CN105072690A - Unlicensed spectrum-based data transmission method and device - Google Patents
Unlicensed spectrum-based data transmission method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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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Abstract
The invention provides an unlicensed spectrum-based data transmission method and device. The unlicensed spectrum-based data transmission method includes the following steps that: an uplink scheduling command transmitted by a base station is received; frequency resources on an unlicensed spectrum which are allocated for a terminal by the base station are determined; whether a channel on the frequency resources is idle is detected; and when it is detected that the channel on the frequency resources is idle, the channel on the frequency resources is continuously occupied to transmit uplink data to the base station. With the unlicensed spectrum-based data transmission method provided by the technical schemes of the invention adopted, the channel of the unlicensed spectrum is continuously occupied to transmit the uplink data when it is detected that the channel of the unlicensed spectrum is idle, and therefore, detection time of the channel of the unlicensed spectrum can be decreased, and the utilization rate of the channel of the unlicensed spectrum in an uplink transmission process can be improved for the terminal, and the transmission efficiency of the uplink data can be also improved.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of data transmission method based on unlicensed spectrum and a kind of data transmission device based on unlicensed spectrum.
Background technology
3GPP normal structure have passed based on LTE (LongTermEvolution in TSGRAN#65 plenary session, Long Term Evolution) LAA (Licensed-AssistedAccess, auxiliary access) research project project verification, this project mainly studies how to dispose LTE network in unlicensed spectrum, thus reach justice and effectively utilize unlicensed spectrum, improve the object of the message transmission rate of LTE system.
The use of LTE to unlicensed spectrum has two kinds of modes, Yi Zhongshi: only use unlicensed spectrum when downlink data transmission; Another kind is: all can use unlicensed spectrum when uplink and downlink transfer of data, the multiplexing in a time division manner mode of uplink and downlink is on same unauthorized carrier wave, this kind of time division multiplexing mode TDD (TimeDivisionDuplexing) pattern be different from LTE, uplink and downlink are specific frame structure not, and any moment all likely carries out uplink or downlink transfer.
Authorize on frequency spectrum when LTE system is deployed in, terminal does not need CCA (ClearChannelAccess before transmitting data, clear channel assessment (CCA)) detect, eNodeB (EvolvedNodeB is received in terminal, evolved NodeB) UL-grant (upstream dispatching instructions) time, in the sub-frame of uplink that this UL-grant is corresponding, send data.In the ordinary course of things, current LTE system adopts dynamic dispatching mode to transmit data, i.e. a UL-grant instruction, only corresponds to a sub-frame of uplink.Terminal often receives the UL-grant instruction that an eNodeB sends, and can only send data in corresponding with UL-grant subframe (a subframe time length is 1 millisecond).
Terminal need by non-award that the phase, frequency spectrum transmitted data time, if the dynamic dispatching mode in current LTE system is used in the LAA system of unlicensed spectrum, the uplink spectrum utilance of terminal then can be caused to reduce, reason is: terminal is after the UL-grant instruction receiving eNodeB, needing first to carry out CCA detection to the frequency resource of UL-grant instruction, just can take this frequency resource when channel idle being detected.And CCA detection also needs to take regular hour resource, such as conventional in CCA detects LBE (Loadbasedequipment, support type equipment) mode, Channel Detection institute's time spent is usually up to hundreds of microsecond, if still adopt the dynamic dispatching mode in current LTE system, terminal receives the data that UL-grant can only send 1 millisecond at every turn, then channel utilization will be very low.
Therefore, how can improve terminal, in transmit ascending data process, technical problem urgently to be resolved hurrily be become to the channel utilization of unlicensed spectrum.
Summary of the invention
The present invention just based on above-mentioned technical problem one of at least, propose a kind of data transmission scheme based on unlicensed spectrum newly, can when the channel idle of unlicensed spectrum being detected, continue the transmission upstream data taking unlicensed spectrum, reduce the detection time of the channel of unlicensed spectrum, improve terminal channel utilization to unlicensed spectrum in transmit ascending data process, also improve the efficiency of transmission of upstream data simultaneously.
