CN1240550A - Circuitry and method for simultaneously transmitting voice and data information - Google Patents
Circuitry and method for simultaneously transmitting voice and data information Download PDFInfo
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- CN1240550A CN1240550A CN 97180653 CN97180653A CN1240550A CN 1240550 A CN1240550 A CN 1240550A CN 97180653 CN97180653 CN 97180653 CN 97180653 A CN97180653 A CN 97180653A CN 1240550 A CN1240550 A CN 1240550A
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Abstract
Circuitry, and an associated method, for permitting simultaneous transmission of multiple forms of information, such as that generated during operation of a multi-media communication device. Signal bits of the different forms of information are together mapped onto symbols of a multi-level, multi-phase modulation symbol set. Transmission of signals representative of the symbols are transmitted, thereby to effectuate the simultaneous transmission of the multiple forms of information.
Description
The present invention is information-related such as the such voice-and-data that sends at the multimedia telecom equipment duration of work with transmission.Specifically, the present invention with merge voice-and-data information selectively so that circuit and correlation method that voice-and-data can be sent simultaneously are relevant.
The present invention helps transmitting voice-and-data information rapidly, because voice-and-data information sends simultaneously, but and does not require that the bandwidth of the communication channel of carrying the signal that contains voice-and-data information increases.Communication system that circuit of the present invention and method can be advantageously used in wireless (for example honeycomb or other radio telephones), channel wherein all has the bandwidth of setting.
A communication system comprises a transmitter and receiver that is interconnected by a communication channel with regard to its smallest size.Signal of communication by the transmitter emission is received by receiver by communication channel.Radio communications system is the communication system that a kind of communication channel is wherein formed by the one or more frequency bands in the radio-frequency spectrum.Owing to need between transmitter and receiver, not form fixing or rigid line connects, therefore using this fixing or rigid line to connect under inconvenience even the impossible situation, it is superior especially that radio communications system just seems.
Cellular communication system is a kind of radio communications system.If in a geographic area, disposed the infrastructure (hereinafter referred to as network) of cellular communication system, as long as the user of this cellular system is in this geographic area that network covers and just can carries out telephone communication usually so.
Along with some communication equipments novel and combination have been released in the development of technology, can carry out information interchange with new form.Wherein some communication equipment can carry out both communicate by letter of synchrodata (isochronousdata, i.e. strict data of time) and asynchronous data (being to require undemanding data the time).Voice and view data are typical synchrodatas.
For example, multimedia or other multimode communication devices can carry out the communication of two or more data, send voice and image, text and data.Utilize multimedia equipment that graph text information is sent with the voice messaging slave unit, receive by another multimedia equipment.Some multimode communication device can also carry out the communication of view data.When two kinds of different kinds of information sent together, the information interchange efficient between dispatching station and the receiving station was just higher.
Many multimode communication devices are designed to transmit by the telephone line of telephone system the information of two or more forms.Wherein some multimedia telecom equipment can also transmit information by wireless (for example honeycomb or other radio telephones) communication system.
The information that produces for the multimode device that will be positioned at dispatching station most effectively sends receiving station to, and the information of two kinds of forms must in time send to receiving station in time mutually by the numbers.If different forms of information separately sends, so this separately transmission will cause delay.This delay can reduce the communication efficiency that the information of two kinds of forms is sent to receiving station.
Develop the related circuit of certain methods and these methods of realization already, can be have in time sent the information of two or more forms to receiving station from dispatching station.The simplest is different forms of information can be sent on some separated channels simultaneously, transmits respectively and receives different forms of information with separately circuit.Yet the mode of this transmission information is wanted waste bandwidth, and this is undesirable in the communication system with finite bandwidth resource such such as cellular communication system.
When multi-form information comprises such as the common voice messaging that produces of multimode communication device and " data " (non-voice) information, the signal of expression non-voice information can be added together with suitable gain with the signal of representing analog voice information, send together.The signal of expression non-voice information can also comprise the error correction code commonly used of the data integrity of protecting non-voice information.Receiving station reverts to signal separately with regard to the circuit with receiving station after receiving such and signal.Non-voice information is recovered with a rapid process of multistep.At first, carry out decoding processing, form a decoded signal.Then, deduct this decoded signal from received signal, this part signal that will be left is again delivered to the analog voice decoder.This scheme is used for for example structure of some voice band modulator-demodulator.
