CN103220254A - Method, equipment and system of indicating and confirming transmission format combination - Google Patents
Method, equipment and system of indicating and confirming transmission format combination Download PDFInfo
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- CN103220254A CN103220254A CN2012100195532A CN201210019553A CN103220254A CN 103220254 A CN103220254 A CN 103220254A CN 2012100195532 A CN2012100195532 A CN 2012100195532A CN 201210019553 A CN201210019553 A CN 201210019553A CN 103220254 A CN103220254 A CN 103220254A
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Abstract
The invention relates to the technical field of communication, in particular to a method, equipment and a system of indicating and confirming a transmission format combination. The method, the equipment and the system of indicating and confirming the transmission format combination are used for solving the problems that in the prior art, system overhead is increased and network transmission efficiency is reduced by adopting an explicit type indicating transmission format combination. The method of indicating the transmission format combination comprises the steps that a sending side confirms a planisphere mapping mode combination corresponding to a transmission format combination of a receiving side needing indications according to a corresponding relation of the transmission format combination and the planisphere mapping mode combination, and confirms modulation symbols corresponding to each set of transmission data, and sends the confirmed modulation symbols to the receiving side according to corresponding planisphere mapping modes corresponding to each set of transmission data of the confirmed planisphere mapping mode combination. By using the corresponding relation of the transmission format combination and the planisphere mapping mode combination, and an implicit type indicating transmission format combination, the method, the equipment and the system of indicating and confirming the transmission format combination avoid the system overhead needed by the explicit type indicating transmission format combination, and improve network transmission efficiency.
Description
Technical field
The present invention relates to communication technical field, method, equipment and the system of particularly a kind of indication and definite transformat combination.
Background technology
In traditional transmission data procedures, transmit leg need will need the transformat combination indication (TFCI of the data correspondence transmitted by certain overhead bit, Transport Format Combination Indicator) sends to the recipient, be that traditional transformat adopts explicit indicating mode, wherein TFCI represents current transformat combination indication, the value of a TFCI and a kind of transformat combination are one to one, TFCI is used to notify recipient's current effective transformat combination, promptly how to decode, demultiplexing and on suitable transmission channel, submit the data that receive; The recipient determines the transformat combination of the data correspondence of the current transmission of transmit leg by this TFCI after receiving TFCI, and then transmission channel is carried out decoding processing.
For example, at TD-SCDMA (in Time Division-Synchronous Code Division Multiple Access (code division multiple access that the time-division the is synchronous) system, a plurality of TrCH (Transport Channel, transmission channel) is multiplexed into same CCTrCH (Coded Composite Transport Channel, the coded combination transmission channel) on, and then be the resource (as frequency, code channel and time interval resource) that unit uses physical channel with CCTrCH; Wherein, corresponding TFS (the Transport Format Set of each TrCH, transmission format set), TFS is by a plurality of TF (Transport Format, transformat) forms, each TF is defined as this TrCH in a TTI (Transmission Time Interval, Transmission Time Interval), the number of the transmission block that can carry on transmission channel and the information bit that each transmission block comprises.When a plurality of TrCH were multiplexed into same CCTrCH, their TF combined and has just formed different TFC (Transport Format Combination, transformat combination); In order to make reception can know the TFC that transmit leg adopts, transmit leg need send TFCI to the recipient; The recipient determines the TFC that transmit leg adopts after receiving TFCI, and then transmission channel is decoded.
When system design,, generally adopt chnnel coding that TFCI is transmitted in order to guarantee the performance of TFCI.For example, in the TD-SCDMA system, the channel coding method that TFCI adopted depends on TFCI bit number and the modulation system that system adopted.When system adopts QPSK (Quaternary Phase Shift Keying, quarternary phase-shift keying (QPSK)) modulation system,, then adopt (32,10) subcode encoder of second order Reed-Muller sign indicating number to encode if the bit number of TFCI is 6～10; If the bit number of TFCI is 1 or 2, then adopt the repeated encoding mode that repeats 4 times to encode; If the bit number of TFCI is 3～5, then adopt (16,5) bi-orthogonal codes encoder to encode.For example, for the 12.2kbps business in the TD-SCDMA system, TTI is 20ms, the speed 176bits/5ms of physical channel carrying, carrying out the physical channel rate that the TFCI after the encoding process takies is 8bits/5ms, and then the overhead of TFCI takies than being 8/176=4.5%.As seen, the overhead that takies of TFCI is bigger; Especially under the situation of the transmission rate in business lower (as the speech business of 2.4kbps), the defective that the overhead that adopts the mode of existing explicit indication transformat combination to bring is big is more outstanding.
