CN107241172A - A kind of data repeating method and access network equipment - Google Patents
A kind of data repeating method and access network equipment Download PDFInfo
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- CN107241172A CN107241172A CN201710582618.7A CN201710582618A CN107241172A CN 107241172 A CN107241172 A CN 107241172A CN 201710582618 A CN201710582618 A CN 201710582618A CN 107241172 A CN107241172 A CN 107241172A
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- noise ratio
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- transfer times
- terminal device
- iterative transfer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/189—Transmission or retransmission of more than one copy of a message
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment provides a kind of data repeating method and access network equipment, it is related to communication technical field, when solving that terminal device carries out data transmission under same covering grade in the prior art, the transmission of packet is carried out as a result of above-mentioned repetition transmission technology, therefore the repetition transmission that M times can be carried out within a repetition period causes data channel to be taken by substantial amounts of repetitive data packet, so as to cause propagation delay time higher, follow-up business is successfully accessed the problem of relatively low Consumer's Experience of rate is poor.This method includes, and obtains the signal to noise ratio of terminal device；According to signal to noise ratio, the iterative transfer times of packet in the repetition period are obtained.The embodiment of the present invention is used for the repetition transmission for simplifying packet.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of data repeating method and access network equipment.
Background technology
Cellular arrowband Internet of Things (English full name is based in the prior art：Narrow Band Internet of
Things, referred to as：NB-IoT it is) to be based on third generation partner program (3rd Generation Partnership
Project, referred to as：3GPP) Long Term Evolution (English full name：Long Term Evolution, referred to as：LTE) standard agreement evolution
Technology of Internet of things, be mainly directed towards middle low rate, depth covering, low-power consumption, the Internet of Things application scenarios connected greatly；Its network rack
Structure is as shown in Fig. 1-a, including user equipment (English full name：User Equipment, referred to as：UE), base station (English full name：
Evolved Node B, referred to as：ENodeB), 4G core networks (English full name：Evolved Packet Core, referred to as：
EPC), Internet of Things (English full name：Internet of Things, referred to as：IoT) platform and application server.
Provide NB-IoT than general packet radio service technology (English full name in 3GPP：General Packet Radio
Service, referred to as：GPRS) there is 20dB lifting in terms of covering, support three kinds of covering grades, three kinds of coverings as shown in Fig. 1-b
Grade is respectively：When the RSRP values that terminal device is measured are less than or equal to 144dbm, represent that present terminal equipment is in first
Covering grade；When the RSRP values that terminal device is measured are more than 144dbm and are less than or equal to 154dbm, represent that present terminal is set
It is standby to be in the second covering grade；When the RSRP values that terminal device is measured are more than 154dbm and are less than or equal to 164dbm, represent
Present terminal equipment is in the 3rd covering grade.It is descending to bring coverage enhancement by repeating transmission technology, it is up by repeating to pass
The mode of transferring technology lifting upstream power spectrum density brings coverage enhancement；Wherein, transmission technology is repeated to refer to a repetition week
Each subframe in phase carries out repeating transmission, and the iterative transfer times Z that a repetition period is equal to single subframe is multiplied by subframe
Number M；Exemplary, as shown in fig 1-c, the number that iterative transfer times Z is equal to subframe in 1, a repetition period is M, because
This need not carry out repeating transmission to subframe M；Further, as Fig. 1-d within the first repetition period comprising 3 subframes A, B and
C, Z repetition is carried out to A subframes and transmits, Z repetition transmission is carried out to B subframes and Z repetition of C subframes progress is passed successively
It is defeated；Comprising 5 subframes H, G, M, F and E within the second repetition period, Z times is carried out to H subframes successively and repeats transmission, G subframes is entered
Z repetition of row is transmitted, Z repetition transmission is carried out to M subframes, to Z repetition transmission of F subframes progress and Z weight of E subframes progress
Multiple transmission, the by that analogy Z repetition of each subframe progress within the N repetition periods is transmitted；When terminal device is in same covering
, can be to M as a result of above-mentioned repetition transmission technology, therefore within a repetition period when carrying out data transmission under grade
The repetition transmission that each subframe in subframe carries out Z times causes data channel to be taken by substantial amounts of repetitive data packet, so as to cause
Propagation delay time is higher, and it is poor that follow-up business is successfully accessed the relatively low Consumer's Experience of rate.
