CN101577699A - Audio-visual communication searching module - Google Patents
Audio-visual communication searching module Download PDFInfo
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- CN101577699A CN101577699A CNA2008100967122A CN200810096712A CN101577699A CN 101577699 A CN101577699 A CN 101577699A CN A2008100967122 A CNA2008100967122 A CN A2008100967122A CN 200810096712 A CN200810096712 A CN 200810096712A CN 101577699 A CN101577699 A CN 101577699A
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Abstract
The invention relates to a communication device of an audio-visual cooperation system, comprising a control unit, an audio-visual communication cooperation module, at least one processor and an output/input unit, wherein the audio-visual communication cooperation module is used for receiving or transmitting wireless audio-visual signals of double communication protocols; the processors are electrically connected with the double communication module and used for processing the wireless audio-visual signals of the double communication protocols; and the output/input unit is electrically connected with a digital analogue converter.
Description
Technical field
The present invention relates to a kind of external or built-in retrieval module, particularly a kind of microwave audio-visual communication receives, receiver module.
Background technology
Along with information and computer market constantly expand, electronic product is grown up under the promotion of the fast trend of compact, multi-functional speed fast.Based on the arriving of cyberage, communication network and internet are emerging in recent years industry, and the exploitation that communication system also follows mobile phone to integrate science and technology also constantly provides the user the more convenient mode that obtains information.Therefore, a communication science and technology also transition is new favorite, and attached commerce is also flourish because of the facility that contact demand and information obtain in the communication device.No matter be that internet, mobile communication equipment, personal digital assistant have been full of the space in whole life, and network and communication dealer also weed out the old and bring forth the new and provide commercial service assist client that its data are transmitted or obtain to enlarge the scope of market and service.Then towards multi-element multifunctional development, as the fast trend of compact, multi-functional speed, and Communications service dealer or information service provider also must provide polynary, comprehensive and up-to-date information to the client aspect electronic building brick.
The signal that the both-way communication module is received also carries the data or the program that to be stored in the internal storage location via microprocessor to be handled, as comparison communications protocol, deciphering and judgement.Received information can show by display unit.Be not inconsistent demand based on the conventional acoustic communication, and the communications protocol that different communication network ISPs is provided differs, therefore the present invention is based on above-mentioned consideration and propose.
Summary of the invention
Main purpose of the present invention is to propose its wireless communication apparatus of the audio-visual retrieval module of a kind of microwave or tool, is beneficial to long-range audio-visual retrieval.That the present invention also is beneficial to is cross-platform in many ways, hand-held, unfixed point, move and carry out audio-visual communication or retrieval, as is beneficial to the carrying out or the telereference of video conference.
The communication device of the audio-visual co-construction system of the present invention comprises: control unit; Input unit is electrically connected to this control unit and is beneficial to user's input instruction or data; The audio-visual communication co-constituted module is in order to receive or to launch the wireless image-sound signal of multiple communications protocol; At least one processor electrically connects audio-visual communication module again, in order to handle multiple audio-visual communication agreement wireless signal; Digital analog converter, this processor of electrical couplings is in order to the conversion between processing digital signal and analog signal; Output/input unit is electrically connected to above-mentioned digital analog converter.The audio-visual communication agreement comprises the first audio-visual communication module and is selected from W-CDMA, CDMA2000, CDMA2001, TD-CDMA, TD-SCDMA, UWC-136, DECT, 4G; The second audio-visual communication module is selected from WiFi, WiMax, 802.11.
Preferred embodiment of the present invention will be aided with following figure and do more detailed elaboration in comment backward:
Description of drawings
Fig. 1 is a functional block diagram of the present invention;
Fig. 2 is a system schematic of the present invention;
Figure 3 shows that functional block diagram of the present invention;
Figure 4 shows that functional block diagram of the present invention;
Figure 5 shows that functional block diagram of the present invention.
