CN102801675B - Method and system for transmitting indication information as well as method for receiving indication information and equipment - Google Patents
Method and system for transmitting indication information as well as method for receiving indication information and equipment Download PDFInfo
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- CN102801675B CN102801675B CN201110137211.6A CN201110137211A CN102801675B CN 102801675 B CN102801675 B CN 102801675B CN 201110137211 A CN201110137211 A CN 201110137211A CN 102801675 B CN102801675 B CN 102801675B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/067—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability
Abstract
The embodiment of the invention provides a method and system for transmitting indication information as well as a method for receiving the indication information and equipment. The method for receiving the indication information comprises the following steps of: calculating demodulation soft information of a symbol, which is transmitted on an air subcarrier at a pre-set position, wherein a pre-set symbol corresponding to indication information required to be transmitted to a receiving end is loaded on the air subcarrier by a transmitting end; and determining indication information transmitted by the sending end according to the demodulation soft information. Based on the technical scheme provided by the embodiment of the invention, the indication information is transmitted by using the air subcarrier by loading the pre-set symbol corresponding to the indication information on the air subcarrier at the pre-set position, so that an extra signal does not need to be sent. Therefore, the system cost can be saved, and the efficiency of using the subcarrier can be improved.
Description
Technical field
The present invention relates to the communications field, and more specifically, relate to the method for transmitting indication information in the communications field, method and apparatus and the system that receives indication information.
Background technology
At existing GSM (Global System for Mobile Communication, global system for mobile communications) EGPRS2 of system (Enhanced GPRS phase 2, the GPRS stage two strengthening) in, introduced 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation), the high order modulation such as 32QAM is to improve efficiency of transmission, but brought the increase of Receiver Complexity, and the modulation of high-order also makes receiver responsive to non-ideal factors such as signal amplitude unbalance in phase, phase noise and frequency offsets.
In order to reduce the complexity of receiver, increase the robustness to aforesaid non-ideal factor simultaneously, 3GPP (third Generation Partnership Project, third generation partner program) set up SPEED by name (Signal Precoding Enhancements for EGPRS2DL, the enhancing precoding that EGPRS2 is descending) special topic, research is keeping under the prerequisite that existing frame structure is constant, OFDM (Orthogonal Frequency Division Multiplexing, OFDM) precoding is incorporated in existing EGPRS2 downlink business.
This SPEED also can be called as PCE2 (Precoded EGPRS2, the EGPRS2 of precoding).In PCE2, OFDM technology is being introduced on the basis of EGPRS2, also there is the technical scheme of multiple raising modulation system.In table 1, the Padded HOM (filling high order modulation) of PCE2 of take is example, illustrates and improves the high order modulation that different encoded traffic can adopt after modulation system.After adopting high order modulation, the shared number of subcarriers of user data changes, and in each burst (burst), the shared symbolic number of validated user data changes.
Table 1
From table 1, can see, before being introduced to EGPRS2, OFDM there is HSR (High SymbolRate, high power character rate) encoded traffic DBS-5 to DBS-12 is after introducing OFDM, can significant character number (loading the sub-carrier number of user data symbol) be remained within 116 by improving modulation system, thereby realize HSR to NSR (Normal Symbol Rate, conventional symbols speed) conversion, all business of EGPRS2 can be transmitted by the speed of NSR, thereby reduced the complexity of system.
But, HSR is being transformed to NSR (HSR2NSR) afterwards, because HSR2NSR and NSR exist simultaneously, make the encoded traffic under can not the identical modulation system of fine differentiation as the user terminal of receiving terminal, this is to obtain the business datum that the base station as transmitting terminal sends to have caused great difficulty.For example, the first row of associative list 1 and the 3rd is listed as and can sees, when adopting 32QAM modulation, can not distinguish present encoding business is DAS-8～9 or DBS-7～9; When adopting 64QAM modulation, can not distinguish present encoding business is DAS-10～12 or DBS-10～12.
Summary of the invention
The embodiment of the present invention provides the method for transmission indication information, method, transmitting apparatus, receiving equipment and the system thereof of reception indication information, can transmit indication information by load predetermined symbol on gap carrier wave, make receiving terminal to obtain transmitting terminal to the indication information of its transmission by gap carrier wave, thereby be convenient to the smooth execution of communication.
On the one hand, the embodiment of the present invention provides a kind of method of transmitting indication information, comprising: to the indication information of receiving terminal transmission, determine the predetermined symbol corresponding with described indication information as required; In OFDM modulation process, described predetermined symbol is loaded on the gap carrier wave in precalculated position and transmits, so that described receiving terminal is determined described indication information according to the described predetermined symbol transmitting on described gap carrier wave.
On the other hand, the embodiment of the present invention provides a kind of method that receives indication information, comprise: calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, described gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to indication information of receiving terminal transmission; According to the soft information of described demodulation, determine the described indication information of described transmitting terminal transmission.
On the one hand, the embodiment of the present invention provides a kind of transmitting apparatus, comprising again: determination module, for as required, to the indication information of receiving terminal transmission, determine the predetermined symbol corresponding with described indication information; Load-on module, transmits for described predetermined symbol being loaded in OFDM modulation process on the gap carrier wave in precalculated position, so that described receiving terminal is determined described indication information according to the described predetermined symbol transmitting on described gap carrier wave.
