CN103227819B - The transmission method of business datum and system, base station and UE in machine type communication - Google Patents
The transmission method of business datum and system, base station and UE in machine type communication Download PDFInfo
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Abstract
The invention provides transmission method and system, base station and the UE of business datum in a kind of machine type communication, to solve the problem that the access quantity of user in machine type communication is restricted.Described method includes: receive the transmission data that subscriber equipment sends, and wherein, described transmission data are subscriber equipmenies according to spread spectrum information to be modulated business datum and spread processing obtains；According to described spread spectrum information, described transmission data are carried out despread and demodulated process, obtain described business datum.Technical scheme, business datum can be modulated and spread processing composition transmission data by UE according to this spread spectrum information, such that it is able to access more user by code division multiplexing, meet MTC service and access the characteristic that user is more, and, the reliability of data transmission can be improved by spreading gain, thus ensure to access the performance of user.
Description
Technical field
The present invention relates to communication technology, particularly relate to the transmission method of business datum in machine type communication, the biography system of business datum, base station, and subscriber equipment (UserEquipment in machine type communication；UE).
Background technology
Internet of Things is the important component part of generation information technology, be one based on information carriers such as the Internet, conventional telecommunications nets, allow the network that all General Physics object implementatio8 that can be independently addressable interconnect.In fast-developing wireless communication system, next generation mobile communication system as main flow, Long Term Evolution (LongTermEvolution, LTE) system is from 3GPP(The3rdGenerationPartnershipProject) R10 begins to support technology of Internet of things.
Also having a concept Machine To Machine (MachinetoMachine, M2M) being closely related with Internet of Things, it comes from the machine communication of industrial quarters, becomes the widely used vocabulary in the communications field in recent years.The object that M2M connects is mainly intelligent apparatus, and the communication network of use is mainly the conventional telecommunications nets such as cellular mobile network, can be realized the connection of the distal extension nets such as telecommunications network and sensor network by M2M gateway.M2M is referred to as machine type communication (Machine-TypeCommunication, MTC) in the 3 gpp standards.
The feature of MTC is that communication equipment is many, data traffic is little, requirement of real-time is low and low-power consumption.For the MTC service of small data quantity, it is typically chosen and uses the coding of low bit-rate to process.But, the processing mode of this MTC data transmission, it will usually make the number of users i.e. subscriber equipment of MTC (UserEquipment, UE) that can be accessed by fewer, cause the access quantity of user to be restricted.
Summary of the invention
Embodiments provide the transmission method of business datum in machine type communication, to solve the problem that the access quantity of user in machine type communication is restricted.
Accordingly, the embodiment of the present invention additionally provides base station, the transmission system of business datum in subscriber equipment, and machine type communication.
In order to solve the problems referred to above, the embodiment of the invention discloses the transmission method of business datum in a kind of machine type communication, including:
Receiving the transmission data that subscriber equipment sends, wherein, described transmission data are subscriber equipmenies according to spread spectrum information to be modulated business datum and spread processing obtains；
According to described spread spectrum information, described transmission data are carried out despread and demodulated process, obtain described business datum.
Accordingly, the embodiment of the invention also discloses the transmission method of business datum in a kind of machine type communication, including:
According to described spread spectrum information, business datum is modulated and spread processing, obtains transmitting data；
Send described transmission data to base station, according to described spread spectrum information, described transmission data are carried out despread and demodulated process for described base station, obtain described business datum.
Accordingly, the embodiment of the invention also discloses a kind of base station, including:
Receiver module, for receiving the transmission data that described subscriber equipment sends, wherein, described transmission data are subscriber equipmenies according to described spread spectrum information to be modulated business datum and spread processing obtains；
Processing module, for described transmission data are carried out despread and demodulated process, obtains described business datum.
Accordingly, the embodiment of the invention also discloses a kind of subscriber equipment, including:
Processing module, for being modulated business datum and spread processing according to described spread spectrum information, obtains transmitting data；
Described transmission data, for sending described transmission data to base station, are carried out despread and demodulated process for described base station according to described spread spectrum information, obtain described business datum by sending module.
Accordingly, the embodiment of the invention also discloses the transmission system of business datum in a kind of machine type communication, including above-mentioned base station and above-mentioned subscriber equipment.
Compared with prior art, the present invention includes advantages below:
In the embodiment of the present invention, by using technique scheme, business datum can be modulated and spread processing composition transmission data by UE according to this spread spectrum information, such that it is able to access more user by code division multiplexing, meet MTC service and access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.Then base station can receive the transmission data that UE sends, and according to this spread spectrum information, transmission data is carried out despread and demodulated process, obtains business datum.
Accompanying drawing explanation
Fig. 1 is the transmission method flow chart of business datum in the MTC that the embodiment of the present invention one provides；
Fig. 2 is the optional flow chart of transmission method of business datum in the MTC that the embodiment of the present invention one provides；
Fig. 3 is the transmission method flow chart of business datum in the MTC that the embodiment of the present invention two provides；
Fig. 4 is the optional flow chart of transmission method of business datum in the MTC that the embodiment of the present invention two provides；
Fig. 5 is to be modulated business datum and the method flow diagram of spread processing in the MTC that the embodiment of the present invention two provides；
Fig. 6 is the transmission method flow chart of business datum in the MTC that the embodiment of the present invention three provides；
Fig. 7 is the architecture of base station figure that the embodiment of the present invention four provides；
Fig. 8 is the optional structure chart of the base station that the embodiment of the present invention four provides；
Fig. 9 is the user device architecture figure that the embodiment of the present invention five provides；
Figure 10 is the optional structure chart of the subscriber equipment that the embodiment of the present invention five provides.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, the present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
The embodiment of the present invention provides the transmission method of business datum in a kind of MTC, does not use the code processing method of low bit-rate, but the spread spectrum information sent based on base station, business datum is modulated and spread processing, thus obtains transmitting Data Concurrent and give base station.On the one hand the embodiment of the present invention can access more user by code division multiplexing, such that it is able to meet MTC service to access the characteristic that user is more, on the other hand, the reliability of data transmission can be improved by spreading gain, thus ensure to access the performance of user.