In sum, adopt the mode of explicit indication transformat combination, can increase overhead, reduce network transmission efficiency.
Summary of the invention
The embodiment of the invention provides method, equipment and the system of a kind of indication and definite transformat combination, and the mode that is used to solve the explicit indication transformat combination of available technology adopting increases overhead, reduces the problem of network transmission efficiency.
The embodiment of the invention provides a kind of method of indicating transformat combination, and this method comprises:
Transmitter side is according to the corresponding relation of transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence;
Described transmitter side is determined the modulation symbol of every group of transmission data correspondence according to the planisphere mapping mode of every group of transmission data correspondence in the planisphere mapping mode combination of determining, and sends the modulation symbol of determining to described receiver side.
The embodiment of the invention provides a kind of method of definite transformat combination, and this method comprises:
Receiver side is determined the combination of planisphere mapping mode according to the planisphere mapping mode of the modulation symbol correspondence of every group of transmission data correspondence receiving, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence;
Described receiver side is determined the corresponding transformat combination of described planisphere mapping mode combination according to the corresponding relation of transformat combination and the combination of planisphere mapping mode.
The embodiment of the invention provides a kind of transmitter side equipment of indicating transformat combination, and this equipment comprises:
First determination module, be used for corresponding relation according to transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence;
Second determination module is used for the planisphere mapping mode according to every group of transmission of planisphere mapping mode combination data correspondence of determining, determines the modulation symbol of every group of transmission data correspondence, and sends the modulation symbol of determining to described receiver side.
The embodiment of the invention provides a kind of receiver side equipment of definite transformat combination, and this equipment comprises:
First processing module is used for the planisphere mapping mode according to the modulation symbol correspondence of every group of transmission data correspondence receiving, determines the combination of planisphere mapping mode, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence;
Second processing module is used for the corresponding relation according to transformat combination and the combination of planisphere mapping mode, determines the corresponding transformat combination of described planisphere mapping mode combination.
The embodiment of the invention provides a kind of system of definite transformat combination, and this system comprises:
Transmitter side equipment, be used for corresponding relation according to transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side equipment, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence; And, determine the modulation symbol of every group of transmission data correspondence, and send the modulation symbol of determining to described receiver side equipment according to every group of planisphere mapping mode that transmits the data correspondence in the planisphere mapping mode combination of determining;
Receiver side equipment is used for the planisphere mapping mode according to the modulation symbol correspondence of every group of transmission data correspondence receiving, determines the combination of planisphere mapping mode, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence; And, determine the corresponding transformat combination of described planisphere mapping mode combination according to the corresponding relation of transformat combination and planisphere mapping mode combination.
The embodiment of the invention is utilized the corresponding relation of transformat combination and the combination of planisphere mapping mode, and implicit expression indication transformat combination has been avoided adopting the needed overhead of explicit indication transformat combination, has improved network transmission efficiency.
Description of drawings
Fig. 1 is the method flow diagram of first kind of indication transformat combination of the embodiment of the invention;
Fig. 2 A is first kind of corresponding planisphere mapping mode schematic diagram of embodiment of the invention QPSK modulation;
Fig. 2 B is second kind of corresponding planisphere mapping mode schematic diagram of embodiment of the invention QPSK modulation;
Fig. 3 is the method flow diagram of second kind of indication transformat combination of the embodiment of the invention;
Fig. 4 is the structural representation of transmitter side equipment of the indication transformat combination of the embodiment of the invention;
Fig. 5 is the method flow diagram of definite transformat combination of the embodiment of the invention;
Fig. 6 is the structural representation of receiver side equipment of definite transformat combination of the embodiment of the invention;
Fig. 7 is the structure of time slot schematic diagram of the TD-SCDMA system of the embodiment of the invention;
Fig. 8 indicates and determines the method flow diagram of transformat combination for the embodiment of the invention;
Fig. 9 determines the structure chart of the system of transformat combination for the embodiment of the invention.
