CN101114887B - Transmission method of service data and receiving apparatus and equipment - Google Patents
Transmission method of service data and receiving apparatus and equipment Download PDFInfo
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- CN101114887B CN101114887B CN2006100617933A CN200610061793A CN101114887B CN 101114887 B CN101114887 B CN 101114887B CN 2006100617933 A CN2006100617933 A CN 2006100617933A CN 200610061793 A CN200610061793 A CN 200610061793A CN 101114887 B CN101114887 B CN 101114887B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses an operation data transmission method which is characterized by comprising the following steps: a receiving terminal receiving network side encoding the operation data block into at least two operation data transmission blocks, successively transmitting the operation data block in the way of sending the operation data transmission blocks; the receiving terminal receiving a first operation data transmission block of the currently transmitted operation data blocks, then verifying; if the verification is right, then stopping to receive the other operation data transmission blocks of the currently transmitted operation data blocks; when stopping to receive the operation data transmission blocks, the receiving terminal entering a save electric state. The invention saves receiving power of the receiving terminal with high SNR, and ensures the receiving performance of the receiving terminal with low SNR.
Description
Technical field
The present invention relates to the communications field, the special transmission method that relates to a kind of business datum and receiving system and equipment.
Background technology
The present invention at first is background with the multi-transceiver technology.Since the nineties in 20th century, multi-transceiver technology becomes the hot spot technology of broadband wireless communications.Its basic thought is that a bandwidth carrier is divided into a plurality of subcarriers, and on a plurality of subcarriers, transmits data simultaneously.
OFDM (Orthogonal Frequency Division Multiplexing; Be called for short OFDM) be a kind of technology representative in the middle of the multi-transceiver technology; It is through being divided into many orthogonal sub-channels with given channel in frequency domain; And allow subcarrier to overlap,, then can isolate data-signal from the sub-carrier channels of aliasing as long as it is mutually orthogonal to make that data-signal satisfies between subcarrier.
Actual radio communication channel has two big characteristics: time-varying characteristics and fading characteristic.Time-varying characteristics are by the relative motion between terminal, reflector, the scattering object or only are because the slight change of transmission medium causes.The stochastic variable that becomes when therefore, the channel capacity of wireless channel also is one.Under this background, adaptive technique more and more is applied in the middle of the communication system.For wireless communication system; Its channel conditions, type of service, professional distribution meeting in time, the variation in space and changing; Adopt the adaptive technique system that can make to carry out the self adaptation adjustment according to these variations more flexibly with intelligently; To improve transmission quality, increase power system capacity.In general, this adaptive strategy is divided into adaptive wireless resource management and adaptive wireless transmission technology two big classes.
The technology for self-adaptively transmitting that can supply adopt mainly concentrates on physical layer (PHY) and medium Access Layer (MAC).Mainly contain traditional diversity technique and the space diversity reception to communicate that adopts many antennas in physical layer; Comprise mainly that at the medium Access Layer link adaptation technology is adaptive coding modulation (AMC; AdaptiveModulation and Coding) and the link retransmission technique be automatic repetitive requests technology (ARQ, AutomaticRepeat request).
A kind of adaptive coding modulation is in the prior art: high s/n ratio (SNR; Signal-to-noise ratio) receiving terminal can adopt the higher modulation code rate; To reduce the time that receiving terminal receives data; And the receiving terminal of low SNR can adopt lower modulation rate, comes guaranteed qos.
This coding modulation technique has the unfavorable effect of several aspects.The first, because the randomness that each receiving terminal distributes in the sub-district makes the SNR of each receiving terminal receiving terminal different, its corresponding modulating-coding (Modulation and Coding is called for short MC) is also different.If the receiving terminal for SNR is higher is still decoded according to lower MC, can bring receiving terminal to reconcile the loss of power and the waste of the communication resource unavoidably.As data are adopted 16-QAM, the Turbo encoding rate is 1/3, takies the Radio Resource of two Sub-frame, and when adopting 16-QAM, the Turbo encoding rate is 2/3, only takies a Sub-frame Radio Resource.So, bring in for the reception of high SNR and to say, only need the data of first Sub-frame of demodulation to get final product; But at present; All receiving terminals are all reconciled two signals on the Sub-frame, and this has caused the waste of received power for the receiving terminal of the high SNR of receiving terminal.
The second, according to communication theory, when need be with the form of broadcasting during to a plurality of sub-districts issuing service data (such as MBMS), when radius of society hour, the SNR of its receiving terminal receiving terminal relatively can be higher; When radius of society was big, the SNR of its receiving terminal receiving terminal can hang down relatively.That is to say, theoretical according to link adaptation techniques, for the sub-district of minor radius, can adopt higher MC parameter service data transmission; For the sub-district of long radius, need to adopt the lower parameter service data transmission of MC.But in reality, when the radius of two neighbor cells is different, in order to guarantee receiving terminal neighbor cell is effectively eated dishes without rice or wine to merge (Air Combining), identical MC parameter need be adopted in two sub-districts.Thus, if, when adopting lower MC form, can reduce the cell radio resource utilance of minor radius according to SNR than the sub-district of long radius; If the SNR according to the sub-district of small radii when adopting higher MC form, can reduce the coverage rate of the sub-district of long radius.
The 3rd; When receiving terminal is in the edge of business datum purpose sub-district cohort, because the combined signal energy that receiving terminal obtains from other sub-district is little, even use the folding of eating dishes without rice or wine; Still can't improve and obtain high receptivity, cause that the receiving terminal receptivity at the edge of sub-district group descends.
