CN1239637A - Arrangement for interleaving data and signalling information - Google Patents
Arrangement for interleaving data and signalling information Download PDFInfo
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- CN1239637A CN1239637A CN 97180241 CN97180241A CN1239637A CN 1239637 A CN1239637 A CN 1239637A CN 97180241 CN97180241 CN 97180241 CN 97180241 A CN97180241 A CN 97180241A CN 1239637 A CN1239637 A CN 1239637A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/07—Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates or bit rates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13034—A/D conversion, code compression/expansion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13174—Data transmission, file transfer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13176—Common channel signaling, CCS7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13209—ISDN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13216—Code signals, frame structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/1322—PBX
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13292—Time division multiplexing, TDM
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13296—Packet switching, X.25, frame relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing
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Abstract
The present invention relates to an arrangement and a method respectively for switching information at least in the form of data and signalling information wherein the signalling information at least partly is transported on a common channel signalling channel (14). The switching arrangement (10) comprises signalling handling means (12) for handling signalling information on said common channel signalling channel and data access means (11) handling data. The data access means (11) further comprises means or additional access means for handling signalling information on the common channel signalling channel and means for replacing idle information or filler information on the common channel signalling channel by data information.
Description
Technical field
The present invention relates at least with the form of data and signaling information exchange message in communication network for example.Signaling information relate to such as be connected with data, professional and certain specific connection uses information-related state information of which bar channel or the like.Signaling is being used between subscriber equipment and switch or the switch and between different switch or the switch.Invention be specifically related to be used at least with a kind of switch of the form exchange message of data and signaling information and between at least the first network node of communication network and second network node a kind of method of data information and signaling information at least.Invention also relates to an exchange point in the communication network that comprises private branch exchange.In addition, invention also relates to a communication network that comprises first and second nodes at least, and wherein data message and signaling information transmit between two nodes.
The prior art state
Signaling is a kind of information of using between the various switches in communication network, and for example signaling information comprises and relevant information such as A number, B number, business, used communication channel.
Use the common channel signalling channel in Modern Communication System, an example is exactly a so-called D channel among the integrated services digital network ISDN.Connect in (PCM (pulse code modulation) system) at the 2Mbit that often uses, a frame comprises 32 time slots, and the D channel sends in time slot 16.Use standard transmission technique, the D channel usually as a 64kbps channel, 16kbps channel or such as modulator-demodulator or other categorical data net based on V.24 data channel transmission.Therefore it will transmit in a separate network that needs large number quipments because this be different from data network with and/or the used network of speech transmissions.If so exist two networks, each network to need independently unit and independently management at least, for example independently operation and maintenance system etc.And the flexibility of this system can't be satisfied people's requirement.
In some implementations, extremely limited to the use of the channel capacity that transmits signaling, for example have only tens percent or a few percent.If when particularly having seldom network node of the speech linking number that need work simultaneously in the network, often rent, cost is very high and to be specifically designed to the use of signaling transfer bandwidth just very limited sometimes.For example, suppose that a node is per call needs Ireland (erlang) of 180 seconds for the duration, signaling link per hour will be used for handling to be called out for 20 times, and this accounts for a very little part of the capacity of renting (it for example may be a full 64kbps channel).
EP-A-0418851 relates to a control channel termination interfaces of the control channel signals that is used on the terminating digital multiplexing transmission route.Information is distributed on some connections or the whole interface in this case, rather than sends on a channel.
" Motorola technical development " the 17th volume, in December, 1992 (USA), 145-150 page or leaf, " to the improvement of CCS7 common channel signaling No.7 link data transmission " literary composition that V.Fernandes delivered have disclosed and how to use the telephone signal of on to transmit some data once in a while.
The shortcoming of existing apparatus is its underaction, does not for example make full use of in several low bandwidth are used at least but has wasted the bandwidth of renting, and this is a major issue, because the leased line cost may be very high.And its requires that the higher and more complicated solution of cost is arranged because needs not only a network transmit the information that will transmit.In addition, the transmission speed of signaling information is fast not enough.
Summary of the invention
Therefore, people are needed be a kind of at least can swap data and the switch of signaling information, make the channel that is used for transmitting signaling information (for example special-purpose or the channel that comprises of public network such as ISDN or PSTN) can obtain than existing mode more efficient use.The still a kind of device that can realize using consolidated network swap data and signaling information that needs.In addition, need be a kind of flexibly, be easy to realize and compare the device that does not require too much equipment with existing apparatus.The still lower device of a kind of maintenance cost that needs.In addition, the still a kind of of needs can carry out quick exchange, the particularly device of quick exchange signaling information.
Be to realize above-mentioned functions, also need network switching node or exchange point in the communication network, this communication network comprises a private branch exchange.In addition, in order to satisfy above-mentioned requirements, also need a communication network that comprises two switching nodes or private branch exchange at least.
In order to satisfy target discussed above, also need a kind of by the method for exchange data information and signaling information at least of the some switches in the communication network.
In addition, for energy quick exchange signaling information, also need a kind of switch, a kind of method and a telecommunication system.
