CN106793091B - Base station, user equipment and data transmission method - Google Patents
Base station, user equipment and data transmission method Download PDFInfo
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- CN106793091B CN106793091B CN201610973540.7A CN201610973540A CN106793091B CN 106793091 B CN106793091 B CN 106793091B CN 201610973540 A CN201610973540 A CN 201610973540A CN 106793091 B CN106793091 B CN 106793091B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
- H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
Abstract
Base station, user equipment and data transmission method, which comprises when needing to carry out transmitting uplink data, it is preset exempt from dispatch resource pool in random selection exempt from dispatch access-in resource to base station transmit primary data information；It include corresponding upstream data, customer equipment identification and follow-up data report in the primary data information；Follow-up data report includes the subsequent information for whether needing to transmit upstream data, and when it is subsequent need to transmit upstream data when, the information of the data volume of subsequent upstream data；Receive the feedback information that the base station is sent when receiving the primary data information and correctly parsing the primary data information of the user equipment transmission；Information is indicated based on the scheduling acquired from the feedback information, carries out the transmission of subsequent upstream data.Above-mentioned scheme can carry out transmitting uplink data time resource-saving, reduce data transmission delay, and improve reliability.
Description
Technical field
The present invention relates to wireless communication technique more particularly to a kind of base stations, user equipment and data transmission method.
Background technique
Long term evolution (Long Term Evolution, LTE) system uses the data based on scheduling (grant-based)
Transmission method, and (Orthogonal Frequency Division Multiple is accessed using downstream Quadrature frequency division multiple access
Access, OFDMA), uplink single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple
Access, SC-FDMA) access way.When the user equipment in Idle state (idle state) has data to send,
Connection is established by random access procedure and cell first, the unique wireless network for obtaining base station as its distribution is temporarily marked
(Cell-Radio Network Temporary Identifier, C-RNTI).Further, user sends uplink tune to base station
Degree request (scheduling Request, SR) with notify base station its have data to send, and request base station for its distribute uplink
Resource, base station are that user distributes ascending resource by uplink scheduling authorization (Scheduling Grant, SG).Thereafter, Yong Hugen
Uplink is carried out in respective resources according to the instruction of scheduling authorization, because uplink is by base station dynamic dispatching, therefore base station can
The data sent in respective resources to scheduled user equipment are received and are decoded.
The 5th generation communication technology (5G) communicates three major businesses scene-enhancing mobile broadband (eMBB), extensive Internet of Things
(massive MTC, mMTC), low time delay high reliable communication (Ultra-Reliable and Low Latency
Communication, URLLC), there is parcel data transmission service demand.Small bag data transmission has data packet small and industry
It is engaged in the sudden features such as strong, therefore industry extensive concern is obtained based on the transmission mechanism for exempting to dispatch (grant-free).It is being based on
In the ascending transmission method for exempting from scheduling, when the user in Idle state has data to send, does not need to send to base station and adjust
Degree request and waiting base station uplink scheduling authorization are its distribution ascending resource, and user can directly pass on exempting from scheduling resource
It is defeated.According to the method for salary distribution for exempting from scheduling resource, two types can be divided by exempting from scheduled transmission method: type I is that user equipment is random
Selection exempts to dispatch resource progress uplink；Type II is that the resource of exempting to dispatch that user equipment carries out uplink is pre- by base station
It is configuration or having predefined.
But above-mentioned method or that there is signaling overheadss is big, the longer problem of time delay or that there is transmission is reliable
Property difference problem.
Summary of the invention
Present invention solves the technical problem that being how to carry out transmitting uplink data time resource-saving, when reducing data transmission
Prolong, and the reliability of improve data transfer.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of data transmission method, comprising: when needs carry out
Row data transmit when, it is preset exempt from dispatch resource pool in random selection exempt from dispatch access-in resource to base station transmit initial number it is believed that
Breath；It include corresponding upstream data, customer equipment identification and follow-up data report in the primary data information；The subsequent number
It was reported that include the subsequent information for whether needing to transmit upstream data, and when it is subsequent need to transmit upstream data when, it is subsequent on
The information of the data volume of row data；The base station is received to receive the primary data information and correctly parsing the user
The feedback information that the primary data information that equipment is sent constantly is sent；When subsequent including needing to carry out in follow-up data report
When the information of uplink, the feedback information includes the scheduling instruction information of subsequent upstream data transmission；Based on from described anti-
The scheduling instruction information acquired in feedforward information, carries out the transmission of subsequent upstream data.
Optionally, described to exempt to dispatch resource pool to include time-frequency physical resource and multiple access access-in resource.
Optionally, the multiple access access-in resource includes code book, code word, sequence, interleaver, the mapping method of interleaver, solution
Adjust at least one of reference signal, lead code, airspace resource and power domain resource.
Optionally, the primary data information is sent using the data packet that data volume is less than preset threshold, and uses low order
Code modulating method carries out coded modulation.
Optionally, the preset threshold is determined according to system requirements.
Optionally, the scheduling instruction information includes the configuration information for exempting to dispatch multi-access resource.
Optionally, described that information is indicated based on the scheduling parsed in the feedback information, carry out subsequent upstream data
Transmission, comprising: exempt to dispatch multi-access resource using indicated by scheduling instruction information, transmit subsequent upstream data to base station.