Secondly the present invention is background with the terminal power saving technology.At present, there are many types at the terminal that receives data, and the mobile video terminal is arranged, and like PDA, the fixed video terminal is arranged, like digital TV, visual telephone or the like.About the terminal, relate to the problem of its power consumption or economize on electricity.On the one hand, for mobile digital terminal, because portable terminal uses powered battery, the power consumption that requires its radio frequency reception and channel volume accent, decoded portion is less than 100mW, and this is the specification requirement of economize on electricity; On the other hand, the terminal consumer tends to use product low in energy consumption based on the consideration of energy scarcity or environmental protection, and this is the market demands of economize on electricity.
For the solution of terminal power saving problem, existing technical scheme mainly is a time slicing techniques.Time slicing techniques adopts burst mode to transmit data; Each burst timeslice transmits a business; In professional delivery time sheet, should business will occupy the total data bandwidth separately, and point out the moment that next identical services timeslice produces, handheld terminal can receive selected business in the moment of appointment like this; Do energy-efficient treatment in professional free time, thereby reduce total average power consumption.Certainly; Transmitting apparatus is worked always during this; Between two timeslices of identical services, will transmit other business datums, hand-held digital video broadcast (DVB-H, Digital Video Broadcasting Handled) signal is made up of many like this timeslices.Angle from receiving equipment; The business datum that receives not is to be the continuous input mode like traditional constant rate of speed; Data arrive with discrete mode at interval, therefore are referred to as burst and transmit, if decoding terminal requires data rate lower but must be constant code rate; Receiving equipment can at first cushion the bursty data that receives, then the constant data flow of generating rate.Based on above technical characterictic, time slicing techniques is compared with traditional data stream business, has higher instantaneous digit rate.For reaching the requirement of saving power consumption, burst bandwidth is generally about 10 times of fixed-bandwidth.Therefore burst bandwidth can be saved 4% of power consumption under the situation of the twice of fixed-bandwidth, if burst bandwidth is 10 times of fixed-bandwidth, can save 90% power consumption.
But above-mentioned time slicing techniques is not distinguished the difference that received signal quality is higher and hang down receiving terminal; For guaranteeing certain coverage rate; Transmitting apparatus still will adopt the coded system than low rate, and with respect to the coded system of higher rate, receiving equipment will receive enough data; The necessary longer time of continuous operation, run counter to the requirement of terminal power saving.
Summary of the invention
The technical problem that the present invention will solve provides a kind of transmission method of business datum, with the received power of the high receiving terminal of realization saving receiving terminal SNR, and, the receptivity of the receiving terminal that assurance receiving terminal SNR is low.
For solving the problems of the technologies described above, the objective of the invention is to realize through following technical scheme:
A kind of transmission method of business datum may further comprise the steps:
Network side becomes at least two business datums to send piece business datum block encoding waiting for transmission, sends the business datum piece successively with the mode of sending business datum transmission piece;
Receiving terminal receives first business datum of current institute sending service data block and sends piece, carries out verification;
If verification is correct, then stop to receive all the other business datums transmission pieces of current institute sending service data block;
If check errors; Continue to receive next business datum transmission piece of current institute sending service data block; The business datum of current reception is sent piece to be merged with the business datum transmission piece that receives before; And carry out verification again, and carry out the reception of data according to check results, the transmission of sending service data block finishes up to the correct or current institute of verification.
Preferable, after described checking procedure, receive next business datum and send before the piece step, further may further comprise the steps:
If receiving terminal is a mistake to the check results that said business datum transmission piece carries out error checking and correction, then judge the FER of said business datum transmission piece, if said FER satisfies the network system requirement, then stop to receive remaining business datum and send piece; Otherwise, carry out receiving next business datum transmission piece step.
Said network side adopts the mode of incremental redundancy to generate said business datum and sends piece; Perhaps, said network side adopts the mode of repeated encoding to generate said business datum and sends piece; Perhaps, said network side adopts said each business datum transmission piece of time division multiplexing coded system transmission in the frame; Perhaps, said network side adopts said each business datum of interframe time division multiplexing coded system transmission to send piece; Perhaps, said network side adopts said each business datum of coded system transmission of frequency division multiplexing to send piece.
When said network side adopted said each business datum of interframe time division multiplexing coded system transmission to send piece, said network side issued described business datum continuously and sends piece, and perhaps, at least one subframe of said network side interval issues said business datum and sends piece.
The present invention also provides a kind of transmission method of business datum, may further comprise the steps:
Network side generates at least two business datums according to business datum piece to be sent and sends piece, sends the business datum piece successively with the mode of sending business datum transmission piece;
Said receiving terminal is indicated according to channel quality, and decision receives business datum and sends the piece number;
Said receiving terminal receives described business datum according to said decision and sends piece, carries out verification;
If verification is correct, then stop to receive all the other business datums transmission pieces of current institute sending service data block;
If check errors; Continue to receive next business datum transmission piece of current institute sending service data block; The business datum of current reception is sent piece to be merged with the business datum transmission piece that receives before; And carry out verification again, and carry out the reception of data according to check results, the transmission of sending service data block finishes up to the correct or current institute of verification.
Said channel quality indication is specifically obtained according to pilot frequency information by said receiving terminal; Perhaps, described channel quality is designated as the signal interference ratio of channel.
Preferable, after described checking procedure, receive next business datum and send before the piece step, further may further comprise the steps:
If receiving terminal is a mistake to the check results that said business datum transmission piece carries out error checking and correction, then judge the FER of said business datum transmission piece, if said FER satisfies the network system requirement, then stop to receive remaining business datum and send piece; Otherwise, carry out receiving next business datum transmission piece step.