In view of this, the present invention proposes a kind of data transmission method based on unlicensed spectrum, comprising: receive the upstream dispatching instructions that base station sends; According to described upstream dispatching instructions, determine that described base station is the frequency resource in the unlicensed spectrum of described terminal distribution; Whether the channel detected in described frequency resource is in idle condition; When detecting that the channel in described frequency resource is in idle condition, continue to take channel in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by receiving upstream dispatching instructions that base station sends to determine the frequency resource in unlicensed spectrum that base station is terminal distribution, and whether the channel detected in frequency resource is in idle condition, with when detecting that the channel in frequency resource is in idle condition, channel in lasting acquisition frequency resource is to base-station transmission upstream data, make terminal when by unlicensed spectrum transmit ascending data, only need to carry out a Channel Detection to the channel in the frequency resource of distributing, and when confirming this channel idle, just can continue to take this channel and carry out transmit ascending data, avoid terminal to need repeatedly to carry out Channel Detection and the problem that reduces the channel utilization to unlicensed spectrum in by unlicensed spectrum transmission data procedures, greatly reduce the detection time of channel, improve the channel utilization of unlicensed spectrum, improve the efficiency of transmission of upstream data simultaneously.
Particularly, when terminal needs by unlicensed spectrum transmit ascending data, if upstream data waiting for transmission needs 10 subframes (supposing that a subframe time length is 1 millisecond) just can complete transformation task in terminal, so terminal only need carry out a Channel Detection when receiving upstream dispatching instructions first, to determine that the channel in the frequency resource of distribution is in idle condition, just can after need in process, to continue to take 10 subframes and carry out transmit ascending data, and being different from correlation technique: terminal is to complete transformation task, at the end of each sub-frame transmission then in above-mentioned 10 subframes, all need to re-start Channel Detection, add the time of Channel Detection, simultaneously can not transmit ascending data constantly.Visible, when the channel idle of unlicensed spectrum being detected, continuing the transmission upstream data taking unlicensed spectrum, substantially increasing the channel utilization to unlicensed spectrum, also improving the efficiency of transmission of upstream data simultaneously.
In technique scheme, preferably, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise: judge whether the duration continuing the channel taken in described frequency resource reaches preset duration; When judging that the duration continuing the channel taken in described frequency resource does not reach described preset duration, hold over channel in described frequency resource to described base-station transmission upstream data; When the duration judging to continue the channel taken in described frequency resource reaches described preset duration, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the duration of the channel in lasting acquisition frequency resource reaches preset duration, with when judging that the duration of the channel continued in acquisition frequency resource does not reach preset duration, hold over channel in frequency resource to base-station transmission upstream data, make terminal can take multiple subframe continuously in Preset Time and carry out transmit ascending data, improve the efficiency of transmission of upstream data; Simultaneously by when judging that the duration of the channel continued in acquisition frequency resource reaches preset duration, channel in stopping acquisition frequency resource is to base-station transmission upstream data, to guarantee while improving the channel utilization to unlicensed spectrum, justice can effectively utilize unlicensed spectrum, also have an opportunity to make other-end to take this mandate frequency spectrum.
In above-mentioned any one technical scheme, preferably, duration is taken according to maximum channel and described terminal arranges described preset duration the need of with an integer subframe transmit ascending data.
Particularly, if it is 6.5 milliseconds that maximum channel takies duration, when terminal needs with an integer subframe transmit ascending data, so terminal can only send at most 6 subframes when a data transfer, namely 6 milliseconds will stop busy channel, and now preset duration is 6 milliseconds; If it is 6.5 milliseconds that maximum channel takies duration, when terminal does not need with an integer subframe transmit ascending data, so terminal just can continue busy channel and takies duration to maximum channel when a data transfer, and also namely 6.5 milliseconds, now preset duration is maximum channel and takies duration 6.5 milliseconds.
