 kilobits per seconds 10110111 G.707SDH circuit emulation service :STM-0,1480 kilobits/second 10111001 G.707SDH circuit emulation service :STM-I/OC-3c, 155520 kilobits/second 10111010 G.707SDH circuit emulation service :STM-4OC-12c, 600080 kilobits/second 10111011 G.707SDH circuit emulation service :STM-16, /OC-48c 2488320 kilobits/second 10111100 DVB, MPEG-1 transmits bit stream 10111101 DVB, MPEG-2 transmits bit stream 10111110 DVB, MPEG-4 transmits bit stream 10111111～11111111 Keep and give other real time business
Defining topological field length is 4 bits; Wherein binary value " 0001 " is represented bus structures; Binary value " 0010 " expression star structure; Binary value " 0011 " expression tree topology; Binary value " 0100 " expression ring topology; Binary value " 0101 " expression grid Mesh topological structure; Other value keeps to give in the future to be used; For ring topology and network topology 50 milliseconds of protection switch functions are provided; Definition secure fields length is 4 bits; Wherein binary value " 0000 " expression is not carried out any encryption to upper-layer service; Authentication processing; Binary value is represented carry out encryption from the business datum on upper strata for " 0001 "; Binary value " 0010 " expression is carried out authentication processing to the business datum from the upper strata; Binary value " 0100 " expression is to encrypting and authentication processing from the business datum on upper strata; Other value keeps in the future to be used; Definition destination address code length is 64 bits; Definition source address code field length is 64 bits; The destination address sign indicating number adopts identical hierarchy with the source address sign indicating number; All by national code; English is Country Code; Be abbreviated as CC; Domestic area code; English is National Region Code; Be abbreviated as NRC; Station code; English is Node Area Code; Be abbreviated as NAC and personal code work; English is User Code; Being abbreviated as UC field forms; Each field length is 16 bits, and wherein national code is represented the first order forwarding label of upper-layer service, and domestic area code is represented the second level forwarding label of upper-layer service; Station code is represented the third level forwarding label of upper-layer service; Personal code work is represented the fourth stage forwarding label of upper-layer service, and definition header field length is 8 bits, and wherein binary value does not have extension header for " 00000000 " expression; Other value keeps in the future to be used; It is 8 bits that length field length is filled in definition, is used for identifying the length that the DLP payload field is filled with the byte form, and definition frame sequence-number field length is 16 bits; Be used for the Speech frame that sends is carried out sequence mark; The number of frames field value carries out sequence mark since 0 to the packet voice that sends, up to maximum, if FSN reaches maximum; Send processor and remove the value of register; And count again since 0, can transmit according to correct order to guarantee packet voice; Send; Receive and handle, FSN also can provide anti-playback simultaneously; Definition Security Parameter Index field length is 16 bits; The Security Parameter Index field is optional, and its value is arbitrarily, is used in combination the security association that identifies this DLP frame uniquely with the destination address sign indicating number; English is Security Association; Be abbreviated as SA, wherein the SPI value is that 0 reservation is given local; Specific implementation is used, and metric 1～255 is kept to using in the future by IANA; IANA is the english abbreviation of Intemet Assigned Numbers Authority; Other value is confirmed according to the encrypting and authenticating algorithm that adopts that by communicating pair definition payload field length is 0～5535 byte, sends cycle and voice compression algorithm and whether the encrypting and authenticating processing is relevant for its length of voice service and the speech of employing; Definition padding data field length is 0～255 byte; The padding data field is optional, and occurrence is relevant with the cryptographic algorithm of employing, and its value is confirmed by the encrypting and authenticating algorithm; Define the verify data that generates when an authentication data field is deposited authentication processing; Authentication data field is optional, and its value is relevant with the identifying algorithm that adopts, and its value is confirmed to generate by concrete identifying algorithm; Definition frame verification sequence Frame Check Sequence field length is 32 bits; Be used for the payload of part header fields content and encapsulation in the data link layer protocol frame of said definition is carried out verification, FCS verification scope comprises: first bit of business type field begins from the DLP frame, until the ending of DLP frame; Specifically comprise business type field; The topology field; Secure fields; The destination address sign indicating number; The source address sign indicating number; Extension header; Fill length field; Number of frames; Security Parameter Index; Payload; Padding data; The authentication data field bit stream carries out checking treatment, and checking algorithm adopts the CRC-32 of 802.32002 editions definition of IEEE: generator polynomial is G(x)=x < > 32 <> +x < > 26 <> +x < > 26 <> +x < > 23 <> +x < > 22 <> +x < > 16 <> +x < > 12 <> +x < > 11 <> +x < > 10 <> +x < > 8 <> +x < > 7 <> +x < > 5 <> +x < > 4 <> +x < > 2 <> +x < > 1 <> +1, here, x < > 32 <> Corresponding MSB position, and x < > 0 <> Corresponding LSB position if the FCS mistake takes place the DLP frame, abandons the DLP frame that makes a mistake, if some field value can not be discerned; The FCS mistake perhaps occurs, then think invalid data link layer protocol frame, invalid frame will be dropped; Do not notify transmit leg, also do not produce any action, invalid frame comprises:
(1) received frame generation FCS mistake is the unmatched DLP frame of FCS
(2) received frame length is less than the frame of 30 bytes
(3) frame that can not discern of business type field
(4) frame that can not discern of other field of header
If the upper strata does not have business datum to need to send; Need fill processing in the traffic frame gap; Promptly send empty frame; The purpose of sending empty frame is in order to regulate two internodal speed; Empty frame sends to its adjacent nearest node from a node; Neighbor node is not forwarded to any other place to it after receiving the sky frame; Directly it is abandoned; Do not notify transmit leg yet; The content of the empty frame of filling that sends at frame gap comprises frame length field, frame length check field, to be set to 0 length be the reserved field of 1 bit always and include only the source address sign indicating number that station code and personal code work field in the source address sign indicating number amount to 4 bytes; At transmitting terminal; The DLP frame that has encapsulated voice service is encapsulated into various physical layer frame payload field must carries out scrambler before; Before any processing of receiving terminal, at first carry out descrambling code to described data link layer protocol frame; Could be for further processing to the DLP frame behind the descrambling code; Scrambler and descrambling code adopt motor synchronizing scrambler/descrambler, and its generator polynomial is G(X)=X 43 +1.
