CN108923890A - A kind of data transmission method, user equipment, base station and system - Google Patents
A kind of data transmission method, user equipment, base station and system Download PDFInfo
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- CN108923890A CN108923890A CN201810785285.2A CN201810785285A CN108923890A CN 108923890 A CN108923890 A CN 108923890A CN 201810785285 A CN201810785285 A CN 201810785285A CN 108923890 A CN108923890 A CN 108923890A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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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
- H04L1/1607—Details of the supervisory signal
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Abstract
The present invention provides a kind of data transmission method, user equipment, base station and system, the method includes：User equipment (UE) sends upstream data to base station, and upstream data carries UE mark id and resource information, wherein resource information includes the resource pool information in the first resource pond that UE is selected from preset multiple resource pools according to current modulation and coding MCS value.If UE receives the feedback information of base station transmission within a preset time, judge whether feedback information is negative confirmation nack message.If feedback information is nack message, judge instruction information whether is carried in nack message, it is crowded that instruction information is used to indicate first resource pond.If first resource pond is crowded, UE selects Secondary resource pond, and retransmits upstream data on Secondary resource pond.In method provided by the invention, when multiple UE select resource pool send upstream data when, can effectively avoid resource pool selection conflict, improve the reliability of transmitting uplink data.
Description
Technical field
The present invention relates to technical field of data transmission, in particular to a kind of data transmission method, user equipment, base station and it is
System.
Background technique
Currently, extensive Internet of Things, the mobile broadband in 5G communication enhance and the three major businesses of low time delay high reliable communication
In scene, all there is transmitting small data packets business.Have data packet small based on transmitting small data packets and business burst waits by force spies
Sign, existing be often used exempt from the transmission that scheduled transmission modes realize small data packets.
Exempting from scheduled transmission is a kind of data with to the transmission mode with hair.User equipment (User Equipment, UE) to
Base station sends data, and data are sent at nearest time point immediately after reaching base station, does not need UE and sends scheduling request
(Scheduling Request, SR) and wait base station authorization scheduling.When UE has transmitting uplink data demand, without dynamic from base station
State obtains scheduling information, can be directly in the transmission for exempting to dispatch progress upstream data on resource pool.But the above method is due to lacking
Weary dynamic scheduling information instruction, multiple UE may be existed in this way using the identical transmission for exempting to dispatch resource pool progress upstream data
During carrying out data transmission, the probability that resource pool collision occurs be will increase, and transmission reliability is caused to reduce.
Summary of the invention
In view of this, the present invention provides a kind of data transmission method, user equipment, base station and system, to solve existing length
In phase evolution (Long Term Evolution, LTE) system, multiple UE are when transmitting upstream data, it is therefore possible to use identical to exempt from
The problem of probability dispatched resource pool and resource pool is caused to collide increases, and data transmission credibility is caused to reduce.
To achieve the above object, it is proposed that scheme it is as follows：
First aspect present invention discloses a kind of data transmission method, including：
User equipment (UE) sends upstream data to base station, and the upstream data carries UE mark id and resource information, wherein
The resource information includes first that the UE is selected from preset multiple resource pools according to current modulation and coding MCS value
The resource pool information of resource pool；
If the UE receives the feedback information that the base station is sent within a preset time, judge the feedback information whether be
Negative confirmation nack message；
If the feedback information is the nack message, judge instruction information whether is carried in the nack message, it is described
It is crowded that instruction information is used to indicate the first resource pond；
If the first resource pond is crowded, the UE selects Secondary resource pond, and sends out again on the Secondary resource pond
Send the upstream data.
Preferably, if it is the value range of 0-1,2-9 that the MCS value, which presses the sequence that value range is arranged from low order to high-order,
Value range, the value range of 10-16, the value range of 17-27 and the value range greater than 27, each value range
A corresponding resource pool, the UE select the first resource from preset multiple resource pools according to the current MCS value
Pond, including：
The UE determines value range locating for the current MCS value, selects the corresponding resource pool of the value range
As the first resource pond.
Preferably, if the UE is not received by the feedback information within a preset time, alternatively, in the nack message
The instruction information is not carried, further includes：
The UE retransmits the upstream data on the first resource pond.