Embodiment one
When carrying out the transmission of business datum in MTC, need base station and UE intercommunication to complete, the operating process of base station side is given below.
With reference to Fig. 1, give the transmission method flow chart of business datum in the MTC that the embodiment of the present invention one provides.
Step 101, receives the transmission data that UE sends.
In the embodiment of the present invention, business datum can be modulated by UE according to spread spectrum information and spread processing obtains transmitting data, then transmission data is sent to base station.Therefore base station can receive the transmission data that UE sends.
Wherein, spread spectrum information be for business datum is spread, despreading process relevant information.Referring specifically to narrated later.
Transmission data are carried out despread and demodulated process, obtain business datum by step 102.
Being modulated business datum owing to transmission data are subscriber equipmenies according to spread spectrum information and spread processing obtains, therefore base station can carry out despread and demodulated process to these transmission data, obtains the business datum of correspondence.
In sum, in the embodiment of the present invention, base station can receive the transmission data that UE sends, these transmission data are that business datum is modulated and spread processing by UE according to spread spectrum information, such that it is able to access more user by code division multiplexing, meet MTC service and access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.Thus after receiving the transmission data that UE sends, according to this spread spectrum information, transmission data can be carried out despread and demodulated process, obtain business datum.
In actual treatment, spread spectrum information can be reserved the most in advance, is respectively stored in base station and UE side, it is also possible to being determined by base station and be sent to UE, this is not construed as limiting by the application.Determine as a example by spread spectrum information by base station below, specifically discuss:
With reference to Fig. 2, give the optional flow chart of transmission method of business datum in the MTC that the embodiment of the present invention one provides.
Step 201, determines spread spectrum information, and sends spread spectrum information to UE.
Base station first has to the information such as the quantity according to the UE accessed and channel quality status and determines spread spectrum information, then this spread spectrum information is sent to UE.
Optionally, determine spread spectrum information, comprise determining that the quantity of the UE being currently accessed, and receive the channel quality data that each UE reports；Quantity according to UE and channel quality, determine spreading factor；Determine call number and the spread spectrum code sequence number of correspondence according to spreading factor, constitute spread spectrum information.
In the embodiment of the present invention, after the success of UE access network, before MTC service is initiated, the quantity of UE in network to be determined, and receive the channel quality that each UE reports.Wherein, channel quality can be described by quality of wireless channel instruction (ChannelQualityIndicator, CQI) size etc..Then spreading factor can be determined according to the quantity of UE and channel quality.
Wherein, the ratio of the signal bandwidth before the signal after spreading factor is band spectrum modulation and band spectrum modulation；The transmitted data amount of data block is actual transmissions data block size in a Physical Resource Block (PhysicalResourceBlock, PRB).
In the embodiment of the present invention, it is certain for wanting transport block size after spread spectrum, therefore, during configuration spreading factor, the product of spreading factor and UE actual transmissions data block size will be equal to data block size after spread spectrum, i.e. spreading factor and transport block size has incidence relation, therefore can set up index according to this incidence relation, thus may determine that another by one of which.Further, can also identify call number when setting up index, can be found spreading factor and the transmitted data amount of data block of correspondence by this call number, therefore base station is when feedback, only need to feed back this call number.
Therefore, this index can be stored in spreading factor table, therefore, in this spreading factor table, call number, spreading factor and transport block size have one-to-one relationship, i.e. one call number uniquely corresponding a kind of spreading factor and transport block size, thus spreading factor and the transport block size of correspondence can be found by call number.
Such as, when MTC uplink, generally carry out data transmission in units of a PRB.In a PRB, removing 1 symbol that pilot tone is occupied, also 6 symbols can use for the UE of MTC, and the most utilizable resource grains subnumber (ResourceElement, RE) has 72.Further, for the convenience in processing and the accuracy of transmission, it is also contemplated that the orthogonality in spread spectrum, therefore can be only with 64 resource particle therein, remaining 8 resource particle are filled to " 0 " or other related datas.
Due to the characteristic of MTC service, business datum is smaller, even just transmits several bit in a PRB, therefore based on above-mentioned processing method, can set up spreading factor table according to index, and wherein a kind of form of spreading factor table is as shown in table 1:
| Call number (index) | Transport block size | Spreading factor |
| 0 | 1 | 64 |
| 1 | 4 | 16 |
| 2 | 8 | 8 |
| 3 | 16 | 4 |
Table 1
Above-mentioned table 1 is only a kind of form of expression of spreading factor table, should not be understood as the restriction to the embodiment of the present invention.Further, in change, only citing discusses several situations of spreading factor, and in actual treatment, spreading factor can also be 32 other data such as grade, does not enumerates herein, should not be understood as the restriction to the embodiment of the present invention.
Optionally, according to quantity and the channel quality data of UE, determine spreading factor, including: the type of spreading factor is determined according to current channel quality；Quantity according to UE determines the spreading factor of correspondence from each type.
In the embodiment of the present invention, owing to spreading factor has multiple, therefore can divide spreading factor type according to the size of spreading factor, as in table 1, spreading factor is the first kind when being 64 or 16, be Second Type when spreading factor is 8 or 4.Therefore, it can carry out the selection of spreading factor based on method below:
First carry out the selection of spreading factor type according to channel quality status, channel quality status is under different channel circumstances here, and wherein, the EPA that channel circumstance can be given according to standard, EVA, ETU channel is classified, by arranging different threshold values.Corresponding threshold value is respectively XEPA,XEVA,XETU, as a example by EPA channel, it is assumed that corresponding threshold value is 5dB, it may be assumed that XEPA=5dB, (5dB here is simply it is assumed that concrete threshold value needs to be given by emulation under typical scene, then base station side it is arranged in, the CQI measured value that UE reports compares therewith, then judges the quality condition of channel), if the CQI of respective channels is more than threshold XEPA(that is: CQI > XEPA), then show that channel quality is preferable, select the first type；If instead the CQI of respective channels is less than threshold XEPA(that is: CQI≤XEPA), show that channel quality is not fine, select the spreading factor of the second type.