From the foregoing, when terminal device carries out data transmission under same covering grade in the prior art, due to using
Above-mentioned repetition transmission technology carries out the transmission of packet, therefore can be to each in M subframe within the repetition period
The repetition transmission that subframe carries out Z times causes data channel to be taken by substantial amounts of repetitive data packet, so that cause propagation delay time higher,
It is poor that follow-up business is successfully accessed the relatively low Consumer's Experience of rate.
The content of the invention
Embodiments of the invention provide a kind of data repeating method and access network equipment, solve terminal in the prior art and set
For when carrying out data transmission under same covering grade, the biography of packet is carried out as a result of above-mentioned repetition transmission technology
It is defeated, thus within a repetition period can in M subframe each subframe carry out Z time repetition transmit cause data channel quilt
Substantial amounts of repetitive data packet takes, so as to cause propagation delay time higher, it is poor that follow-up business is successfully accessed the relatively low Consumer's Experience of rate
The problem of.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
First aspect, embodiments of the invention provide a kind of data repeating method, including：Obtain the noise of terminal device
Than；According to signal to noise ratio, the iterative transfer times of packet in the repetition period are obtained.
Optionally, this method also includes：The control instruction for carrying iterative transfer times is sent to terminal device.
Optionally, this method also includes：Packet is sent according to iterative transfer times.
Optionally, according to signal to noise ratio, the iterative transfer times of packet include in the generation repetition period：When terminal device
When signal to noise ratio is equal to default signal to noise ratio, iterative transfer times are set to zero.
Optionally, according to signal to noise ratio, the iterative transfer times of packet include in the generation repetition period：When terminal device
When signal to noise ratio is less than default signal to noise ratio, the difference of the signal to noise ratio of computing terminal equipment and default signal to noise ratio；Searched and increased according to difference
Benefit set, determines iterative transfer times；Wherein, gain sets are interval with multiple iterative transfer times comprising multiple signal to noise ratio, often
Individual signal to noise ratio interval one iterative transfer times of correspondence.
Optionally, gain sets are searched according to difference, determining the iterative transfer times of packet in the repetition period includes：Look into
Look for the signal to noise ratio corresponding to difference interval, and iterative transfer times are determined according to signal to noise ratio interval.
Second aspect, embodiments of the invention provide a kind of access network equipment, including：Data capture unit, for obtaining
The signal to noise ratio of terminal device；Data processing unit, for the signal to noise ratio obtained according to data capture unit, in the generation repetition period
The iterative transfer times of packet.
Optionally, data processing unit, is additionally operable to send the control instruction for carrying iterative transfer times to terminal device.
Optionally, data processing unit, is additionally operable to send downlink data packet according to iterative transfer times.
Optionally, data processing unit, specifically for being equal to when the signal to noise ratio for the terminal device that data capture unit is obtained
During default signal to noise ratio, iterative transfer times are set to zero.
Optionally, data processing unit, specifically for being less than when the signal to noise ratio for the terminal device that data capture unit is obtained
During default signal to noise ratio, the difference of the signal to noise ratio of computing terminal equipment and default signal to noise ratio；Gain sets are searched according to difference, it is determined that
Iterative transfer times；Wherein, gain sets are interval with multiple iterative transfer times comprising multiple signal to noise ratio, and each signal to noise ratio is interval
One iterative transfer times of correspondence.
Optionally, data processing unit, specifically for searching the signal to noise ratio interval corresponding to difference, and according to signal to noise ratio area
Between determine iterative transfer times.
Data repeating method and access network equipment provided in an embodiment of the present invention, by the noise for obtaining the terminal device
Than, and according to the iterative transfer times of packet in the signal to noise ratio generation repetition period, without same according to being located in the prior art
Terminal device under covering grade, the biography of packet is carried out when carrying out data transmission using identical iterative transfer times
It is defeated；So as to when solving that terminal device carries out data transmission under same covering grade in the prior art, as a result of above-mentioned
Repetition transmission technology carry out the transmission of packet, therefore each subframe in M subframe can be entered within a repetition period
The repetition transmission that row is Z times causes data channel to be taken by substantial amounts of repetitive data packet, so that cause propagation delay time higher, follow-up industry
Business is successfully accessed the problem of relatively low Consumer's Experience of rate is poor.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1-a- Fig. 1-d are the technical schematic diagram of NB-IoT in the prior art；
A kind of schematic flow sheet for data repeating method that Fig. 2-a provide for embodiments of the invention；
A kind of signal to noise ratio interval for data repeating method that Fig. 2-b provide for embodiments of the invention and iterative transfer times
Mapping table；
A kind of another schematic flow sheet for data repeating method that Fig. 3-a and Fig. 3-b provide for embodiments of the invention；
A kind of another schematic flow sheet for data repeating method that Fig. 4-a and Fig. 4-b provide for embodiments of the invention；
A kind of structural representation for access network equipment that Fig. 5 provides for embodiments of the invention.