[primary clustering symbol description]
Switch unit 102
The first audio-visual communication module 100A
Wireless communication module 100B
The second audio-visual communication module 100C
User's interface 110
Microphone 160
Standby setup unit 185
Image process unit 310
Hand-held device 400
Interface 410
Subscriber's identification module 440
Microwave access module 500
Embodiment
The present invention is applicable to wireless communication apparatus, is not limited to mobile phone, personal digital assistant, intelligent mobile phone, global position system, mobile computer etc. but comprise.In general wireless telecommunication system,, the communication network in different system or area adopts different communications protocol or bi-directional call device communications protocol because serving the dealer.So the signal that each system service supplier is launched comprises different confession news agreements.The communication device and the signal that propose the audio-visual communication co-construction system based on above-mentioned consideration transmit method of reseptance.For adopting the user of audio-visual communication agreement, may not all wish oneself to be seen during communication, but not audio-visual agreement can't be carried out the image transmission by the other side.So the present invention proposes co-construction system, must make the user select appropriate protocol in suitable occasion communication.And portable audio-visual communication rate is higher, the non-moving type less expensive, but can't carry out audio-visual communication in moving.Based on the demand of above-mentioned different situations, the present invention is proposed.
Consult Fig. 1, it is the wireless communication apparatus function block schematic diagram that comprises the audio-visual communication co-construction system.For convenience of explanation, now adopt first communication module and the second communication module co-construction system to do an explanation, so it is not in order to limit the present invention, in other words can revise the present invention to be beneficial to adopt the module of other different communication systems or agreement and changed enforcement, so all be contained under the spirit of the present invention.For example, can adopt system-on-a-chip to integrate the chip or the processor of the following stated.This wireless image-sound communication altogether structure device comprises a control unit 100, central processing unit for example, and it is instruction and data, data processing and computing in order to handle and to control this device.Memory cell, 105 are coupled in control unit 100.The memory cell 105 of wireless communication apparatus can be divided into three parts, is respectively read-only memory (ROM), non-voltile memory for example flash memory (FLASH) and three parts of random access memory (RAM).Generally, the data of not changing can be stored among the read-only memory (ROM), system operating software or fixing application program generally can be stored among the non-volatile internal memory and can still can keep interior data under non-powered state, can repeat when power supply is arranged to read or write.Random access memory (RAM) is to be used for storing through the data of system downloads and to handle the information of back gained, the more selected relevant information of user is outputed to display unit and exports with the state that shows.Be stored in the non-voltile memory system program with used the execution of the function that is necessary program control, handled to present via CPU or control unit and given display unit 115 through user's interface 110.One input unit 170 is electrically connected to this control unit 100 and is beneficial to user's input instruction or data.
Second audio-visual communication is to constitute by regional wireless transport module 100B and network audio-video communication unit 180, is beneficial to carry out audio-visual communication.Be fit to low speed or fixed point transmission, sharp with preferable enforcement, the module that second audio-visual communication is transmitted comprises wideband wireless local area network network module (widebandlocal area network), is beneficial to utilize wireless transmission to see through antenna transmission (receiving/send out) wireless signal and network focus or retrieval point with the control unit coupling and gets in touch.Described transport module 100B illustration must comprise WiFi, global intercommunication microwave access (WiMax), and 802.11x (a, b, g, n).One network audio-video communication unit 180 is coupled in above-mentioned control unit 100 in order to handle voice and data or the data that see through Internet transmission.The second above-mentioned wireless image-sound communication module (comprising transceiver) is able to and the internet links, and then it is compatible to WiFi, WiMax, and 802.11x (a, b, g, n), agreement such as UWB.See through handling of network audio-video communication unit 180 the beginning user is utilized the internet to transmit image data and voice simultaneously, to carry out the network audio-video communication.And above-mentioned network audio-video communication unit 180 is hardware, firmware or belongs to software architecture.General user need open computer and download archives to hard disk by it again, transfers to hand-held device again, and so program is very inconvenient, and can't download desired archives in no computer area, and as MP3, MP4, blogger etc., it is very inconvenient.Be need not to see through the downloaded archives by wireless transport module 100B, can eliminate the inconvenience that is caused, general conventional mobile phone need be by opening downloaded MP3, and MP4 is just play.And the present invention gets directly by wireless transport module 100B and detects focus, and connected network sees through and instructs thus wireless module hand-held and need not downloaded.In moving or under weak output signal or no signal situation, judge through the analysis of signal analysis unit 104, utilized the switch unit 102 that couples control unit 100 to switch to the first audio-visual communication module 100A, to carry out required function.Described switching is able to manual switchover or automaticallyes switch by software.Above-mentioned signal analysis unit 104 is directly or indirectly obtained signal parameter.Signal analysis unit 104 is an independent circuit or an integrated circuit.
