CN109617665A

CN109617665A - A Hierarchical Data Transmission Method in Narrowband Internet of Things

Info

Publication number: CN109617665A
Application number: CN201910040484.5A
Authority: CN
Inventors: 王洋; 陈冀东
Original assignee: Shenzhen Polytechnic
Current assignee: Shenzhen Vocational And Technical University
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2019-04-12
Anticipated expiration: 2039-01-16
Also published as: CN109617665B

Abstract

The present invention provides ranked data transmission method in a kind of narrowband Internet of Things, belongs to wireless communication field.The present invention includes the following steps: that base station sends the first configuration information and downlink channel condition information reference signal CSI-RS1 to the terminal for being located at geographical location X；The terminal receives first configuration information；Base station sends the second configuration information to the terminal；The terminal receives second configuration information, and sends data according to the second configuration information；Fail if sent, base station, which is sent, to be updated the first configuration information and update the second configuration information, and the terminal is according to the first configuration information of update and updates the second configuration information retransmission data.The invention has the benefit that overcoming the problems, such as that existing narrowband Internet of Things intermediate frequency spectrum efficiency is poor, the capacity of narrowband Internet of things system is improved.

Description

Ranked data transmission method in a kind of narrowband Internet of Things

Technical field

The present invention relates to ranked data transmission methods in wireless communication field more particularly to a kind of narrowband Internet of Things.

Background technique

5G will meet people in the diversified business demand in the various regions such as inhabitation, work, leisure and traffic, even if close Collect residential quarter, office, stadium, outdoor rally, subway, through street, high-speed rail and wide area covering etc. with ultra high flux density, Superelevation connects number density, the scene of ultrahigh-mobility feature, or user provides ultra high-definition video, virtual reality, enhancing The ultimate attainment business experiences such as reality, cloud desktop, game on line.At the same time, 5G will also penetrate into Internet of Things and various industries field, It is merged with industrial plants, Medical Instruments, vehicles even depth, effectively meets the multiplicity of the vertical industries such as industry, medical treatment, traffic Change business demand, realizes really " all things on earth interconnection ".

5G application scenarios can be divided into two major classes, i.e. mobile broadband (MBB, Mobile Broadband) and Internet of Things (IoT, Internet of Things).Wherein, the major technique demand of mobile broadband access is high capacity, provides high data speed Rate, to meet constantly increasing for data traffic requirement.Internet of Things is mainly by machine communication (MTC, Machine Type Communication) the driving of demand can be further divided into two types, magnanimity machine communication including low rate (MMC, ) and the highly reliable machine communication of low time delay MassiveMachineCommunication.Wherein, for the magnanimity machine of low rate Device communication, the access of magnanimity node low rate, the data packet of transmission is usually smaller, and interval time can be relatively long, this kind of node Cost and power consumption generally also can be very low；The machine communication highly reliable for low time delay, is mainly directed towards real-time and reliability requirement Relatively high machine communication, such as real-time alert, real time monitoring etc..

In 5th Generation Mobile Communication System, a kind of to need the scene studied be data in narrowband Internet of Things under TDD scene Reliable transmission problem, common solution rely primarily on data and transmission are repeated several times, this results in the spectrum efficiency ratio of system It is lower, how to increase the spectrum efficiency of narrowband Internet of things system, is Internet of things system major issue urgently to be resolved.

Summary of the invention

To solve the problems, such as that narrowband Internet of Things intermediate frequency spectrum efficiency is low in the prior art, the present invention provides a kind of narrowband Internet of Things Middle ranked data transmission method.

The present invention includes the following steps:

S1: base station sends the first configuration information and downlink channel condition information reference signal CSI-RS1 to positioned at geographical position The terminal of X is set, first configuration information includes at least: the receiving antenna number information of the base station；

S2: the terminal receives first configuration information, true according to the downlink channel condition reference signal CSI-RS1 Determine channel state information vector H1；

S3: the base station sends the second configuration information to the terminal, and second configuration information includes: down channel shape The configuration information of state information reference signal CSI-RS2, the first shared resource information, the second shared resource information, described second is total It enjoys the corresponding second sounding reference signal resource aggregate information of resource and the second sounding reference signal sequence aggregate information, third is total Resource information is enjoyed, frequency expansion sequence set information when data is sent using the third shared resource, collides too strong instruction information Send resource information；

S4: the terminal receives second configuration information, and when the terminal has data to need to send, the terminal is true Determine the current geographic position Y of oneself, the terminal matches confidence according to the downlink channel condition information reference signal CSI-RS2's It ceases and determines channel state information vector H2, and determined to send number according to current geographic position Y or channel state information vector H2 According to mode；

S5: terminal is the first shared resource, the second shared resource, the sequence of third shared resource transmission number according to priority According to until sending successfully, if the terminal is anti-using the base station is not received after the third shared resource transmission data The reception successful information of feedback, then the terminal sends the resource information transmission too strong finger of collision according to too strong instruction information is collided Show information to base station；

S6: it after the base station receives the too strong instruction information of the collision, sends and updates the first configuration information and update the Two configuration informations, the terminal retransmit data according to the first configuration information and the second configuration information of update is updated.

