CN102137078A - Control device of wireless network transmission multimedia streaming, communication system and method - Google Patents
Control device of wireless network transmission multimedia streaming, communication system and method Download PDFInfo
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Abstract
The invention provides a control device of wireless network transmission multimedia streaming, a communication system and a method. The control device of wireless network transmission multimedia streaming is cooperated with base station conveying/ receiving data and comprises an analysis unit, a calculation unit and a processing unit, wherein the analysis unit analyzes a multimedia streaming control signal into an identification code and a media description for multimedia streaming; the calculation unit calculates a bandwidth required by the multimedia streaming via the media description; the processing unit sends a quality request order to the base station according to the bandwidth; and the base station is requested to provide corresponding bandwidth quality service to the multimedia streaming of the identification code. The invention also provides a communication system and a communication method of the wireless network transmission multimedia streaming.
Description
Technical field
The present invention relates to a kind of Network Transmission control device, communication system and method, particularly relate to a kind of control device, communication system and method for wireless network transmissions multimedia series flow.
Background technology
Consult shown in Figure 1, the wideband network connection technology is divided into wired and wireless at present, aspect the wired broadband connection technology, use terminal 711 (as: household PC) normally to connect communication networks 8, allow whereby and use the data that terminal 71 can access communication networks 8 with the modem 712 of for example T1, xDSL or cable.
Aspect the radio wideband connection technology, global intercommunication microwave access (WorldwideInteroperability for Microwave Access; Be called for short WiMAX), its standard specification claims IEEE 802.16 series standards, mainly is at base station (Base Station; Abbreviation BS) 80 last mile (Last mile) environment to use terminal 81 regions 9 provide the radio wideband service, and its classification is divided into portable and fixed again.
Portable standard is called IEEE 802.16e, the main portable terminal 811 that uses at for example mobile phone; Fixed standard is called IEEE 802.16d, mainly is to be connected user's platform (Subscribe Station using between terminal 81 and the base station 80; Be called for short SS) 82, by user's platform 82 as the use terminal 81 in each zone 9 and the media of wireless connections communication network 8.
Yet, the multimedia series flow transmission is stressed high-quality, but under present IEEE 802.16d standard, do not have the transmitting multimedia crossfire can guarantee the solution that frequency range can effectively utilize as yet, so the disappearance that prior art is derived is: the multimedia series flow that uses terminal 81 the to receive real quality service that obtains of having no idea via user's platform 82.
This shows that the device of above-mentioned existing wireless network transmissions multimedia series flow, communication system and method obviously still have inconvenience and defective, and demand urgently further being improved in product structure, method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product and method do not have appropriate structure and method to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of control device, communication system and method for new wireless network transmissions multimedia series flow, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to, the device transmitting multimedia crossfire frequency range that overcomes existing Network Transmission multimedia series flow can't be guaranteed the effectively disappearance of utilization, and provide a kind of control device of new wireless network transmissions multimedia series flow, technical problem to be solved is to make it can reach the optimization bandwidth manager, is very suitable for practicality.
Another object of the present invention is to, overcome existing communication system transmits multimedia series flow frequency range and can't guarantee the effectively disappearance of utilization, and provide a kind of communication system of new wireless network transmissions multimedia series flow, technical problem to be solved is to make it can reach the optimization bandwidth manager, thereby is suitable for practicality more.
A further object of the present invention is, overcome existing communication means transmitting multimedia crossfire frequency range and can't guarantee the effectively disappearance of utilization, and provide a kind of communication means of new wireless network transmissions multimedia series flow, technical problem to be solved is to make it can reach the optimization bandwidth manager, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.The control device of a kind of wireless network transmissions multimedia series flow that proposes according to the present invention is to cooperate base station transmission/reception data; Described control device comprises: a resolution unit parses the control signal of multimedia series flow one identification code and a media description of multimedia series flow; One computing unit is according to the required frequency range of described media description computing multimedia series flow; And a processing unit, send a quality request instruction according to frequency range and give base station, require base station to provide corresponding frequency range quality service to give the multimedia series flow of described identification code whereby.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, the control device of aforesaid wireless network transmissions multimedia series flow, the formula that wherein said computing unit calculates frequency range is: (coding per second output bit number+(per second package number) * (each layer header length summation) * 8) * (1+ wideband transmission cost proportion).