Embodiment
The embodiment of the invention is utilized the corresponding relation of transformat combination and the combination of planisphere mapping mode, implicit expression indication transformat combination, thereby the mode that has solved the explicit indication transformat combination of available technology adopting increases overhead, reduces the problem of network transmission efficiency.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 1, the method for the indication transformat combination of the embodiment of the invention may further comprise the steps:
S101, transmitter side are according to the corresponding relation of transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence;
S102, transmitter side are determined the modulation symbol of every group of transmission data correspondence according to every group of planisphere mapping mode that transmits the data correspondence in the planisphere mapping mode combination of determining, and send the modulation symbol of determining to receiver side.
The corresponding relation of transformat combination in the embodiment of the invention and the combination of planisphere mapping mode can be made an appointment in agreement; Also can consult to determine by transmitter side and receiver side; Can also be by network side notifying user equipment side, transformat combination in this corresponding relation comprises the transformat of each transmission channel in the same transmission time (as a structure of time slot), and the planisphere mapping mode combination in this corresponding relation comprises the planisphere mapping mode of every group of transmission data correspondence in this transmission time.
Digital modulation generally uses planisphere (or claiming polar plot) to describe, stipulated the corresponding relation between constellation point and transmitted bit in the planisphere, this relation is called " mapping ", and a kind of characteristic of modulation system can be defined by planisphere by signal distributions and mapping relations definition; If the modulation system that transfer of data adopted determines that the planisphere mapping mode of this modulation system correspondence is also determined so.
Preferably, in any two the planisphere mapping modes in the combination of planisphere mapping mode, a planisphere mapping mode carries out the phase place rotation by another planisphere mapping mode and obtains;
The setting phase place that wherein the planisphere mapping mode can be turned clockwise obtains another kind of planisphere mapping mode, also the planisphere mapping mode can be rotated counterclockwise this setting phase place and obtain another kind of planisphere mapping mode, this setting phase place is to be determined by the planisphere of modulation system.
Concrete, if transmission The data QPSK is (Quaternary Phase Shift Keying, quadriphase PSK) modulation system, the corresponding planisphere mapping mode of QPSK modulation comprises two kinds, four kinds of mappings of the planisphere of stipulating in first kind of planisphere mapping mode phase place be respectively 0, pi/2, π, 3 pi/2s }, shown in Fig. 2 A; Four kinds of mappings of the planisphere of stipulating in second kind of planisphere mapping mode phase place is respectively that { π/4,3 π/4,5 π/4,7 π/4} is shown in Fig. 2 B; As can be seen, the planisphere mapping mode shown in Fig. 2 B is to obtain after the planisphere mapping mode shown in Fig. 2 A is rotated counterclockwise 45 °; If transmission The data 16QAM modulation system also can obtain another kind of planisphere mapping mode by the phase place rotation by a kind of planisphere mapping mode that the 16QAM modulation is corresponding.
Before S101, as shown in Figure 3, the method for the indication transformat combination of the embodiment of the invention is further comprising the steps of:
S103, transmitter side are divided into many group transmission data with the transmission data in N the time slot, and wherein N is the number of time slot of transmission data occupancy, and N is a positive integer;
Transmitter side is indicated the transformat combination of the transmission data correspondence in this N time slot the transformat combination of receiver side as needs.
Accordingly, the planisphere mapping mode combination of the transformat combination correspondence determined of S103 comprises every group of planisphere mapping mode that transmits the data correspondence in this N time slot.
According to the following step the transmission data in N the time slot are divided among the S103:
Transmitter side is determined the group number that the transmission data in this N time slot are divided according to the number of planisphere mapping mode in the corresponding relation and the number of transformat combination;
Transmitter side is divided into many group transmission data according to the group number of determining with the transmission data in N the time slot.
Preferably, if the number of planisphere mapping mode is a in the corresponding relation, the number of transformat combination is b, and the group number that the transmission data are divided is c, then can count c according to the group that formula one definite transmission data are divided:
Wherein, a, b, c are positive integer,
Round in the expression.
For example, the number of planisphere mapping mode is 2 in the corresponding relation, and the number of transformat combination is 8, and then the group number of dividing according to formula one definite transmission data is 3; And for example, the number of planisphere mapping mode is 2 in the corresponding relation, and the number of transformat combination is 10, and then the group number of dividing according to formula one definite transmission data is 4.
