CN101895981B - Uplink transmission method and device for internet-of-things system and internet-of-things terminal - Google Patents
Uplink transmission method and device for internet-of-things system and internet-of-things terminal Download PDFInfo
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Abstract
The invention provides an uplink transmission method and an uplink transmission device for an internet-of-things system and a user terminal and a base station applied to an internet of things, and aims to solve the problem of high system overhead brought by using signaling interaction in a high-rate service system. The uplink transmission method comprises the following steps of: transmitting an uplink synchronous code together with uplink service data to be transmitted when the terminal has the uplink service data for transmission; and not transmitting the uplink synchronous code when the terminal has no uplink service data for transmission. Because the signaling interaction is not adopted during the uplink transmission, the signaling cost is saved, the time for uplink synchronization on a network side can be shortened and the transmission delay of the service data can be reduced so as to reduce the resource consumption.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly relate to a kind of ascending transmission method of Internet of things system, a kind of uplink device of Internet of things system, and a kind of base station and user terminal that is applied to Internet of Things.
Background technology
In order in the mobile communication technology in future environment with keen competition, to sit pretty; Satisfy growing user's multiple demand; 3GPP is organized in the project verification work of passing through for the end of the year 2004 about 3GPP Long Term Evolution LTE (Long Term Evolution), quickens to formulate new air interface and Radio Access Network standard.The target of 3G LTE is: higher data rate, lower time delay, improved power system capacity and coverage, and lower cost.Based on above-mentioned target; The LTE system adopts OFDM (Orthogonal Frequency Division Multiplexing, OFDM), MIMO key technologies such as (Multiple-Input Multiple-Out-put, multiple-input and multiple-outputs) to reduce the influence of multipath fading; And the transmission rate that improves system; At present, the LTE system can provide the peak rate of up 100Mbps and up 50Mbps under the channel width of 20M, even higher.
The system of high-rate service is for example in the LTE system; No matter be up or up, be 1 RB (Resource Block, Resource Block) at the least resource thread of frequency domain; 1 RB is made up of continuous 12 subcarrier (subcarrier) at frequency domain; Between each subcarrier is 15kHz at interval, that is to say, 1 RB is 180kHz in the size of frequency domain.
The time domain scheduling unit of the minimum of LTE system is a sub-frame, and the length of a sub-frame is 1ms, and this 1ms is made up of two time slots, each time slot 0.5ms; Each time slot is made up of 7 symbol under the situation of normal CP (Normal Cyclic Prefix, normal cyclic prefix).
The uplink synchronisation method of LTE system is: at first network side detects the uplink synchronizing signals of a sub-frame; In upward signal, launch with the form of control signaling the synchronism deviation that detects then; After the terminal receives signaling; Remove to adjust the x time of next sub-frame of uplink as requested, in the hope of reaching synchronous.This is a kind of synchronization adjustment method of closed loop.
The method for transmitting uplink data of LTE system is: the running time-frequency resource that data format that at first can be adopted with control signaling terminal by network side and data can take; The terminal is after deciphering the control signaling; Know these information, on the running time-frequency resource of correspondence, adopt the data format of network side notice to transmit data then.
The problem that this closed loop synchronization adjustment method of LTE system exists is: will send to network side whenever there are data at the terminal; As long as the terminal is in the uplink loss state; Just need the terminal at first to send a uplink synchronous code and give network side, network side carries out uplink synchronous according to said uplink synchronous code and detects, and detected synchronism deviation is notified to the terminal with the form of control signaling; The terminal uses this synchronism deviation to come the transmission of modulate traffic data, in the hope of reaching synchronous.That is to say that obtaining uplink synchronous needs to carry out the mutual of signaling process between terminal and the network side, this has increased the expense of signaling, has wasted the utilization rate of Radio Resource, and system also seems complicated.
The problem that this method for transmitting uplink data of LTE system exists is: the running time-frequency resource that needs network side to formulate the transmission of uplink data form and take for the terminal with the form of control signaling; This has increased the expense of signaling, and has reduced the utilization rate of Radio Resource.