Preferably, the control device of aforesaid wireless network transmissions multimedia series flow, wherein said resolution unit is according to SIP, MGCP or signaling protocol format analysis control signal H.323.
The object of the invention to solve the technical problems also realizes by the following technical solutions.The communication system of a kind of wireless network transmissions multimedia series flow that proposes according to the present invention, described communication system comprises: a control device, comprise: a resolution unit, an identification code and a media description that parses multimedia series flow with the control signal that receives will be sent, one computing unit, according to the required frequency range of described media description computing multimedia series flow, and a processing unit, a quality request instruction sent according to frequency range; And a base station, the receiving quality request instruction also provides corresponding frequency range quality service to give the multimedia series flow of described identification code in view of the above.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, the communication system of aforesaid wireless network transmissions multimedia series flow, wherein said communication system comprises that also one uses terminal, and using terminal is one to connect the callee or the first speaker of another multimedia series flow end points by user's platform and base station, and a voice-over-net of setting up between first speaker and callee conversation, a video calling and/or a fax through internet are served to obtain the frequency range quality by described control device control.
Preferably, the communication system of aforesaid wireless network transmissions multimedia series flow, wherein said control device is a networking telephone, an Internet video device or a fax through internet device.
Preferably, the communication system of aforesaid wireless network transmissions multimedia series flow, the formula that wherein said computing unit calculates frequency range is: (coding per second output bit number+(per second package number) * (each layer header length summation) * 8) * (1+ wideband transmission cost proportion).
Preferably, the communication system of aforesaid wireless network transmissions multimedia series flow, wherein said resolution unit are according to SIP, MGCP or signaling protocol format analysis control signal H.323.
The object of the invention to solve the technical problems realizes in addition more by the following technical solutions.The communication means of a kind of wireless network transmissions multimedia series flow that proposes according to the present invention, be to be matched with user's platform between an at least one use terminal and a base station to carry out, use terminal to comprise a first speaker and a callee, described communication means may further comprise the steps: (a) user's platform receives the control signal of the multimedia series flow that uses terminal transmission/reception and parses an identification code and a media description of multimedia series flow; (b) user's platform is according to the required frequency range of described media description computing multimedia series flow; And (c) user's platform sends a quality request instruction according to frequency range and gives base station and provide corresponding frequency range quality service to give the multimedia series flow of described identification code to require base station.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, the communication means of aforesaid wireless network transmissions multimedia series flow, wherein said communication means also comprise the steps: to set up between (d) first speaker and the callee voice-over-net conversation, video calling or fax through internet.
Preferably, the communication means of aforesaid wireless network transmissions multimedia series flow, wherein said communication means comprises the steps: that also (e) is in voice-over-net conversation, video calling or fax through internet, first speaker and callee are changed by CODER-DECODER, and obtain the frequency range quality service of base station renewal to transmit new coded data by user's platform.
Preferably, the communication means of aforesaid wireless network transmissions multimedia series flow, the formula that wherein said communication means calculates frequency range is: (coding per second output bit number+(per second package number) * (each layer header length summation) * 8) * (1+ wideband transmission cost proportion).
Preferably, the communication means of aforesaid wireless network transmissions multimedia series flow, wherein said user's platform are according to SIP, MGCP or signaling protocol format analysis control signal H.323.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows:
For achieving the above object, the invention provides a kind of control device of wireless network transmissions multimedia series flow, described control device is to cooperate base station transmission/reception data, and control device comprises a resolution unit, a computing unit and a processing unit; Resolution unit parses the control signal of multimedia series flow one identification code and a media description of multimedia series flow; The frequency range that computing unit is required according to media description computing multimedia series flow; Processing unit sends a quality request instruction according to frequency range and gives base station gives identification code with the frequency range quality service that correspondence is provided multimedia series flow.
In addition, for achieving the above object, the present invention also provides a kind of communication system of wireless network transmissions multimedia series flow, and it comprises a control device and a base station; Described control device comprises a resolution unit, a computing unit and a processing unit; Resolution unit parses the control signal of multimedia series flow one identification code and a media description of multimedia series flow; The frequency range that computing unit is required according to media description computing multimedia series flow; Processing unit sends a quality request instruction according to frequency range and gives base station; Base station gives the multimedia series flow of identification code according to the quality request instruction that user's platform of receiving sends so that corresponding frequency range quality service to be provided.