The present invention is further improved, in step sl, if the receiving antenna number M is more than or equal to 128, institute Stating the first configuration information further includes the first sounding reference signal resource aggregate information and the first sounding reference signal sequence set letter Breath；

In step s 2, if first configuration information include the first sounding reference signal resource aggregate information and The first sounding reference signal sequence aggregate information, then the terminal is believed according to the first sounding reference signal resource set It ceases and determines the first sounding reference signal resource set, the first spy is determined according to the first sounding reference signal sequence aggregate information Reference signal sequence set is surveyed, the terminal selects the first detection with reference to letter from the first sounding reference signal resource set Number resource selects the first spy according to first sounding reference signal resource from the first sounding reference signal sequence set Reference signal sequence is surveyed, the terminal sends the first detection reference signal sequence on first sounding reference signal resource Column；

In step s3, the base station receives first sounding reference signal sequence that the terminal is sent, according to institute It states the first sounding reference signal sequence and determines the first space fingerprint；Determine that second space refers to according to the second sounding reference signal sequence Line.

The present invention is further improved, in step s 4, if the geographical location Y and geographical location X of the terminal away from It is more than or equal to 0.97 from the inner product for being less than or equal to 0.3 meter or channel state information the vector H1 and H2, then the terminal uses First shared resource sends the data, if the geographical location Y of the terminal with the X of geographical location at a distance from greater than 0.3 meter and Less than or equal to 1 meter or the inner product of channel state information the vector H1 and H2 less than 0.97 and are more than or equal to 0.9, then the terminal The second sounding reference signal resource is determined according to the second sounding reference signal resource aggregate information, according to second detection Reference signal sequence aggregate information determines the second sounding reference signal sequence, and the terminal is provided in second detection reference signal Second sounding reference signal sequence is sent on source, sends the data using second shared resource；If the end The geographical location Y at end is greater than 1 meter at a distance from the X of geographical location or the inner product of channel state information the vector H1 and H2 are less than 0.9, then the terminal selects frequency expansion sequence to spread the data from the frequency expansion sequence set, then using described Third shared resource sends the data.

The present invention is further improved, in step s 6, described to update the first detection ginseng configured in the first configuration information Examine signal resource set, the first sounding reference signal sequence set is all larger than the first detection configured in first configuration information Reference signal resource set, the first sounding reference signal sequence set, it is described to update the second spy configured in the second configuration information It surveys reference signal resource set, the second sounding reference signal sequence set, third shared resource, frequency expansion sequence set and is all larger than institute State the second sounding reference signal resource set configured in the second configuration information, the second sounding reference signal sequence set, third Shared resource, frequency expansion sequence set, wherein spreading sequence length in the frequency expansion sequence set updated in the second configuration information It is the 2 times or more of spreading sequence length in the frequency expansion sequence set in second configuration information.

The present invention is further improved, and the H1 and H2 are the vector of M*1 dimension, and M is antenna number.

The present invention is further improved, and the first sounding reference signal resource set is less than second detection with reference to letter Number resource collection, the first sounding reference signal sequence set is less than the second sounding reference signal sequence set, described First shared resource and second shared resource are equal in magnitude.

The present invention is further improved, and the length N of frequency expansion sequence is more than or equal to 2*M in the frequency expansion sequence set, and M is day Line number, the size of the third shared resource are N times of the first shared resource size.

The present invention is further improved, and the identification information of the terminal is carried in the data, if the terminal uses First shared resource sends data, then the base station is based on first space fingerprint and receives the data；If described Terminal sends data using second shared resource, then the base station is based on second space fingerprint and receives the data, described Second space fingerprint is obtained based on second sounding reference signal sequence that the base station receives.

The present invention is further improved, and the downlink channel condition information reference signal CSI-RS2 is located at institute in the time domain Before stating the second shared resource, difference is no more than 2ms；Second sounding reference signal resource is located at described second in the time domain Before shared resource, difference is no more than 0.5ms.

The present invention is further improved, in step s 5, the terminal using full power send it is described collision it is too strong Indicate information, wherein the too strong instruction information of collision is the shared sequence of a multiple terminals.

