CN103227819A - Business data transmission method and system, base station and UE in MTC - Google Patents
Business data transmission method and system, base station and UE in MTC Download PDFInfo
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- CN103227819A CN103227819A CN2013101050573A CN201310105057A CN103227819A CN 103227819 A CN103227819 A CN 103227819A CN 2013101050573 A CN2013101050573 A CN 2013101050573A CN 201310105057 A CN201310105057 A CN 201310105057A CN 103227819 A CN103227819 A CN 103227819A
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Abstract
The invention provides a business data transmission method and system, a base station and UE (user equipment) in MTC (machine-type communication), and aims to solve the problem that user access quantity in the MTC is limited. The transmission method comprises the following steps: receiving transmitted data sent by UE, wherein modulation and spread spectrum processing are performed on the business data by UE according to the spread spectrum information, so as to obtain the transmitted data; and performing dispreading and demodulation processing on the transmitted data by the spread spectrum information, so as to obtain the business data. According to the technical scheme, modulation and spread spectrum processing can be performed on the business data by UE according to the spread spectrum information, so as to obtain the transmitted data, as a result, more users can be accessed through code division multiplexing, the characteristic of more access users of the MTC business is achieved, and furthermore, the data transmission reliability can be improved through spread spectrum gain, so as to ensure performance of access users.
Description
Technical field
The present invention relates to the communication technology, particularly relate to the transmission method of business datum in the communication of machine class, the biography system of business datum in the communication of machine class, base station, and subscriber equipment (User Equipment; UE).
Background technology
Internet of Things is the important component part of generation information technology, be one based on information-bearing bodies such as the Internet, conventional telecommunications nets, allow all be realized the network interconnect by the General Physics object of independent addressing.In the wireless communication system of fast development, next generation mobile communication system as main flow, Long Term Evolution (Long Term Evolution, LTE) system is from 3GPP(The3rd Generation Partnership Project) R10 just begins technology of Internet of things is done support.
(Machine to Machine, M2M), it comes from the machine communication of industrial quarters, becomes the widely used vocabulary in the communications field in recent years to machine to also have a notion-machine that is closely related with Internet of Things.The object that M2M connects mainly is an intelligent apparatus, and the communication network of use mainly is conventional telecommunications nets such as cellular mobile network, can realize being connected of distal extension nets such as telecommunications network and sensor network by the M2M gateway.M2M in the 3GPP standard, be called as machine class communication (Machine-Type Communication, MTC).
The characteristics of MTC are that communication equipment is many, data traffic is little, real-time requires low and low-power consumption.For the MTC business of small data quantity, the general coding of the low code check of employing of selecting is handled.But, the processing mode of this MTC transfer of data, can make usually the number of users that can insert be MTC subscriber equipment (User Equipment, UE) fewer, cause user's access quantity to be restricted.
Summary of the invention
The embodiment of the invention provides the transmission method of business datum in the communication of machine class, the problem that is restricted with the access quantity that solves user in the communication of machine class.
Accordingly, the embodiment of the invention also provides the base station, subscriber equipment, and the transmission system of business datum in the machine class communication.
In order to address the above problem, the embodiment of the invention discloses the transmission method of business datum in a kind of machine class communication, comprising:
Receive the transmission data that subscriber equipment sends, wherein, described transmission data are that subscriber equipment is modulated with spread processing business datum according to spread spectrum information and obtained;
According to described spread spectrum information described transmission data are carried out despreading and demodulation process, obtain described business datum.
Accordingly, the embodiment of the invention also discloses the transmission method of business datum in a kind of machine class communication, comprising:
According to described spread spectrum information business datum is modulated and spread processing, obtain transmitting data;
Send described transmission data to the base station, according to described spread spectrum information described transmission data are carried out despreading and demodulation process, obtain described business datum for described base station.
Accordingly, the embodiment of the invention also discloses a kind of base station, comprising:
Receiver module is used to receive the transmission data that described subscriber equipment sends, and wherein, described transmission data are that subscriber equipment is modulated with spread processing business datum according to described spread spectrum information and obtained;
Processing module is used for described transmission data are carried out despreading and demodulation process, obtains described business datum.
Accordingly, the embodiment of the invention also discloses a kind of subscriber equipment, comprising:
Processing module is used for according to described spread spectrum information business datum being modulated and spread processing, obtains transmitting data;
Sending module is used for sending described transmission data to the base station, according to described spread spectrum information described transmission data is carried out despreading and demodulation process for described base station, obtains described business datum.
Accordingly, the embodiment of the invention also discloses the transmission system of business datum in a kind of machine class communication, comprise above-mentioned base station and above-mentioned subscriber equipment.
Compared with prior art, the present invention includes following advantage:
In the embodiment of the invention, by adopting technique scheme, UE can modulate with spread processing business datum according to this spread spectrum information and constitute the transmission data, thereby can insert more user by code division multiplexing, satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.The base station can receive the transmission data that UE sends then, and according to this spread spectrum information the transmission data is carried out despreading and demodulation process, obtains business datum.