5. method according to claim 1; It is characterized in that; Comprise a destination address sign indicating number DAC and source address SAC code field in the data link layer protocol of said definition; For the IP data service; Destination address sign indicating number in the data link layer protocol of said definition and source address sign indicating number are represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address respectively; Promptly be used for representing country or the geographic area that the IP address is affiliated; Particular locality in belonging country or the geographic area; Node and particular user; Replace the forwarding and the exchange of three layers of IP address realization IP bag as two layers data-link layer address with the forwarding equivalence class of IP bag; Professional for packet voice; The destination address sign indicating number of the data link layer protocol of said definition and source address sign indicating number are represented the interim identity card number of expression user identity of telephone number or the appointment of network authentication center of both call sides respectively; With the interim identity card number of representing user identity of existing telephone number or the appointment of network authentication center address as speech packet; The telephone number that promptly utilizes both call sides is two layers of exchange that destination address sign indicating number and source address sign indicating number in the DLP frame header are realized voice signal as the data link layer protocol frame of said definition; For the calling party; Callee's telephone number is the destination address sign indicating number of the data link layer protocol frame of said definition; Calling party's telephone number is the source address sign indicating number; For the callee; The destination address sign indicating number is a calling telephone number; The source address sign indicating number is callee's oneself a telephone number; Destination address sign indicating number and source address sign indicating number adopt the true telephone number of both call sides or are interim identity card according to one of the telephone number appointment interim number by network management center or network management AUC after through user's identification authentication; Temporary number with the network management center appointment in the communication subsequently is the destination address sign indicating number and the source address sign indicating number of DLP frame as the packet voice signal; Thereby raising security performance; The destination address sign indicating number adopts identical structure with the source address sign indicating number; Adopt the complete number system of itu standard in E.164; Complete destination address sign indicating number and source address sign indicating number are by national code CC; Domestic area code NRC; Four parts of station code NAC and personal code work UC are formed; Destination address sign indicating number and source address code field length all are i.e. 8 eight hytes of 64 bits; Wherein the national code field length is i.e. 2 eight hytes of 16 bits; Be used for identifying certain service code of some countries or specific geographic area; CC is the first order forwarding label of the data link layer protocol frame of said definition; There is one or more service code country or geographic area; The voice service code; The video traffic code; IPv4 service code or IPv6 service code; The concrete national code value of related service is specified by relevant international standard mechanism; Adopt the international area code in the existing telephone coding system for the professional national code of packet voice; Domestic area code field length is 16 bits; Certain regional service code is the second level forwarding label of the data link layer protocol frame of said definition in the indication a state; Concrete NRC value is distributed by the communication highest administration mechanism of country; Fixed telephone network value for adopting packet voice technology is the national distance area code in the present phone number system; For the mobile communication system NRC value that adopts the packet voice tranmission techniques is mobile network number, and the station code field is 16 bits, identifies the service code of certain network node; Station code is the third level forwarding label of the data link layer protocol frame of said definition; Occurrence is specified by Virtual network operator or Internet service provider, for the network node code is an end office (EO) number, promptly is equivalent to the 4th to the 7th in just present 11 phone numbers of national distance area area code in the landline telephone for the mobile communication system station code value that adopts the packet voice tranmission techniques for the ground area code for the value of the landline telephone station code that adopts the packet voice tranmission techniques; The personal code work field length is 16 bits; Indicate certain user's service code, personal code work is the fourth stage forwarding label of the data link layer protocol frame of said definition, and concrete UC value is specified by Virtual network operator or Internet service provider; The UC field value is that landline telephone or its value of mobile phone all are the numbers of the last a few bit-identify particular users in the present telephone number; In order to reduce the expense of packet voice signal packets header, voice service is divided into local telephone network; National distance and international long-distance, according to the difference of physical circuit also can be divided into wired be landline telephone and wireless be mobile communication; Concrete voice service type is confirmed by the business type field value of the data link layer protocol frame of said definition; During the data link layer protocol frame of the said definition of forwarded, at first search the business type field in the data link layer protocol frame of said definition, confirm professional priority through concrete type of service; Be the national code in the destination address sign indicating number of searching in the data link layer protocol frame of said definition then; Next is domestic area code; Be station code once more; Be personal code work at last; In case find a certain item code and local node different of the data link layer protocol frame of said definition, network node is no longer handled DAC back field in the data link layer protocol frame of said definition, directly is forwarded to next node; The principle that the data link layer protocol frame of said definition is transmitted is to adopt longest match principle; According to destination address sign indicating number decision route is the OSPF that utilizes in the IP routing protocol; English is Open Shortest Path First; Be abbreviated as OSPF, Border Gateway Protocol; English is Border Gateway Protocol; Be abbreviated as the dynamic routing table that BGP produces, the traffic engineering of utilizing the data link layer protocol of said definition to provide is come explicit configuration route.
6. method according to claim 1; It is characterized in that; Call out the termination that connects when utilizing relevant implementing signalling calling both sides or calling in many ways to connect foundation and termination of a call; H.323 call signaling adopts; Conversation initialized protocol, English are SessionInitiationProtocol, are abbreviated as SIP; Media Gateway Control Protocol, English are MediaGatewayControlProtocol, are abbreviated as MGCP; Signaling System 7(SS-7), english abbreviation are SS7; And in other signaling protocol standard one or several; When certain user need be with another one or a plurality of user's communication; Link at first connects at the two ends that will converse; Be specially that end makes a call with relevant signaling in the source; The packet voice network node is that the response of DLP network node is called out; Network node is directly the destination address sign indicating number of called number as the data link layer protocol frame of said definition; Or specify the destination address sign indicating number of a temporary designator in addition as the data link layer protocol frame of said definition; Simultaneously interim to specify a value be that temporary number is as the source address sign indicating number as the source address sign indicating number of the data link layer protocol frame of said definition or network authentication administrative center calling number; Network node is selected route according to the destination address code value; Transmit the data link layer protocol frame of said definition; Each switch uses signaling connecting to call out on the selected path of network; Up to the purpose terminal; If call accepted is agreed at the purpose terminal; Then agree call accepted to source end indication purpose terminal according to the signaling inverse signal; Both sides begin conversation; Cancellation connects link behind the end of conversation; The cancellation that conversation connects link by either party initiation of calling party and callee to show end of conversation; Any end in the conversation is initiated the request of removing with signaling; The network switch accepts request; And be sent on each switch on the original talk line; These switches are removed information with the signaling transmission; Be sent to an other end of conversation always; End of conversation; The network switch is accepted to refresh after talking link connects and is transmitted; If what described packet voice adopted is towards connectionless mode; Set up the connection link of a logic so with signaling at the two ends of conversation; But the transmission of signal in network is not along a fixing circuit in communication process; Adopt the transfer approach of present IP; The circuit that signal transmits is not fixed, and only needs between the two ends of conversation, to set up virtual logic and connects.
