CN1178439C - Multi-link transmission of data over cellular network - Google PatentsMulti-link transmission of data over cellular network Download PDF
- Publication number
- CN1178439C CN1178439C CNB018043690A CN01804369A CN1178439C CN 1178439 C CN1178439 C CN 1178439C CN B018043690 A CNB018043690 A CN B018043690A CN 01804369 A CN01804369 A CN 01804369A CN 1178439 C CN1178439 C CN 1178439C
- Prior art keywords
- Prior art date
- 230000001413 cellular Effects 0.000 title claims description 42
- 230000000875 corresponding Effects 0.000 claims abstract description 15
- 239000010410 layers Substances 0.000 claims description 14
- 238000004088 simulation Methods 0.000 claims description 7
- 238000009432 framing Methods 0.000 claims description 2
- 238000000034 methods Methods 0.000 description 2
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
- H04W72/12—Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel
- H04W72/1263—Schedule usage, i.e. actual mapping of traffic onto schedule; Multiplexing of flows into one or several streams; Mapping aspects; Scheduled allocation
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; Arrangements for supplying electrical power along data transmission lines
- H04L25/14—Channel dividing arrangements in which a single bit stream is divided between several baseband channels and reassembled at the receiver
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
Background of invention
The present invention relates generally to radio communication, especially, relate to the data communication on cellular network.
Capacity in speed single communication channel between regular meeting surpasses at 2 that must transmit data between 2 o'clock.Know crowd in the art, can use a plurality of links Data transmission that walks abreast in this case.For example, can use point-to-point (PPP) multi-link protocol to replace being generally used for general ppp protocol in the digital packet communication between the computer.People such as Sklower consult on No. 1990 of the Internet engineering duty group (IETF) network work group and describe this agreement in (RFC) (in August, 1996), are incorporated herein by reference.It provides a kind of method, be used for to the datagram of crossing over a plurality of logical data links (such as a plurality of Integrated Service Digital Network Bearer Channels) cut apart, recombinant and ordering.Yet multi-link protocol needs special-purpose multilink modulator-demodulator, and incompatible with the current standard telephone modem that is installed in the most computers.
In cellular area, the IS-95 standard that is used for code division multiple access (CDMA) communication that telecommunications industry association (TIA) announces provides some to be called the media data speed (MDR) that is used for high speed data transmission service and the feature of high data rate (HDR) transmission.When the paranormal cdma communication channel speed of the user data rate between mobile radio station (MS) and the base station sub-system (BSS), MDR and HDR allow to open simultaneously a plurality of communication channels.Because the situation that the data volume that transmits on direction of frequent existence is bigger than the data volume that transmits on another direction (the most often be on forward direction, that is, from BSS to MS), so the channel number of opening on both direction needn't equate.In MDR, for each direction, generally there is a basic code communication channel, its carries the signaling with data and the supplemental code communication channel that reaches seven supplementary data is used for high-speed data.Needs according to the total data rate in any moment activate complement channel.
Provide similar high-speed data service in global mobile system (GSM) telecommunications stage 2+ standard, this standard is used for high speed circuit switch data (HSCSD).Like this, distributed many time division multiple accesses (TDMA) time slot to carry high-speed data between BSS and the MS.The cellular system of most of current uses is not supported the standard such as HSCSD or MDR.The enforcement of these high speed modulars need be carried out sizable investment aspect foundation structure and new equipment.
Summary of the invention
The purpose of aspects more of the present invention provides improved equipment and method, is used for the transmission of high-speed data on cellular communications networks.
Another purpose of aspects more of the present invention provides equipment and method, and described equipment and method are to make application data transmit between computer on the cellular link of a plurality of parallel connections for application program with for computer user's transparent way.
Another purpose again of aspects more of the present invention provides equipment and method, described equipment and method be used for the fully compatible Cellular Networks of the network infrastructure of current use and equipment on high-speed data communication.
In preferred embodiment of the present invention, a pair of computer is connected to separately RFDC unit, described RFDC unit is swap data on a plurality of Radio Links simultaneously.Best, described unit communicates on Cellular Networks.The two or more cellular transceiver of use in each unit are set up a plurality of links, and described link is dialed the calling of a plurality of parallel connections simultaneously between the unit.Each unit has and is coupled to the data-interface of the FPDP of computer separately, generally is serial line interface, in the mode of simulation standard modulator-demodulator.Operation application program is on computers preferably used point-to-point (PPP) agreement of standard by the radio-cell swap data, is not using a plurality of links and can not discover.Multiplexer in radio-cell is responsible for the Frame distribution from each computer, be used for sending at a plurality of links, and be responsible for rearranging frame according to reception, so that the operation of these unit is transparent for the computer that uses them basically.