In time division multiple access (TDMA) system, the burst sequences of the signal of the burst sequences of the signal of expression non-voice (that is asynchronous) information and expression voice (that is synchronously) information sends during the different time-gap defined in the tdma system after multichannel combines sometimes.Use for sending different forms of information respectively by the some parts that limits and keep in the single time slot, the burst sequences of unlike signal also can send during same time slot together.Yet, in any case this scheme still requires different forms of information separately to send, and can only be used for the tdma communication system.
In direct sequence CDMA (DS-CDMA) communication system, the signal of expression voice and non-voice information can send with adding after the different sequential codings together respectively in a conventional manner simultaneously.After the circuit of receiving station receives the signal that sends simultaneously, with corresponding decoding key decoding.This scheme is limited in cdma communication system usually to be used, and can not realize easily in the communication system of other types.
Because it is not that the communication system that can only be used for some particular types is exactly some other restriction that the different forms of information that send to need transmits simultaneously realizes more existing modes of multi-mode communication, it will be useful therefore improving the mode that sends different forms of information simultaneously.
The present invention makes significant improvement according to relevant these background knowledges that transmit the information of multimode communication device generation.
The present invention has promoted the information of rapid transmission such as two or more forms that form at the multimedia telecom equipment duration of work valuably.The information combination of two or more forms back together sends on a communication channel simultaneously.The bandwidth of this communication channel need specially not increase for the bandwidth that can transmit two kinds of forms simultaneously or limit again.
The present invention can have utilization advantageous particularly when working in the wireless communication system of bandwidth constraints in the communication channel such such as cellular communication system at multimode communication device.Some signal bit that form the information of two or more forms of part are mapped to single modulated symbol together, and a series of code elements that form like this can send by any communication plan in many selected communication plans.Therefore, the present invention is not limited to use in independent a kind of specific communications scheme.
Under a kind of situation of the present invention, produce voice and non-voice information at a multimode communication device duration of work.The signal of the signal of expression voice messaging and expression non-voice information forms a series of speech bits and non-voice bit after digitlization.The selected combination of these speech bits and non-voice bit is modulated on the carrier signal after being mapped as a series of modulated symbols, sends to receiving station by a communication channel.After receiving modulated carrier signal, therefrom extract modulated symbol, handle through inverse mapping and recover voice and non-voice information.
Under another kind of situation of the present invention, selected mapping scheme is variable, depends on the speed that produces voice messaging and non-voice information.During producing less voice messaging, during the speaker who for example produces voice signal has a rest, can change speech bits and the non-voice bit is mapped to the ratio of modulated symbol, thereby make the transfer rate maximum of non-speech data.
Therefore, consider these and other certain situations, the present invention has disclosed a kind of information combination circuit and correlation method that is used for transmitter.This transmitter can send to the synchrodata of expression synchronizing information and the non-speech data of expression asynchronous information on the communication channel.Form a composite signal, can while transmitting synchronous data and asynchronous data when sending to it on the communication channel.A signal distributor has at least one and connects into signal that receives the expression synchrodata and the input port of representing the signal of asynchronous data selectively.This signal distributor forms a value and the corresponding distributing signal of value of selecting to be connected the signal of the expression synchrodata that receives and representing the signal of asynchronous data.A mapper connects into the reception distributing signal, the selected part mapping of distributing signal is become the code element of a multiple-symbol modulated symbol collection.The code element of the multiple-symbol collection that selected part was mapped to of distributing signal depends on the value of distributing signal.These code elements that synchrodata of distributing and asynchronous data signal each several part are mapped to have just formed described composite signal.