The first above-mentioned audio-visual communication module 100A must be coupled with fundamental frequency treatment system 145, described fundamental frequency treatment system is an integral chip or a plurality of independent fundamental frequency processor (A, C as shown), and being coupled with the long distance communication module of corresponding agreement is beneficial to the processing of communication signal.
The 3rd communication module 100C and fundamental frequency treatment system 145 are coupled in the modulation demodulating equipment, and it can be handled the signal of 1.9G frequency range and be low lower powered communications protocol (as personal handset protocol) with respect to first communication module.In like manner, utilize line, see through only intermediate frequency of receiver Mixed Zone oscillator signal degraded in order to received signal.Reflector (transmitter) then is with the conversion of signals frequency of modulation, launches by antenna.The modulation demodulating equipment is connected in above-mentioned receiver and reflector, in order to modulating signal.Each above-mentioned audio-visual communication module must be distinguished electrical couplings in above-mentioned control unit 100, and it gets and distinctly utilizes integrated circuit technique to make, and also can utilize integrated circuit technique to integrate above-mentioned each device or extraction system chip architecture.
Through the signal of above-mentioned fundamental frequency processor processing, wherein control signal is sent to control unit 100 and handles, voice signal then is sent among the speech coding decoder CODEC 150 and is handled.Then, a speech convertor 155 is electrically connected at this CODEC 150, in order to convert digital signal to analog signal, perhaps on the contrary analog signal conversion is become digital signal.Microphone 160 and loud speaker 165 are electrically connected to above-mentioned speech convertor (speech conversion) 155 respectively.Sim card connector is beneficial to the SIM card of insertion system, see through sim card connector make SIM card can and 100 of control units get in touch and be beneficial to control unit and obtain data and the password that is stored in the SIM card.In addition, image transmission for the benefit of, the present invention can also comprise digitized video retrieval module 200, is connected in this control unit 100.The image of being retrieved is sent into control unit 100 to be handled.It is CMOS or CCD array.This wireless communication apparatus comprises the operation that a standby setup unit 185 electrical couplings are beneficial to use to control unit 100.When the signal difference that is transmitted as two different communication network ISPs surpasses a critical value, wireless communication apparatus will by standby setup unit 185 manually or the communication systems that start strong signal automatically transmit.For example, signal analysis unit 104 compares the communication system ISP can receive signal in the user location intensity, select this communication system of telecommunication network services supplier of signal by force from this multiple communication system, as the communication system that transmits signal.
Antenna and corresponding radio frequency correlation unit can adopt one or the configuration of many groups.This design can be in a device configuration at least two groups fellow disciple number not.Number may adopt different telecommunication network services suppliers based on two groups of doors, so this wireless communication apparatus comprises the operation that a standby setup unit 185 electrical couplings are beneficial to use to control unit 100.When a certain communication network signal difference surpassed a critical value, wireless communication apparatus transmitted by the communication system that standby setup unit 185 is started strong signal.For example, this unit can compare each communication system ISP can receive signal in the user location intensity.Select this telecommunication network services supplier communication system from this multiple communication system, as the communication system that transmits signal.The present invention comprises the standby setup unit and must utilize the program of planting in this wireless communication apparatus memory cell to be beneficial to setting standby mode, is multi-mode standby or single-mode standby.