Moreover, for achieving the above object, the present invention provides a kind of communication means of wireless network transmissions multimedia series flow again, be to be matched with user's platform between a transmitting terminal and a base station to carry out, described communication means comprises the steps: the control signal of the multimedia series flow that (a) user platform receiving end/sending end sends and parses an identification code and a media description of multimedia series flow; (b) user's platform frequency range required according to media description computing multimedia series flow; And (c) user's platform sends a quality request instruction according to frequency range and gives base station and provide corresponding frequency range quality service to give the multimedia series flow of identification code to require base station.
By technique scheme, the control device of wireless network transmissions multimedia series flow of the present invention, communication system and method have following advantage and beneficial effect at least:
1, the control device of wireless network transmissions multimedia series flow of the present invention provides corresponding frequency range quality service to give the multimedia series flow of identification code by requiring base station, and then reaches the purpose of optimization bandwidth manager.
2, the communication system of wireless network transmissions multimedia series flow of the present invention provides corresponding frequency range quality service to give the multimedia series flow of identification code, and then reaches the purpose of optimization bandwidth manager.
3, the communication means of wireless network transmissions multimedia series flow of the present invention provides corresponding frequency range quality service to give the multimedia series flow of identification code by requiring base station, and then reaches the purpose of optimization bandwidth manager.
4, integral body of the present invention is resolved, is calculated by control device and requires base station to come the transmitting multimedia crossfire with the quality service of corresponding frequency range, not only can have the service quality of multimedia series flow automatically, and can guarantee effective utilization of frequency range.
In sum, the invention relates to a kind of control device, communication system and method for wireless network transmissions multimedia series flow.The control device of this wireless network transmissions multimedia series flow cooperates base station transmission/reception data, and control device comprises a resolution unit, a computing unit and a processing unit; Resolution unit parses the control signal of multimedia series flow one identification code and a media description of multimedia series flow; The frequency range that computing unit is required according to media description computing multimedia series flow; Processing unit sends a quality request instruction according to frequency range and gives base station, requires base station to provide corresponding frequency range quality service to give the multimedia series flow of identification code whereby.The present invention also provides a kind of communication system and communication means of wireless network transmissions multimedia series flow.The present invention has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the system schematic of the present wideband network connection technology of explanation.
Fig. 2 is in the explanation preferred embodiment of the present invention, the system block diagram of the communication system of wireless network transmissions multimedia series flow.
Fig. 3 is the system block diagram of the control device of explanation wireless network transmissions multimedia series flow of the present invention.
Fig. 4 is the flow chart of first embodiment of the communication means of explanation wireless network transmissions multimedia series flow of the present invention.
Fig. 5 is the flow chart of second embodiment of the communication means of explanation wireless network transmissions multimedia series flow of the present invention.
Fig. 6 is the flow chart of control program of the communication means of wireless network transmissions multimedia series flow of the present invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of control device, communication system and method, structure, method, step, feature and the effect thereof of the wireless network transmissions multimedia series flow that foundation the present invention is proposed, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
It is noted that the multimedia series flow service range that the following embodiment of the invention is mentioned is so long as the multimedia of instant transmission (sound, image or picture) data all can be the multimedia series flow service on network; Be with SIP, MGCP or the multimedia series flow set up of the control signal (Control Signals) of signaling protocol (Signaling Protocol) H.323 in the application, can be (but being not limited to) Web TV, use browser to view and admire image or categories such as sound, video conference, the networking telephone or fax through internet.
In addition, it for example is that the frequency range that following the present invention mentioned keeps the kind of serving with quality: the bandwidth allocation service of non-request (Unsolicited Grant Service; UGS) be the immediate service that is used for the constant bandwidth request, data flow has the long and transmission cycle of fixed packet; Instant poll services (Real-time Polling Service; RtPS) be used for immediate service, compare with the bandwidth allocation service of non-request, the data flow of instant poll services periodically sends, but each data packet length difference that sends, be the service of rate-compatible, have higher transmission rate, be used for VoIP audio frequency or MPEG Video service; Non-instant poll services (Non-real-time Polling Service; NrtPS) to delaying time insensitive and not needing the service of constant rate of speed, as the FTP service, certain rate requirement is arranged, but can tolerate certain time-delay, each data packet length that sends is also different; With the service of doing one's best (Best effort; BE), be used for that service does not have specific demand to quality, the service that priority is minimum is dispatched, as short message, E-mail etc.