Therefore, the present invention can send data with the several times data rate at admissible rate on the individual channel on wireless network.In limited bandwidth system, and therefore the single channel data send in the slower cellular network, this feature particular importance.The data rate that uses not expensive hardware to obtain increasing with need not to change existing cellular infrastructure.Equally, do not need using wireless communication unit of the present invention to come the computer of swap data or software application to make amendment.
Therefore, preferred embodiment according to the present invention provides a kind of RFDC unit, and described RFDC unit comprises:
Data-interface is applicable to the data of reception from first computer, sending to second computer with similar RFDC unit, and the data passes that receives from second computer to first computer;
A plurality of wireless communication transceivers are applicable to communicating with corresponding transceiver in the communication unit of second computer on the Radio Link separately; And
Multiplexer, it is applicable to the data that distribution receives from first computer by data-interface in the middle of a plurality of transceivers, thereby on link separately, send, and be compiled in the data that receive from second computer on the link become single, the ordering data flow, to be delivered to first computer by data-interface.
Best, a plurality of wireless communication transceivers comprise cellular transceiver, and make up Radio Link on the net in cellular communication.Best, in order to set up Radio Link, each transceiver in the transceiver dials into a calling of the corresponding transceiver in the communication unit of second computer on the net in cellular communication.
Best, in the mode of simulation standard data modem unit, data-interface is applicable to is coupled to first computer, wherein, data-interface comprises RS-232 interface.Best again, use the point-to-point protocol of standard to transmit and receive data by the application program of moving on first computer, seem between first and second computers, to have only single link in work.
Best, the data that receive from first computer are cut apart framing, and multiplexer adds a numbering layer to frame, the frame assembler that sends is become the stream of single ordering according to its on link.
Further be provided for a kind of method of RFDC according to preferred embodiment of the present invention, comprise:
From first computer input data, be used to send to second computer
Transceiver a plurality of between set up a plurality of respective wireless communication links, each is to comprising first transceiver that is coupled to first computer and second transceiver that is coupled to second computer;
The data that receive from first computer are carried out multiplexed so that on a plurality of wireless communication links the parallel various piece that sends data;
Receive the data that send on a plurality of wireless communication links;
Received data be assembled into single, the ordering data flow to output to second computer.
Best, set up a plurality of wireless communication links and comprise and set up two-way link that like this, data still send to first computer from second computer on a plurality of links.
Best, set up a plurality of wireless communication links and be included in and set up link on the cellular communications networks.Wherein, setting up link is included in and dials a plurality of callings on the cellular communications networks.Best, described method comprises that monitoring calls out, so that one of judge in the link when to become idlely, wherein, sets up link and comprises that place calls is to rebulid idle link.
Best, comprise that from first computer input data emulation is coupled to the normal data modulator-demodulator of first computer, wherein, the simulation standard data modem unit comprises the serial data of reception from the input of first computer.Best, the input data comprise that use standard point-to-point protocol receives from the application's data that operates on first computer, seem to have only between first and second computers single link in work.
Best, the input data comprise the Frame of reception from first computer, and multiplexed data comprises that a numbering layer adds frame to, according to described numbering layer, the frame assembler that sends on link is become stream single, ordering.Best, the compilation received data comprises according to numbering layer institute's received frame is reordered, and from frame, remove the numbering layer, so that the application program that operates on second computer receives data, seem between first and second computers, to have only single link in work.
From detailed description below in conjunction with the preferred embodiment of the present invention of accompanying drawing, the present invention be will become more fully understood, wherein:
Description of drawings
Fig. 1 is a block diagram, and the multilink cellular data communication system according to preferred embodiment of the present invention schematically is described;
Fig. 2 is a flow chart, illustrates that schematically preferred embodiment according to the present invention is used for sending in the system of Fig. 1 a kind of method of data;
Fig. 3 is a flow chart, illustrates that schematically preferred embodiment according to the present invention is used for handling in the system of Fig. 1 a kind of method of received data;
Fig. 4 is a flow chart, illustrates that schematically preferred embodiment according to the present invention is used for a kind of method that the Frame that the method for using Fig. 3 receives is reordered.