Secondly the selection of spreading factor is carried out according to the quantity of the UE accessed:
If a) quantity of the UE accessed is the most, in order to ensure the quantity of UE, can select spreading factor bigger in each type, the such as first kind select 64, Second Type selects 8；If b) quantity of the UE accessed is fewer, send some business datums in order to more, can select spreading factor less in each type, the such as first kind select 16, Second Type selects 4.Here consider the quantity of channel quality status and UE, determine which kind of spreading factor of selection, and then determine spread spectrum information, it is ensured that number of users is compromised with the effective of transmission data block reliability.
In addition in the embodiment of the present invention, each spreading factor all correspondences spread code accordingly, according to the spread spectrum follow-up spread processing that can carry out of code, therefore can from the spread spectrum code that spreading factor is corresponding optional one group of spread spectrum code be transferred to UE so that it is follow-up can carry out spread processing.
Optionally, determine call number and the spread spectrum code sequence number of correspondence according to spreading factor, constitute spread spectrum information, including: from spreading factor table, search the call number that spreading factor is corresponding, wherein, spreading factor in spreading factor table, transport block size and call number have relation one to one；Determine and spreading factor spreads the spread spectrum code sequence number that code is corresponding；Call number and spread spectrum code sequence number are constituted spread spectrum information.
The embodiment of the present invention saves spreading factor in spreading factor table, transport block size and the one-to-one relationship of call number, in order to reduce data volume during data transmission, save resource, therefore the call number of correspondence can be determined after determining spreading factor according to this spreading factor table, thus follow-up this call number UE can be sent to.UE is follow-up equally finds spreading factor corresponding to call number and transport block size according to this spreading factor table.
In addition in the embodiment of the present invention, can corresponding different spread spectrum code according to different demand spreading factors, such as, in order to ensure to spread the orthogonality of code, walsh sequence (Walsh code) can be used to carry out spread processing, below as a example by a length of the 4 and 8 of spread spectrum code, size according to data block, if spreading factor is K, then can take following value, be listed below:
As K=4, orthogonal Walsh code sequence can be as shown in table 2:
| Serial number | Sequence (sequence) |
| 0 | [1 1 1 1] |
| 1 | [1 -1 1 -1] |
| 2 | [1 1 -1 -1] |
| 3 | [1 -1 -1 1] |
Table 2
And for example, as K=8, orthogonal Walsh code sequence can be as shown in table 3:
| Serial number | Sequence (sequence) |
| 0 | [1 1 1 1 1 1 1 1] |
| 1 | [1 1 1 1 -1 -1 -1 -1] |
| 2 | [1 -1 1 -1 1 -1 1 -1] |
| 3 | [1 -1 1 -1 -1 1 -1 1] |
| 4 | [1 1 -1 -1 1 1 -1 -1] |
| 5 | [1 1 -1 -1 -1 -1 1 1] |
| 6 | [1 -1 -1 1 1 -1 -1 1] |
Table 3
Above-mentioned give two kinds of orthogonal Walsh code sequence corresponding to spreading factor, be only used for specifically discussing herein, should not be understood as the restriction to the embodiment of the present invention.
Therefore, it can determine the spread spectrum code sequence number of correspondence according to spreading factor.In actual transmissions, for selecting the spread spectrum code that spreading factor is corresponding to have multiple method, as determined spread spectrum code sequence number according to the sequencing of UE access network, if the 1st the UE distribution spread spectrum code sequence number accessed is 1, the UE distribution spread spectrum code sequence number that the 2nd is accessed is 2；The UE distribution spread spectrum code sequence number that 100 are accessed also as before is 1, and front 101～200 UE distribution spread spectrum code sequences number accessed are 2 etc., and this is not limited by the embodiment of the present invention, can be according to practical situation depending on.
After determining call number and spread spectrum code sequence number by said method, UE carries out the process such as spread spectrum for convenience, and improve the utilization rate of resource, the call number that base station can determine, and the spread spectrum code sequence number composition spread spectrum information determined according to spreading factor according to spreading factor.
I.e. have only to send call number and the serial number of spread spectrum code, as known from Table 1, feedback call number has only to 2bit, and the longest spread spectrum code is 64, thus at most need 6bit to show spread spectrum code sequence number, thus base station can by the feedback of 8 bits indicate spreading factor size (i.e. call number) and spread spectrum code serial number.Due to MTC service typically no hybrid automatic repeat-request (HybridAutomaticRepeatRequest, HARQ) handling process, Physical HARQ Indicator Channel (PhysicalHARQindicatorchannel can be utilized, PHICH) 2bit carries call number, in addition, in embodiments of the present invention, owing to not using chnnel coding, so in the 5bit of MCS, have only to 2bit and represent modulation system, remaining 3bit can here feed back spread spectrum information and use, additionally newdataindicatorke can contribute 1bit, redundancyversion can contribute 2bit, in a word；6bit provided herein can be utilized to distribute to the spread spectrum code sequence number of UE to feed back base station.
Step 202, receives the transmission data that UE sends.
Then can receive the transmission data that UE sends, wherein, transmission data are subscriber equipmenies according to spread spectrum information to be modulated business datum and spread processing obtains.
Transmission data are carried out despread and demodulated process, obtain business datum by step 203.
Then transmission data can be carried out despread and demodulated process, obtain the business datum of correspondence.
Optionally, transmission data are carried out despread and demodulated process, obtains business datum, including: determine spreading factor according to the call number in spread spectrum information；According to the spread spectrum code sequence number in spread spectrum information and spreading factor, determine the spread spectrum code of correspondence；According to spread spectrum code, transmission data are carried out despreading process, the data block after being modulated；It is demodulated processing by the data block after modulation, obtains business datum.