Reference：
Access network equipment -10；
Data capture unit -101；Data processing unit -102.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In embodiments of the present invention, word " exemplary " or " such as " makees example, illustration or explanation for expression.This
Any embodiment or design for being described as " exemplary " or " such as " in inventive embodiments are not necessarily to be construed as ratio
Other embodiments or design more preferably or more advantage.Specifically, word purport using " exemplary " or " such as "
Related notion is being presented in a concrete fashion.
The executive agent of data repeating method provided in an embodiment of the present invention can be access network equipment, or access network
A performs device in equipment.Specifically, the access network equipment can be base station or evolved base station (English full name：
Evolved Node B, referred to as：ENodeB) etc..In the description of the invention, signal to noise ratio (the English full name of terminal device is obtained：
Signal Noise Ratio, referred to as：SNR in the following manner) is included：
Mode one, terminal device instruct the current signal to noise ratio of measurement according to current signal, then upload signal to noise ratio to connecing
Log equipment.
Mode two, terminal device can periodically be uploaded according to communication protocol current parameter information (including：Signal to noise ratio),
I.e. terminal device reports signal to noise ratio to access network equipment.
Embodiment one, embodiments of the invention provide a kind of data repeating method, include as shown in Fig. 2-a：
S101, the signal to noise ratio for obtaining terminal device.
S102, according to signal to noise ratio, obtain the iterative transfer times of packet in the repetition period.
Optionally, according to signal to noise ratio, the iterative transfer times of packet include in the generation repetition period：When terminal device
When signal to noise ratio is equal to default signal to noise ratio, iterative transfer times are set to zero.
It should be noted that in actual application, default signal to noise ratio snr-DRepresent the theory of terminal device position
Signal to noise ratio, the threshold value started can also be set according to actual situation and discriminates whether to need to change current iterative transfer times；
The signal to noise ratio snr of terminal device-RThe Signal-to-Noise of terminal position is represented, due to the terminal device in actual application
Signal to noise ratio snr-RDetermined by many environmental factors, therefore need exist for adding signal to noise ratio surplus L, L more than or equal to 0, i.e.,
The signal to noise ratio of terminal device is equal to SNR-R+ L so that the signal to noise ratio of the terminal device of measurement is more accurate；Exemplary, terminal
When the signal to noise ratio of equipment is equal to default signal to noise ratio, i.e. (SNR-R+L)-SNR-DEqual to 0, without carrying out repeating the i.e. achievable solution of transmission
Adjust.
Optionally, according to signal to noise ratio, the iterative transfer times of packet include in the generation repetition period：When terminal device
When signal to noise ratio is less than default signal to noise ratio, the difference of the signal to noise ratio of computing terminal equipment and default signal to noise ratio；Searched and increased according to difference
Benefit set, determines iterative transfer times；Wherein, gain sets are interval with multiple iterative transfer times comprising multiple signal to noise ratio, often
Individual signal to noise ratio interval one iterative transfer times of correspondence.
Optionally, gain sets are searched according to difference, determining the iterative transfer times of packet in the repetition period includes：Look into
Look for the signal to noise ratio corresponding to difference interval, and iterative transfer times are determined according to signal to noise ratio interval.
Need, the interval gain collection with multiple iterative transfer times of multiple signal to noise ratio is included in actual application
Closing can be set according to actual situation；Signal to noise ratio interval ANCorresponding relation with iterative transfer times as shown in Fig. 2-b,
Signal to noise ratio interval ANExpression formula be (3 × log22N-1, 3 × log22N], N ∈ (1,11) and N are integer；Gain sets bag
Contain：A1、A2、…..AN-1、AN；Wherein, A1Represent (0,3], A2Represent (3,6], A3Represent (3,9], ANRepresent (3 × log22N-1, 3
×log22N], number of retransmissions M is equal toExemplary, the signal to noise ratio of terminal device and default letter
Make an uproar than difference △ SNR be equal to (SNR-R+L)-SNR-D, because the signal to noise ratio of terminal device is less than default signal to noise ratio, represent current
Signal quality has gap with target demodulation SNR；It is exemplary, when △ SNR are equal to 2.5, fall in interval A due to 2.51(i.e.
