CN105072690B - Data transmission method based on unlicensed spectrum and device - Google Patents
Data transmission method based on unlicensed spectrum and device Download PDFInfo
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- CN105072690B CN105072690B CN201510564589.2A CN201510564589A CN105072690B CN 105072690 B CN105072690 B CN 105072690B CN 201510564589 A CN201510564589 A CN 201510564589A CN 105072690 B CN105072690 B CN 105072690B
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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
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of data transmission method and device based on unlicensed spectrum, wherein the data transmission method based on unlicensed spectrum, including：Receive the upstream dispatching instructions that base station is sent；According to the upstream dispatching instructions, determine the base station for the frequency resource in the unlicensed spectrum of the terminal distribution；Detect whether the channel in the frequency resource is in idle condition；When the channel on detecting the frequency resource is in idle condition, the channel persistently occupied in the frequency resource transmits upstream data to the base station.Technical solution through the invention, it can be in the channel idle for detecting unlicensed spectrum, persistently occupy the transmission upstream data of unlicensed spectrum, reduce the detection time of the channel of unlicensed spectrum, terminal is improved during transmitting upstream data to the channel utilization of unlicensed spectrum, while also improving the efficiency of transmission of upstream data.
Description
Technical field
The present invention relates to fields of communication technology, in particular to a kind of data transmission method based on unlicensed spectrum
With a kind of data transmission device based on unlicensed spectrum.
Background technology
3GPP normal structures have passed through in RAN#65 plenary session of TSG based on LTE (Long Term Evolution, length
Phase evolution) LAA (Licensed-Assisted Access, auxiliary access) research project project verification, which mainly grinds
Study carefully and how to dispose LTE network in unlicensed spectrum, effectively utilizes unlicensed spectrum to reach justice, improve LTE system
Message transmission rate purpose.
LTE to the use of unlicensed spectrum there are two types of mode, one is：Unauthorized frequency is only used in downlink data transmission
Spectrum；Another kind is：It can use unlicensed spectrum, uplink and downlink multiple in a time division manner in uplink and downlink data transmission
For mode on the same unauthorized carrier wave, such time division multiplexing mode is distinct from TDD (the Time Division in LTE
Duplexing) pattern, uplink and downlink there is no specific frame structure, any moment be likely to carry out uplink or
Downlink transfer.
It is authorized on frequency spectrum when LTE system is deployed in, terminal does not need to CCA (Clear Channel before transmitting data
Access, clear channel assessment (CCA)) detection, receive the UL- of eNodeB (Evolved Node B, evolved Node B) in terminal
When grant (upstream dispatching instructions), the transmission data in the corresponding sub-frame of uplink of the UL-grant.Under normal circumstances, currently
LTE system uses dynamic dispatching mode transmission data, i.e. a UL-grant instruction, corresponds only to a sub-frame of uplink.Terminal
The UL-grant instructions that an eNodeB is sent often are received, it can only be in a subframe corresponding with UL-grant (when a subframe
Between length be 1 millisecond) interior transmission data.
Terminal need by it is non-award phase frequency spectrum come transmission data when, if by the dynamic dispatching mode in current LTE system
It is used in the LAA systems of unlicensed spectrum, it will cause the reductions of the uplink spectrum utilization rate of terminal, the reason is that：Terminal is being received
To after the UL-grant instructions of eNodeB, the frequency resource first indicate to UL-grant progress CCA detections are needed, when detecting letter
The frequency resource could be occupied when the road free time.And CCA detections are also to need to occupy regular hour resource, such as examine in CCA
The time spent in common LBE (Load based equipment, support type equipment) mode in survey, Channel Detection often as high as
Hundreds of microseconds, if still using the dynamic dispatching mode in current LTE system, terminal receives UL-grant every time can only send 1
The data of millisecond, then channel utilization will be very low.
Therefore, how to improve terminal becomes the channel utilization of unlicensed spectrum during transmitting upstream data
Technical problem urgently to be resolved hurrily.
Invention content
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of new data based on unlicensed spectrum
Transmission plan can persistently occupy the transmission uplink of unlicensed spectrum in the channel idle for detecting unlicensed spectrum
Data reduce the detection time of the channel of unlicensed spectrum, improve terminal during transmitting upstream data to unauthorized
The channel utilization of frequency spectrum, while also improving the efficiency of transmission of upstream data.
In view of this, the present invention proposes a kind of data transmission method based on unlicensed spectrum, including：Receive base station hair
The upstream dispatching instructions sent；According to the upstream dispatching instructions, determine that the base station is the unlicensed spectrum of the terminal distribution
On frequency resource；Detect whether the channel in the frequency resource is in idle condition；On detecting the frequency resource
Channel when being in idle condition, the channel persistently occupied in the frequency resource transmits upstream data to the base station.