Optionally, the scheduling instruction information includes that subsequent upstream data transmit corresponding scheduling authorization information.
Optionally, described that information is indicated based on the scheduling parsed in the feedback information, carry out subsequent upstream data
Transmission, comprising: according to the scheduling authorization information, transmit subsequent upstream data to base station under the scheduling of the base station.
Optionally, when not receiving the feedback information that the base station is sent within the preset time, further includes: from institute
It states to exempt to dispatch to randomly select in resource pool and exempts to dispatch access-in resource again to the base station transmission primary data information.
The embodiment of the invention also provides another data transmission methods, comprising: exempts to dispatch access-in resource pond to preset
Carry out blind examination；When detecting the primary data information of user device transmissions, the primary data information is parsed；It is described
It include corresponding upstream data, demodulated reference signal, customer equipment identification and the letter of follow-up data report in primary data information
Breath；The follow-up data report includes whether to need the information of subsequent transmission upstream data, and works as and need subsequent transmission uplink
The information of the data volume of subsequent upstream data when data；When the primary data information for correctly parsing the user equipment transmission
When, Xiang Suoshu user equipment sends corresponding feedback information；When the follow-up data report in include need to carry out subsequent upstream
When the information of transmission, the feedback information includes the scheduling instruction information of subsequent upstream data transmission.
Optionally, described to exempt to dispatch resource pool to include time-frequency physical resource and multiple access access-in resource.
Optionally, the multiple access access-in resource includes code book, code word, sequence, interleaver, the mapping method of interleaver, solution
Adjust at least one of reference signal, lead code, airspace resource and power domain resource.
Optionally, the primary data information is less than the small data packets of preset threshold using data volume, and is compiled using low order
Code modulator approach carries out coded modulation.
Optionally, the preset threshold is determined according to system requirements.
Optionally, the follow-up data report includes whether to need the information of subsequent transmission upstream data, and when needs
When subsequent transmission upstream data, the information of the data volume of subsequent upstream data.
Optionally, the scheduling instruction information includes exempting to dispatch configuration information or the transmission of subsequent upstream data of multi-access resource
Corresponding scheduling authorization information.
The embodiment of the invention also provides a kind of user equipmenies, comprising: the first transmission unit needs to carry out uplink suitable for working as
Data transmit when, it is preset exempt from dispatch resource pool in random selection exempt from dispatch access-in resource to base station transmit initial number it is believed that
Breath；It include corresponding upstream data, customer equipment identification and follow-up data report in the primary data information；The subsequent number
It was reported that include the subsequent information for whether needing to transmit upstream data, and when it is subsequent need to transmit upstream data when, it is subsequent on
The information of the data volume of row data；Receiving unit is receiving the primary data information and correct suitable for receiving the base station
The feedback information sent when parsing the primary data information that the user equipment is sent；When the follow-up data report in include
When needing to carry out the information of subsequent upstream transmission, the feedback information includes the scheduling instruction information of subsequent upstream data transmission；
Second transmission unit carries out subsequent upstream data suitable for indicating information based on the scheduling acquired from the feedback information
Transmission.
Optionally, described to exempt to dispatch resource pool to include time-frequency physical resource and multiple access access-in resource.
Optionally, the multiple access access-in resource includes code book, code word, sequence, interleaver, the mapping method of interleaver, solution
Adjust at least one of reference signal, lead code, airspace resource and power domain resource.
Optionally, the primary data information is sent using the data packet that data volume is less than preset threshold, and uses low order
Code modulating method carries out coded modulation.
Optionally, the preset threshold is determined according to system requirements.
Optionally, the scheduling instruction information includes the configuration information for exempting to dispatch multi-access resource.
Optionally, second transmission unit, suitable for exempting to dispatch multi-access resource using indicated by scheduling instruction information, to
Transmit subsequent upstream data in base station.
Optionally, the scheduling instruction information includes that subsequent upstream data transmit corresponding scheduling authorization information.
Optionally, second transmission unit, be suitable for according to the scheduling authorization information, under the scheduling of the base station to
Transmit subsequent upstream data in base station.
Optionally, the user equipment further include: transmission unit is retried, suitable for described when not receiving within the preset time
Base station send the feedback information when, from it is described exempt from dispatch resource pool in randomly select exempt from dispatch access-in resource again to described
Transmit the primary data information in base station.
The embodiment of the invention also provides a kind of base stations, comprising: blind examination unit, suitable for exempting to dispatch access-in resource to preset
Pond carries out blind examination；Resolution unit, suitable for when detecting the primary data information of user device transmissions, to the initial number it is believed that
Breath is parsed；In the primary data information include corresponding upstream data, demodulated reference signal, customer equipment identification and after
The information of continuous data report；The follow-up data report includes whether to need the information of subsequent transmission upstream data, and working as need to
The information of the data volume of subsequent upstream data when wanting subsequent transmission upstream data；Feedback unit ought correctly parse institute suitable for working as
When stating the primary data information of user equipment transmission, Xiang Suoshu user equipment sends corresponding feedback information；When the subsequent number
It include when needing to carry out the information of subsequent upstream transmission in it was reported that, the feedback information includes the tune of subsequent upstream data transmission
Degree instruction information.
Optionally, described to exempt to dispatch resource pool to include time-frequency physical resource and multiple access access-in resource.