(0,3] interval in, N=1), according to number of retransmissions M calculation formula understand M be equal to 1+1, i.e. number of retransmissions be 2.
Data repeating method provided in an embodiment of the present invention, by obtaining the signal to noise ratio of the terminal device, and according to letter
Make an uproar than generation the repetition period in packet iterative transfer times, without according in the prior art be located at same covering grade under
Terminal device, the transmission of packet is carried out when carrying out data transmission using identical iterative transfer times；So as to solve
When terminal device carries out data transmission under same covering grade in the prior art, as a result of above-mentioned repetition transmission technology
The transmission of packet is carried out, therefore meeting carries out the repetition transmission of Z times to each subframe in M subframe within a repetition period
Cause data channel to be taken by substantial amounts of repetitive data packet, so as to cause propagation delay time higher, follow-up business be successfully accessed rate compared with
The problem of low Consumer's Experience is poor.
Embodiment two, a kind of data repeating method of embodiments of the invention offer, such as Fig. 3-a, Fig. 3-b, Fig. 4-a and Fig. 4-
Concrete implementation mode shown in b is as follows：
Scene one, embodiments of the invention provide a kind of data repeating method, include as shown in Fig. 3-a：
S1010, transmission measurement current signal instruction.
S1020, according to measurement current signal instruction, measure current signal to noise ratio.
S1030, upload signal to noise ratio.
The signal to noise ratio that S1040, acquisition terminal device are reported.
S1050, according to signal to noise ratio, obtain the iterative transfer times of packet in the repetition period.
S1060, by carry iterative transfer times control instruction send to terminal device.
S1070, according to iterative transfer times send packet.
It should be noted that in actual application, step S1030 is primarily to notify terminal device currently to make
Which type of iterative transfer times Z to carry out the uplink of packet with；Because Fig. 3-a and Fig. 3-b are that user's progress is up
Transmission, distinctive points are acquisition modes (the acquisition signal to noise ratio of Fig. 3-a employing modes one, the acquisition letter of Fig. 3-b employing modes two of signal to noise ratio
Make an uproar ratio)；Therefore, Fig. 3-a and Fig. 3-b are consistent being subsequently generated the processes of iterative transfer times, and here is omitted.
Exemplary, situation 1：Centre bit of the terminal device from the marginal position of base station coverage area to base station coverage area
Movement is put, situations below is specifically included：User moves from the 3rd covering grade to the second covering grade, user from second covering etc.
Level is covered to the movement of the first covering grade, a lateral distance second of the user from the 3rd the second covering grade of covering grade distance farther out
The side movement of lid nearer grade, a lateral distance first of the user from second the first covering grade of covering grade distance farther out are covered
The side movement of lid nearer grade or user one lateral first are covered from first the second covering grade of covering grade distance is nearer
The variation tendency of iterative transfer times is identical during the center movement of lid grade, and concrete implementation mode is as follows：
When terminal device is located at the marginal position of access network equipment overlay area, the terminal that now access network equipment is obtained
The noise of equipment is smaller, and the possibility for occurring data-bag lost is larger；Therefore, now access network equipment according to terminal device
Signal to noise ratio, can obtain a larger iterative transfer times, and the control instruction for carrying the iterative transfer times was sent to end
End equipment；Terminal device carries out transmitting uplink data according to the iterative transfer times, so as to ensure that terminal device in access network
Sent at the marginal position of equipment overlay area to the integrality of the packet of access network equipment.
When terminal device is located at the center of base station coverage area, the terminal device that now access network equipment is obtained
Signal to noise ratio is larger, and the possibility for occurring data-bag lost is smaller；Therefore, now access network equipment according to the noise of terminal device
Than a less iterative transfer times can be distributed, and the control instruction for carrying the iterative transfer times is sent to terminal set
It is standby；Terminal device carries out transmitting uplink data according to the iterative transfer times, so as to ensure that terminal device in access network equipment
The center position of overlay area is sent to the integrality of the packet of access network equipment.