In above-mentioned any one technical scheme, preferably, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise: judge whether described terminal exists upstream data waiting for transmission; When judging that described terminal exists described upstream data waiting for transmission, hold over channel in described frequency resource to described base-station transmission upstream data; When judging that described terminal does not exist described upstream data waiting for transmission, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether terminal exists upstream data waiting for transmission, with when judging that terminal exists upstream data waiting for transmission, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging that terminal does not exist upstream data waiting for transmission, channel in stopping acquisition frequency resource is to base-station transmission upstream data, avoid causing the wasting of resources without channel during data to be transmitted still in acquisition frequency resource, have an opportunity to make other-end to take this mandate frequency spectrum in time, further increasing the channel utilization to unlicensed spectrum.
In above-mentioned any one technical scheme, preferably, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise: judge whether to receive the notice signaling that stopping that described base station sends takies the channel in described frequency resource; When judging not receive described notice signaling, hold over channel in described frequency resource to described base-station transmission upstream data; When judging to receive described notice signaling, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the notice signaling of the channel received in the stopping acquisition frequency resource of base station transmission, with when judging not receive notice signaling, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging to receive notice signaling, channel in stopping acquisition frequency resource is to base-station transmission upstream data, when making the business having occurred higher level in shared unlicensed spectrum (such as radar), the channel taking unlicensed spectrum can be stopped in time, thus guarantee that the business of higher level is processed in time.
According to a second aspect of the invention, also proposed a kind of data transmission device based on unlicensed spectrum, comprising: receiving element, for receiving the upstream dispatching instructions that base station sends; Determining unit, for according to described upstream dispatching instructions, determines that described base station is the frequency resource in the unlicensed spectrum of described terminal distribution; Whether detecting unit, be in idle condition for the channel detected in described frequency resource; Processing unit, when the channel for detecting in described frequency resource at described detecting unit is in idle condition, continues to take channel in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by receiving upstream dispatching instructions that base station sends to determine the frequency resource in unlicensed spectrum that base station is terminal distribution, and whether the channel detected in frequency resource is in idle condition, with when detecting that the channel in frequency resource is in idle condition, channel in lasting acquisition frequency resource is to base-station transmission upstream data, make terminal when by unlicensed spectrum transmit ascending data, only need to carry out a Channel Detection to the channel in the frequency resource of distributing, and when confirming this channel idle, just can continue to take this channel and carry out transmit ascending data, avoid terminal to need repeatedly to carry out Channel Detection and the problem that reduces the channel utilization to unlicensed spectrum in by unlicensed spectrum transmission data procedures, greatly reduce the detection time of channel, improve the channel utilization of unlicensed spectrum, improve the efficiency of transmission of upstream data simultaneously.
Particularly, when terminal needs by unlicensed spectrum transmit ascending data, if upstream data waiting for transmission needs 10 subframes (supposing that a subframe time length is 1 millisecond) just can complete transformation task in terminal, so terminal only need carry out a Channel Detection when receiving upstream dispatching instructions first, to determine that the channel in the frequency resource of distribution is in idle condition, just can after need in process, to continue to take 10 subframes and carry out transmit ascending data, and being different from correlation technique: terminal is to complete transformation task, at the end of each sub-frame transmission then in above-mentioned 10 subframes, all need to re-start Channel Detection, add the time of Channel Detection, simultaneously can not transmit ascending data constantly.Visible, when the channel idle of unlicensed spectrum being detected, continuing the transmission upstream data taking unlicensed spectrum, substantially increasing the channel utilization to unlicensed spectrum, also improving the efficiency of transmission of upstream data simultaneously.