Therefore, a kind of switch is provided, one of them data resource is as signaling information, and this device comprises and is used for the signal processing device that the signaling information on the signaling channel is handled and is used for DAA to going to/handling from the data of some interfaces.Described DAA comprises the device that is used to handle the signaling information on the common channel signalling channel or additional access device and replaces idle information on the common channel signalling channel or filling information so that utilize the bandwidth that is not used to useful or actual signaling information on the signaling channel to transmit the device of data with data message.
Therefore, also provide a network switching node that comprises private branch exchange, the signal processing device that it comprises a switching matrix, is used for inserting the DAA of data on the plurality of data interface and is used to receive and send signaling information.DAA is placed in the switching matrix of private branch exchange, and it comprises the device that starts the signaling information access.Like this, a data resource is used as signaling information and uses, go to/transmit via DAA from the signaling information of signal processing device, go to/go up at circuit (for example data repeated link) from the signaling of exchange point and transmit, and the bandwidth that is not used to transmit signaling information on the signaling channel is used for transmitting data.Like this, according to the present invention, data resource is used for transmitting signaling information and data simultaneously.Therefore just may reduce the bandwidth of signaling channel as far as possible.
Also provide a communication network that comprises first and second switching nodes at least, data information and signaling information at least between these nodes.Each switching node also comprises a switching matrix that has the DAA that is used to insert data, and this DAA comprises the device that is used for access signaling information.Each switching node also comprises signal processing device, and wherein DAA and the signal processing device in each switching node communicates by a signaling connection line.DAA also comprises with data message and replaces useless signaling information or filling information so that the remaining bandwidth on the signaling channel can be used for the device of data information.Like this, according to invention, data resource is used for transmitting signaling information and data simultaneously.Therefore just may reduce the bandwidth of signaling channel as far as possible.
A kind of method also is provided, has been used at least between first network node of communication network and second network node data information and signaling information at least.When information from first node when Section Point transmits, this method may further comprise the steps: check whether comprise non-effective or idle information from the signaling information that receives in the signal processing device on the signaling channel in DAA, replace these (if present) non-effective or idle information with data message.Then data message and legal signaling information are advantageously packed, and on link, send to second network node.More particularly, in described second switching node, data message and signaling information are separated to be opened, idle information then is added into, so that be sent to signal processing device, afterwards, signaling information is fed to the software of second network node, and this software is handled it according to known way.
DAA specifically comprises packet switch apparatus or frame relay switch.Data message and signaling information just can exchange to another switching equipment via described (for example) packet switch apparatus on the data repeated link.In a preferred embodiment, DAA and signaling information processing unit communicate by a full rate common channel signalling channel.But in another embodiment, the signaling information and the filling information that may occur are in a strip speed (for example 16kbps) channel.But, compare with the situation of full rate, at this moment the propagation delay time of signaling information from the signal processing device to the DAA must be able to be accepted.
Advantageously, when from DAA when signal processing device transmits signaling information, the device that replaces such as the idle information of packing ratio top grade with data message also should produce such as the idle information of packing ratio top grade.Specifically, remain to the full rate connection of signal processing device exactly.
In a particular embodiment, the common channel signalling channel is an ISDN D channel.In a preferred embodiment, the D channel is with the 64kbps Channel Transmission.But, also may between DAA and signal processing device, use the sub-speed of 16kbps to connect as above-mentioned another embodiment.If common channel signalling channel or concrete D channel comprises idle information, filling bit for example, these information can be removed in DAA and be replaced by data message, when the information received from another switch, then carry out opposite process.Therefore, the filling bit in the specifically sub-rate channel is replaced by data.In a particular embodiment, the data link of transmitting data information and signaling information is connected and comprises X.25 a group mode interface or a frame relay user interface.
The priority that is generally the signaling information setting is than data message height.Advantageously, the DAA of switching equipment can be almost any data-interface access is provided, for example V.24 (ITU-T), Ethernet, token ring (ieee standard).
In a particular embodiment, switch can also provide the speech exchange, can exchange compressed voice before decompressing especially, that is to say that speech can exchange with compressed format.Switch also comprises the signaling collating unit, and this device comprises the device that is used for being incorporated in the sub-rate channel that different time-gap transmits at least, wherein has only partial bit to be used for transmission information in each time slot.The sub-rate channel that merges is exported on a full rate transmission channel or in the sub-rate channel that transmits in a public time slot.Advantageously, in described signal collating unit, the multiplexing or merging of the speech of compression and data and signaling information.
More particularly, switch comprises the compression/decompression compression apparatus that is used to handle Incoming/out voice call, and this moment, switch constituted starting of described voice call and/or terminating equipment.Signal processing device also advantageously comprises and is used for comprising that the plurality of sub rate channel that transmits in the public time slot of compressed voice is divided into some independent time slots so that the Deplexing apparatus of exchange at one.Before the sub-rate channel that exchanges in independent time slot is exported in described merging device, be distributed in the independent time slot with other and also comprise compressed voice and/or the sub-rate channel of signaling information and/or data merges.
In on October 1st, 96, the application number promptly submitted on the same day by the applicant identical with the application are the Swedish patent application " channel processing equipment, communication node and comprise the communication system of this channel processing equipment and method for transmitting signals " of 9603590-2, described and comprised voice compression and multiplexing signal processing apparatus.
The link that connects this switch and another switch advantageously comprises a special circuit, for example wall scroll or many 64kbps circuits.DAA advantageously places the switching matrix of private branch exchange (PBX or PABX).The signaling information processing unit advantageously places on the common circuit board, and this plate comprises compression/de-compression speech information function and/or the function of the method multiplex/demultiplex channel information that will more fully illustrate according to the back.