Description of drawings
Fig. 1 is the transmission method flow chart of business datum among the MTC that provides of the embodiment of the invention one;
Fig. 2 is the optional flow chart of transmission method of business datum among the MTC that provides of the embodiment of the invention one;
Fig. 3 is the transmission method flow chart of business datum among the MTC that provides of the embodiment of the invention two;
Fig. 4 is the optional flow chart of transmission method of business datum among the MTC that provides of the embodiment of the invention two;
Fig. 5 modulates method flow diagram with spread processing to business datum among the MTC that provides of the embodiment of the invention two;
Fig. 6 is the transmission method flow chart of business datum among the MTC that provides of the embodiment of the invention three;
Fig. 7 is the architecture of base station figure that the embodiment of the invention four provides;
Fig. 8 is the optional structure chart of the base station that provides of the embodiment of the invention four;
Fig. 9 is the user device architecture figure that the embodiment of the invention five provides;
Figure 10 is the optional structure chart of the subscriber equipment that provides of the embodiment of the invention five.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The embodiment of the invention provides the transmission method of business datum among a kind of MTC, does not adopt the code processing method of low code check, and is based on the spread spectrum information that the base station sends, and business datum is modulated and spread processing, thereby obtain transmitting data and send to the base station.Can insert more user by code division multiplexing on the one hand in the embodiment of the invention, thereby can satisfy the more characteristic of MTC service access user, on the other hand, can improve reliability of data transmission, thereby guarantee to insert user's performance by spreading gain.
Embodiment one
When in MTC, carrying out the transmission of business datum, need base station and UE intercommunication to finish, provide the operating process of base station side below.
With reference to Fig. 1, provided the transmission method flow chart of business datum among the MTC that the embodiment of the invention one provides.
UE can modulate with spread processing business datum according to spread spectrum information and obtain transmitting data in the embodiment of the invention, will transmit data then and send to the base station.Therefore the base station can receive the transmission data that UE sends.
Wherein, spread spectrum information is the relevant information that is used for business datum is carried out spread spectrum, despreading processing.Specifically referring to hereinafter discussing.
Because the transmission data are that subscriber equipment is modulated with spread processing business datum according to spread spectrum information and obtained, so the base station can transmit data to this and carry out despreading and demodulation process, obtains the corresponding service data.
In sum, the base station can receive the transmission data that UE sends in the embodiment of the invention, these transmission data are that UE modulates and spread processing business datum according to spread spectrum information, thereby can insert more user by code division multiplexing, satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.Thereby after the transmission data that receive the UE transmission, can carry out despreading and demodulation process to the transmission data, obtain business datum according to this spread spectrum information.
In the actual treatment, spread spectrum information can be reserved in advance in advance, is stored in base station and UE side respectively, also can determine to send to UE by the base station, and the application does not limit this.Determine that with the base station spread spectrum information is an example below, the concrete argumentation:
With reference to Fig. 2, provided the transmission method optional flow chart of business datum among the MTC that the embodiment of the invention one provides.
Spread spectrum information at first will be determined according to information such as the quantity of the UE that inserts and channel quality status in the base station, then this spread spectrum information is sent to UE.
Optionally, determine spread spectrum information, comprising: determine the quantity of the UE of current access, and receive the channel quality data that each UE reports; According to quantity and the channel quality of UE, determine spreading factor; Determine corresponding call number and spread spectrum code sequence number to constitute spread spectrum information according to spreading factor.
In the embodiment of the invention, after the success of UE access network, before the professional initiation of MTC, determine the quantity of UE in the network, and receive the channel quality that each UE reports.Wherein, channel quality can indicate that (Channel Quality Indicator, CQI) size etc. is described by quality of wireless channel.Can determine spreading factor according to quantity and the channel quality of UE then.
Wherein, spreading factor is the ratio of the signal bandwidth before signal and the band spectrum modulation after the band spectrum modulation; The transmitted data amount of data block is at a Physical Resource Block (Physical Resource Block, PRB) middle actual transmissions data block size.
In the embodiment of the invention, it is certain wanting transport block size behind the spread spectrum, therefore, during the configuration spreading factor, the product of spreading factor and UE actual transmissions data block size will equal data block size behind the spread spectrum, therefore be that spreading factor and transport block size have incidence relation, can set up index according to this incidence relation, thus by wherein one can determine another.And, when setting up index, can also identify call number, can find the corresponding spreading factor and the transmitted data amount of data block by this call number, so the base station only needs this call number of feedback to get final product when feedback.
Therefore, this index can be stored in the spreading factor table, therefore, call number, spreading factor and transport block size have one-to-one relationship in this spreading factor table, i.e. a kind of spreading factor of the unique correspondence of call number and transport block size, thus can find corresponding spreading factor and transport block size by call number.
For example, when the MTC uplink, be that unit carries out transfer of data with a PRB usually.In a PRB, remove 1 symbol that pilot tone is occupied, also have 6 symbols to use for the UE of MTC, (Resource Element RE) has 72 to utilizable like this resource grains subnumber.Further, for the accuracy of convenience in handling and transmission, also will consider the orthogonality in the spread spectrum, therefore can only adopt 64 resource particle wherein, remaining 8 resource particle are filled to " 0 " or other related datas.
Because the characteristic of MTC business, business datum is generally smaller, even just transmits several bit in a PRB, therefore based on above-mentioned processing method, can set up the 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 only is a kind of form of expression of spreading factor table, and should not be construed as is restriction to the embodiment of the invention.And, only discussed several situations of spreading factor in the change for example, spreading factor can also wait other data for 32 in the actual treatment, does not enumerate one by one herein, and should not be construed as is restriction to the embodiment of the invention.
Optionally,, determine spreading factor, comprising: the type of determining spreading factor according to current channel quality according to quantity and the channel quality data of UE; Quantity according to UE is determined corresponding spreading factor from every type.