In the technical scheme, by receiving the upstream dispatching instructions of base station transmission to determine base station as the non-of terminal distribution
The frequency resource on frequency spectrum is authorized, and detects whether the channel in frequency resource is in idle condition, to detect frequency money
When channel on source is in idle condition, the channel continued in acquisition frequency resource transmits upstream data to base station so that terminal
When transmitting upstream data by unlicensed spectrum, it is only necessary to carry out a secondary channel inspection to the channel in the frequency resource of distribution
It surveys, and when confirming the channel idle, so that it may upstream data be transmitted with lasting occupancy channel, avoid terminal by non-
The problem of needing repeatedly to carry out Channel Detection and reduce the channel utilization to unlicensed spectrum in mandate spectrum transmissions data procedures,
The detection time for greatly reducing channel, improves the channel utilization of unlicensed spectrum, while improving the biography of upstream data
Defeated efficiency.
Specifically, when terminal needs to transmit upstream data by unlicensed spectrum, if upper line number to be transmitted in terminal
According to needing 10 subframes (assuming that a subframe time length is 1 millisecond) that transformation task could be completed, then terminal only need to be in head
Secondary to carry out a Channel Detection when receiving upstream dispatching instructions, the channel in frequency resource to determine distribution is in idle shape
State, so that it may upstream data is transmitted to need persistently to occupy 10 subframes in the process after, and different from the related technology：If terminal
Transformation task is completed, then at the end of each sub-frame transmission in above-mentioned 10 subframes, is both needed to re-start Channel Detection, is increased
Add the time of Channel Detection, while cannot constantly transmit upstream data.As it can be seen that when detecting that the channel of unlicensed spectrum is empty
Idle persistently occupies the transmission upstream data of unlicensed spectrum, substantially increases the channel utilization to unlicensed spectrum,
The efficiency of transmission of upstream data is also improved simultaneously.
In the above-mentioned technical solutions, it is preferable that the channel in the lasting occupancy frequency resource is transmitted to the base station
After the step of upstream data, further include：Judge whether the duration for persistently occupying the channel in the frequency resource reaches default
Duration；When judging that the duration for persistently occupying the channel in the frequency resource is not up to the preset duration, institute is held over
The channel stated in frequency resource transmits upstream data to the base station；The channel in the frequency resource is persistently occupied in judgement
When duration reaches the preset duration, stops occupying the channel in the frequency resource and transmit upstream data to the base station.
In the technical scheme, when whether reaching default by the duration of the channel in the lasting acquisition frequency resource of judgement
It is long, when the duration to continue the channel in acquisition frequency resource in judgement is not up to preset duration, hold in frequency resource
Channel to base station transmit upstream data so that terminal can continuously occupy multiple subframes to transmit upper line number in preset time
According to improving the efficiency of transmission of upstream data；Reached simultaneously by continuing the duration of the channel in acquisition frequency resource in judgement
When preset duration, the channel stopped in acquisition frequency resource transmits upstream data to base station, to ensure improving to unauthorized frequency
While the channel utilization of spectrum, can justice effectively utilize unlicensed spectrum so that other-end also have an opportunity occupy should
Authorize frequency spectrum.
In any of the above-described technical solution, it is preferable that according to maximum channel occupy duration and the terminal whether needs
With integer sub-frame transmission upstream data, the preset duration is set.
Specifically, if maximum channel is 6.5 milliseconds a length of when occupying, when terminal is needed with line number on integer sub-frame transmission
According to then terminal can only at most send 6 subframes in a data transmission, i.e., 6 milliseconds will stop busy channel, at this time in advance
If duration is 6 milliseconds；If maximum channel is 6.5 milliseconds a length of when occupying, when terminal need not be with integer sub-frame transmission uplink
Data, then terminal can continue busy channel in a data transmission occupies duration namely 6.5 millis to maximum channel
Second, preset duration is that maximum channel occupies 6.5 milliseconds of duration at this time.
In any of the above-described technical solution, it is preferable that in the lasting channel occupied in the frequency resource to the base
It stands after the step of transmitting upstream data, further includes：Judge that the terminal whether there is upstream data to be transmitted；In judgement institute
Stating terminal, there are the channels when upstream data to be transmitted, held in the frequency resource in the transmission of the base station
Row data；When judging that the upstream data to be transmitted is not present in the terminal, stop occupying the letter in the frequency resource
Upstream data is transmitted to the base station in road.