7. method according to claim 1; It is characterized in that; The voice signal transport process that produces in the communication process is at first that voiceband user is signal digitalized; Voice signal bit stream after adopting voice compression algorithm to digitlization then carries out processed compressed; Digital coding method to analogue voice signal adopts the G.711 pulse code modulation PCM of definition; G.726 Ding Yi adaptive audio pulse code ADPCM; G.728 Ding Yi low delay Code Excited Linear Prediction LD-CELP; G.729 Ding Yi CS-ACELP, CS-ACELP are that english abbreviation, the Chinese of Conjugate-StructureAlgebraic-Code-ExcitedLinear-Predicti on are the variations algebraic code-exited linear prediction; G.723.1 Ding Yi algebraic code-exited linear prediction ACELP; Any in the RPE-LPT that adopts among the GSM or other voice coding technology standard; Export a frame of digital speech packet then at regular intervals at interval; Digitized speech bit stream after the framing is encapsulated into as information load in the payload field of data link layer protocol frame of said definition; According to the type of voice service promptly be belong to fixedly local telephone network, fixedly national distance, fixedly international long-distance, move any business type field value that the data link layer protocol frame of said definition is set in domestic call, the international mobile phone; And specify the destination address and the source address sign indicating number of the data link layer protocol frame of said definition according to voice service type and conversation number; When needing the voice signal demand to carry out the encrypting and authenticating processing; Carry out relevant the processing according to the algorithm classification of secure fields indication; And at call ends process negotiation to establish safety relation; The Security Parameter Index value is set in the SPI field in the data link layer protocol frame of said definition; In order to guarantee that the voice signal bit stream receives in order; The number of frames value is set in regular turn; Data link layer protocol frame to said definition carries out sending on the physical link after frame check is handled at last; It is the DLP node device that physical circuit is sent into the network switch to the data link layer protocol frame that has encapsulated the said definition of voice signal bit stream; Transmission, the exchange of voice signal in network all realizes by the data link layer protocol frame of said definition then; Transmit in order in the network, transmit; Every switch is on the way transmitted the data link layer protocol frame of said definition according to the destination address sign indicating number in the data link layer protocol header of said definition; Finally deliver to the purpose terminal; Parse the digital voice frame at the purpose terminal according to inverse process; And finally be reduced into voice signal; Described gap periods at regular intervals ground output one frame of digital speech packet; The transmission cycle with digitizing solution, whether adopt compression algorithm relevant; If what the output voice bitstream adopted is the voice bitstream of 64 kilobits per seconds in the present landline telephone; Adopt the i.e. voice signal of 160 bytes of promptly each output 1280 bits of per 20 milliseconds of output one frame voice signals; If having adopted G.729, standard voice signal carries out processed compressed; The output signal is the voice signal of 8 kilobits per seconds; Per 15 milliseconds of output 80 bits i.e. 10 bytes; Then in 30 or 45 milliseconds, export a Speech frame; The i.e. G.729 grouping of each exportable 2～3 frames; That is to say the voice signal bit stream of 20 or 30 bytes is encapsulated in the data link layer protocol frame of a said definition and transmit; If videophone; When transmitting the voice audio signal, also need transmit image video signal; Send picture signal and voice signal after the digitlization so at certain time intervals simultaneously; Voice signal after image after the digitlization and the digitlization all adopts relevant compression algorithm to carry out processed compressed; Concrete length is relevant with accepted standard; Adopt MPEG-2; MPEG is that the DVB of english abbreviation, MPEG-4 or the ETSI of the European Telecommunication Standard mechanism definition of Motion Picture Experts Group transmits videophone; Export 188 bytes so at every turn, promptly 188 bytes are mapped in the data link layer protocol frame of said definition at every turn and transmit.
8. method according to claim 1; It is characterized in that; The data link layer protocol of said definition comprises that a cover security mechanism guarantees the safety of upper-layer service in the network transport process; Concrete grammar is :(1) thereby adopt the temporary number of network authentication center appointment to replace user's true number to shield user's true telephone number as the address of speech packet) the packet voice business is encrypted and authentication processing; The safety that realizes upper layer signal through these two kinds of measures transmits; When the needs voice divides into groups to carry out the encrypting and authenticating processing; Through a series of negotiation of two ends process of conversing at needs; Confirm the cryptographic algorithm of employing; Identifying algorithm; Be provided with or exchange the initialization password; Consulting encrypting and authenticating algorithm and exchange initialization Password Operations adopts the internet security internet key exchange IKE related and IKMP ISAKMP and RFC2409 definition of RFC2408 definition to realize; Set up two security associations then; English is Security Association; Be abbreviated as SA; And the destination address according to conversation is a telephone number; The algorithm that adopts is confirmed a Security Parameter Index SPI; The SPI value is added in the Security Parameter Index field in the data link layer protocol frame header to be used for identifying the voice signal and to encrypt; Security association during authentication processing; The encrypting and authenticating algorithm that Security Parameter Index and destination address identify security association uniquely to be adopted; Simultaneously comprising the destination address sign indicating number; The cryptographic algorithm that adopts; Identifying algorithm; The initialization password; Security Parameter Index adds in the security association database in interior relevant parameter; Security association database write down with security-related various data field lengths be 32 bits; Wherein decimal value " 0 " is used for node this locality; Specific implementation is used; Decimal value 1～255 is kept to using in the future by IANA; Other value is used to identify security association; Owing to encrypt; The different needs of identifying algorithm carries out some data and fills; The data of filling are positioned at after the payload field; And a length value of filling adds in the filling length field value; The verify data that authentication processing generates is positioned at after the padding data field; Before the frame check field; Utilize the number of frames value in the data link layer protocol frame header of said definition that anti-reproducing function is provided; When carrying out encryption; The scope of encrypting comprises that the payload data on upper strata is a packet voice; The padding data field contents, the scope of authentication comprises the filling length field when carrying out authentication processing; The number of frames field; The Security Parameter Index field; Payload data; The padding data field contents.