See also shown in Figure 2, be the explanation preferred embodiment of the present invention in, the system block diagram of the communication system of wireless network transmissions multimedia series flow.In preferred embodiment of the present invention, the communication system 100 of wireless network transmissions multimedia series flow comprises at least one user's platform (SS) 1, a base station (BS) 2 and at least one use terminal 3; Wherein, user's platform 1 is as using the up crossfire of terminal 3 transmission to give base station 2 or obtain the media of the descending crossfire of base station 2 to use terminal 3 between use terminal 3 and base station 2.
User's platform 1 comprises a processor 1, a network transmission module 11, a radio frequency transmission module 12, a memory module 13 and an interface module 14; Processor 1 is coordinated each element running in order to master control; Network transmission module 11 in order to use terminal 3 to interconnect and transmit data, comprise Ethernet entity interface for example and cooperate the wire rod of RJ45; Radio frequency transmission module 12 comprises for example radio-frequency receiving-transmitting element in order to carry out the communication of wideband network data with base station 2; Memory module 13 comprises elements such as a flash memory 131 and a synchronous dynamic random access memory (SDRAM) 132 in order to the data of record network signal transmission/reception; Interface module 14 comprises for example SPI interface, sequence interface and JTAG interface etc. in order to the operation as test or simple and easy control.
Seeing also shown in Figure 3ly, is the system block diagram of control device of explanation wireless network transmissions multimedia series flow of the present invention.Control device 5 is that a networking telephone, an Internet video machine, a network facsimile machine or other are used for the radio wideband subscriber equipment of transmitting multimedia crossfire, it is applied to user's platform 1 as shown in Figure 2, the integration of using terminal 3 or user's platform 1 and using terminal 3, and the multimedia series flow line of monitoring transmission itself and the effect that provides quality to serve can be provided concurrently; Control device 5 is equipped with the program software in order to the communication means of carrying out wireless network transmissions multimedia series flow of the present invention, and relative program software comprises a string flow database 6, a multimedia series flow monitoring modular 51, a Linux network sub-layer 52, a quality control module 53, an Ethernet driver module 541 and a radio wideband driver module 542; Multimedia series flow monitoring modular 51 comprises a resolution unit 511, a computing unit 512 and a processing unit 514.
See also Fig. 2 and shown in Figure 3, multimedia series flow monitoring modular 51, Ethernet driver module 541 and radio wideband driver module 542 all are positioned at core space (Kernel space), are respectively as the network communication media with Linux network sub-layer 52 and quality control module 53; In addition, Ethernet driver module 541 is as the communication media of Linux network sub-layer 52 with network transmission module 11; 542 of radio wideband driver modules are as the communication media of Linux network sub-layer 52 with radio frequency transmission module 12.
Aspect the routine processes core of multimedia series flow monitoring modular 51, resolution unit 511 is to use the control signal (Control signal) of the multimedia series flow that terminal 3 sends to parse one " identification code " (Call ID) of the multimedia series flow that uses terminal 3 and one " media description " (Mediadescription); The example of " identification code " is 417c60fc_12371c9323e@MTYTEST03 for example, and still, the identification code of multimedia series flow is not limited to aforesaid form, so long as unique code is just passable; In addition, information with SIP and MGCP agreement is example, its " media description " all is to use SDP (service discovery communication protocol) package, main purpose is to be used for allowing both call sides know thin portion information required when setting up talk by the SDP package, therefore no matter is that the information of Session Initiation Protocol or MGCP agreement all is to parse the SDP package to obtain " media description ".
The communication means of wireless network transmissions multimedia series flow of the present invention is described in detail as follows:
About " media description " example of signaling protocol T.38 be:
Then, the analysis result of " media description " of aforementioned multimedia series flow is issued computing unit 512, when computing unit 512 is received " media description ", carry out after the computing the frequency range notifier processes unit 514 that calculates according to " media description ", its computation paradigm is described as follows.