And for Internet of Things (IOT; The Internet ofThings) system of low rate traffic such as, owing to need data quantity transmitted very little, if use above-mentioned uplink synchronous and uplink data transmission method; Still can there be the problems referred to above, cause the expense of system very big.Therefore, the uplink data transmission method that in the system of high-rate service, uses also is not suitable for the system of low rate traffic.
Summary of the invention
Technical problem to be solved by this invention provides a kind of ascending transmission method, device of Internet of things system, to solve the very big problem of overhead of using Signalling exchange to bring in the high-rate service system.
Accordingly, the present invention also provides a kind of user terminal and base station that is applied to Internet of Things, to adapt to the low rate traffic of Internet of Things.
In order to address the above problem, the invention discloses a kind of ascending transmission method of Internet of things system, comprising:
When the terminal has uplink business data to send, uplink synchronous code and the uplink business data that needs to send are together sent;
When the terminal does not have uplink business data and need send, do not send uplink synchronous code;
Network side carries out uplink synchronous, the original position of the uplink business data that obtains receiving and length according to the uplink synchronous code that receives;
Wherein, said together transmission is meant uplink synchronous code and uplink business data is sent at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance;
Said terminal adopts fixing modulating-coding mechanism to send uplink business data.
Preferably, after the said uplink business data that uplink synchronous code and needs are sent together sent, this method also comprises: network side received said uplink synchronous code and uplink business data; Network side is decoded to the uplink business data that receives according to said original position and length.
Preferably, said uplink synchronous code and uplink business data adopt time-multiplexed mode to send at same time domain scheduling unit.
Preferably, said terminal is sent uplink business data and is comprised: the uplink business data bag is carried out CRC coding, the ID at this terminal of XOR on the CRC coding result, the transmission of encoding then;
Said network side receives uplink business data and comprises: network side is decoded, and the terminal of data is sent in identification according to the Termination ID in the decoded result then, and correctly receives data.
The present invention also provides a kind of uplink device of Internet of things system, and said Internet of things system comprises terminal and network side, and said device comprises:
Data transmission blocks is positioned at the terminal, is used for when the terminal has uplink business data to send, and uplink synchronous code and the uplink business data that needs to send are together sent; When the terminal does not have uplink business data and need send, do not send uplink synchronous code;
Data reception module is positioned at network side, is used to receive said uplink synchronous code and uplink business data, carries out uplink synchronous according to the uplink synchronous code that receives, the original position of the uplink business data that obtains receiving and length; And the uplink business data that receives is decoded according to said original position and length;
Wherein, said together the transmission is meant that data transmission blocks sends uplink synchronous code and uplink business data at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance;
Said data transmission blocks adopts fixing modulating-coding mechanism to send uplink business data.
Preferably, said data transmission blocks adopts time-multiplexed mode to send at same time domain scheduling unit said uplink synchronous code and uplink business data.
Preferably, said data transmission blocks comprises:
The Data Identification unit is used for the uplink business data bag is carried out CRC coding, the ID at XOR terminal on the CRC coding result, and the XOR result sent into the coding transmitting element;
The coding transmitting element is used for the transmission of encoding to the XOR result;
Said data reception module comprises:
The uplink synchronous unit is used to receive said uplink synchronous code and carries out uplink synchronous, the original position of the uplink business data that obtains receiving and length;
Decoding unit is used for according to said original position and length the uplink business data that receives being decoded;
The identification receiving element is used for the terminal according to the Termination ID identification transmission data of decoded result.
The present invention also provides a kind of user terminal that is applied to Internet of Things, comprising:
Data transmission blocks is used for when user terminal has uplink business data to send, and uplink synchronous code and the uplink business data that needs to send are together sent; When user terminal does not have uplink business data and need send, do not send uplink synchronous code;
Wherein, said together the transmission is meant that data transmission blocks sends uplink synchronous code and uplink business data at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance;
Said data transmission blocks adopts fixing modulating-coding mechanism to send uplink business data.
Preferably, said data transmission blocks comprises:
The Data Identification unit is used for the uplink business data bag is carried out CRC coding, the ID of XOR user terminal on the CRC coding result, and the XOR result sent into the coding transmitting element;
The coding transmitting element is used for the transmission of encoding to the XOR result.