In the technical scheme, by judging that terminal whether there is upstream data to be transmitted, to exist in judgement terminal
When upstream data to be transmitted, the channel held in frequency resource transmits upstream data to base station so that terminal can be held
Continuous busy channel completes data transmission, improves data transmission efficiency and the channel utilization to unlicensed spectrum；Pass through simultaneously
When judging that upstream data to be transmitted is not present in terminal, the channel stopped in acquisition frequency resource transmits upper line number to base station
According to avoiding in no data to be transmitted the channel in still acquisition frequency resource and result in waste of resources, so that other-end is organic
The mandate frequency spectrum can be occupied in time, further increase the channel utilization to unlicensed spectrum.
In any of the above-described technical solution, it is preferable that in the lasting channel occupied in the frequency resource to the base
It stands after the step of transmitting upstream data, further includes：Judge whether that receiving the stopping that the base station is sent occupies the frequency
The notice signaling of channel in resource；When judgement does not receive the notice signaling, hold in the frequency resource
Channel transmits upstream data to the base station；When judgement receives the notice signaling, stop occupying in the frequency resource
Channel to the base station transmit upstream data.
In the technical scheme, by judging whether to receive the channel in the stopping acquisition frequency resource of base station transmission
Notice signaling transmits upper line number with the channel when judgement does not receive notice signaling, held in frequency resource to base station
According to so that terminal can continue busy channel and complete data transmission, improve data transmission efficiency and the letter to unlicensed spectrum
Road utilization rate；Simultaneously by when judgement receives notice signaling, stopping the channel in acquisition frequency resource in the transmission of base station
Row data so that occur when the business of higher level (such as radar), capable of in time stopping in occupied unlicensed spectrum
The channel for only occupying unlicensed spectrum, so that it is guaranteed that the business of higher level obtains timely processing.
According to the second aspect of the invention, it is also proposed that a kind of data transmission device based on unlicensed spectrum, including：It connects
Unit is received, the upstream dispatching instructions for receiving base station transmission；Determination unit, for according to the upstream dispatching instructions, determining
The base station is the frequency resource in the unlicensed spectrum of the terminal distribution；Detection unit, for detecting the frequency resource
On channel whether be in idle condition；Processing unit, for detecting the letter in the frequency resource in the detection unit
When road is in idle condition, the channel persistently occupied in the frequency resource transmits upstream data to the base station.
In the technical scheme, by receiving the upstream dispatching instructions of base station transmission to determine base station as the non-of terminal distribution
The frequency resource on frequency spectrum is authorized, and detects whether the channel in frequency resource is in idle condition, to detect frequency money
When channel on source is in idle condition, the channel continued in acquisition frequency resource transmits upstream data to base station so that terminal
When transmitting upstream data by unlicensed spectrum, it is only necessary to carry out a secondary channel inspection to the channel in the frequency resource of distribution
It surveys, and when confirming the channel idle, so that it may upstream data be transmitted with lasting occupancy channel, avoid terminal by non-
The problem of needing repeatedly to carry out Channel Detection and reduce the channel utilization to unlicensed spectrum in mandate spectrum transmissions data procedures,
The detection time for greatly reducing channel, improves the channel utilization of unlicensed spectrum, while improving the biography of upstream data
Defeated efficiency.
Specifically, when terminal needs to transmit upstream data by unlicensed spectrum, if upper line number to be transmitted in terminal
According to needing 10 subframes (assuming that a subframe time length is 1 millisecond) that transformation task could be completed, then terminal only need to be in head
Secondary to carry out a Channel Detection when receiving upstream dispatching instructions, the channel in frequency resource to determine distribution is in idle shape
State, so that it may upstream data is transmitted to need persistently to occupy 10 subframes in the process after, and different from the related technology：If terminal
Transformation task is completed, then at the end of each sub-frame transmission in above-mentioned 10 subframes, is both needed to re-start Channel Detection, is increased
Add the time of Channel Detection, while cannot constantly transmit upstream data.As it can be seen that when detecting that the channel of unlicensed spectrum is empty
Idle persistently occupies the transmission upstream data of unlicensed spectrum, substantially increases the channel utilization to unlicensed spectrum,
The efficiency of transmission of upstream data is also improved simultaneously.
In the above-mentioned technical solutions, it is preferable that further include：First judging unit continues to occupy the frequency for judging
Whether the duration of the channel in resource reaches preset duration；The processing unit is additionally operable to, and is judged in first judging unit
When persistently occupying the duration of the channel in the frequency resource and being not up to the preset duration, hold in the frequency resource
Channel to the base station transmit upstream data, and for first judging unit judgement persistently occupy the frequency resource
On the duration of channel when reaching the preset duration, stop occupying the channel in the frequency resource in the transmission of the base station
Row data.