Need to prove, if the number of planisphere mapping mode is not less than the number of transformat combination in the corresponding relation, then can the transmission data in N the time slot not divided processing, promptly N the interior transmission data of time slot are one group and transmit data;
For example,, and be two, then can adopt following dual mode to set up corresponding relation if the number of planisphere mapping mode is identical with the number of transformat combination in the corresponding relation:
Mode one, to the transmission data do not divide into groups:
If first kind of planisphere mapping mode of transmission The data, then corresponding first kind of transformat combination; If second kind of planisphere mapping mode of transmission The data, then corresponding second kind of transformat combination, thereby the corresponding two kinds of different transformat combination of various constellations figure mapping mode by the transmission The data have realized the implicit expression indication of two kinds of transformat combination.
Mode two, to the transmission data divide into groups:
To transmit data and be divided into two groups of transmission data, be i.e. first group of transmission data and second group of transmission data; First group of transmission first kind of planisphere mapping mode of The data and first kind of planisphere mapping mode of second group of transmission The data, then corresponding first kind of transformat combination; First group of transmission first kind of planisphere mapping mode of The data and second kind of planisphere mapping mode of second group of transmission The data, then corresponding second kind of transformat combination; Perhaps
First group of transmission second kind of planisphere mapping mode of The data and second kind of planisphere mapping mode of second group of transmission The data, then corresponding first kind of transformat combination; First group of transmission second kind of planisphere mapping mode of The data and first kind of planisphere mapping mode of second group of transmission The data, then corresponding second kind of transformat combination;
That is: if two groups transmit the identical planisphere mapping modes of The data, then corresponding a kind of transformat combination; If two groups of transmission The data planisphere mapping modes inequality, then corresponding another kind of transformat combination; Thereby realized the implicit expression indication of two kinds of transformat combination.
Before S101, as shown in Figure 3, the method for the indication transformat combination of the embodiment of the invention is further comprising the steps of:
S104, transmitter side are encoded and multiplexing process to the transmission data (as speech business) in these a plurality of transmission channels according to the transformat combination of a plurality of transmission channel correspondences, obtain one tunnel data flow of information bit that comprises the transmission data correspondence of all transmission channels, and as the input of modulation treatment.
Based on same inventive concept, a kind of transmitter side equipment of indicating transformat combination also is provided in the embodiment of the invention, because the principle that this equipment is dealt with problems is similar to the method for above-mentioned indication transformat combination, therefore the enforcement of this equipment can repeat part and repeat no more referring to the enforcement of method.
As shown in Figure 4, the transmitter side equipment of the indication transformat combination of the embodiment of the invention comprises:
Preferably, as shown in Figure 4, the transmitter side equipment of the indication transformat combination of the embodiment of the invention also comprises:
Data are divided module 42, are used for determining before the planisphere mapping mode of every group of transmission data correspondence the transmission data in N the time slot being divided into many group transmission data, and wherein N is the number of time slot of transmission data occupancy, and N is a positive integer; And with the transformat combination of the transmission data correspondence in N the time slot transformat combination as needs indication receiver side.
Preferably, data division module 42 specifically is used for:
According to the number of planisphere mapping mode in the corresponding relation and the number of transformat combination, determine the group number that the transmission data in N the time slot are divided; And, the transmission data in N the time slot are divided into many group transmission data according to the group number of determining.
As shown in Figure 5, the method for definite transformat combination of the embodiment of the invention may further comprise the steps:
S501, receiver side are determined the combination of planisphere mapping mode according to every group that receives planisphere mapping mode that transmits the modulation symbol correspondence of data correspondence, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence;
S502, receiver side determine the corresponding transformat combination of determining among the S501 of planisphere mapping mode combination according to the corresponding relation of transformat combination and the combination of planisphere mapping mode.
Receiver side is determined the planisphere mapping mode of the modulation symbol correspondence of every group of transmission data correspondence among the S501 according to the following step:
At one group of transmission data, receiver side carries out demodulation process according to the modulation symbol that every kind in corresponding relation planisphere mapping mode transmits the data correspondence to this group respectively, and determines the planisphere mapping mode of this group modulation symbol correspondence according to the quality of data value of every kind after demodulation planisphere mapping mode correspondence;
According to the planisphere mapping mode of determining each group modulation symbol correspondence with quadrat method;
Accordingly, receiver side is determined to be made up by the planisphere mapping mode that the planisphere mapping mode of all group modulation symbol correspondences is formed among the S501;
Wherein, the quality of data value of every kind of planisphere mapping mode correspondence can characterize with the signal to noise ratio snr after the demodulation of every kind of planisphere mapping mode (Signal to Noise Ratio), also can characterize with the amplitude and noise ratio ANR after the demodulation of every kind of planisphere mapping mode (Amplitude to Noise Ratio), but the characteristic manner of the quality of data value of every kind of planisphere mapping mode correspondence is not limited to this, allly well-known to those skilled in the artly can all can be applicable to the embodiment of the invention in order to the physical quantity of the quality of data value that characterizes every kind of planisphere mapping mode correspondence.