Said network side adopts the mode of incremental redundancy to generate said business datum and sends piece; Perhaps, said network side adopts the mode of repeated encoding to generate said business datum and sends piece; Perhaps, said network side adopts said each business datum transmission piece of time division multiplexing coded system transmission in the frame; Perhaps, said network side adopts said each business datum of interframe time division multiplexing coded system transmission to send piece; Perhaps, said network side adopts said each business datum of coded system transmission of frequency division multiplexing to send piece.
When said network side adopted said each business datum of interframe time division multiplexing coded system transmission to send piece, said network side issued described business datum continuously and sends piece, and perhaps, at least one subframe of said network side interval issues said business datum and sends piece.
The present invention also sends out provides a kind of business datum to receive decoding device, and this device comprises IQ demodulation module, constellation diagram mapping block, de-interleaving block, decoder module, descrambling module at least, wherein; The a plurality of business datums that receive the business datum piece are successively sent piece, receive the back signal through the demodulation of IQ demodulation module, and constellation diagram mapping block is separated mapping; The de-interleaving block deinterleaving; The decoder module decoding behind the descrambling module descrambling, sends; It is characterized in that business datum receives decoding device and further comprises:
The verification module is used for after decoder module sends the piece decoding to the business datum of reception business datum piece, carrying out verification;
Receive control module, be used for whether receiving the remaining business datum transmission of business datum piece piece according to the check results control of verification module.
Said reception control module is further used for: if the calibration mode block check is correct, then said reception control module makes device stop to receive all the other business datums transmission pieces of current institute sending service data block, waits for receiving next business datum piece;
If next business datum that check errors, said reception control module make device continue the current institute of reception sending service data block is sent piece, the business datum of current reception is sent piece merge with the business datum transmission piece that receives before;
Said verification module is further used for; Data after being combined are sent piece and are carried out verification again, and check results is submitted to said reception control module.
The present invention also sends out provides a kind of business datum receiving equipment, this receiving equipment to comprise Anneta module and middle radio-frequency module, demodulator module, program stream demodulation multiplexer module, show player module at least, it is characterized in that:
Said demodulator module comprises the reception decoding device, and this business datum receives decoding device and further comprises:
The verification module is used for after decoder module sends the piece decoding to the business datum of reception business datum piece, carrying out verification;
Receive control module, be used for whether receiving the remaining business datum transmission of business datum piece piece according to the check results control of verification module;
Said business datum receiving equipment further comprises electricity-saving control module, is used for when said reception decoding device stops to receive business datum transmission piece, making receiving equipment be in power down mode.
Said reception control module is further used for: if the calibration mode block check is correct, then said reception control module makes device stop to receive all the other business datums transmission pieces of current institute sending service data block, waits for receiving next business datum piece;
If next business datum that check errors, said reception control module make device continue the current institute of reception sending service data block is sent piece, the business datum of current reception is sent piece merge with the business datum transmission piece that receives before;
Said verification module is further used for; Data after being combined are sent piece and are carried out verification again, and check results is submitted to said reception control module.
Above technical scheme can find out that the present invention sends the business datum piece because at network side, network side becomes at least two business datums to send piece the business datum block encoding with the mode of sending business datum transmission piece successively; Receiving terminal receives first business datum of current institute sending service data block and sends piece, carries out verification; If verification is correct, then stop to receive all the other business datums transmission pieces of current institute sending service data block.Perhaps, network side generates at least two business datums according to business datum piece to be sent and sends piece, sends the business datum piece successively with the mode of sending business datum transmission piece; Said receiving terminal is indicated according to channel quality, and decision receives business datum and sends the piece number; Said receiving terminal receives described business datum according to said decision and sends piece, carries out verification; If verification is correct, then stop to receive all the other business datums transmission pieces of current institute sending service data block.Owing to adopt technical scheme of the present invention, for the higher receiving terminal of the SNR of receiving terminal, can be as required, only to the first business datum piece or further the business datum piece of other parts is carried out demodulation, and need not whole business datum pieces is carried out demodulation; And for the higher receiving terminal of the SNR of receiving terminal, can be as required, relative to more business datum piece, even whole business datum pieces merges demodulation, guarantees receptivity; As far as receiving equipment, owing to need not continuous operation to receiving all information, thus under the prerequisite of assurance receptivity, reach purpose of power saving.
Description of drawings
Fig. 1 is basic OFDM modulation and demodulation process sketch map;
Fig. 2 is a running time-frequency resource sketch map commonly used;
Fig. 3 is the schematic flow sheet of the inventive method embodiment 1 method;
Fig. 4 is the modulation coding mode sketch map that prior art adopts business datum;
Fig. 5 is a kind of coded system sketch map of the present invention to the business datum piece;
Fig. 6 is the neighbor cell sketch map in the MBMS zone;
Fig. 7 a is the coding transmission sketch map of the present invention for the modulate traffic data of the business datum employing of sub-district A among Fig. 5;
Fig. 7 b is the coding transmission sketch map of the present invention for the modulate traffic data of the business datum employing of sub-district B among Fig. 5;
Fig. 8 is the area group sketch map in MBMS zone;
Fig. 9 a is the coding transmission sketch map of the present invention for the modulate traffic data of the business datum employing of the sub-district 1 in the MBMS zone shown in Figure 8;
The coding transmission sketch map of the modulate traffic data that Fig. 9 b adopts for the business datum of one of any sub-district, the sub-district in the MBMS zone shown in Figure 82 to 7 for the present invention;
Figure 10 is the inventive method embodiment 3 coding structure sketch mapes;
Figure 11 is the inventive method embodiment 4 method flow sketch mapes;
Figure 12 is a receiving equipment structural representation among apparatus of the present invention embodiment 5;
Figure 13 is a kind of receiving system structural representation among apparatus of the present invention embodiment 5;
Figure 14 is an another kind of receiving system structural representation among apparatus of the present invention embodiment 5;
Embodiment
In order to make those skilled in the art better understand technical scheme of the present invention, further the present invention will be described below in conjunction with concrete grammar embodiment and accompanying drawing:
Method embodiment 1:
Fig. 3 is the schematic flow sheet of method in the preferred embodiment of the present invention, and is as shown in Figure 3: as to may further comprise the steps in the present embodiment:
Step S401: network side modulating-coding business datum waiting for transmission generates business datum and sends piece.