First call number can be obtained from the spread spectrum information distributing to UE, then according to this call number search spreading factor table so that it is determined that spread spectrum time use spreading factor, spread spectrum code sequence number is obtained again from spread spectrum information, thus the spread spectrum code of use is determined according to spreading factor and this spread spectrum code sequence number, then according to this spreading factor and corresponding spread spectrum code, transmission data can be carried out despreading process, data block after being modulated, it is being demodulated processing to the data block after modulation, is obtaining business datum.
Wherein, if UE side is after spreading, data after spread spectrum are carried out inverse fast Fourier transform (InverseFastFourierTransform, IFFT), base station side first can also carry out fast Fourier transform (FastFourierTransform to transmission data, FFT), then carry out de-spreading, demodulation etc. processes operation.
In sum, in the embodiment of the present invention, base station can predefine spread spectrum information and be sent to UE, thus business datum can be modulated and spread processing by UE according to this spread spectrum information, such that it is able to access more user by code division multiplexing, meet MTC service and access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.Thus after receiving the transmission data that UE sends, according to this spread spectrum information, transmission data can be carried out despread and demodulated process, obtain business datum.
Secondly, the embodiment of the present invention can consider quantity and the channel quality of UE, so that it is determined that corresponding spread spectrum information, it is ensured that the number of users effective compromise with transmission data block reliability.
Again, in the embodiment of the present invention, MCS is passed through in base station, HARQ controls bit and NewdataIndicaror and Redundancyversion and call number and the spread spectrum code sequence number of spreading factor is constituted spread spectrum information, and is transferred to MTCUE, it is possible to reduce the waste of resource.
Embodiment two
When carrying out the transmission of business datum in MTC, need base station and UE intercommunication to complete, the operating process of UE side is given below.
With reference to Fig. 3, give the transmission method flow chart of business datum in the MTC that the embodiment of the present invention two provides.
Step 301, is modulated and spread processing business datum according to spread spectrum information, obtains transmitting data.
Business datum can be modulated and spread processing by UE according to this spread spectrum information, concrete, user data can be modulated by UE, as carried out constellation modulation, then determine spread spectrum code according to spreading factor, and according to this spread spectrum code, the business datum after modulation is carried out spread processing.Obtain transmitting data.Wherein, this spread spectrum information can be appointed with UE in advance, it is also possible to having base station to send, this is not construed as limiting by the embodiment of the present invention.
Step 302, sends transmission data to base station.
After transmission data determine, transmission data can be sent to base station, according to spread spectrum information, these transmission data are carried out despread and demodulated process for base station, obtain business datum, i.e. subsequent base stations can carry out despread and demodulated and processes according to changing spread spectrum information and obtain business datum, it is achieved thereby that the transmission of business datum in machine type communication transmission data.
In sum, in the embodiment of the present invention, business datum can be modulated and spread processing by UE based on spread spectrum information, thus obtain transmitting Data Concurrent and give base station.Such that it is able to access more user by code division multiplexing, such that it is able to meet MTC service to access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.
Below as a example by receiving base station transmission transmission information, specifically discuss.
With reference to Fig. 4, give the optional flow chart of transmission method of business datum in the MTC that the embodiment of the present invention two provides.
Step 401, receives the spread spectrum information that base station sends.
User data to be spread by MTCUE, first can receive the spread spectrum information that base station side sends, and wherein, spread spectrum information is the relevant information spreading business datum, such as, and spreading factor, the spread spectrum data such as code.
Step 402, is modulated and spread processing business datum according to spread spectrum information, obtains transmitting data.
After getting spread spectrum information, just according to this spread spectrum information, business datum can be modulated and spread processing, concrete, user data can be modulated by UE, as carried out constellation modulation, then determine spread spectrum code according to spreading factor, and according to this spread spectrum code, the business datum after modulation is carried out spread processing.Obtain transmitting data.
Optionally, according to spread spectrum information, business datum is modulated and spread processing, obtains transmitting data, including: according to spread spectrum information, business datum constituted at least one data block；Data block is modulated the data block processed after being modulated；According to spread spectrum information, the data block after modulation is carried out spread processing, obtain transmitting data.
Transport block size can be obtained, such that it is able to the business datum of MTC is constituted at least one data block according to this transport block size according to spread spectrum information.Then each data block is modulated the data block processed after being modulated.Obtain spreading factor by spread spectrum information again, thus according to this spreading factor, the data block after modulation is carried out spread processing, obtain transmitting data.
Optionally, according to spread spectrum information, business datum is constituted at least one data block, including: determine transport block size according to spread spectrum information；Obtain the total amount of data of business datum, and total amount of data is compared with transport block size；When total amount of data is less than or equal to transport block size, business datum is constituted a data block；When total amount of data is more than transport block size, splitting business datum, business datum constitutes n data block on the basis of transmitted data amount, wherein, n is positive integer.
Optionally, according to spread spectrum information, the data block after modulation is carried out spread processing, obtain transmitting data, including: from spreading factor table, search the spreading factor that in spread spectrum information, call number is corresponding, wherein, spreading factor in spreading factor table, transport block size and call number have relation one to one；According to the spread spectrum code sequence number in spread spectrum information and spreading factor, determine the spread spectrum code of correspondence；According to spread spectrum code, the data block after modulation is carried out spread processing, obtain transmitting data.
Discussion based on foregoing, is discussed in detail below modulation and the spread processing flow process of business datum, specifically includes following operating procedure:
With reference to Fig. 5, give in the MTC that the embodiment of the present invention two provides and business datum is modulated and the method flow diagram of spread processing.
Step 501, determines transport block size according to spread spectrum information.
In the embodiment of the present invention, when business datum is constituted data block, first can determine transport block size by spread spectrum information, concrete, spread spectrum information comprises call number, therefore can search spreading factor table according to this call number, thus obtain transport block size.