The present invention also provides a kind of base station that is applied to Internet of Things, comprising:
The uplink synchronous module; Be used for when user terminal has uplink business data to send; Receive the uplink synchronous code and the uplink business data that together send over, and carry out uplink synchronous, the original position of the uplink business data that obtains receiving and length according to the uplink synchronous code that receives;
Decoder module is used for according to said original position and length the uplink business data that receives being decoded;
Wherein, said together transmission is meant uplink synchronous code and uplink business data is sent at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance.
Preferably, said base station also comprises:
The identification receiver module is used for sending the user terminal of data according to the user terminal ID identification of decoded result.
Compared with prior art, the present invention has the following advantages:
At first, the present invention is directed to Internet of Things low rate, business characteristic that transmission quantity is little, the terminal is when sending uplink synchronous code and uplink business data; Do not adopt the mode of Signalling exchange, but adopt when the terminal has uplink business data to send, uplink synchronous code and the uplink business data that needs to send are together sent; When the terminal does not have uplink business data to send; Do not send the mechanism of uplink synchronous code, saved signaling consumption like this, can shorten the time that network side carries out uplink synchronous; Reduce the propagation delay time of business datum, thereby reduce resource consumption.
Secondly; The mechanism that the present invention also adopts uplink synchronous code and uplink business data in same time domain scheduling unit, to transmit; Simultaneously, adopt fixing data format to transmit data, meet the characteristics of Internet of Things low data rate; Such data transmission mechanism is simple and reliable, has further saved signaling consumption.And because volume of transmitted data is little, therefore the fixing data format of employing can satisfy the transmission needs, thereby has avoided adopting in the high-rate service system control signaling to indicate dynamic data format, increases the problem of decoding complex degree, reduction resource utilization.
Description of drawings
Fig. 1 is the ascending transmission method flow chart of the embodiment of the invention one said a kind of Internet of things system;
Fig. 2 is the uplink structure drawing of device of the embodiment of the invention three said a kind of Internet of things system;
Fig. 3 is the embodiment of the invention four said a kind of user terminal of Internet of Things and structure charts of base station of being applied to.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and embodiment the present invention done further detailed explanation.
Internet of Things refers to various information sensing equipment, combines and a huge network forming like all devices such as radio frequency identification (RFID) device, infrared inductor, global positioning system, laser scanner and the Internet.Internet of Things is of many uses, spreads all over a plurality of fields such as intelligent transportation, environmental protection, government work, public safety, safety home, intelligent fire, industry monitoring, old man's nursing, personal health.
To Internet of Things low rate, characteristics that transmission quantity is little, the invention provides a kind of uplink data transmission method that is different from the high-rate service system, be elaborated through embodiment below.
Embodiment one:
With reference to Fig. 1, be the ascending transmission method flow chart of the embodiment of the invention one said a kind of Internet of things system.
In the Internet of Things operation system, transfer of data relates to terminal and network side, and the uplink process is following:
Step 101 when the terminal has uplink business data to send, is together sent uplink synchronous code and the uplink business data that needs to send; When the terminal does not have uplink business data and need send, do not send uplink synchronous code;
Wherein, described " together send " be appreciated that into:
Uplink synchronous code and uplink business data can send at same time domain scheduling unit.
And said uplink synchronous code and uplink business data can also adopt the mode of TDM (Time Division Multiplexing, time division multiplexing) to send at same time domain scheduling unit.
Certainly, present embodiment does not limit this, can also adopt other together send mode.
Because the terminal is that uplink synchronous code and uplink business data are together sended over, so network side also is together to receive.
Can find out through above flow process; Present embodiment is when sending uplink synchronous code and uplink business data; Adopt when needs transmission business datum, the strategy with uplink synchronous code and uplink business data together send does not so just need terminal and network side to carry out Signalling exchange; Thereby shortened the time that network side carries out uplink synchronous, reduced the propagation delay time of business datum; And, do not adopt the mode of Signalling exchange, further improved the utilization rate of Radio Resource, reduced the expense of whole Internet of Things operation system.