Optionally, the multiple access access-in resource includes code book, code word, sequence, interleaver, the mapping method of interleaver, solution
Adjust at least one of reference signal, lead code, airspace resource and power domain resource.
Optionally, the primary data information is less than the data packet of preset threshold using data volume, and is encoded using low order
Modulator approach carries out coded modulation.
Optionally, the preset threshold is determined according to system requirements.
Optionally, the follow-up data report includes whether to need the information of subsequent transmission upstream data, and when needs
When subsequent transmission upstream data, the information of the data volume of subsequent upstream data.
Optionally, the scheduling instruction information includes exempting to dispatch configuration information or the transmission of subsequent upstream data of multi-access resource
Corresponding scheduling authorization information.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that
Above-mentioned scheme, user equipment can be used communication system and are pre-configured with when needing to carry out transmitting uplink data
Exempt from dispatch resource pool in exempt from dispatch access-in resource carry out primary data information transmission, realize data transmission while with
Connection is established in base station, can save user equipment and convert from Idle state to the signaling overheads for the connected state that can send upstream data
And reduce data transmission delay；Meanwhile include whether to need to carry out in the primary data information transmission of subsequent upstream data with
And the information of the data volume of subsequent upstream transmission when needing subsequent upstream transmission, allow base station for subsequent upstream data biography
Transmission & distribution set corresponding scheduling instruction information, so as to indicate information based on the scheduling, transmit subsequent upstream data to base station,
The reliability of transmitting uplink data can be improved to avoid resource contention.
Further, the primary data information that user equipment is sent is less than the small data packets of preset threshold using data volume,
And coded modulation is carried out using low order code modulation mode, the reliability of initial data transfer can be improved, so as to improve
The reliability of connection is established with cell by primary data information transmission.
Further, base station can be that the subsequent upstream data transmission configuration of user equipment is corresponding according to the demand of system
Scheduling indicate information, can be that user device configuration second of type exempt from scheduling data transmission method according to the demand of system
Or the uplink data transmission method based on scheduling, the flexibility of the transmission of subsequent upstream data can be improved.
Detailed description of the invention
Fig. 1 is a kind of flow chart of data transmission method of the embodiment of the present invention；
Fig. 2 is the flow chart of another data transmission method of the embodiment of the present invention；
Fig. 3 is a kind of flow chart of data transmission method of the embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of user equipment of the embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of base station of the embodiment of the present invention.
Specific embodiment
In the prior art, the uplink data transmission method based on scheduling (grant-based) in LTE, generally mostly uses
The advantages that orthogonal access mode has receiver simple, high reliablity, link adaptation is strong.However, user equipment into
It needs to establish connection by random access procedure and cell first before row transmitting uplink data and obtains scheduling authorization from base station side,
Thus a large amount of Signalling exchange will be generated between base station and user equipment, bring heavier load overhead and time delay, by
For packet services, the problem of there is ineffective systems.
Packet services in 5G can use just using based on the ascending transmission method for exempting from scheduling (grant-free)
Multiple access and non-orthogonal multiple is handed over to access two ways, user equipment is not necessarily to when there is transmitting uplink data demand from base station dynamic
Scheduling information is obtained, it can be directly in the transmission for exempting to dispatch progress upstream data in resource.Compared with the transmission method based on scheduling
Speech effectively saves signaling overheads and reduces time delay, improves the utilization rate of resource.But this method is due to lacking dynamic
Scheduling information instruction, multiple user equipmenies may exempt to dispatch resource progress uplink using identical, increase generation resource
The probability of collision, causes transmission reliability to reduce.Meanwhile because base station has no way of knowing which user equipment exempt from scheduling money using in advance
Source sends data, when receiving data for sending the customer equipment identification of upstream data also not yet it is found that needing to carry out blind examination.
Meanwhile based on ascending transmission method there is also link adaptations poor, the hybrid automatic repeat-request (Hybrid for exempting from scheduling
Automatic Repeat reQuest, HARQ) realize difficulty problem.
To solve the problem above-mentioned, the embodiment of the present invention is by the way that when needing to carry out transmitting uplink data, user equipment exists
The random selection in resource pool of exempting to dispatch of the preconfigured unification of communication system exempts to dispatch access-in resource progress primary data information
Transmission, establish connection with base station while realizing data transmission, user equipment can be saved and converted from Idle state to can be with
It carries out the signaling overheads of the connected state of transmitting uplink data and reduces data transfer delay；Meanwhile in the primary data information
Include whether the data volume of subsequent upstream transmission when needing to carry out the transmission of subsequent upstream data and needing subsequent upstream transmission
Information, allow base station to be that the corresponding scheduling of subsequent upstream data transmission configuration indicates information, described in being based on
Scheduling instruction information, transmits subsequent upstream data to base station, can improve the reliable of transmitting uplink data to avoid resource contention
Property.
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this
The specific embodiment of invention is described in detail.
Fig. 1 shows the schematic diagram of one of embodiment of the present invention data transmission method for uplink.Referring to Fig. 1, the present invention is implemented
Data transmission method for uplink in example may include following step:
Step S101: when needing to carry out transmitting uplink data, it is preset exempt from dispatch resource pool in random selection exempt to adjust
It spends access-in resource and transmits primary data information to base station.
In the preset implementation, exempt from scheduling resource pool to be pre-configured with for communication system, and for known to user equipment and base station.
