CN107689841A - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
- Publication number
- CN107689841A CN107689841A CN201610628720.1A CN201610628720A CN107689841A CN 107689841 A CN107689841 A CN 107689841A CN 201610628720 A CN201610628720 A CN 201610628720A CN 107689841 A CN107689841 A CN 107689841A
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- Prior art keywords
- transmission
- base station
- terminal
- carrier units
- configured information
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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
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0612—Space-time modulation
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of data transmission method and device, the method comprising the steps of：When terminal receives the control information of base station transmission, determine whether the terminal only exists a carrier units, wherein, the control information is caused when the base station determines that the terminal supports the transmission means of up space division multiplexing；If the terminal only exists a carrier units, and the MCS index values of two transmission blocks are both greater than predetermined threshold value, the configured information of the carrier units is then encoded in described two transmission blocks, and described two transmission blocks are sent to by the base station according to the control information, so that the base station obtains the configured information of each carrier units by parsing described two transmission blocks.The present invention improves the reliability of data transfer between terminal and base station.
Description
Technical field
The present invention relates to communication technique field, more particularly to a kind of data transmission method and device.
Background technology
With LTE (Long Term Evolution, Long Term Evolution) systematic researches and development, in 3GPP (3rd
Generation Partnership Project, third generation partner program) in version, 3GPP Rel-8/Rel-9's
Up support single antenna transmissions, and upstream multi-antenna transmission is introduced in Rel-10, to support up PUSCH
(Physical Uplink Shared Channel, Physical Uplink Shared Channel) space division multiplexing and PUCCH (Physical
Uplink Control CHannel, physical uplink control channel) transmission diversity.If up using space division multiplexing,
2 TB of simultaneous transmission (Transport Block, transmission block) are understood on PUSCH, now CQI (Channel Quality
Indicator, the information instruction of channel quality) and PMI (Precoding Matrix Indicator, pre-coding matrix instruction)
It can be encoded on MCS (Mymova Checkin System, modulation and coding strategy) that higher TB of index value, MCS indexes
CQI and PMI will not be encoded by being worth in transport layer corresponding to relatively poor TB.
For uplink, each UE (User Equipment, user terminal) is in a TTI
(Transmission Time Interval, Transmission Time Interval) at most sends 2 TB and (gathered if being configured with up-link carrier
Close, each TTI at most sends 2 TB in each carrier units).Its TB to transport layer mapping with it is descending similar：For just passing
For, 1 transport layer only corresponds to 1 TB, and 2 TB correspond to 2 or more transport layers.And for HARQ (Hybrid
Automatic Repeat reQuest, hybrid automatic repeat-request) retransmit, a TB may be mapped to multilayer transmission.If
UE needs to send upstream data (having UL grant in corresponding subframe) on the PUSCH of some subframe, while needing to send out
Ascending control information is sent, then ascending control information will be multiplexed together with upstream data, be transmitted jointly on PUSCH.
When ascending control information is transmitting on PUSCH, CQI and PMI time division multiplexing into PUSCH, and use with it is up
Data division identical modulating mode.If up using space division multiplexing, on PUSCH can 2 TB of simultaneous transmission, now CQI and
PMI can be encoded on higher that coding TB of MCS index values, and space division multiplexing is used on each layer that the TB is be mapped to
Mode is multiplexed.CQI and PMI can be thus allowed to be transmitted on the best layer of channel condition (1 or 2 layer).That is, MCS
CQI and PMI will not be encoded corresponding to relatively poor TB on layer, causes terminal to be transferred to the CQI and PMI of base station by TB
Poor reliability.
The content of the invention
It is a primary object of the present invention to provide a kind of data transmission method and device, it is intended to solve existing terminal and base
The technical problem of data transmission credibility difference between standing.
To achieve the above object, a kind of data transmission method provided by the invention, the data transmission method include step：
When terminal receives the control information of base station transmission, determine whether the terminal only exists a carrier units,
Wherein, the control information is produced when the base station determines that the terminal supports the transmission means of up space division multiplexing
's；
If the terminal only exists a carrier units, and the MCS index values of two transmission blocks are both greater than predetermined threshold value, then
Encode the configured information of the carrier units in described two transmission blocks, and according to the control information by described two transmission
Block is sent to the base station, so that the instruction that the base station obtains each carrier units by parsing described two transmission blocks is believed
Breath.
Preferably, it is described when terminal receive base station transmission control information when, determine whether the terminal only exists one
After the step of individual carrier units, in addition to：
If the terminal has at least two carrier units, each carrier wave list is separately encoded in described two transmission blocks
The configured information of member, and described two transmission blocks are sent to by the base station according to the control information, so that the base station leads to
Cross and parse the configured information that described two transmission blocks obtain each carrier units.
Preferably, it is described so that the instruction that the base station obtains each carrier units by parsing described two transmission blocks is believed
The step of breath, includes：
Described two transmission blocks of the terminal transmission are received by the base station, described two transmission blocks is decoded, determines institute
State the configured information that a carrier units whether are only existed in two transmission blocks；
When the configured information that a carrier units are only existed in described two transmission blocks, and the finger in described two transmission blocks
When showing that value corresponding to information is inconsistent, as described in being used as the small configured information of the value corresponding to base station extraction configured information
The configured information of carrier units.
Preferably, if the terminal only exists a carrier units, MCS index values are selected in described two transmission blocks
Big transmission block is the first transmission block, and the small transmission block of MCS index values is the second transmission block；
Judge whether the MCS index values of first transmission block are more than the predetermined threshold value；
If the MCS index values of first transmission block are more than the predetermined threshold value, the MCS of second transmission block is judged
Whether index value is more than the predetermined threshold value.