Compared with prior art, the beneficial effects of the present invention are: overcoming asking for existing narrowband Internet of Things intermediate frequency spectrum efficiency difference Topic, improves the capacity of narrowband Internet of things system；In the transmission, terminal is allowed to send number using the stronger shared resource of robustness According to realizing that the hierarchical transmission of data, efficiency of transmission are higher.

Detailed description of the invention

Fig. 1 is the method for the present invention flow chart；

Fig. 2 is shared resource positional diagram.

Specific embodiment

The present invention is described in further details with reference to the accompanying drawings and examples.

As depicted in figs. 1 and 2, the present invention includes the following steps:

The present invention is described in detail with reference to embodiments.

Embodiment 1:

Base station sends the first configuration information and downlink channel condition information reference signal CSI-RS1 to positioned at geographical location X Terminal, the first configuration information includes at least: the receiving antenna number information of base station, if receiving antenna number M is more than or equal to 128, then the first configuration information further includes the first sounding reference signal resource aggregate information and the first sounding reference signal sequence Aggregate information.It is to be appreciated that receiving antenna number is more, base station is stronger by the ability of spatial information distinguishing terminal, available Space finger print information is more, as long as such base station effectively carries out area to terminal by obtaining the up channel of terminal Point, thus the spectrum efficiency of lifting system.

Terminal receives the first configuration information, determines channel state information according to downlink channel condition reference signal CSI-RS1 Vector H1, if the first configuration information includes the first sounding reference signal resource aggregate information and the first sounding reference signal sequence Aggregate information, then terminal determines the first sounding reference signal resource set according to the first sounding reference signal resource aggregate information, Determine that the first sounding reference signal sequence set, terminal are joined from the first detection according to the first sounding reference signal sequence aggregate information It examines and selects the first sounding reference signal resource in signal resource set, joined according to the first sounding reference signal resource from the first detection It examines and selects the first sounding reference signal sequence in signal sequence set, terminal sends first on the first sounding reference signal resource Sounding reference signal sequence.

Base station receives the first sounding reference signal sequence that terminal is sent, and determines the according to the first sounding reference signal sequence One space fingerprint.

Base station sends the second configuration information to terminal, and the second configuration information includes at least downlink channel condition information with reference to letter The configuration information of number CSI-RS2, the first shared resource information, the second shared resource information, the second shared resource corresponding second Sounding reference signal resource aggregate information and the second sounding reference signal sequence aggregate information, third shared resource information use Third shared resource sends frequency expansion sequence set information when data, collides too strong instruction information and sends resource information.It needs Bright, the purpose for configuring the second shared resource and third shared resource is if multiple terminals send data in the first shared resource The bigger upstream data for causing base station that can not be properly received each terminal transmission of interference is generated, then allows terminal logical It crosses the second shared resource, and/or third shared resource carries out data re-transmission, the number in the second shared resource and third shared resource It can be reduced according to the probability of collision.

Terminal receives the second configuration information, and when terminal has data to need to send, terminal determines the geographical location Y of oneself, Terminal receives downlink channel condition information reference signal according to the configuration information of downlink channel condition information reference signal CSI-RS2 CSI-RS2 determines channel state information vector H2, if the geographical location Y of terminal is less than or equal to 0.3 at a distance from the X of geographical location (distance for illustrating that terminal during this period of time moves is very short, it is believed that channel state information is not sent out in this period for rice Changing) or the inner product of channel state information vector H1 and H2 be more than or equal to and 0.97 (illustrate the current channel state information of terminal It is similar with the channel state information obtained before based on CSI-RS1), then terminal sends data using the first shared resource, if The geographical location Y of terminal, which is greater than 0.3 meter at a distance from the X of geographical location and is less than or equal to 1 meter, (illustrates that terminal is during this period of time moved Some distances are moved, it is believed that channel state information may change in this period, so terminal is needed to retransmit Detection reference signal allows the base station to obtain the corresponding space fingerprint of terminal) or the inner product of channel state information vector H1 and H2 be less than 0.97 and it is more than or equal to 0.9 and (illustrates that the current channel state information of terminal is believed with the channel status obtained before based on CSI-RS1 Some variations have occurred in breath), then terminal determines the second detection reference signal according to the second sounding reference signal resource aggregate information Resource determines the second sounding reference signal sequence according to the second sounding reference signal sequence aggregate information, and terminal is in the second detection The second sounding reference signal sequence is sent on reference signal resource, sends data using the second shared resource；If the ground of terminal Position Y is managed (to illustrate that terminal has during this period of time moved bigger distance greater than 1 meter at a distance from the X of geographical location, believe Than very fast, base station can not probably receive the data of terminal transmission by way of the fingerprint of space for channel state information variation) Or the inner product of channel state information vector H1 and H2 (illustrate the current channel state information of terminal and are based on before less than 0.9 Very big variation has occurred in the channel state information that CSI-RS1 is obtained, and base station can not probably pass through the side of space fingerprint Formula come receive terminal transmission data), then terminal selects frequency expansion sequence to spread data from frequency expansion sequence set, then Data are sent using third shared resource.