In technique scheme, preferably, also comprise: the first judging unit, for judging whether the duration continuing the channel taken in described frequency resource reaches preset duration; Described processing unit also for, when the duration that described first judging unit judges to continue the channel taken in described frequency resource does not reach described preset duration, hold over channel in described frequency resource to described base-station transmission upstream data, and for when the duration that described first judging unit judges to continue the channel taken in described frequency resource reaches described preset duration, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the duration of the channel in lasting acquisition frequency resource reaches preset duration, with when judging that the duration of the channel continued in acquisition frequency resource does not reach preset duration, hold over channel in frequency resource to base-station transmission upstream data, make terminal can take multiple subframe continuously in Preset Time and carry out transmit ascending data, improve the efficiency of transmission of upstream data; Simultaneously by when judging that the duration of the channel continued in acquisition frequency resource reaches preset duration, channel in stopping acquisition frequency resource is to base-station transmission upstream data, to guarantee while improving the channel utilization to unlicensed spectrum, justice can effectively utilize unlicensed spectrum, also have an opportunity to make other-end to take this mandate frequency spectrum.
In above-mentioned any one technical scheme, preferably, also comprise: setting unit, for taking duration according to maximum channel and described terminal arranges described preset duration the need of with an integer subframe transmit ascending data.
Particularly, if it is 6.5 milliseconds that maximum channel takies duration, when terminal needs with an integer subframe transmit ascending data, so terminal can only send at most 6 subframes when a data transfer, namely 6 milliseconds will stop busy channel, and now preset duration is 6 milliseconds; If it is 6.5 milliseconds that maximum channel takies duration, when terminal does not need with an integer subframe transmit ascending data, so terminal just can continue busy channel and takies duration to maximum channel when a data transfer, and also namely 6.5 milliseconds, now preset duration is maximum channel and takies duration 6.5 milliseconds.
In above-mentioned any one technical scheme, preferably, also comprise: the second judging unit, for judging whether described terminal exists upstream data waiting for transmission; Described processing unit also for, when described second judging unit judges that described terminal exists described upstream data waiting for transmission, hold over channel in described frequency resource to described base-station transmission upstream data, and for when described second judging unit judges that described terminal does not exist described upstream data waiting for transmission, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether terminal exists upstream data waiting for transmission, with when judging that terminal exists upstream data waiting for transmission, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging that terminal does not exist upstream data waiting for transmission, channel in stopping acquisition frequency resource is to base-station transmission upstream data, avoid causing the wasting of resources without channel during data to be transmitted still in acquisition frequency resource, have an opportunity to make other-end to take this mandate frequency spectrum in time, further increasing the channel utilization to unlicensed spectrum.
In above-mentioned any one technical scheme, preferably, also comprise: the 3rd judging unit, the stopping for judging whether to receive the transmission of described base station takies the notice signaling of the channel in described frequency resource; Described processing unit also for, when described 3rd judging unit judges not receive described notice signaling, hold over channel in described frequency resource to described base-station transmission upstream data, and for when described 3rd judging unit judges to receive described notice signaling, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the notice signaling of the channel received in the stopping acquisition frequency resource of base station transmission, with when judging not receive notice signaling, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging to receive notice signaling, channel in stopping acquisition frequency resource is to base-station transmission upstream data, when making the business having occurred higher level in shared unlicensed spectrum (such as radar), the channel taking unlicensed spectrum can be stopped in time, thus guarantee that the business of higher level is processed in time.
By above technical scheme, can when the channel idle of unlicensed spectrum being detected, continue the transmission upstream data taking unlicensed spectrum, reduce the detection time of the channel of unlicensed spectrum, improve terminal channel utilization to unlicensed spectrum in transmit ascending data process, also improve the efficiency of transmission of upstream data simultaneously.
Accompanying drawing explanation
Fig. 1 shows according to an embodiment of the invention based on the schematic flow diagram of the data transmission method of unlicensed spectrum;
Fig. 2 shows according to an embodiment of the invention based on the schematic block diagram of the data transmission device of unlicensed spectrum.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows according to an embodiment of the invention based on the schematic flow diagram of the data transmission method of unlicensed spectrum.