Step 502, obtains the total amount of data of business datum, whether detects this total amount of data more than transport block size.
Then can obtain the business datum of this secondary transmission, and determine the total amount of data of business datum.Then whether this total amount of data is detected more than transport block size.
If so, it is that total amount of data is more than transport block size, then subsequent execution step 304；If it is not, i.e. total amount of data is less than or equal to transport block size, then subsequent execution step 303.
Step 503, constitutes a data block by business datum.
When total amount of data is less than transport block size, explanation business datum to be transmitted than in actual transmissions can transmitted data amount little, therefore the part not enough part in business datum composition one data block, and data block the most not filled business datum can be filled with 0.
When total amount of data is equal to the size of data of transmission, illustrating that business datum to be transmitted is identical with the size of data can transmitted in actual transmissions, the most equally business datum constitutes a data block.
Step 504, splits business datum on the basis of transport block size, and business datum constitutes n data block.
When total amount of data is more than transport block size, explanation business datum to be transmitted is bigger than the data block can transmitted in actual transmissions, i.e. one data block cannot carry all of business datum, therefore, this business datum can constitute several data blocks to be transmitted, concrete, on the basis of transport block size, business datum can be split, when i.e. business datum being split, whenever reaching the size of this data block, just business datum is divided and can go out a data block, follow-up continuation is split, business datum finally can be constituted n data block, wherein, n is positive integer.Wherein, if last data block is not filled up, then can be filled with 0.
Step 505, is modulated the data block processed after being modulated to data block.
Then the data block of segmentation can be modulated, as used constellation to adjust the data block after making thus being modulated.
Step 506, searches the spreading factor that in spread spectrum information, call number is corresponding from spreading factor table.
MTCUE can pass through spreading factor table, searches the spreading factor that in spread spectrum information, call number is corresponding.
Step 507, according to the spread spectrum code sequence number in spreading factor spread spectrum information and spreading factor, determines the spread spectrum code of correspondence.
Spread spectrum information also includes spread spectrum code sequence number, can determine, according to spread spectrum information, the spread spectrum code that this frequency expansion sequence number is corresponding.
Step 508, carries out spread processing according to this spread spectrum code to the data block after modulation, obtains transmitting data.
Additionally, after business datum is modulated and spreads, it is also possible to the data after spread spectrum are carried out inverse fast Fourier transform (InverseFastFourierTransform, IFFT), then arrives time frequency space and carry out resource mapping process, thus obtain transmitting data.
Step 403, sends transmission data to base station.
In sum, the spread spectrum information that the embodiment of the present invention sends based on base station, business datum is modulated and spread processing, thus obtains transmitting Data Concurrent and give base station.Such that it is able to access more user by code division multiplexing, such that it is able to meet MTC service to access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.
Secondly, business datum can be split by the embodiment of the present invention according to transport block size, facilitates the transmission of business datum.And determine spread spectrum code according to spreading factor, quickly business datum is spread, such that it is able to access more user, and improved the reliability of data transmission by spreading gain.
Again, the present invention utilizes the method for spread spectrum, and different users accesses parallel according to orthogonal spread spectrum code, it is ensured that the access problem of MTC service mass users, removes cataloged procedure simultaneously, simplifies handling process.
Embodiment three
When carrying out the transmission of business datum in MTC, need base station and UE intercommunication to complete, the interaction process flow process of base station and UE is given below.
With reference to Fig. 6, give the transmission method flow chart of business datum in the MTC that the embodiment of the present invention three provides.
6.1, base station determines spread spectrum information.
Wherein it is determined that spread spectrum information, comprise determining that the quantity of the subscriber equipment being currently accessed, and receive the channel quality of each user equipment to report；Quantity according to subscriber equipment and channel quality, determine spreading factor；Determine call number and the spread spectrum code sequence number of correspondence according to spreading factor, constitute spread spectrum information.
6.2, base station sends spread spectrum information to UE.
6.3, business datum is modulated and spread processing by UE spread spectrum information, obtains transmitting data.
Wherein, according to spread spectrum information, business datum is modulated and spread processing, obtains transmitting data, including: according to spread spectrum information, business datum constituted at least one data block；Data block is modulated the data block processed after being modulated；According to spread spectrum information, the data block after modulation is carried out spread processing, obtain transmitting data.
Concrete, according to spread spectrum information, business datum is constituted at least one data block, including: determine transport block size according to spread spectrum information；Obtain the total amount of data of business datum, and total amount of data is compared with transport block size；When total amount of data is less than or equal to transport block size, business datum is constituted a data block；When total amount of data is more than transport block size, splitting business datum, business datum constitutes n data block on the basis of transport block size, wherein, n is positive integer.
Concrete, according to spread spectrum information, the data block after modulation is carried out spread processing, obtain transmitting data, including: from spreading factor table, search the spreading factor that in spread spectrum information, call number is corresponding, wherein, spreading factor in spreading factor table, transport block size and call number have relation one to one；According to the spread spectrum code sequence number in spread spectrum information and spreading factor, determine the spread spectrum code of correspondence；According to spread spectrum code, the data block after modulation is carried out spread processing, obtain transmitting data.
6.4, transmission data are sent to base station by UE.
6.5, base station carries out despread and demodulated process to transmission data, obtains business datum.
Wherein, transmission data are carried out despread and demodulated process, obtains business datum, including: determine spreading factor according to the call number in spread spectrum information；According to the spread spectrum code sequence number in spread spectrum information and spreading factor, determine the spread spectrum code of correspondence；According to spread spectrum code, transmission data are carried out despreading process, the data block after being modulated；It is demodulated processing by the data block after modulation, obtains business datum.
In sum, in the embodiment of the present invention embodiment of the present invention, base station can predefine spread spectrum information and be sent to UE, thus business datum can be modulated and spread processing by UE according to this spread spectrum information, thus obtain transmitting Data Concurrent and give base station, base station carries out de-spreading again, demodulation etc. processes and obtains transmitting data.Such that it is able to access more user by code division multiplexing, MTC service can be met and access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.