Present embodiment goes for comprising the signal transmission of the wireless communication apparatus of many communication systems, and the hand-held device that wireless communication apparatus comprises a plurality of communication protocol module provides two or more audio-video systems and deposits.Communication Service Provider is the communication network ISP of different communications protocol., decipher to convert cognizable signal to by communication network ISP institute information transmitted via the reception of both-way communication module through code translator.Utilize the microprocessor or the central processing unit for processing of above-mentioned wireless communication apparatus.This communication device comprises at least two different communication system standby simultaneously or standbies separately.When the user starts the communication device power supply, and will seek as the general communication device and the signal and the intensity of scan for networks.The standby simultaneously of the also changeable or simultaneously a plurality of systems of default communication network system.When the user calls, the built-in program of wireless communication apparatus will be carried out interpretation in order to confirm with what communication system or network as the media that transmits communication.And the parameter of this judgement can be set at intensity with signal as foundation, and when a certain communication network signal is strong, then wireless communication apparatus will start by force that the communication system of signal transmits.The signal transfer method of wireless communication apparatus comprises the relevant parameter of each communication system of inspecting this communication device; For example, this relevant parameter comprises signal strength signal intensity, and relatively each communication system ISP can receive the intensity of signal in the user location.More electromagnetic intensity also must be as basis for estimation.According to the pre-conditioned comparison of this relevant parameter, select a communication system, as the communication system that transmits signal.For example, pre-conditioned can be selects the relative powerhouse of this signal strength signal intensity as the communication system that transmits signal, and for example suggestion is compared among each communication network ISP, and what person is stronger in the signal strength signal intensity of user locality.Select this communication system from this multiple communication system, as the communication system that transmits signal.Transmit signal according to the selecteed communication system of institute afterwards.The pre-conditioned communication system of selecting to dial the expense junior that is set at.Be with native system parameter comparing unit 185 electrical couplings to control unit 100, it is a configuration feature optionally, is beneficial to above-mentioned operation.
As mentioned above, the present invention is provided the audio-visual transmission communication of striding different platform, there is no any device at present and is able to cross-platform (agreement) audio-visual transmission.Pass through this and carried out audio-visual meeting, or select preferable audio-visual quality, signal, electromagnetism intensity or rate, adopt which kind of platform to carry out image transmission in many ways, help multi-platform image meeting with decision according to parameter index.Please refer to Fig. 1, Fig. 2, utilize a plurality of images that are conveyed into, utilize an image cutting unit 106, in order to image is inputed to divided multiple zone, default plus or minus value is in order to adjust the image pixel value of each pixel.Image division method can be consulted U.S. Patent number 7,171, and 019,7,142,689, patentee Canon KabushikiKaisha (Tokyo, JP); U.S. Patent number 7,059,729, patentee Hitachi, Ltd. (Tokyo, JP).Utilize 106 of image cutting units to be able in hand-hold device, show the image that is transmitted in many ways simultaneously, be beneficial to hand-held in many ways video conference for the image of MPTY.Be noted that, above-described dividing method, just, non-in order to limit the present invention in order to illustrate that one implements profit.Consult Fig. 3, the image of several feed-ins must selectivity dispose and handle through multiplexer 300, afterwards feed-in display unit 115 after image cutting unit 106 is handled.In one embodiment, selectivity through image processor 310, to image pixel or image feed-in display unit again 115 after the adjustment in addition.Image is able to not overlapping demonstration, overlapping demonstration, the demonstration of overlapping.Described control unit is microprocessor, System on Chip/SoC, digital signal processor or its combination.Look closely demand and cost and decide.
Fig. 2 comprises the communication network of two different characteristics, comprises an audio-visual telephonic communication networking, and LAN (LAN).LAN is coupled to the internet.A plurality of subscriber terminal equipments link above-mentioned audio-visual telephonic communication networking.In like manner, a plurality of subscriber terminal equipments link above-mentioned internet respectively.In one embodiment, computer (or mobile computer) 1,2,3 is for being wiredly connected to the internet, and computer can be and wirelessly is connected to the internet by searcher (access point).Must be noted that the number of subscriber terminal equipment is any.As figure, the equipment of part is connected to the internet.Above-mentioned computer can be by following but be not limited to following equipment and substitute, and as personal digital assistant, mobile computer, mobile phone etc., it must possess the ability that connects online.In embodiment, subscriber terminal equipment is for to be in different classes of network respectively, and this two network is swap data directly, need by Exchange Service mechanism bridge joint both.In other words, this Exchange Service mechanism must make neither network exchange data or the binding with aspect.Bridge system is a known technology, as toll switchbroad, mobile phone switching center, base station controller, gateway device, routing device or the like, in order to exchange transmission data.One indexing unit (access point) is coupled to the internet so that the inlet of wireless link network to be provided, and other device with similar functions also can use non-limiting above-mentioned indexing unit, and it makes an explanation embodiment.Portable apparatus can transmit that reception information sees through the mobile phone service network or the internet carries out audio-visual multidirectional while communication, and non-folk prescription is to download message.This information transmitted or data comprise the combination of numerical data, image data (video), voice signal (audio signal).