Step S102: it receives the base station and is receiving the primary data information and correctly parsing the user equipment
The feedback information sent when the primary data information of transmission.
In specific implementation, according to follow-up data report in the information for whether carrying out subsequent upstream data transmission it is different,
The feedback information that base station is sent also will be different.Specifically, when the primary data information that user equipment is sent to base station includes being not required to
When carrying out the information of subsequent upstream data transmission, feedback information transmitted by base station only includes ACK and customer equipment identification
Information namely feedback information use the form of format I；When user equipment be sent to base station primary data information include need into
When the information of the data volume of the transmission of row subsequent upstream data and subsequent upstream data, feedback information transmitted by base station is not only wrapped
The information for including ACK and customer equipment identification, further includes the corresponding scheduling instruction information of subsequent upstream data, i.e. feedback information uses
The form of format II.
Step S103: information is indicated based on the scheduling acquired from the feedback information, carries out subsequent upstream data
Transmission.
In specific implementation, user equipment, can when also needing to transmit data to base station after primary data information
Scheduling in the feedback information according to transmitted by base station indicates that information transmits subsequent upstream data to base station, can be to avoid resource
Collision, the reliability of improve data transfer.
Referring to fig. 2, accordingly, the concrete operations during the uplink data transmission method shown in Fig. 1 of base station can wrap
It includes:
Step S201: exempt to dispatch the progress blind examination of access-in resource pond to preset.
Step S202: when detecting the primary data information of user device transmissions, the primary data information is carried out
Parsing.
Step S203: when correctly parsing the primary data information that the user equipment is sent, Xiang Suoshu user equipment
Send corresponding feedback information.
In specific implementation, when including needing to carry out the information of subsequent upstream transmission in follow-up data report, institute
State the scheduling instruction information that feedback information includes the transmission of subsequent upstream data.
Above-mentioned scheme, user equipment can be used communication system and are pre-configured with when needing to carry out transmitting uplink data
Exempt from dispatch resource pool in exempt from dispatch access-in resource carry out primary data information transmission, due to not needing the dynamic tune of base station
Degree, can save user equipment from Idle state convert to can carry out the signaling overheads of transmitting uplink data and reduce data transmission
Delay；Meanwhile it including whether to need to carry out the transmission of subsequent upstream data in the primary data information and needing subsequent upstream
The information of the data volume of subsequent upstream transmission when transmission allows base station to be the corresponding tune of subsequent upstream data transmission configuration
Degree instruction information is transmitted subsequent upstream data to base station, can be rushed to avoid resource so as to indicate information based on the scheduling
It is prominent, improve the reliability of transmitting uplink data.
The data transmission method in the embodiment of the present invention will be further described in detail below.
Fig. 3 shows the flow chart of one of embodiment of the present invention data transmission method.Referring to Fig. 3, the present invention is implemented
Data transmission method in example is suitable for user equipment to base station and transmits upstream data, can specifically include following step:
Step S301: when carrying out transmitting uplink data, the user equipment exempts to select at random in scheduling resource pool described
It selects and exempts to dispatch access-in resource to base station transmission primary data information.
In specific implementation, exempt from scheduling resource pool to be pre-configured with by communication system, and exempt to dispatch and exempt to dispatch in resource pool
Access-in resource includes time-frequency physical resource and multiple access access-in resource.Wherein, multiple access access-in resource is 5G non-orthogonal multiple access money
Source may include code book, code word, sequence, interleaver, the mapping method of interleaver, demodulated reference signal, lead code, airspace
At least one of resource and power domain resource.What base station and user equipment knew that communication system configured in advance exempts to dispatch resource pool
Information.When needing to carry out transmitting uplink data, the user equipment in Idle state can directly be matched in 5G communication system
The one or more of exempting to randomly select in scheduling resource pool set is exempted to dispatch access-in resource transmission primary data information, namely and base station
Data for the first time are carried out to transmit.
In specific implementation, user equipment send primary data information include customer equipment identification, upstream data and after
Continuous data report.Wherein, the customer equipment identification is used to identify the identity for the user equipment for sending primary data information, can
Think in LTE system the identity of S- temporarily moved subscriber (S-Temporary Mobile Subscriber Identity,
S-TMSI) or other customer equipment identification, such as the body for capableing of unique identification user equipment predefined in 5G communication system
The mark etc. of part information, the present invention is herein with no restrictions.Follow-up data report for base station show primary data information it
Afterwards, whether user equipment needs to continue to send upstream data, and the subsequent upstream data when needing to continue to send upstream data
Data volume information so that base station can distribute corresponding resource for user equipment, to transmit subsequent upstream data.
In an embodiment of the present invention, in order to improve the reliability that primary data information is transmitted, user equipment is first in transmission
When beginning data information, the small data packets mode of preset threshold is less than using data volume, and the code modulation mode used is low order
Code modulation mode, with improve primary data information transmission reliability, pass through initial number so as to improve user equipment
It is believed that breath establishes the reliability of connection with base station (cell).
Step S302: the base station to it is described exempt to dispatch resource pool carry out blind examination, the primary data information that blind examination is arrived into
Row parsing, and when correctly parsing the primary data information that the user equipment is sent, Xiang Suoshu user equipment, which is sent, to be corresponded to
Feedback information.