Preferably, the UE selects the process in the Secondary resource pond to include：
When the first resource pond is congestion state, the UE selection is than value range locating for the current MCS value
The corresponding resource pool of the value range of low single order transmits institute as the Secondary resource pond, and on the Secondary resource pond again
State upstream data；
Wherein, MCS value presses the value model that the sequence that value range is arranged from low order to high-order is the value range of 0-1,2-9
It encloses, the value range of 10-16, the value range of 17-27 and the value range greater than 27, each value range corresponding one provide
Source pond.
Second aspect of the present invention discloses a kind of data transmission method, including：
Base station receives the upstream data that user equipment (UE) is sent, and parses to the upstream data, obtains resource letter
Breath, wherein the resource information includes that the UE is selected from preset multiple resource pools according to current modulation and coding MCS value
Select the resource pool information in first resource pond；
Resources occupation rate information of the base station based on all preset resource pools counted in advance determines first money
The resources occupation rate in source pond；
The base station generates feedback information, sends the feedback information to the UE, the UE is made to be based on the feedback letter
Breath executes corresponding operating.
Preferably, the base station generates feedback information, sends the feedback information to the UE, including：
If the base station cannot be correctly decoded the upstream data, the base station generates negative confirmation nack message, sends
To the UE；
If the resources occupation rate in the first resource pond is more than predetermined threshold value t1, the base station, which generates, carries instruction letter
The nack message of breath is sent to the UE, and it is congestion state that the instruction information, which is used to indicate the first resource pond,；
If the base station can be correctly decoded the upstream data, and first resource pond occupation rate is no more than described pre-
Gating limit value t1, the base station generate confirmation ACK information, are sent to the UE.
Third aspect present invention discloses a kind of user equipment, including：
Transmission unit, for sending upstream data to base station, the upstream data carries user equipment (UE) mark id and money
Source information, wherein the resource information includes the UE according to current modulation and encodes MCS value from preset multiple resource pools
The resource pool information in middle selection first resource pond；
Receiving unit, the feedback information sent for receiving the base station；
First judging unit, for judging whether the receiving unit receives the feedback information within a preset time, if
The receiving unit receives the feedback information within a preset time, then executes second judgment unit；
The second judgment unit, for judging whether the feedback information is negative confirmation nack message, if described anti-
Feedforward information is the nack message, then executes third judging unit；
The third judging unit, for judging whether carry instruction information in the nack message, the instruction information
It is crowded to be used to indicate the first resource pond, if carrying the instruction information, executes the second selecting unit；
Second selecting unit, for when the first resource pond is crowded, selecting Secondary resource pond, the transmission is single
Member retransmits the upstream data on the Secondary resource pond.
Preferably, the user equipment further includes：
First selecting unit, for selecting described first from preset multiple resource pools according to the current MCS value
Resource pool, including：If the MCS value is the value range of 0-1,2-9 by the sequence that value range is arranged from low order to high-order
Value range, the value range of 10-16, the value range of 17-27 and the value range greater than 27, each value range pair
A resource pool is answered, the first selecting unit determines value range locating for the current MCS value, selects the value range
Corresponding resource pool is as the first resource pond.
Preferably, when the receiving unit is not received by the feedback information within a preset time, alternatively, the NACK
When in information without carrying the instruction information,
The transmission unit is also used to retransmit the upstream data on the first resource pond.
Preferably, second selecting unit,
Specifically for selecting than value locating for the current MCS value when the first resource pond is congestion state
The corresponding resource pool of value range of the low single order of range is as the Secondary resource pond, wherein MCS value presses value range from low order
The sequence arranged to high-order is value range, the value range of 2-9, the value range of 10-16, the value range of 17-27 of 0-1
With the value range for being greater than 27, each corresponding resource pool of the value range.
Fourth aspect present invention discloses a kind of base station, including：
Data receipt unit, for receiving the upstream data of user equipment (UE) transmission；
Resolution unit, the upstream data for sending to the UE parse, and obtain resource information, wherein the money
Source packet selects first resource pond according to current modulation and coding MCS value containing the UE from preset multiple resource pools
Resource pool information；
Statistic unit, for the resources occupation rate information based on all preset resource pools counted in advance, determine described in
The resources occupation rate in first resource pond；
Feedback unit sends the feedback information to the UE for generating feedback information, is based on the UE described anti-
Feedforward information executes corresponding operating.