Preferably, the step of whether the MCS index values for judging first transmission block are more than the predetermined threshold value it
Afterwards, in addition to：
If the MCS index values of first transmission block are less than or equal to the predetermined threshold value, in the described first transmission
The configured information is encoded in block, and first transmission block is sent to by the base station according to the control information, by described
Base station decodes first transmission block, obtains the configured information of the carrier units；
If the MCS index values of first transmission block are more than the predetermined threshold value, second transmission block is judged
MCS index values the step of whether being more than the predetermined threshold value after, in addition to：
If the MCS index values of second transmission block are less than or equal to the predetermined threshold value, in the described first transmission
The configured information is encoded in block, and first transmission block is sent to by the base station according to the control information, by described
Base station decodes first transmission block, obtains the configured information of the carrier units.
In addition, to achieve the above object, the present invention also provides a kind of data transmission device, the data transmission device bag
Include：
Determining module, for when receiving the control information of base station transmission, determining whether terminal only exists a carrier wave
Unit, wherein, the control information is when the base station determines that the terminal supports the transmission means when institute of up space division multiplexing
It is caused；
Coding module, if a carrier units are only existed for the terminal, and the MCS index values of two transmission blocks are all big
In predetermined threshold value, then the configured information of the carrier units is encoded in described two transmission blocks, and according to the control information
Described two transmission blocks are sent to the base station, so that the base station obtains each carrier wave by parsing described two transmission blocks
The configured information of unit.
Preferably, if the coding module is additionally operable to the terminal and at least two carrier units be present, described two
The configured information of each carrier units is separately encoded in transmission block, and is sent described two transmission blocks according to the control information
To the base station, so that the base station obtains the configured information of each carrier units by parsing described two transmission blocks.
Preferably, the coding module includes transmitting element, for two transmission blocks after coding indication information to be sent out
The base station is given, described two transmission blocks are received by the base station, described two transmission blocks is decoded, determines described two transmission
Whether the configured information of a carrier units is only existed in block；When the finger that a carrier units are only existed in described two transmission blocks
Show information, and when the value corresponding to the configured information in described two transmission blocks is inconsistent, configured information is extracted by the base station
Configured information of the small configured information of corresponding value as the carrier units.
Preferably, the data transmission device also includes：
Selecting module, if only existing a carrier units for the terminal, MCS is selected in described two transmission blocks
The big transmission block of index value is the first transmission block, and the small transmission block of MCS index values is the second transmission block；
Judge module, for judging whether the MCS index values of first transmission block are more than the predetermined threshold value；It is if described
The MCS index values of first transmission block are more than the predetermined threshold value, then judge whether the MCS index values of second transmission block are more than
The predetermined threshold value.
Preferably, if the coding module is additionally operable to the MCS index values of first transmission block less than or equal to described
Predetermined threshold value, then the configured information is encoded in first transmission block, and passed according to the control information by described first
Defeated piece is sent to the base station, decodes first transmission block by the base station, obtains the configured information of the carrier units；
If the MCS index values for being additionally operable to second transmission block are less than or equal to the predetermined threshold value, described
The configured information is encoded in one transmission block, and first transmission block is sent to by the base station according to the control information,
First transmission block is decoded by the base station, obtains the configured information of the carrier units.
The present invention works as the MSC index values of two transmission blocks by supporting the transmission means of up space division multiplexing when terminal
Both greater than predetermined threshold value when, the configured information of terminal carrier units all in encoding terminal in two transmission blocks, and coding is referred to
Show that two after information transmission blocks are sent to base station, the two transmission blocks are decoded by base station, obtain the finger of carrier units in terminal
Show information.Realize and be not restricted in two transmission blocks, only in the big transmission block of MSC index values coded carrier unit finger
Show information, can simultaneously in two transmission blocks coded carrier unit configured information, improve data between terminal and base station
The reliability of transmission.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of data transmission method first embodiment of the present invention；
Fig. 2 be in the embodiment of the present invention used by MCS index values and the coding indication information of transmission block coded system it
Between mapping relations a kind of schematic diagram；
Fig. 3 is the schematic flow sheet of data transmission method second embodiment of the present invention；
Fig. 4 is the high-level schematic functional block diagram of data transmission device preferred embodiment of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of data transmission method.
Reference picture 1, Fig. 1 are the schematic flow sheet of data transmission method first embodiment of the present invention.
In the present embodiment, the data transmission method includes：
Step S10, when terminal receives the control information of base station transmission, determine whether the terminal only exists a load
Ripple unit, wherein, the control information is when the base station determines that the terminal supports the transmission means of up space division multiplexing
It is caused；
In 3GPP LTE and LTE-A standard, base station is represented with eNB, it is corresponding with user terminal.In a TTI,
SRS (Sounding Reference Signal, Sounding Reference Signal), the SR (SCHedule that base station detection terminal reports
Request, dispatch request) or the information such as CQI.The SRS information that the base station is typically reported using the terminal is come the institute that obtains
State the uplink channel information of terminal；Under TDD (Time Division Duplexing, time division duplex) pattern, the base station
The uplink channel information of the terminal can be obtained using the CQI information that the terminal reports.The base station is according to the end
After end is initially accessed the base station, the ability of the terminal reporting message, detect whether the terminal supports up space division multiplexing
Transmission means.It is understood that the base station detects the transmission means whether terminal supports up space division multiplexing,
Whether 3GPP version is in more than Rel-10 where detecting the terminal.