Therefore in the embodiment of the invention,, can divide the spreading factor type according to the size of spreading factor, be 64 or be the first kind that spreading factor is 8 or was second type as spreading factor in the table 1 at 16 o'clock at 4 o'clock because that spreading factor has is multiple.Therefore, can carry out the selection of spreading factor based on following method:
At first carry out the selection of spreading factor type according to channel quality status, here channel quality status under different channel circumstances, wherein, the EPA that channel circumstance can provide according to standard, EVA, the ETU channel is classified, by different threshold values is set.Corresponding threshold is respectively X
EPA, X
EVA, X
ETU, be example with the EPA channel, suppose that corresponding threshold is 5dB, that is: X
EPA=5dB, (the 5dB here is hypothesis just, and concrete threshold value need provide by emulation under typical scene, be configured in base station side then, the CQI measured value that UE reports compares with it, judges the quality of channel situation then), if the CQI of respective channels is greater than threshold X
EPA(that is: CQI〉X
EPA), show that then channel quality is better, select first type; If instead the CQI of respective channels is less than threshold X
EPA(that is: CQI＜=X
EPA), show that channel quality is not fine, select second type spreading factor.
Secondly carry out the selection of spreading factor according to the quantity of the UE that inserts:
If a) quantity of the UE of Jie Ruing is many, in order to guarantee the quantity of UE, can select every type in bigger spreading factor, select 8 such as selecting in the first kind in 64, the second types; B) if the quantity of the UE that inserts is fewer, in order to send some business datums as much as possible, can select every type in less spreading factor, select 4 such as selecting in the first kind in 16, the second types.Here take all factors into consideration the quantity of channel quality status and UE, determine to select which kind of spreading factor, and then definite spread spectrum information, effective compromise of number of users and transmission data block reliability can be guaranteed.
In addition in the embodiment of the invention, the all corresponding corresponding spreading code of each spreading factor, therefore can carry out spread processing according to spreading code is follow-up, can from the spreading code of spreading factor correspondence, choose one group of spreading code wantonly and be transferred to UE, make it follow-uply can carry out spread processing.
Optionally, determine corresponding call number and spread spectrum code sequence number to constitute spread spectrum information according to spreading factor, comprise: the call number of from the spreading factor table, searching the spreading factor correspondence, wherein, spreading factor in the spreading factor table, transport block size and call number have relation one to one; Determine the spread spectrum code sequence number of spreading code correspondence in the spreading factor; With call number and spread spectrum code sequence number formation spread spectrum information.
The embodiment of the invention has been preserved spreading factor in the spreading factor table, the one-to-one relationship of transport block size and call number, data volume when reducing transfer of data, save resource, therefore after determining spreading factor, can determine corresponding call number, thereby follow-uply this call number can be sent to UE according to this spreading factor table.The follow-up spreading factor and the transport block size that can find the call number correspondence equally of UE according to this spreading factor table.
In addition in the embodiment of the invention, can corresponding different spreading codes according to different demand spreading factor, for example, in order to guarantee the orthogonality of spreading code, can adopt walsh sequence (Walsh sign indicating number) to carry out spread processing, be 4 and 8 to be example with the length of spreading code below, size according to data block, if spreading factor is K, then can get following value, be listed below:
When K=4, quadrature Walsh sign indicating number sequence can be as shown in table 2:
| Sequence 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, when K=8, quadrature Walsh sign indicating number sequence can be as shown in table 3:
| Sequence 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
The above-mentioned quadrature Walsh sign indicating number sequence that has provided two kinds of spreading factor correspondences only is used for concrete argumentation herein, and should not be construed as is restriction to the embodiment of the invention.
Therefore, can determine corresponding spread spectrum code sequence number according to spreading factor.In the actual transmissions, for the spreading code of selecting the spreading factor correspondence several different methods is arranged, as can determining spread spectrum code sequence number according to the sequencing of UE access network, distributing spread spectrum code sequence as the UE of the 1st access number is that to distribute spread spectrum code sequence number be 2 for the UE of 1, the 2 access; It number is 1 that the UE of and for example preceding 100 accesses distributes spread spectrum code sequence, and it number is 2 etc. that the UE of preceding 101～200 accesses distributes spread spectrum code sequence, and the embodiment of the invention is not done qualification to this, can decide according to actual conditions.
After determining call number and spread spectrum code sequence number by said method, UE carries out processing such as spread spectrum for convenience, and improve the utilance of resource, the base station can be with the call number of determining according to spreading factor, and the spread spectrum code sequence of determining according to spreading factor number constitutes spread spectrum information.
The sequence number that promptly only needs to send call number and spreading code gets final product, as known from Table 1, the feedback call number only needs 2bit to get final product, and the longest spreading code is 64, thereby need 6bit to show spread spectrum code sequence number at most, thereby the size (being call number) of spreading factor and the sequence number of spreading code can be indicated by the feedback of 8 bits in the base station.Because the MTC business is not generally mixed automatic repeat requests (Hybrid Automatic Repeat Request, HARQ) handling process, can utilize Physical HARQ Indicator Channel (Physical HARQ indicator channel, PHICH) 2bit comes the ropeway carrying-rope quotation marks, in addition, in embodiments of the present invention, owing to do not use chnnel coding, so among the 5bit of MCS, only need 2bit to represent modulation system, remaining 3bit can feed back spread spectrum information here to be used, and new data indicatorke can contribute 1bit in addition, redundancy version can contribute 2bit, in a word; Can utilize the 6bit that provides to feed back base station assigns here to the spread spectrum code sequence of UE number.
Step 202 receives the transmission data that UE sends.
Can receive the transmission data that UE sends then, wherein, the transmission data are that subscriber equipment is modulated with spread processing business datum according to spread spectrum information and obtained.
Step 203 is carried out despreading and demodulation process to the transmission data, obtains business datum.
Can carry out despreading and demodulation process to the transmission data then, obtain the corresponding service data.
Optionally, the transmission data are carried out despreading and demodulation process, obtain business datum, comprising: determine spreading factor according to the call number in the spread spectrum information; According to spread spectrum code sequence in the spread spectrum information number and spreading factor, determine corresponding spreading code; According to spreading code the transmission data are carried out despreading and handle the data block after obtaining modulating; Data block after the modulation is carried out demodulation process, obtain business datum.