Concrete, be that example determines that to receiver side among the S501 planisphere mapping mode of the modulation symbol correspondence of every group of transmission data correspondence describes to adopt signal to noise ratio snr characterization data mass value:
At one group of transmission data, receiver side carries out demodulation process according to the modulation symbol that every kind in corresponding relation planisphere mapping mode transmits the data correspondence to this group respectively, and determines the SNR after the demodulation of every kind of planisphere mapping mode of employing; From all SNR, select the planisphere mapping mode of maximum correspondence, and the planisphere mapping mode of maximum correspondence is transmitted the planisphere mapping mode of data as this group;
According to the planisphere mapping mode of determining each group modulation symbol correspondence with quadrat method.
Need to prove, adopt amplitude and noise ratio ANR characterization data mass value identical with signal to noise ratio snr with the planisphere mapping mode of the modulation symbol correspondence of definite every group of transmission data correspondence, promptly, the planisphere mapping mode of the maximum correspondence among the ANR after all demodulation is transmitted the planisphere mapping mode of data as this group at one group of transmission data.
After the S502, the method for definite transformat combination of the embodiment of the invention also comprises:
Receiver side carries out demultiplexing according to the transformat combination the determined bit information after to demodulation and decoding is handled, and obtains the transmission data of each transmission channel correspondence.
Based on same inventive concept, a kind of receiver side equipment of definite transformat combination also is provided in the embodiment of the invention, because the principle that this equipment is dealt with problems is similar to the method for above-mentioned definite transformat combination, therefore the enforcement of this equipment can repeat part and repeat no more referring to the enforcement of method.
As shown in Figure 6, the receiver side equipment of definite transformat combination of the embodiment of the invention comprises:
Preferably, first processing module 60 specifically is used for:
At one group of transmission data, the modulation symbol that this group is transmitted the data correspondence according to every kind in corresponding relation planisphere mapping mode carries out demodulation process respectively, and determines the planisphere mapping mode of this group modulation symbol correspondence according to the quality of data value of every kind after demodulation planisphere mapping mode correspondence.
Being modulated to example with transmission The data QPSK below describes the indication of the embodiment of the invention and the method for definite transformat combination.
Suppose that transformat combination comprises four types, is respectively TFC1, TFC2, TFC3 and TFC4; The corresponding planisphere mapping mode of QPSK modulation comprises two types, is respectively A1 and A2, and then the combination of planisphere mapping mode comprises (A1, A1), (A1, A2), (A2, A1) and (A2, A2) four kinds of different compound modes; The corresponding relation of supposing the combination of transformat combination and planisphere mapping mode is as follows:
Transformat combination TFC1 constellation figure mapping mode combination (A1, A1);
Transformat combination TFC2 constellation figure mapping mode combination (A1, A2);
Transformat combination TFC3 constellation figure mapping mode combination (A2, A1);
Transformat combination TFC4 constellation figure mapping mode combination (A2, A2);
In the above-mentioned corresponding relation, every kind of corresponding a kind of planisphere mapping mode combination of transformat combination.
Transmitter side can be according to the number (present embodiment is 4) of the transformat combination in the corresponding relation and the number (present embodiment is 2) of planisphere mapping mode among the S103, determine the packet count of drawing of transmission data, can determine to transmit the group number that data divide by formula one is 2, then the transmission data in N the time slot is divided into two groups and transmits data;
Suppose that it is TFC3 that transmitter side need be indicated the transformat combination of receiver side, then among the S101 according to the corresponding relation of transformat combination and planisphere mapping mode combination, the planisphere mapping mode of determining is combined as (A2, A1), then first group transmits The data planisphere mapping mode A2, second group of transmission The data planisphere mapping mode A1;
Accordingly, transmitter side adopts planisphere mapping mode A2 that first group of transmission data carried out modulation treatment among the S102, obtains the modulation symbol of first group of transmission data correspondence; Transmitter side adopts planisphere mapping mode A1 that second group of transmission data carried out modulation treatment, obtains the modulation symbol of second group of transmission data correspondence; And the modulation symbol of every group of transmission data correspondence will determining sends to receiver side.