Network side is according to OFDM modulation as shown in Figure 1; Data are at first passed through chnnel coding and interleaving treatment; And adopt certain modulator approach; Such as binary phase shift keying (Binary Phase Shift Keying is called for short BPSK), quaternary phase shift keying (Quadrature Phase Shift Keying is called for short QPSK), quadrature amplitude modulation (Quadrature amplitude modulation; Be called for short QAM) wait the formation coded identification; The current business datum piece that will transmit is carried out the OFDM modulating-coding, generate at least two business datums and send piece, and make first business datum of transmission send the total data information that piece comprises this business datum piece waiting for transmission.It both can be to send the identical repetition business datum of piece with first business datum to send piece that remaining business datum is sent piece, also can be that the incremental redundancy business datum of data that only comprises authorization information or the part system information of first business datum is sent piece.
Step S402: network side sends the business datum piece successively with the mode of sending business datum transmission piece.
Network side sends piece to the business datum that the receiving terminal transmission is generated; In transmission course, can adopt interframe time division multiplexing (Time-division multiplexing accordingly according to the configuration of network; Abbreviation TDM) mode is transmitted; Can also adopt the interior TDM mode of frame to transmit, can also adopt frequency division multiplexing (Frequency-division multiplexing is called for short TDM) mode to transmit.
If being sent piece, business datum adopt interframe TDM mode to transmit; Send the transmission intercal of piece so for each business datum; Each business datum is sent between the piece both can adopt continuous transmission, can also be according to network configuration, and several Sub-frame transmit at interval; Send the transformat of piece for each business datum.
Step S403: receiving terminal receives first business datum of current institute sending service data block and sends piece;
Step S404: receiving terminal carries out demodulation to data, and data are carried out verification.
The error coding mode that receiving terminal adopts during according to digital coding is correspondingly carried out error checking and correction to data.
Such as: if when network side is encoded, the error coding mode of employing is CRC (Cyclic Redundancy Check is called for short a CRC) coded system; So corresponding; At receiving terminal, adopt the CRC mode, decoded business datum is carried out error checking and correction.
Step S405: if check results is correct, execution in step S408; Otherwise, execution in step S406.
According to the check results of error checking and correction, know current receive and demodulation after business datum be not correct business datum, execution in step S406 then; Otherwise, execution in step S408.
Step S406: if the business datum of being transmitted is sent the BLER of piece less than the network system requirement, execution in step S407 then, otherwise execution in step S408.
At the preset errored block of the receiving terminal of network (Block Error Rate is called for short BLER) thresholding, make that this thresholding is the minimum requirements to the BLER of business datum, that is, if the BLER of business datum less than this thresholding, just satisfies the requirement of network system.Different types of business requires differently to BLER's, such as, speech business the BLER of business datum is required relatively lowly, higher BLER thresholding can be set, and data service is higher relatively to the BLER of business datum, and lower BLER thresholding can be set.
Step S407: next business datum that receives current institute sending service data block is sent piece, the business datum of current reception is sent piece merge with the business datum transmission piece that receives before, then begins to carry out from step 4.
In this step; Business datum is sent the merging of piece; Specifically according among the step S401, network side adopts with first business datum during to the coding of professional several piece and sends the identical repetitive mode of piece or adopt the incremental redundancy mode to encode, if employing is the repeated encoding mode; Then in this step, corresponding data merging mode adopts the mode of CC merging; If what adopt is the incremental redundancy coded system, then in this step, corresponding data merging mode adopts incremental redundancy to merge mode.
Step S408: stop to receive all the other business datums transmission pieces of current institute sending service data block, wait for the business datum transmission piece that receives next business datum piece.
In the reality, the time that stops can be that all the other business datums are sent the duration that piece takies, and 5 also can be the duration of default.
Generally speaking; After the business datum transmission piece that is received carries out verification; If check results is: correct, perhaps be: mistake, but its data BLER satisfies the network system requirement; Then, need not send piece and receive and demodulation all the other business datums of this business datum piece for both of these case.
Below just adopt the inventive method of method embodiment 1, sending piece for other business datum among the step S401 is to send the situation that the identical repetition business datum of piece is sent piece with first business datum, as shown in Figure 4, carries out data and illustrates:
The physical-layer techniques of supposing network side and end side all is OFDM; Its bandwidth is 5MHZ, for the transmission of certain business datum, can be 16-QAM (quadrature amplitude modulation, degree modulation) to the modulating-coding form of business datum in the present embodiment; Turbo is encoded to 1/3; Generate business datum as shown in Figure 4 and send piece 0, visible by Fig. 4, business datum is sent piece 0 need take two Sub-frame.