At first can from the spread spectrum information of distributing to UE, obtain call number, search the spreading factor that uses when thereby the spreading factor table is determined spread spectrum according to this call number then, from spread spectrum information, obtain spread spectrum code sequence number again, thereby according to spreading factor and this spread spectrum code sequence number definite spreading code that uses, can carry out despreading to the transmission data according to this spreading factor and corresponding spreading code then handles, data block after obtaining modulating, in that the data block after the modulation is carried out demodulation process, obtain business datum.
Wherein, if the UE side is behind spread spectrum, data behind the spread spectrum are carried out inverse fast Fourier transform (Inverse Fast Fourier Transform, IFFT), base station side also can be carried out fast Fourier transform (Fast Fourier Transform to the transmission data earlier, FFT), carry out despreading, demodulation etc. again and handle operation.
In sum, the base station can pre-determine spread spectrum information and send to UE in the embodiment of the invention, thereby UE can modulate and spread processing business datum according to this spread spectrum information, thereby can insert more user by code division multiplexing, satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.Thereby after the transmission data that receive the UE transmission, can carry out despreading and demodulation process to the transmission data, obtain business datum according to this spread spectrum information.
Secondly, the embodiment of the invention can be taken all factors into consideration quantity and the channel quality of UE, thereby determines corresponding spread spectrum information, can guarantee effective compromise of number of users and transmission data block reliability.
Once more, MCS is passed through in the base station in the embodiment of the invention, HARQ control bit and New data Indicaror and Redundancy version number constitute spread spectrum information with the call number of spreading factor and spread spectrum code sequence, and are transferred to MTC UE, can reduce the waste of resource.
Embodiment two
When in MTC, carrying out the transmission of business datum, need base station and UE intercommunication to finish, provide the operating process of UE side below.
With reference to Fig. 3, provided the transmission method flow chart of business datum among the MTC that the embodiment of the invention two provides.
Step 301 is modulated and spread processing business datum according to spread spectrum information, obtains transmitting data.
UE can modulate and spread processing business datum according to this spread spectrum information, concrete, UE can modulate user data, as carries out the constellation modulation, determine spreading code according to spreading factor then, and the business datum after modulating is carried out spread processing according to this spreading code.Obtain transmitting data.Wherein, this spread spectrum information can appoint also to have the base station to send in advance with UE, and the embodiment of the invention does not limit this.
Step 302 sends the transmission data to the base station.
After the transmission data are determined, can send the transmission data to the base station, according to spread spectrum information these transmission data are carried out despreading and demodulation process for the base station, obtain business datum, be that subsequent base stations can spread spectrum information carries out despreading to the transmission data and demodulation process obtains business datum according to changing, thereby realized the transmission of business datum in the communication of machine class.
In sum, UE can modulate and spread processing business datum based on spread spectrum information in the embodiment of the invention, thereby obtains transmitting data and send to the base station.Thereby can insert more user by code division multiplexing, thereby can satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.
Be example to receive base station transmission transmission information below, the concrete argumentation.
With reference to Fig. 4, provided the transmission method optional flow chart of business datum among the MTC that the embodiment of the invention two provides.
Step 401 receives the spread spectrum information that the base station sends.
MTC UE will carry out spread spectrum to user data, at first can receive the spread spectrum information that base station side sends, and wherein, spread spectrum information is the relevant information of business datum being carried out spread spectrum, for example, and data such as spreading factor, spreading code.
Step 402 is modulated and spread processing business datum according to spread spectrum information, obtains transmitting data.
After getting access to spread spectrum information, just can modulate and spread processing business datum according to this spread spectrum information, concrete, UE can modulate user data, as carry out constellation and modulate, determine spreading code according to spreading factor then, and the business datum after modulating is carried out spread processing according to this spreading code.Obtain transmitting data.
Optionally, business datum is modulated and spread processing, obtain transmitting data, comprising: business datum is constituted at least one data block according to spread spectrum information according to spread spectrum information; Data block is carried out data block after modulation treatment obtains modulating; According to spread spectrum information the data block after modulating is carried out spread processing, obtain transmitting data.
Transport block size can be obtained according to spread spectrum information, thereby the business datum of MTC at least one data block can be constituted according to this transport block size.Then each data block is carried out data block after modulation treatment obtains modulating.Obtain spreading factor by spread spectrum information again, thereby the data block after modulating is carried out spread processing, obtain transmitting data according to this spreading factor.
Optionally, business datum is constituted at least one data block, comprising: determine transport block size according to spread spectrum information according to spread spectrum information; Obtain the total amount of data of business datum, and total amount of data and transport block size are compared; 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 during greater than transport block size, be that benchmark is cut apart business datum with the transmitted data amount, business datum is constituted n data block, wherein, n is a positive integer.
Optionally, according to spread spectrum information the data block after modulating is carried out spread processing, obtain transmitting data, comprise: the spreading factor of from the spreading factor table, searching call number correspondence in the spread spectrum information, wherein, spreading factor in the spreading factor table, transport block size and call number have relation one to one; According to spread spectrum code sequence in the spread spectrum information number and spreading factor, determine corresponding spreading code; According to spreading code the data block after modulating is carried out spread processing, obtain transmitting data.
Based on the argumentation of foregoing, below discuss in detail the modulation and the spread processing flow process of business datum, specifically comprise following operating procedure:
With reference to Fig. 5, provided among the MTC that the embodiment of the invention two provides business datum has been modulated method flow diagram with spread processing.
Step 501 is determined transport block size according to spread spectrum information.