As shown in Figure 1, according to an embodiment of the invention based on the data transmission method of unlicensed spectrum, comprising:
Step 102, receives the upstream dispatching instructions that base station sends;
Step 104, according to described upstream dispatching instructions, determines that described base station is the frequency resource in the unlicensed spectrum of described terminal distribution;
Step 106, whether the channel detected in described frequency resource is in idle condition;
Step 108, when detecting that the channel in described frequency resource is in idle condition, continues to take channel in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by receiving upstream dispatching instructions that base station sends to determine the frequency resource in unlicensed spectrum that base station is terminal distribution, and whether the channel detected in frequency resource is in idle condition, with when detecting that the channel in frequency resource is in idle condition, channel in lasting acquisition frequency resource is to base-station transmission upstream data, make terminal when by unlicensed spectrum transmit ascending data, only need to carry out a Channel Detection to the channel in the frequency resource of distributing, and when confirming this channel idle, just can continue to take this channel and carry out transmit ascending data, avoid terminal to need repeatedly to carry out Channel Detection and the problem that reduces the channel utilization to unlicensed spectrum in by unlicensed spectrum transmission data procedures, greatly reduce the detection time of channel, improve the channel utilization of unlicensed spectrum, improve the efficiency of transmission of upstream data simultaneously.
Particularly, when terminal needs by unlicensed spectrum transmit ascending data, if upstream data waiting for transmission needs 10 subframes (supposing that a subframe time length is 1 millisecond) just can complete transformation task in terminal, so terminal only need carry out a Channel Detection when receiving upstream dispatching instructions first, to determine that the channel in the frequency resource of distribution is in idle condition, just can after need in process, to continue to take 10 subframes and carry out transmit ascending data, and being different from correlation technique: terminal is to complete transformation task, at the end of each sub-frame transmission then in above-mentioned 10 subframes, all need to re-start Channel Detection, add the time of Channel Detection, simultaneously can not transmit ascending data constantly.Visible, when the channel idle of unlicensed spectrum being detected, continuing the transmission upstream data taking unlicensed spectrum, substantially increasing the channel utilization to unlicensed spectrum, also improving the efficiency of transmission of upstream data simultaneously.
In technique scheme, preferably, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise: judge whether the duration continuing the channel taken in described frequency resource reaches preset duration; When judging that the duration continuing the channel taken in described frequency resource does not reach described preset duration, hold over channel in described frequency resource to described base-station transmission upstream data; When the duration judging to continue the channel taken in described frequency resource reaches described preset duration, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the duration of the channel in lasting acquisition frequency resource reaches preset duration, with when judging that the duration of the channel continued in acquisition frequency resource does not reach preset duration, hold over channel in frequency resource to base-station transmission upstream data, make terminal can take multiple subframe continuously in Preset Time and carry out transmit ascending data, improve the efficiency of transmission of upstream data; Simultaneously by when judging that the duration of the channel continued in acquisition frequency resource reaches preset duration, channel in stopping acquisition frequency resource is to base-station transmission upstream data, to guarantee while improving the channel utilization to unlicensed spectrum, justice can effectively utilize unlicensed spectrum, also have an opportunity to make other-end to take this mandate frequency spectrum.
In above-mentioned any one technical scheme, preferably, duration is taken according to maximum channel and described terminal arranges described preset duration the need of with an integer subframe transmit ascending data.
Particularly, if it is 6.5 milliseconds that maximum channel takies duration, when terminal needs with an integer subframe transmit ascending data, so terminal can only send at most 6 subframes when a data transfer, namely 6 milliseconds will stop busy channel, and now preset duration is 6 milliseconds; If it is 6.5 milliseconds that maximum channel takies duration, when terminal does not need with an integer subframe transmit ascending data, so terminal just can continue busy channel and takies duration to maximum channel when a data transfer, and also namely 6.5 milliseconds, now preset duration is maximum channel and takies duration 6.5 milliseconds.
In above-mentioned any one technical scheme, preferably, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise: judge whether described terminal exists upstream data waiting for transmission; When judging that described terminal exists described upstream data waiting for transmission, hold over channel in described frequency resource to described base-station transmission upstream data; When judging that described terminal does not exist described upstream data waiting for transmission, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether terminal exists upstream data waiting for transmission, with when judging that terminal exists upstream data waiting for transmission, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging that terminal does not exist upstream data waiting for transmission, channel in stopping acquisition frequency resource is to base-station transmission upstream data, avoid causing the wasting of resources without channel during data to be transmitted still in acquisition frequency resource, have an opportunity to make other-end to take this mandate frequency spectrum in time, further increasing the channel utilization to unlicensed spectrum.