Accordingly, receiver side adopts planisphere mapping mode A1 that the modulation symbol of first group of transmission data correspondence is carried out demodulation process after receiving every group of transmission modulation symbols for data among the S501, and the SNR1 after definite demodulation (or ANR1); And adopt planisphere mapping mode A2 that the modulation symbol of first group of transmission data correspondence is carried out demodulation process, and the SNR2 after definite demodulation (or ANR2), the size of comparison SNR1 and SNR2 (or size of comparison ANR1 and ANR2), if (or ANR1＞ANR2), that then determine first group of transmission The data is planisphere mapping mode A1 to SNR1＞SNR2; If (or ANR1≤ANR2), that then determine first group of transmission The data is planisphere mapping mode A2 to SNR1≤SNR2;
Adopting uses the same method determines the planisphere mapping mode that second group of transmission data adopts when sending; Suppose that the result that receiver side among the S501 is determined is: that first group of transmission data adopt when sending is planisphere mapping mode A2, that second group of transmission data adopt when sending is planisphere mapping mode A1, and then the planisphere mapping mode determined of receiver side is combined as (A2, A1);
Accordingly, receiver side is according to the corresponding relation of transformat combination and the combination of planisphere mapping mode among the S502, determine that the corresponding transformat combination of planisphere mapping mode combination (A2, A1) is TFC3, thereby determined the transformat combination of transmission data correspondences;
Receiver side can carry out demultiplexing and decoding is handled according to the data message of the transformat combination TFC3 that determines after to demodulation, obtains the transmission data of every kind of transmission channel correspondence.
Be that example describes the indication of the embodiment of the invention and the method for definite transformat combination with the TD-SCDMA system below, other system (as Wideband Code Division Multiple Access (WCDMA) WCDMA system) and TD-SCDMA system class seemingly repeat no more herein.
Suppose transmission The data QPSK modulation, time slot of the transmission data occupancy that transmitter side need send, each time slot (Time slot) structure as shown in Figure 7, then transmitter side is with the transformat combination of this time slot correspondence transformat combination as needs indication receiver side; Suppose that transformat combination comprises six types of TFC1, TFC2, TFC3, TFC4, TFC5 and TFC6, the corresponding planisphere mapping mode of QPSK modulation comprises two types of A1 and A2, suppose that transformat combination with the corresponding relation of planisphere mapping mode combination is: TFC1 corresponding (A1, A1, A1), TFC2 correspondence (A1, A1, A2), TFC3 correspondence (A1, A2, A1), TFC4 correspondence (A1, A2, A2), TFC5 correspondence (A2, A1, A1), TFC6 correspondence (A2, A1, A2); Suppose that it is TFC5 that the interior transmitter side of current time slots need be indicated the transformat combination of receiver side; The then indication and the method for definite transformat combination in the present embodiment as shown in Figure 8, may further comprise the steps:
S801, transmitter side are encoded and multiplexing process to the transmission data in these a plurality of transmission channels according to the transformat combination TFC5 of a plurality of transmission channel correspondences, obtain one tunnel data flow of information bit that comprises the transmission data correspondence of all transmission channels;
S802, transmitter side are determined the group number of the information bit division of the transmission data correspondence in the current time slots according to the number (being 2 in the present embodiment) of planisphere mapping mode in the corresponding relation and the number (being 6 in the present embodiment) of transformat combination;
Concrete, can determine that according to formula one the group number that the information bit in the current time slots is divided is 3;
S803, transmitter side are divided into three groups of data according to the group number that S802 determines with the information bit in this time slot;
Concrete, structure of time slot as shown in Figure 7, transmitter side can be with the data symbol (Data symbols) of Midamble (mid-) sign indicating number front as first group of data D1, the Data symbols of Midamble back is divided into two groups of data, respectively as second group of data D2 and the 3rd group of data D3; Also the Data symbols of Midamble sign indicating number front can be divided into two groups of data, respectively as first group of data D1 and second group of data D2, with the Data symbols of Midamble sign indicating number back as the 3rd group of data D3;
S804, transmitter side determine that according to the corresponding relation of transformat combination and the combination of planisphere mapping mode the planisphere mapping mode of transformat combination TFC5 correspondence is combined as (A2, A1, A1);
S805, transmitter side are according to the planisphere mapping mode combination of determining (A2, A1, A1), determine the planisphere mapping mode of every group of data correspondence, promptly first group of data D1 adopts planisphere mapping mode A2, second group of data D2 adopts planisphere mapping mode A1, and the 3rd group of data D3 adopts planisphere mapping mode A1;