Another aspect, the embodiment of the present invention provides a kind of receiving equipment, comprising: computing module, for calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, described gap carrier wave is loaded the predetermined symbol corresponding to indication information that need to transmit to receiving terminal by transmitting terminal; Determination module, for determining the described indication information of described transmitting terminal transmission according to the soft information of described demodulation.
Another aspect, it is a kind of for transmitting the system of indication information that the embodiment of the present invention provides, and this system comprises transmitting apparatus and receiving equipment.Described transmitting apparatus to the indication information of described receiving equipment transmission, is determined the predetermined symbol corresponding with described indication information for as required; In OFDM modulation process, described predetermined symbol is loaded on the gap carrier wave in precalculated position and transmits.Described receiving equipment is for calculating the soft information of demodulation of the symbol transmitting on the gap carrier wave in described precalculated position; According to the soft information of described demodulation, determine the described indication information of described transmitting apparatus transmission.
Based on technique scheme, transmitting terminal transmits indication information by load predetermined symbol on gap carrier wave, and receiving terminal can obtain the indication information to its transmission by gap carrier wave.Because the transmission of indication information utilizes gap carrier wave just can complete, without sending extra signaling, so not only can save overhead, can also improve the efficiency that subcarrier utilizes.Meanwhile, because the symbol that receiving terminal utilization is transmitted on the gap carrier wave in precalculated position can be determined indication information, thereby be conducive to communication smooth execution.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the flow chart of the method for the transmission indication information of the embodiment of the present invention.
Fig. 2 is according to the flow chart of the method for the reception indication information of the embodiment of the present invention.
Fig. 3 is according to the flow chart of the other method of the reception indication information of the embodiment of the present invention.
Fig. 4 is according to the flow chart of the method for the information of the reception indication encoded traffic of the embodiment of the present invention.
Fig. 5 is according to the flow chart of the other method of the information of the reception indication encoded traffic of the embodiment of the present invention.
Fig. 6 is according to the flow chart of a method again of the information of the reception indication encoded traffic of the embodiment of the present invention.
Fig. 7 is according to the structured flowchart of the transmitting apparatus of the embodiment of the present invention.
Fig. 8 is according to the structured flowchart of the receiving equipment of the embodiment of the present invention.
Fig. 9 is according to the structured flowchart of another receiving equipment of the embodiment of the present invention.
Figure 10 is the structured flowchart of a receiving equipment again according to the embodiment of the present invention.
Figure 11 is according to the structured flowchart of the another receiving equipment of the embodiment of the present invention.
Figure 12 is according to the structured flowchart of the another receiving equipment of the embodiment of the present invention.
Figure 13 be according to the embodiment of the present invention for transmitting the structured flowchart of the system of indication information.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme of the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Described embodiment based in the present invention, the every other embodiment that those skilled in the art obtain under the prerequisite of not making creative work, should belong to the scope of protection of the invention.
First, in conjunction with Fig. 1, describe according to the method for the transmission indication information of the embodiment of the present invention.
As shown in Figure 1, the method for Fig. 1 comprises:
In S110, to the indication information of receiving terminal transmission, determine the predetermined symbol corresponding with indication information as required;
In S120, in OFDM modulation process, predetermined symbol is loaded on the gap carrier wave in precalculated position and transmits, so that receiving terminal is determined indication information according to the predetermined symbol transmitting on gap carrier wave.
For example, the method for Fig. 1 can be carried out by transmitting terminal.Transmitting terminal is by loading on the gap carrier wave in precalculated position and need to transmitting this indication information to receiving terminal to the corresponding predetermined symbol of indication information of receiving terminal transmission.Describe in detail according to the S110 of the embodiment of the present invention and S120 below.In following description, transmitting terminal can be base station, and receiving terminal can be user terminal.
In S110, transmitting terminal (for example base station) can be indicated specific information by for example, transmitting different indication informations to receiving terminal (user terminal).For these different indication informations, corresponding different predetermined symbols can be set respectively.When transmitting terminal need to be indicated customizing messages to receiving terminal, transmitting terminal is determined the predetermined symbol corresponding with this customizing messages.
Need to can comprise various information to the indication information of receiving terminal transmission.For example, indication information can be control information, special parameter, operation signaling etc.According to one embodiment of present invention, transmitting terminal can comprise the information of indicating encoded traffic to the indication information of receiving terminal transmission.For example, in HSR2NSR (encoded traffic DBS-5～12 after introducing OFDM in table 1) and the simultaneous situation of NSR (encoded traffic DAS-5～12 after introducing OFDM in table 1), due to the encoded traffic that can not distinguish under 32QAM, 64QAM modulation, so transmitting terminal can initiatively utilize predetermined symbol to help receiving terminal, encoded traffic is distinguished.
Predetermined symbol can be arbitrary value, as long as can distinguish different indication informations by predetermined symbol.According to one embodiment of present invention, predetermined symbol can comprise full 0 bit or complete 1 bit, can be conducive to like this receiving terminal and reduce the complexity of calculating.
In S120, can on the gap carrier wave in precalculated position, transmit predetermined symbol.Gap carrier wave refers to the subcarrier that does not transmit any data of stipulating in existing standard.Because some subcarrier in OFDM can transmitting user data symbol and as uses such as protection subcarriers, therefore can utilize these gap carrier waves to transmit specific indication information, thereby improve the efficiency that subcarrier is used.