If terminal is using the reception successful information for not receiving base station feedback after the first shared resource transmission data, eventually End determines the second sounding reference signal sequence according to the second sounding reference signal sequence aggregate information, and terminal is in the second detection reference The second sounding reference signal sequence is sent on signal resource, sends data using the second shared resource.If terminal uses second The reception successful information of base station feedback is not received after shared resource transmission data, then terminal selects to expand from frequency expansion sequence set Frequency sequence spreads data, then sends data using third shared resource.The advantage of doing so is that more using robustness Strong shared resource come allow terminal send data, realize the hierarchical transmission of data.

If terminal is using the reception successful information for not receiving base station feedback after third shared resource transmission data, this is said There may be multiple terminals sending data in bright shared resource, interference is very big, then terminal is too strong according to colliding Indicate that information sends resource information and sends the too strong instruction information of collision to base station, it is desirable to which base station is dropped by increasing more resources Collision possibility of the low user in shared resource, thus the spectrum efficiency of lifting system.

Base station sends the first configuration information of update after receiving the too strong instruction information of collision and updates the second configuration information, institute State terminal receive base station transmission the first configuration information of update and update the second configuration information, according to update the first configuration information and It updates the second configuration information and retransmits data.

Embodiment 2:

Terminal receives the second configuration information, and when terminal has data to need to send, terminal determines the geographical location Y of oneself, Terminal receives downlink channel condition information reference signal according to the configuration information of downlink channel condition information reference signal CSI-RS2 CSI-RS2 determines channel state information vector H2, if the geographical location Y of terminal is less than or equal to 0.3 at a distance from the X of geographical location (distance for illustrating that terminal during this period of time moves is very short, it is believed that channel state information is not sent out in this period for rice Changing) or the inner product of channel state information vector H1 and H2 be more than or equal to and 0.97 (illustrate the current channel state information of terminal It is similar with the channel state information obtained before based on CSI-RS1), then terminal sends data using the first shared resource, if The geographical location Y of terminal, which is greater than 0.3 meter at a distance from the X of geographical location and is less than or equal to 1 meter, (illustrates that terminal is during this period of time moved Some distances are moved, it is believed that channel state information may change in this period, so terminal is needed to retransmit Detection reference signal allows the base station to obtain the corresponding space fingerprint of terminal) or the inner product of channel state information vector H1 and H2 be less than 0.97 and it is more than or equal to 0.9 and (illustrates that the current channel state information of terminal is believed with the channel status obtained before based on CSI-RS1 Some variations have occurred in breath), then terminal determines the second detection reference signal according to the second sounding reference signal resource aggregate information Resource determines the second sounding reference signal sequence according to the second sounding reference signal sequence aggregate information, and terminal is in the second detection The second sounding reference signal sequence is sent on reference signal resource, sends data using the second shared resource；If the ground of terminal Position Y is managed (to illustrate that terminal has during this period of time moved bigger distance greater than 1 meter at a distance from the X of geographical location, believe Than very fast, base station can not probably receive the data of terminal transmission by way of the fingerprint of space for channel state information variation) Or the inner product of channel state information vector H1 and H2 (illustrate the current channel state information of terminal and are based on before less than 0.9 Very big variation has occurred in the channel state information that CSI-RS1 is obtained, and base station can not probably pass through the side of space fingerprint Formula come receive terminal transmission data), then terminal selects frequency expansion sequence to spread data from frequency expansion sequence set, then Data are sent using third shared resource.Preferably, H1 and H2 is the vector of M*1 dimension, protenchyma the reason of this hypothesis The considerations of networked terminals are due to cost of implementation generally all only has a receiving antenna.

Embodiment 3:

Base station sends the second configuration information to terminal, and the second configuration information includes at least downlink channel condition information with reference to letter The configuration information of number CSI-RS2, the first shared resource information, the second shared resource information, the second shared resource corresponding second Sounding reference signal resource aggregate information and the second sounding reference signal sequence aggregate information, third shared resource information use Third shared resource sends frequency expansion sequence set information when data, collides too strong instruction information and sends resource information.It needs Bright, the purpose for configuring the second shared resource and third shared resource is if multiple terminals send data in the first shared resource The bigger upstream data for causing base station that can not be properly received each terminal transmission of interference is generated, then allows terminal logical It crosses the second shared resource, and/or third shared resource carries out data re-transmission, the number in the second shared resource and third shared resource It can be reduced according to the probability of collision.Preferably, the first sounding reference signal resource set is less than the second sounding reference signal resource collection It closes, the first sounding reference signal sequence set is total to less than the second sounding reference signal sequence set, the first shared resource and second It is equal to enjoy resource size, the purpose for the arrangement is that reducing multiple terminals by way of increasing resource as far as possible while using shared Cause multiple terminal space fingerprints more similar more by force due to channel relevancy when data occur for resource, causes base station can not be at Function receives the problem of data.