When the terminal supports the transmission means of up space division multiplexing, the base station is configured to up to the terminal
The parameter of space division multiplexing.As the base station issues PUSCH-dedicatedConfigScell-Rel- in PUSCH-Config
10, and DCI is sent by PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel)
(Downlink Control Information, Downlink Control Information) format 4 is to the terminal.It should be noted that work as
When using the transmission means of space division multiplexing for up PUSCH, up PUSCH could support up the transmission of 4 antenna ports, i.e., at most
Support 4 layers of space division multiplexing.The base station indicates the terminal uses which kind of transmission means and institute by DCI format0 and 4
Base station is stated to carry out data transmission.During the terminal initial access base station, the base station can pass through
Some resources of RRCconnectionReconfiguration message arrangements, including PUSCH-DedicatedConfig
IE, this IE are exactly initial PUSCH configurations.
When the terminal receives the control information that the base station sends, that is, receive the DCI that the base station is sent
During format4, the terminal determines whether it is currently configured with CA (Carrier Aggregation, carrier aggregation), i.e., described
Terminal determines it is that it current no only exists a CC (Component Carrier, carrier units).It is it should be noted that described
Control information is caused when the base station determines that the terminal supports the transmission means of up space division multiplexing, and CA is by 2
Individual or more condenses together to support bigger transmission bandwidth (being up to 100MHz).The maximum bandwidth of each carrier units
For 20MHz, the corresponding independent cell of each carrier units, the terminal of carrier aggregation and 1 main plot and multiple are configured with
Secondary cell is connected.The transmission means of up space division multiplexing is generally used in carrier aggregation technology, and carrier aggregation technology at least needs 2
Individual cell.The terminal with the initial connection establishment of the base station during, or start connection re-establish during, institute
State terminal can work main band cell in, the cell is main plot；As the RRC (Radio between the terminal and the base station
Resource Control, wireless heterogeneous networks) establish after, the terminal is just operated in the cell on auxiliary frequency band, the cell
Referred to as secondary cell, now secondary cell may be configurable to provide extra Radio Resource.
Step S20, if the terminal only exists a carrier units, and the MCS index values of two transmission blocks are both greater than pre-
If threshold value, then the configured information of the carrier units is encoded in described two transmission blocks, and according to the control information by institute
State two transmission blocks and be sent to the base station, so that the base station obtains each carrier units by parsing described two transmission blocks
Configured information.
When the terminal only exists a carrier units, i.e., when not configuring carrier aggregation in described terminal, the terminal is sentenced
Whether the MCS index values of two transmission blocks in a disconnected TTI are more than predetermined threshold value.The predetermined threshold value can be according to specific need
Want and set.
It should be noted that a transmission block is exactly to include MAC (Media Access Control, medium access control)
PDU (Protocol Data Unit, a protocol Data Unit) data block, this data block can be transmitted on a TTI,
And the unit that HARQ is retransmitted.LTE is provided：It can at most send two transmission blocks for each one TTI of terminal, i.e., it is each whole
End at most sends two transmission blocks in a TTI.
Further, the data transmission method also includes：
Step A, if the terminal only exists a carrier units, MCS index values are selected in described two transmission blocks
Big transmission block is the first transmission block, and the small transmission block of MCS index values is the second transmission block；
Step B, judges whether the MCS index values of first transmission block are more than the predetermined threshold value；
Step C, if the MCS index values of first transmission block are more than the predetermined threshold value, judge second transmission
Whether the MCS index values of block are more than the predetermined threshold value.
If the terminal only exists a carrier units, the terminal determines the MCS index values of described two transmission blocks
Magnitude relationship, the first transmission block is designated as by the big transmission block of MCS index values, and the small transmission block of MCS index values is designated as into the second biography
Defeated piece.After the terminal determines the magnitude relationship of MCS index values in described two transmission blocks, the terminal judges described
Whether the MCS index values of one transmission block are more than the predetermined threshold value.If the MCS index values of first transmission block are more than described pre-
If threshold value, the terminal further judges whether the MCS index values of second transmission block are more than the predetermined threshold value.
When the MCS index values of described two transmission blocks are both greater than the predetermined threshold value, the terminal is then described two
The configured information of the carrier units is encoded in transmission block, and described two transmission blocks are sent to by institute according to the control information
Base station is stated, i.e., by the transmission means of up space division multiplexing, the transmission block is sent to the base station, decoded by the base station
Described two transmission blocks, the configured information of the carrier units is obtained, and determine to carry in the terminal according to the configured information
The channel quality of ripple unit.
Further, the data transmission method also includes：
Step D, described two transmission blocks of the terminal transmission are received by the base station, decode described two transmission blocks,
Determine whether to only exist the configured information of a carrier units in described two transmission blocks；
Step E, when the configured information that a carrier units are only existed in described two transmission blocks, and described two transmission blocks
In configured information corresponding to value it is inconsistent when, made as the small configured information of value corresponding to base station extraction configured information
For the configured information of the carrier units.