Preferably, the feedback unit, including：
First feedback module, for it is true to generate negative when the resolution unit cannot be correctly decoded the upstream data
Recognize nack message, is sent to the UE；
Second feedback module when being more than predetermined threshold value t1 for the resources occupation rate in the first resource pond, generates
The nack message for carrying instruction information is sent to the UE, and it is to gather around that the instruction information, which is used to indicate the first resource pond,
The state of squeezing；
Third feedback module, if the upstream data, and first money can be correctly decoded for the resolution unit
When source pond occupation rate is no more than the predetermined threshold value t1, confirmation ACK information is generated, the UE is sent to.
Fifth aspect present invention discloses a kind of data transmission system, including：User disclosed in third aspect present invention sets
Base station disclosed in standby and fourth aspect present invention.
Based on the above-mentioned technical proposal it is found that a kind of data transmission method disclosed by the embodiments of the present invention, user equipment, base station
And system.Upstream data is sent to base station by UE, upstream data carries UE mark (identification, id) and resource letter
Breath, wherein resource information includes UE according to current modulation and coding (Modulation and Coding Scheme, MCS)
The resource pool information in the first resource pond that value is selected from preset multiple resource pools.If UE receives base station hair within a preset time
The feedback information sent judges whether feedback information is negative confirmation (Negative ACKnowledgement, NACK) information.If
Feedback information is nack message, judges instruction information whether is carried in nack message, and instruction information is used to indicate first resource pond
It is crowded.If first resource pond is crowded, UE selects Secondary resource pond, and retransmits upstream data on Secondary resource pond.It is based on
In scheme provided by the invention, when multiple UE select resource pool send upstream data when, can effectively avoid resource pool selection punching
It is prominent, improve the reliability of transmitting uplink data.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the configuration schematic diagram of default resource pool provided in an embodiment of the present invention；
Fig. 2 is a kind of data transmission method flow chart provided in an embodiment of the present invention；
Fig. 3 is a kind of structural block diagram of user equipment provided in an embodiment of the present invention；
Fig. 4 is a kind of structural block diagram of user equipment provided in an embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of base station provided in an embodiment of the present invention；
Fig. 6 is a kind of structural block diagram of base station provided in an embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of data transmission system provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In this application, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
By technical background it is found that exempting from scheduled transmission is a kind of data with to the transmission mode with hair.UE sends number to base station
According to data are sent at nearest time point immediately after reaching base station, are not needed UE and are sent SR and wait base station authorization scheduling.UE has
When transmitting uplink data demand, without can directly be carried out on exempting from scheduling resource pool from base station dynamic acquisition scheduling information
The transmission of row data.But the above method may exempt to dispatch due to lacking dynamic scheduling information instruction, multiple UE using identical
Resource pool carries out the transmission of upstream data, and in this way during carrying out data transmission, the probability that resource pool collision occurs can increase
Add, transmission reliability is caused to reduce.Therefore, in a kind of data transmission method disclosed by the embodiments of the present invention, user equipment, base station
And in system, UE selects suitable resource pool to transmit upstream data according to the occupation rate situation of resource pool, is avoided that multiple UE
When selecting resource pool, there is a situation where resource pool selections to collide, and improves the transmission reliability of upstream data.Especially by following
Embodiment is described in detail.
With reference to Fig. 1, the configuration schematic diagram of default resource pool provided in an embodiment of the present invention, the default resource pool are shown
According to the value range of MCS value from low order to being arranged as at high price：The corresponding resource pool 1 of the value range of 0-1, the value model of 2-9
Enclose corresponding resource pool 2, the corresponding resource pool 3 of the value range of 10-16, the corresponding resource pool 4 of the value range of 17-27, greatly
In the 27 corresponding resource pool 5 of value range, each corresponding resource pool of the value range.
It should be noted that the resource pool 1 to the resource pool 5 is cycle arrangement structure, even selection is than the money
The resource pool of the low single order in source pond 1, should select the resource pool 5.
With reference to Fig. 2, a kind of data transmission method flow chart provided in an embodiment of the present invention is shown, may include following step
Suddenly：
Step S201：UE sends upstream data to base station.