Can determine in advance that certain or some locational gap carrier waves are used for transmitting special symbol.By predetermined symbol being loaded on the gap carrier wave in precalculated position, can come to receiving terminal indication information by the symbol transmitting on this gap carrier wave.
For example, as can be seen from Table 1, after HSR is transformed into NSR, under same-code business, the sub-carrier number of transmitting user data symbol reduces to some extent, thereby is free subcarrier to occur.Can utilize the one or more predetermined symbols that transmit in these gap carrier waves.
The method of the transmission indication information providing according to the embodiment of the present invention, because the transmission of indication information utilizes gap carrier wave just can complete, thereby without sending extra signaling, so not only can save overhead, can also improve the efficiency that subcarrier utilizes.Meanwhile, because receiving terminal utilizes the symbol transmitting on this gap carrier wave, can determine indication information, communication can be carried out more smoothly.
Next, with reference to figure 2, describe according to the method for the reception indication information of the embodiment of the present invention.
As shown in Figure 2, the method for Fig. 2 comprises:
In S210, calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to indication information of receiving terminal transmission;
In S220, according to the soft information of demodulation, determine the indication information of transmitting terminal transmission.
For example, the method for Fig. 2 can be carried out by receiving terminal.After receiving terminal is received the data that transmitting terminal sends, after processing through radio frequency processing, down-conversion, OFDM demodulation, channel equalization etc., can obtain the soft information of demodulation of the symbol that transmits on each subcarrier.Utilize the soft information of demodulation can determine that transmitting terminal is to the indication information of its transmission.Below, describe in detail according to the S210 of the embodiment of the present invention and S220, in the following description, transmitting terminal can be base station, receiving terminal can be user terminal.
In S210, receiving terminal (for example user terminal) can calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position as correlation technique.Conventionally the soft information of demodulation is maximum likelihood value LLR (Log Likelihood Ratio).In addition, transmitting terminal (for example base station) has loaded the corresponding special symbol of indication information that need to transmit to receiving terminal with transmitting terminal on this gap carrier wave.This special symbol can be arbitrary value, can be also the value of full 0 or complete 1.
In S220, receiving terminal utilizes the soft information of demodulation, can determine that transmitting terminal is to the indication information of its transmission.Receiving terminal can directly utilize the characteristic of the soft information of demodulation itself to determine indication information, also can utilize the correlation properties between the soft information of demodulation and the special symbol of transmission originally to determine indication information, those skilled in the art it will also be appreciated that other modes of utilizing the soft information of demodulation to determine indication information certainly.
The method of the reception indication information providing according to the embodiment of the present invention, receiving terminal, by utilizing the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, can judge that transmitting terminal is to the indication information of its transmission.Because the transmission of indication information utilizes gap carrier wave just can complete, without sending extra signaling, so not only can save overhead, can also improve the efficiency that subcarrier utilizes.Meanwhile, due to the symbol that receiving terminal utilization is transmitted on the gap carrier wave in precalculated position, can determine indication information, communication can be carried out smoothly.
Fig. 3 is according to the flow chart of the other method of the transmission indication information of the embodiment of the present invention.
In S310, calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to indication information of receiving terminal transmission.
S210 in the method for this step and Fig. 2 is basic identical.
In S320, calculate the correlation between the soft information of demodulation and predetermined symbol corresponding to the different indication informations that need to transmit to receiving terminal.
After receiving terminal calculates the soft information of demodulation in S310, can calculate respectively the correlation between the soft information of this demodulation and different predetermined symbols.
In S330, determine the maximum related value in the correlation calculating.
In S340, according to maximum related value, determine indication information.
For example, the corresponding information of the predetermined symbol that obtains this maximum related value can be defined as to transmitting terminal to the indication information of receiving terminal transmission.Correlation is larger, show to obtain this correlation both are more approaching.Thereby maximum related value can represent between the soft information of demodulation and certain predetermined symbol the most approaching, so information corresponding to this predetermined symbol is exactly indication information.
By calculating the correlation between the soft information of demodulation and different predetermined symbols, can utilize correlation power to help definite indicated indication information, there is versatility, and realize easy.
As described in conjunction with Fig. 1, transmitting terminal can be various information to the indication information of receiving terminal transmission.The indication information of take below comprises that the information of indicating encoded traffic specifically describes the method according to the embodiment of the present invention as example, it may occur to persons skilled in the art that when indication information comprises other information, also can be suitable for the inventive concept that the embodiment of the present invention provides.
Fig. 4 to Fig. 6 be according to the embodiment of the present invention in the situation that indication information comprises the flow chart of the method for the information of indicating encoded traffic.
Fig. 4 is according to the flow chart of the method for the information of the reception indication encoded traffic of the embodiment of the present invention.
In S410, calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to encoded traffic of receiving terminal indication.
For example, after OFDM is introduced to EGPRS2, in the Padded of PCE2 HOM, corresponding DAS-8～9 of 32QAM and DBS-7～9, corresponding DAS-10～12 of 64QAM and DBS-10～12.Mode that can be as shown in table 2 is that different encoded traffic arranges predetermined symbol, and predetermined symbol can be the bit of full 0 or complete 1 bit.