In above-mentioned any one technical scheme, preferably, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise: judge whether to receive the notice signaling that stopping that described base station sends takies the channel in described frequency resource; When judging not receive described notice signaling, hold over channel in described frequency resource to described base-station transmission upstream data; When judging to receive described notice signaling, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the notice signaling of the channel received in the stopping acquisition frequency resource of base station transmission, with when judging not receive notice signaling, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging to receive notice signaling, channel in stopping acquisition frequency resource is to base-station transmission upstream data, when making the business having occurred higher level in shared unlicensed spectrum (such as radar), the channel taking unlicensed spectrum can be stopped in time, thus guarantee that the business of higher level is processed in time.
Fig. 2 shows according to an embodiment of the invention based on the schematic block diagram of the data transmission device of unlicensed spectrum.
As shown in Figure 2, according to an embodiment of the invention based on the data transmission device 200 of unlicensed spectrum, comprising: receiving element 202, determining unit 204, detecting unit 206 and processing unit 208.
Wherein, receiving element 202, for receiving the upstream dispatching instructions that base station sends; Determining unit 204, for according to described upstream dispatching instructions, determines that described base station is the frequency resource in the unlicensed spectrum of described terminal distribution; Whether detecting unit 206, be in idle condition for the channel detected in described frequency resource; Processing unit 208, when the channel for detecting in described frequency resource at described detecting unit 206 is in idle condition, continues to take channel in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by receiving upstream dispatching instructions that base station sends to determine the frequency resource in unlicensed spectrum that base station is terminal distribution, and whether the channel detected in frequency resource is in idle condition, with when detecting that the channel in frequency resource is in idle condition, channel in lasting acquisition frequency resource is to base-station transmission upstream data, make terminal when by unlicensed spectrum transmit ascending data, only need to carry out a Channel Detection to the channel in the frequency resource of distributing, and when confirming this channel idle, just can continue to take this channel and carry out transmit ascending data, avoid terminal to need repeatedly to carry out Channel Detection and the problem that reduces the channel utilization to unlicensed spectrum in by unlicensed spectrum transmission data procedures, greatly reduce the detection time of channel, improve the channel utilization of unlicensed spectrum, improve the efficiency of transmission of upstream data simultaneously.
Particularly, when terminal needs by unlicensed spectrum transmit ascending data, if upstream data waiting for transmission needs 10 subframes (supposing that a subframe time length is 1 millisecond) just can complete transformation task in terminal, so terminal only need carry out a Channel Detection when receiving upstream dispatching instructions first, to determine that the channel in the frequency resource of distribution is in idle condition, just can after need in process, to continue to take 10 subframes and carry out transmit ascending data, and being different from correlation technique: terminal is to complete transformation task, at the end of each sub-frame transmission then in above-mentioned 10 subframes, all need to re-start Channel Detection, add the time of Channel Detection, simultaneously can not transmit ascending data constantly.Visible, when the channel idle of unlicensed spectrum being detected, continuing the transmission upstream data taking unlicensed spectrum, substantially increasing the channel utilization to unlicensed spectrum, also improving the efficiency of transmission of upstream data simultaneously.