S501, for the transmission of the business datum of the different receiving terminals in the sub-district; Adopt the simple form that repeats to carry out the business datum transmission piece that coded system generates two repetitions at network side; Promptly adopt: 16-QAM at network side; Turbo is encoded to 2/3 (first business datum as shown in Figure 5 is sent piece, second business datum is sent piece), and network side sends piece successively on adjacent Sub-frame with two business datums that generated, and two business datums is sent piece transfer out continuously.
S502, receiving terminal receive first business datum and send piece.
First business datum that S503, receiving terminal demodulation, verification are received is sent piece,
If the verification that S504 sends piece to first business datum is correct, perhaps check errors but data BLER satisfies the network system needs then stops to receive second business datum and sends piece.Otherwise, carry out S505.
S505, continuation receive second business datum and send piece, and second business datum transmission piece and first business datum transmission piece are carried out the Chase merging.Receiving terminal is handled the data block after merging.
This shows,, only need send piece and carry out receiving demodulation first business datum for the higher receiving terminal of SNR; Thereby reach the purpose of saving power; And for the lower receiving terminal of SNR, if first business datum is sent piece and can not be satisfied the network system needs, then further receiving demodulation second business datum is sent piece; Carry out Chase with first business datum and merge, guarantee the receptivity of the receiving terminal of low SNR.
Be example with multimedia broadcast multi-broadcasting business (MBMS) below, the inventive method embodiment is described more specifically.
If more than one of the sub-district in the first MBMS zone; In ofdm system; In order adjacent edge, two sub-districts (area I as shown in Figure 6) to be used the technology of eating dishes without rice or wine to merge; Be that the receiving terminal (like receiving terminal 2 and the receiving terminal 3 of Fig. 6) that is arranged in the edge, sub-district obtains higher SNR, identical MC parameter is adopted in common two sub-districts.If but the radius of two sub-districts unequal (like the radius of the sub-district B among the figure greater than the radius of sub-district A) will cause the coverage rate of the coverage rate sub-district A of sub-district B.Adopt method of the present invention; Sub-district (sub-district B) for the lower long radius of the average SNR in the sub-district; The method that adopts is at the network side business datum transmission pieces (it both can be that the repeated encoding business datum is sent piece that this business datum is sent piece, can also be that the incremental redundancy business datum is sent piece) that generate more
Be depicted as the coding sketch map of the present invention to sub-district A like Fig. 7 a, like diagram, for the higher sub-district A of average SNR, network side adopts 16-QAM.The Turbo encoding rate is 2/3 to encode, with the encoding block that generates in two adjacent Sub-frame transmission twice, as first business datum among Fig. 7 a send piece, second business datum is sent piece.
Be depicted as the coding sketch map of the present invention like Fig. 7 b to sub-district B; Like diagram; Sub-district B also adopts 16-QAM; The Turbo encoding rate is 2/3 to encode, with the encoding block that generates in two adjacent Sub-frame transmission twice, as first business datum among Fig. 7 b send piece, second business datum is sent piece.In addition; For sub-district B; Network side also generates a 16-QAM, and the Turbo encoding rate is 3/4 business datum encoding block (sending piece like the 3rd business datum among Fig. 7 b), and the 3rd business datum transmission piece is transferred out on the adjacent Sub-frame of second business datum transmission piece.The 3rd business datum is sent part-time or the frequency resource that piece only takies a Sub-frame; And do not take a Sub-frame, so the 3rd business datum transmission piece can adopt TDM or the mode of FDM and the Radio Resource of other this Sub-frame of data sharing in interframe or the frame.
By on can find out; The inventive method embodiment adopts identical MC parameter for two neighbor cells; Both made the adjacent edge of adjacent inferior segment still use the folding of eating dishes without rice or wine to data-signal along the receiving terminal of regional location; Further, increase service data transmission for the bigger sub-district of radius (sub-district B) and send piece, guarantee that the lower receiving terminal of SNR at the edge, sub-district of long radius sub-district can obtain higher receptivity.
If second this MBMS zone is an area group; Sub-district 1 to 7 as shown in Figure 8; These 7 sub-districts are the MBMS transmission data simultaneously, and according to the folding of eating dishes without rice or wine, the receiving terminal that is in the edge, sub-district can receive data-signal from the sub-district of other MBMS transmission data; And this signal merged, thereby increase the receptivity of sub-district, edge.Yet; When receiving terminal is arranged in the edge in MBMS zone (like the receiving terminal of Fig. 8 between sub-district 3 and sub-district 8), visible by figure, if adopt art methods; This receiving terminal 4 obtains the combined signal energy from the sub-district; But because distance is distant, the combined signal energy that it can obtain is smaller, causes the MBMS regional edge along decreased performance.
Adopt this method embodiment, for the sub-district that is in MBMS regional edge edge (as in the sub-district 2 to 7 one of any), network side is to for the sub-district that is positioned at the MBMS regional center (like sub-district 1), and at least two business datums of many transmission are sent pieces.Specific as follows:
In sub-district 1; Network side adopts 16-QAM; The Turbo encoding rate is 2/3, generates two different incremental redundancy data blocks, sends piece, second business datum transmission piece like first business datum among Fig. 9 a; Wherein first business datum send piece be first transmission business datum transmission piece, and comprise the full detail of the business datum that will transmit.Network side sends piece with this two business datum and transfers out continuously at adjacent Sub-frame.