Embodiment 4:

Base station sends the second configuration information to terminal, and the second configuration information includes at least downlink channel condition information with reference to letter The configuration information of number CSI-RS2, the first shared resource information, the second shared resource information, the second shared resource corresponding second Sounding reference signal resource aggregate information and the second sounding reference signal sequence aggregate information, third shared resource information use Third shared resource sends frequency expansion sequence set information when data, collides too strong instruction information and sends resource information.It needs Bright, the purpose for configuring the second shared resource and third shared resource is if multiple terminals send data in the first shared resource The bigger upstream data for causing base station that can not be properly received each terminal transmission of interference is generated, then allows terminal logical It crosses the second shared resource, and/or third shared resource carries out data re-transmission, the number in the second shared resource and third shared resource It can be reduced according to the probability of collision.Preferably, the length N of frequency expansion sequence is more than or equal to 2*M, the original done so in frequency expansion sequence set Because being if base station can not can not be properly received in the first shared resource or the second shared resource by the space fingerprint that M*1 is tieed up The upstream data that multiple terminals are sent simultaneously, illustrates that the channel relevancy between terminal is very strong, needs longer frequency expansion sequence To solve the interference problem between user.

Embodiment 5:

Base station sends the second configuration information to terminal, and the second configuration information includes at least downlink channel condition information with reference to letter The configuration information of number CSI-RS2, the first shared resource information, the second shared resource information, the second shared resource corresponding second Sounding reference signal resource aggregate information and the second sounding reference signal sequence aggregate information, third shared resource information use Third shared resource sends frequency expansion sequence set information when data, collides too strong instruction information and sends resource information.It needs Bright, the purpose for configuring the second shared resource and third shared resource is if multiple terminals send data in the first shared resource The bigger upstream data for causing base station that can not be properly received each terminal transmission of interference is generated, then allows terminal logical It crosses the second shared resource, and/or third shared resource carries out data re-transmission, the number in the second shared resource and third shared resource It can be reduced according to the probability of collision.Preferably, the size of third shared resource is N times of the first shared resource size, is done so The reason is that terminal will send data in third shared resource in such a way that data are spread, so needing more shared moneys Source.

Embodiment 6:

Terminal receives the second configuration information, and when terminal has data to need to send, terminal determines the geographical location Y of oneself, Terminal receives downlink channel condition information reference signal according to the configuration information of downlink channel condition information reference signal CSI-RS2 CSI-RS2 determines channel state information vector H2, if the geographical location Y of terminal is less than or equal to 0.3 at a distance from the X of geographical location (distance for illustrating that terminal during this period of time moves is very short, it is believed that channel state information is not sent out in this period for rice Changing) or the inner product of channel state information vector H1 and H2 be more than or equal to and 0.97 (illustrate the current channel state information of terminal It is similar with the channel state information obtained before based on CSI-RS1), then terminal sends data using the first shared resource, if The geographical location Y of terminal, which is greater than 0.3 meter at a distance from the X of geographical location and is less than or equal to 1 meter, (illustrates that terminal is during this period of time moved Some distances are moved, it is believed that channel state information may change in this period, so terminal is needed to retransmit Detection reference signal allows the base station to obtain the corresponding space fingerprint of terminal) or the inner product of channel state information vector H1 and H2 be less than 0.97 and it is more than or equal to 0.9 and (illustrates that the current channel state information of terminal is believed with the channel status obtained before based on CSI-RS1 Some variations have occurred in breath), then terminal determines the second detection reference signal according to the second sounding reference signal resource aggregate information Resource determines the second sounding reference signal sequence according to the second sounding reference signal sequence aggregate information, and terminal is in the second detection The second sounding reference signal sequence is sent on reference signal resource, sends data using the second shared resource；If the ground of terminal Position Y is managed (to illustrate that terminal has during this period of time moved bigger distance greater than 1 meter at a distance from the X of geographical location, believe Than very fast, base station can not probably receive the data of terminal transmission by way of the fingerprint of space for channel state information variation) Or the inner product of channel state information vector H1 and H2 (illustrate the current channel state information of terminal and are based on before less than 0.9 Very big variation has occurred in the channel state information that CSI-RS1 is obtained, and base station can not probably pass through the side of space fingerprint Formula come receive terminal transmission data), then terminal selects frequency expansion sequence to spread data from frequency expansion sequence set, then Data are sent using third shared resource.Preferably, in data carried terminal identification information, reason for this is that base stations simultaneously Do not know in shared resource be which terminal on earth in photos and sending messages, so needing to carry specific terminal iidentification in data.