In technique scheme, preferably, also comprise: the first judging unit 210, for judging whether the duration continuing the channel taken in described frequency resource reaches preset duration; Described processing unit 208 also for, when the duration that described first judging unit 210 judges to continue the channel taken in described frequency resource does not reach described preset duration, hold over channel in described frequency resource to described base-station transmission upstream data, and for when the duration that described first judging unit 210 judges to continue the channel taken in described frequency resource reaches described preset duration, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the duration of the channel in lasting acquisition frequency resource reaches preset duration, with when judging that the duration of the channel continued in acquisition frequency resource does not reach preset duration, hold over channel in frequency resource to base-station transmission upstream data, make terminal can take multiple subframe continuously in Preset Time and carry out transmit ascending data, improve the efficiency of transmission of upstream data; Simultaneously by when judging that the duration of the channel continued in acquisition frequency resource reaches preset duration, channel in stopping acquisition frequency resource is to base-station transmission upstream data, to guarantee while improving the channel utilization to unlicensed spectrum, justice can effectively utilize unlicensed spectrum, also have an opportunity to make other-end to take this mandate frequency spectrum.
In above-mentioned any one technical scheme, preferably, also comprise: setting unit 212, for taking duration according to maximum channel and described terminal arranges described preset duration the need of with an integer subframe transmit ascending data.
Particularly, if it is 6.5 milliseconds that maximum channel takies duration, when terminal needs with an integer subframe transmit ascending data, so terminal can only send at most 6 subframes when a data transfer, namely 6 milliseconds will stop busy channel, and now preset duration is 6 milliseconds; If it is 6.5 milliseconds that maximum channel takies duration, when terminal does not need with an integer subframe transmit ascending data, so terminal just can continue busy channel and takies duration to maximum channel when a data transfer, and also namely 6.5 milliseconds, now preset duration is maximum channel and takies duration 6.5 milliseconds.
In above-mentioned any one technical scheme, preferably, also comprise: the second judging unit 214, for judging whether described terminal exists upstream data waiting for transmission; Described processing unit 208 also for, when described second judging unit 214 judges that described terminal exists described upstream data waiting for transmission, hold over channel in described frequency resource to described base-station transmission upstream data, and for when described second judging unit 214 judges that described terminal does not exist described upstream data waiting for transmission, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether terminal exists upstream data waiting for transmission, with when judging that terminal exists upstream data waiting for transmission, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging that terminal does not exist upstream data waiting for transmission, channel in stopping acquisition frequency resource is to base-station transmission upstream data, avoid causing the wasting of resources without channel during data to be transmitted still in acquisition frequency resource, have an opportunity to make other-end to take this mandate frequency spectrum in time, further increasing the channel utilization to unlicensed spectrum.
In above-mentioned any one technical scheme, preferably, also comprise: the 3rd judging unit 216, the stopping for judging whether to receive the transmission of described base station takies the notice signaling of the channel in described frequency resource; Described processing unit 208 also for, when described 3rd judging unit 216 judges not receive described notice signaling, hold over channel in described frequency resource to described base-station transmission upstream data, and for when described 3rd judging unit 216 judges to receive described notice signaling, stop the channel taking in described frequency resource to described base-station transmission upstream data.
In this technical scheme, by judging whether the notice signaling of the channel received in the stopping acquisition frequency resource of base station transmission, with when judging not receive notice signaling, hold over channel in frequency resource to base-station transmission upstream data, make terminal can continue busy channel and complete transfer of data, improve data transmission efficiency and the channel utilization to unlicensed spectrum; Simultaneously by when judging to receive notice signaling, channel in stopping acquisition frequency resource is to base-station transmission upstream data, when making the business having occurred higher level in shared unlicensed spectrum (such as radar), the channel taking unlicensed spectrum can be stopped in time, thus guarantee that the business of higher level is processed in time.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of data transmission scheme based on unlicensed spectrum newly, can when the channel idle of unlicensed spectrum being detected, continue the transmission upstream data taking unlicensed spectrum, reduce the detection time of the channel of unlicensed spectrum, improve terminal channel utilization to unlicensed spectrum in transmit ascending data process, also improve the efficiency of transmission of upstream data simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. based on a data transmission method for unlicensed spectrum, be applicable to terminal, it is characterized in that, comprising:
Receive the upstream dispatching instructions that base station sends;
According to described upstream dispatching instructions, determine that described base station is the frequency resource in the unlicensed spectrum of described terminal distribution;
Whether the channel detected in described frequency resource is in idle condition;
When detecting that the channel in described frequency resource is in idle condition, continue to take channel in described frequency resource to described base-station transmission upstream data.