In one of any sub-district, sub-district 2 to 7; Network side adopts 16-QAM; The Turbo encoding rate is 2/3, generates three different incremental redundancy data blocks, sends piece, second business datum transmission piece and the 3rd business datum like first business datum among Fig. 9 b and sends piece; Wherein first business datum send piece be first transmission business datum transmission piece, and comprise the full detail of the business datum that will transmit.Network side sends piece with these three business datums and transfers out continuously at three continuous Sub-frame.Wherein in the sub-district 2 to 7 (it is identical to send like Fig. 9 first business datum a) that first business datum that piece, second business datum send (like Fig. 9 b) in piece and the sub-district 1 is sent piece, second business datum is sent piece, and the moment of transmitting and shared time or frequency resource are just the same.
Therefore; Edge for any sub-district; Because it is just the same that the transmission time and the shared time or the frequency resource of piece sent for first, second, third business datum respectively in each sub-district; Therefore receiving terminal still can use the folding of eating dishes without rice or wine, and the data-signal to other sub-districts merges respectively.Further,,, still can not reach the receptivity that network system requires, can also send piece to continuing to receive the 3rd business datum, and merge demodulation if after first, second business datum merged demodulation for the receiving terminal that is in MBMS regional edge edge.Adopt the inventive method, further guaranteed the receiving terminal receptivity on MBMS regional edge edge.
What be worth explanation is; This concrete grammar embodiment adopts MBMS to illustrate the application of the inventive method; But application of the present invention is not limited in MBMS, and all applicable for any business of form service data transmission with broadcasting, and should business both can be speech business; Can also be data service, can also be other communication data transport service.
Below just adopt the inventive method of method embodiment 1; Sending piece for other business datum among the step S401 is only to comprise the situation that the incremental redundancy business datum of data of authorization information or the part system information of first business datum is sent piece; Shown in figure 11, carry out data and illustrate:
S601, emitting side are constructed first business datum and are sent piece I to sent K information bit, construct second business datum and send piece P (I); To sent a next K information bit, construct first business datum and send piece I ', second business datum and send piece P (I ').,
Wherein, first business datum transmission piece I is that (L K), is error detection code to code word C0;
First business datum transmission piece I and second business datum are sent piece P (I) merging formation code word C1, and (2L L), is error correcting code;
Emitting side sends successively that first business datum is sent piece I (being C0), second business datum is sent piece P (I), and first business datum of a next K information bit is sent piece I ', second business datum transmission piece P (I ');
S602, receiving terminal receive first business datum and send piece I (error detection code C0) also decoding, verification;
If the S603 check results is correct, then receiving terminal stops to receive second business datum transmission piece P (I);
If the S604 check results is a mistake, then receiving terminal receives second business datum transmission piece P (I) of another L bit of transmitter transmission;
S605, receiving terminal merge the P (I) that receives with previous I, promptly constitute error correcting code C1, decode and verification again;
S606, receiving terminal continue to receive first business datum transmission piece I ' of a next K information bit, repeat above step S602 to S605.
Concrete, it is the data block that includes check information that second business datum is sent piece P (I); Business information data for next K bit are done same coded demodulation and reception.
If in this method among the S603 check results be correct, then receiving terminal quits work a period of time, concrete duration can be decided according to the encoding block length L; Also can preestablish, and in the prior art, receiving terminal decoding back is sent piece I (being C0) to first business datum that receives and is carried out verification; If check results is correct; Receiving equipment still needs continuous operation, up to receiving whole C 1, just begins decoding.Obviously, comparatively speaking, the present technique scheme makes the receiving equipment power saving.
Method embodiment 4:
Figure 12 is the schematic flow sheet of the inventive method, as illustrating: the present invention includes following steps:
Step S1201: network side modulating-coding business datum waiting for transmission generates business datum and sends piece.
Step S1202: network side sends the business datum piece successively with the mode of sending business datum transmission piece.
Step S1203: receiving terminal obtains the SNR of receiving terminal according to pilot tone, the number that the business datum that receives according to this SNR decision is sent piece, and receive business datum according to decision and send piece.
Preset several SNR thresholdings in system make each SNR thresholding to the number in requisition for the business datum transmission piece that receives, such as; At the receiving terminal of network system, preset three SNR thresholdings: thresholding A, thresholding B, thresholding C, wherein thresholding A is greater than thresholding B; Thresholding B is greater than thresholding C, and thresholding A, thresholding B, thresholding C be corresponding respectively to be received one, two, three business datums and send pieces, specifically according to the SNR of SNR thresholding and current receiving terminal; It is specific as follows that the business datum that judgement need to receive is sent the number of piece: if the SNR of the current receiving terminal that obtains according to pilot frequency information is greater than thresholding A; Then receive only first business datum and send piece, if the SNR of current receiving terminal is less than thresholding A, still greater than thresholding B; Then receiving terminal receives two business datums and sends piece; If the SNR of current receiving terminal is less than thresholding B, but greater than thresholding C, then receiving terminal receives three business datums and sends piece.
What be worth explanation is, decision receives business datum and sends the method for the number of piece and be not limited to originally illustrate according to SNR, by this for example thought principle set out, other method to set up can also be arranged.
Step S1204: the business datum that receives is sent piece carry out demodulation, and data are carried out verification.
Step S1205: if check results is correct, execution in step S1208; Otherwise, execution in step S1206
Step S1206: if the BLER of data less than the network system requirement, execution in step S1207 then, otherwise execution in step S1208.
Step S1207: receive next business datum transmission piece, and this business datum is sent piece carry out the data merging, return step S1204 with the business datum transmission piece that receives before.
Step S1208: all the other business datums transmission pieces that stop to receive the current business data.