When the base station receives two transmission blocks that the terminal is sent, the base station uses to be encoded with the terminal
The configured information identical mode decodes the transmission block, obtains the configured information in two transmission blocks, and determines described two
Whether the configured information of a carrier units is only existed in individual transmission block.If a carrier wave list is only existed in described two transmission blocks
The configured information of member, the base station then judges whether the value corresponding to the configured information in two transmission blocks is consistent.If two biographies
Value in defeated piece corresponding to configured information is consistent, and the value according to corresponding to the configured information is then determined the end by the base station
The channel quality of carrier units in end；If the value in described two transmission blocks corresponding to configured information is inconsistent, the base station is then
In two transmission blocks, finger of the small configured information of corresponding value of configured information as carrier units in the terminal is being selected
Show information, the value according to corresponding to the configured information determines the channel quality of carrier units in the terminal, with described in guarantee
The reliability of configured information transmitted by terminal, the base station is set more accurately to learn the current channel quality of the terminal.
Further, after the step B, in addition to：If the MCS index values of first transmission block are less than or equal to
The predetermined threshold value, then encode the configured information in first transmission block, and according to the control information by described
One transmission block is sent to the base station, and first transmission block is decoded by the base station, obtains the instruction letter of the carrier units
Breath；
After the step C, if in addition to the MCS index values of second transmission block be less than or equal to the default threshold
Value, then encode the configured information, and send out first transmission block according to the control information in first transmission block
The base station is given, first transmission block is decoded by the base station, obtains the configured information of the carrier units.
When the MCS index values of first transmission block are less than or equal to the predetermined threshold value, the terminal is described
Configured information in first transmission block corresponding to coded carrier unit, and sent out first transmission block according to the control information
The base station is given, first transmission block is decoded by the base station, the configured information in first transmission block is obtained, produces
To the configured information of the carrier units.Wherein, the configured information is CQI and PMI, and the CQI is the information of channel quality
Instruction, represents the quality of present channel quality, and the signal to noise ratio size of channel is corresponding, span 0~31.The PMI is
Refer to only under this emission mode of Closed-Loop Spatial Multiplexing, terminal tells base station should be using which type of pre-coding matrix come to the end
The PDSCH channels at end carry out precoding.Wherein, the terminal can determine which kind of mode and institute used according to the control information
Base station is stated to carry out data transmission.
When the MCS index values of second transmission block are less than or equal to the predetermined threshold value, the terminal is described
Configured information in first transmission block corresponding to coded carrier unit, and sent out first transmission block according to the control information
The base station is given, first transmission block is decoded by the base station, the configured information in first transmission block is obtained, produces
To the configured information of the carrier units.
Wherein, coded system corresponding to the MCS includes but is not limited to QPSK (Quadrature Phase Shift
Keyin, QPSK), 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) and
64QAM etc..It should be noted that the terminal encodes the mode of the configured information and the decryption biography in transmission block
Defeated piece of mode is the same, as described in being encoded when the terminal using QPSK in transmission block during configured information, the base station
Also the transmission block is decoded using QPSK.
It is understood that when have in described two transmission blocks the MCS index values in one of transmission block be less than or
During equal to the predetermined threshold value, the terminal is by the transmission means of up space division multiplexing, in the big transmission block of MCS index values
The configured information is encoded, no longer encodes the configured information in the small transmission block of MCS index values.
Specifically, reference picture 2, Fig. 2 are adopted by the MCS index values of transmission block in the embodiment of the present invention with coding indication information
A kind of schematic diagram of mapping relations between coded system.In described Fig. 2, Modulation Order QmRepresent to adjust
Mode processed, i.e. coded system, 2 corresponding QPSK, 4 corresponding 16QAM, 6 corresponding 64QAM.MCS Index IMCSCorresponding is MCS ropes
Draw value, scope is 1~31.MCS point is up MCS, descending MCS, descending MCS；It is divided into the MCS of code word 0 and the MCS of code word 1 again.
TBS Index ITBSIt is the index of corresponding transmission block, the size of corresponding transmission block can be obtained by the index.
Redundancy Version rvidxIt is data required when calculating transmission block position.From described Fig. 3, for 0≤IMCS
In the range of≤28, modulation system used in transmission block corresponding to MCS index values 0~10 is QPSK, 10~20 pairs of MCS index values
Modulation system used in the transmission block answered is 16QAM, modulation system used in transmission block corresponding to MCS index values 21~28
For 64QAM.It is 29≤I in MCS index valuesMCS≤ 31, if MCS index values IMCS=29, modulation system QPSK.Otherwise, adjust
Magnitude processed is from for using 0≤IMCSThe DCI that is transmitted in the PDCCH with DCI format0 of≤28 same transmission determines
It is fixed.
The present embodiment works as the MSC of two transmission blocks by the transmission means by supporting up space division multiplexing when terminal
When index value is both greater than predetermined threshold value, the configured information of terminal carrier units all in encoding terminal in two transmission blocks, and will
Two transmission blocks after coding indication information are sent to base station, decode the two transmission blocks by base station, obtain carrier wave list in terminal
The configured information of member.Realize and be not restricted in two transmission blocks, only the coded carrier list in the big transmission block of MSC index values
The configured information of member, can simultaneously in two transmission blocks coded carrier unit configured information, improve terminal and base station it
Between data transfer reliability.
Reference picture 3, Fig. 3 are the schematic flow sheet of the second embodiment of data transmission method of the present invention, are implemented based on first
Example proposes the second embodiment of data transmission method of the present invention.
In the present embodiment, the data transmission method also includes：
Step S30, if the terminal has at least two carrier units, it is separately encoded in described two transmission blocks each
The configured information of individual carrier units, and described two transmission blocks are sent to by the base station according to the control information, so that institute
State the configured information that base station obtains each carrier units by parsing described two transmission blocks.