2. the data transmission method based on unlicensed spectrum according to claim 1, is characterized in that, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise:
Judge whether the duration continuing the channel taken in described frequency resource reaches preset duration;
When judging that the duration continuing the channel taken in described frequency resource does not reach described preset duration, hold over channel in described frequency resource to described base-station transmission upstream data;
When the duration judging to continue the channel taken in described frequency resource reaches described preset duration, stop the channel taking in described frequency resource to described base-station transmission upstream data.
3. the data transmission method based on unlicensed spectrum according to claim 2, is characterized in that, takies duration and described terminal arranges described preset duration the need of with an integer subframe transmit ascending data according to maximum channel.
4. the data transmission method based on unlicensed spectrum according to claim 1, is characterized in that, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise:
Judge whether described terminal exists upstream data waiting for transmission;
When judging that described terminal exists described upstream data waiting for transmission, hold over channel in described frequency resource to described base-station transmission upstream data;
When judging that described terminal does not exist described upstream data waiting for transmission, stop the channel taking in described frequency resource to described base-station transmission upstream data.
5. the data transmission method based on unlicensed spectrum according to claim 1, is characterized in that, continue to take step from the channel in described frequency resource to described base-station transmission upstream data after, also comprise:
The stopping judging whether to receive the transmission of described base station takies the notice signaling of the channel in described frequency resource;
When judging not receive described notice signaling, hold over channel in described frequency resource to described base-station transmission upstream data;
When judging to receive described notice signaling, stop the channel taking in described frequency resource to described base-station transmission upstream data.
6. based on a data transmission device for unlicensed spectrum, be applicable to terminal, it is characterized in that, comprising:
Receiving element, for receiving the upstream dispatching instructions that base station sends;
Determining unit, for according to described upstream dispatching instructions, determines that described base station is the frequency resource in the unlicensed spectrum of described terminal distribution;
Whether detecting unit, be in idle condition for the channel detected in described frequency resource;
Processing unit, when the channel for detecting in described frequency resource at described detecting unit is in idle condition, continues to take channel in described frequency resource to described base-station transmission upstream data.
7. the data transmission device based on unlicensed spectrum according to claim 6, is characterized in that, also comprise:
First judging unit, for judging whether the duration continuing the channel taken in described frequency resource reaches preset duration;
Described processing unit also for, when the duration that described first judging unit judges to continue the channel taken in described frequency resource does not reach described preset duration, hold over channel in described frequency resource to described base-station transmission upstream data, and for when the duration that described first judging unit judges to continue the channel taken in described frequency resource reaches described preset duration, stop the channel taking in described frequency resource to described base-station transmission upstream data.
8. the data transmission device based on unlicensed spectrum according to claim 7, is characterized in that, also comprise:
Setting unit, for taking duration and described terminal arranges described preset duration the need of with an integer subframe transmit ascending data according to maximum channel.
9. the data transmission device based on unlicensed spectrum according to claim 6, is characterized in that, also comprise:
Second judging unit, for judging whether described terminal exists upstream data waiting for transmission;
Described processing unit also for, when described second judging unit judges that described terminal exists described upstream data waiting for transmission, hold over channel in described frequency resource to described base-station transmission upstream data, and for when described second judging unit judges that described terminal does not exist described upstream data waiting for transmission, stop the channel taking in described frequency resource to described base-station transmission upstream data.
10. the data transmission device based on unlicensed spectrum according to claim 6, is characterized in that, also comprise:
3rd judging unit, the stopping for judging whether to receive the transmission of described base station takies the notice signaling of the channel in described frequency resource;
Described processing unit also for, when described 3rd judging unit judges not receive described notice signaling, hold over channel in described frequency resource to described base-station transmission upstream data, and for when described 3rd judging unit judges to receive described notice signaling, stop the channel taking in described frequency resource to described base-station transmission upstream data.
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