From can more completely understanding spirit of the present invention and scope to exemplary DETAILED DESCRIPTION OF THE PREFERRED of the present invention and appended claims below in conjunction with accompanying drawing.In these accompanying drawings:
Fig. 1 illustration can use the communication system functionality block diagram of embodiments of the invention;
Fig. 2 illustration need diagrammatic representation at one embodiment of the present of invention duration of work by the demodulation code element of the modulated symbol collection that signal bit was mapped to of the dispatching station transmission of a part that forms communication system shown in Figure 1;
Fig. 3 illustration be shown specifically the functional-block diagram of the cell site of a part that forms communication system shown in Figure 1;
Fig. 4 illustration form the functional-block diagram of receiving station of the part of communication system shown in Figure 1; And
Fig. 5 illustration list the method flow diagram of each step of the method for one embodiment of the present of invention.
At first referring to Fig. 1, communication system can be sent to receiving station far in the information that dispatching station forms.Among the embodiment shown in the figure, communication system 10 forms a radio communications system.It will be appreciated, of course, that technology of the present invention also can be used for the communication system of other types similarly.
Dispatching station can send information more than a kind of form selectively simultaneously by carrier 14.Shown in this embodiment in, dispatching station 12 produces three kinds of information, respectively by voice (or synchronous such as such other of image) information source 18, " data " (picture and text) information source 22 with control (or other are asynchronous) information source 24 and form.In one embodiment, bit b0 and b1 are produced by source 18, and bit b2 is produced by source 22, and bit b3 is produced by source 24.
The operation that signal bit on line 26,28 and 32 is passed through of signal distributor 34 is controlled by controller 38.Shown in this embodiment in, controller 38 is connected with 24 with source 18,22 respectively with 46 by line 42,44, receives the indication that each information source forms the speed of various information.
In another embodiment, the mode that forms the distributing signal on the line 36 depends on the pattern of setting, just the bit number of choosing from line 26, the bit number of choosing from line 28 and the bit number of choosing from line 32.Utilize information source 18-24 to produce the speed that the indication of the speed of signal bit separately can improve message transmission.For example, if voice messaging source 18 temporarily produces signal bit on not online 26, so just can make signal distributor 34 produce the distributing signal that a signal bit that is only produced by data message source 22 and control information source 24 forms.
The distributing signal that produces on online 36 is delivered to signal mapper 48.Signal mapper is mapped to the bit of the distributing signal on the line 36 code element of a modulated symbol collection.Mapper 48 is mapped to a typical modulated symbol collection of code element with the bit of distributing signal will be below in conjunction with Fig. 2 explanation.
The signal that mapper 48 produces is added on line 52 and 54, delivers to transtation mission circuit 56.Shown in this embodiment in, the signal of the code element that expression mapper 48 is mapped to the signal bit of distributing signal is with I and Q value sign.In other embodiments, mapper is otherwise worked, and signal bit can be mapped to the code element that otherwise limits.Transtation mission circuit 56 will be added to line 52 according to selected communication plan (as TDMA or CDMA) and become the form that can transmit by carrier 14 with signal transformation on 54.
Fig. 2 shows the typical modulated symbol collection 86 that signal bit that mapper 48 (see figure 1)s will be added to it is mapped to code element.The code element that this modulated symbol is concentrated use with Fig. 2 in abscissa and the proportional I component part of ordinate and Q component partly define.Each code element 88 in the code-element set 86 is represented by a point among the figure, and each code element 88 is determined by a specific I component value and Q component value.Modulated symbol collection 86 forms the code-element set of level, leggy more than, is here formed by 16 code elements.
In a kind of mapping scheme, when information source 18,22 and 24 produces a series of signal bit separately and is added on corresponding line 26,28 and 32 respectively, signal distributor 34 can pass through signal bit by this way, make the value of I component part determine, and the value of Q component is determined by formula Q=2b3+b2 by formula I=2b1+b0.In conjunction with the explanation that Fig. 1 did, bit b0 and b1 are corresponding to the bit of the signal of expression voice messaging as the front, and bit b2 is corresponding to the bit of data message, and bit b3 is corresponding to the bit of control information.When shining upon by this way, voice messaging source 18 will be assigned to and be the many like that bit participation transmission of the twice in data message source 22 and control information source 24.