Fig. 1 is a block diagram, and the wireless data communication system 20 according to preferred embodiment of the present invention schematically is described.System 20 comprises a pair of personal computer (PC) 22 and 24, and they link by cellular data communication unit 28 and 30 separately.By cable (normally being connected to the standard series connected cable of the RS-232 port of computer) each computer is coupled to separately cellular unit.On the other hand, between computer and radio-cell, can use many in the art any wired data of knowing to connect basically.Unit 28 and 30 communicates on cellular communications network, preferably the CDMA net.On the other hand, can use network and other cellular standards of other type.
In the embodiment in figure 1, computer 22 and 24 runs application 26, and under this application program, swap data between computer preferably uses point-to-point (PPP) agreement, knows as the crowd of institute in the art.On each computer, ppp protocol encapsulates with the data that the sequence application programs of Frame is produced, and then they is delivered to another computer.On the other hand, between computer, can use any other suitable communication protocol, preferably produce the agreement of Frame or packet.
Cellular unit 28 (similarly, cellular unit 30) comprises and by cable it is connected to the above-mentioned port of computer 22 by modulator-demodulator simulator 32.Multiplexer 34 Frame that distribution receives by the modulator-demodulator simulator in the middle of a plurality of cell phone module 36,37,38.Each such module comprises a cellular transceiver with logic and control circuit, as employed transceiver in many in the art traditional cellular phone of knowing.Make phone module indicate PHONE 1, PHONE 2 ..., PHONE n, to be illustrated in the module No. of operable in fact any needs in the unit.The inventor has been found that the Convenient telephone module No. that uses is between 2 and 6 in unit 28, use identical number in unit 30.For convenience and firm, the antenna (not shown) of the best sharing of common of transceiver.In Cellular Networks, each phone module has its telephone number in cellular network, and wherein, for the ease of enforcement, preferably number is sequenced.
Each phone module 36,37,38 in unit 28 with full-duplex mode on Cellular Networks the corresponding module of data passes in the unit 30.The data that corresponding 34 pairs of phone modules of multiplexer receive are carried out demultiplexing, are delivered to separately computer by modulator-demodulator simulator 32 then.Though for the sake of clarity, multiplexer and the conduct of modulator-demodulator simulator independently functional block illustrate, and preferably carry out this two functions by same processor, preferably with having the suitable I/O connection and the general processor of software.On the other hand, can in specialized hardware or in the combination of hardware and software unit, realize modulator-demodulator simulator 32 and multiplexer 34.
Fig. 2 is a flow chart, illustrates that schematically preferred embodiment according to the present invention is used to use communication unit 28 and 30 to send a kind of method of data between computer 22 and 24.For the sake of clarity, hereinafter with reference to from computer 22 to computer 24 data send and describe described method, but be to be understood that common computer communicates by unit 28 and 30 with full-duplex mode.
At dialing commands steps 50 places, the user of computer 22 makes the dialing request, preferably uses standard Microsoft dialer software program.Generally, the software prompt user imports telephone number.In response, the user specifies in the number of first phone module 36 (PHONE 1) in the cellular unit 30.On the other hand, telephone number is carried out pre-programmed.The user Enters Number or the number of pre-programmed according to receiving, and computer 22 sends the dialing order to unit 28.
At calling step 52 place that starts, response dialing order, unit 28 paging telephone modules 36,37,38 dial into the calling of the corresponding module in the unit 30.Therefore, set up n calling simultaneously.At indication step 54 place, when successfully carrying out all-calls, unit 28 returns to computer 22 and connects indication, sends the signal that modem link has prepared to receive data.At this moment, computer begins to send data to unit 28, seems that this unit is the modulator-demodulator of standard.Yet data transmission rate roughly is n a times of available speed when only using single cellular link.
At received frame step 56 place, modulator-demodulator simulator 32 receives the PPP frame from computer 22 in order.In numbering step 58, proprietary numbering layer is added to each frame, the position of expression frame in sequence.Generally, header is added to the frame that comprises frame number.Then, at frame forwarding step 60 places, multiplexer 34 is distributed to phone module 36,37,38 to frame successively.Best, multiplexer passes to all modules to frame in a looping fashion.Then, at frame forwarding step 62 places, phone module sends to their corresponding person in unit 30 to frame.
One or more connections may take place and lose in 28 and 30 the communication period in the unit between the phone module in the unit.Normally because the fault in Cellular Networks causes this connection of losing, but also may be owing to the hardware fault in unit 28 or 30 produces.Multiplexer 34 is checked the state of phone module 36,37,38 regularly, so as to verify they still with another unit in their corresponding person be connected effectively.When finding that one of connection is no longer valid, multiplexer just stops to send to its Frame.Simultaneously, phone module attempts to set up the cellular link of corresponding person with it again, can be used for sending Frame so that can once more it be become.When one or more cellular links not in when work, the data transmission rate between the computer 22 and 24 reduces, but has kept the connection between the computer.In case module has rebulid its cellular link, it just notifies multiplexer, and then, multiplexer just recovers Frame is sent to this module.