S806, transmitter side carry out modulation treatment according to the planisphere mapping mode of every group of data correspondence determining, obtain the modulation symbol of every group of data correspondence;
S807, transmitter side send to receiver side with the modulation symbol of determining;
S808, receiver side receive the modulation symbol of all group data correspondences;
S809, at current group of modulation symbol, receiver side is respectively according to constellation mapping mode A1 and A2 in the corresponding relation, this group modulation symbol is carried out demodulation process, and determine the planisphere mapping mode of this group modulation symbol correspondence according to the quality of data value of every kind after demodulation planisphere mapping mode correspondence;
S810, receiver side judge whether current group of modulation symbol is last group modulation symbol; If then carry out S811; If not, then carry out S809;
S811, receiver side determine that the planisphere mapping mode of being made up of the planisphere mapping mode of every group of modulation symbol correspondence makes up;
S812, receiver side are determined the corresponding transformat combination of determining among the S811 of planisphere mapping mode combination according to corresponding relation;
S813, receiver side carry out demultiplexing and decoding processing according to the transformat combination of determining among the S812 to every group of data message after the demodulation process, obtain the transmission data of each transmission channel correspondence.
As shown in Figure 9, the system of definite transformat combination of the embodiment of the invention comprises:
Transmitter side equipment 90, be used for corresponding relation according to transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side equipment 91, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence; And, determine the modulation symbol of every group of transmission data correspondence, and send the modulation symbol of determining to receiver side equipment 91 according to every group of planisphere mapping mode that transmits the data correspondence in the planisphere mapping mode combination of determining;
Receiver side equipment 91 is used for the planisphere mapping mode according to the modulation symbol correspondence of every group of transmission data correspondence receiving, determines the combination of planisphere mapping mode, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence; And, determine the corresponding transformat combination of planisphere mapping mode combination according to the corresponding relation of transformat combination and planisphere mapping mode combination.
Need to prove that the transmitter side among all embodiment of the present invention (or transmitter side equipment) can be network equipment, also can be user side; Accordingly, if transmitter side (or transmitter side equipment) is a network equipment, then receiver side (or receiver side equipment) is a user side, if transmitter side (or transmitter side equipment) is a user side, then receiver side (or receiver side equipment) is a network equipment; Wherein network equipment can be base station (such as macro base station, a Home eNodeB etc.), also can be RN (relaying) equipment, can also be other network equipment well-known to those skilled in the art.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
The embodiment of the invention is utilized the corresponding relation of transformat combination and the combination of planisphere mapping mode, and implicit expression indication transformat combination has been avoided adopting the needed overhead of explicit indication transformat combination, has improved network transmission efficiency.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. a method of indicating transformat combination is characterized in that, described method comprises:
Transmitter side is according to the corresponding relation of transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence;
Described transmitter side is determined the modulation symbol of every group of transmission data correspondence according to the planisphere mapping mode of every group of transmission data correspondence in the planisphere mapping mode combination of determining, and sends the modulation symbol of determining to described receiver side.
2. the method for claim 1 is characterized in that, in any two the planisphere mapping modes in the described planisphere mapping mode combination, a planisphere mapping mode carries out the phase place rotation by another planisphere mapping mode and obtains.
3. method as claimed in claim 1 or 2 is characterized in that, described transmitter side is determined also to comprise before the planisphere mapping mode of every group of transmission data correspondence:
Described transmitter side is divided into many group transmission data with the transmission data in N the time slot, and wherein N is the number of time slot of transmission data occupancy, and N is a positive integer;
Described transmitter side is indicated the transformat combination of the transmission data correspondence in the described N time slot transformat combination of receiver side as needs.
4. method as claimed in claim 3 is characterized in that, the planisphere mapping mode combination of the transformat combination correspondence of the transmission data correspondence in N time slot comprises every group of planisphere mapping mode that transmits the data correspondence in this N time slot.