Embodiment four
With reference to Fig. 7, give the architecture of base station figure that the embodiment of the present invention four provides.
Accordingly, the embodiment of the present invention additionally provides a kind of base station, including receiver module 72 and processing module 73.
Wherein receiver module 72 is for receiving the transmission data that subscriber equipment sends, and wherein, transmission data are subscriber equipmenies according to spread spectrum information to be modulated business datum and spread processing obtains；
Processing module 73 is connected with receiver module 72, and processing module 73 carries out despread and demodulated process for the transmission data receiving receiver module 72, obtains business datum.
In the present embodiment, this transmitting device can be configured at base station side.
In sum, in the embodiment of the present invention, base station can predefine spread spectrum information and be sent to UE, thus business datum can be modulated and spread processing by UE according to this spread spectrum information, such that it is able to access more user by code division multiplexing, meet MTC service and access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.Thus after receiving the transmission data that UE sends, according to this spread spectrum information, transmission data can be carried out despread and demodulated process, obtain business datum.
With reference to Fig. 8, give the optional structure chart of the base station that the embodiment of the present invention four provides.
This base station also includes determining module 70 and sending module 71.
Determine that module 70 is for determining spread spectrum information；Sending module 71 respectively with determine that module 70 and receiver module 72 are connected, sending module 71 is for determining that the spread spectrum information that module 70 determines is sent to subscriber equipment；The transmission data that then receiver module 72 receives are that business datum is modulated by the subscriber equipment spread spectrum information according to sending module 71 transmission of base station and spread processing obtains.
Optionally, determine module 70, determine that submodule 702 and spread spectrum information constitute submodule 703 including reception submodule 701, spreading factor.
Wherein receive submodule 701, for determining the quantity of the subscriber equipment being currently accessed, and receive the channel quality of each user equipment to report；Spreading factor determine submodule 702 respectively with receive submodule 701 and spread spectrum information and constitute submodule 703 and be connected, spreading factor determines that submodule 702 is for according to receiving quantity and the channel quality of reception of the subscriber equipment that submodule 701 determines, determining spreading factor；Spread spectrum information constitutes submodule 703, for determining that the spreading factor that submodule 702 determines determines call number and the spread spectrum code sequence number of correspondence according to spreading factor, constitutes spread spectrum information.
Optionally, spread spectrum information determines submodule 702, specifically for determining the type of spreading factor according to current channel quality；Quantity according to subscriber equipment determines the spreading factor of correspondence from each type.
Optionally, spread spectrum information constitutes submodule 703, and specifically for searching the call number that spreading factor is corresponding from spreading factor table, wherein, spreading factor in spreading factor table, transport block size and call number have relation one to one；Determine and spreading factor spreads the spread spectrum code sequence number that code is corresponding；Call number and spread spectrum code sequence number are constituted spread spectrum information.
Optionally, processing module 73, determine that submodule 731 and spread spectrum code determine that submodule 732, despreading process submodule 733 and demodulation process submodule 734 including spreading factor.
Spreading factor determines submodule 731, and the call number in the spread spectrum information received according to receiver module 72 determines spreading factor；Spread spectrum code determines that submodule 732 determines that submodule 731 and despreading process submodule 733 and be connected respectively with spreading factor, spread spectrum code determines that the submodule 732 spread spectrum code sequence number in the spread spectrum information received according to receiver module 72 and spreading factor determine that submodule 731 determines spreading factor, determines the spread spectrum code of correspondence；Despreading process submodule 733 is connected with despreading process submodule 733 respectively and demodulation process submodule 734 connects, despreading processes submodule 733 and is used for determining that the spread spectrum code that submodule 732 determines carries out despreading process to transmission data according to spread spectrum code, the data block after being modulated；Demodulation process submodule 734, the data block after despreading is processed the modulation that submodule 733 obtains is demodulated processing, obtains business datum.
In sum, the embodiment of the present invention can consider quantity and the channel quality of UE, so that it is determined that corresponding spread spectrum information, it is ensured that the number of users effective compromise with transmission data block reliability.
Secondly, in the embodiment of the present invention, MCS is passed through in base station, HARQ controls bit and NewdataIndicaror and Redundancyversion and call number and the spread spectrum code sequence number of spreading factor is constituted spread spectrum information, and is transferred to MTCUE, it is possible to reduce the waste of resource.
Embodiment five
With reference to Fig. 9, give the user device architecture figure that the embodiment of the present invention five provides.
Accordingly, the embodiment of the present invention additionally provides the subscriber equipment in a kind of machine type communication, including processing module 92 and sending module 93.
Wherein processing module 92, for being modulated business datum and spread processing according to spread spectrum information, obtain transmitting data；Sending module 93 is connected with processing module 92, and sending module 93 is sent to base station for transmission data processing module 92 obtained.
In the present embodiment, this transmitting device can be configured at UE side.
In sum, the spread spectrum information that the embodiment of the present invention sends based on base station, business datum is modulated and spread processing, thus obtains transmitting Data Concurrent and give base station.Such that it is able to access more user by code division multiplexing, such that it is able to meet MTC service to access the characteristic that user is more, and it is possible to improved the reliability of data transmission by spreading gain, thus ensure to access the performance of user.
With reference to Figure 10, give the optional structure chart of the subscriber equipment that the embodiment of the present invention four provides.
This subscriber equipment also includes receiver module 91.Wherein receiver module 91 is connected with processing module 92, and receiver module 91 is for receiving the spread spectrum information that base station sends.Then processing module 92, are modulated and spread processing business datum for the spread spectrum information received according to receiver module 91, obtain transmitting data.