The frequency range computing formula is: (coding per second output bit number+(per second package number) * (each layer header length summation) * 8) * (1+ wideband transmission cost proportion); Wherein, " coding per second output bit number " (codec bitrate) is every kind of per second output bit number that coded system is different, and the coded system of image is t38 (m=image 1296 udptl t38) and per second output bit number is 14400 (a=T38maxBitRate:14400) in the example; " per second package number " can be calculated by (1000/ package interbody spacer time), the package interbody spacer time (packet time) is meant the time of how long sending a package at interval, the common package time is 10ms, 20ms or 30ms, above therefore the packet interval time do not use default 20ms in the SDP example; " each layer header length summation " is the summation of each layer of network header length, in the last example t38 agreement (m=image 1296 udptl t38), t38 is enclosed within UDP layer and the IP layer, and summation is 12 (RTP header length)+8 (UDP header length)=20bytes; If voice messaging then is enclosed in RTP layer and UDP layer and IP layer, summation is 12 (RTP header length)+8 (UDP header length)+20 (IP header length)=40; " wideband transmission cost proportion " preset value is 15%, because of the excess loss (Overhead) of wideband (Wimax) and instantaneous transmission agreement (RTCP) is 115%.
SIP and MGCP use the example of SDP:
Can learn by the content of resolving SDP, the employed coded system of multimedia series flow is that PCMU and sampling rate are per second 8,000 times (going up the PCMU/8000 in the example), therefore the per second of the coded system of PCMU output bit number (bit rate) is the sampling and 8 bits of at every turn taking a sample of per second 8000 times, is exactly 64kbps (8000*8).But the header file that when actual transmissions, also comprises each agreement, in this example, use Real-time Transport Protocol (m=audio 49170 RTP 0 8), all headers are IP layer 20bytes, UDP layer 8bytes and RTP layer 12bytes are exactly (20+8+12) bytes, and every 20ms can send a package (going up a=ptime:20 among the routine SDP), so per second is sent (1000/20) individual package.Therefore each layer header institute frequency range that can take is ((1000/20) * (20+8+12) * 8) bps, and the frequency range of Shi Yonging is added the excess loss of use radio wideband environment and is altogether: (64000+ (1000/20) * (20+8+12) * 8) * 1.15=92kbps; For example T.38 the per second of encoder output bit is counted 14.4kbps (a=T38maxBitRate:14400 in the example), and each layer package frequency range and radio wideband loss are the same, and therefore calculating frequency range is (14400+ (1000/20) * (20+8) * 8) * 1.15=29440bps.
H.323 example:
Wherein, 160 refer to the maximal audio frame number (maximum number of audioframes per packet) of each package, and calculating frequency range is (64000+ ((64000/8)/160) * (20+8+12) * 8) * 115%=92kbps.
Receive the result of calculation of computing unit 512 when processing unit 514, and after As-received platform 2 transmits the network signal of confirming frequency range, just " identification code " according to multimedia series flow is sent to use terminal 3, give Linux network sub-layer 52 according to instantaneous transmission agreement (RTP) transmission one multimedia series flow data on the one hand, be temporary in stream data storehouse 6 then; On the other hand, processing unit 514 controlling performance control modules 53 are sent a quality control (QoS Control) instruction and are sent to radio wideband driver module 542, and hardware components then is to send quality control by radio frequency transmission module 12 to instruct to base station 2.
Therefore, when using terminal 3 to desire externally to set up for example voice call (VoIP), video or fax multimedia series flows such as (FoIP), user's platform 1 can reach the mode of " media description " with " identification code " of detecting multimedia series flow and judge the multimedia series flow that the use terminal 3 of its connection is set up; Then, user's platform 1 can require corresponding frequency range and service to base station 2, provides the quality service for this multimedia series flow whereby.
Seeing also shown in Figure 4ly, is the flow chart of first embodiment of the communication means of explanation wireless network transmissions multimedia series flow of the present invention.First embodiment of the communication means of wireless network transmissions multimedia series flow of the present invention comprises the steps:
Use terminal 3 to send and set up the control signal (step S101) that the multimedia series flow line is invited, for example INVITE/SDP of SIP communication protocol; When package by user's platform 1 time, user's platform 1 is resolved " media description " of control signal, and calculates the required frequency range of this crossfire down direction with method of service and write down (step S102); Control signal after user's platform 1 is handled can continue to give base station 2 (step S103), and then, the receiving terminal of multimedia series flow line is then accepted this invitation and responded OK (step S104); At this moment, user's platform 1 equally also needs to resolve this package, and calculates up frequency range reservation and quality type service (step S105).