In specific implementation, when carrying out the transmission of primary data information, uplink transmission resource used in user equipment is
Exempt to dispatch in resource pool and exempt to dispatch access-in resource, base station is simultaneously unaware of which which user equipment exempt to dispatch access-in resource using
Upstream data is sent, therefore, what base station needed to configure system exempts to dispatch resource pool progress blind examination, to receive user in time
The primary data information that equipment is sent.
When by blind examination detect user equipment send primary data information when, base station to the initial number detected it is believed that
Breath is parsed, to obtain the information of the customer equipment identification in primary data information, upstream data and follow-up data report.Its
In, it, can be into primary data information when base station successfully parses above- mentioned information from the received primary data information of institute
The corresponding user equipment of customer equipment identification send corresponding feedback information so that corresponding user equipment can be known just
Whether the transmission of beginning data information succeeds.Wherein, it is reported when base station by parsing follow-up data and determines that user equipment is needed initial
When continuing to transmit upstream data after data information, the feedback information that base station is sent to user equipment is that feedback information uses format
II；Conversely, then using the feedback information for using format I.
In specific implementation, base station can use in LTE system to the mode that user equipment sends feedback information and connect at random
The feedback method of random access response (Random Access Response, RAR) during entering, or LTE can also be used
Physical mixed automatic re-transmission indicating channel (Physical Hybrid ARQ Indicator Channel, PHICH) in system
It feeds back etc., those skilled in the art can be configured according to the actual needs, and the present invention is with no restrictions.
Step S303: whether the user equipment judgement receives the feedback information of base station transmission within a preset time；When
Judging result is that when being, can execute step S304；Conversely, step S307 can be executed.
In specific implementation, the duration of the preset time can be set according to the actual needs, initial time
When can be sent completely since primary data information.
Step S304: user equipment judgement received feedback information be format I feedback information or format II
Feedback information；When determine received feedback information be the feedback information of format I when, step 305 can be executed；Conversely, then
Step 306 can be executed.
Step S305: the user equipment terminates the transmission of this data.
In specific implementation, the user equipment receives the feedback information of the format I of base station transmission within a preset time, i.e.,
When feedback information only includes ACK and customer equipment identification information, it can determine that base station is successfully received primary data information, and nothing
Subsequent upstream data are sent.At this point, user equipment can terminate the transmission process of this data.
Step S306: the user equipment parses corresponding scheduling instruction information from the received feedback information of institute, and
The scheduling obtained based on parsing indicates information, transmits subsequent upstream data to base station.
In specific implementation, user equipment is in the inscribed feedback information for receiving base station transmission of preset time, and determines institute
Not only include the user identity information of ACK and itself in received feedback information, further includes the scheduling instruction of subsequent data transmission
It can determine that primary data information sends successfully and has subsequent upstream data to need to continue when information, the i.e. feedback information of format II
Transmission.At this point, user equipment can carry out the biography of subsequent upstream data under the instruction for the scheduling instruction information that parsing obtains
It is defeated.
In an embodiment of the present invention, the corresponding transfer resource of scheduling instruction information that base station is configured in feedback information
When institute is transmitted in subsequent upstream data to exempt from exempt to dispatch access-in resource namely the user equipment of scheduled transmission mechanism type II in 5G
The access-in resource of exempting to dispatch used is that base station is pre-configured with or communication system is pre-set.Using exempting from scheduled transmission mechanism class
Type II's exempts to dispatch the transmission that access-in resource carries out upstream data, can exempt from scheduling access money using identical to avoid user equipment
Subsequent upstream data is transmitted in source, thus the reliability of subsequent upstream data transmission can be improved.
In an alternative embodiment of the invention, the scheduling instruction information that base station is configured in feedback information is to carry out on subsequent
The scheduling authorization information namely user equipment that the transmission of row data carries out carry out subsequent upstream data transmission under the scheduling of base station,
Because base station side can the data that send of user equipment in respective resources to scheduled in received and decoded, thus can reduce
Receiver Complexity and the reliability for improving the transmission of subsequent upstream data.
Step S307: from it is described exempt from dispatch resource pool in randomly select exempt from dispatch access-in resource again to the base station send
The primary data information.
In specific implementation, when user equipment does not receive the feedback information of base station transmission within a preset time, show
Primary data information sends failure.At this point, user equipment can exempt to dispatch from communication system is configured in resource pool again with
Machine selects one or more random access resources, to send primary data information to base station again, namely since step S301
It executes, until determining that primary data information is sent successfully or number of retransmissions reaches preset by the feedback information that base station is sent
Threshold value.
The above-mentioned data transmission method in the embodiment of the present invention is described in detail, below will be to above-mentioned method
Corresponding device is described.
Fig. 4 shows the result of one of embodiment of the present invention user equipment.Referring to fig. 4, in the embodiment of the present invention
A kind of user equipment 400 may include the first transmission unit 401, receiving unit 402 and the second transmission unit 403, in which:
First transmission unit 401, suitable for when needing to carry out transmitting uplink data, it is preset exempt to dispatch in resource pool with
Machine selection exempts to dispatch access-in resource to base station transmission primary data information；It include corresponding upper line number in the primary data information
According to, customer equipment identification and follow-up data report；Whether the follow-up data report needs to transmit upstream data including subsequent
Information, and when it is subsequent need to transmit upstream data when, the information of the data volume of subsequent upstream data；
In specific implementation, the primary data information is sent using the data packet that data volume is less than preset threshold, and is adopted
Coded modulation is carried out with low order code modulating method, to improve the reliability of primary data information transmission, and then use can be improved
Family equipment establishes the reliability of connection by initial data transfer and base station.The wherein preset threshold and low order coded modulation side
Method can be set according to the actual needs by communication system, and the present invention is herein with no restrictions.