Embodiment 7:

Terminal receives the second configuration information, and when terminal has data to need to send, terminal determines the geographical location Y of oneself, Terminal receives downlink channel condition information reference signal according to the configuration information of downlink channel condition information reference signal CSI-RS2 CSI-RS2 determines channel state information vector H2, if the geographical location Y of terminal is less than or equal to 0.3 at a distance from the X of geographical location (distance for illustrating that terminal during this period of time moves is very short, it is believed that channel state information is not sent out in this period for rice Changing) or the inner product of channel state information vector H1 and H2 be more than or equal to and 0.97 (illustrate the current channel state information of terminal It is similar with the channel state information obtained before based on CSI-RS1), then terminal sends data using the first shared resource, if The geographical location Y of terminal, which is greater than 0.3 meter at a distance from the X of geographical location and is less than or equal to 1 meter, (illustrates that terminal is during this period of time moved Some distances are moved, it is believed that channel state information may change in this period, so terminal is needed to retransmit Detection reference signal allows the base station to obtain the corresponding space fingerprint of terminal) or the inner product of channel state information vector H1 and H2 be less than 0.97 and it is more than or equal to 0.9 and (illustrates that the current channel state information of terminal is believed with the channel status obtained before based on CSI-RS1 Some variations have occurred in breath), then terminal determines the second detection reference signal according to the second sounding reference signal resource aggregate information Resource determines the second sounding reference signal sequence according to the second sounding reference signal sequence aggregate information, and terminal is in the second detection The second sounding reference signal sequence is sent on reference signal resource, sends data using the second shared resource；If the ground of terminal Position Y is managed (to illustrate that terminal has during this period of time moved bigger distance greater than 1 meter at a distance from the X of geographical location, believe Than very fast, base station can not probably receive the data of terminal transmission by way of the fingerprint of space for channel state information variation) Or the inner product of channel state information vector H1 and H2 (illustrate the current channel state information of terminal and are based on before less than 0.9 Very big variation has occurred in the channel state information that CSI-RS1 is obtained, and base station can not probably pass through the side of space fingerprint Formula come receive terminal transmission data), then terminal selects frequency expansion sequence to spread data from frequency expansion sequence set, then Data are sent using third shared resource.Preferably, if terminal sends data using the first shared resource, base station is based on the One space fingerprint receives data；If terminal sends data using the second shared resource, base station is based on second space fingerprint and connects Data are received, second space fingerprint is obtained based on the second sounding reference signal sequence that base station receives, and reason for this is that work as When antenna number is more, the channel information in mutiple antennas is usually orthogonal, it is possible to be believed by these orthogonal channels It ceases (space fingerprint) and is sent to the data of base station to decode different terminals in shared resource, so that the usage amount of resource is reduced, The spectrum efficiency of lifting system.

Embodiment 8:

Terminal receives the second configuration information, and when terminal has data to need to send, terminal determines the geographical location Y of oneself, Terminal receives downlink channel condition information reference signal according to the configuration information of downlink channel condition information reference signal CSI-RS2 CSI-RS2 determines channel state information vector H2, if the geographical location Y of terminal is less than or equal to 0.3 at a distance from the X of geographical location (distance for illustrating that terminal during this period of time moves is very short, it is believed that channel state information is not sent out in this period for rice Changing) or the inner product of channel state information vector H1 and H2 be more than or equal to and 0.97 (illustrate the current channel state information of terminal It is similar with the channel state information obtained before based on CSI-RS1), then terminal sends data using the first shared resource, if The geographical location Y of terminal, which is greater than 0.3 meter at a distance from the X of geographical location and is less than or equal to 1 meter, (illustrates that terminal is during this period of time moved Some distances are moved, it is believed that channel state information may change in this period, so terminal is needed to retransmit Detection reference signal allows the base station to obtain the corresponding space fingerprint of terminal) or the inner product of channel state information vector H1 and H2 be less than 0.97 and it is more than or equal to 0.9 and (illustrates that the current channel state information of terminal is believed with the channel status obtained before based on CSI-RS1 Some variations have occurred in breath), then terminal determines the second detection reference signal according to the second sounding reference signal resource aggregate information Resource determines the second sounding reference signal sequence according to the second sounding reference signal sequence aggregate information, and terminal is in the second detection The second sounding reference signal sequence is sent on reference signal resource, sends data using the second shared resource；If the ground of terminal Position Y is managed (to illustrate that terminal has during this period of time moved bigger distance greater than 1 meter at a distance from the X of geographical location, believe Than very fast, base station can not probably receive the data of terminal transmission by way of the fingerprint of space for channel state information variation) Or the inner product of channel state information vector H1 and H2 (illustrate the current channel state information of terminal and are based on before less than 0.9 Very big variation has occurred in the channel state information that CSI-RS1 is obtained, and base station can not probably pass through the side of space fingerprint Formula come receive terminal transmission data), then terminal selects frequency expansion sequence to spread data from frequency expansion sequence set, then Data are sent using third shared resource.Preferably, downlink channel condition information reference signal CSI-RS2 is located in the time domain Before two shared resources, difference is no more than 2ms, the advantage of doing so is that allowing terminal accurately to be known when sending data as far as possible makes Whether channel is consistent with the channel obtained before based on CSI-RS1；Second sounding reference signal resource is located in the time domain Before second shared resource, difference is no more than 0.5ms, the advantage of doing so is that base station is allowed to obtain accurate second space fingerprint, Base station is helped to improve the probability of the successful data reception in the second shared resource.