In the embodiment of the invention, with business datum composition data piece the time, at first can determine transport block size by spread spectrum information, concrete, comprise call number in the spread spectrum information, therefore can search the spreading factor table, thereby obtain transport block size according to this call number.
Step 502 is obtained the total amount of data of business datum, whether detects this total amount of data greater than transport block size.
Can obtain the business datum of this less important transmission then, and the total amount of data of definite business datum.Whether detect this total amount of data then greater than transport block size.
If promptly total amount of data is greater than transport block size, then follow-up execution in step 304; If not, promptly total amount of data is less than or equal to transport block size, then follow-up execution in step 303.
Step 503 constitutes a data block with business datum.
When total amount of data during less than transport block size, but the business datum that explanation will be transmitted is littler than transmitted data amount in the actual transmissions, therefore business datum will be constituted a data block, and the part that not enough part is not promptly filled business datum in the data block can be filled with 0.
When size of data that total amount of data equals to transmit, the size of data that can transmit in the business datum that explanation will be transmitted and the actual transmissions is identical, therefore can business datum constitute a data block equally.
Step 504 is that benchmark is cut apart business datum with the transport block size, and business datum is constituted n data block.
When total amount of data during greater than transport block size, but the business datum that explanation will be transmitted is bigger than data block transmitted in the actual transmissions, promptly a data block can't be carried all business datums, therefore, this business datum can be constituted several data blocks transmits, concrete, can be that benchmark is cut apart business datum with the transport block size, when promptly business datum being cut apart, when reaching this data block big or small, just business datum is divided to go out a data block, the follow-up continuation cut apart, finally business datum can be constituted n data block, wherein, n is a positive integer.Wherein, if last data block is not filled up, then can fill with 0.
Step 505 is carried out data block after modulation treatment obtains modulating to data block.
Can modulate the data block of cutting apart then, thereby as adopting the data block after constellation adjustment system obtains modulating.
Step 506 is searched the spreading factor of call number correspondence in the spread spectrum information from the spreading factor table.
MTC UE can search the spreading factor of call number correspondence in the spread spectrum information by the spreading factor table.
Step 507 according to spread spectrum code sequence in the spreading factor spread spectrum information number and spreading factor, is determined corresponding spreading code.
Also comprise spread spectrum code sequence number in the spread spectrum information, can determine the spreading code of this frequency expansion sequence correspondence according to spread spectrum information.
Step 508 is carried out spread processing according to this spreading code to the data block after modulating, and obtains transmitting data.
In addition, business datum is modulated with spread spectrum after, can also to the data behind the spread spectrum carry out inverse fast Fourier transform (Inverse Fast Fourier Transform, IFFT), carry out the resource mapping then to the time-frequency space and handle, thereby obtain transmitting data.
Step 403 sends the transmission data to the base station.
In sum, the embodiment of the invention is modulated and spread processing business datum, thereby is obtained transmitting data and send to the base station based on the spread spectrum information that the base station sends.Thereby can insert more user by code division multiplexing, thereby can satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.
Secondly, the embodiment of the invention can be cut apart business datum according to transport block size, makes things convenient for the transmission of business datum.And determine spreading code according to spreading factor, fast business datum is carried out spread spectrum, thereby can insert more user, and improve reliability of data transmission by spreading gain.
Once more, the present invention utilizes the method for spread spectrum, and different users inserts according to the spreading code of quadrature is parallel, can guarantee the access problem of the professional mass users of MTC, removes cataloged procedure simultaneously, has simplified handling process.
Embodiment three
When in MTC, carrying out the transmission of business datum, need base station and UE intercommunication to finish, provide the interaction process flow process of base station and UE below.
With reference to Fig. 6, provided the transmission method flow chart of business datum among the MTC that the embodiment of the invention three provides.
6.1, the base station determines spread spectrum information.
Wherein, determine spread spectrum information, comprising: determine the quantity of the subscriber equipment of current access, and receive the channel quality of each user equipment to report; According to the quantity and the channel quality of subscriber equipment, determine spreading factor; Determine corresponding call number and spread spectrum code sequence number to constitute spread spectrum information according to spreading factor.
6.2, the base station sends spread spectrum information to UE.
6.3, the UE spread spectrum information modulates and spread processing business datum, obtains transmitting data.
Wherein, business datum is modulated and spread processing, obtain transmitting data, comprising: business datum is constituted at least one data block according to spread spectrum information according to spread spectrum information; Data block is carried out data block after modulation treatment obtains modulating; According to spread spectrum information the data block after modulating is carried out spread processing, obtain transmitting data.
Concrete, according to spread spectrum information business datum is constituted at least one data block, comprising: determine transport block size according to spread spectrum information; Obtain the total amount of data of business datum, and total amount of data and transport block size are compared; 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 during greater than transport block size, be that benchmark is cut apart business datum with the transport block size, business datum is constituted n data block, wherein, n is a positive integer.
Concrete, according to spread spectrum information the data block after modulating is carried out spread processing, obtain transmitting data, comprise: the spreading factor of from the spreading factor table, searching call number correspondence in the spread spectrum information, wherein, spreading factor in the spreading factor table, transport block size and call number have relation one to one; According to spread spectrum code sequence in the spread spectrum information number and spreading factor, determine corresponding spreading code; According to spreading code the data block after modulating is carried out spread processing, obtain transmitting data.
6.4, UE will transmit data and send to the base station.
6.5, the base station to the transmission data carry out despreading and demodulation process, obtain business datum.
Wherein, the transmission data are carried out despreading and demodulation process, obtain business datum, comprising: determine spreading factor according to the call number in the spread spectrum information; According to spread spectrum code sequence in the spread spectrum information number and spreading factor, determine corresponding spreading code; According to spreading code the transmission data are carried out despreading and handle the data block after obtaining modulating; Data block after the modulation is carried out demodulation process, obtain business datum.