Method difference as shown in Figure 4 is that the business datum first time that receiving terminal sends piece to business datum receives among this implementation method and the method embodiment 1.In method embodiment 1, receiving terminal at first receives first business datum and sends piece, then according to the quality of reception of data, receives next business datum one by one and sends piece, and merge and demodulation.And in this method embodiment, receiving terminal at first calculates the SNR that obtains current receiving terminal according to pilot frequency information, according to current SNR; The number that judgement needs the business datum of reception to send piece, if current SNR is higher, then receiving terminal only need receive less business datum and send piece; Even can receive only first business datum and send piece and both can; If but current SNR is lower, then directly receive more business datum and send piece, even all business datums is sent piece.This method embodiment has simplified the reception flow process of receiving terminal for method embodiment 1 method.
Device, apparatus embodiments 5
The present invention also provides the receiving equipment of using the inventive method, and the concrete kind of this receiving equipment is not limit, and possibly be the mobile video terminal, like PDA; Also possibly be the fixed video terminal, like digital TV, visual telephone.
With reference to Figure 13; This receiving equipment comprises antenna and middle radio-frequency module, demodulator module, program stream demodulation multiplexer module, show player module; And electricity-saving control module, wherein, receive processing by demodulator module from radio-frequency module in the signal process of antenna; To recover program stream information, transfer to the show player module at last and play;
Wherein, said demodulator module comprises business datum and receives decoding device, with reference to Figure 14; This device comprises IQ demodulation module, constellation diagram mapping block, de-interleaving block, decoder module, descrambling module, and receives control module, the optional OFDM demodulation module that comprises; Signal is separated mapping through the demodulation of IQ demodulation module by constellation diagram mapping block, and de-interleaving block carries out deinterleaving; Decoder module is decoded, and descrambling module is launched after carrying out descrambling; This reception decoding device can be made special chip separately, also can combine with other functions and make general-purpose chip.
The business datum receiving equipment is identical with method embodiment with the concrete course of work that its business datum that comprises receives decoding device among the embodiment, does not give unnecessary details at this, the existing only concise and to the point part that embodies invention thought of describing:
Whether correct the verification module is used for after decoder module sends the piece decoding to the business datum of reception business datum piece, carrying out verification, to receiving control module dateout result;
Receive control module; Be used for whether receiving the remaining business datum transmission of business datum piece piece according to the check results control of verification module; If the calibration mode block check is correct; Then said reception control module makes device stop to receive all the other business datums transmission pieces of current institute sending service data block, waits for receiving next business datum piece.
Said reception control module, if be further used for calibration mode block check mistake, said reception control module makes device continue to receive next business datum transmission piece of current institute sending service data block.
Business datum is sent piece and is merged module; Being used for that the business datum of current reception is sent piece merges with the business datum transmission piece that receives before; In this case; Said verification module, the data after being further used for being combined are sent piece and are carried out verification, and check results is submitted to said reception control module.
General; Business datum receiving equipment and its business datum that comprises receive first business datum that decoding device receives the current business data block and send step such as promptly test behind piece; And consider in the system of channel quality at needs, with reference to Figure 14, increased business datum to send piece reception decision module; Be used for according to the channel quality indication, the business datum that decision receives is for the first time sent the piece number.
Receive outside the decoding device in business datum, the business datum receiving equipment further comprises electricity-saving control module, is used for when said reception decoding device stops to receive business datum transmission piece, making receiving equipment be in power down mode.This power down mode possibly be to stop all work, also possibly be to stop part work.
More than the device of the transmission method of a kind of business datum provided by the present invention and these methods of application has been carried out detailed introduction, the explanation of above method and apparatus, apparatus embodiments just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. the transmission method of a business datum is characterized in that, may further comprise the steps:
The S1 receiving terminal receives network side and becomes at least two business datums to send piece the business datum block encoding, sends the business datum piece that the mode of piece is sent successively to send business datum;
The S2 receiving terminal carries out verification after receiving the business datum transmission piece of current institute sending service data block;
If the S3 verification is correct, then stop to receive all the other business datums transmission pieces of current institute sending service data block; When stopping to receive business datum transmission piece, receiving terminal gets into power down mode.
2. the transmission method of business datum according to claim 1 is characterized in that, receiving terminal described in the S2 receives the business datum of current institute sending service data block and sends piece, is specially:
Receiving terminal receives first business datum of current institute sending service data block and sends piece;
Perhaps,
Said receiving terminal is indicated according to channel quality, and the business datum that decision receives is for the first time sent the piece number, and said receiving terminal receives described business datum according to said decision and sends piece.
3. the transmission method of business datum according to claim 1 is characterized in that, further comprises after the verification said the carrying out of step S2:
If S4 check errors; Continue to receive next business datum transmission piece of current institute sending service data block; The business datum of current reception is sent piece to be merged with the business datum transmission piece that receives before; And carry out verification again, and carry out the reception of data according to check results, the transmission of sending service data block finishes up to the correct or current institute of verification.
4. the transmission method of business datum according to claim 3 is characterized in that, after described checking procedure, receives next business datum and sends before the piece step, further may further comprise the steps:
If the S5 receiving terminal is a mistake to the check results that said business datum transmission piece carries out error checking and correction; Then judge the FER of said business datum transmission piece; If said FER satisfies the network system requirement, then carry out said remaining business datum transmission piece that stops to receive; Otherwise, carry out next business datum of said reception and send the piece step.