Table 2
| Encoded traffic | Modulation system | The bit that predetermined symbol comprises |
| DAS-8～9 | 32QAM | 00000 |
| DAS-10～12 | 64QAM | 000000 |
| DBS-7～9 | 32QAM | 11111 |
| DBS-10～12 | 64QAM | 111111 |
Can on the gap carrier wave in precalculated position, transmit set predetermined symbol.For example, in order to simplify the processing complexity of receiving terminal, the predetermined symbol under any encoded traffic all can be arranged on the gap carrier wave of antilift wire quotation marks, the gap carrier wave that makes to load predetermined symbol is consistent on frequency domain.
Receiving terminal obtains the soft information LLR of demodulation of symbol of its transmission from predetermined subcarrier.This LLR is 5 bits under 32QAM, is 6 bits under 64QAM.
In S420, according to the soft information of demodulation, determine encoded traffic type.
The example that continuation table 2 relates to, after having obtained the soft information of demodulation, can come to determine that encoded traffic belongs to DAS or DBS in the following way.Due to each user's user data, can be distributed to 4 burst upper, and therefore can combine 4 burst calculates Corr1 and Corr0, as shown in mode below.Can certainly utilize 4 parts in burst to calculate Corr1 and Corr0.After calculating Corr1 and Corr0, the magnitude relationship between utilization can determine that encoded traffic type is DAS or DBS
Corr0＝-Corr1
Wherein, n is the bit number of LLR, and LLRi represents the value of i bit of the soft information of demodulation.When bit is 0, this LLRi value is-1, and when bit is 1, this LLRi value is 1.J is the sequence number of the burst that is distributed to of user's data, herein, has combined 4 burst that user's data are distributed to and has calculated Corr1 and Corr0.When Corr0 > Corr1, determine that encoded traffic type is DAS, under 32QAM, be DAS-8～9, under 64QAM, be DAS-10～12.When Corr0 < Corr1, determine that encoded traffic type is DBS, under 32QAM, be DBS-7～9, under 64QAM, be DBS-10～12.When Corr0=Corr1, there is mistake, cannot judge encoded traffic type.
In S430, according to stealing frame bit, in encoded traffic type, determine the encoded traffic of transmitting terminal indication.
After having determined that in S420 encoded traffic type is DAS or DBS, can, as correlation technique, directly according to the frame bit (stealing bit) of stealing under EGPRS2, distinguish concrete encoded traffic.For example, in the situation that adopting 32QAM, if encoded traffic type is DAS, according to stealing frame bit, can first be identified for head (Head) form of DAS-8～9, according to this header format demodulation head, obtain header information again, and finally according to header information, determine that current encoded traffic is DAS-8 or DAS-9.
The method of the reception indication information providing according to the embodiment of the present invention, when indication information comprises the information of indicating encoded traffic, by the information of indication encoded traffic is carried on gap carrier wave and is transmitted, can indicate encoded traffic to receiving terminal, avoid in HSR2NSR and the simultaneous situation of NSR receiving terminal to be difficult to distinguish the problem of encoded traffic, simultaneously owing to utilizing gap carrier wave to transmit, without sending extra signaling, not only overhead can be saved, subcarrier utilization ratio can also be improved.
In addition, by predetermined symbol be set to full 0 complete 1 or it may occur to persons skilled in the art that based on itself, can directly determine other values of information, can directly according to the soft information of demodulation, preferentially determine encoded traffic type, determine again concrete encoded traffic, thereby realize easily the indication of encoded traffic, and be that full 0 or complete 1 o'clock amount of calculation are very little at predetermined symbol.
Fig. 5 is according to the flow chart of the other method of the information of the reception indication encoded traffic of the embodiment of the present invention.The difference of the method for Fig. 5 and the method for Fig. 4 is, the different modes arranging by predetermined symbol, and receiving terminal can directly be determined concrete encoded traffic, and without first determining encoded traffic type.
In S510, calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to encoded traffic of receiving terminal indication.
For example, due to corresponding 4 burst of user data in PCE2, can combine and utilize 4 gap carrier waves in burst to indicate encoded traffic, can certainly only utilize a part of burst in 4 burst.If each burst only utilizes a gap carrier wave to load predetermined symbol, and predetermined symbol comprises full 0 bit or comprises complete 1 bit, for same modulation system one, has 16 kinds of different compound modes and indicates encoded traffic.Can therefrom select 5 kinds of compound modes comes corresponding one by one, as shown in table 3 with the encoded traffic under same modulation system.Certainly, those skilled in the art it will also be appreciated that other arrange predetermined symbol and specific coding information mode one to one on the gap carrier wave in precalculated position.
Table 3
Therefore, for example, when transmitting terminal need to indicate present encoding business to be DAS-8 to receiving terminal, on the gap carrier wave in the precalculated position of 4 burst that relate in this user's data, load respectively the symbol that comprises full 0 bit information.
In S520, calculate the correlation between the soft information of the demodulation predetermined symbol corresponding with different coding business under same modulation system.
The soft information LLR of demodulation can be respectively with same modulation system under set predetermined symbol carry out correlation computations to obtain correlation.