At on-hook step 64 place, when finishing data communication, the user instruction computer of computer 22 is terminated to the connection of computer 24.Generally, the identical dial-up program that also is used to begin to connect stops connecting.Computer is delivered to unit 28 disconnecting connection request, and indication phone module 36,37,38 is hung up their callings separately.Unit 30 also notifies computer 24 to stop connecting.
Fig. 3 is a flow chart, and a kind of method that is used to be received in the data that sent between unit 28 and 30 according to embodiments of the invention schematically is described.In unit 28 and 30 among both, this method and the method that above combines the transmission data that Fig. 2 describes simultaneously and carry out in parallel and are proceeded to connect up to stopping.
At ring indication step 68 place, after all n the connections of finishing between unit 28 and 30, unit 30 notice computers 24 have been made inserting and have been called out.At modulator-demodulator simulation process 69 places, application program 26 receives the rings indication, and modem initialization message is sent to modulator-demodulator simulator 32 in unit 30.The modulator-demodulator simulator confirms to receive these message.At this moment, computer 24 prepares to receive the data from computer 22.
At Data Receiving step 70 place, the Frame that multiplexer 34 receives from phone module 36,37,38.Multiplexer arrives the order received frame at module place frame by frame, this order often with computer 22 transmit frames according to order different.For this reason, at step 72 place that reorders, the multiplexer buffered frame, and according to the proprietary number information of before sending, adding frame to they are reordered.Then, at step 74 place, from Frame, remove the numbering layer.At transmit frame step 76 place, modulator-demodulator simulator 32 connects by the cable between modulator-demodulator simulator and suitable computer port and in order frame is outputed to computer 24.
Fig. 4 is a flow chart, and the details of the step 72 that reorders schematically is described, thereby the Frame that multiplexer 34 receives is through ordering, to export by correct sequence.As long as receive new frame, perhaps expired when also not receiving frame when timer, just call this step.Generally, according to the message response feature of Cellular Networks, timer is arranged to expire after 7 seconds.Operation parameter in flow chart " counting " is come the number according to proprietary numbering layer each frame that expression receives that adds at step 58 place (Fig. 2).Use " next counting " to be used for representing expecting the number of the next frame that sends/receive.The frame that does not receive in order is stored in the buffer of pond, arrives, judge not in order by the count value of frame and current next count value are compared up to their opportunitys.
When multiplexer 34 receiving data frames, the current next count value of its contrast is checked the count value of frame.If these are worth different, then it compares the difference of value and the window size of being scheduled to.The window size that is typically provided to 8 frames is represented to allow to obtain not in-order frame and still is retained in degree out of order in the pond.If the difference between counting and the next count value is greater than 0 but within window size, then present frame is added in the pond.Otherwise the order of count value frame by frame is delivered to computer 24 to all frames in the pond.The sign of engineering noise made (that is, holding the available holding tank of institute's received frame) in record in the pond, sent out corresponding frame with expression.Make next count increments to a value then, and multiplexer wait for that next frame arrives than the count value big 1 of last frame.
On the other hand,, then at once this frame is sent to computer 24, and corresponding record in the pond is made the mark of engineering noise if multiplexer 34 receives the frame of count value and next count value coupling.Stop frame timer, and check all the other records in the pond, to judge whether also should send them.For each record, increase progressively next count value, and check the respective record in the pond, with the frame co-pending of judging whether this record remains valid.If, then this frame is sent to computer, and similarly check next record in the pond, proceed up to finding invalid record.At this moment, if the pond is not empty, that is,, then restart timer if still have effective record to stay in the pond.If (Chi Shikong's, then do not need to restart timer, arrive up to another Frame).Then, multiplexer 34 is waited for next frame.
If timer expired, then invalid flag made in the record corresponding to the currency of next count value in the pond before receiving frame.Increase progressively next counting, and check corresponding next record in the pond, with the unsettled frame of judging whether it remains valid.Then, proceed to check the process that writes down in the pond, as mentioned above.As long as unit 30 continues to receive data, multiplexer 34 just continues to cycle through step 72, as shown in FIG. 4.