In specific implementation, described to exempt to dispatch resource pool to may include time-frequency physical resource and multiple access access-in resource.Wherein,
The multiple access access-in resource includes code book, code word, sequence, interleaver, the mapping method of interleaver, demodulated reference signal, leading
At least one of code, airspace resource and power domain resource.
Receiving unit 402, suitable for receive the base station receive the primary data information and correctly parse it is described
The feedback information sent when the primary data information that user equipment is sent；After including needing to carry out in follow-up data report
When the information of continuous uplink, the feedback information includes the scheduling instruction information of subsequent upstream data transmission.
Second transmission unit 403, suitable for indicating information based on the scheduling acquired from the feedback information, after progress
Continuous transmitting uplink data.
In an embodiment of the present invention, the scheduling instruction information includes the configuration information for exempting to dispatch multi-access resource；It is described
Second transmission unit 403 transmits subsequent upstream to base station suitable for exempting to dispatch multi-access resource using indicated by scheduling instruction information
Data.
In an alternative embodiment of the invention, the scheduling instruction information includes that the corresponding scheduling of subsequent upstream data transmission is awarded
Weigh information；Second transmission unit 403 is suitable for according to the scheduling authorization information, to base station under the scheduling of the base station
Transmit subsequent upstream data.
In specific implementation, the user equipment 400 can also include retrying transmission unit 404, in which:
Transmission unit 404 is retried, suitable for when the feedback information for not receiving the base station transmission within the preset time
When, from it is described exempt to dispatch in resource pool randomly select exempt to dispatch access-in resource transmit the initial number to the base station again it is believed that
Breath.
Fig. 5 shows the structure of one of embodiment of the present invention base station.Referring to Fig. 5, one of the embodiment of the present invention
Base station 500 may include blind examination unit 501, resolution unit 502 and feedback unit 503, in which:
Blind examination unit 501, suitable for exempting to dispatch the progress blind examination of access-in resource pond to preset.
Resolution unit 502, suitable for when detecting the primary data information of user device transmissions, to the initial number it is believed that
Breath is parsed；It include corresponding upstream data, customer equipment identification and follow-up data report in the primary data information
Information；The follow-up data report includes whether to need the information of subsequent transmission upstream data, and works as and need in subsequent transmission
The information of the data volume of subsequent upstream data when row data.
Feedback unit 503, suitable for when correctly parsing the primary data information that the user equipment is sent, to the use
Family equipment sends corresponding feedback information；When the information in follow-up data report including needing to carry out subsequent upstream transmission
When, the feedback information includes the scheduling instruction information of subsequent upstream data transmission.
In specific implementation, described to exempt to dispatch resource pool to may include time-frequency physical resource and multiple access access-in resource.Wherein,
The multiple access access-in resource includes code book, code word, sequence, interleaver, the mapping method of interleaver, demodulated reference signal, leading
At least one of code, airspace resource and power domain resource.
In specific implementation, the primary data information is sent using the data packet that data volume is less than preset threshold, and is adopted
Coded modulation is carried out with low order code modulating method, to improve the reliability of primary data information transmission, and then use can be improved
Family equipment establishes the reliability of connection by initial data transfer and base station.
In specific implementation, the scheduling instruction information includes the configuration information or subsequent upstream number for exempting to dispatch multi-access resource
According to transmitting corresponding scheduling authorization information, so that user equipment can be used and exempt from the scheduling of exempting from of scheduled transmission mechanism type II and connect
Enter resource or carry out the transmission of subsequent upstream data under the scheduling of base station, to improve the reliable of subsequent upstream data transmission
Property.
Using the above scheme in the embodiment of the present invention, user equipment can make when needing to carry out transmitting uplink data
The transmission of primary data information is carried out with the preconfigured access-in resource of exempting to dispatch exempted to dispatch in resource pool of communication system, it can be with
Realize data transmission while with base station establish connection, can save user equipment from Idle state convert to be able to carry out uplink pass
Defeated signaling overheads simultaneously reduces data transmission delay；Meanwhile it including whether to need to carry out on subsequent in the primary data information
The information of the data volume of subsequent upstream transmission when row data are transmitted and need subsequent upstream transmission, after allowing base station to be
Continuous transmitting uplink data configures corresponding scheduling and indicates information, so as to indicate information based on the scheduling, transmits to base station
Subsequent upstream data, can be to avoid resource contention, so as to improve the reliability of transmitting uplink data.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (28)
1. a kind of data transmission method characterized by comprising
When needing to carry out transmitting uplink data, exempts to dispatch random selection in resource pool preset and exempt to dispatch access-in resource to base
It stands and transmits primary data information；It include corresponding upstream data, customer equipment identification and subsequent number in the primary data information
It was reported that；The follow-up data report includes the subsequent information for whether needing to transmit upstream data, and subsequent ought need to transmit
When upstream data, the information of the data volume of subsequent upstream data；The primary data information is less than preset threshold using data volume
Small data packets send, and using low order code modulating method carry out coded modulation；
Receive what the base station was sent when receiving the primary data information and correctly parsing the primary data information
Feedback information；When including needing to carry out the information of subsequent upstream transmission in follow-up data report, the feedback information packet
Include the scheduling instruction information of subsequent upstream data transmission；The scheduling instruction information include exempt to dispatch multi-access resource with confidence
Breath；
Information is indicated based on the scheduling acquired from the feedback information, carries out the transmission of subsequent upstream data.