The example that continuation table 3 relates to.For example, during LLR when obtain 4 burst that user data relates under 32QAM modulation system on the gap carrier wave in precalculated position, these 4 LLR are carried out to related operation with DAS-8, DAS-9, DBS-7, DBS-8, the corresponding 5 class predetermined symbols of DBS-9 respectively, obtain respectively five correlation Corr1, Corr2, Corr3, Corr4 and Corr5.Can carry out in the following way related operation:
Wherein, n is the bit number of LLR, and LLRi represents the value of i bit of the soft information of demodulation.When bit is 0, this LLRi value is-1, and when bit is 1, this LLRi value is 1.J is the sequence number of the burst that is distributed to of user's data, herein, has combined 4 burst that user's data are distributed to and has calculated Corr.Indi
jthe i position bit of predetermined symbol in j burst in expression table 3.
In S530, determine the maximum related value in the correlation calculating.
Continue above-mentioned example, from 5 correlation Corr1, Corr2, Corr3, Corr4 and Corr5, determine maximum.
In S540, according to maximum related value, determine the encoded traffic of transmitting terminal indication.
The corresponding encoded traffic of the predetermined symbol that obtains maximum related value can be defined as to the encoded traffic of indication.For example, if Corr3 is maximum in these 5 values, due to what obtain Corr3, be the predetermined symbol of DBS-7, DBS-7 is that transmitting terminal is to the encoded traffic of receiving terminal indication.
The method of the reception indication information providing according to the embodiment of the present invention, when indication information comprises the information of indicating encoded traffic, by the information of indication encoded traffic is carried on gap carrier wave and is transmitted, can indicate encoded traffic to receiving terminal, avoid in HSR2NSR and the simultaneous situation of NSR receiving terminal to be difficult to distinguish the problem of encoded traffic, simultaneously owing to utilizing gap carrier wave to transmit, without sending extra signaling, not only overhead can be saved, subcarrier utilization ratio can also be improved.In addition, by predetermined symbol is set, make it corresponding one by one with encoded traffic, can directly determine concrete encoded traffic, without re-using, steal frame bit and header information.
Fig. 6 is according to the flow chart of a method again of the information of the reception indication encoded traffic of the embodiment of the present invention.
In S610, calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to encoded traffic of receiving terminal indication.
For example, can the predetermined symbol corresponding from different encoded traffic be set as table 4.Wherein, the encoded traffic of every a line has identical Head form, and in related 4 burst of user data, the first two burst loads identical predetermined symbol on predetermined gap carrier wave, and latter two burst loads identical predetermined symbol on predetermined gap carrier wave.
Table 4
In S620, calculate the correlation between the soft information of the demodulation predetermined symbol corresponding with different coding business under same modulation system.
The example that continuation table 4 relates to.For example, under 64QAM modulation system, obtain in 4 burst that user data relates to after the LLR on predetermined gap carrier wave, these 4 LLR are carried out to related operation with DAS-10, DAS-11～12, DBS-10, the corresponding 4 class predetermined symbols in DBS-11～12 respectively, obtain respectively 4 correlation Corr1, Corr2, Corr3 and Corr4.Related operation can adopt the account form relating in S520.
In S630, determine the maximum related value in the correlation calculating.
The example that continuation table 4 relates to is determined maximum from 4 correlation Corr1, Corr2, Corr3 and Corr4.
For example, if what obtain maximum related value (Corr1 or Corr3) can only be a kind of encoded traffic, can directly according to this maximum related value, determine encoded traffic, as the S540 in the method for Fig. 5.For example, if what obtain maximum related value (Corr2 or Corr4) may be Multi-encoding business, need to carry out S640 and S650.
In S640, according to maximum related value, determine the header information of user data.
For example, when maximum related value is Corr2, corresponding DAS-11～12.Because DAS-11～12 adopt identical header format, so can carry out demodulation to obtain header information to head according to corresponding header format.Certainly, it may occur to persons skilled in the art that, if the encoded traffic of identical predetermined symbol has different header format when predetermined symbol is set, can in conjunction with stealing frame bit, determine again header information.
In S650, according to header information, determine the encoded traffic of transmitting terminal indication.
Owing to including the content of indicating encoded traffic in header information, so just can determine the encoded traffic of indication according to header information, in above-mentioned example, determine it is DAS-11 or DAS-12.
Certainly, those skilled in the art also can expect, when utilizing the predetermined symbol of table 2 setting, also can determine indicated encoded traffic by calculating correlation, and now, encoded traffic type is determined based on correlation.
Described above how the example that predetermined symbol transmits indication information (take indicate the information of encoded traffic be example) has been set; those skilled in the art are in the reference process of above-mentioned example; can easily expect that other arrange the mode that predetermined symbol transmits indication information; and can expect utilizing the compute mode such as related operation to determine indication information, these all will belong to protection scope of the present invention.
Next, in connection with Fig. 7 to Figure 12, describe according to the structured flowchart of the relevant device of the embodiment of the present invention.Because the transmitting apparatus shown in Fig. 7 is identical with the basic principle described in the method for above-mentioned Fig. 1 and the method for Fig. 2 to Fig. 6 respectively with the receiving equipment shown in Fig. 8 to Figure 12, and corresponding with each corresponding steps, so omit hereinafter the detailed description to each structure.
Fig. 7 is according to the structured flowchart of the transmitting apparatus 700 of the embodiment of the present invention.
Transmitting apparatus 700 comprises determination module 710 and load-on module 720, and determination module 710 can be processor unit, and load-on module 720 can be OFDM modulator unit.Determination module 710 can be used for the indication information transmitting to receiving terminal as required, determines the predetermined symbol corresponding with indication information.Load-on module 720 is used on the gap carrier wave that in OFDM modulation process, predetermined symbol is loaded into precalculated position and transmits, so that receiving terminal is determined indication information according to the predetermined symbol transmitting on gap carrier wave.