In summary, when terminal device is moved from the marginal position of base station coverage area to the center of base station coverage area
When dynamic, the variation tendency for the iterative transfer times that access network equipment is obtained is：By tapering into greatly.
Situation 2：Marginal position movement of the terminal device from the center of base station coverage area to base station coverage area, tool
Body includes situations below：User moves from the first covering grade to the second covering grade, user is from the second covering grade to the 3rd
Covering grade movement, user from the center of the first covering grade to the covering grade of distance second it is nearer one lateral movement when, use
Family from nearer first covering grade of lateral distance of second the first covering grade of covering grade distance farther out side movement or
A sidesway of the person user from nearer second covering grade of lateral distance of the 3rd the second covering grade of covering grade distance farther out
When dynamic, the change of iterative transfer times is as follows：
When terminal device is located at the center of base station coverage area, the terminal device that now access network equipment is obtained
Signal to noise ratio is larger, and the possibility for occurring data-bag lost is smaller；Therefore, now access network equipment according to the noise of terminal device
Than a less iterative transfer times can be distributed, and the control instruction for carrying the iterative transfer times is sent to terminal set
It is standby；Terminal device carries out transmitting uplink data according to the iterative transfer times, so as to ensure that terminal device in access network equipment
The center position of overlay area is sent to the integrality of the packet of access network equipment.
When terminal device is located at the marginal position of base station coverage area, the terminal device that now access network equipment is obtained
Noise is smaller, and the possibility for occurring data-bag lost is larger；Therefore, now access network equipment according to the noise of terminal device
Than a larger iterative transfer times can be obtained, and the control instruction for carrying the iterative transfer times is sent to terminal set
It is standby；Terminal device carries out transmitting uplink data according to the iterative transfer times, so as to ensure that terminal device in access network equipment
Sent at the marginal position of overlay area to the integrality of the packet of access network equipment.
In summary, when terminal device is moved from the marginal position of base station coverage area to the center of base station coverage area
When dynamic, the variation tendency for the iterative transfer times that access network equipment is obtained is：Become larger by small.
Data repeating method provided in an embodiment of the present invention, by obtaining the signal to noise ratio of the terminal device, and according to letter
Make an uproar than generation the repetition period in packet iterative transfer times, without according in the prior art be located at same covering grade under
Terminal device, the transmission of packet is carried out when carrying out data transmission using identical iterative transfer times；So as to solve
When terminal device carries out data transmission under same covering grade in the prior art, as a result of above-mentioned repetition transmission technology
The transmission of packet is carried out, therefore meeting carries out the repetition transmission of Z times to each subframe in M subframe within a repetition period
Cause data channel to be taken by substantial amounts of repetitive data packet, so as to cause propagation delay time higher, follow-up business be successfully accessed rate compared with
The problem of low Consumer's Experience is poor.
Scene two, embodiments of the invention provide a kind of data repeating method, include as depicted in fig. 4-a：
S1012, transmission measurement current signal instruction.
S1022, according to measurement current signal instruction, measure current signal to noise ratio.
S1032, upload signal to noise ratio.
The signal to noise ratio that S1042, acquisition terminal device are reported.
S1052, according to signal to noise ratio, obtain the iterative transfer times of packet in the repetition period.
S1062, according to iterative transfer times send packet.
It should be noted that in actual application, step S1031 is primarily to ensure the number that terminal device is received
According to the integrality of bag, it is therefore desirable to send packet according to iterative transfer times；Because Fig. 4-a and Fig. 4-b are user's progress
Uplink, distinctive points are that (Fig. 4-a employing modes one obtain signal to noise ratio, and Fig. 4-b employing modes two obtain for the acquisition modes of signal to noise ratio
Take signal to noise ratio)；Therefore, Fig. 4-a and Fig. 4-b are consistent being subsequently generated the processes of iterative transfer times, and here is omitted.
Exemplary, terminal device is moved from the marginal position of base station coverage area to the center of base station coverage area
It is dynamic, specifically include situations below：User moves from the 3rd covering grade to the second covering grade, user from the second covering grade to
A lateral distance second covering of the movement of first covering grade, user from the 3rd the second covering grade of covering grade distance farther out etc.
The nearer side movement of level, a lateral distance first covering of user from second the first covering grade of covering grade distance farther out etc.