5. method as claimed in claim 3 is characterized in that, described transmitter side is divided into many group transmission data with the transmission data in N the time slot, comprising:
Described transmitter side is determined the group number that the transmission data in the described N time slot are divided according to the number of planisphere mapping mode in the described corresponding relation and the number of transformat combination;
Described transmitter side is divided into many group transmission data according to the group number of determining with the transmission data in the described N time slot.
6. the method for a definite transformat combination is characterized in that, described method comprises:
Receiver side is determined the combination of planisphere mapping mode according to the planisphere mapping mode of the modulation symbol correspondence of the every group of transmission data correspondence that receives, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence;
Described receiver side is determined the corresponding transformat combination of described planisphere mapping mode combination according to the corresponding relation of transformat combination and the combination of planisphere mapping mode.
7. method as claimed in claim 6 is characterized in that, described receiver side is determined the planisphere mapping mode of the modulation symbol correspondence of every group of transmission data correspondence according to the following step:
At one group of transmission data, described receiver side carries out demodulation process according to the modulation symbol that every kind of planisphere mapping mode in the described corresponding relation transmits the data correspondence to this group respectively, and determines the planisphere mapping mode of this group modulation symbol correspondence according to the quality of data value of every kind after demodulation planisphere mapping mode correspondence.
8. method as claimed in claim 7 is characterized in that, described quality of data value is signal to noise ratio or amplitude and noise ratio.
9. a transmitter side equipment of indicating transformat combination is characterized in that, described transmitter side equipment comprises:
First determination module, be used for corresponding relation according to transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence;
Second determination module is used for the planisphere mapping mode according to every group of transmission of planisphere mapping mode combination data correspondence of determining, determines the modulation symbol of every group of transmission data correspondence, and sends the modulation symbol of determining to described receiver side.
10. transmitter side equipment as claimed in claim 9 is characterized in that, described transmitter side equipment also comprises:
Data are divided module, are used for determining before the planisphere mapping mode of every group of transmission data correspondence the transmission data in N the time slot being divided into many group transmission data, and wherein N is the number of time slot of transmission data occupancy, and N is a positive integer; And with the transformat combination of the transmission data correspondence in the described N time slot transformat combination as needs indication receiver side.
11. transmitter side equipment as claimed in claim 10 is characterized in that, described data are divided module and specifically are used for:
According to the number of planisphere mapping mode in the described corresponding relation and the number of transformat combination, determine the group number that the transmission data in the described N time slot are divided; And, the transmission data in the described N time slot are divided into many group transmission data according to the group number of determining.
12. the receiver side equipment of a definite transformat combination is characterized in that, described receiver side equipment comprises:
First processing module is used for the planisphere mapping mode according to the modulation symbol correspondence of every group of transmission data correspondence receiving, determines the combination of planisphere mapping mode, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence;
Second processing module is used for the corresponding relation according to transformat combination and the combination of planisphere mapping mode, determines the corresponding transformat combination of described planisphere mapping mode combination.
13. receiver side equipment as claimed in claim 12 is characterized in that, described first processing module specifically is used for:
At one group of transmission data, the modulation symbol that this group is transmitted the data correspondence according to every kind of planisphere mapping mode in the described corresponding relation carries out demodulation process respectively, and determines the planisphere mapping mode of this group modulation symbol correspondence according to the quality of data value of every kind after demodulation planisphere mapping mode correspondence.
14. the system of a definite transformat combination is characterized in that, described system comprises:
Transmitter side equipment, be used for corresponding relation according to transformat combination and the combination of planisphere mapping mode, definite planisphere mapping mode combination that needs the transformat combination correspondence of indication receiver side equipment, wherein the combination of planisphere mapping mode comprises every group of planisphere mapping mode that transmits the data correspondence; And, determine the modulation symbol of every group of transmission data correspondence, and send the modulation symbol of determining to described receiver side equipment according to every group of planisphere mapping mode that transmits the data correspondence in the planisphere mapping mode combination of determining;
Receiver side equipment is used for the planisphere mapping mode according to the modulation symbol correspondence of every group of transmission data correspondence receiving, determines the combination of planisphere mapping mode, and wherein the combination of planisphere mapping mode comprises the planisphere mapping mode of every group of transmission data correspondence; And, determine the corresponding transformat combination of described planisphere mapping mode combination according to the corresponding relation of transformat combination and planisphere mapping mode combination.
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| CN114785654B (en) * | 2022-05-11 | 2024-03-29 | 上海金卓科技有限公司 | OFDM system reference symbol coding and noise power estimation and channel estimation method |
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