User's platform 1 has been obtained after the information of up and descending multimedia series flow, just require the frequency range of multimedia series flow line to keep and quality service (step S106) to base station 2, for example: the flow that keeps 92kbps for the line of step S110 guarantees and transmits this line with the priority service quality of rtPS, and the response of control signal transferred to use terminal 3 (step S107), if base station 2 has enough frequency ranges, will promise this frequency range and quality service request, and respond and give user's platform 1 (step S108), so user's platform 1 just successfully provides frequency range required under the radio wideband environment to keep and quality service (step S109); After this, when multimedia series flow begins to transmit,, frequency range successfully obtains, so this multimedia series flow can transmit (step S110) under the environment that the quality service is arranged because keeping with the quality service; If when the transmission of ending multimedia crossfire, user's platform 1 can be detected for example SIP BYE (step S111), and notice base station 2 (step S112) stops the quality service of multimedia series flow and frequency range are kept, allow base station 2 the frequency range resource can be kept line to other needs, at last, the finishing control signal of multimedia series flow is transferred to an other end (step S113) on the network.
Seeing also shown in Figure 5ly, is the flow chart of second embodiment of the communication means of explanation wireless network transmissions multimedia series flow of the present invention.Second embodiment of the communication means of wireless network transmissions multimedia series flow of the present invention is Fax over IP (to call FoIP in the following text), in the situation of FoIP running, use terminal 3 to comprise a callee and a first speaker, in this preferred embodiment, use terminal 3 to be meant, but other embodiment do not exceed with first speaker by the first speaker of user's platform 1 and base station 2 connection callees.
First speaker and callee both sides set up a voice-over-net (VoIP) conversation earlier, and then, first speaker in the conversation and callee are transformed into a fax through internet agreement (as T.38) to begin to transmit the data of fax by CODER-DECODER (codec) again; In this preferred embodiment, voice-over-net conversation, a video calling and/or a fax through internet of setting up between first speaker and the callee served to obtain the frequency range quality by control device 5 controls, and communication means comprises the steps:
At first, the use terminal 3 of first speaker is initiated one and is talked about (step S201), for example INVITE/SDP of SIP communication protocol all; User's platform 1 calculates the required frequency range of this crossfire down direction and method of service and record (step S202) by resolving the control signal of using terminal 3 to initiate, control signal after the processing can continue to give base station 2 (step S203), then, the receiving terminal of VoIP (FoIP) conversation is then accepted this invitation and is responded OK (step S204); At this moment, user's platform 1 equally also needs to resolve this package, and calculates up frequency range reservation and quality type service (step S205); User's platform 1 has been obtained the data of up and descending multimedia series flow, just require the frequency range of multimedia series flow line to keep and quality service (step S206) to base station 2, for example: for the line of step S220 keeps the flow of 92kbps and transmits this line with the priority service quality of rtPS.
If base station 2 has enough frequency ranges, and successfully keep and the quality service is provided, will promise this frequency range and quality service request, and notify user's platform 1 to keep quality assurance successfully (step S208).And the response of control signal transferred to use terminal 3 (step S207); Finish with regard to successfully keeping for the frequency range and the quality service of FoIP VoIP in early stage conversation, successfully provide frequency range required under the radio wideband environment to keep and quality service (step 209); After VoIP conversation crossfire begins, because of keeping with the quality service, frequency range successfully obtains, so this VoIP conversation crossfire can transmission (step S220) under the environment that the quality service is arranged.
When VoIP converses successfully, when both sides will begin to transmit facsimile data, can send out a control signal that re-invites (step S221), for example Re-INVITE/SDP of SIP communication protocol again by the receiving terminal of VoIP (FoIP) conversation; User's platform 1 detects this control signal at this moment, and the crossfire transform coding mode that detects step S220 arrives T.38 agreement, and calculates up fax crossfire required frequency range reservation and quality service (step S222).