Based on the foregoing description, preferred, said terminal can also adopt fixing MCS (Modulation Coding Scheme, modulating-coding mechanism) to send uplink business data, promptly adopts fixing data format to send.And in the described high-rate service of the prior art system,, adopted upstream control signaling to indicate dynamic data format in order to support upstream data form flexibly, and increased complexity of decoding like this, also reduced resource utilization simultaneously.Contrast can know that therefore the low rate traffic system adopts fixing data format can satisfy the transmission needs, thereby can reduce the complexity of decoding because volume of transmitted data is little, improves resource utilization.Certainly, present embodiment does not limit this, can also adopt other form.
Preferably, in the above-mentioned flow process, said uplink synchronous code can also adopt and have CAZAC the sequence of (Constant Amplitude Zero Auto Correlation, the permanent width of cloth zero auto-correlation) characteristic, helps synchronizing process like this and obtains better correlation.Certainly, present embodiment does not limit this, can also adopt the sequence of other characteristic.
Preferably, the terminal can also identify uplink business data when sending uplink business data, is by which terminal to be sent so that network side can identify business datum.In the present embodiment; The concrete grammar of said sign is: the uplink business data bag is carried out CRC (Cyclic Redundancy Check; CRC) coding, the ID at XOR terminal on the CRC coding result (Identification, sign); Carry out common coding, for example convolution code then.Accordingly, the processing of network side is: at first carry out synchronously, decode after going up synchronously according to uplink synchronous code, and the different terminal ID that obtains through decoding then, just can tell is the data which terminal sends to it.Like this, network side just can correctly receive business datum.Certainly, present embodiment does not limit this, can also adopt other identification method.
In sum, the mechanism that adopts uplink synchronous code and uplink business data in same time domain scheduling unit, to transmit, simultaneously; Adopt fixing data format to transmit data; The characteristics that meet the Internet of Things low data rate, such data transmission mechanism is simple and reliable, has further saved signaling consumption.
Embodiment two:
Based on embodiment one, the frame structure with the LTE system is an example below, specifies the process of transmitting and the receiving course of uplink business data.
It is following that the process of transmitting of uplink business data is carried out at the terminal:
As previously mentioned, the time domain scheduling unit of the minimum of LTE system is a sub-frame, and the length of a sub-frame is 1ms, and this 1ms is made up of two time slots (slot), each time slot 0.5ms; Each time slot is made up of 7 symbol under the situation of normal CP (Normal Cyclic Prefix, normal cyclic prefix).
The LTE system is 1 RB (Resource Block at the least resource thread of frequency domain; Resource Block); 1 RB is made up of continuous 12 subcarrier (subcarrier) at frequency domain; Between each subcarrier is 1 5kHz at interval, that is to say, 1 RB is 1 80kHz in the size of frequency domain.The supposing the system bandwidth is 1.4M, and corresponding frequency domain resource is 6 RB.
Several symbol that system can be designed to a sub-frame front are used for carrying synchronous code.For example 1 of the front slot (7 symbol) is used for carrying synchronous code, and 1 slot then (7 symbol) is used for the bearer service data.Synchronous code can select to adopt the sequence with CAZAC characteristic, and this sequence has extraordinary correlation, is very beneficial for carrying out uplink synchronous.
Synchronous code is mapped on the corresponding frequency domain resource of 1 slot of front, the frequency domain resource of each symbol corresponding 6 RB.
Initial data is carried out the CRC coding, produce the CRC of 16 bits, it is attached to raw information back, the ID at terminal on XOR on the CRC of 16 bits; Then encode QPSK (Quaternary Phase Shift Keying, QPSK) modulation; Modulation symbol is mapped on the corresponding frequency domain resource of 1 slot of back, the frequency domain resource of each symbol corresponding 6 RB, through IFFT (Inverse Fast Fourier Transform; Inverse fast Fourier transform), up-conversion, PA (Power Amplify; Power amplification), send.