Though above described preferred embodiment with reference to cellular communication, be appreciated that the wireless communication system that can similarly be applied to principle of the present invention other type, such as PCS Personal Communications System (PCS) and satellite system, and ground communication.Therefore be appreciated that above-mentioned preferred embodiment just as example, and those contents that illustrate especially and describe above the invention is not restricted to here.But, scope of the present invention comprises above-described various combination of features and sub-portfolio, and those skilled in the art that according to the above description reading and change of the present invention and the modification that may carry out, and the change of the present invention and the modification that do not disclose in the prior art.
Priority Applications (2)
|Application Number||Priority Date||Filing Date||Title|
|Publication Number||Publication Date|
|CN1398478A CN1398478A (en)||2003-02-19|
|CN1178439C true CN1178439C (en)||2004-12-01|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|CNB018043690A CN1178439C (en)||2000-01-31||2001-01-31||Multi-link transmission of data over cellular network|
Country Status (11)
|EP (1)||EP1256220A2 (en)|
|JP (1)||JP2003521195A (en)|
|KR (1)||KR20020073519A (en)|
|CN (1)||CN1178439C (en)|
|AR (1)||AR030685A1 (en)|
|AU (1)||AU3471001A (en)|
|CA (1)||CA2398080A1 (en)|
|HK (1)||HK1051270A1 (en)|
|IL (1)||IL150971D0 (en)|
|TW (1)||TW582145B (en)|
|WO (1)||WO2001056190A2 (en)|
Families Citing this family (11)
|Publication number||Priority date||Publication date||Assignee||Title|
|US6747964B1 (en)||2000-09-15||2004-06-08||Qualcomm Incorporated||Method and apparatus for high data rate transmission in a wireless communication system|
|GB2377852B (en) *||2001-07-18||2005-04-13||Inventec Appliances Corp||Mechanism for effecting a fast data transmission between communication devices|
|US7376097B2 (en) *||2002-11-27||2008-05-20||Ntt Docomo Inc.||Method of associating an IP address with a plurality of link layer addresses in a wireless communication network|
|DE10322702A1 (en) *||2003-05-20||2004-08-19||Siemens Ag||Multimedia cordless communication system uses GSM and WLAN transmissions with multimedia data packets|
|CN100403736C (en) *||2006-03-14||2008-07-16||杭州华三通信技术有限公司||Message serial number inspection and inspector with multi-unit transmission|
|WO2009099288A2 (en)||2008-02-04||2009-08-13||Samsung Electronics Co., Ltd.||Autonomous user equipment transmission power control in communication systems|
|RU2468540C1 (en) *||2008-12-24||2012-11-27||Нек Корпорейшн||Communication system|
|WO2010090205A1 (en) *||2009-02-03||2010-08-12||日本電気株式会社||Wireless transmission method and wireless transmission device|
|KR200454373Y1 (en) *||2009-08-06||2011-06-30||대은전자 주식회사||Combination structure of terminal block and hub|
|IT1404184B1 (en) *||2011-02-28||2013-11-15||Siae Microelettronica Spa||A method of digital signal processing for transmission / reception of a stream of digital signals on a plurality 'of channels|
|CN104581854B (en)||2013-10-16||2019-07-12||中兴通讯股份有限公司||A kind of wireless connection method and device|
Family Cites Families (2)
|Publication number||Priority date||Publication date||Assignee||Title|
|NL9400548A (en) *||1994-04-07||1995-11-01||Nederland Ptt||Broadband transmission system|
|FI97187C (en) *||1994-12-09||1996-10-25||Nokia Telecommunications Oy||High speed data transmission in mobile networks|
- 2001-01-31 JP JP2001555232A patent/JP2003521195A/en active Pending
- 2001-01-31 EP EP01906850A patent/EP1256220A2/en not_active Withdrawn
- 2001-01-31 CA CA002398080A patent/CA2398080A1/en not_active Abandoned
- 2001-01-31 AR ARP010100448A patent/AR030685A1/en not_active Application Discontinuation
- 2001-01-31 WO PCT/US2001/003244 patent/WO2001056190A2/en not_active Application Discontinuation
- 2001-01-31 KR KR1020027009818A patent/KR20020073519A/en not_active Application Discontinuation
- 2001-01-31 AU AU3471001A patent/AU3471001A/en active Pending
- 2001-01-31 IL IL15097101A patent/IL150971D0/en unknown
- 2001-01-31 CN CNB018043690A patent/CN1178439C/en active IP Right Grant
- 2001-03-27 TW TW090101892A patent/TW582145B/en not_active IP Right Cessation
- 2003-05-13 HK HK03103323A patent/HK1051270A1/en not_active IP Right Cessation
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