Above and other operation and/or the function of determination module 710 and load-on module 720 can, with reference to the S110 in the method for above-mentioned Fig. 1 and S120, for fear of repetition, not repeat them here.
According to one embodiment of present invention, predetermined symbol can comprise full 0 bit or complete 1 bit.According to one embodiment of present invention, transmitting apparatus need to can comprise the information of indicating encoded traffic to the indication information of receiving terminal transmission.
The transmitting apparatus that the embodiment of the present invention provides is due to indication information is loaded on gap carrier wave and is transmitted, thereby the information of indicating needs to transmit without the extra signaling of transmission, so not only can save overhead, can also improve the efficiency that subcarrier utilizes.Meanwhile, because utilizing the symbol transmitting on this gap carrier wave, receiving terminal known indication information, and can be so that the smooth execution of communication.
Fig. 8 is according to the structured flowchart of the receiving equipment 800 of the embodiment of the present invention.
Receiving equipment 800 can comprise computing module 810 and determination module 820, and computing module 810 can be ofdm demodulator unit, and determination module 820 can be processor unit.Computing module 810 can be used for calculating the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, and wherein, gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to indication information of receiving terminal transmission.Determination module 820 can be used for determining according to the soft information of demodulation the indication information of transmitting terminal transmission.
Above and other operation and/or the function of computing module 810 and determination module 820 can, with reference to the S210 in the method for above-mentioned Fig. 2 and S220, for fear of repetition, not repeat them here.
The receiving equipment that the embodiment of the present invention provides, by utilize the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, can judge that transmitting terminal is to the information of its indication.Because the transmission of indication information utilizes gap carrier wave just can complete, without sending extra signaling, so not only can save overhead, can also improve the efficiency that subcarrier utilizes.Meanwhile, because the symbol that receiving equipment utilization is transmitted on the gap carrier wave in precalculated position has been known indication information, can be so that the smooth execution of communication.
Fig. 9 is according to the structured flowchart of the receiving equipment 900 of the embodiment of the present invention.Computing module 910 in receiving equipment 900 and determination module 920 are basic identical with computing module 810 and determination module 820 in receiving equipment 800.
According to one embodiment of present invention, determination module 920 can comprise the first computing unit 922, the first determining unit 924 and the second determining unit 926.The first computing unit 922 can be used for calculating the soft information of demodulation from need to the predetermined symbol corresponding to the different indication informations of receiving terminal transmission between correlation.The first determining unit 924 can be used for determining the maximum related value in calculated correlation.The second determining unit 926 can be used for determining indication information according to maximum related value.
According to one embodiment of present invention, the second determining unit 926 can be used for the corresponding information of the predetermined symbol that obtains maximum related value to be defined as indication breath.
According to one embodiment of present invention, predetermined symbol can comprise full 0 bit or complete 1 bit.
Above and other operation and/or the function of the first computing unit 922, the first determining unit 924 and the second determining unit 926 can, with reference to the S320 to S340 in the method for above-mentioned Fig. 3, for fear of repetition, not repeat them here.
Like this, the receiving equipment that the embodiment of the present invention provides, by calculating the correlation between the soft information of demodulation and different predetermined symbols, can utilize correlation power to help definite indication information, has versatility, and realizes easy.
Figure 10 is according to the structured flowchart of the receiving equipment 1000 of the embodiment of the present invention.The computing module 1010 of receiving equipment 1000 and determination module 1020 are basic identical with computing module 810 and the determination module 820 of receiving equipment 800.And transmitting terminal need to comprise the information of indicating encoded traffic to the indication information of receiving equipment 1000 transmission.
According to one embodiment of present invention, determination module 1020 can comprise the 3rd determining unit 1022 and the 4th determining unit 1024.The 3rd determining unit 1022 can be used for, according to the soft information of demodulation, determining encoded traffic type.The 4th determining unit 1024 can be used for, according to stealing frame bit, determining the encoded traffic of transmitting terminal indication in encoded traffic type.
Above and other operation and/or the function of the 3rd determining unit 1022 and the 4th determining unit 1024 can, with reference to the S420 in the method for above-mentioned Fig. 4 and S430, for fear of repetition, not repeat them here.
The receiving equipment providing according to the embodiment of the present invention, when indication information comprises the information of indicating encoded traffic, transmitting terminal is by being carried in the information of indication encoded traffic on gap carrier wave and transmitting, can indicate encoded traffic to receiving equipment, avoid in HSR2NSR and the simultaneous situation of NSR receiving equipment to be difficult to distinguish the problem of encoded traffic, simultaneously owing to utilizing gap carrier wave to transmit, without sending extra signaling, not only overhead can be saved, subcarrier utilization ratio can also be improved.
In addition, by predetermined symbol be set to full 0 complete 1 or it may occur to persons skilled in the art that based on itself, can directly determine other values of certain information, receiving equipment can directly preferentially be determined encoded traffic type according to the soft information of demodulation, determine again concrete encoded traffic, thereby realize easily the indication of encoded traffic, and be that full 0 or complete 1 o'clock amount of calculation are very little at predetermined symbol.