9. method according to claim 1; It is characterized in that; The perfect network control administrative mechanism of a cover that comprises the data link layer protocol of said definition realize the packet voice network comprise that Topology Discovery, 2 layers of protection are switched, the control and management of Link State indication, fault management, performance management, configuration management; Described network control management realizes by control frame; When the binary value of the business type field of the data link layer protocol frame of said definition representes that the content that the encapsulation of data link layer protocol frame payload field is carried is a network control management information during for " 10000001 "; Corresponding data link layer protocol frame is a control frame; Control frame is realized Topology Discovery, Link State indication, fault management, performance management, configuration management network control and management function; For annular and network topology; Control frame also provides a kind of mechanism that realizes 50 milliseconds of protection switch functions; Control frame adopts the TLV structure; TLV is the english abbreviation of Type-Length-Value; The Chinese meaning is type-length-value; Type field length is 8 bits; Be used for identifying the type of control frame; Length field length is 8 bits; Be used for identifying the length that the value of representing with the byte form among the TLV is the Value field; Value field comprises the particular content that related parameter is arranged of control frame; In the control frame in the TLV structure usage of type field as shown in table 2; What represent when wherein type field value is binary " 00010001 " that control frame carries is OSPF Routing Protocol information; OSPF is the english abbreviation of OSPF; Control frame carries the type field binary value is BGP Routing Protocol information for " 00010010 " expression; BGP is the english abbreviation of Border Gateway Protocol; Control frame carries the type field binary value is Signaling System 7(SS-7) SS7 information for " 00010011 " expression; What the type field binary value carried for " 00010100 " expression control frame is signaling information H.323; Control frame carries the type field binary value is the Session initiation protocol SIP signaling information for " 00010101 " expression; Control frame carries the type field binary value is Media Gateway Control Protocol MGCP signaling information for " 00010110 " expression; When being binary " 11111111 ", type field representes that control frame is the self-defining management control frame of manufacturer; The self-defining management function of manufacturer comprises that equipment manufacturers are the self-defining network management control function of network management control function and operator that home built relevant devices is added; Its management data content is self-defined by manufacturer; But need to adopt the TLV structure; The number of frames value of the data link layer protocol control frame of said definition is used for identifying the sequencing that control frame sends; Realize the function of the data link layer protocol control information transmission priority sequence of the said definition of sign; The payload information field of the data link layer protocol control frame of said definition comprises one or more control TLV information
The usage of the binary value of type field value in table 2. control frame
The binary value of type field Usage 00000000 Keep 00000001 The Topology Discovery claim frame 00000010 The Topology Discovery response frame 00000011 Topology report frame 00000100 2 layers of protection switching request frame 00000101 Response frame is switched in 2 layers of protection 00000110 2 layers of protection switch status report frame
< num="0005 "> < > < cols="2 "> < colname="c001 "colwidth=" 50% " /> < colname="c002 "colwidth=" 50% " /> < > < > < morerows="1 "> 00000111 <> < morerows="1 "> The configuring request frame <> <> < > < morerows="1 "> 00001000 <> < morerows="1 "> The configuration response frame <> <> < > < morerows="1 "> 00001001 <> < morerows="1 "> The configuration report frame <> <> < > < morerows="1 "> 00001010 <> < morerows="1 "> The fault inquiry claim frame <> <> < > < morerows="1 "> 00001011 <> < morerows="1 "> The fault inquiry response frame <> <> < > < morerows="1 "> 00001100 <> < morerows="1 "> The Trouble Report frame <> <> < > < morerows="1 "> 00001101 <> < morerows="1 "> The performance queries claim frame <> <> < > < morerows="1 "> 00001110 <> < morerows="1 "> The performance queries response frame <> <> < > < morerows="1 "> 00001111 <> < morerows="1 "> The performance report frame <> <> < > < morerows="1 "> 00010000 <> < morerows="1 "> WTR_Request, the Wait-to-Restore claim frame <> <> < > < morerows="1 "> 00010001 <> < morerows="1 "> Routing Protocol---OSPF <> <> < > < morerows="1 "> 00010010 <> < morerows="1 "> Routing Protocol---BGP <> <> < > < morerows="1 "> 00010011 <> < morerows="1 "> Signaling---Signaling System 7(SS-7), english abbreviation are SS7 <> <> < > < morerows="1 "> 00010100 <> < morerows="1 "> Signaling---H.323 <> <> < > < morerows="1 "> 00010101 <> < morerows="1 "> Signaling---conversation initialized protocol, english abbreviation are SIP <> <> < > < morerows="1 "> 00010110 <> < morerows="1 "> Signaling---Media Gateway Control Protocol, english abbreviation are MGCP <> <> < > < morerows="1 "> 00010111～11111110 <> < morerows="1 "> Keep <> <> < > < morerows="1 "> 11111111 <> < morerows="1 "> Manufacturer's self-defining dedicated network control and management frame.</entry></row></tbody></tgroup></table></tables>
10. method according to claim 9; It is characterized in that; The network control administrative mechanism that the data link layer protocol of said definition provides comprises Topology Discovery mechanism; Which Topology Discovery is used for finding out is that network node is the neighbor node of DLP node and the state of neighbor node; Find have what nodes to work on the ring for annular and network topology network node with Topology Discovery; The realization of topology discovery function relies on the Topology Discovery claim frame; English is Topology_Discovery_Requestframe, Topology Discovery response frame; English is Topology_Discovery_Responseframe and topology report frame; English is realized for Topology_State_Reportframe; During installation of project stage or engineering operation; Network node be DLP node A with the L2 address sign indicating number of this node as destination address periodically broadcast topology find that claim frame Topology_Discovery_Requestframe is to other node; Claim that one of them is a Node B; The transmission cycle is confirmed by Topology Discovery timer Timer_Topology_Discovery; It is programmable sending timing; Default to 2 seconds; Receive all nodes of Topology Discovery claim frame; Node B; Respond for node A by the Topology Discovery response frame; Give node A the existence of Node B and feedback of status thereof; Node A adds other address of node sign indicating number and the corresponding work state content that receive in the topological address database of node A to; For annular and network topology; The station code that has artis to go up in each address of node sign indicating number according to ring is that NAC field value content is confirmed to encircle upward or the node sequence in the grid; Node A receives the identical operations content from Node B continuous 3 times; Then think the Topology Discovery frame efficient in operation of node; Relevant topological state content is write the topological database of ingress; Network node is reported the state of frame to other this node of node report that comprises network management entity with topology; For bus topology, star and tree-like these three types its topological states of node report of not protecting the topological structure of switch function owing to the topological structure reason; Represent when type field value is binary value " 00000001 " among the control frame TLV that control frame is the Topology Discovery claim frame; Be the Topology Discovery response frame during binary value " 00000010 "; Represent during binary value " 00000011 " that control frame is a topology report frame; The value of Topology Discovery claim frame, Topology Discovery response frame and topology report frame is that the value of Value field all is two parameters; First parameter is a node address; Length is 8 bytes; Second parameter is the node duty; Length is 1 byte; The node duty is as shown in table 3