When at least two carrier units in the terminal be present, i.e., be configured with carrier aggregation in described terminal, the end
End is then separately encoded the configured information of each carrier units in two transmission blocks.When the terminal is completed in two transmission blocks
After the coding of the configured information of each carrier units, the terminal will encode each carrier units according to the control information
Transmission block be sent to the base station.When the base station receives two transmission blocks that the terminal is sent, the base station solution
Two transmission blocks of code, obtain the configured information of each carrier units in two transmission blocks, the end are determined according to the configured information
The channel quality of each carrier units in end.
Further, when at least two carrier units in the terminal be present, the terminal is sent to by transmission block
During the base station, the terminal can determine to correspond to the carrier units of main plot, Ran Houtong in each carrier units
Cross main plot and the transmission block for the configured information for encoding each carrier units is sent to the base station；Or respectively by each
Cell corresponding to carrier units, the transmission block for the configured information for encoding each carrier units is sent to the base station.
The present embodiment in two transmission blocks by when multiple carrier units in terminal be present, being separately encoded each carrier wave
The configured information of unit, the configured information of each carrier units is sent to base station, improves the handling capacity of terminal, and LTE-
The data performance of A systems.
The present invention further provides a kind of data transmission device.
Reference picture 4, Fig. 4 are the high-level schematic functional block diagram of data transmission device preferred embodiment of the present invention.
In the present embodiment, the data transmission device includes：
Determining module 10, for when receiving the control information of base station transmission, determining whether terminal only exists a load
Ripple unit, wherein, the control information is when the base station determines that the terminal supports the transmission means of up space division multiplexing
It is caused；
In 3GPP LTE and LTE-A standard, base station is represented with eNB, it is corresponding with user terminal.In a TTI,
SRS (Sounding Reference Signal, Sounding Reference Signal), the SR (SCHedule that base station detection terminal reports
Request, dispatch request) or the information such as CQI.The SRS information that the base station is typically reported using the terminal is come the institute that obtains
State the uplink channel information of terminal；Under TDD (Time Division Duplexing, time division duplex) pattern, the base station
The uplink channel information of the terminal can be obtained using the CQI information that the terminal reports.The base station is according to the end
After end is initially accessed the base station, the ability of the terminal reporting message, detect whether the terminal supports up space division multiplexing
Transmission means.It is understood that the base station detects the transmission means whether terminal supports up space division multiplexing,
Whether 3GPP version is in more than Rel-10 where detecting the terminal.
When the terminal supports the transmission means of up space division multiplexing, the base station is configured to up to the terminal
The parameter of space division multiplexing.As the base station issues PUSCH-dedicatedConfigScell-Rel- in PUSCH-Config
10, and DCI is sent by PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel)
(Downlink Control Information, Downlink Control Information) format 4 is to the terminal.It should be noted that work as
When using the transmission means of space division multiplexing for up PUSCH, up PUSCH could support up the transmission of 4 antenna ports, i.e., at most
Support 4 layers of space division multiplexing.The base station indicates the terminal uses which kind of transmission means and institute by DCI format0 and 4
Base station is stated to carry out data transmission.During the terminal initial access base station, the base station can pass through
Some resources of RRCconnectionReconfiguration message arrangements, including PUSCH-DedicatedConfig
IE, this IE are exactly initial PUSCH configurations.
When the terminal receives the control information that the base station sends, that is, receive the DCI that the base station is sent
During format4, the terminal determines whether it is currently configured with CA (Carrier Aggregation, carrier aggregation), i.e., described
Terminal determines it is that it current no only exists a CC (Component Carrier, carrier units).It is it should be noted that described
Control information is caused when the base station determines that the terminal supports the transmission means of up space division multiplexing, and CA is by 2
Individual or more condenses together to support bigger transmission bandwidth (being up to 100MHz).The maximum bandwidth of each carrier units
For 20MHz, the corresponding independent cell of each carrier units, the terminal of carrier aggregation and 1 main plot and multiple are configured with
Secondary cell is connected.The transmission means of up space division multiplexing is generally used in carrier aggregation technology, and carrier aggregation technology at least needs 2
Individual cell.The terminal with the initial connection establishment of the base station during, or start connection re-establish during, institute
State terminal can work main band cell in, the cell is main plot；As the RRC (Radio between the terminal and the base station
Resource Control, wireless heterogeneous networks) establish after, the terminal is just operated in the cell on auxiliary frequency band, the cell
Referred to as secondary cell, now secondary cell may be configurable to provide extra Radio Resource.
Coding module 20, if a carrier units are only existed for the terminal, and the MCS index values of two transmission blocks are all
More than predetermined threshold value, then the configured information of the carrier units is encoded in described two transmission blocks, and believed according to the control
Described two transmission blocks are sent to the base station by breath, so that the base station obtains each load by parsing described two transmission blocks
The configured information of ripple unit.
When the terminal only exists a carrier units, i.e., when not configuring carrier aggregation in described terminal, the terminal is sentenced
Whether the MCS index values of two transmission blocks in a disconnected TTI are more than predetermined threshold value.The predetermined threshold value can be according to specific need
Want and set.
It should be noted that a transmission block is exactly to include MAC (Media Access Control, medium access control)
PDU (Protocol Data Unit, a protocol Data Unit) data block, this data block can be transmitted on a TTI,
And the unit that HARQ is retransmitted.LTE is provided：It can at most send two transmission blocks for each one TTI of terminal, i.e., it is each whole
End at most sends two transmission blocks in a TTI.