Figure 11 is according to the structured flowchart of the receiving equipment 1100 of the embodiment of the present invention.The computing module 1110 of receiving equipment 1100 and determination module 1120 are basic identical with computing module 810 and the determination module 820 of receiving equipment 800.And transmitting terminal need to comprise the information of indicating encoded traffic to the indication information of receiving equipment 1000 transmission.
According to one embodiment of present invention, determination module 1120 can comprise the second computing unit 1122, the 5th determining unit 1124 and the 6th determining unit 1126.The second computing unit 1122 can be used for calculating the correlation between the soft information of the demodulation predetermined symbol corresponding with different coding business under same modulation system.The 5th determining unit 1124 can be used for determining the maximum related value in calculated correlation.The 6th determining unit 1126 can be used for determining according to maximum related value the encoded traffic of transmitting terminal indication.
According to one embodiment of present invention, the 6th determining unit 1126 can be used for the corresponding encoded traffic of the predetermined symbol that obtains maximum related value to be defined as the encoded traffic of indication.
Above and other operation and/or the function of the second computing unit 1122, the 5th determining unit 1124 and the 6th determining unit 1126 can, with reference to the S520 to S540 in the method for above-mentioned Fig. 5, for fear of repetition, not repeat them here.
The receiving equipment providing according to the embodiment of the present invention, when information is encoded traffic, makes it corresponding one by one with encoded traffic by predetermined symbol is set, and receiving equipment can directly be determined concrete encoded traffic, without re-using, steals frame bit and header information.
Figure 12 is according to the structured flowchart of the receiving equipment 1200 of the embodiment of the present invention.The computing module 1110 of the computing module 1210 of receiving equipment 1200, determination module 1220, the second computing unit 1222 and the 5th determining unit 1224 and receiving equipment 1100, determination module 1120, the second computing unit 1122 and the 5th determining unit 1124 are basic identical, and difference is the 6th determining unit.
According to one embodiment of present invention, the 6th determining unit 1226 of receiving equipment 1200 can comprise that first determines subelement 1227 and second definite subelement 1228.First determines that subelement 1227 can be used for according to maximum related value, determines the header information of user data.Second determines that subelement 1128 can be used for according to header information, determines the encoded traffic of transmitting terminal indication.
First determines that above and other operation and/or the function of subelement 1227 and second definite subelement 1228 can, with reference to the S640 in the method for above-mentioned Fig. 6 and S650, for fear of repetition, not repeat them here.
The receiving equipment providing according to the embodiment of the present invention, by calculating correlation, can first determine the content such as header information relevant to encoded traffic, then determine concrete encoded traffic based on this content.Thereby, can determine encoded traffic by different modes, improved the flexibility of indication encoded traffic.
Figure 13 is according to the structured flowchart of the system 1300 of the information that is used to indicate of the embodiment of the present invention.
System 1300 can comprise transmitting apparatus 1310 and receiving equipment 1320.Transmitting apparatus 1310 can be used for the indication information transmitting to receiving equipment 1320 as required, determines the predetermined symbol corresponding with indication information; In OFDM modulation process, predetermined symbol is loaded on the gap carrier wave in precalculated position and transmits.Receiving equipment 1320 can be used for calculating the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position; According to the soft information of demodulation, determine the indication information of transmitting apparatus 1310 transmission.
According to one embodiment of present invention, need to can comprise the information of indicating encoded traffic to the indication information of receiving equipment 1320 transmission.
The aforesaid operations of transmitting apparatus 1310 and/or function can be with reference to the methods of above-mentioned Fig. 1, and the aforesaid operations of receiving equipment 1320 and/or function can, with reference to the method for above-mentioned Fig. 2 to Fig. 6, for fear of repetition, not repeat them here.
The system of the information that is used to indicate providing according to the embodiment of the present invention, transmitting apparatus is by being loaded into indication information on gap carrier wave and transmitting, thereby just can make receiving equipment utilize the symbol transmitting on this gap carrier wave to determine indication information without sending extra signaling, so not only can save overhead, can also improve the efficiency that subcarrier utilizes.
Those skilled in the art can recognize, in conjunction with the various method steps of describing in embodiment disclosed herein and unit, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, step and the composition of each embodiment described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Those skilled in the art can realize described function with distinct methods to each specific application, but this realization should not thought and exceeds scope of the present invention.
The software program that the method step of describing in conjunction with embodiment disclosed herein can be carried out with hardware, processor or the combination of the two are implemented.Software program can be placed in the storage medium of any other form known in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Although illustrated and described some embodiments of the present invention, it should be appreciated by those skilled in the art that without departing from the principles and spirit of the present invention, can carry out various modifications to these embodiment, such modification should fall within the scope of the present invention.
Claims (9)
1. a method that receives indication information, is characterized in that, comprising:
The soft information of demodulation of the symbol that calculating is transmitted on the gap carrier wave in precalculated position, wherein, described gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to indication information of receiving terminal transmission;
According to the soft information of described demodulation, determine the described indication information of described transmitting terminal transmission;
Wherein, the described described indication information of determining described transmitting terminal transmission according to the soft information of described demodulation, comprising:
Calculate the soft information of described demodulation from need to the predetermined symbol corresponding to the different indication informations of receiving terminal transmission between correlation;
Determine the maximum related value in the correlation calculating;
According to described maximum related value, determine described indication information.