Accordingly, it is following that network side carries out the receiving course of uplink business data:
Network side carries out down-conversion to the data that receive, and the synchronous code through 1 slot in front can obtain uplink synchronous; Then, to back 1 slot of this subframe, 6 RB frequency domain resource that each symbol is corresponding are carried out FFT and are changed; On frequency domain, carry out equilibrium, the QPSK modulation symbol is carried out demodulation, decoding; The ID at terminal on the XOR after CRC check is passed through, just can confirm that this is the data which terminal sends to it.
Embodiment three:
With reference to Fig. 2, be the uplink structure drawing of device of the embodiment of the invention three said a kind of Internet of things system.
Wherein, said Internet of things system comprises terminal and network side, and said device mainly comprises:
Data transmission blocks 21 is positioned at the terminal, is used for when the terminal has uplink business data to send, and uplink synchronous code and the uplink business data that needs to send are together sent; When the terminal does not have uplink business data and need send, do not send uplink synchronous code;
Data reception module 22 is positioned at network side, is used to receive said uplink synchronous code and uplink business data, carries out uplink synchronous according to the uplink synchronous code that receives, the original position of the uplink business data that obtains receiving and length; And the uplink business data that receives is decoded according to said original position and length.
Preferably, said data transmission blocks 21 can be sent uplink synchronous code and uplink business data at same time domain scheduling unit.
Preferably, said data transmission blocks 21 can also adopt the mode of TDM to send at same time domain scheduling unit said uplink synchronous code and uplink business data.
Preferably, carry out uplink synchronous in order to help network side, said uplink synchronous code can adopt the sequence with CAZAC characteristic.
Preferably, in order to reduce the complexity of network side decoding, improve the utilization rate of Radio Resource, said data transmission blocks 21 can adopt fixing MCS mechanism to send uplink business data.
Preferably, said data transmission blocks 21 also identifies uplink business data, is by which terminal to be sent so that network side can identify business datum.Therefore, said data transmission blocks 21 may further include:
Data Identification unit 211 is used for the uplink business data bag is carried out CRC coding, the ID at XOR terminal on the CRC coding result, and the XOR result sent into coding transmitting element 212;
Coding transmitting element 212 is used for the transmission of encoding to the XOR result.
Accordingly, said data reception module 22 may further include:
Uplink synchronous unit 221 is used to receive said uplink synchronous code and carries out uplink synchronous, the original position of the uplink business data that obtains receiving and length;
Decoding unit 222 is used for according to said original position and length the uplink business data that receives being decoded;
Identification receiving element 223 is used for the terminal according to the Termination ID identification transmission data of decoded result.
Above-mentioned uplink device is applied in the Internet of things system; A kind of simple and reliable uplink synchronous and the mechanism of upstream data transmission can be provided, need not use the mode of Signalling exchange, can save signaling consumption; Reduce the propagation delay time of business datum, improve the utilization rate of Radio Resource.
Embodiment four:
Based on the application of embodiment three, the present invention also provides a kind of user terminal embodiment that is applied to Internet of Things, and a kind of base station embodiment that is applied to Internet of Things.
With reference to Fig. 3, be the embodiment of the invention four said a kind of user terminal of Internet of Things and structure charts of base station of being applied to.
The said user terminal that is applied to Internet of Things can comprise:
Data transmission blocks 31 is used for when user terminal has uplink business data to send, and uplink synchronous code and the uplink business data that needs to send are together sent; When user terminal does not have uplink business data and need send, do not send uplink synchronous code.
The function of said data transmission blocks 31 is different from the data sending function of legacy user terminals, does not promptly use Signalling exchange, can save the expense of Signalling exchange like this, reduces the propagation delay time of business datum, improves utilization ratio of wireless resources.
Preferably, said data transmission blocks 31 can be sent uplink synchronous code and uplink business data at same time domain scheduling unit.And said data transmission blocks 31 can also adopt the mode of TDM to send at same time domain scheduling unit said uplink synchronous code and uplink business data.
Preferably, carry out uplink synchronous in order to help network side, said uplink synchronous code can adopt the sequence with CAZAC characteristic.
Preferably, in order to reduce the complexity of network side decoding, improve the utilization rate of Radio Resource, said data transmission blocks 31 can adopt fixing MCS mechanism to send uplink business data.