In a preferred embodiment, network exchange point or switching node comprise being specifically designed to as mentioned above and start the device keep a full rate communication channel, it from/to idle information of common channel signalling channel removal/interpolation or filling bit.Full rate communication channel between DAA and the signaling information processing unit also comprises a full rate 64kbps ISDN D channel.In addition, network switching node can comprise the device with the speech of non-decompressed format exchange compression.Specifically, compressed voice, data and signaling information a full speed channel (special circuit that for example comprises some 64kbps channels) go up to/transmit from another switching node, every 64kbps channel comprises one 8 bit time slots.
Be used at least advantageously comprising and be incorporated in a step that for example sends speech information on the 64kbps channel between described first and second network nodes with data and signaling information in the method that transmits information between first switching node and second switching node.If receive compressed voice information, every sub-rate channel of compressed information is assigned to one independently in the time slot, exchange the described sub-rate channel in each independent time slot, merge the sub-rate channel of described independence and comprise the sub-rate channel of independence of compressed voice and/or data and/or signaling information, and at least one public time slot, send one or more information to second switching node with other.
The application number that is proposed in December 29 nineteen ninety-five by the applicant identical with the application is the dynamic assignment that speech and data please " Verfahren und Vorrichtung zumMultiplexen von Sprache und Daten (the multiplexing method and apparatus that is used for voice-and-data) " in the Deutsche Bundespatent of 199549126.2-31 be discussed.The document is in this also is comprised in, with for referencial use.According to this document, sub-rate channel can optionally be set up in full speed channel in a different manner.This means if speech needs more capacity, just set up more multi-voice channel, also is like this for the data that comprise various forms of priority.Have only signaling channel not handle according to described method, but implement principle of the present invention, the residual capacity on the signaling channel can be used for transmission information.
The accompanying drawing summary
Hereinafter will invention be described comprehensively further with reference to the accompanying drawings, wherein:
Fig. 1 with block diagram illustrating be used for a switching node of deal with data and signaling information;
Fig. 2 with block diagram illustrating be used for a switching node of deal with data, signaling information and compressed voice;
Fig. 3 has illustrated signaling information and the transmission of data message between two switches; And
Fig. 4 has illustrated the transmission between first and second switches corresponding with second embodiment of speech, data and signaling information.
The detailed description of invention
Fig. 1 with block diagram illustrating a network switching node 10, for example it can be the 64kbps switching node of a standard.This node comprises DAA 11, is a packet/frame relaying switch in this specific embodiment, specifically also is called as packet frames positioner (PFA) herein; This node also comprises signal processing device 12, is an ISDND channel processor in this particular case.The data that packet/frame repeater exchanger 11 receives from plurality of data interface (for example V.24, Ethernet, token ring etc.) by connection line 13.In theory, in a preferred embodiment, packet switch 11 can receive the data from any data-interface.Packet/frame repeater exchanger 11 also receives the 64kbps D channel from D channel processor 12.In another embodiment, no longer be described further here, the D channel can also transmit as a 16kbps channel (for example), but for fear of time delay, preferably uses the transmission rate of 64kbps.Other access devices also are provided in packet/frame repeater exchanger 11, specifically are exactly the transparent access device (not shown) that is used to receive 64kbit D channel.Transparent access device (be specially one carry out adaptive transparent packet assembling device/decomposer according to HDLC (high-level data link) agreement) provides the terminal access function, so that the transparent communication of bit and byte of sync type protocol (for example HDLC/SDLC and BSC etc.), that is to say that this network can be this quasi-protocol transparent transmission is provided.
All data that packet/frame repeater exchanger 11 is received are through packing, and all data-interface competitions are so that get access to the trunk line available bandwidth of next DAA of next packet/frame repeater exchanger in another network switching node (not shown).DAA or concrete packet/frame repeater exchanger 11 detect D channel 14 and whether comprise idle information, and promptly whether it comprises such as the filling bit that does not have any useful signaling information.Comprise idle information of this class or filling bit if the D channel connects, these filling bits will be removed, and be replaced by the data from data-interface 13.Useful signaling information on the D channel 14 sends on connection line 15 with the grouping of forming from the information of other data-interface as grouping, this circuit can be in another switching node (not shown) of communicating by letter with it one of the packet/frame repeater exchanger X.25 or frame relay link.Therefore, the information of being made up of signaling information and data message has just sent to next switching node on a full 64kbit channel.In described another switching node in the packet/frame repeater exchanger of collaborative work, next this packet/frame repeater exchanger is substituted in and separates from signaling information in the packet switch apparatus and be sent to relative address (presentation mode of address information is actually known by producing idle information again, therefore data message no longer discussion here), thus a full 64kbit who is maintained to corresponding D channel processor in one switching node of described back connects.
When data message and signaling information were sent on circuit 15, signaling information had priority.This packet/frame repeater exchanger is that people are known in the prior art, and for example it can comprise the central processing unit that is used to measure and estimates the data volume or the like of transmission.
Advantageously, data and signaling information can send on a strip rate information channel, and perhaps sub-rate channel also can be used for transmitting data.In addition, connect shown in link 15 ', 14 ', 13 ' the dotted line as representative, switching node 10 is certainly worked under duplex mode.