2. data transmission method according to claim 1, which is characterized in that described to exempt to dispatch resource pool to include time-frequency physics
Resource and multiple access access-in resource.
3. data transmission method according to claim 2, which is characterized in that the multiple access access-in resource includes code book, code
In word, sequence, interleaver, the mapping method of interleaver, demodulated reference signal, lead code, airspace resource and power domain resource extremely
Few one kind.
4. data transmission method according to claim 1, which is characterized in that the preset threshold is true according to system requirements
It is fixed.
5. data transmission method according to claim 1, which is characterized in that described to be based on parsing in the feedback information
The scheduling instruction information arrived, carries out the transmission of subsequent upstream data, comprising:
Exempt to dispatch multi-access resource using indicated by scheduling instruction information, transmits subsequent upstream data to base station.
6. data transmission method according to claim 1, which is characterized in that the scheduling instruction information includes subsequent upstream
Data transmit corresponding scheduling authorization information.
7. data transmission method according to claim 6, which is characterized in that described to be based on parsing in the feedback information
The scheduling instruction information arrived, carries out the transmission of subsequent upstream data, comprising:
According to the scheduling authorization information, subsequent upstream data are transmitted to base station under the scheduling of the base station.
8. data transmission method according to claim 1, which is characterized in that when not receiving the base within the preset time
Stand send the feedback information when, further includes:
From it is described exempt to dispatch in resource pool to randomly select exempt to dispatch access-in resource and transmit the primary data to the base station again
Information.
9. a kind of data transmission method characterized by comprising
Exempt to dispatch the progress blind examination of access-in resource pond to preset；
When detecting the primary data information of user device transmissions, the primary data information is parsed；It is described initial
It include the information of corresponding upstream data, customer equipment identification and follow-up data report in data information；The subsequent datagrams
Accuse the information for including whether to need subsequent transmission upstream data, and the subsequent upstream data when needing subsequent transmission upstream data
Data volume information；The primary data information is less than the small data packets of preset threshold using data volume, and is compiled using low order
Code modulator approach carries out coded modulation；
When correctly parsing the primary data information that the user equipment is sent, Xiang Suoshu user equipment sends corresponding feedback
Information；When including needing to carry out the information of subsequent upstream transmission in follow-up data report, after the feedback information includes
The scheduling of continuous transmitting uplink data indicates information；The scheduling instruction information includes the configuration information for exempting to dispatch multi-access resource.
10. data transmission method according to claim 9, which is characterized in that described to exempt to dispatch resource pool to include time-frequency object
Manage resource and multiple access access-in resource.
11. data transmission method according to claim 10, which is characterized in that the multiple access access-in resource include code book,
In code word, sequence, interleaver, the mapping method of interleaver, demodulated reference signal, lead code, airspace resource and power domain resource
It is at least one.
12. data transmission method according to claim 9, which is characterized in that the preset threshold is true according to system requirements
It is fixed.
13. data transmission method according to claim 9, which is characterized in that the follow-up data report includes whether to need
The information of subsequent transmission upstream data is wanted, and when needing subsequent transmission upstream data, the data volume of subsequent upstream data
Information.
14. data transmission method according to claim 9, which is characterized in that the scheduling instruction information includes on subsequent
Row data transmit corresponding scheduling authorization information.
15. a kind of user equipment characterized by comprising
First transmission unit, suitable for exempting to randomly choose in scheduling resource pool preset when needing to carry out transmitting uplink data
Exempt to dispatch access-in resource to base station transmission primary data information；It include corresponding upstream data, use in the primary data information
Family device identification and follow-up data report；The follow-up data report includes the subsequent information for whether needing to transmit upstream data,
And when it is subsequent need to transmit upstream data when, the information of the data volume of subsequent upstream data；The primary data information uses
The data packet that data volume is less than preset threshold is sent, and carries out coded modulation using low order code modulating method；
Receiving unit is receiving the primary data information and is correctly parsing the primary data suitable for receiving the base station
The feedback information sent when information；When including needing to carry out the information of subsequent upstream transmission in follow-up data report, institute
State the scheduling instruction information that feedback information includes the transmission of subsequent upstream data；The scheduling instruction information includes exempting to dispatch multiple access money
The configuration information in source；
Second transmission unit carries out subsequent upstream suitable for indicating information based on the scheduling acquired from the feedback information
Data transmission.
16. user equipment according to claim 15, which is characterized in that described to exempt to dispatch resource pool to include time-frequency physics money
Source and multiple access access-in resource.
17. user equipment according to claim 16, which is characterized in that the multiple access access-in resource include code book, code word,
At least one in sequence, interleaver, the mapping method of interleaver, demodulated reference signal, lead code, airspace resource and power domain resource
Kind.