Such as the indication of the such Bit Allocation in Discrete of above-mentioned Bit Allocation in Discrete is the part of the information content of the control information that produces of control information source 24.Like this, the situation of Bit Allocation in Discrete sends receiving station to during the signal that the transmission dispatching station produces.Receiving such indication makes receiving station can correctly recover the information content of signal transmitted.
As top briefly carried, can produce according to the information of delivering to controller by line 42,44 and 46 at controller 38 under the situation of indication control signal distributor 34 of speed, for example voice messaging produce can redistribute when speed is fallen deliver to mapper 48 signal bit to be mapped to some the selected code elements in the code element 88.Also can redistribute according to the change of channel (being carrier 14) characteristic.Can realize forming the scope of error correction coding of increase of signal of expression voice messaging or the speech bits redundancy of increase, to help the information content of transmitting voice information.Can also redistribute signal bit, realize a communicating control information, so that reconfigure the distribution of the modulated symbol that signal bit and signal bit be mapped to.
Fig. 3 shows the details of dispatching station 12.Voice messaging source 88 shown in the figure comprises a voice signal generator 88, and the voice signal that it produced is delivered to encoder 92.Encoder 92 produces a code signal and delivers to interleaver 94.Interleaver 94 produces an interleaved signal and delivers to scrambler 96.96 pairs of interleaved signals of scrambler carry out scrambler, produce a scrambler signal that forms a series of signal bit, are added on the line 26.Similar, shown data message source 22 comprises a data information signal generator 99, is used for producing data information signal, delivers to encoder 102.
Fig. 4 shows the details of receiving station 16.Dispatching station (being shown in Fig. 1 and 3) is detected by antenna 138 to the signal that receiving station 16 sends.Antenna 138 carries out conversion to received signal, and the signal that is produced is added on the line 142, delivers to the radio-frequency part 144 of receiving circuit 62.
Radio-frequency part 144 is worked in a conventional manner, and the rf signal of sending here is carried out down-conversion, the intermediate-freuqncy signal that is produced is delivered to the intermediate frequency portion 146 of receiving circuit 62.Intermediate frequency portion 146 works in a conventional manner, and intermediate-freuqncy signal is carried out demodulation, and the baseband signal that is produced is delivered to A-D converter 148 digitlizations in addition.
The I of digitized signal and Q component are partly delivered to symbol de-interleaver 152.Symbol de-interleaver 152 forms a de-interleaved signal, delivers to inverse mapping device 68.As shown in prior figures 1.Inverse mapping device 68 becomes a series of signal bit with the symbol transformations of sending here.These signal bit are distributed to corresponding deinterleaver 154,156 and 158 by bit distributor 76.These deinterleavers carry out delivering to corresponding decoder 162,164 and 166 decodings after the deinterleaving to the information bit of sending here separately.The decoded signal that these decoders produce is delivered to voice messaging destination 78, data message destination 82 and control information destination 84 respectively.
In order to illustrate for simplicity, more than only single dispatching station 12 and single receiving station 16 have been done detailed description.Certainly can understand, multi-mode communication system usually can two-way communication, and multimode communication device generally includes the circuit of dispatching station 12 shown in the prior figures and receiving station 16.Communicate by letter in the time of can realizing the information of same of two or more two-way forms by utilization the present invention.
Can be particularly suitable for transmitting simultaneously the information of two or more forms by honeycomb or other radio telephone communication systems by the multimode communication device of embodiment of the invention work.After signal bit is mapped to the selected code element of modulated symbol collection in the above described manner, can modulate by the modulation scheme of cellular communication system by the signal that these code elements form, as mentioned above.Signal sends to the base station of cellular communication system, delivers to desired receiving position more in a conventional manner, and recovering information offers the interested party and uses there.Owing to send during information of same, and do not increase requirement, therefore can advantageously realize the transmission of adequate information bandwidth.
Fig. 5 shows a kind of method 172 of the embodiment of the invention.Method 172 is used for realizing representing that the speech data of voice messaging and the non-speech data of expression non-voice information send on the communication channel simultaneously.