But, in a preferred embodiment, switching node can also be handled speech, is specially the speech of compression.
This point that Fig. 2 has used block diagram illustrating.Identical among DAA 21 and the described embodiment of Fig. 1, it is positioned at the switching matrix of private branch exchange PBX or PABX, communicate by letter with other private branch exchange with data channel to use the compressed voice channel, and comprise a switch control device, be used for setting up on first communication line at least one full speed channel that leaves described private branch exchange, this full speed channel is used to connect described other private branch exchange.The transformat of first communication line is to be divided into the frame that comprises some time slots, full speed channel takies a certain time slot, a Channel Processing device will be provided at least, this device comprises at least one channel input and exports with received signal and on described full speed channel, at least one voice channel device is connected with each channel input, be used for shortening the signal that is used at least one the first sub-rate business channels into, perhaps make the part of each signal that occurs on this channel input arrive the described first sub-rate business channel by the voice channel device insusceptibly at least appearing at signal pressure on the respective channels input.The sub-rate business channel can be sub-rate speech channel or sub-speed data channel.First multiplexer is connected with each voice channel device, is used for the outgoing signal of the signal multiplexing that enters multiplexer at least two strip rate channels that provide on first full speed channel.The switch control device preferably can dynamically distribute the sub-rate business channel in the full speed channel, with compressed voice and data as required.
DAA 21 (for example also being to occur with the form of packet/frame repeater exchanger 21 here) is positioned at switching node 20, and as the description of being done with reference to figure 1, it receives data by the plurality of data interface on connection line 23.Article one, full 64kbps D channel is connected with packet/frame repeater exchanger 21 by connection line 24, to reduce propagation delay time.(as discussing with reference to figure 1, it also can be that the sub-speed of 16kbps connects, but at this moment must consider propagation delay time.) therefore, PFA21 can reduce bit rate.
Switch shown in Figure 2 or switching node 20 seem and can only work that still the same with Fig. 1, it also can be operated under the duplex mode certainly under simplex mode; This also is for simplicity.Compression set 27 receives speech by some branch roads, trunk line on connection line 26.Speech information in compression set 27 through the compression of a time 4: 1 or 8: 1 or 2: 1.Compressed voice is delivered to signal multiplexing device 30 by connection line 29.As discussing with reference to figure 1, packet/frame repeater exchanger 21 is by connection line 23 receiving data informations, by the signaling information of connection line 24 receptions from D channel processor 22.Idle information is removed, and the remaining bandwidth on the D channel is used for data service.The same with the situation of front, signaling information has priority.On a 64kbit transmission line 28 with 16 (or 8) kbit, the information that comprises data and signaling information is sent to multiplexer 30, speech, data message and signaling information are multiplexing in this process, go up to next switch or switching node (not shown) at special circuit 31 (for example) and to send, for example with the form of the wall scroll 64kbit channel that comprises a time slot.
Illustrated in switching node, how to receive non-compressed voice and it is compressed among Fig. 2.But, this node also can receive compressed voice, and at this moment speech directly enters multiplexer 30.This also is the general utility functions that below will more fully explain with reference to figure 3 and 4 respectively.
Fig. 3 has illustrated two switches 100,200.For the sake of simplicity, the transmission on the direction only has been described among the figure, but for those skilled in the art, these devices obviously are to work under duplex mode.First switch 100 comprises DAA 101, packet/frame repeater exchanger PFA for example, and Fig. 1 and 2 discusses as reference, data message D1, D2, D3, D4 that it receives from the plurality of data interface by connection line 105.Information can comprise such as the data from computer, automatic-answering back device machine etc.DAA 101 also receives signaling information by the connection line 106 that preferably includes a full 64kbit channel, wherein may comprise the idle information (or being idle information) of pure signaling information or signaling information and so-called filling bit form.
In to data that receive and the packet/frame repeater exchanger 101 of packing from the signaling information of D channel 102, signaling information has priority.X.25 or on the frame relay link 107 data D1-D4 and signaling information D-ch transmit to interface board 103 at one by circuit via the circuit board 104 that comprises the D channel processor at least (VCU plate), interface board 103 can comprise a TLU relay plate (trunk unit), it is an interface board or on-gauge plate, is used for transmission information between switch in this case.Here interface board 103 and VCU plate VCU1 are made up of circuit board independently, give a special circuit or public network etc. so that can export dynamic assignment to VCU.In one embodiment, also exist between from the switch to the interface board one so-called fixedly connected.But, also has other alternative method.VCU plate VCU1 comprises D channel processor 102.
As previously described, on a full 64kbps channel, data message D1-D4 and d-channel signaling information D-ch send to next switch 200 in a time slot TS.Used bandwidth sharing (for example having the dynamic assignment characteristic) in the preferred embodiment.In " Verfahren und Vorrichtung zum Multiplexen yon Sprache undDaten " that this point is mentioned in front more deep discussion is arranged.Briefly, reserve whole time slot for data in the embodiment shown in fig. 3.In each sub-rate channel, send every item number simultaneously according to 1/4th of D1-D4.This point that Fig. 3 has just used block diagram illustrating.Adopt the known packet switching of professional in one embodiment.Three sub-rate channels of 16kbit just are respectively applied for data D1, D2 and D3, latter two bit corresponding with sub-rate channel of 16kbit then comprises D channel information and data D4, if form (these bits will be substituted by D4 at least) from the D channel of D channel processor by filling bit.But, signaling information has priority all the time.