During implementing step S201, the upstream data carries UE id and resource information, wherein described
Resource information includes the resource pool in the first resource pond that the UE is selected from preset multiple resource pools according to current MCS value
Information.
It should be noted that wherein, the UE id can be the unique identification of UE, for example cell-radio network is temporarily marked
Know (Cell Radio Network Temporary Identities, C-RNTI).The resource information can be expressed as physics
The position of resource block (Physical Resource Block, PRB).
Preferably to illustrate the resource information, it is exemplified below：
Assuming that system broad is 20M, there are 100 PRB available resources, the resource information that the UE is carried is exactly this
The several continuous PRB of certain in 100 PRB.
Step S202：Base station receives the upstream data that UE is sent, and parses to the upstream data, obtains resource letter
Breath.
It should be noted that the resource information include the UE according to current MCS value from preset multiple resource pools
The resource pool information in middle selection first resource pond.Wherein, the first resource pond is the resource pool that the UE is currently selected.
Step S203：Resources occupation rate information of the base station based on all preset resource pools counted in advance determines
The resources occupation rate in the first resource pond.
During implementing step S203, when base station receives the upstream data when progress that the UE is sent
Blind Detecting, and count the occupation rate of each resource pool.The resource information can be expressed as Physical Resource Block (Physical
Resource Block, PRB) position, the information that base station counts each resource pool is expressed as, and counts every in the upstream data
The occupation rate of a PRB.
More preferably to illustrate the process that base station counts the occupation rate of each resource pool, it is exemplified below：
Assuming that system broad is 20M, there are 100 PRB available resources, the resource information that the UE is carried is exactly this
The several continuous PRB of certain in 100 PRB, and base station blind Detecting statistics be this 100 PRB each PRB occupation rate.
Step S204：The base station generates feedback information, sends the feedback information to the UE.
During implementing step S204, base station is different according to the parsing result to the upstream data received,
Generate different feedback informations.
Including：Nack message, alternatively, confirmation (Acknowledgement, ACK) information, alternatively, carrying instruction information
Nack message.
Optionally, if the base station cannot be correctly decoded the upstream data, the base station generates nack message, is sent to
The UE.
Optionally, if the resources occupation rate in the first resource pond is more than predetermined threshold value t1, the base station, which generates, to be carried
There is the nack message of instruction information, is sent to the UE, it is crowded shape that the instruction information, which is used to indicate the first resource pond,
State.
Optionally, if the base station can be correctly decoded the upstream data, and the resources occupation in the first resource pond
Rate is not above the predetermined threshold value t1, and the base station generates ACK information, is sent to the UE.
Step S205：Judge whether the UE receives the feedback information that the base station is sent within a preset time, if so,
Step S207 is executed, if it is not, thening follow the steps S206.
During implementing step S205, the UE is after sending the upstream data, and whithin a period of time one
Direct-open, the feedback message for waiting the base station to be received to send, this is the preset time for a period of time.Under normal conditions, should
Preset time can be configured according to the concrete condition of the UE, can also be set by technical staff according to specific requirement
It sets.
Step S206：The UE retransmits the upstream data on the first resource pond, returns to step
S202。
During implementing step S206, the UE does not receive what the base station was sent within the preset time
When feedback message, the UE retransmits the upstream data on the first resource pond in the resource pool currently selected.
Step S207：Judge whether the feedback information is nack message, if so, S208 is thened follow the steps, if it is not, then holding
Row step S209.
Step S208：Judge instruction information whether is carried in the nack message, if so, S210 is thened follow the steps, if it is not,
Then follow the steps S211.
During specific implementation step S208, it should be noted that the instruction information is used to indicate described first
Resource pool is congestion state.
Step S209：Terminate the transmission of this upstream data.
During implementing step S209, the feedback information that the UE is received is ACK information, indicates institute
It states upstream data to be sent completely, terminates the transmission of this upstream data.
Step S210：The UE selects Secondary resource pond, and the upper line number is retransmitted on the Secondary resource pond
According to returning to step S202.
It should be noted that during implementing step S210, when the first resource pond is congestion state,
The UE selects the Secondary resource pond as the resource pool currently selected, and on the Secondary resource pond described in retransmission
Upstream data.At this point, the Secondary resource pond becomes the resource pool that the UE is currently selected.