In the technical scheme, when whether reaching default by the duration of the channel in the lasting acquisition frequency resource of judgement
It is long, when the duration to continue the channel in acquisition frequency resource in judgement is not up to preset duration, hold in frequency resource
Channel to base station transmit upstream data so that terminal can continuously occupy multiple subframes to transmit upper line number in preset time
According to improving the efficiency of transmission of upstream data；Reached simultaneously by continuing the duration of the channel in acquisition frequency resource in judgement
When preset duration, the channel stopped in acquisition frequency resource transmits upstream data to base station, to ensure improving to unauthorized frequency
While the channel utilization of spectrum, can justice effectively utilize unlicensed spectrum so that other-end also have an opportunity occupy should
Authorize frequency spectrum.
In any of the above-described technical solution, it is preferable that further include：Setting unit, when for being occupied according to maximum channel
Whether the long and terminal needs that the preset duration is arranged with integer sub-frame transmission upstream data.
Specifically, if maximum channel is 6.5 milliseconds a length of when occupying, when terminal is needed with line number on integer sub-frame transmission
According to then terminal can only at most send 6 subframes in a data transmission, i.e., 6 milliseconds will stop busy channel, at this time in advance
If duration is 6 milliseconds；If maximum channel is 6.5 milliseconds a length of when occupying, when terminal need not be with integer sub-frame transmission uplink
Data, then terminal can continue busy channel in a data transmission occupies duration namely 6.5 millis to maximum channel
Second, preset duration is that maximum channel occupies 6.5 milliseconds of duration at this time.
In any of the above-described technical solution, it is preferable that further include：Second judgment unit, for judging that the terminal is
It is no that there are upstream datas to be transmitted；The processing unit is additionally operable to, and judges that the terminal exists in the second judgment unit
When the upstream data to be transmitted, the channel held in the frequency resource transmits upstream data to the base station, and
For when the second judgment unit judges that the upstream data to be transmitted is not present in the terminal, stopping occupying the frequency
Channel in rate resource transmits upstream data to the base station.
In the technical scheme, by judging that terminal whether there is upstream data to be transmitted, to exist in judgement terminal
When upstream data to be transmitted, the channel held in frequency resource transmits upstream data to base station so that terminal can be held
Continuous busy channel completes data transmission, improves data transmission efficiency and the channel utilization to unlicensed spectrum；Pass through simultaneously
When judging that upstream data to be transmitted is not present in terminal, the channel stopped in acquisition frequency resource transmits upper line number to base station
According to avoiding in no data to be transmitted the channel in still acquisition frequency resource and result in waste of resources, so that other-end is organic
The mandate frequency spectrum can be occupied in time, further increase the channel utilization to unlicensed spectrum.
In any of the above-described technical solution, it is preferable that further include：Third judging unit is received for judging whether
The stopping that the base station is sent occupies the notice signaling of the channel in the frequency resource；The processing unit is additionally operable to, in institute
The judgement of third judging unit is stated when not receiving the notice signaling, holds over channel in the frequency resource to the base
It stands and transmits upstream data, and for when third judging unit judgement receives the notice signaling, stopping described in occupancy
Channel in frequency resource transmits upstream data to the base station.
In the technical scheme, by judging whether to receive the channel in the stopping acquisition frequency resource of base station transmission
Notice signaling transmits upper line number with the channel when judgement does not receive notice signaling, held in frequency resource to base station
According to so that terminal can continue busy channel and complete data transmission, improve data transmission efficiency and the letter to unlicensed spectrum
Road utilization rate；Simultaneously by when judgement receives notice signaling, stopping the channel in acquisition frequency resource in the transmission of base station
Row data so that occur when the business of higher level (such as radar), capable of in time stopping in occupied unlicensed spectrum
The channel for only occupying unlicensed spectrum, so that it is guaranteed that the business of higher level obtains timely processing.
By above technical scheme, unauthorized frequency can be persistently occupied in the channel idle for detecting unlicensed spectrum
The transmission upstream data of spectrum, reduces the detection time of the channel of unlicensed spectrum, improves terminal in the upper line number of transmission
According in the process to the channel utilization of unlicensed spectrum, while also improving the efficiency of transmission of upstream data.
Description of the drawings
Fig. 1 shows the exemplary flow of the data transmission method according to an embodiment of the invention based on unlicensed spectrum
Figure；
Fig. 2 shows the schematic block diagrams of the data transmission device according to an embodiment of the invention based on unlicensed spectrum.
Specific implementation mode
To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the exemplary flow of the data transmission method according to an embodiment of the invention based on unlicensed spectrum
Figure.
As shown in Figure 1, the data transmission method according to an embodiment of the invention based on unlicensed spectrum, including：
Step 102, the upstream dispatching instructions that base station is sent are received；
Step 104, according to the upstream dispatching instructions, determine the base station in the unlicensed spectrum of the terminal distribution
Frequency resource；
Step 106, detect whether the channel in the frequency resource is in idle condition；
Step 108, when the channel on detecting the frequency resource is in idle condition, the frequency money is persistently occupied
Channel on source transmits upstream data to the base station.