As the discussion of having been carried out with reference to figure 2, in the preferred embodiment of invention, switch also comprises the device that is used to exchange the device of speech or is used to exchange compressed voice specifically.The patent application co-pending that this respect also can propose with reference to same applicant " private branch exchange, communication system and the method for transmission signals on sub-rate channel ".
Fig. 4 has represented the switch 300 that private branch exchange can comprise.Equally, although this device is operated under the duplex mode certainly, Fig. 4 has only illustrated one-way transmission.Data D5, D6 arrives switch 300 by 305 inputs of the connection link on the data-interface.The working method of DAA or concrete PFA301 is identical with the above method of describing with reference to each figure of front, and it also will receive the signaling information from D channel processor 302 on a full 64kbps channel in the connection line 306 preferably.302 of D channel processors receive and handle the information from systems soft ware SW3.In packet/frame repeater exchanger 301, idle information is replaced by data message, and data message and signaling information are packaged then.In this case, the output of packet/frame repeater exchanger 301 is two sub-rate channels of 16kbps, and wherein a time slot on channel transmits the D5 data message, and another time slot then comprises D6 data message and signaling information.These channels are imported into a slot allocation apparatus, and this device has a signal collating unit that comprises multiplexer 315.
But, switch 300 also will receive the non-compressed voice V1 from phone 311.Speech information V1 comprises 8 bits, and is sent to the compression set 313 that compresses processing via connection line 312.Afterwards, V1 is sent to multiplexer 315 via connection line 314 by a sub-rate channel of 16kbps.
For compression, compression algorithm can use all if can be LD-CELP (ITU-T the advise G.728 standard) encryption algorithm of voice compression to 16kbps (4: 1 compression).Compression algorithm is stored in the public ROM of circuit board (VCU), and is loaded in 4 or 8 digital signal processors (DSP) on the plate.Can increase compression volume by increasing signal processor.But this is not a content of the present invention.
Switch 300 also will receive the compressed voice that connects on 308, and this connection 308 transmits speech in comprising a time slot of four sub-rate channels of 16kbps.Information is decomposed into four time slots in Deplexing apparatus 309, each time slot comprises a sub-rate channel of 16kbps, that is to say, (in this example) has only two bits to be used for transmission information in each time slot.At this moment, switch 300 becomes the terminating switch that constitutes three independent subchannels that comprise speech information (calling).Therefore, these speech informations are sent to destination separately through decompressing.For the sake of simplicity, not explanation decompression and output processing among the figure.But, the sound of passing on a message another 16kbps independent sub-rate channel corresponding with calling out V2 need be sent to switch 400, that is to say that switch 300 constitutes the transmission switch of described calling.Therefore, the independent sub-rate channel of 16kbps that comprises speech information V2 is sent to multiplexer 315 via connection line 310 in an independent time slot (wherein have only two bits be used for transmission information).Like this, multiplexer 315 will receive speech V1 from compression set, from speech V2, the data D5 of demodulation multiplexer 309 and D6 and from the D channel information of packet/frame repeater exchanger 301.Sub-rate channel makes up in multiplexer 315, and according to the mode identical with do description with reference to figure 3, be sent to interface board 303 by connection line 316, TLU plate for example, the full 64kbps channel that last conduct comprises a time slot is exported to the interface board 403 (for example TLU plate) in the switch 400 on connection line 317, in this time slot, two bits are used for speech V1, two bits are used for speech V2, two bits are used for data D5, and two bits are used for D channel and data D6.But, best here application bandwidth technology of sharing.At this moment be exactly that 32kbits is used for data (D5 and D6) and signaling information D-ch.For example, just can send half D5 information on a 16kbit channel, half D5 information then sends on another 16kbit channel in addition.For D6 also is like this.This point is represented by the dotted line in the time slot that mails to switch 400 in the drawings.
Multiplexer is responsible for location (on the time), and all information all will be passed through multiplexer.The priority of signaling information will be higher than data, and the priority of data message can be higher than speech.
Comprise information V1, V2, D5, the time slot of D6 and D-ch is sent to demodulation multiplexer 409 by connection line 416, and this device carries out de-multiplex operation, V1, V2, D5, D6 and D-ch are arranged into four independently in the time slot (or be respectively V1 and V2 at least distribute), have only (for example) two bits to be used for transmission information in each time slot.Addressing information is involved in a conventional manner, and speech information, data message and signaling information are sent to the device that is suitable for handling each customizing messages.For speech information V2, switch 400 becomes a terminating switch, therefore the sub-rate channel of 16kbps that uses two bits to transmit speech information V2 just is sent to decompressing device 413, comprises 8 bits of V2 to telephone set 411 outputs from this device.Speech information V1 is sent to multiplexer 415 by connection line 410, and this speech information V1 is comprised in the sub-rate channel of 16kbps in the independent time slot, and this time slot has only two bits to be used to transmit information V1.In multiplexer 415, according to preferred embodiment, speech V1 can merge with other speech information that for example receives by the compression set (not shown), output on connection line 417.This point no longer makes an explanation, because its mode is with identical from the information of switch 300 outputs.Data message D5 sends packet/frame repeater exchanger 401 by being connected link 407 to D6 and signaling information D-ch in two time slots.Data message D6 can be with any suitable method mark and detection, data message D5, and D6 and signaling information D-ch are with separated.In this case, data message D5, D6 exports to computer according to known way.Filling bit is added in the d-channel signaling information (D-ch), thereby a full 64kbps channel that remains to D channel processor 402 connects.According to the method identical with do description with reference to figure 3, the LAPD agreement of D channel processor 402 is handled information, and pure signaling information is exported to the software SW4 of switch (for example private branch exchange).