Step S211：The UE retransmits the upstream data on the first resource pond, returns to step
S202。
During implementing step S211, the NACK letter for indicating information is not carried when the UE is received
When breath, indicate that the upstream data fails to be correctly decoded by the base station, the UE is in the resource pool currently selected, i.e., described
The upstream data is retransmitted on first resource pond.
In the embodiment of the present invention, base station carries out blind Detecting when receiving the upstream data of UE transmission, counts all resources
The resources occupation rate information in pond generates feedback information and sends feedback information to UE, and UE is selected according to the occupation rate situation of resource pool
Appropriate resources pond is selected to transmit upstream data, is avoided that the feelings of resource pool selection collision occur when selecting resource pool for multiple UE
Condition improves the transmission reliability of upstream data.
Based on a kind of data transmission method flow chart disclosed in the embodiments of the present invention, in conjunction with default money shown in fig. 1
The specific implementation process of the configuration schematic diagram in source pond, the step S201 that embodiments of the present invention Fig. 2 is disclosed is：
The UE selects the first resource pond, packet from preset multiple resource pools according to the current MCS value
It includes：The UE determines value range locating for the current MCS value, selects the corresponding resource pool of the value range as institute
First resource pond is stated, and sends the upstream data on the first resource pond.
The configuration schematic diagram that resource pool is preset in conjunction with disclosed in embodiments of the present invention Fig. 1 is exemplified below described
How UE selects the first resource pond according to the current MCS value：
If the current MCS value, in the value range of 0-1, the UE selects money corresponding with the value range of 0-1
Source pond 1 is used as the first resource pond, and sends the upstream data on the first resource pond.
If the current MCS value, in the value range of 2-9, the UE selects money corresponding with the value range of 2-9
Source pond 2 is used as the first resource pond, and sends the upstream data on the first resource pond.
If the current MCS value, in the value range of 10-16, the UE selection is corresponding with the value range of 10-16
Resource pool 3 be used as the first resource pond, and send the upstream data on the first resource pond.
If the current MCS value, in the value range of 17-27, the UE selection is corresponding with the value range of 17-27
Resource pool 4 be used as the first resource pond, and send the upstream data on the first resource pond.
If the current MCS value is in the value range greater than 27, the value range pair UE selection and be greater than 27
The resource pool 5 answered is used as the first resource pond, and sends the upstream data on the first resource pond.
Based on a kind of data transmission method flow chart disclosed in the embodiments of the present invention, embodiments of the present invention Fig. 2
The specific implementation process of open step S210 is：
When the first resource pond is congestion state, the UE selection is than value model locating for the current MCS value
The corresponding resource pool of value range of low single order is enclosed to upload again as the Secondary resource pond, and on the Secondary resource pond
The upstream data.
Preferably to illustrate how UE described in step S210 selects the Secondary resource pond, below by process
(1)-(2) are illustrated：
(1) assume that the current MCS value is 6, in the value range in 2-9, be based on embodiments of the present invention Fig. 1
The configuration schematic diagram of disclosed default resource pool selects resource pool 2 for the first resource pond.When the first resource pond is gathered around
When squeezing, the UE selects the corresponding resource pool of value range of single order lower than value range locating for the current MCS value, i.e.,
The UE selects the corresponding resource pool 1 of the value range of 0-1 as the Secondary resource pond, and uploads in the Secondary resource pond
The defeated upstream data.
(2) assume that the current MCS value is 1, in the value range in 0-1, be based on embodiments of the present invention Fig. 1
The configuration schematic diagram of disclosed resource pool selects resource pool 1 for the first resource pond.When the first resource pond is crowded
When, the UE selects the corresponding resource pool of value range of single order lower than value range locating for the current MCS value, i.e. institute
It states UE and selects to be greater than the 27 corresponding resource pool 5 of value range as the Secondary resource pond, and on the Secondary resource pond
Transmit the upstream data.
In the embodiment of the present invention, base station carries out blind Detecting when receiving the upstream data of UE transmission, counts all resources
The resources occupation rate information in pond generates feedback information and sends feedback information to UE, and UE is selected according to the occupation rate situation of resource pool
Appropriate resources pond is selected to transmit upstream data, is avoided that the feelings of resource pool selection collision occur when selecting resource pool for multiple UE
Condition improves the transmission reliability of upstream data.