18. user equipment according to claim 15, which is characterized in that the preset threshold is determined according to system requirements.
19. user equipment according to claim 15, which is characterized in that second transmission unit is suitable for using scheduling
Exempt to dispatch multi-access resource indicated by instruction information, transmits subsequent upstream data to base station.
20. user equipment according to claim 15, which is characterized in that the scheduling instruction information includes subsequent upstream number
According to the corresponding scheduling authorization information of transmission.
21. user equipment according to claim 20, which is characterized in that second transmission unit is suitable for according to
Scheduling authorization information transmits subsequent upstream data to base station under the scheduling of the base station.
22. user equipment according to claim 15, which is characterized in that further include: transmission unit is retried, is suitable for when pre-
If time in when not receiving the feedback information that the base station is sent, from it is described exempt to dispatch to randomly select in resource pool exempt to adjust
It spends access-in resource and transmits the primary data information to the base station again.
23. a kind of base station characterized by comprising
Blind examination unit, suitable for exempting to dispatch the progress blind examination of access-in resource pond to preset；
Resolution unit, suitable for being carried out to the primary data information when detecting the primary data information of user device transmissions
Parsing；It include the information of corresponding upstream data, customer equipment identification and follow-up data report in the primary data information；Institute
It states follow-up data report to include whether to need the information of subsequent transmission upstream data, and when needing subsequent transmission upstream data
The information of the data volume of subsequent upstream data；The primary data information is less than the data packet of preset threshold using data volume, and
Coded modulation is carried out using low order code modulating method；
Feedback unit, suitable for when correctly parsing the primary data information that the user equipment is sent, Xiang Suoshu user equipment
Send corresponding feedback information；It is described when including needing to carry out the information of subsequent upstream transmission in follow-up data report
Feedback information includes the scheduling instruction information of subsequent upstream data transmission；The scheduling instruction information includes exempting to dispatch multi-access resource
Configuration information；.
24. base station according to claim 23, which is characterized in that it is described exempt from dispatch resource pool include time-frequency physical resource and
Multiple access access-in resource.
25. base station according to claim 24, which is characterized in that the multiple access access-in resource includes code book, code word, sequence
At least one in column, interleaver, the mapping method of interleaver, demodulated reference signal, lead code, airspace resource and power domain resource
Kind.
26. base station according to claim 23, which is characterized in that the preset threshold is determined according to system requirements.
27. base station according to claim 23, which is characterized in that the follow-up data report includes whether to resume after needing
The information of defeated upstream data, and when needing subsequent transmission upstream data, the information of the data volume of subsequent upstream data.
28. base station according to claim 23, which is characterized in that the scheduling instruction information includes that subsequent upstream data pass
Defeated corresponding scheduling authorization information.
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| CN109964517A (en) * | 2017-01-05 | 2019-07-02 | 华为技术有限公司 | Data transmission method and terminal and the network equipment |
| TWI726216B (en) | 2017-06-16 | 2021-05-01 | 財團法人資訊工業策進會 | User equipment and base station |
| CN109152039B (en) * | 2017-06-16 | 2021-01-08 | 维沃移动通信有限公司 | Data transmission method, mobile terminal and base station |
| CN110754125B (en) * | 2017-07-13 | 2022-04-29 | 华为技术有限公司 | Resource pool configuration method and device |
| CN109391419B (en) | 2017-08-11 | 2021-08-20 | 华为技术有限公司 | Wireless communication method and device |
| CN109391428B (en) | 2017-08-11 | 2020-08-28 | 维沃移动通信有限公司 | Information transmission method, terminal and base station |
| CN109413744B (en) * | 2017-08-18 | 2020-12-08 | 华为技术有限公司 | Communication method and device |
| CN109526062A (en) * | 2017-09-20 | 2019-03-26 | 株式会社Ntt都科摩 | Uplink scheduling mode determines method, user equipment and base station |
| CN110351862B (en) * | 2018-04-03 | 2022-10-28 | 北京紫光展锐通信技术有限公司 | Method, device, base station and user equipment for realizing retransmission based on scheduling |
| CN111769861B (en) * | 2018-05-09 | 2022-08-26 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| CN110708764B (en) * | 2018-07-09 | 2022-01-25 | 维沃移动通信有限公司 | Information transmission method, network equipment and terminal |
| EP3876652A4 (en) | 2018-10-29 | 2022-06-15 | Beijing Xiaomi Mobile Software Co., Ltd. | Data transmission method and apparatus based on unlicensed uplink scheduling, and storage medium |
| WO2020124487A1 (en) | 2018-12-20 | 2020-06-25 | 北京小米移动软件有限公司 | Data transmission method and device |
| CN109548157B (en) * | 2019-01-09 | 2023-04-07 | 武汉虹信科技发展有限责任公司 | Uplink scheduling-free transmission method, base station and user equipment |
| CN111294162B (en) * | 2019-03-28 | 2022-09-16 | 展讯通信（上海）有限公司 | V2X transmission method and device, storage medium and user equipment |
| WO2022028267A1 (en) * | 2020-08-03 | 2022-02-10 | 华为技术有限公司 | Method and apparatus for indicating data transmission |
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| BR112017006612A2 (en) * | 2014-09-30 | 2017-12-12 | Huawei Tech Co Ltd | data transmission method, terminal and base station |
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