Preferably, said data transmission blocks 31 also identifies uplink business data, is by which terminal to be sent so that network side can identify business datum.Therefore, said data transmission blocks 31 may further include:
Data Identification unit 311 is used for the uplink business data bag is carried out CRC coding, the ID at XOR terminal on the CRC coding result, and the XOR result sent into coding transmitting element 312;
Coding transmitting element 3 12 is used for the transmission of encoding to the XOR result.
With reference to Fig. 3, the said base station that is applied to Internet of Things can comprise:
Uplink synchronous module 32; Be used for when user terminal has uplink business data to send; Receive the uplink synchronous code and the uplink business data that together send over, and carry out uplink synchronous, the original position of the uplink business data that obtains receiving and length according to said uplink synchronous code;
Decoder module 33 is used for according to said original position and length the uplink business data that receives being decoded.
Preferably, said base station can also comprise:
Identification receiver module 34 is used for sending the user terminal of data according to the user terminal ID identification of decoded result.
Described base station of the foregoing description and user terminal can be applicable in the Internet of things system, can adapt to the characteristics of Internet of things system well, play the excellent communications effect.
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.For device and system embodiment, because it is similar basically with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
More than to ascending transmission method, device and a kind of base station and user terminal that is applied to Internet of Things of a kind of Internet of things system provided by the present invention; Carried out detailed introduction; Used concrete example among this paper 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 on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. the ascending transmission method of an Internet of things system is characterized in that, comprising:
When the terminal has uplink business data to send, uplink synchronous code and the uplink business data that needs to send are together sent;
When the terminal does not have uplink business data and need send, do not send uplink synchronous code;
Network side carries out uplink synchronous, the original position of the uplink business data that obtains receiving and length according to the uplink synchronous code that receives;
Wherein, said together transmission is meant uplink synchronous code and uplink business data is sent at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance;
Said terminal adopts fixing modulating-coding mechanism to send uplink business data.
2. method according to claim 1 is characterized in that, after the said uplink business data that uplink synchronous code and needs are sent together sent, this method also comprised:
Network side receives said uplink synchronous code and uplink business data;
Network side is decoded to the uplink business data that receives according to said original position and length.
3. method according to claim 1 is characterized in that:
Said uplink synchronous code and uplink business data adopt time-multiplexed mode to send at same time domain scheduling unit.
4. method according to claim 2 is characterized in that:
Said terminal is sent uplink business data and is comprised: the uplink business data bag is carried out CRC coding, the ID at this terminal of XOR on the CRC coding result, the transmission of encoding then;
Said network side receives uplink business data and comprises: network side is decoded, and the terminal of data is sent in identification according to the Termination ID in the decoded result then, and correctly receives data.
5. the uplink device of an Internet of things system, said Internet of things system comprises terminal and network side, it is characterized in that, said device comprises:
Data transmission blocks is positioned at the terminal, is used for when the terminal has uplink business data to send, and uplink synchronous code and the uplink business data that needs to send are together sent; When the terminal does not have uplink business data and need send, do not send uplink synchronous code;
Data reception module is positioned at network side, is used to receive said uplink synchronous code and uplink business data, carries out uplink synchronous according to the uplink synchronous code that receives, the original position of the uplink business data that obtains receiving and length; And the uplink business data that receives is decoded according to said original position and length;
Wherein, said together the transmission is meant that data transmission blocks sends uplink synchronous code and uplink business data at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance;
Said data transmission blocks adopts fixing modulating-coding mechanism to send uplink business data.
6. device according to claim 5 is characterized in that:
Said data transmission blocks adopts time-multiplexed mode to send at same time domain scheduling unit said uplink synchronous code and uplink business data.
7. according to claim 5 or 6 described devices, it is characterized in that:
Said data transmission blocks comprises:
The Data Identification unit is used for the uplink business data bag is carried out CRC coding, the ID at XOR terminal on the CRC coding result, and the XOR result sent into the coding transmitting element;
The coding transmitting element is used for the transmission of encoding to the XOR result;
Said data reception module comprises:
The uplink synchronous unit is used to receive said uplink synchronous code and carries out uplink synchronous, the original position of the uplink business data that obtains receiving and length;
Decoding unit is used for according to said original position and length the uplink business data that receives being decoded;
The identification receiving element is used for the terminal according to the Termination ID identification transmission data of decoded result.