Further, the data transmission device also includes：
Selecting module, if only existing a carrier units for the terminal, MCS is selected in described two transmission blocks
The big transmission block of index value is the first transmission block, and the small transmission block of MCS index values is the second transmission block；
Judge module, for judging whether the MCS index values of first transmission block are more than the predetermined threshold value；
If the MCS index values that the judge module is additionally operable to first transmission block are more than the predetermined threshold value, judge
Whether the MCS index values of second transmission block are more than the predetermined threshold value.
If the terminal only exists a carrier units, the terminal determines the MCS index values of described two transmission blocks
Magnitude relationship, the first transmission block is designated as by the big transmission block of MCS index values, and the small transmission block of MCS index values is designated as into the second biography
Defeated piece.After the terminal determines the magnitude relationship of MCS index values in described two transmission blocks, the terminal judges described
Whether the MCS index values of one transmission block are more than the predetermined threshold value.If the MCS index values of first transmission block are more than described pre-
If threshold value, the terminal further judges whether the MCS index values of second transmission block are more than the predetermined threshold value.
When the MCS index values of described two transmission blocks are both greater than the predetermined threshold value, the terminal is then described two
The configured information of the carrier units is encoded in transmission block, and described two transmission blocks are sent to by institute according to the control information
Base station is stated, i.e., by the transmission means of up space division multiplexing, the transmission block is sent to the base station, decoded by the base station
Described two transmission blocks, the configured information of the carrier units is obtained, and determine to carry in the terminal according to the configured information
The channel quality of ripple unit.
Further, the coding module 20 includes transmitting element, for two after coding indication information to be transmitted
Block is sent to the base station, receives described two transmission blocks by the base station, decodes described two transmission blocks, determine described two
Whether the configured information of a carrier units is only existed in transmission block；When only existing a carrier units in described two transmission blocks
Configured information, and when value corresponding to the configured information in described two transmission blocks is inconsistent, is extracted and indicated by the base station
Configured information of the small configured information of value corresponding to information as the carrier units.
When the base station receives two transmission blocks that the terminal is sent, the base station uses to be encoded with the terminal
The configured information identical mode decodes the transmission block, obtains the configured information in two transmission blocks, and determines described two
Whether the configured information of a carrier units is only existed in individual transmission block.If a carrier wave list is only existed in described two transmission blocks
The configured information of member, the base station then judges whether the value corresponding to the configured information in two transmission blocks is consistent.If two biographies
Value in defeated piece corresponding to configured information is consistent, and the value according to corresponding to the configured information is then determined the end by the base station
The channel quality of carrier units in end；If the value in described two transmission blocks corresponding to configured information is inconsistent, the base station is then
In two transmission blocks, finger of the small configured information of corresponding value of configured information as carrier units in the terminal is being selected
Show information, the value according to corresponding to the configured information determines the channel quality of carrier units in the terminal, with described in guarantee
The reliability of configured information transmitted by terminal, the base station is set more accurately to learn the current channel quality of the terminal.
Further, if the MCS index values that the coding module 20 is additionally operable to first transmission block are less than or equal to
The predetermined threshold value, then encode the configured information in first transmission block, and according to the control information by described
One transmission block is sent to the base station, and first transmission block is decoded by the base station, obtains the instruction letter of the carrier units
Breath；
If the MCS index values for being additionally operable to second transmission block are less than or equal to the predetermined threshold value, described
The configured information is encoded in one transmission block, and first transmission block is sent to by the base station according to the control information,
First transmission block is decoded by the base station, obtains the configured information of the carrier units.
When the MCS index values of first transmission block are less than or equal to the predetermined threshold value, the terminal is described
Configured information in first transmission block corresponding to coded carrier unit, and sent out first transmission block according to the control information
The base station is given, first transmission block is decoded by the base station, the configured information in first transmission block is obtained, produces
To the configured information of the carrier units.Wherein, the configured information is CQI and PMI, and the CQI is the information of channel quality
Instruction, represents the quality of present channel quality, and the signal to noise ratio size of channel is corresponding, span 0~31.The PMI is
Refer to only under this emission mode of Closed-Loop Spatial Multiplexing, terminal tells base station should be using which type of pre-coding matrix come to the end
The PDSCH channels at end carry out precoding.Wherein, the terminal can determine which kind of mode and institute used according to the control information
Base station is stated to carry out data transmission.
When the MCS index values of second transmission block are less than or equal to the predetermined threshold value, the terminal is described
Configured information in first transmission block corresponding to coded carrier unit, and sent out first transmission block according to the control information
The base station is given, first transmission block is decoded by the base station, the configured information in first transmission block is obtained, produces
To the configured information of the carrier units.
Wherein, coded system corresponding to the MCS includes but is not limited to QPSK (Quadrature PhaseShift
Keyin, QPSK), 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) and
64QAM etc..It should be noted that the terminal encodes the mode of the configured information and the decryption biography in transmission block
Defeated piece of mode is the same, as described in being encoded when the terminal using QPSK in transmission block during configured information, the base station
Also the transmission block is decoded using QPSK.
It is understood that when have in described two transmission blocks the MCS index values in one of transmission block be less than or
During equal to the predetermined threshold value, the terminal is by the transmission means of up space division multiplexing, in the big transmission block of MCS index values
The configured information is encoded, no longer encodes the configured information in the small transmission block of MCS index values.
Specifically, reference picture 2, Fig. 2 are adopted by the MCS index values of transmission block in the embodiment of the present invention with coding indication information
A kind of schematic diagram of mapping relations between coded system.In described Fig. 2, Modulation Order QmRepresent to adjust
Mode processed, i.e. coded system, 2 corresponding QPSK, 4 corresponding 16QAM, 6 corresponding 64QAM.MCS Index IMCSCorresponding is MCS ropes
Draw value, scope is 1~31.MCS point is up MCS, descending MCS, descending MCS；It is divided into the MCS of code word 0 and the MCS of code word 1 again.