In sum, the base station can pre-determine spread spectrum information and send to UE in the embodiment of the invention embodiment of the invention, thereby UE can modulate and spread processing business datum according to this spread spectrum information, thereby obtain transmitting data and send to the base station, the base station is carried out processing such as despreading, demodulation again and is obtained transmitting data.Thereby can insert more user by code division multiplexing, can satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.
Embodiment four
With reference to Fig. 7, provided the architecture of base station figure that the embodiment of the invention four provides.
Accordingly, the embodiment of the invention also provides a kind of base station, comprises receiver module 72 and processing module 73.
Wherein receiver module 72 is used to receive the transmission data that subscriber equipment sends, and wherein, the transmission data are that subscriber equipment is modulated with spread processing business datum according to spread spectrum information and obtained;
This transmitting device can be disposed at base station side in the present embodiment.
In sum, the base station can pre-determine spread spectrum information and send to UE in the embodiment of the invention, thereby UE can modulate and spread processing business datum according to this spread spectrum information, thereby can insert more user by code division multiplexing, satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.Thereby after the transmission data that receive the UE transmission, can carry out despreading and demodulation process to the transmission data, obtain business datum according to this spread spectrum information.
With reference to Fig. 8, provided the optional structure chart of the base station that the embodiment of the invention four provides.
This base station also comprises determination module 70 and sending module 71.
Determination module 70 is used for determining spread spectrum information; Sending module 71 is connected with receiver module 72 with determination module 70 respectively, and sending module 71 is used for the spread spectrum information that determination module 70 is determined is sent to subscriber equipment; Then the transmission data that receive of receiver module 72 spread spectrum information that to be subscriber equipmenies send according to the sending module 71 of base station is modulated with spread processing business datum and is obtained.
Optionally, determination module 70, comprise receive submodule 701, spreading factor determines that submodule 702 and spread spectrum information constitute submodule 703.
Wherein receive submodule 701, be used for the quantity of the subscriber equipment of definite current access, and receive the channel quality of each user equipment to report; Spreading factor determines that submodule 702 constitutes submodule 703 with reception submodule 701 and spread spectrum information respectively and is connected, spreading factor determines that submodule 702 is used for determining spreading factor according to the quantity that receives the subscriber equipment that submodule 701 determines and the channel quality of reception; Spread spectrum information constitutes submodule 703, is used for determining that according to spreading factor spreading factors that submodule 702 is determined determine corresponding call number and spread spectrum code sequence number to constitute spread spectrum information.
Optionally, spread spectrum information is determined submodule 702, specifically is used for determining according to current channel quality the type of spreading factor; Quantity according to subscriber equipment is determined corresponding spreading factor from every type.
Optionally, spread spectrum information constitutes submodule 703, specifically is used for searching from the spreading factor table call number of spreading factor correspondence, wherein, spreading factor in the spreading factor table, transport block size and call number have relation one to one; Determine the spread spectrum code sequence number of spreading code correspondence in the spreading factor; With call number and spread spectrum code sequence number formation spread spectrum information.
Optionally, processing module 73 comprises that spreading factor determines that submodule 731 and spreading code determine submodule 732, despreading processing sub 733 and demodulation process submodule 734.
Spreading factor is determined submodule 731, and the call number that is used for the spread spectrum information that receives according to receiver module 72 is determined spreading factor; Spreading code determines that submodule 732 determines that with spreading factor submodule 731 is connected with despreading processing sub 733 respectively, spreading code determines that submodule 732 is used for the spread spectrum code sequence number of the spread spectrum information that receives according to receiver module 72 and spreading factor and determines that submodule 731 determines spreading factors, determines corresponding spreading code; Despreading processing sub 733 is connected with demodulation process submodule 734 with despreading processing sub 733 respectively and is connected, despreading processing sub 733 is used for determining that according to spreading code the spreading code that submodule 732 is determined carries out despreading processing, the data block after obtaining modulating to the transmission data; Demodulation process submodule 734, the data block after the modulation that is used for despreading processing sub 733 is obtained is carried out demodulation process, obtains business datum.
In sum, the embodiment of the invention can be taken all factors into consideration quantity and the channel quality of UE, thereby determines corresponding spread spectrum information, can guarantee effective compromise of number of users and transmission data block reliability.
Secondly, MCS is passed through in the base station in the embodiment of the invention, HARQ control bit and New data Indicaror and Redundancy version number constitute spread spectrum information with the call number of spreading factor and spread spectrum code sequence, and are transferred to MTC UE, can reduce the waste of resource.
Embodiment five
With reference to Fig. 9, provided the user device architecture figure that the embodiment of the invention five provides.
Accordingly, the embodiment of the invention also provides the subscriber equipment in a kind of machine class communication, comprises processing module 92 and sending module 93.
Wherein processing module 92, are used for according to spread spectrum information business datum being modulated and spread processing, obtain transmitting data; Sending module 93 is connected with processing module 92, and the transmission data that sending module 93 is used for processing module 92 is obtained send to the base station.
This transmitting device can be disposed at the UE side in the present embodiment.
In sum, the embodiment of the invention is modulated and spread processing business datum, thereby is obtained transmitting data and send to the base station based on the spread spectrum information that the base station sends.Thereby can insert more user by code division multiplexing, thereby can satisfy the more characteristic of MTC service access user, and, can improve reliability of data transmission by spreading gain, thereby guarantee to insert user's performance.
With reference to Figure 10, provided the optional structure chart of the subscriber equipment that the embodiment of the invention four provides.