In the technical scheme, by receiving the upstream dispatching instructions of base station transmission to determine base station as the non-of terminal distribution
The frequency resource on frequency spectrum is authorized, and detects whether the channel in frequency resource is in idle condition, to detect frequency money
When channel on source is in idle condition, the channel continued in acquisition frequency resource transmits upstream data to base station so that terminal
When transmitting upstream data by unlicensed spectrum, it is only necessary to carry out a secondary channel inspection to the channel in the frequency resource of distribution
It surveys, and when confirming the channel idle, so that it may upstream data be transmitted with lasting occupancy channel, avoid terminal by non-
The problem of needing repeatedly to carry out Channel Detection and reduce the channel utilization to unlicensed spectrum in mandate spectrum transmissions data procedures,
The detection time for greatly reducing channel, improves the channel utilization of unlicensed spectrum, while improving the biography of upstream data
Defeated efficiency.
Specifically, when terminal needs to transmit upstream data by unlicensed spectrum, if upper line number to be transmitted in terminal
According to needing 10 subframes (assuming that a subframe time length is 1 millisecond) that transformation task could be completed, then terminal only need to be in head
Secondary to carry out a Channel Detection when receiving upstream dispatching instructions, the channel in frequency resource to determine distribution is in idle shape
State, so that it may upstream data is transmitted to need persistently to occupy 10 subframes in the process after, and different from the related technology：If terminal
Transformation task is completed, then at the end of each sub-frame transmission in above-mentioned 10 subframes, is both needed to re-start Channel Detection, is increased
Add the time of Channel Detection, while cannot constantly transmit upstream data.As it can be seen that when detecting that the channel of unlicensed spectrum is empty
Idle persistently occupies the transmission upstream data of unlicensed spectrum, substantially increases the channel utilization to unlicensed spectrum,
The efficiency of transmission of upstream data is also improved simultaneously.
In the above-mentioned technical solutions, it is preferable that the channel in the lasting occupancy frequency resource is transmitted to the base station
After the step of upstream data, further include：Judge whether the duration for persistently occupying the channel in the frequency resource reaches default
Duration；When judging that the duration for persistently occupying the channel in the frequency resource is not up to the preset duration, institute is held over
The channel stated in frequency resource transmits upstream data to the base station；The channel in the frequency resource is persistently occupied in judgement
When duration reaches the preset duration, stops occupying the channel in the frequency resource and transmit upstream data to the base station.
In the technical scheme, when whether reaching default by the duration of the channel in the lasting acquisition frequency resource of judgement
It is long, when the duration to continue the channel in acquisition frequency resource in judgement is not up to preset duration, hold in frequency resource
Channel to base station transmit upstream data so that terminal can continuously occupy multiple subframes to transmit upper line number in preset time
According to improving the efficiency of transmission of upstream data；Reached simultaneously by continuing the duration of the channel in acquisition frequency resource in judgement
When preset duration, the channel stopped in acquisition frequency resource transmits upstream data to base station, to ensure improving to unauthorized frequency
While the channel utilization of spectrum, can justice effectively utilize unlicensed spectrum so that other-end also have an opportunity occupy should
Authorize frequency spectrum.
In any of the above-described technical solution, it is preferable that according to maximum channel occupy duration and the terminal whether needs
With integer sub-frame transmission upstream data, the preset duration is set.
Specifically, if maximum channel is 6.5 milliseconds a length of when occupying, when terminal is needed with line number on integer sub-frame transmission
According to then terminal can only at most send 6 subframes in a data transmission, i.e., 6 milliseconds will stop busy channel, at this time in advance
If duration is 6 milliseconds；If maximum channel is 6.5 milliseconds a length of when occupying, when terminal need not be with integer sub-frame transmission uplink
Data, then terminal can continue busy channel in a data transmission occupies duration namely 6.5 millis to maximum channel
Second, preset duration is that maximum channel occupies 6.5 milliseconds of duration at this time.
In any of the above-described technical solution, it is preferable that in the lasting channel occupied in the frequency resource to the base
It stands after the step of transmitting upstream data, further includes：Judge that the terminal whether there is upstream data to be transmitted；In judgement institute
Stating terminal, there are the channels when upstream data to be transmitted, held in the frequency resource in the transmission of the base station
Row data；When judging that the upstream data to be transmitted is not present in the terminal, stop occupying the letter in the frequency resource
Upstream data is transmitted to the base station in road.