At first shown in square frame 174, produce a series of speech bits of expression voice messaging.Shown in square frame 176, also produce a series of non-voice bits of expression non-voice information then.Then shown in square frame 178, voice and non-voice bit are mapped as the code element of the code-element set of level modulation level more than selectively.The code element of the multilevel code unit collection that bit is mapped to selectively depends on the value of voice and non-voice bit.After this, shown in square frame 182, form voice and non-speech data and send on the communication channel.
More than explanation is to realize preferred embodiments more of the present invention, should not be construed as the present invention is limited to some extent.Scope of patent protection of the present invention is provided by following claim.
Claims (21)
1. will represent that the synchrodata of synchronizing information and the asynchronous data of expression asynchronous information send to a communication equipment on the communication channel simultaneously for one kind, described communication equipment comprises:
A synchronizing information bit generator that is connected into receiving synchronous information is used for producing a series of synchronization bits of representing synchronizing information;
One is connected into the asynchronous information bit generator that receives asynchronous information, is used for producing a series of asynchronous bit of expression asynchronous information;
One is connected into the mapper that receives synchronization bit and asynchronous bit, be used for selectively the corresponding code element that is mapped to level modulation code-element set more than together with asynchronous bit synchronously, synchronously and the code element of the multilevel code unit collection that is mapped to of asynchronous bit depend on the value of the synchronous and asynchronous bit of the synchronous and asynchronous data of formation that described mapper receives; And
One is connected into and receives synchronously and the transmitter of the code element that asynchronous bit is mapped to by described mapper, be used for code element is sent on the communication channel, thereby just will be synchronous and asynchronous data send on the communication channel simultaneously.
2. in a communication system with a dispatching station and a receiving station, a kind of and cell site's combination will be synchronously and asynchronous data send to the transtation mission circuit of receiving station simultaneously by a communication channel, described circuit comprises:
A synchronizing information bit generator that is connected into receiving synchronous information is used for producing a series of synchronization bits of representing synchronizing information;
One is connected into the asynchronous information bit generator that receives asynchronous information, is used for producing a series of asynchronous bit of expression asynchronous information;
One is connected into the mapper that receives synchronization bit and asynchronous bit selectively, be used for the synchronous corresponding code element that is mapped to level modulation code-element set more than with asynchronous bit, code element synchronous and the first collection of multilevel code that asynchronous bit is mapped to depends on the value of the synchronous and asynchronous bit that described mapper receives, the synchronous and asynchronous data of formation; And
One is connected into and receives synchronously and the transmitter of the code element that asynchronous bit is mapped to by described mapper, and the code element that is used for forming synchronous and asynchronous data sends on the described communication channel.
3. in the communication system of claim 2, the receiving circuit of the synchronous and asynchronous data that the code element that recovery a kind of and the receiving station combination is sent by communication channel by described transmitter forms, described receiving circuit comprises:
One can be tuned to receiver on the described communication channel, be used for the code element that receiver transmitter sends, forms a received signal of representing described code element;
A mapper that is connected into the received signal that receives described receiver formation is used for the symbol mapped that received signal is represented is become synchronization bit and asynchronous bit; And
One is connected into the decoder that receives synchronous and asynchronous bit respectively, is used for synchronous and asynchronous bit are decoded, and therefrom recovers synchronously and asynchronous data.
4. at an energy speech data of expression synchronizing information and the asynchronous data of expression asynchronous information are sent in the transmitter on the communication channel, a kind of form one can be on described communication channel when being sent out the improved information combination circuit of the composite signal of transmitting synchronous data and asynchronous data simultaneously, described information combination circuit comprises:
Signal distributor with input port of at least one signal that is connected into the signal that receives the expression synchrodata and expression asynchronous data selectively is used for forming a value and the corresponding distributing signal of value of selecting to be connected the signal of the expression synchrodata that receives and representing the signal of asynchronous data; And
One is connected into the mapper that receives distributing signal, be used for the selected part mapping of distributing signal is become the code element of a multiple-symbol modulated symbol collection, the code element of the multiple-symbol collection that selected part was mapped to of distributing signal depends on the value of distributing signal, and the synchrodata of distribution and the code element that part was mapped to of asynchronous data signal form described composite signal.