Embodiment 9:

If terminal is using the reception successful information for not receiving base station feedback after third shared resource transmission data, this is said There may be multiple terminals sending data in bright shared resource, interference is very big, then terminal is too strong according to colliding Indicate that information sends resource information and sends the too strong instruction information of collision to base station, it is desirable to which base station is dropped by increasing more resources Collision possibility of the low user in shared resource, thus the spectrum efficiency of lifting system.Preferably, terminal is sent out using full power Send collision too strong instruction information, wherein the too strong instruction information of collision is the shared sequence of a multiple terminals, the benefit done so It is to send identical sequence on identical running time-frequency resource by one or more terminals as far as possible to allow base station to know shared It collides in resource, to update configuration information.

Embodiment 10:

Base station sends the first configuration information of update after receiving the too strong instruction information of collision and updates the second configuration information.It is excellent Selection of land updates the first sounding reference signal resource set configured in the first configuration information, the first sounding reference signal sequence collection Conjunction is all larger than the first sounding reference signal resource set configured in the first configuration information, the first sounding reference signal sequence collection Close, update the second configuration information in configure the second sounding reference signal resource set, the second sounding reference signal sequence set, Third shared resource, frequency expansion sequence set be all larger than the second sounding reference signal resource set configured in the second configuration information, Second sounding reference signal sequence set, third shared resource, frequency expansion sequence set, wherein update in the second configuration information In frequency expansion sequence set spreading sequence length be 2 times of spreading sequence length in the frequency expansion sequence set in the second configuration information with On, the advantage of doing so is that by the resource allocation of increase system, reduce multiple terminals when sending data in shared resource by In reason interfering with each other causes base station that can not be successfully decoded a possibility that.

The terminal receives the first configuration information of update of base station transmission and updates the second configuration information, according to update first Configuration information and the second configuration information of update retransmit data.

The specific embodiment of the above is better embodiment of the invention, is not limited with this of the invention specific Practical range, the scope of the present invention includes being not limited to present embodiment, all equal according to equivalence changes made by the present invention Within the scope of the present invention.

Claims

1. ranked data transmission method in a kind of narrowband Internet of Things, which comprises the steps of:

S1: base station sends the first configuration information and downlink channel condition information reference signal CSI-RS1 to positioned at geographical location X's Terminal, first configuration information include at least: the receiving antenna number information of the base station；

S2: the terminal receives first configuration information, is determined and is believed according to the downlink channel condition reference signal CSI-RS1 Channel state information vector H1；

S3: the base station sends the second configuration information to the terminal, and second configuration information includes: downlink channel condition letter Cease the configuration information of reference signal CSI-RS2, the first shared resource information, the second shared resource information, the described second shared money The corresponding second sounding reference signal resource aggregate information in source and the second sounding reference signal sequence aggregate information, the shared money of third Source information sends frequency expansion sequence set information when data using the third shared resource, collides too strong instruction information and sends Resource information；

S4: the terminal receives second configuration information, and when the terminal has data to need to send, the terminal is determined certainly Oneself current geographic position Y, the terminal are true according to the configuration information of the downlink channel condition information reference signal CSI-RS2 Determine channel state information vector H2, and is determined to send data side according to current geographic position Y or channel state information vector H2 Formula；

S5: terminal according to priority be the first shared resource, the second shared resource, the sequence of third shared resource send data, Until sending successfully, if the terminal does not receive the base station feedback after sending the data using third shared resource Successful information is received, then the terminal is believed according to the too strong instruction information transmission resource information transmission too strong instruction of collision is collided It ceases to base station；

S6: it after the base station receives the too strong instruction information of collision, sends to update the first configuration information and update second and match Confidence breath, the terminal retransmit data according to the first configuration information and the second configuration information of update is updated.