The nearer side movement of level or user are from nearer lateral first covering of first the second covering grade of covering grade distance etc.
The variation tendency of iterative transfer times is identical during the center movement of level, and concrete implementation mode is as follows：
When terminal device is located at the marginal position of base station coverage area, the terminal device that now access network equipment is obtained
Noise is smaller, and the possibility for occurring data-bag lost is larger；Therefore, now access network equipment according to the noise of terminal device
Than a larger iterative transfer times can be obtained；Then downstream service is provided for terminal device according to the iterative transfer times,
Ensure the integrality for the packet that terminal device is received at remote position.
When terminal device is located at the center of base station coverage area, the terminal device that now access network equipment is obtained
Signal to noise ratio is larger, and the possibility for occurring data-bag lost is smaller；Therefore, now access network equipment according to the noise of terminal device
Than a less iterative transfer times can be obtained；Then downstream service is provided for terminal device according to the iterative transfer times,
Ensure the integrality for the packet that terminal device is received at nearer position.
In summary, when terminal device is moved from the marginal position of base station coverage area to the center of base station coverage area
When dynamic, the variation tendency for the iterative transfer times that access network equipment is obtained is：By tapering into greatly.
Situation 2：Marginal position movement of the terminal device from the center of base station coverage area to base station coverage area, tool
Body includes situations below：User moves from the first covering grade to the second covering grade, user is from the second covering grade to the 3rd
Covering grade movement, user from the center of the first covering grade to the covering grade of distance second it is nearer one lateral movement when, use
Family from nearer first covering grade of lateral distance of second the first covering grade of covering grade distance farther out side movement or
A sidesway of the person user from nearer second covering grade of lateral distance of the 3rd the second covering grade of covering grade distance farther out
When dynamic, the change of iterative transfer times is as follows：
When terminal device is located at the center of base station coverage area, the terminal device that now access network equipment is obtained
Signal to noise ratio is larger, and the possibility for occurring data-bag lost is smaller；Therefore, now access network equipment according to the noise of terminal device
Than a less iterative transfer times can be obtained；Then downstream service is provided for terminal device according to the iterative transfer times,
Ensure the integrality for the packet that terminal device is received at nearer position.
When terminal device is located at the marginal position of base station coverage area, the terminal device that now access network equipment is obtained
Noise is smaller, and the possibility for occurring data-bag lost is larger；Therefore, now access network equipment according to the noise of terminal device
Than a larger iterative transfer times can be obtained；Then downstream service is provided for terminal device according to the iterative transfer times,
Ensure the integrality for the packet that terminal device is received at remote position.
In summary, when terminal device is moved from the marginal position of base station coverage area to the center of base station coverage area
When dynamic, the variation tendency for the iterative transfer times that access network equipment is obtained is：Become larger by small.
Data repeating method provided in an embodiment of the present invention, by obtaining the signal to noise ratio of the terminal device, and according to letter
Make an uproar than generation the repetition period in packet iterative transfer times, without according in the prior art be located at same covering grade under
Terminal device, the transmission of packet is carried out when carrying out data transmission using identical iterative transfer times；So as to solve
When terminal device carries out data transmission under same covering grade in the prior art, as a result of above-mentioned repetition transmission technology
The transmission of packet is carried out, therefore meeting carries out the repetition transmission of Z times to each subframe in M subframe within a repetition period
Cause data channel to be taken by substantial amounts of repetitive data packet, so as to cause propagation delay time higher, follow-up business be successfully accessed rate compared with
The problem of low Consumer's Experience is poor.
Embodiment three, embodiments of the invention provide a kind of access network equipment 10, include as shown in Figure 5：
Data capture unit 101, the signal to noise ratio for obtaining terminal device.
Data processing unit 102, for the signal to noise ratio obtained according to data capture unit 101, number in the generation repetition period
According to the iterative transfer times of bag.
Optionally, data processing unit, is additionally operable to send the control instruction for carrying iterative transfer times to terminal device.
Optionally, data processing unit, is additionally operable to send downlink data packet according to iterative transfer times.
Optionally, data processing unit, specifically for being equal to when the signal to noise ratio for the terminal device that data capture unit is obtained
During default signal to noise ratio, iterative transfer times are set to zero.