TBS Index ITBSIt is the index of corresponding transmission block, the size of corresponding transmission block can be obtained by the index.
Redundancy Version rvidxIt is data required when calculating transmission block position.From described Fig. 3, for 0≤IMCS
In the range of≤28, modulation system used in transmission block corresponding to MCS index values 0~10 is QPSK, 10~20 pairs of MCS index values
Modulation system used in the transmission block answered is 16QAM, modulation system used in transmission block corresponding to MCS index values 21~28
For 64QAM.It is 29≤I in MCS index valuesMCS≤ 31, if MCS index values IMCS=29, modulation system QPSK.Otherwise, adjust
Magnitude processed is from for using 0≤IMCSThe DCI that is transmitted in the PDCCH with DCI format0 of≤28 same transmission determines
It is fixed.
The present embodiment works as the MSC of two transmission blocks by the transmission means by supporting up space division multiplexing when terminal
When index value is both greater than predetermined threshold value, the configured information of terminal carrier units all in encoding terminal in two transmission blocks, and will
Two transmission blocks after coding indication information are sent to base station, decode the two transmission blocks by base station, obtain carrier wave list in terminal
The configured information of member.Realize and be not restricted in two transmission blocks, only the coded carrier list in the big transmission block of MSC index values
The configured information of member, can simultaneously in two transmission blocks coded carrier unit configured information, improve terminal and base station it
Between data transfer reliability.
With continued reference to Fig. 4, the second embodiment of data transmission device of the present invention is proposed.
In the present embodiment, if the coding module 20 is additionally operable to the terminal and at least two carrier units be present,
It is separately encoded the configured information of each carrier units in described two transmission blocks, and according to the control information by described two biographies
Defeated piece is sent to the base station, so that the instruction that the base station obtains each carrier units by parsing described two transmission blocks is believed
Breath.
When at least two carrier units in the terminal be present, i.e., be configured with carrier aggregation in described terminal, the end
End is then separately encoded the configured information of each carrier units in two transmission blocks.When the terminal is completed in two transmission blocks
After the coding of the configured information of each carrier units, the terminal will encode each carrier units according to the control information
Transmission block be sent to the base station.When the base station receives two transmission blocks that the terminal is sent, the base station solution
Two transmission blocks of code, obtain the configured information of each carrier units in two transmission blocks, the end are determined according to the configured information
The channel quality of each carrier units in end.
Further, when at least two carrier units in the terminal be present, the terminal is sent to by transmission block
During the base station, the terminal can determine to correspond to the carrier units of main plot, Ran Houtong in each carrier units
Cross main plot and the transmission block for the configured information for encoding each carrier units is sent to the base station；Or respectively by each
Cell corresponding to carrier units, the transmission block for the configured information for encoding each carrier units is sent to the base station.
The present embodiment in two transmission blocks by when multiple carrier units in terminal be present, being separately encoded each carrier wave
The configured information of unit, the configured information of each carrier units is sent to base station, improves the handling capacity of terminal, and LTE-
The data performance of A systems.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, computer, clothes
Be engaged in device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of data transmission method, it is characterised in that the data transmission method comprises the following steps：
When terminal receives the control information of base station transmission, determine whether the terminal only exists a carrier units, wherein,
The control information is caused when the base station determines that the terminal supports the transmission means of up space division multiplexing；
If the terminal only exists a carrier units, and the MCS index values of two transmission blocks are both greater than predetermined threshold value, then in institute
The configured information that the carrier units are encoded in two transmission blocks is stated, and is sent out described two transmission blocks according to the control information
The base station is given, so that the base station obtains the configured information of each carrier units by parsing described two transmission blocks.
2. data transmission method as claimed in claim 1, it is characterised in that the control that base station transmission is received when terminal
During information, after determining the step of whether terminal only exists a carrier units, in addition to：
If the terminal has at least two carrier units, each carrier units are separately encoded in described two transmission blocks
Configured information, and described two transmission blocks are sent to by the base station according to the control information, so that the base station passes through solution
Analyse the configured information that described two transmission blocks obtain each carrier units.
3. data transmission method as claimed in claim 1, it is characterised in that described so that the base station is by parsing described two
The step of configured information of each carrier units of individual transmission block acquisition, includes：
Described two transmission blocks of the terminal transmission are received by the base station, described two transmission blocks is decoded, determines described two
Whether the configured information of a carrier units is only existed in individual transmission block；
When the configured information that a carrier units are only existed in described two transmission blocks, and the instruction letter in described two transmission blocks
When the corresponding value of breath is inconsistent, as the small configured information of the value corresponding to base station extraction configured information as the carrier wave
The configured information of unit.
4. the data transmission method as described in any one of claims 1 to 3, it is characterised in that if the terminal only exists one
Carrier units, then it is the first transmission block that the big transmission block of MCS index values is selected in described two transmission blocks, and MCS index values are small
Transmission block be the second transmission block；
Judge whether the MCS index values of first transmission block are more than the predetermined threshold value；
If the MCS index values of first transmission block are more than the predetermined threshold value, the MCS indexes of second transmission block are judged
Whether value is more than the predetermined threshold value.