2. ranked data transmission method in narrowband Internet of Things according to claim 1, it is characterised in that: in step sl, If the receiving antenna number M is more than or equal to 128, first configuration information further includes the first detection reference signal money Source aggregate information and the first sounding reference signal sequence aggregate information；

In step s 2, if first configuration information includes the first sounding reference signal resource aggregate information and described First sounding reference signal sequence aggregate information, then the terminal is true according to the first sounding reference signal resource aggregate information Fixed first sounding reference signal resource set determines that the first detection is joined according to the first sounding reference signal sequence aggregate information Signal sequence set is examined, the terminal selects the first detection reference signal to provide from the first sounding reference signal resource set Source selects the first detection ginseng according to first sounding reference signal resource from the first sounding reference signal sequence set Signal sequence is examined, the terminal sends first sounding reference signal sequence on first sounding reference signal resource；

In step s3, the base station receives first sounding reference signal sequence that the terminal is sent, according to described the One sounding reference signal sequence determines the first space fingerprint；Second space fingerprint is determined according to the second sounding reference signal sequence.

3. ranked data transmission method in narrowband Internet of Things according to claim 2, it is characterised in that: in step s 4, If the geographical location Y of the terminal is less than or equal to 0.3 meter or the channel state information vector H1 at a distance from the X of geographical location Being more than or equal to 0.97 with the inner product of H2, then the terminal sends the data using the first shared resource, if the terminal Geographical location Y is greater than 0.3 meter at a distance from the X of geographical location and is less than or equal to 1 meter or channel state information the vector H1 and H2 Inner product less than 0.97 and be more than or equal to 0.9, then the terminal is true according to the second sounding reference signal resource aggregate information Fixed second sounding reference signal resource determines the second detection with reference to letter according to the second sounding reference signal sequence aggregate information Number sequence, the terminal send second sounding reference signal sequence on second sounding reference signal resource, use Second shared resource sends the data；If the geographical location Y of the terminal is greater than 1 meter at a distance from the X of geographical location Or the inner product of channel state information the vector H1 and H2 less than 0.9, then the terminal is selected from the frequency expansion sequence set Frequency expansion sequence spreads the data, then sends the data using the third shared resource.

4. ranked data transmission method in narrowband Internet of Things according to claim 2, it is characterised in that: in step s 6, It is described to update the first sounding reference signal resource set, the first sounding reference signal sequence set configured in the first configuration information It is all larger than the first sounding reference signal resource set configured in first configuration information, the first sounding reference signal sequence collection It closes, it is described to update the second sounding reference signal resource set configured in the second configuration information, the second sounding reference signal sequence Set, third shared resource, frequency expansion sequence set are all larger than the second detection reference signal configured in second configuration information Resource collection, the second sounding reference signal sequence set, third shared resource, frequency expansion sequence set, wherein described to update second Spreading sequence length is expanded in the frequency expansion sequence set in second configuration information in frequency expansion sequence set in configuration information The 2 times or more of frequency sequence length.

5. ranked data transmission method in narrowband Internet of Things according to claim 1-4, it is characterised in that: described H1 and H2 is the vector of M*1 dimension, and M is antenna number.

6. ranked data transmission method in narrowband Internet of Things according to claim 1-4, it is characterised in that: described First sounding reference signal resource set is less than the second sounding reference signal resource set, first detection reference signal Arrangement set is less than the second sounding reference signal sequence set, and first shared resource and second shared resource are big It is small equal.

7. ranked data transmission method in narrowband Internet of Things according to claim 1-4, it is characterised in that: described The length N of frequency expansion sequence is more than or equal to 2*M in frequency expansion sequence set, and M is antenna number, and the size of the third shared resource is N times of the first shared resource size.

8. ranked data transmission method in narrowband Internet of Things according to claim 1-4, it is characterised in that: described The identification information of the terminal is carried in data, it is described if the terminal sends data using first shared resource Base station is based on first space fingerprint and receives the data；If the terminal sends number using second shared resource According to then the base station is based on second space fingerprint and receives the data, and the second space fingerprint is based on the base station and receives Second sounding reference signal sequence obtain.

9. ranked data transmission method in narrowband Internet of Things according to claim 1-4, it is characterised in that: described Downlink channel condition information reference signal CSI-RS2 is located in the time domain before second shared resource, and difference is no more than 2ms；Second sounding reference signal resource is located in the time domain before second shared resource, and difference is no more than 0.5ms.

10. ranked data transmission method in narrowband Internet of Things according to claim 1-4, it is characterised in that: In step S5, the terminal sends the too strong instruction information of collision using full power, wherein the too strong instruction of collision Information is the shared sequence of a multiple terminals.