5. the circuit of claim 4, described circuit also comprises a synchronizing information bit generator that is connected into receiving synchronous information, be used for producing a series of synchronization bits of expression synchronizing information, and the signal of the expression synchrodata that wherein receives comprises these synchronization bits on one first input port of described at least one input port of described signal distributor.
6. the circuit of claim 5, wherein said synchronizing information signal bit generator comprises: an Aristogrid that is connected into receiving synchronous information, be used for synchronizing information is carried out digitlization, form the digitlization synchronizing signal; One is connected into the encoder that receives the digitlization synchronizing signal, is used for the digitlization synchronizing signal is encoded, and forms code synchronism signal correspondingly; An interleaver that is connected into the received code synchronizing signal is used for the code synchronism signal is interweaved, and forms the synchronizing signal that interweaves correspondingly; And one be connected into the scrambler that receives the synchronizing signal that interweaves, and is used for the synchronizing signal that interweaves is carried out scrambler, form the scrambler synchronizing signal, and the scrambler synchronizing signal forms described synchronizing signal bit.
7. the circuit of claim 4, described circuit comprises that also is connected into an asynchronous information bit generator that receives asynchronous information, be used for producing a series of asynchronous bit of expression asynchronous information, and the signal of the expression asynchronous data that wherein receives comprises these asynchronous bit on one second input port of described signal distributor input port.
8. the circuit of claim 7, wherein said asynchronous information signal bit generator comprises: one is connected into the Aristogrid that receives asynchronous information, is used for asynchronous information is carried out digitlization, forms the digitlization asynchronous signal; One is connected into the encoder that receives the digitlization asynchronous signal, is used for the digitlization asynchronous signal is encoded, and forms coding asynchronous signal correspondingly; An interleaver that is connected into the received code asynchronous signal is used for the coding asynchronous signal is interweaved, and forms the asynchronous signal that interweaves correspondingly; And one be connected into the scrambler that receives the asynchronous signal that interweaves, and is used for the asynchronous signal that interweaves is carried out scrambler, form the scrambler asynchronous signal, and the scrambler asynchronous signal forms described asynchronous signal bit.
9. the circuit of claim 4, wherein said signal distributor comprises a multiplexer, be used for multiplexed expression voice messaging signal and the expression asynchronous information signal, described at least one input port comprises a first input end and one second one first input port and one second input port that input forms respectively by described multiplexer, and wherein said mapper is connected into and receives the synchrodata that expression combines through described multiplexer and the signal of asynchronous data.
10. the circuit of claim 4, wherein said mapper will represent that the multiple-symbol modulated symbol collection under the code element that the signal map of synchrodata and asynchronous data becomes comprises a leggy modulated symbol collection.
11. the circuit of claim 4, wherein said mapper will represent that the affiliated multiple-symbol modulated symbol collection of code element that the signal map of synchrodata and asynchronous data becomes comprises level modulation code-element set more than.
12. the circuit of claim 4, each is shown the code element of the first collection of wherein said multilevel code by a complex value numerical table that is expressed as one first real-valued component and one second real-valued component.
13. the circuit of claim 12, the wherein said first real-valued component is drawn by a selected combination of the value of the signal of expression synchronizing information.
14. the circuit of claim 12, the wherein said second real-valued component is drawn by a selected combination of the value of the signal of expression asynchronous information.
15. the circuit of claim 4, wherein said asynchronous information comprises text message, and wherein said second input port receives the signal of expression text message.
16. the circuit of claim 4, wherein said transmitter forms a part of a multimedia communications system, and wherein said asynchronous information comprises graphical information, and at least one input port of wherein said signal distributor receives the signal of presentation graphic information.
17. the circuit of claim 4, wherein said transmitter forms a part of a multimedia communications system, and wherein said asynchronous information comprises control information, and at least one input port of wherein said signal distributor receives the signal of expression control information.
18. the circuit of claim 4, wherein said asynchronous information comprises first kind of asynchronous information part and second kind of asynchronous information part, at least one input port of wherein said signal distributor comprises one first input port, second input port and one the 3rd input port, first input port is connected into the signal that receives the expression synchrodata, second input port receives first kind of asynchronous information part of the signal of expression asynchronous data, and the 3rd input port receives second kind of asynchronous information part of the signal of expression asynchronous data.