In the technical scheme, by judging that terminal whether there is upstream data to be transmitted, to exist in judgement terminal
When upstream data to be transmitted, the channel held in frequency resource transmits upstream data to base station so that terminal can be held
Continuous busy channel completes data transmission, improves data transmission efficiency and the channel utilization to unlicensed spectrum；Pass through simultaneously
When judging that upstream data to be transmitted is not present in terminal, the channel stopped in acquisition frequency resource transmits upper line number to base station
According to avoiding in no data to be transmitted the channel in still acquisition frequency resource and result in waste of resources, so that other-end is organic
The mandate frequency spectrum can be occupied in time, further increase the channel utilization to unlicensed spectrum.
In any of the above-described technical solution, it is preferable that in the lasting channel occupied in the frequency resource to the base
It stands after the step of transmitting upstream data, further includes：Judge whether that receiving the stopping that the base station is sent occupies the frequency
The notice signaling of channel in resource；When judgement does not receive the notice signaling, hold in the frequency resource
Channel transmits upstream data to the base station；When judgement receives the notice signaling, stop occupying in the frequency resource
Channel to the base station transmit upstream data.
In the technical scheme, by judging whether to receive the channel in the stopping acquisition frequency resource of base station transmission
Notice signaling transmits upper line number with the channel when judgement does not receive notice signaling, held in frequency resource to base station
According to so that terminal can continue busy channel and complete data transmission, improve data transmission efficiency and the letter to unlicensed spectrum
Road utilization rate；Simultaneously by when judgement receives notice signaling, stopping the channel in acquisition frequency resource in the transmission of base station
Row data so that occur when the business of higher level (such as radar), capable of in time stopping in occupied unlicensed spectrum
The channel for only occupying unlicensed spectrum, so that it is guaranteed that the business of higher level obtains timely processing.
Fig. 2 shows the schematic block diagrams of the data transmission device according to an embodiment of the invention based on unlicensed spectrum.
As shown in Fig. 2, the data transmission device 200 according to an embodiment of the invention based on unlicensed spectrum, including：It connects
Receive unit 202, determination unit 204, detection unit 206 and processing unit 208.
Wherein, receiving unit 202, the upstream dispatching instructions for receiving base station transmission；Determination unit 204 is used for basis
The upstream dispatching instructions determine the base station for the frequency resource in the unlicensed spectrum of the terminal distribution；Detection unit
206, whether the channel for detecting in the frequency resource is in idle condition；Processing unit 208, for single in the detection
When the channel that member 206 detects in the frequency resource is in idle condition, persistently occupy channel in the frequency resource to
Transmit upstream data in the base station.
In the technical scheme, by receiving the upstream dispatching instructions of base station transmission to determine base station as the non-of terminal distribution
The frequency resource on frequency spectrum is authorized, and detects whether the channel in frequency resource is in idle condition, to detect frequency money
When channel on source is in idle condition, the channel continued in acquisition frequency resource transmits upstream data to base station so that terminal
When transmitting upstream data by unlicensed spectrum, it is only necessary to carry out a secondary channel inspection to the channel in the frequency resource of distribution
It surveys, and when confirming the channel idle, so that it may upstream data be transmitted with lasting occupancy channel, avoid terminal by non-
The problem of needing repeatedly to carry out Channel Detection and reduce the channel utilization to unlicensed spectrum in mandate spectrum transmissions data procedures,
The detection time for greatly reducing channel, improves the channel utilization of unlicensed spectrum, while improving the biography of upstream data
Defeated efficiency.
Specifically, when terminal needs to transmit upstream data by unlicensed spectrum, if upper line number to be transmitted in terminal
According to needing 10 subframes (assuming that a subframe time length is 1 millisecond) that transformation task could be completed, then terminal only need to be in head
Secondary to carry out a Channel Detection when receiving upstream dispatching instructions, the channel in frequency resource to determine distribution is in idle shape
State, so that it may upstream data is transmitted to need persistently to occupy 10 subframes in the process after, and different from the related technology：If terminal
Transformation task is completed, then at the end of each sub-frame transmission in above-mentioned 10 subframes, is both needed to re-start Channel Detection, is increased
Add the time of Channel Detection, while cannot constantly transmit upstream data.As it can be seen that when detecting that the channel of unlicensed spectrum is empty
Idle persistently occupies the transmission upstream data of unlicensed spectrum, substantially increases the channel utilization to unlicensed spectrum,
The efficiency of transmission of upstream data is also improved simultaneously.