Consult Fig. 4, show circumscribed microwave access module of the present invention, it comprises a processing unit 420, generally can be chip (chip), is electrically connected microwave access module 430, sees through microwave and carries out wireless data transmission.Seeing through an interface can do with hand-held device 400 and be connected.Hand-held device is seen through this and externally declines the ripple access module and carry out long distance wireless microwave access, the networking telephone, connection network.In an embodiment, can comprise subscriber's identification module 440 and be coupled in processing unit 420 in order to confirm user identity.It can be in-building type or card insert type.Based on this, this microwave access module can so that the user see through external mode carry out the wireless remote microwave access or hand, wireless, mobile network connects.Figure 5 shows that in the embodiment with Fig. 4 to be built in the hand-held device that the similar Fig. 1 of part primary clustering is not so the part assembly shows.Wherein, microwave access module 500 is disposed between antenna and the control unit 100, is beneficial to the hand-held microwave access.Same components sees also the explanation of Fig. 1, repeats no more.The hand-held device of Fig. 5 can be independently microwave access device, cell phone, notes type, Satellite Navigation Set, media player, e-book, PDA, digital camera, digital camera etc.Mobile phone agreement (specification) can be GSM, CDMA, PHS, W-CDMA, 3G, 4G.
For example, commercial processor can be handled decoding MPEG archive file.Possesses H.264 codec engine media play chip as it.For example, process chip is made of core cpu, media engine (Media Engine), graphic process unit and virtual action engine (Virtual MobileEngine is hereinafter to be referred as VME) four major parts.Core cpu is with the basis that is designed to of the R4000 of MIPS, and possess floating number processor (FPU) and vectorial floating number processor (VFPU) each one, can reach the above floating point arithmetic usefulness of per second 2.6GFlops; Media engine adopts the R4000 identical with core cpu, and possesses the independently embedded internal memory of 2MB, carries out the processing of audio-visual crossfire in order to auxiliary system.So possess embedded internal memory, programmable control break flow chart of data processing, comprise H.264 decompression to adapt to, and the vector processing unit of different disposal demand such as audio processing, by can dynamically changing the design of flow chart of data processing, improve the utilance of processing unit, simplify chip design and reduce the consumption of power.Below also must adopt software decoding or processing.
Above-described all multiple units, module can be according to the demand combination in any.The present invention with preferred embodiment explanation as above and is familiar with this field skill person, in not breaking away from spiritual scope of the present invention, retouch when doing a little change, its scope of patent protection more ought on accompanying claim and etc. same domain decide.
Claims (12)
1. an audio-visual communication is total to the structure device, comprises: control unit; Input unit is electrically connected to this control unit and is beneficial to user's input instruction or data; Digital analog converter, this processor of electrical couplings is in order to the conversion between processing digital signal and analog signal; It is characterized in that, comprise the audio-visual communication co-constituted module, in order to receive or to launch the wireless image-sound signal of at least two communications protocol; At least one processor electrically connects this audio-visual communication co-constituted module, in order to handle multiple audio-visual communication agreement wireless signal; Output/input unit is electrically connected to above-mentioned digital analog converter audio-visual communication co-constituted module, in order to receive or to launch the wireless image-sound signal of at least two communications protocol.
2. audio-visual communication as claimed in claim 1 is the structure device altogether, it is characterized in that this audio-visual communication co-constituted module comprises relative high-speed mobile audio-visual communication module and is selected from W-CDMA, CDMA2000, CDMA2001, TD-CDMA, TD-SCDMA, UWC-136, DECT or 4G; Relatively low speed audio-visual communication module is selected from WiFi, WiMax, 802.11 or UWB.
3. audio-visual communication as claimed in claim 1 is the structure device altogether, it is characterized in that, this audio-visual communication co-constituted module comprises following any two combination W-CDMA, CDMA2000, CDMA2001, TD-CDMA, TD-SCDMA, UWC-136, DECT or 4G.
4. audio-visual communication as claimed in claim 1 is the structure device altogether, it is characterized in that, this audio-visual communication co-constituted module comprises following any two combination WiFi, WiMax, 802.11 or UWB.