In a preferred embodiment, the compression set 313 of switch 300, Deplexing apparatus 315 and D channel processor 302 are distributed on the common circuit board, for example so-called voice compression unit VCU plate; Under this particular case, it comprises compression function, but situation is not all identical with Fig. 3, however, has still adopted this title.The multiplexer 309 of switch 300 is on another piece (VCU) plate.In addition, the demodulation multiplexer 409 of second switch 400, decompressing device 413 and D channel processor 402 are distributed on the common circuit board (VCU), and multiplexer 415 is on another piece circuit board.Usually can think corresponding respectively circuit board of the every pair of input and output or VCU plate.In a particular embodiment, every block of sort circuit plate is handled a 64kbit channel.But, in another embodiment, DEMUX309 can be positioned on the same circuit board with D channel processor 302, MUX315 and compression set 313.
A D channel processor should be handled 32 channels at least, three channels of other on for example same circuit board and from the channel of other circuit board.A circuit board (circuit board that for example is called VCU) (is 303 by switch and interface board here preferably; 403) connect.It can also handle other used when overflowing situation channel.The D channel can be with any Channel Transmission.
Accompanying drawing has only illustrated a time slot of transmission between switch 300 and switch 400.But as mentioned above, in a PCM multiplex system, 32 time slots are arranged between the VCU plate.For example, suppose and if the VCU plate of corresponding number is arranged in each switch, just can use 31 time slots to transmit compressed voice according to using a time slot with reference to figure 4 described methods.The combination in any that perhaps more time slot is used for speech and data and signaling information or data and signaling information etc.Equally other any aspect, invention all is not limited to the embodiment described in the accompanying drawing, for example in Fig. 4, can compress the speech that two 8 bit speech informations are called out and do not had to compress in compression set, perhaps switch does not constitute the device that starts of any connection yet.Data also may be more or less in addition, but one of skill in the art must know that they all can realize in research during with reference to the described embodiment of each figure (for example Fig. 4).And might not use 1: 4 compression ratio, compression in 1: 8 or compression in 1: 2 or the like also are to adopt.
In addition, though embodiment describes with reference to ISDN D channel, invention can also be used to use any other system of common channel signalling channel certainly.
An advantage of the invention is that can effectively utilize can hirable bandwidth. Another advantage The transmission speed that is signaling information can be faster than existing system so far, and in preferred enforcement In the example, can distribute as required remaining bandwidth. Also having an advantage is to compare with existing system, Only need a kind of transfer resource of management.
Under the prerequisite that does not break away from the claim scope, can also adopt variety of way many at other Change invention the aspect.
Claims (33)
1. be used at least a kind of switch (10 with the form exchange message of data and signaling information; 20; 100; 200; 300; 400), wherein signaling information has a part at least at common channel signalling channel connection line (14; 24; 106; 206; 306; 406) go up transmission, this device is characterised in that
Described switch (10; 20; 100; 200; 300; 400) comprise and be used to handle described common channel signalling channel connection line (14; 24; 106; 206; 306; The signal processing device (12 of the signaling information 406); 22; 102; 202; 302; 402), be used to handle go to/from the DAA (11 of the data of plurality of data interface; 21; 101; 201; 301; 401), described DAA also comprises the device that is used to handle the signaling information on the common channel signalling channel, for example additional access device, and replacing the idle information on the common channel signalling channel or the device of filling information with data message, a data resource is used as data and signaling information simultaneously.
2. according to the switch of claim 1, it is characterized in that
Described DAA (11; 21; 101; 201; 301; 401) comprise PSE.
3. according to the switch of claim 2, it is characterized in that
Described data message and signaling information are by the described PSE (11 on the data repeated link; 21; 101; 201; 301; 401) exchange.
4. according to the switch of above-mentioned arbitrary claim, it is characterized in that
With idle bandwidth, be to be not used on the common channel signalling channel to transmit bandwidth legal or useful signaling information and be used for data information.
5. according to the switch of above-mentioned arbitrary claim, it is characterized in that
DAA and signaling information processing unit are by a full rate common channel signalling channel connection line (14; 14 '; 24; 106; 206; 306; 406) communicate exchange message.
6. according to the switch of claim 5, it is characterized in that
When to signal processing device (202; When 402) transmitting signaling information, comprise the DAA (201 that replaces the described device of idle information or filling bit with data message; 401) can also produce idle information, filling bit for example is to be maintained to described signal processing device (202; 402) full rate connects.
7. according to the switch of claim 6, it is characterized in that
The common channel signalling channel is an ISDN D channel.