Second parameter of table 3. Topology Discovery frame
Figure FSB00000641683200101
。
11. method according to claim 9; It is characterized in that; The network control administrative mechanism that the data link layer protocol of said definition provides comprises 2 layers of wrap protection; 2 layers of protection are switched to refer to and when the network physical link breaks down, are allowed in 50 milliseconds, to realize the function that network self-healing recovers; 50 milliseconds of protection switch functions that DLP provides are used for realizing protecting annular or the network topology link of switching; Certain DLP node is assumed to node 2 in certain direction on ring or the grid; Be assumed to from node 1 to node 2; In 20 milliseconds of times, not receiving any data message or the physical link that comprise Frame, control frame, traffic management frame or empty frame breaks down; This node gets into 2 layers of protection switch status; Sending 2 layers of guard mode claim frame is that L2PS_Requestframe is assumed to node 1 to node coupled on the network; Node 1 receives and also gets into 2 layers of protection switch status behind these 2 layers of guard mode claim frames is the L2PS attitude; And send 2 layers of protection switch status and report that frames are that L2PS_State_Reportframe gives the node that connects network management entity or is broadcast to all nodes that are in normal state on the ring; The time value that receives any data message in the said stipulated time is programmable; The default value of DLP definition is 20 milliseconds; In the L2PS attitude; All packets of 2 are switched on the subsequent use path from node 1 to node; In case the fault clearance on the node 2; Node 2 gets into normal state; Starting WTR Wait-to-Restore timer is Timer_WTR; The Timer_WTR value is programmable; Scope is 0～1800 second; Default value is 10 seconds; In case the WTR timer stops; It is that WTR_Requestframe gives node 1 that node 2 sends the WTR claim frame along the path before and after switching; Node 1 returns normal state from the L2PS attitude after receiving this frame; When being binary " 00000100 ", the type field value of DLP definition control frame representes that control frame is 2 layers of protection switching request frame; When being binary " 00000101 ", the type field value of control frame representes that control frame is that response frame is switched in 2 layers of protection; When being binary " 00000110 ", the type field value of control frame representes that control frame is that the report frame is switched in 2 layers of protection; The parameter that 2 layers of protection switching request frame TLV structure intermediate value is the Value field has 2; First parameter is this address of node sign indicating number; Length is 8 bytes; Second parameter is a kind of in Forced Switch FS, physical signalling inefficacy PSF, physical signalling degeneration PSD and the Manual Switch for the duty of this node; Length is 1 byte; The binary value of each state is as shown in table 4; Other value of this byte keeps to be done to use in the future; It is that the parameter of Value field has two that response frame TLV structure intermediate value is switched in 2 layers of protection; First parameter is this address of node sign indicating number; Length is 8 bytes; Second parameter length is 1 byte; Its binary value is successfully realized switching for " 00000000 " is represented; Binary value is switched unsuccessful for " 11111111 " expression; Other binary value keeps; 2 layers of protection are switched and are reported that value field has three parameters in the frame TLV structure; First parameter is the address of node sign indicating number; Length is 8 bytes; Second parameter is the reason of switching of node; Length is 1 byte; The binary value of each attitude is as shown in table 4; The 3rd parameter representes whether node is in 2 layers of guard mode; Wherein binary value is in 2 layers of protection switch status for " 11111111 " expression; Binary value is in normal state for " 00000000 " expression; Other is worth reservation; When control frame TLV type field value is binary " 00010000 "; The expression control frame is the WTR_Request frame; The WTR_Request frame has only a parameter; Length is 8 bits; Value is represented successful Wait-to-Restore for binary " 11111111 "; Other is worth reservation
The 2nd parameter type of table 4.L2PS claim frame and L2PS report frame
< num="0006 "> < > < cols="2 "> < colname="c001 "colwidth=" 50% " /> < colname="c002 "colwidth=" 50% " /> < > < > < morerows="1 "> Value <> < morerows="1 "> State <> <> < > < morerows="1 "> 10000000 <> < morerows="1 "> Forced Switch, English is Forced Switch, is abbreviated as FS <> <> < > < morerows="1 "> 00100000 <> < morerows="1 "> Physical signalling lost efficacy, and English is Physical Signal Fail, is abbreviated as PSF <> <> < > < morerows="1 "> 00001000 <> < morerows="1 "> Physical signalling is degenerated, and English is Physical Signal Degrade, is abbreviated as PSD <> <> < > < morerows="1 "> 00000010 <> < morerows="1 "> Manual Switch, English is Manual Switch, is abbreviated as MS <> <> < > < morerows="1 "> Other <> < morerows="1 "> Keep.</entry></row></tbody></tgroup></table></tables>
12. method according to claim 9; It is characterized in that; The network control administrative mechanism that the data link layer protocol of said definition provides comprises deployment management mechanism; Deployment management mechanism is used for realizing that to network node be the relevant configuring ports management of DLP node device; The port address of apparatus for network node must dispose one two layers address as the source address sign indicating number SAC of this port in the installation of project stage; The configuration management frame comprises three kinds: the configuring request frame; English is Configuration_Requestframe, configuration response frame; English is Configuration_ResponseFrame, configuration report frame; English is Configuration_Reportframe; During installation of project stage or engineering operation; Network management entity is that port sends the configuring request frame and is configured by network management interface to each link of apparatus for network node; The DLP node responds to network management entity by configuration response frame or configuration report frame; Represent that control frame is the configuring request frame when type field value is binary system " 00000111 " value among the DLP protocol definition control frame TLV; Be the configuration response frame during binary system " 00001000 "; Represent during binary system " 00001001 " that control frame is the configuration report frame; The configuring request frame comprises two parameters; First parameter is the origin node address; First parameter length is 8 bytes; Second parameter is new node address sign indicating number; Second parameter length is 8 bytes; The value of configuration response frame is that the Value field value comprises three parameters: first parameter is the origin node address; Field length is 8 bytes; Second parameter is new node address sign indicating number; Field length is 8 bytes; The 3rd parameter length is 1 byte; Its binary value is " 00000000 " expression configuration successful; Binary value " 11111111 " expression configuration is unsuccessful; Other value keeps to give in the future to be used; The configuration report frame comprises two parameters: first parameter is a node address; Field length is 8 bytes; Second parameter length is 8 bytes, representes the configuration address of this node.