Then, to re-invite to send to and use terminal 3 (step S223), this re-invites coexist step S201 and step S221 is a SIP INVITE, use terminal 3 to send and respond to user's platform 1 (step S224), user's platform 1 calculates the required frequency range of descending fax crossfire to be kept and quality service (step S225); Then, user's platform 1 just requires frequency range to keep and quality service (step S226) to base station 2, for example: the flow that keeps 88kbps for the line of step S229 guarantees and transmits this line with the priority service quality of nrtPS, respond SIP 200 OK/SDP and give base station 2 (step S227), base station 2 is promised to respond to user's platform 1 (step S228) behind this frequency range and the quality service request.
When both sides begin to transmit the data of signaling protocol T.38, because frequency range and quality service are upgraded, therefore the data of fax can be transmitted (step S229) under suitable frequency range reservation and quality service environment, so, user's platform 1 just can upgrade the frequency range reservation according to new media description and reach the optimization frequency range with the quality service with this, avoids medium change frequency range waste afterwards or frequency range deficiency to cause the problem of quality decline.
It is shown in Figure 6 to cooperate Fig. 2 to consult, and Fig. 6 is the flow chart of control program of the communication means of wireless network transmissions multimedia series flow of the present invention.In the communication means of wireless network transmissions multimedia series flow of the present invention, the control program of user's platform 1 is described as follows:
For using terminal 3 aspects, user's platform 1 is received the control signal (step S301) of the initiation of multimedia series flow, and for example: SIP INVITE/SDP begins to calculate required frequency range of multimedia series flow and required quality type service (step S302); Do you then, judge whether this multimedia series flow line exists (step S303)? if it's not true, newly-increased this stream data (step S304) is to stream data storehouse 6; If these crossfire line data exist, then it is upgraded (step S306).
For base station 2 aspects, if the control signal that user's platform 1 is received is the response (step S307) to the control signal of multimedia series flow initiation, for example: SIP 200 OK, equally still need calculate frequency range and quality type service (step S308); Then, need obtain related with it multimedia series flow data and upgrade these data (step S309) to stream data storehouse 6; Then, do you judge whether this multimedia series flow line has been provided quality service (step S310)? if this line also failed call is crossed the quality service, then must notify quality service module 53 newly-increased frequency ranges and quality to serve to this multimedia series flow (step S311), if this line once required, also must keep and quality service (step S313) by the corrigendum frequency range.
For finishing transmitting multimedia crossfire aspect, user's platform 1 can be received the control signal (step S314) that stops multimedia series flow, at this moment must be with this multimedia series flow information by removing (step S315) in the stream data storehouse 6, and notice quality service module 53 finishes quality service and frequency range reservation (step S316) to this line.
In sum, program on user's platform 1 obtains the multimedia messages of crossfire by the control signal of handling multimedia series flow, and calculate required frequency range and service quality type so that the optimized quality service of multimedia series flow, frequency range and instantaneity to be provided, when multimedia series flow changes coded system (Codec) or medium type, also can find immediately and change the quality COS and frequency range remains into optimized situation, therefore can reach purpose of the present invention really.
By above explanation as can be known, the control device of wireless network transmissions multimedia series flow of the present invention, communication system and method did not only see in the past, also had following beneficial effect:
One, requires base station to come the transmitting multimedia crossfire by control device, can have the service quality of multimedia series flow automatically with the quality service of corresponding frequency range.
Two, the quality service by control device parsing, the corresponding frequency range of calculating comes the transmitting multimedia crossfire, can guarantee effective utilization of frequency range.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (13)
1. the control device of a wireless network transmissions multimedia series flow is to cooperate base station transmission/reception data; It is characterized in that: described control device comprises:
One resolution unit parses the control signal of multimedia series flow one identification code and a media description of multimedia series flow;
One computing unit is according to the required frequency range of described media description computing multimedia series flow; And
One processing unit sends a quality request instruction according to frequency range and gives base station, requires base station to provide corresponding frequency range quality service to give the multimedia series flow of described identification code whereby.
2. the control device of wireless network transmissions multimedia series flow as claimed in claim 1 is characterized in that the formula of wherein said computing unit calculating frequency range is: (coding per second output bit number+(per second package number) x (each layer header length summation) x8) x (1+ wideband transmission cost proportion).