5. data transmission method as claimed in claim 4, it is characterised in that the MCS ropes for judging first transmission block
After drawing the step of whether value is more than the predetermined threshold value, in addition to：
If the MCS index values of first transmission block are less than or equal to the predetermined threshold value, in first transmission block
The configured information is encoded, and first transmission block is sent to by the base station according to the control information, by the base station
First transmission block is decoded, obtains the configured information of the carrier units；
If the MCS index values of first transmission block are more than the predetermined threshold value, the MCS of second transmission block is judged
After the step of whether index value is more than the predetermined threshold value, in addition to：
If the MCS index values of second transmission block are less than or equal to the predetermined threshold value, in first transmission block
The configured information is encoded, and first transmission block is sent to by the base station according to the control information, by the base station
First transmission block is decoded, obtains the configured information of the carrier units.
6. a kind of data transmission device, it is characterised in that the data transmission device includes：
Determining module, for when receiving the control information of base station transmission, determining whether terminal only exists a carrier units,
Wherein, the control information is produced when the base station determines that the terminal supports the transmission means of up space division multiplexing
's；
Coding module, if a carrier units are only existed for the terminal, and the MCS index values of two transmission blocks are both greater than pre-
If threshold value, then the configured information of the carrier units is encoded in described two transmission blocks, and according to the control information by institute
State two transmission blocks and be sent to the base station, so that the base station obtains each carrier units by parsing described two transmission blocks
Configured information.
7. data transmission device as claimed in claim 6, it is characterised in that if the coding module is additionally operable to the terminal and deposited
In at least two carrier units, then the configured information of each carrier units is separately encoded in described two transmission blocks, and according to
Described two transmission blocks are sent to the base station by the control information, so that the base station is by parsing described two transmission blocks
Obtain the configured information of each carrier units.
8. data transmission device as claimed in claim 6, it is characterised in that the coding module includes transmitting element, is used for
Two transmission blocks after coding indication information are sent to the base station, described two transmission blocks, solution are received by the base station
The described two transmission blocks of code, determine the configured information of a carrier units whether is only existed in described two transmission blocks；When described
The configured information of a carrier units is only existed in two transmission blocks, and corresponding to the configured information in described two transmission blocks
When being worth inconsistent, as instruction of the small configured information of the value corresponding to base station extraction configured information as the carrier units
Information.
9. the data transmission device as described in any one of claim 6 to 8, it is characterised in that the data transmission device also wraps
Include：
Selecting module, if only existing a carrier units for the terminal, MCS indexes are selected in described two transmission blocks
It is the first transmission block to be worth big transmission block, and the small transmission block of MCS index values is the second transmission block；
Judge module, for judging whether the MCS index values of first transmission block are more than the predetermined threshold value；If described first
Whether the MCS index values of transmission block are more than the predetermined threshold value, then judge the MCS index values of second transmission block more than described
Predetermined threshold value.
10. data transmission device as claimed in claim 9, it is characterised in that if the coding module is additionally operable to described first
The MCS index values of transmission block are less than or equal to the predetermined threshold value, then the instruction letter is encoded in first transmission block
Breath, and first transmission block is sent to by the base station according to the control information, passed by base station decoding described first
Defeated piece, obtain the configured information of the carrier units；
If the MCS index values for being additionally operable to second transmission block are less than or equal to the predetermined threshold value, passed described first
The configured information is encoded in defeated piece, and first transmission block is sent to by the base station according to the control information, by institute
State base station and decode first transmission block, obtain the configured information of the carrier units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628720.1A CN107689841A (en) | 2016-08-03 | 2016-08-03 | Data transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628720.1A CN107689841A (en) | 2016-08-03 | 2016-08-03 | Data transmission method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107689841A true CN107689841A (en) | 2018-02-13 |
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ID=61151340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610628720.1A Pending CN107689841A (en) | 2016-08-03 | 2016-08-03 | Data transmission method and device |
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| CN (1) | CN107689841A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798286A (en) * | 2018-08-03 | 2020-02-14 | 电信科学技术研究院有限公司 | Data retransmission method, device and terminal |
| WO2020156214A1 (en) * | 2019-01-31 | 2020-08-06 | 华为技术有限公司 | Power control method and terminal device |
| CN112188524A (en) * | 2020-09-25 | 2021-01-05 | 无锡职业技术学院 | Method for enhancing transmission performance of wireless ad hoc network link |
| CN112436922A (en) * | 2020-11-25 | 2021-03-02 | Oppo（重庆）智能科技有限公司 | MCS scheduling method, terminal equipment, network equipment and storage medium |
-
2016
- 2016-08-03 CN CN201610628720.1A patent/CN107689841A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798286A (en) * | 2018-08-03 | 2020-02-14 | 电信科学技术研究院有限公司 | Data retransmission method, device and terminal |
| CN110798286B (en) * | 2018-08-03 | 2020-08-11 | 电信科学技术研究院有限公司 | Data retransmission method, device and terminal |
| WO2020156214A1 (en) * | 2019-01-31 | 2020-08-06 | 华为技术有限公司 | Power control method and terminal device |
| CN112188524A (en) * | 2020-09-25 | 2021-01-05 | 无锡职业技术学院 | Method for enhancing transmission performance of wireless ad hoc network link |
| CN112436922A (en) * | 2020-11-25 | 2021-03-02 | Oppo（重庆）智能科技有限公司 | MCS scheduling method, terminal equipment, network equipment and storage medium |
| CN112436922B (en) * | 2020-11-25 | 2022-05-20 | Oppo（重庆）智能科技有限公司 | MCS scheduling method, terminal equipment, network equipment and storage medium |
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Application publication date: 20180213 |