In the above-mentioned technical solutions, it is preferable that further include：First judging unit 210 continues to occupy the frequency for judging
Whether the duration of the channel in rate resource reaches preset duration；The processing unit 208 is additionally operable to, in first judging unit
When the duration that 210 judgements persistently occupy the channel in the frequency resource is not up to the preset duration, the frequency is held over
Channel in rate resource transmits upstream data to the base station, and for judging persistently to occupy in first judging unit 210
When the duration of channel in the frequency resource reaches the preset duration, stopping occupies the channel in the frequency resource to institute
State base station transmission upstream data.
In the technical scheme, when whether reaching default by the duration of the channel in the lasting acquisition frequency resource of judgement
It is long, when the duration to continue the channel in acquisition frequency resource in judgement is not up to preset duration, hold in frequency resource
Channel to base station transmit upstream data so that terminal can continuously occupy multiple subframes to transmit upper line number in preset time
According to improving the efficiency of transmission of upstream data；Reached simultaneously by continuing the duration of the channel in acquisition frequency resource in judgement
When preset duration, the channel stopped in acquisition frequency resource transmits upstream data to base station, to ensure improving to unauthorized frequency
While the channel utilization of spectrum, can justice effectively utilize unlicensed spectrum so that other-end also have an opportunity occupy should
Authorize frequency spectrum.
In any of the above-described technical solution, it is preferable that further include：Setting unit 212, for being occupied according to maximum channel
Whether duration and the terminal need that the preset duration is arranged with integer sub-frame transmission upstream data.
Specifically, if maximum channel is 6.5 milliseconds a length of when occupying, when terminal is needed with line number on integer sub-frame transmission
According to then terminal can only at most send 6 subframes in a data transmission, i.e., 6 milliseconds will stop busy channel, at this time in advance
If duration is 6 milliseconds；If maximum channel is 6.5 milliseconds a length of when occupying, when terminal need not be with integer sub-frame transmission uplink
Data, then terminal can continue busy channel in a data transmission occupies duration namely 6.5 millis to maximum channel
Second, preset duration is that maximum channel occupies 6.5 milliseconds of duration at this time.
In any of the above-described technical solution, it is preferable that further include：Second judgment unit 214, for judging the terminal
With the presence or absence of upstream data to be transmitted；The processing unit 208 is additionally operable to, and is judged in the second judgment unit 214 described
Terminal there are the channel when upstream data to be transmitted, held in the frequency resource to the base station transmit uplink
Data, and for when the second judgment unit 214 judges that the upstream data to be transmitted is not present in the terminal, stopping
The channel occupied in the frequency resource transmits upstream data to the base station.
In the technical scheme, by judging that terminal whether there is upstream data to be transmitted, to exist in judgement terminal
When upstream data to be transmitted, the channel held in frequency resource transmits upstream data to base station so that terminal can be held
Continuous busy channel completes data transmission, improves data transmission efficiency and the channel utilization to unlicensed spectrum；Pass through simultaneously
When judging that upstream data to be transmitted is not present in terminal, the channel stopped in acquisition frequency resource transmits upper line number to base station
According to avoiding in no data to be transmitted the channel in still acquisition frequency resource and result in waste of resources, so that other-end is organic
The mandate frequency spectrum can be occupied in time, further increase the channel utilization to unlicensed spectrum.
In any of the above-described technical solution, it is preferable that further include：Third judging unit 216 is received for judging whether
The notice signaling of the channel in the frequency resource is occupied to the stopping that the base station is sent；The processing unit 208 is additionally operable to,
When the third judging unit 216 judgement does not receive the notice signaling, the channel in the frequency resource is held over
Upstream data is transmitted to the base station, and for when the third judging unit 216 judgement receives the notice signaling, stopping
The channel only occupied in the frequency resource transmits upstream data to the base station.
In the technical scheme, by judging whether to receive the channel in the stopping acquisition frequency resource of base station transmission
Notice signaling transmits upper line number with the channel when judgement does not receive notice signaling, held in frequency resource to base station
According to so that terminal can continue busy channel and complete data transmission, improve data transmission efficiency and the letter to unlicensed spectrum
Road utilization rate；Simultaneously by when judgement receives notice signaling, stopping the channel in acquisition frequency resource in the transmission of base station
Row data so that occur when the business of higher level (such as radar), capable of in time stopping in occupied unlicensed spectrum
The channel for only occupying unlicensed spectrum, so that it is guaranteed that the business of higher level obtains timely processing.