Optionally, processing module 92, including constituting submodule 921, modulation submodule 922 and spread spectrum submodule 923.Constitute submodule 921, be used for the spread spectrum information according to receiver module 91 reception and business datum is constituted at least one data block；Modulation submodule 922 is connected with composition submodule 921 and spread spectrum submodule 923 respectively, and modulation submodule 922 for being modulated the data block processed after being modulated to the data block constituting submodule 921 composition；Spread spectrum submodule 923, the data block after the spread spectrum information for receiving according to receiver module 91 exchanges the modulation that system module 922 obtains carries out spread processing, obtains transmitting data.
Optionally, constitute submodule 921, determine transport block size specifically for the spread spectrum information received according to receiver module 91；Obtain the total amount of data of business datum, and total amount of data is compared with transport block size；When total amount of data is less than or equal to transport block size, business datum is constituted a data block；When total amount of data more than transport block size time, on the basis of transport block size to and data split, business datum is constituted n data block, wherein, n is positive integer.
Optionally, spread spectrum submodule 923, specifically for searching the spreading factor that in the spread spectrum information that receiver module 91 receives, call number is corresponding, wherein from spreading factor table, spreading factor in spreading factor table, transport block size and call number have relation one to one；According to the spread spectrum code sequence number in the spread spectrum information that receiver module 91 receives and spreading factor, determine the spread spectrum code of correspondence；Data block after exchanging, according to spread spectrum code, the modulation that system module 922 obtains carries out spread processing, obtains transmitting data.
In sum, business datum can be split by the embodiment of the present invention according to transport block size, facilitates the transmission of business datum.And determine spread spectrum code according to spreading factor, quickly business datum is spread, such that it is able to access more user, and improved the reliability of data transmission by spreading gain.
Secondly, the present invention utilizes the method for spread spectrum, and different users accesses parallel according to orthogonal spread spectrum code, it is ensured that the access problem of MTC service mass users, removes cataloged procedure simultaneously, simplifies handling process.
Embodiment six
Accordingly, the embodiment of the present invention additionally provides the transmission system of business datum in a kind of machine type communication, and this system includes the base station provided such as above-described embodiment four, and the subscriber equipment that above-described embodiment five provides, it is referred to the relevant record of above-described embodiment in detail, does not repeats them here.And the base station of the present embodiment and subscriber equipment specifically can use the transmission of business datum of above-mentioned Fig. 1-embodiment illustrated in fig. 6 to realize the transmission of business datum, referring in detail to the relevant record of above-described embodiment, here is omitted.
For device embodiment, due to itself and embodiment of the method basic simlarity, so describe is fairly simple, relevant part sees the part of embodiment of the method and illustrates.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, and between each embodiment, identical similar part sees mutually.
The present invention can be described in the general context of computer executable instructions, such as program module.Usually, program module includes performing particular task or realizing the routine of particular abstract data type, program, object, assembly, data structure etc..The present invention can also be put into practice in a distributed computing environment, in these distributed computing environment, the remote processing devices connected by communication network perform task.In a distributed computing environment, during program module may be located at the local and remote computer-readable storage medium including storage device.
Finally, it can further be stated that, in this article, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation or sequentially that there is any this reality between these entities or operation.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include that the process of a series of key element, method, commodity or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, commodity or equipment.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, commodity or equipment.
Above to the transmission method of business datum in machine type communication provided by the present invention, the biography system of business datum in a kind of machine type communication, a kind of base station, and one subscriber equipment, it is described in detail, principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, the most all will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (13)
1. the transmission method of business datum in a machine type communication, it is characterised in that including:
Determining spread spectrum information, wherein, described spread spectrum information is the relevant information spreading business datum；
Described spread spectrum information is sent to subscriber equipment；
Receiving the transmission data that subscriber equipment sends, wherein, described transmission data are subscriber equipmenies according to spread spectrum information to be modulated business datum and spread processing obtains；
According to described spread spectrum information, described transmission data are carried out despread and demodulated process, obtain described business datum；
Wherein, the described step determining spread spectrum information includes:
Determine the quantity of the subscriber equipment being currently accessed, and receive the channel quality of described each user equipment to report；
Quantity according to described subscriber equipment and described channel quality, determine spreading factor；
Determine call number and the spread spectrum code sequence number of spreading factor correspondence transport block size according to described spreading factor, constitute spread spectrum information.
Method the most according to claim 1, it is characterised in that according to quantity and the described channel quality of described subscriber equipment, determine spreading factor, including:
The type of spreading factor is determined according to current channel quality；
Quantity according to described subscriber equipment determines the spreading factor of correspondence from each type.
Method the most according to claim 1, it is characterised in that determine call number and the spread spectrum code sequence number of correspondence according to described spreading factor, constitute spread spectrum information, including:
Searching the call number that described spreading factor is corresponding, wherein, spreading factor in described spreading factor table from spreading factor table, transport block size and call number have relation one to one；
Determine and described spreading factor spreads the spread spectrum code sequence number that code is corresponding；
Described call number and spread spectrum code sequence number are constituted spread spectrum information.
Method the most according to claim 3, it is characterised in that described transmission data are carried out despread and demodulated process, obtains business datum, including:
Spreading factor is determined according to the call number in described spread spectrum information；
According to the spread spectrum code sequence number in described spread spectrum information and described spreading factor, determine the spread spectrum code of correspondence；
According to described spread spectrum code, described transmission data are carried out despreading process, the data block after being modulated；
It is demodulated the data block after described modulation processing, obtains business datum.