8. according to the switch of claim 7, it is characterized in that
The D channel as a 64kbps channel at connection line (14; 14 '; 24; 106; 206; 306; 406) go up transmission, 64kbps is a full rate D channel transmission rate.
9. according to the switch of claim 7, it is characterized in that
If the D channel comprises the idle information such as filling bit, when signaling information when the signaling processing unit sends, these information will be removed in DAA, and be replaced by data message; When signal processing device transmits signaling information, data message is removed, and filling information for example filling bit be added into.
10. according to the switch of above-mentioned arbitrary right correspondence, it is characterized in that
At least data message and signaling information are exchanged, and by comprising the data connecting line road (15 such as full rate or sub-rate channel; 15 '; 31; 108; 317) send to another switch.
11. the switch according to claim 10 is characterized in that
Data link connects and comprises X.25 a protocol link or a frame relay link.
12. the switch according to above-mentioned arbitrary claim is characterized in that
The priority of signaling information is higher than data message.
13. the switch according to above-mentioned arbitrary claim is characterized in that
DAA (11; 21; 101; 301) receive from data-interface for example V.24, the information of Ethernet, token ring.
14. the switch according to above-mentioned arbitrary claim is characterized in that
It also provides the speech exchange.
15. the switch according to claim 14 is characterized in that
It comprises signaling collating unit (30; 309,315; 409,415), compressed voice can exchange with compressed format when not decompressing.
16. the switch according to claim 15 is characterized in that
Described signaling collating unit comprises multiplexer (30 at least; 315; 415), be used for the multiplexing sub-rate channel that transmits at each time slot, all have only partial bit to be used for transmission information in every strip rate channel.
17. the switch according to claim 16 is characterized in that
Make up on many subchannel that sub-rate channel transmits on a full rate transmission line or in public time slot and export.
18. the switch according to claim 15 or 16 is characterized in that
In the described multiplexer of described signal processing apparatus, compressed voice and data and signaling information merge.
19., it is characterized in that according to any one switch among the claim 14-18
It also comprises compression/decompression compression apparatus (27; 313; 413), be used to handle Incoming/out voice call, at this moment switch constitutes an originate/terminate device.
20., it is characterized in that according to any one switch among the claim 14-19
Described signal collating unit also comprises Deplexing apparatus (309; 409), be used for the plurality of sub rate channel that the public time slot that comprises described compressed voice at transmits is separated into some independent time slots, so that exchange; The sub-rate channel of process exchange is at described multiplexer (309 in the independent time slot; 409) before the output, comprise the multiplexing or merging of sub-rate channel of compressed voice and/or signaling information and/or data in other.
21. the switch according to above-mentioned arbitrary claim is characterized in that
The connection line (15 that connects described switch and another switch; 15 '; 108; 317; 417) comprise a special circuit, for example wall scroll 64kbps circuit.
22. the switch according to above-mentioned arbitrary claim is characterized in that
DAA (11; 21; 101; 201; 301; 401) be positioned at the switching matrix of private branch exchange (PBX).
23. the switch according to above-mentioned arbitrary claim is characterized in that
The signaling information processing unit is arranged on the circuit board that comprises the function of information in speech information compression/de-compression and/or the merging/segregated channel.
24. the network switching node (10 in comprising the communication network of private branch exchange; 20; 100; 200; 300; 400), this switch has switching matrix and the DAA (11 that is used to insert data; 21; 101; 201; 301; 401) and the signal processing device (12 that is used to receive/send signaling information; 22; 102; 202; 302; 402), this node is characterised in that
DAA (11; 21; 101; 201; 301; 401) be positioned at the switching matrix of private branch exchange, go to/from signal processing device (12; 22; 102; 202; 302; 402) signaling information is via DAA (11; 21; 101; 201; 301; 401) use sub-rate information channel to transmit, this DAA comprises the device that is used to start signaling information access and processing signaling information, and the remaining bandwidth on the signaling channel is used to data information transfer.
25. the network switching node according to claim 24 is characterized in that
The described device that provides signaling information to insert can also be kept a full rate common channel signalling channel between DAA and signal processing device, described device provides from/the function of the idle information of removal/interpolation or filling bit to the common channel signalling channel.
26. the network switching node according to claim 25 is characterized in that
Full rate communication channel between DAA and the signaling information processing unit comprises a full rate 64kbps ISDN D channel.
27., it is characterized in that according to any one network switching node among the claim 25-26
It also comprises the device (30 with the form exchange compressed voice that does not decompress; 309,315; 409,415), compressed voice, data and the signaling information special circuit that for example comprises wall scroll 64kbps channel by a full speed channel to/transmit from other switching node.
28. comprise the communication network of first and second switching nodes at least, data message and signaling information transmit between these nodes, this network is characterised in that
Each switching node comprises a switching matrix, the DAA that is used for deal with data and signaling information is located in this matrix, each switching node also comprises the signal processing device that communicates by the common channel signalling channel, DAA and signal processing device, in each DAA, thereby provide with data message replace useless signaling information for example filling bit make the described channel width do not used can be used for the device of data message by legal signaling information, first and second switching nodes communicate by the connection line that wherein has at least data and signaling information to transmit in channel.
29. the communication network according to claim 28 is characterized in that
At least some switching node comprises the device that is used for exchange compressed voice when speech not being decompressed, and speech, data and signaling information transmit between two nodes by a public time slot on the special circuit.