Optionally, data processing unit, specifically for being less than when the signal to noise ratio for the terminal device that data capture unit is obtained
During default signal to noise ratio, the difference of the signal to noise ratio of computing terminal equipment and default signal to noise ratio；Gain sets are searched according to difference, it is determined that
Iterative transfer times；Wherein, gain sets are interval with multiple iterative transfer times comprising multiple signal to noise ratio, and each signal to noise ratio is interval
One iterative transfer times of correspondence.
Optionally, data processing unit, specifically for searching the signal to noise ratio interval corresponding to difference, and according to signal to noise ratio area
Between determine iterative transfer times.
Access network equipment provided in an embodiment of the present invention, by obtaining the signal to noise ratio of the terminal device, and according to noise
Than the iterative transfer times of packet in the generation repetition period, without according to the end being located in the prior art under same covering grade
End equipment, the transmission of packet is carried out when carrying out data transmission using identical iterative transfer times；It is existing so as to solve
When having that terminal device carries out data transmission under same covering grade in technology, enter as a result of above-mentioned repetition transmission technology
The transmission of row packet, thus within a repetition period can in M subframe each subframe carry out Z time repetition transmit make
Taken into data channel by substantial amounts of repetitive data packet, so as to cause propagation delay time higher, it is relatively low that follow-up business is successfully accessed rate
The problem of Consumer's Experience is poor.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (12)
1. a kind of data repeating method, it is characterised in that including：
Obtain the signal to noise ratio of terminal device；
According to the signal to noise ratio, the iterative transfer times of packet in the repetition period are obtained.
2. data repeating method according to claim 1, it is characterised in that methods described also includes：
The control instruction for carrying the iterative transfer times is sent to the terminal device.
3. data repeating method according to claim 1, it is characterised in that methods described also includes：
Packet is sent according to the iterative transfer times.
4. the data repeating method according to Claims 2 or 3, it is characterised in that according to the signal to noise ratio, generation repeats week
The iterative transfer times of packet include in phase：
When the signal to noise ratio of the terminal device is equal to default signal to noise ratio, iterative transfer times are set to zero.
5. the data repeating method according to Claims 2 or 3, it is characterised in that according to the signal to noise ratio, generation repeats week
The iterative transfer times of packet include in phase：
When the signal to noise ratio of the terminal device is less than default signal to noise ratio, the signal to noise ratio for calculating the terminal device is preset with described
The difference of signal to noise ratio；
Gain sets are searched according to the difference, iterative transfer times are determined；Wherein, the gain sets include multiple signal to noise ratio
Interval and multiple iterative transfer times, each signal to noise ratio interval one iterative transfer times of correspondence.
6. data repeating method according to claim 5, it is characterised in that gain sets are searched according to the difference, really
Determining the iterative transfer times of packet in the repetition period includes：
The signal to noise ratio searched corresponding to the difference is interval, and determines iterative transfer times according to signal to noise ratio interval.
7. a kind of access network equipment, it is characterised in that including：
Data capture unit, the signal to noise ratio for obtaining terminal device；
Data processing unit, for the signal to noise ratio obtained according to the data capture unit, data in the generation repetition period
The iterative transfer times of bag.
8. access network equipment according to claim 7, it is characterised in that the data processing unit, is additionally operable to carry
The control instruction of the iterative transfer times is sent to the terminal device.
9. access network equipment according to claim 7, it is characterised in that the data processing unit, is additionally operable to according to institute
State iterative transfer times and send downlink data packet.
10. access network equipment according to claim 8 or claim 9, it is characterised in that the data processing unit, specifically for
When the signal to noise ratio for the terminal device that the data capture unit is obtained is equal to default signal to noise ratio, iterative transfer times are set
It is set to zero.
11. access network equipment according to claim 8 or claim 9, it is characterised in that the data processing unit, specifically for
When the signal to noise ratio for the terminal device that the data capture unit is obtained is less than default signal to noise ratio, the terminal device is calculated
Signal to noise ratio and the default signal to noise ratio difference；Gain sets are searched according to the difference, iterative transfer times are determined；Its
In, the gain sets are interval with multiple iterative transfer times comprising multiple signal to noise ratio, each signal to noise ratio interval correspondence one
The individual iterative transfer times.
12. access network equipment according to claim 11, it is characterised in that the data processing unit, specifically for looking into
Look for the signal to noise ratio corresponding to the difference interval, and iterative transfer times are determined according to signal to noise ratio interval.
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| CN107241172B (en) | 2019-11-26 |
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