8. a user terminal that is applied to Internet of Things is characterized in that, comprising:
Data transmission blocks is used for when user terminal has uplink business data to send, and uplink synchronous code and the uplink business data that needs to send are together sent; When user terminal does not have uplink business data and need send, do not send uplink synchronous code;
Wherein, said together the transmission is meant that data transmission blocks sends uplink synchronous code and uplink business data at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance;
Said data transmission blocks adopts fixing modulating-coding mechanism to send uplink business data.
9. user terminal according to claim 8 is characterized in that, said data transmission blocks comprises:
The Data Identification unit is used for the uplink business data bag is carried out CRC coding, the ID of XOR user terminal on the CRC coding result, and the XOR result sent into the coding transmitting element;
The coding transmitting element is used for the transmission of encoding to the XOR result.
10. a base station that is applied to Internet of Things is characterized in that, comprising:
The uplink synchronous module; Be used for when user terminal has uplink business data to send; Receive the uplink synchronous code and the uplink business data that together send over, and carry out uplink synchronous, the original position of the uplink business data that obtains receiving and length according to the uplink synchronous code that receives;
Decoder module is used for according to said original position and length the uplink business data that receives being decoded;
Wherein, said together transmission is meant uplink synchronous code and uplink business data is sent at same time domain scheduling unit;
Said uplink synchronous code adopts the sequence with the permanent width of cloth zero autocorrelation performance.
11. base station according to claim 10 is characterized in that, also comprises:
The identification receiver module is used for sending the user terminal of data according to the user terminal ID identification of decoded result.
Priority Applications (1)
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| CN102780553A (en) * | 2011-05-10 | 2012-11-14 | 北京联拓恒芯科技发展有限公司 | Method, system and equipment for transmitting synchronous code sequence and synchronizing |
| WO2015061943A1 (en) * | 2013-10-28 | 2015-05-07 | 华为技术有限公司 | Resource scheduling method, apparatus and system |
| CN103647629B (en) * | 2013-11-28 | 2016-08-17 | 安徽理工大学 | A kind of Internet of Things method for synchronizing time based on feedback mechanism |
| CN106686571B (en) | 2015-11-11 | 2020-06-16 | 华为技术有限公司 | Method and device for processing discovery message |
| CN107231689B (en) * | 2016-03-24 | 2020-03-24 | 电信科学技术研究院 | Terminal-initiated data transmission method and device |
| WO2018170835A1 (en) * | 2017-03-23 | 2018-09-27 | Oppo广东移动通信有限公司 | Uplink data transmission method, terminal, network side device and system |
| CN107343320A (en) * | 2017-03-29 | 2017-11-10 | 武汉米风通信技术有限公司 | A kind of broadcasting and TV frequency spectrum ultra-narrow band Internet of Things downlink transmission method |
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| CN101154984A (en) * | 2006-09-25 | 2008-04-02 | 大唐移动通信设备有限公司 | Method and system for remaining ascending synchronization |
| CN101207843A (en) * | 2006-12-18 | 2008-06-25 | 中兴通讯股份有限公司 | Method for enhancing decipher of uplink physical channel |
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| WO2006030913A1 (en) * | 2004-09-17 | 2006-03-23 | Ntt Docomo, Inc. | Mobile station, base station, and mobile communication method |
| CN100512053C (en) * | 2005-05-24 | 2009-07-08 | 上海原动力通信科技有限公司 | Method for determining channel shock response of user of time division synchronization CDMA system |
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| CN101154984A (en) * | 2006-09-25 | 2008-04-02 | 大唐移动通信设备有限公司 | Method and system for remaining ascending synchronization |
| CN101207843A (en) * | 2006-12-18 | 2008-06-25 | 中兴通讯股份有限公司 | Method for enhancing decipher of uplink physical channel |
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| 李萍.AT89S51单片机原理、开发与应用实例.《AT89S51单片机原理、开发与应用实例》.中国电力出版社,2008, * |
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