2. method according to claim 1, it is characterized in that, described indication information comprises the information of indicating encoded traffic, wherein, the soft information of the described demodulation of described calculating from need to the predetermined symbol corresponding to the different indication informations of receiving terminal transmission between correlation, comprising:
Calculate the correlation between the soft information of the described demodulation predetermined symbol corresponding with different coding business under same modulation system.
3. method according to claim 2, is characterized in that, describedly according to described maximum related value, determines that the encoded traffic of described transmitting terminal indication comprises:
According to described maximum related value, determine the header information of user data;
According to described header information, determine the encoded traffic of described transmitting terminal indication.
4. according to the method in any one of claims 1 to 3, it is characterized in that, described predetermined symbol comprises full 0 bit or complete 1 bit.
5. a receiving equipment, is characterized in that, comprising:
Computing module, for calculate the soft information of demodulation of the symbol transmitting on the gap carrier wave in precalculated position, wherein, described gap carrier wave is loaded by transmitting terminal need to be to the predetermined symbol corresponding to indication information of receiving terminal transmission;
Determination module, for determining the described indication information of described transmitting terminal transmission according to the soft information of described demodulation;
Wherein, described determination module comprises:
The first computing unit, for calculate the soft information of described demodulation from need to the predetermined symbol corresponding to the different indication informations of receiving terminal transmission between correlation;
The first determining unit, for determining the maximum related value of the correlation calculating;
The second determining unit, for determining described indication information according to described maximum related value.
6. receiving equipment according to claim 5, it is characterized in that, described indication information comprises the information of indicating encoded traffic, wherein, described the first computing unit, for calculating the correlation between the soft information of the described demodulation predetermined symbol corresponding with different coding business under same modulation system.
7. receiving equipment according to claim 6, is characterized in that, described the second determining unit comprises:
First determines subelement, for according to described maximum related value, determines the header information of user data;
Second determines subelement, for according to described header information, determines the encoded traffic of described transmitting terminal indication.
8. according to the receiving equipment described in any one in claim 5 to 7, it is characterized in that, described predetermined symbol comprises full 0 bit or complete 1 bit.
9. for transmitting a system for indication information, it is characterized in that, described system comprises transmitting apparatus and receiving equipment, wherein:
Described transmitting apparatus, to the indication information of described receiving equipment transmission, determines the predetermined symbol corresponding with described indication information for as required; In OFDM modulation process, described predetermined symbol is loaded on the gap carrier wave in precalculated position and transmits;
Described receiving equipment is the receiving equipment described in any one in the claims 5 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137211.6A CN102801675B (en) | 2011-05-25 | 2011-05-25 | Method and system for transmitting indication information as well as method for receiving indication information and equipment |
| PCT/CN2012/073481 WO2012159498A1 (en) | 2011-05-25 | 2012-04-01 | Method for transmitting instruction information, method for receiving instruction information, and apparatuses and systems thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137211.6A CN102801675B (en) | 2011-05-25 | 2011-05-25 | Method and system for transmitting indication information as well as method for receiving indication information and equipment |
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| CN102801675A CN102801675A (en) | 2012-11-28 |
| CN102801675B true CN102801675B (en) | 2014-10-08 |
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| CN201110137211.6A Active CN102801675B (en) | 2011-05-25 | 2011-05-25 | Method and system for transmitting indication information as well as method for receiving indication information and equipment |
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| WO2015139321A1 (en) * | 2014-03-21 | 2015-09-24 | 华为技术有限公司 | Method for transmitting data information, base station and user equipment |
| US10103868B2 (en) * | 2016-04-05 | 2018-10-16 | Qualcomm Incorporated | Narrow band synchronization signal transmission and detection |
| CN111953355B (en) * | 2020-07-29 | 2024-02-20 | 陈恩光 | Polarization code assisted joint frame synchronization method and device, electronic equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783860A (en) * | 2004-12-03 | 2006-06-07 | 北京三星通信技术研究有限公司 | Transmitting and detecting method for transmitting special information needing no order |
| CN101018269A (en) * | 2006-12-19 | 2007-08-15 | 北京创毅视讯科技有限公司 | Transmission and receiving method and end of the mobile digital multi-media broadcast physical layer signaling information |
| WO2010027153A2 (en) * | 2008-09-08 | 2010-03-11 | 엘지전자주식회사 | Pilot transmission method in a wireless communication system |
| CN101854727A (en) * | 2009-04-03 | 2010-10-06 | 中兴通讯股份有限公司 | Method for configuring resource mapping indication information |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783860A (en) * | 2004-12-03 | 2006-06-07 | 北京三星通信技术研究有限公司 | Transmitting and detecting method for transmitting special information needing no order |
| CN101018269A (en) * | 2006-12-19 | 2007-08-15 | 北京创毅视讯科技有限公司 | Transmission and receiving method and end of the mobile digital multi-media broadcast physical layer signaling information |
| WO2010027153A2 (en) * | 2008-09-08 | 2010-03-11 | 엘지전자주식회사 | Pilot transmission method in a wireless communication system |
| CN101854727A (en) * | 2009-04-03 | 2010-10-06 | 中兴通讯股份有限公司 | Method for configuring resource mapping indication information |
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| CN102801675A (en) | 2012-11-28 |
| WO2012159498A1 (en) | 2012-11-29 |
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