13. method according to claim 9; It is characterized in that; The network control administrative mechanism that the data link layer protocol of said definition provides comprises fault management mechanism; Fault management mechanism is used for realizing the fault management to network node; Fault management capability is realized by the fault management frame; The fault management frame comprises three: the fault inquiry claim frame; English is Fault_Inquiry_Requestfram, fault inquiry response frame; English is the English Fault_Reportframe of being of Fault_Inquiry_Responseframe and Trouble Report frame; Represent that control frame is the fault inquiry claim frame when type field value is binary value " 00001010 " among the DLP protocol definition control frame TLV; Be the fault inquiry response frame during binary value " 00001011 "; Represent during binary value " 00001100 " that control frame is the Trouble Report frame; The fault inquiry claim frame comprises 1 parameter; This parameter is a node address; Field length is 8 bytes; The value of fault inquiry response frame is that the Value field value comprises two parameters: first parameter is a node address; Field length is 8 bytes; Second parameter length is that 1 byte is used for representing fault type; Its binary value is physical signalling inefficacy PSF for " 00000000 " expression fault; Binary value " 11111111 " expression fault is physical signalling degeneration PSD; Binary value is the normal fault-free of " 00001111 " expression node; Other value keeps to give in the future to be used; The value field of Trouble Report frame comprises two parameters: first parameter is a node address; Field length is 8 bytes; Second parameter length is that 1 byte is used for representing fault type; Its binary value is physical signalling inefficacy PSF for " 00000000 " expression fault; Binary value " 11111111 " expression fault is physical signalling degeneration PSD, and other value keeps to give in the future to be used.
14. method according to claim 9; It is characterized in that; The network control administrative mechanism that the data link layer protocol of said definition provides comprises performance management mechanism; Performance management mechanism is used for realizing to network node to be the performance management of DLP node; Performance management function realizes by the performance management frames; The performance management frame comprises three kinds of frames: the performance queries claim frame; English is Performance_Inquiry_Requestframe, performance queries response frame; English is Performance_Inquiry_Responseframe and performance report frame; English is Performance_Reportframe; When the control frame type field value is binary " 00001101 "; The expression control frame is the performance queries claim frame; It is certain performance indications of DLP node that the performance queries claim frame is used for certain network node of requesting query; When the control frame type field value is binary " 00001110 "; The expression control frame is the performance queries response frame; The performance queries response frame is used for the network administration properties index of the network node that response performance query requests frame proposes; When the control frame type field value is binary " 00001111 "; The expression control frame is the performance report frame; The performance report frame is used for to each item performance indications of network management entity reporting ent node; The value of performance queries claim frame is that the Value field comprises three parameters; First parameter is wanted the node address sign indicating number of query performance for request; Length is 8 bytes; Second parameter is the time measurement unit that is used for identifying calculation of performance indicators; Length is 4 bits; Wherein binary " 0001 " expression measurement unit is second; Binary " 0010 " expression measurement unit is minute; Binary " 0011 " expression measurement unit is hour; Binary " 0100 " expression measurement unit is the sky; Other field value keeps to using in the future; The 3rd parameter is the performance indications type; Length is 4 bits; Wherein binary " 0001 " expression performance indications are the Frame Check Sequence errors; Binary " 0010 " expression number of dropped packets; Binary " 0011 " expression packet loss; The time delay of binary " 0100 " expression bag is a time delay; Other value keeps to give in the future to be used; The value of performance queries response frame is that the Value field comprises 4 parameters; First parameter length is 8 bytes; Be used for representing node address that the performance queries claim frame is responded; Second parameter length is 4 bits; Be used for identifying the time measurement unit of calculation of performance indicators; The 3rd parameter length is that 4 bits are used for identifying the performance indications type; The 4th parameter length is 3 bytes; Be used for representing the performance index value that specifically will inquire about; The value of performance queries response frame is that second of Value field is that usage and the value of performance queries claim frame of time measurement unit and performance indications type is that the usage of second and the 3rd parameter of Value field is the same with the 3rd parameter; The value of performance report frame is that the Value field comprises 4 parameters; First parameter length is 8 bytes; Be used for representing to send the node address of performance report to network management entity; Second parameter length is 4 bits; Be used for identifying the time measurement unit of calculation of performance indicators; The 3rd parameter length is that 4 bits are used for identifying the performance indications type; The 4th parameter length is 3 bytes; Be used for representing that the performance index value that specifically will report, the value of performance report frame are that second of Value field is that usage and the value of performance queries claim frame of time measurement unit and performance indications type is that the usage of second and the 3rd parameter of Value field is the same with the 3rd parameter.