19. the circuit of claim 4, described circuit comprises that also one is connected into the signal that receives the expression synchronizing information and delivers to the controller of indication that the signal of the indication of speed of described signal distributor and expression asynchronous information is delivered to the speed of described signal distributor, described controller also is connected with described signal distributor, and the represented described signal distributor of rate controlled of the indication that described controller receives according to it to small part receives being connected of the signal of representing synchronizing information and asynchronous information respectively.
20. the circuit of claim 4, described circuit comprises that also one is connected into the signal that receives the expression synchronizing information and delivers to the controller of indication that the signal of the indication of speed of described signal distributor and expression asynchronous information is delivered to the speed of described signal distributor, described controller also is connected with described signal distributor, and described controller is controlled described signal distributor to small part according to the indication of the channel conditions of communication channel and received being connected of the signal of representing synchronizing information and asynchronous information respectively.
21. will represent that the synchrodata of synchronizing information and the asynchronous data of expression asynchronous information send to a method on the communication channel simultaneously for one kind, described method comprises the following steps:
Produce a series of synchronization bits of expression synchronizing information;
Produce a series of asynchronous bit of expression asynchronous information;
With the synchronous corresponding code element that is mapped to level modulation code-element set more than with asynchronous bit, code element synchronous and the multilevel code unit collection that asynchronous bit is mapped to selectively depends on the value of synchronous and asynchronous bit, the synchronous and asynchronous data of formation selectively; And
The code element that forms synchronous and asynchronous data is sent on the described communication channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97180653 CN1240550A (en) | 1996-10-15 | 1997-10-10 | Circuitry and method for simultaneously transmitting voice and data information |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/729,090 | 1996-10-15 | ||
| CN 97180653 CN1240550A (en) | 1996-10-15 | 1997-10-10 | Circuitry and method for simultaneously transmitting voice and data information |
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| CN1240550A true CN1240550A (en) | 2000-01-05 |
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| CN 97180653 Pending CN1240550A (en) | 1996-10-15 | 1997-10-10 | Circuitry and method for simultaneously transmitting voice and data information |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334827C (en) * | 2002-07-02 | 2007-08-29 | 夏普株式会社 | Signal transmission method, system, logic circuit and liquid crystal drive device |
| CN103181091A (en) * | 2010-10-27 | 2013-06-26 | 高通股份有限公司 | Simultaneous voice and data communication |
| CN103516389A (en) * | 2012-06-21 | 2014-01-15 | 幻音科技(深圳)有限公司 | Data signal transmission method and system, signal transmission control method and system |
| US9312888B2 (en) | 2012-06-29 | 2016-04-12 | Qualcomm Incorporated | Antenna interface circuits for carrier aggregation on multiple antennas |
| CN110649935A (en) * | 2019-09-12 | 2020-01-03 | 北京维普无限智能技术有限公司 | Multi-code system signal switching method |
-
1997
- 1997-10-10 CN CN 97180653 patent/CN1240550A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334827C (en) * | 2002-07-02 | 2007-08-29 | 夏普株式会社 | Signal transmission method, system, logic circuit and liquid crystal drive device |
| CN103181091A (en) * | 2010-10-27 | 2013-06-26 | 高通股份有限公司 | Simultaneous voice and data communication |
| US9425850B2 (en) | 2010-10-27 | 2016-08-23 | Sai C. Kwok | Simultaneous voice and data communication |
| CN103516389A (en) * | 2012-06-21 | 2014-01-15 | 幻音科技(深圳)有限公司 | Data signal transmission method and system, signal transmission control method and system |
| CN103516389B (en) * | 2012-06-21 | 2016-04-06 | 深圳市飘浮互动科技有限公司 | Method for data signal transfer and system, Signal transmissions control method and system |
| US9312888B2 (en) | 2012-06-29 | 2016-04-12 | Qualcomm Incorporated | Antenna interface circuits for carrier aggregation on multiple antennas |
| CN110649935A (en) * | 2019-09-12 | 2020-01-03 | 北京维普无限智能技术有限公司 | Multi-code system signal switching method |
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