Based on a kind of data transmission method disclosed in the embodiments of the present invention, also correspondence of the embodiment of the present invention discloses one
Kind user equipment shows a kind of structural block diagram of user equipment provided in an embodiment of the present invention with reference to Fig. 3, including：
Transmission unit 301, for sending upstream data to base station, the upstream data carries UE id and resource information,
In, the resource information includes that the transmission unit selects the first money according to current MCS value from preset multiple resource pools
The resource pool information in source pond.
Receiving unit 302, the feedback information sent for receiving the base station.
First judging unit 303, for judging whether the receiving unit 302 receives the feedback letter within a preset time
Breath, if the receiving unit 302 receives the feedback information within a preset time, executes second judgment unit 304.
The second judgment unit 304, if receiving the feedback letter within a preset time for the receiving unit 302
Breath, judges whether the feedback information is nack message, if the feedback information is the nack message, executes third judgement
Unit 305.
The third judging unit 305 judges the nack message if being the nack message for the feedback information
In whether carry instruction information, it is crowded that the instruction information is used to indicate the first resource pond, if the nack message carries
The instruction information then executes the second selecting unit 306.
Second selecting unit 306, for selecting Secondary resource pond, the hair when the first resource pond is crowded
Unit 301 is sent to retransmit the upstream data on the Secondary resource pond.
Preferably, in conjunction with Fig. 3, with reference to Fig. 4, in a kind of user equipment provided in an embodiment of the present invention, further include：
First selecting unit 307, for selecting described from preset multiple resource pools according to the current MCS value
One resource pool.Wherein, the first selecting unit 307 selects the specific of the first resource pond from preset multiple resource pools
Process, the corresponding content of step S201 disclosed referring to embodiments of the present invention Fig. 2.
In conjunction with Fig. 4, it is preferred that the transmission unit 301 is also used to not have within a preset time when the receiving unit 302
The feedback information is received, alternatively, in the nack message when no carrying instruction information, in the first resource
The upstream data is retransmitted on pond.
In conjunction with Fig. 4, it is preferred that second selecting unit 306 is specifically used in the first resource pond being congestion state
When, select the corresponding resource pool of value range of single order lower than the value range of the current MCS value as second money
Source pond.Second selecting unit 306 selects the detailed process in the Secondary resource pond public referring to embodiments of the present invention Fig. 2
The corresponding content of step S210 opened.
Based on a kind of data transmission method disclosed in the embodiments of the present invention, also correspondence of the embodiment of the present invention discloses one
Kind base station shows a kind of structural block diagram of base station provided in an embodiment of the present invention with reference to Fig. 5, including：
Data receipt unit 501, for receiving the upstream data of UE transmission.
Resolution unit 502 obtains resource information, wherein the resource information for parsing to the upstream data
Select the resource pool information in first resource pond from preset multiple resource pools according to current MCS value comprising the UE.
Statistic unit 503 determines institute for the resources occupation rate information based on all preset resource pools counted in advance
The resources occupation rate in first resource pond is stated, detailed process is opposite referring to the step S203 that embodiments of the present invention Fig. 2 is disclosed
The content answered.
Feedback unit 504 sends the feedback information to the UE, the UE is made to be based on institute for generating feedback information
It states feedback information and executes corresponding operating.
Preferably, in conjunction with Fig. 5, with reference to Fig. 6, in a kind of base station provided in an embodiment of the present invention, feedback unit 504 includes：
First feedback module 5041, for generating when the resolution unit 502 cannot be correctly decoded the upstream data
Nack message is sent to the UE.
Second feedback module 5042, when being more than predetermined threshold value t1 for the resources occupation rate in the first resource pond,
The nack message for carrying instruction information is generated, is sent to the UE, the instruction information is used to indicate the first resource pond
For congestion state.
Third feedback module 5043, if the upstream data can be correctly decoded for the resolution unit 502, and described
First resource pond occupation rate is no more than the predetermined threshold value t1, generates ACK information, is sent to the UE.