5. a communication is total to the structure device, it is characterized in that comprising:
Control unit;
Input unit is electrically connected to this control unit and is beneficial to user's input instruction or data;
The audio-visual communication co-constituted module is in order to receive or to launch the wireless image-sound signal of at least two communications protocol;
At least one processor electrically connects audio-visual communication module again, in order to handle multiple audio-visual communication agreement wireless signal;
Digital analog converter, this processor of electrical couplings is in order to the conversion between processing digital signal and analog signal;
Output/input unit is electrically connected to above-mentioned digital analog converter;
Wherein the structure communication module comprises high-power relatively communication module altogether, is selected from following agreement W-CDMA, CDMA2000, CDMA2001, TD-CDMA, TD-SCDMA, UWC-136, DECT or 4G; And lower powered relatively communication module, be selected from the low-power communications protocol.
6. a communication is total to the structure device, it is characterized in that comprising:
Control unit;
Input unit is electrically connected to this control unit and is beneficial to user's input instruction or data;
Be total to the structure communication module, in order to receive or to launch the wireless image-sound signal of multiple communications protocol;
At least one processor electrically connects audio-visual communication module again, in order to handle multiple audio-visual communication agreement wireless signal;
Digital analog converter, this processor of electrical couplings is in order to the conversion between processing digital signal and analog signal;
Output/input unit is electrically connected to above-mentioned digital analog converter;
Wherein altogether structure communication module comprises: communication module is selected from following agreement WiFi, WiMax, 802.11 or UWB; And low-power communication module.
7. audio-visual communication device is characterized in that comprising:
Control unit;
Input unit is electrically connected to this control unit and is beneficial to user's input instruction or data;
The audio-visual communication module is in order to receive or emission wireless image-sound signal;
Processor electrically connects this audio-visual communication module, in order to handle audio-visual communication agreement wireless signal;
Digital analog converter, this processor of electrical couplings is in order to the conversion between processing digital signal and analog signal;
Display is in order to show image;
The image cutting unit, in order to several image processing of feed-in to be shown in the several cut zone on this display.
8. audio-visual communication device as claimed in claim 7 is characterized in that, this audio-visual communication module comprises W-CDMA, CDMA2000, CDMA2001, TD-CDMA, TD-SCDMA, UWC-136, DECT, 4G, WiMax, 802.11 or UWB.
9. circumscribed microwave access module is characterized in that comprising:
Control unit;
The microwave access module is electrically connected to this control unit and is beneficial to the user and carries out the remote microwave access;
Interface, this control unit of electrical couplings is in order to carry out transfer of data with hand-hold device.
10. the hand-held device of a tool microwave access module is characterized in that comprising:
Control unit;
The microwave access module is electrically connected to this control unit and is beneficial to the user and carries out the remote microwave access;
User's interface, this control unit of electrical couplings is in order to input instruction; And
Display interface, this control unit of electrical couplings is in order to display message.
11. a media playing apparatus is characterized in that comprising:
Control unit is used for handling and decoding digitized video or message archives;
The microwave access module is beneficial to the user and carries out the remote microwave access;
User's interface, this control unit of electrical couplings is in order to input instruction; And
Display unit, this control unit of electrical couplings is in order to display message.
12. media playing apparatus as claimed in claim 11 is characterized in that, this microwave access module comprises WiMax.
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| CNA2008100967122A CN101577699A (en) | 2008-05-05 | 2008-05-05 | Audio-visual communication searching module |
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| CNA2008100967122A CN101577699A (en) | 2008-05-05 | 2008-05-05 | Audio-visual communication searching module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414765A (en) * | 2001-10-26 | 2003-04-30 | 华为技术有限公司 | New type user identification module using USB interface |
| CN1949914A (en) * | 2005-10-14 | 2007-04-18 | 华为技术有限公司 | Bandwidth competition method for WiMax system |
| WO2007078663A2 (en) * | 2005-12-16 | 2007-07-12 | Interdigital Technology Corporation | Mobility middleware architecture for multiple radio access technology apparatus |
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2008
- 2008-05-05 CN CNA2008100967122A patent/CN101577699A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414765A (en) * | 2001-10-26 | 2003-04-30 | 华为技术有限公司 | New type user identification module using USB interface |
| CN1949914A (en) * | 2005-10-14 | 2007-04-18 | 华为技术有限公司 | Bandwidth competition method for WiMax system |
| WO2007078663A2 (en) * | 2005-12-16 | 2007-07-12 | Interdigital Technology Corporation | Mobility middleware architecture for multiple radio access technology apparatus |
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Application publication date: 20091111 |