15. method according to claim 1 is characterized in that, the data link layer protocol of said definition provides traffic management mechanism to realize the traffic engineering of network; Method is that at first convection current is classified through all business of network, promptly to the speech that comprises from the upper strata; The IP data; Digital Television; Ethernet mac frame circuit simulation signal carries out priority classification at interior miscellaneous service and is divided into the business of high priority and the business of low priority, is that source address sign indicating number and destination address representation upper-layer service address are destination address and source address with two layers the data-link layer address of being positioned at of classification; Simultaneously to business according to country or geographic area; Economize; The area; County, city, villages and towns classify, thereby represent that with the L2 address of classification physical link port L2 address carries out the classification of countries to physical resource, distribute different band width in physical links to be used to transmit dissimilar business simultaneously; The miscellaneous service of the whole network of flowing through is mapped on the actual physical link according to different priority type and region classification, realizes the flow and the bandwidth resources of whole network are carried out uniform dispatching management and monitoring through the traffic management frame, specific as follows: at first to from data link layer---all business of the above level of DLP layer are classified; Be divided into the business of high priority and the business of low priority, the business packet includes network managing control information of high priority is a control frame; Traffic management information is the traffic management frame; Comprise various real-time voice service fixing or mobile voice or video telephone; The various real-time videos that comprise Digital Television; IP-based real time business and SDH/SONET circuit simulation signal, the business of low priority are general IP data service; Concrete various types of traffic is identified by the business type field value in the data link layer protocol frame of said definition, in the data link layer protocol frame of said definition, has defined the destination address sign indicating number and the source address sign indicating number of a classification, and the destination address sign indicating number adopts identical structure with the source address sign indicating number; All by national code; Domestic area code; Station code and personal code work four parts are formed, and are used for concrete country or geographic area under the identification service respectively; The concrete province or the state; Concrete node and concrete specific user are for IP operation; Destination address sign indicating number and source address sign indicating number are represented purpose IP address and the forwarding equivalence class of source IP address in the IP packet head respectively, represent the telephone number of both call sides respectively for voice service destination address sign indicating number and source address sign indicating number, represent the address of Digital Television transmitting terminal and receiving terminal respectively for digital television business destination address sign indicating number and source address sign indicating number; For ethernet mac frame circuit simulation signal service destination address sign indicating number and the source address sign indicating number address of expression signal transmitting terminal and receiving terminal respectively, like this through data-link layer address to the speech that comprises from the upper strata; Data; Video; Ethernet and TDM circuit simulation signal have carried out the classification of region at interior miscellaneous service, miscellaneous service according to country; Province/state; The area; County, city, villages and towns; Network node and particular user are classified; Each node port that whole physics is transmitted network comprises that the data-link layer address of one two layers of each light-wave identifications of wavelength-division multiplex system is the source address of DLP frame simultaneously, and network bandwidth resources is classified to the bandwidth resources of whole physics transmission network according to type of service and geographic area, according to type of service and network traffics Internet resources is dispatched; Part bandwidth is used to transmit important real time business; Part bandwidth is used to transmit general IP data service, and a part of bandwidth link is used to transmit international business, and a part of bandwidth link is used to transmit business transprovincially; Distribute certain bandwidth link to be used to transmit local service; The break down link of the service occupation low priority traffice that allows high priority of network, traffic engineering realizes that through the traffic management frame traffic management frame is monitored processing to the flow and the network bandwidth resources of whole network; Network management system comprises a traffic engineering database; This data-base recording the link circuit resource distribution situation of whole network, flow through the type of service of network; The overall budget number; Total flow; Physical link speed; Allow maximum transfer rate, when the business type field value is set to binary value " 10000010 " in the data link layer protocol frame header of said definition; Represent said definition data link layer protocol frame encapsulation be the traffic management frame; The traffic management information of traffic management frame adopts the type-length-value structure, and English is Type-Length-Value, and english abbreviation is TLV; Wherein, Type field length is 8 bits, is used to refer to the type of traffic management frame, and length field length is 8 bits; Being used for byte form indicated value is the length of alue field; Value is that the alue field comprises concrete traffic management content frame, and the usage of network management frame type field is as shown in table 5, and what represent when wherein type field value is binary " 00000001 " among the traffic management frame TLV that traffic management frame payload carries is link traffic flow attribution information; Its value is that the alue field contents comprises four parameters; First parameter is a node address, and length is 8 bytes, and second parameter is type of service; Be used for representing type of service through under certain node flow bag; Length is 1 byte, and the service class offset of dissimilar business confirms that by table 1 the 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through certain node link flow; Wherein binary value is a peak rate for " 00000001 " expression flow measurement parameter type; Unit is a bits per second, and binary value is a Mean Speed for " 00000010 " expression flow measurement parameter type, and unit is a bits per second; Binary value is that " 00000011 " expression flow measurement parameter type is maximum bag number; Unit is the bag per second, binary value for " 00000100 ' ' expression flow measurement parameter type is average number of packets, unit is the bag per second; binary value is the peak value burst length for " 00000101 " expression flow measurement parameter type; unit is a byte, binary value be that " 00000110 " expression flow measurement parameter