3. the control device of wireless network transmissions multimedia series flow as claimed in claim 1 is characterized in that wherein said resolution unit is according to SIP, MGCP or signaling protocol format analysis control signal H.323.
4. the communication system of a wireless network transmissions multimedia series flow, it is characterized in that: described communication system comprises:
One control device comprises:
One resolution unit will send an identification code and a media description that parses multimedia series flow with the control signal that receives,
One computing unit, according to the required frequency range of described media description computing multimedia series flow, and
One processing unit sends a quality request instruction according to frequency range; And
One base station, the receiving quality request instruction also provides corresponding frequency range quality service to give the multimedia series flow of described identification code in view of the above.
5. the communication system of wireless network transmissions multimedia series flow as claimed in claim 4, it is characterized in that wherein said communication system comprises that also one uses terminal, and using terminal is one to connect the callee or the first speaker of another multimedia series flow end points by user's platform and base station, and a voice-over-net of setting up between first speaker and callee conversation, a video calling and/or a fax through internet are served to obtain the frequency range quality by described control device control.
6. the communication system of wireless network transmissions multimedia series flow as claimed in claim 5 is characterized in that wherein said control device is a networking telephone, an Internet video device or a fax through internet device.
7. the communication system of wireless network transmissions multimedia series flow as claimed in claim 5 is characterized in that the formula of wherein said computing unit calculating frequency range is: (coding per second output bit number+(per second package number) x (each layer header length summation) x8) x (1+ wideband transmission cost proportion).
8. the communication system of wireless network transmissions multimedia series flow as claimed in claim 5 is characterized in that wherein said resolution unit is according to SIP, MGCP or signaling protocol format analysis control signal H.323.
9. the communication means of a wireless network transmissions multimedia series flow, be to be matched with user's platform between an at least one use terminal and a base station to carry out, use terminal to comprise a first speaker and a callee, it is characterized in that: described communication means may further comprise the steps:
(a) user's platform receive to use terminal transmission/reception multimedia series flow control signal and parse an identification code and a media description of multimedia series flow;
(b) user's platform is according to the required frequency range of described media description computing multimedia series flow; And
(c) user's platform sends a quality request instruction according to frequency range and gives base station and provide corresponding frequency range quality service to give the multimedia series flow of described identification code to require base station.
10. the communication means of wireless network transmissions multimedia series flow as claimed in claim 9 is characterized in that wherein said communication means also comprises the steps:
(d) set up a voice-over-net conversation, video calling or fax through internet between first speaker and the callee.
11. the communication means of wireless network transmissions multimedia series flow as claimed in claim 10 is characterized in that wherein said communication means also comprises the steps:
(e) in voice-over-net conversation, video calling or fax through internet, first speaker and callee are changed by CODER-DECODER, and obtain the frequency range quality service of base station renewal to transmit new coded data by user's platform.
12. the communication means of wireless network transmissions multimedia series flow as claimed in claim 9 is characterized in that the formula of wherein said communication means calculating frequency range is: (coding per second output bit number+(per second package number) x (each layer header length summation) x8) x (1+ wideband transmission cost proportion).
13. the communication means of wireless network transmissions multimedia series flow as claimed in claim 9 is characterized in that wherein said user's platform is according to SIP, MGCP or signaling protocol format analysis control signal H.323.
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| CN2010101108246A CN102137078A (en) | 2010-01-22 | 2010-01-22 | Control device of wireless network transmission multimedia streaming, communication system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330275A (en) * | 2015-07-03 | 2017-01-11 | 联发科技股份有限公司 | Communication method and device |
| US9775163B2 (en) | 2011-10-21 | 2017-09-26 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Resource management concept |
-
2010
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9775163B2 (en) | 2011-10-21 | 2017-09-26 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Resource management concept |
| US10945269B2 (en) | 2011-10-21 | 2021-03-09 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Resource management concept |
| US11240821B2 (en) | 2011-10-21 | 2022-02-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Resource management concept |
| US12010714B2 (en) | 2011-10-21 | 2024-06-11 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Resource management concept |
| CN106330275A (en) * | 2015-07-03 | 2017-01-11 | 联发科技股份有限公司 | Communication method and device |
| CN106330275B (en) * | 2015-07-03 | 2019-08-09 | 联发科技股份有限公司 | Communication means and communication device |
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Application publication date: 20110727 |