5. according to the transmission method of claim 1 or 2 or 3 or 4 described business datums, it is characterized in that the said network side of step S1 becomes at least two business datums to send piece the business datum block encoding, is specially
Said network side adopts the mode of incremental redundancy to generate said business datum and sends piece; Perhaps,
Said network side adopts the mode of repeated encoding to generate said business datum and sends piece; Perhaps,
Said network side adopts said each business datum transmission piece of time division multiplexing coded system transmission in the frame; Perhaps,
Said network side adopts said each business datum of interframe time division multiplexing coded system transmission to send piece; Perhaps,
Said network side adopts said each business datum of coded system transmission of frequency division multiplexing to send piece.
6. the transmission method of business datum according to claim 5 is characterized in that:
When said network side adopts said each business datum of interframe time division multiplexing coded system transmission to send piece,
Said network side issues described business datum continuously and sends piece, perhaps,
Said network side at least one subframe at interval issues said business datum transmission piece.
7. a business datum receives decoding device, and this device comprises IQ demodulation module, constellation diagram mapping block, de-interleaving block, decoder module, descrambling module at least, wherein; The a plurality of business datums that receive the business datum piece are successively sent piece, receive the back signal through the demodulation of IQ demodulation module, and constellation diagram mapping block is separated mapping; The de-interleaving block deinterleaving, the decoder module decoding is behind the descrambling module descrambling; Send, it is characterized in that, business datum receives decoding device and further comprises:
Whether correct the verification module is used for after decoder module sends the piece decoding to the business datum of reception business datum piece, carrying out verification, to receiving control module dateout result;
Receive control module; Be used for whether receiving the remaining business datum transmission of business datum piece piece according to the check results control of verification module; If the calibration mode block check is correct; Then said reception control module makes device stop to receive all the other business datums transmission pieces so that the receiving terminal entering power down mode of current institute sending service data block, waits for receiving next business datum piece.
8. a kind of business datum as claimed in claim 7 receives decoding device, it is characterized in that:
Said reception control module, if be further used for calibration mode block check mistake, said reception control module makes device continue to receive next business datum transmission piece of current institute sending service data block,
Business datum transmission piece merges module, is used for and the business datum of current reception is sent piece merging with the business datum transmission piece that receives before;
Said verification module, the data after being further used for being combined are sent piece and are carried out verification, and check results is submitted to said reception control module.
9. receive decoding device like claim 7 or 8 described a kind of business datums, it is characterized in that device further comprises:
Business datum is sent piece and is received decision module, is used for according to the channel quality indication, and the business datum that decision receives is for the first time sent the piece number.
10. business datum receiving equipment, this receiving equipment comprise Anneta module and middle radio-frequency module, demodulator module, program stream demodulation multiplexer module, show player module at least, it is characterized in that:
Said demodulator module comprises business datum and receives decoding device, and this business datum receives decoding device and further comprises:
Whether correct the verification module is used for after decoder module sends the piece decoding to the business datum of reception business datum piece, carrying out verification, to receiving control module dateout result;
Receive control module; Be used for whether receiving the remaining business datum transmission of business datum piece piece according to the check results control of verification module; If the calibration mode block check is correct; Then said reception control module makes device stop to receive all the other business datums transmission pieces of current institute sending service data block, waits for receiving next business datum piece;
Said business datum receiving equipment further comprises electricity-saving control module, is used for when said reception decoding device stops to receive business datum transmission piece, making receiving equipment be in power down mode.
11. a kind of business datum receiving equipment as claimed in claim 10 is characterized in that:
Said reception control module, if be further used for calibration mode block check mistake, said reception control module makes device continue to receive next business datum transmission piece of current institute sending service data block,
Business datum transmission piece merges module, is used for and the business datum of current reception is sent piece merging with the business datum transmission piece that receives before;
Said verification module, the data after being further used for being combined are sent piece and are carried out verification, and check results is submitted to said reception control module.
12., it is characterized in that equipment further comprises like claim 10 or 11 described a kind of business datum receiving equipments:
Business datum is sent piece and is received decision module, is used for according to the channel quality indication, and the business datum that decision receives is for the first time sent the piece number.
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| CN102065523B (en) * | 2009-11-18 | 2014-03-12 | 华为技术有限公司 | Method for transmitting information according to target coding rate and base station |
| CN103107871A (en) * | 2011-11-09 | 2013-05-15 | 中兴通讯股份有限公司 | Method and device and system of business data sending and receiving based on enhanced multimedia broadcast multicast service (EMBMS) |
| CN104335515B (en) * | 2013-05-30 | 2017-11-24 | 华为技术有限公司 | The method, apparatus and system of service message transmission |
| US9768911B2 (en) * | 2015-06-11 | 2017-09-19 | Huawei Technologies Co., Ltd. | System and method for designing constellations and use thereof |
| CN106656435B (en) * | 2016-11-01 | 2019-06-25 | 深圳职业技术学院 | A kind of data head passes, repeating method |
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| CN1458764A (en) * | 2003-05-30 | 2003-11-26 | 西安通视数据有限责任公司 | Forward error correcting method in one-way broadcast file transmission |
| CN1768499A (en) * | 2003-04-03 | 2006-05-03 | 罗德施瓦兹两合股份有限公司 | Method and measuring device for determining an error rate without incremental redundancy |
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| US5657325A (en) * | 1995-03-31 | 1997-08-12 | Lucent Technologies Inc. | Transmitter and method for transmitting information packets with incremental redundancy |
| CN1768499A (en) * | 2003-04-03 | 2006-05-03 | 罗德施瓦兹两合股份有限公司 | Method and measuring device for determining an error rate without incremental redundancy |
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