type is the agreement burst length, unit is a byte; binary value is a burst excess length for " 00000111 " expression flow measurement parameter type; unit is a byte, and other value keeps gives use in the future, and the 4th parameter length is the value that 4 bytes are used for identifying concrete various flows; represent the Resource Properties of various physical links when type field value is binary system " 00000100～00100111 " among the traffic management frame TLV; The types value of various concrete links is as shown in table 5, and the source attribute values of various physical links includes four parameters, and first parameter is a node address; Length is 8 bytes; Second parameter is type of service, is used for representing the type of service through under certain node flow bag, and length is 1 byte; The service class offset of dissimilar business is confirmed by table 1; The 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through certain node link flow, and wherein binary value is a peak rate for " 00000001 " expression flow measurement parameter type, and unit is a bits per second; Binary value is a Mean Speed for " 00000010 " expression flow measurement parameter type; Unit is a bits per second, and binary value is the largest packet number for " 00000011 " expression flow measurement parameter type, and unit is the bag per second; Binary value is that average packet is a packet count for " 00000100 " expression flow measurement parameter type; Unit is the bag per second, and binary value is the peak value burst length for " 00000101 " expression flow measurement parameter type, and unit is a byte; Binary value is that " 00000110 " expression flow measurement parameter type is the agreement burst length; Unit is a byte, and binary value is a burst excess length for " 00000111 " expression flow measurement parameter type, and unit is a byte; Other value keeps to give in the future to be used; The 4th parameter length is the value that 4 bytes are used for identifying concrete various flows, and the number of frames value of the traffic management frame of the data link layer protocol of said definition is used for identifying the sequencing that the traffic management frame sends, and realizes the function of the data link layer protocol flow control management information transmission sequencing of the said definition of sign; The data link layer protocol of said definition is that the payload information field of DLP traffic management frame comprises one or more traffic management TLV information
The usage of table 5. traffic management frame type field
The binary value of type field Usage 00000000 Keep 00000001 The link flow attribute 00000010 10Mbps ethernet link attribute 00000011 100Mbps ethernet link attribute 00000100 10/100Mbps ethernet link attribute 00000101 The gigabit ethernet link attribute 00000110 10Gb/s ethernet link attribute 00000111 The STM-0SDH link attribute 00001000 STM-1/OC-3c SDH link attribute 00001001 STM-4/OC-12c SDH link attribute 00001010 STM-16/OC-48c SDH link attribute 00001011 STM-64/OC-192c SDH link attribute 00001100 STM-256/OC-768c SDH link attribute 00001101 64 kilobits/second physical link attributes 00001110 1544 kilobits/second PDH link attributes 00001111 2048 kilobits/second PDH link attributes 00010000 6312 kilobits/second PDH link attributes 00010001 8448 kilobits/second PDH link attributes 00010010 4368 kilobits/second PDH link attributes 00010011 4736 kilobits/second PDH link attributes 00010100 139264 kilobits/second PDH link attributes 00010101 IEEE 802.11a link attribute 00010110 IEEE 802.11b link attribute 00010111 IEEE 802.11g link attribute 00011000 IEEE 802.11h link attribute 00011001 The GSM link attribute 00011010 IEEE 802.16a link attribute, frequency are 2-11GHz 00011011 IEEE 802.16c link attribute, frequency are 10-66GHz 00011100 The WCDMA link attribute 00011101 The TD-SCDMA link attribute 00011110 The CDMA2000 link attribute 00011111 The DVB link attribute 00100000 The MPEG-1 link attribute 00100001 The MPEG-2 link attribute 00100010 The MPEG-3 link attribute 00100011 The isdn link attribute 00100100 The adsl link attribute 00100101 The VDSL link attribute 00100110 Other xDSL link attribute
00100111～11111111 Keep
。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11706607B1 (en) 2021-06-16 2023-07-18 T-Mobile Usa, Inc. Location based routing that bypasses circuit-based networks

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102035814B (en) * 2009-09-30 2014-08-27 瞻博网络公司 Method and device for guaranteeing service quality by VPN (Virtual Private Network) IPSEC (Internet Protocol Security) tunnel
CN101984624A (en) * 2010-11-03 2011-03-09 蓝汛网络科技（北京）有限公司 Method and device for distributing network flow
CN102857341A (en) * 2011-06-28 2013-01-02 联芯科技有限公司 Communication method for encrypted call
CN102647411B (en) * 2012-03-20 2015-09-30 李宗霖 A kind of safe transmission method of data
CN102594567B (en) * 2012-03-20 2015-11-25 李宗霖 A kind of secure encryption transmission method of speech data
EP3047481A4 (en) * 2013-09-20 2017-03-01 Amazon Technologies Inc. Local and remote speech processing
CN104573572B (en) * 2013-10-25 2019-06-14 上海华力创通半导体有限公司 The method of read write chip identifier through encrypting
CN103618574B (en) * 2013-12-02 2016-04-13 韶山恒旺电气有限公司 A kind of SPDIF optical fiber audio decoder and repeat circuit
CN104506236A (en) * 2014-12-17 2015-04-08 河南省电力勘测设计院 Small optical end equipment integrated with telephone interface and network interfaces
FR3058288A1 (en) * 2016-10-28 2018-05-04 Orange SYSTEM FOR HIERARCHISING COMPUTER APPLICATIONS IMPLEMENTED BY A GROUP OF USERS
CN108280373A (en) * 2018-01-31 2018-07-13 上海集成电路研发中心有限公司 The method of read write chip identifier through encrypting
CN109348079B (en) * 2018-10-10 2020-10-16 中国电子科技集团公司第七研究所 One-to-many group grouping voice realization method suitable for narrow-band wireless network
CN114499793B (en) * 2020-10-27 2023-04-28 中国移动通信集团设计院有限公司 Method and device for screening data of signaling monitoring after centralized large-area center
CN112672354B (en) * 2020-12-25 2022-02-01 四川长虹电器股份有限公司 Application program upgrading authentication method and device and intelligent terminal equipment
CN113346980B (en) * 2021-08-02 2023-08-11 浙江国利信安科技有限公司 Method, electronic device and computer storage medium for message forwarding
CN115174496B (en) * 2022-05-23 2024-02-13 北京大学 Processing terminal and switch for intra-network combined transmission

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1246012A (en) * 1999-07-14 2000-03-01 邮电部武汉邮电科学研究院 Adaptation method for making internet be compatible with synchronous digital system
CN1246013A (en) * 1999-07-14 2000-03-01 邮电部武汉邮电科学研究院 Frame encapsulation of adaptation method for making internet be compatible with synchronous digital system
CN1248848A (en) * 1999-09-01 2000-03-29 信息产业部武汉邮电科学研究院 Adaption method for integrating Ethernet with quasi-synchronous digital system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1246012A (en) * 1999-07-14 2000-03-01 邮电部武汉邮电科学研究院 Adaptation method for making internet be compatible with synchronous digital system
CN1246013A (en) * 1999-07-14 2000-03-01 邮电部武汉邮电科学研究院 Frame encapsulation of adaptation method for making internet be compatible with synchronous digital system
CN1248848A (en) * 1999-09-01 2000-03-29 信息产业部武汉邮电科学研究院 Adaption method for integrating Ethernet with quasi-synchronous digital system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11706607B1 (en) 2021-06-16 2023-07-18 T-Mobile Usa, Inc. Location based routing that bypasses circuit-based networks

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