5. the transmission method of business datum in a machine type communication, it is characterised in that including:
Receive the spread spectrum information that base station sends, wherein, described spread spectrum information is the relevant information spreading business datum, described spread spectrum information is base station determines spreading factor according to the channel quality that quantity and each subscriber equipment of the subscriber equipment being currently accessed are reported, and constituted based on call number corresponding to spreading factor and spread spectrum code sequence number；
According to described spread spectrum information, business datum is modulated and spread processing, obtains transmitting data；
Send described transmission data to base station, according to described spread spectrum information, described transmission data are carried out despread and demodulated process for described base station, obtain described business datum；
Wherein, described according to described spread spectrum information, business datum is modulated and spread processing, obtains transmitting data, including:
According to described spread spectrum information, business datum constituted at least one data block；
Described data block is modulated the data block processed after being modulated；
According to described spread spectrum information, the data block after described modulation is carried out spread processing, obtain transmitting data, including: from spreading factor table, search the spreading factor that in described spread spectrum information, call number is corresponding, wherein, spreading factor in described spreading factor table, transport block size and call number have relation one to one；According to the spread spectrum code sequence number in described spread spectrum information and described spreading factor, determine the spread spectrum code of correspondence；According to described spread spectrum code, the data block after described modulation is carried out spread processing, obtain transmitting data.
Method the most according to claim 5, it is characterised in that business datum is constituted at least one data block according to described spread spectrum information, including:
Transport block size is determined according to described spread spectrum information；
Obtain the total amount of data of described business datum, and described total amount of data is compared with described transport block size；
When described total amount of data is less than or equal to described transport block size, described business datum is constituted a data block；
When described total amount of data is more than described transport block size, splitting described business datum on the basis of described transport block size, described business datum is constituted n data block, wherein, n is positive integer.
7. a base station, it is characterised in that including:
Determining module, be used for determining spread spectrum information, wherein, described spread spectrum information is the relevant information spreading business datum；
Sending module, for being sent to subscriber equipment by spread spectrum information；
Receiver module, for receiving the transmission data that described subscriber equipment sends, wherein, described transmission data are subscriber equipmenies according to described spread spectrum information to be modulated business datum and spread processing obtains；
Processing module, for described transmission data are carried out despread and demodulated process, obtains described business datum；
Wherein, described determine module, including:
Receive submodule, for determining the quantity of the subscriber equipment being currently accessed, and receive the channel quality data of described each user equipment to report；Spreading factor determines submodule, for the quantity according to described subscriber equipment and described channel quality data, determines spreading factor；Spread spectrum information constitutes submodule, for determining call number and the spread spectrum code sequence number of spreading factor correspondence transport block size according to described spreading factor, constitutes spread spectrum information.
Base station the most according to claim 7, it is characterised in that:
Described spread spectrum information determines submodule, specifically for determining the type of spreading factor according to current channel quality；Quantity according to described subscriber equipment determines the spreading factor of correspondence from each type.
Base station the most according to claim 7, it is characterised in that:
Described spread spectrum information constitutes submodule, and specifically for searching the call number that described spreading factor is corresponding from spreading factor table, wherein, spreading factor in described spreading factor table, transport block size and call number have relation one to one；Determine and described spreading factor spreads the spread spectrum code sequence number that code is corresponding；Described call number and described spread spectrum code sequence number are constituted spread spectrum information.
Base station the most according to claim 9, it is characterised in that described processing module, including:
Spreading factor determines submodule, for determining spreading factor according to the call number in described spread spectrum information；
Spread spectrum code determines submodule, and the spread spectrum code sequence number according to spread spectrum information and described spreading factor determine the spread spectrum code of correspondence；
Despreading processes submodule, for described transmission data being carried out despreading process according to described spread spectrum code, and the data block after being modulated；
Demodulation process submodule, for the data block after described modulation is demodulated process, obtains business datum.
11. 1 kinds of subscriber equipmenies, it is characterised in that including:
Receiver module, for receiving the spread spectrum information that base station sends, wherein, described spread spectrum information is the relevant information spreading business datum, described spread spectrum information is base station determines spreading factor according to the channel quality that quantity and each subscriber equipment of the subscriber equipment being currently accessed are reported, and constituted based on call number corresponding to spreading factor and spread spectrum code sequence number；
Processing module, for being modulated business datum and spread processing according to described spread spectrum information, obtains transmitting data；
Described transmission data, for sending described transmission data to base station, are carried out despread and demodulated process for described base station according to described spread spectrum information, obtain described business datum by sending module；
Wherein, described processing module, including:
Constitute submodule, for business datum being constituted at least one data block according to described spread spectrum information；
Modulation submodule, for being modulated the data block processed after being modulated to described data block；
Spread spectrum submodule, specifically for searching the spreading factor that in described spread spectrum information, call number is corresponding from spreading factor table, wherein, spreading factor in described spreading factor table, transport block size and call number have relation one to one；According to the spread spectrum code sequence number in described spread spectrum information and described spreading factor, determine the spread spectrum code of correspondence；According to described spread spectrum code, the data block after described modulation is carried out spread processing, obtain transmitting data.
12. subscriber equipmenies according to claim 11, it is characterised in that；
Described composition submodule, specifically for determining transport block size according to described spread spectrum information；Obtain the total amount of data of described business datum, and described total amount of data is compared with described transport block size；When described total amount of data is less than or equal to described transport block size, described business datum is constituted a data block；When described total amount of data is more than described transport block size, splitting described business datum on the basis of described transmitted data amount, described business datum is constituted n data block, wherein, n is positive integer.
The transmission system of business datum in 13. 1 kinds of machine type communications, it is characterised in that include the as above arbitrary described base station of claim 7-10 and the as above arbitrary described subscriber equipment of claim 11-12.
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| CN106385712B (en) * | 2015-07-27 | 2021-07-23 | 中兴通讯股份有限公司 | Data transmission method and system |
| WO2020014843A1 (en) * | 2018-07-16 | 2020-01-23 | 株式会社Ntt都科摩 | Communication method and corresponding user terminal, and base station |
| CN111901084A (en) * | 2020-01-17 | 2020-11-06 | 中兴通讯股份有限公司 | Configuration and data processing method, device, equipment and storage medium |
| CN112383324B (en) * | 2020-11-09 | 2021-07-06 | 上海德寰通信技术有限公司 | Satellite communication method, device, equipment and storage medium |
| CN114095056B (en) * | 2021-11-04 | 2023-07-11 | 深圳供电局有限公司 | Data transmission method, device, equipment and storage medium |
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