30. the method for data information and signaling information at least between first network node in communication network and second network node at least, described method comprises step:
-at the DAA receiving data information that is arranged in the first node switching matrix with from the signaling information of the signal processing device that is positioned at described first switch,
-in described DAA, check by signaling channel whether comprise idle information or filling information from the signaling information that signal processing device receives,
-replace idle information with data message,
-send data message and legal signaling information to second network node.
31. the method according to claim 30 also comprises step:
-in the DAA of first network node, receive grouping signaling information and data message from second network node,
-mask data information and signaling information,
-if desired, produce free time or filling information so that use all capacity of common channel signalling channel,
-signal processing device in first network node sends useful signaling information and/or idle information.
32., it is characterized in that it also comprises step according to the method for claim 30 or 31:
-make the priority of signaling information be higher than data message.
33., it is characterized in that it also comprises step according to any one method among the claim 30-32:
-receive the speech information in the sub-rate channel and they are arranged in the different time-gap, the corresponding time slot of every strip rate channel,
The described sub-rate channel of-exchange,
The described sub-rate channel of-merging and other comprise the sub-rate channel of speech and/or data and/or signaling information,
-send speech and/or data and/or signaling information from a network node to another network node by for example full speed channel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9603598A SE511344C2 (en) | 1996-10-01 | 1996-10-01 | Device and method for handling information in a communication network and a communication network comprising such a device |
| SE96035985 | 1996-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1239637A true CN1239637A (en) | 1999-12-22 |
Family
ID=20404103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97180241 Pending CN1239637A (en) | 1996-10-01 | 1997-09-26 | Arrangement for interleaving data and signalling information |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1010347A1 (en) |
| CN (1) | CN1239637A (en) |
| AU (1) | AU721715B2 (en) |
| NO (1) | NO991532L (en) |
| SE (1) | SE511344C2 (en) |
| WO (1) | WO1998015157A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960736A (en) * | 2008-02-28 | 2011-01-26 | Lg电子株式会社 | Method for multiplexing data and control information |
| US8400978B2 (en) | 2008-02-28 | 2013-03-19 | Lg Electronics Inc. | Method for multiplexing data and control information |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1174000A1 (en) * | 1999-04-28 | 2002-01-23 | Siemens Aktiengesellschaft | Multiplex system having layer 1 transmission channels and signaling transmission channels |
| IL137864A (en) * | 2000-08-15 | 2004-12-15 | Eci Telecom Ltd | Method for signaling information compression in a telecommunication network |
| CN108988977B (en) * | 2017-05-31 | 2021-06-08 | 中兴通讯股份有限公司 | Method, device and system for transmitting service flow in flexible Ethernet protocol |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2025645C (en) * | 1989-09-19 | 1999-01-19 | Keiji Fukuda | Control channel terminating interface and its testing device for sending and receiving signal |
| EP0495128B1 (en) * | 1990-08-06 | 1996-03-06 | Fujitsu Limited | Communication equipment having repeat switching function |
| JP3082421B2 (en) * | 1992-05-14 | 2000-08-28 | 日本電気株式会社 | Digital electronic private branch exchange |
-
1996
- 1996-10-01 SE SE9603598A patent/SE511344C2/en not_active IP Right Cessation
-
1997
- 1997-09-26 AU AU45786/97A patent/AU721715B2/en not_active Ceased
- 1997-09-26 WO PCT/SE1997/001621 patent/WO1998015157A1/en not_active Application Discontinuation
- 1997-09-26 EP EP97944248A patent/EP1010347A1/en not_active Withdrawn
- 1997-09-26 CN CN 97180241 patent/CN1239637A/en active Pending
-
1999
- 1999-03-29 NO NO991532A patent/NO991532L/en not_active Application Discontinuation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960736A (en) * | 2008-02-28 | 2011-01-26 | Lg电子株式会社 | Method for multiplexing data and control information |
| US8400978B2 (en) | 2008-02-28 | 2013-03-19 | Lg Electronics Inc. | Method for multiplexing data and control information |
| CN101960736B (en) * | 2008-02-28 | 2013-07-31 | Lg电子株式会社 | Method for multiplexing data and control information |
| US8547923B2 (en) | 2008-02-28 | 2013-10-01 | Lg Electronics Inc. | Method for multiplexing data and control information |
| US8891354B2 (en) | 2008-02-28 | 2014-11-18 | Lg Electronics Inc. | Method for multiplexing data and control information |
| US9775136B2 (en) | 2008-02-28 | 2017-09-26 | Lg Electronics Inc. | Method for multiplexing data and control information |
| US10159064B2 (en) | 2008-02-28 | 2018-12-18 | Lg Electronics Inc. | Method for multiplexing data and control information |
Also Published As
| Publication number | Publication date |
|---|---|
| NO991532D0 (en) | 1999-03-29 |
| EP1010347A1 (en) | 2000-06-21 |
| AU4578697A (en) | 1998-04-24 |
| AU721715B2 (en) | 2000-07-13 |
| SE511344C2 (en) | 1999-09-13 |
| WO1998015157A1 (en) | 1998-04-09 |
| SE9603598L (en) | 1998-04-02 |
| NO991532L (en) | 1999-06-01 |
| SE9603598D0 (en) | 1996-10-01 |
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