This subscriber equipment also comprises receiver module 91.Wherein receiver module 91 is connected with processing module 92, and receiver module 91 is used to receive the spread spectrum information that the base station sends.Then processing module 92, are used for according to the spread spectrum information that receiver module 91 receives business datum being modulated and spread processing, obtain transmitting data.
Optionally, processing module 92 comprises constituting submodule 921, modulation submodule 922 and spread spectrum submodule 923.Constitute submodule 921, be used for business datum being constituted at least one data block according to the spread spectrum information that receiver module 91 receives; Modulation submodule 922 respectively with constitute submodule 921 and be connected with spread spectrum submodule 923, modulation submodule 922 is used for the data block that constitutes submodule 921 formations is carried out data block after modulation treatment obtains modulating; Spread spectrum submodule 923, the data block that is used for after the modulation that the spread spectrum information that receives according to receiver module 91 obtains modulation submodule 922 is carried out spread processing, obtains transmitting data.
Optionally, constitute submodule 921, specifically be used for determining transport block size according to the spread spectrum information that receiver module 91 receives; Obtain the total amount of data of business datum, and total amount of data and transport block size are compared; 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 during greater than transport block size, be benchmark with the transport block size to and data cut apart, business datum is constituted n data block, wherein, n is a positive integer.
Optionally, spread spectrum submodule 923 specifically is used for searching from the spreading factor table spreading factor of call number correspondence the spread spectrum information that receiver module 91 receives, wherein, spreading factor in the spreading factor table, transport block size and call number have relation one to one; Spread spectrum code sequence in the spread spectrum information that receives according to receiver module 91 number and spreading factor are determined corresponding spreading code; Carry out spread processing according to the data block of spreading code after, obtain transmitting data the modulation that obtains of modulation submodule 922.
In sum, the embodiment of the invention can be cut apart business datum according to transport block size, makes things convenient for the transmission of business datum.And determine spreading code according to spreading factor, fast business datum is carried out spread spectrum, thereby can insert more user, and improve reliability of data transmission by spreading gain.
Secondly, the present invention utilizes the method for spread spectrum, and different users inserts according to the spreading code of quadrature is parallel, can guarantee the access problem of the professional mass users of MTC, removes cataloged procedure simultaneously, has simplified handling process.
Embodiment six
Accordingly, the embodiment of the invention also provides the transmission system of business datum in the communication of a kind of machine class, and the base station that provides as above-mentioned embodiment four is provided in this system, and the subscriber equipment that provides of the foregoing description five, can not repeat them here with reference to the relevant record of the foregoing description in detail.And the base station of present embodiment and subscriber equipment specifically can adopt the transmission of the business datum of above-mentioned Fig. 1-embodiment illustrated in fig. 6 to realize the transmission of business datum, with reference to the relevant record of the foregoing description, repeats no more in detail herein.
For device embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
The present invention can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract, program, object, assembly, data structure or the like.Also can in distributed computing environment (DCE), put into practice the present invention, in these distributed computing environment (DCE), by by communication network connected teleprocessing equipment execute the task.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium that comprises memory device.
At last, also need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, commodity or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, commodity or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, commodity or the equipment that comprises described key element and also have other identical element.
More than to the transmission method of business datum in the machine class provided by the present invention communication, the biography system of business datum in a kind of machine class communication, a kind of base station, and a kind of subscriber equipment, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (19)
1. the transmission method of business datum is characterized in that during a machine class was communicated by letter, and comprising:
Receive the transmission data that subscriber equipment sends, wherein, described transmission data are that subscriber equipment is modulated with spread processing business datum according to spread spectrum information and obtained;
According to described spread spectrum information described transmission data are carried out despreading and demodulation process, obtain described business datum.
2. method according to claim 1 is characterized in that, before the transmission data that described reception subscriber equipment sends, described method also comprises:
Determine described spread spectrum information;
Send described spread spectrum information to described subscriber equipment;
Further, described definite spread spectrum information comprises:
Determine the quantity of the subscriber equipment of current access, and receive the channel quality of described each user equipment to report;
According to the quantity and the described channel quality of described subscriber equipment, determine spreading factor;
Determine corresponding call number and spread spectrum code sequence number to constitute spread spectrum information according to described spreading factor.
3. method according to claim 2 is characterized in that, according to the quantity and the described channel quality of described subscriber equipment, determines spreading factor, comprising:
Determine the type of spreading factor according to current channel quality;
Quantity according to described subscriber equipment is determined corresponding spreading factor from every type.
4. method according to claim 2 is characterized in that, determines corresponding call number and spread spectrum code sequence number to constitute spread spectrum information according to described spreading factor, comprising:
From the spreading factor table, search the call number of described spreading factor correspondence, wherein, spreading factor in the described spreading factor table, transport block size and call number have relation one to one;
Determine the spread spectrum code sequence number of spreading code correspondence in the described spreading factor;
With described call number and spread spectrum code sequence number formation spread spectrum information.
5. method according to claim 4 is characterized in that, described transmission data are carried out despreading and demodulation process, obtains business datum, comprising:
Determine spreading factor according to the call number in the described spread spectrum information;
According to spread spectrum code sequence in the described spread spectrum information number and described spreading factor, determine corresponding spreading code;
According to described spreading code described transmission data are carried out despreading and handle the data block after obtaining modulating;
Data block after the described modulation is carried out demodulation process, obtain business datum.
6. the transmission method of business datum is characterized in that during a machine class was communicated by letter, and comprising:
According to described spread spectrum information business datum is modulated and spread processing, obtain transmitting data;
Send described transmission data to the base station, according to described spread spectrum information described transmission data are carried out despreading and demodulation process, obtain described business datum for described base station.