In the embodiment of the present invention, base station is parsed when receiving the upstream data of UE transmission, counts all resource pools
Resources occupation rate information, generate feedback information simultaneously to UE send feedback information, UE according to the occupation rate situation of resource pool select
Upstream data is transmitted in appropriate resources pond, is avoided that there is a situation where resource pool selections to collide when selecting resource pool by multiple UE,
Improve the transmission reliability of upstream data.
Based on a kind of data transmission method, user equipment and base station disclosed in the embodiments of the present invention, the present invention is implemented
Example also correspondence discloses a kind of data transmission system, with reference to Fig. 7, shows a kind of data transmission system provided in an embodiment of the present invention
The structural block diagram of system, including：UE701 and base station 702；
Wherein：
The specific effect of UE701 is referring to a kind of structural frames of user equipment disclosed in the embodiments of the present invention Fig. 3 and Fig. 4
Scheme corresponding content.
The specific effect of base station 702 is referring to a kind of structural block diagram of base station disclosed in the embodiments of the present invention Fig. 5 and Fig. 6
Corresponding content.
In conclusion based on the above-mentioned technical proposal it is found that a kind of data transmission method disclosed by the embodiments of the present invention, user
Equipment, base station and system.Upstream data is sent to base station by UE, upstream data carries UE id and resource information, wherein money
The resource pool information in source packet first resource pond selected from preset multiple resource pools according to current MCS value containing UE.
If UE receives the feedback information of base station transmission within a preset time, judge whether feedback information is nack message.If feedback information
It is nack message, judges whether carry instruction information in nack message, it is crowded that instruction information is used to indicate first resource pond.If the
One resource pool is crowded, and UE selects Secondary resource pond, and retransmits upstream data on Secondary resource pond.It is provided based on the present invention
Scheme can effectively avoid resource pool selection conflict, line number in raising when multiple UE are when selecting resource pool to send upstream data
According to the reliability of transmission.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.System and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (13)
1. a kind of data transmission method, which is characterized in that the method includes：
User equipment (UE) sends upstream data to base station, and the upstream data carries UE mark id and resource information, wherein described
Resource information includes the first resource that the UE is selected from preset multiple resource pools according to current modulation and coding MCS value
The resource pool information in pond；
If the UE receives the feedback information that the base station is sent within a preset time, judge whether the feedback information is negative
Confirm nack message；
If the feedback information is the nack message, judge instruction information whether is carried in the nack message, the instruction
It is crowded that information is used to indicate the first resource pond；
If the first resource pond is crowded, the UE selects Secondary resource pond, and retransmits institute on the Secondary resource pond
State upstream data.
2. the method according to claim 1, wherein if the MCS value is arranged by value range from low order to high-order
The sequence of column is the value range of 0-1, the value range of 2-9, the value range of 10-16, the value range of 17-27 and is greater than 27
Value range, the corresponding resource pool of each value range, the UE is according to the current MCS value from described preset
Multiple resource pools select the first resource pond, including：
The UE determines value range locating for the current MCS value, select the corresponding resource pool of the value range as
The first resource pond.
3. the method according to claim 1, wherein if the UE be not received by within a preset time it is described anti-
Feedforward information, alternatively, further including without carrying the instruction information in the nack message：
The UE retransmits the upstream data on the first resource pond.
4. method according to any one of claim 1-3, which is characterized in that the UE selects the Secondary resource pond
Process includes：
When the first resource pond is congestion state, the UE selection is lower by one than value range locating for the current MCS value
The corresponding resource pool of the value range of rank transmits on described again as the Secondary resource pond, and on the Secondary resource pond
Row data；
Wherein, the sequence that MCS value arrange from low order to high-order by value range is the value range of 0-1, the value range of 2-9,
The value range of 10-16, the value range of 17-27 and the value range greater than 27, each corresponding resource of the value range
Pond.
5. a kind of data transmission method, which is characterized in that the method includes：
Base station receives the upstream data that user equipment (UE) is sent, and parses to the upstream data, obtains resource information,
In, the resource information includes the UE selects the according to current modulation and coding MCS value from preset multiple resource pools
The resource pool information of one resource pool；
Resources occupation rate information of the base station based on all preset resource pools counted in advance, determines the first resource pond
Resources occupation rate；
The base station generates feedback information, sends the feedback information to the UE, so that the UE is based on the feedback information and holds
Row corresponding operating.