It is described in detail technical scheme of the present invention above in association with attached drawing, the present invention proposes a kind of new based on unauthorized
The data transmission scheme of frequency spectrum can persistently occupy the letter of unlicensed spectrum in the channel idle for detecting unlicensed spectrum
Road transmits upstream data, reduces the detection time of the channel of unlicensed spectrum, improves terminal in transmission upstream data process
In to the channel utilization of unlicensed spectrum, while also improving the efficiency of transmission of upstream data.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of data transmission method based on unlicensed spectrum is suitable for terminal, which is characterized in that including：
Receive the upstream dispatching instructions that base station is sent；
According to the upstream dispatching instructions, determine the base station for the frequency resource in the unlicensed spectrum of the terminal distribution；
Detect whether the channel in the frequency resource is in idle condition；
When the channel on detecting the frequency resource is in idle condition, continue to account for over multiple subframes in preset duration
With the channel in the frequency resource upstream data is transmitted to the base station；
Whether needed according to maximum channel occupancy duration and the terminal described to be arranged with integer sub-frame transmission upstream data
Preset duration.
2. the data transmission method according to claim 1 based on unlicensed spectrum, which is characterized in that described default
While continuing to occupy the channel in the frequency resource in duration over multiple subframes to base station transmission upstream data, also
Including：
Judge whether the duration for persistently occupying the channel in the frequency resource reaches preset duration；
When judging that the duration for persistently occupying the channel in the frequency resource is not up to the preset duration, hold over described
Channel in frequency resource transmits upstream data to the base station；
When judging that the duration for persistently occupying the channel in the frequency resource reaches the preset duration, stop occupying the frequency
Channel in rate resource transmits upstream data to the base station.
3. the data transmission method according to claim 1 based on unlicensed spectrum, which is characterized in that described default
Continue to occupy over multiple subframes in duration the step of channel in the frequency resource transmits upstream data to the base station it
Afterwards, further include：
Judge that the terminal whether there is upstream data to be transmitted；
Judging the terminal, there are the channels when upstream data to be transmitted, held in the frequency resource to institute
State base station transmission upstream data；
When judging that the upstream data to be transmitted is not present in the terminal, stop occupying channel in the frequency resource to
Transmit upstream data in the base station.
4. the data transmission method according to claim 1 based on unlicensed spectrum, which is characterized in that described default
Continue to occupy over multiple subframes in duration the step of channel in the frequency resource transmits upstream data to the base station it
Afterwards, further include：
Judge whether to receive the notice signaling that the stopping that the base station is sent occupies the channel in the frequency resource；
When judgement does not receive the notice signaling, the channel in the frequency resource is held over in the transmission of the base station
Row data；
When judgement receives the notice signaling, stops occupying the channel in the frequency resource and transmit uplink to the base station
Data.
5. a kind of data transmission device based on unlicensed spectrum is suitable for terminal, which is characterized in that including：
Receiving unit, the upstream dispatching instructions for receiving base station transmission；
Determination unit, for according to the upstream dispatching instructions, determining that the base station is the unlicensed spectrum of the terminal distribution
On frequency resource；
Whether detection unit, the channel for detecting in the frequency resource are in idle condition；
Processing unit, when the channel for being detected in the detection unit in the frequency resource is in idle condition, pre-
If continue to occupy the channel in the frequency resource in duration over multiple subframes transmits upstream data to the base station；
Setting unit, for whether being needed with line number on integer sub-frame transmission according to maximum channel occupancy duration and the terminal
According to being arranged the preset duration.
6. the data transmission device according to claim 5 based on unlicensed spectrum, which is characterized in that further include：
First judging unit, for judging whether the duration for continuing to occupy the channel in the frequency resource reaches preset duration；
The processing unit is additionally operable to, when first judging unit judgement persistently occupies the channel in the frequency resource
When the long not up to preset duration, the channel held in the frequency resource transmits upstream data to the base station, and
Duration for persistently occupying the channel in the frequency resource in first judging unit judgement reaches the preset duration
When, stop occupying the channel in the frequency resource and transmits upstream data to the base station.
7. the data transmission device according to claim 5 based on unlicensed spectrum, which is characterized in that further include：
Second judgment unit, for judging that the terminal whether there is upstream data to be transmitted；
The processing unit is additionally operable to, and judging the terminal in the second judgment unit, there are the upstream datas to be transmitted
When, the channel held in the frequency resource transmits upstream data to the base station, and single for judging described second
When member judges that the upstream data to be transmitted is not present in the terminal, stop occupying channel in the frequency resource to described
Transmit upstream data in base station.
8. the data transmission device according to claim 5 based on unlicensed spectrum, which is characterized in that further include：
Third judging unit receives the channel in the stopping occupancy frequency resource that the base station is sent for judging whether
Notice signaling；
The processing unit is additionally operable to, and when third judging unit judgement does not receive the notice signaling, is held over
Channel in the frequency resource transmits upstream data to the base station, and for being received in third judging unit judgement
When the notice signaling, stops occupying the channel in the frequency resource and transmit upstream data to the base station.
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| CN201510564589.2A CN105072690B (en) | 2015-09-06 | 2015-09-06 | Data transmission method based on unlicensed spectrum and device |
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