7. method according to claim 6 is characterized in that, according to described spread spectrum information to business datum modulate with spread processing before, described method also comprises:
Receive the described spread spectrum information that described base station sends;
Further, describedly business datum is modulated and spread processing, obtains transmitting data, comprising according to described spread spectrum information:
According to described spread spectrum information business datum is constituted at least one data block;
Described data block is carried out data block after modulation treatment obtains modulating;
Carry out spread processing according to the data block of described spread spectrum information after, obtain transmitting data described modulation.
8. method according to claim 7 is characterized in that, according to described spread spectrum information business datum is constituted at least one data block, comprising:
Determine 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 and described transport block size are compared;
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 during greater than described transport block size, be that benchmark is cut apart described and data with described transport block size, described business datum is constituted n data block, wherein, n is a positive integer.
9. method according to claim 7 is characterized in that, carries out spread processing according to the data block of described spread spectrum information after to described modulation, obtains transmitting data, comprising:
From the spreading factor table, search the spreading factor of call number correspondence in the described spread spectrum information, wherein, spreading factor in the described spreading factor table, transport block size and call number have relation one to one;
According to spread spectrum code sequence in the described spread spectrum information number and described spreading factor, determine corresponding spreading code;
Carry out spread processing according to the data block of described spreading code after, obtain transmitting data described modulation.
10. a base station is characterized in that, comprising:
Receiver module is used to receive the transmission data that described subscriber equipment sends, and wherein, described transmission data are that subscriber equipment is modulated with spread processing business datum according to described spread spectrum information and obtained;
Processing module is used for described transmission data are carried out despreading and demodulation process, obtains described business datum.
11. base station according to claim 10 is characterized in that, also comprises:
Determination module is used for determining spread spectrum information;
Sending module is used for spread spectrum information is sent to subscriber equipment;
Further, described determination module comprises:
Receive submodule, be used for the quantity of the subscriber equipment of definite current access, and receive the channel quality data of described each user equipment to report;
Spreading factor is determined submodule, is used for quantity and described channel quality data according to described subscriber equipment, determines spreading factor;
Spread spectrum information constitutes submodule, is used for determining corresponding call number and spread spectrum code sequence number to constitute spread spectrum information according to described spreading factor.
12. base station according to claim 11 is characterized in that:
Described spread spectrum information is determined submodule, specifically is used for determining according to current channel quality the type of spreading factor; Quantity according to described subscriber equipment is determined corresponding spreading factor from every type.
13. base station according to claim 11 is characterized in that:
Described spread spectrum information constitutes submodule, specifically is used for searching from the spreading factor table call number of described spreading factor correspondence, wherein, spreading factor in the described spreading factor table, transport block size and call number have relation one to one; Determine the spread spectrum code sequence number of spreading code correspondence in the described spreading factor; With described call number and described spread spectrum code sequence number formation spread spectrum information.
14. base station according to claim 13 is characterized in that, described processing module comprises:
Spreading factor is determined submodule, is used for determining spreading factor according to the call number of described spread spectrum information;
Spreading code is determined submodule, is used for determining corresponding spreading code according to the spread spectrum code sequence of spread spectrum information number and described spreading factor;
The despreading processing sub is used for according to described spreading code described transmission data being carried out despreading and handles the data block after obtaining modulating;
The demodulation process submodule is used for the data block after the described modulation is carried out demodulation process, obtains business datum.
15. a subscriber equipment is characterized in that, comprising:
Processing module is used for according to described spread spectrum information business datum being modulated and spread processing, obtains transmitting data;
Sending module is used for sending described transmission data to the base station, according to described spread spectrum information described transmission data is carried out despreading and demodulation process for described base station, obtains described business datum.
16. subscriber equipment according to claim 15 is characterized in that, also comprises:
Further, receiver module is used to receive the spread spectrum information that the base station sends;
Described processing module comprises:
Constitute submodule, be used for business datum being constituted at least one data block according to described spread spectrum information;
The modulation submodule is used for described data block is carried out data block after modulation treatment obtains modulating;
The spread spectrum submodule is used for carrying out spread processing according to the data block of described spread spectrum information after to described modulation, obtains transmitting data.
17. subscriber equipment according to claim 16 is characterized in that;
Described formation submodule specifically is used 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 and described transport block size are compared; 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 during greater than described transport block size, be that benchmark is cut apart described and data with described transmitted data amount, described business datum is constituted n data block, wherein, n is a positive integer.
18. subscriber equipment according to claim 16 is characterized in that:
Described spread spectrum submodule specifically is used for searching from the spreading factor table spreading factor of call number correspondence the described spread spectrum information, wherein, spreading factor in the described spreading factor table, transport block size and call number have relation one to one; According to spread spectrum code sequence in the described spread spectrum information number and described spreading factor, determine corresponding spreading code; Carry out spread processing according to the data block of described spreading code after, obtain transmitting data described modulation.
19. the transmission system of business datum is characterized in that during a machine class was communicated by letter, and comprised the as above arbitrary described base station of claim 10-14 and the as above arbitrary described subscriber equipment of claim 15-18.
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Effective date of registration: 20191212 Address after: 353, block a, No.79, Jinyi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Newpoint Enterprise Management Group Co.,Ltd. Address before: 100084 A, building 8, Tsinghua Science and Technology Park, No. 803, Zhongguancun East Road, building 1, Beijing, Haidian District Patentee before: INNOFIDEI TECHNOLOGIES Inc. |
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Address after: 311200 353, block a, 79 Jinyi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Newpoint Intelligent Technology Group Co.,Ltd. Address before: 311200 353, block a, 79 Jinyi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Newpoint Enterprise Management Group Co.,Ltd. |
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