6. according to the method described in claim 5, it is characterized in that, the base station generates feedback information, to UE transmission institute
Feedback information is stated, including：
If the base station cannot be correctly decoded the upstream data, the base station generates negative confirmation nack message, is sent to institute
State UE；
If the resources occupation rate in the first resource pond is more than predetermined threshold value t1, the base station, which generates, carries instruction information
Nack message is sent to the UE, and it is congestion state that the instruction information, which is used to indicate the first resource pond,；
If the base station can be correctly decoded the upstream data, and first resource pond occupation rate is no more than the pre- gating
Limit value t1, the base station generate confirmation ACK information, are sent to the UE.
7. a kind of user equipment, which is characterized in that including：
Transmission unit, for sending upstream data to base station, the upstream data carries user equipment (UE) mark id and resource letter
Breath, wherein the resource information includes that the UE is selected from preset multiple resource pools according to current modulation and coding MCS value
Select the resource pool information in first resource pond；
Receiving unit, the feedback information sent for receiving the base station；
First judging unit, for judging whether the receiving unit receives the feedback information within a preset time, if described
Receiving unit receives the feedback information within a preset time, then executes second judgment unit；
The second judgment unit, for judging whether the feedback information is negative confirmation nack message, if the feedback letter
Breath is the nack message, then executes third judging unit；
The third judging unit, for judging whether carry instruction information in the nack message, the instruction information is used for
It indicates that the first resource pond is crowded, if carrying the instruction information, executes the second selecting unit；
Second selecting unit, for selecting Secondary resource pond when the first resource pond is crowded, the transmission unit exists
The upstream data is retransmitted on the Secondary resource pond.
8. user equipment according to claim 7, which is characterized in that further include：
First selecting unit, for selecting the first resource from preset multiple resource pools according to the current MCS value
Pond, including：If value range from low order to high-order, the value of 2-9 that the MCS value is 0-1 by the sequence that value range is arranged from
Range, the value range of 10-16, the value range of 17-27 and the value range greater than 27, each value range corresponding one
Resource pool, the first selecting unit determine value range locating for the current MCS value, select the value range corresponding
Resource pool as the first resource pond.
9. user equipment according to claim 7, which is characterized in that when the receiving unit does not connect within a preset time
The feedback information is received, alternatively, in the nack message when no carrying instruction information,
The transmission unit is also used to retransmit the upstream data on the first resource pond.
10. user equipment according to claim 9, which is characterized in that second selecting unit,
Specifically for selecting than value range locating for the current MCS value when the first resource pond is congestion state
The corresponding resource pool of the value range of low single order is as the Secondary resource pond, wherein MCS value is by value range from low order to height
The sequence of rank arrangement is the value range of 0-1, the value range of 2-9, the value range of 10-16, the value range of 17-27 and big
In 27 value range, each corresponding resource pool of the value range.
11. a kind of base station, which is characterized in that including：
Data receipt unit, for receiving the upstream data of user equipment (UE) transmission；
Resolution unit, the upstream data for sending to the UE parse, and obtain resource information, wherein the resource letter
Breath selects the resource in first resource pond comprising the UE according to current modulation and coding MCS value from preset multiple resource pools
Pond information；
Statistic unit determines described first for the resources occupation rate information based on all preset resource pools counted in advance
The resources occupation rate of resource pool；
Feedback unit sends the feedback information to the UE, the UE is made to be based on the feedback letter for generating feedback information
Breath executes corresponding operating.
12. base station according to claim 11, which is characterized in that the feedback unit, including：
First feedback module, for generating negative confirmation when the resolution unit cannot be correctly decoded the upstream data
Nack message is sent to the UE；
Second feedback module when being more than predetermined threshold value t1 for the resources occupation rate in the first resource pond, is generated and is carried
There is the nack message of instruction information, is sent to the UE, it is crowded shape that the instruction information, which is used to indicate the first resource pond,
State；
Third feedback module, if the upstream data, and the first resource pond can be correctly decoded for the resolution unit
When occupation rate is no more than the predetermined threshold value t1, confirmation ACK information is generated, the UE is sent to.
13. a kind of data transmission system, which is characterized in that including：User equipment described in any one of claim 7-10 and
Base station described in claim 11 or 12.
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