CN107949067A - The control method and relevant apparatus of a kind of Channel Detection - Google Patents
The control method and relevant apparatus of a kind of Channel Detection Download PDFInfo
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- CN107949067A CN107949067A CN201610891952.6A CN201610891952A CN107949067A CN 107949067 A CN107949067 A CN 107949067A CN 201610891952 A CN201610891952 A CN 201610891952A CN 107949067 A CN107949067 A CN 107949067A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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Abstract
An embodiment of the present invention provides the control method and relevant apparatus of a kind of Channel Detection, this method includes：Receive the scheduling grant that the physically row shared channel that base station is sent carries out uplink service, uplink scheduling license includes LBT type informations, the LBT type informations are used to indicate that the UE is pointed to carry out corresponding LBT detections operation in the destination channel of unlicensed spectrum, the concrete mode for being pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum according to indicated by the interval determines whether to execution LBT type informations；When the concrete mode of LBT detection operations of the UE according to indicated by the definite LBT type informations that perform in the uplink scheduling License Info in the interval, LBT type informations of the UE in the uplink scheduling License Info is pointed to progress LBT detections in the destination channel of unlicensed spectrum and operates.Implement the embodiment of the present invention, it is possible to increase the utilization rate of frequency spectrum resource.
Description
Technical field
The present invention relates to the control method and relevant device of field of communication technology, more particularly to a kind of Channel Detection.
Background technology
With the sharp increase of message volume, mandate frequency spectrum is increasingly not enough to provide the network capacity of higher.In order to
The utilization rate of frequency spectrum resource is further improved, can expand on the basis of frequency spectrum is authorized and use unlicensed spectrum.3GPP(3rd
Generation Partnership Project, third generation partner program) tissue proposes LAA (Licensed
Assisted Access, authorize auxiliary access) technology awarded with realizing in LTE (Long Term Evolution, Long Term Evolution)
Unlicensed spectrum is used on the basis of power frequency spectrum.In order to preferably be coexisted with unlicensed spectrum, LBT is introduced in LTE
(Listen Before Talk, listem-before-talk) mechanism so that LTE in unlicensed spectrum if do not accounted for when detecting channel busy
With the channel, just taken if detecting that channel is not busy.In existing LAA, when there is uplink and downlink data conversion, transmission node
The mode inefficiency of LBT detections is performed, causes frequency spectrum resource utilization rate not high.
The content of the invention
An embodiment of the present invention provides the control method and relevant device of a kind of Channel Detection, it is possible to increase LBT detections
Mechanism, improves frequency spectrum resource utilization rate.
An embodiment of the present invention provides a kind of control method of Channel Detection, is aided in applied to authorizing in access LAA technologies,
Including：
User equipment (UE) receives the uplink scheduling that the physically row shared channel PUSCH that base station is sent carries out uplink service
License Info, the uplink scheduling License Info include LBT type informations, and the LBT type informations are used to indicate carrying out
Before current uplink traffic transmission, the UE is pointed to carry out corresponding LBT detections operation in the destination channel of unlicensed spectrum,
Wherein, different LBT type informations correspond to different LBT detection modes of operation；
Determine that the UE is determined before the current uplink service, the downlink traffic transmission transmitted by the base station
Deadline, the UE that includes of the uplink scheduling License Info send the initial time two of the current uplink service
Time interval between person, and determine whether to perform the LBT types in the uplink scheduling License Info according to the interval
It is pointed to carry out the concrete mode of LBT detection operations indicated by information in the destination channel of unlicensed spectrum；
When the UE is signified according to the definite LBT type informations that perform in the uplink scheduling License Info in the interval
When that shows is pointed to carry out the concrete mode of LBT detection operations in the destination channel of unlicensed spectrum, the UE is according on described
LBT type informations in row scheduling grant information are pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum, and root
Current uplink traffic transmission is carried out according to the result of detection operation or without current uplink traffic transmission.
In the embodiment of the present invention, aid in accessing in LAA technologies authorizing, UE can determine the lower industry transmitted by tight base station
The UE that the deadline of business transmission, the uplink scheduling License Info include sends the starting of the current uplink service
The time interval of time between the two, and determine whether to perform in the uplink scheduling License Info according to the interval
The concrete mode for being pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum indicated by LBT type informations.Pass through
The embodiment of the present invention, can improve the efficiency for the mode for performing LBT detections, so as to improve frequency spectrum resource utilization rate.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, without creative efforts, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of flow diagram of the control method of Channel Detection provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of the control method of another Channel Detection provided in an embodiment of the present invention；
Fig. 3 is a kind of uplink and downlink data transfer schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of structure diagram of terminal provided in an embodiment of the present invention；
Fig. 5 is the structure diagram of another terminal provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to the scope of protection of the invention.
3GPP normal structures passed through in TSGRAN#65 plenary session based on LTE (Long TermEvolution, for a long time
Evolution) LAA (Licensed-AssistedAccess, auxiliary access) research project project verification, which, which mainly studies, exists
How LTE network is disposed in unlicensed spectrum, so that reaching justice effectively utilizes unlicensed spectrum, improve the number of LTE system
According to the purpose of transmission rate.It should be strongly noted that various embodiments of the present invention are not limited to LTE network, but can use
In LAA systems in future network (such as 5G).Various embodiments of the present invention are employed with LTE network in skill term description
For the technical term of reference, but this description is understood not to various embodiments of the present invention and can only be defined in LTE network.
Uses of the LTE to unlicensed spectrum has two ways, Yi Zhongshi：Unauthorized frequency is used only in downlink data transmission
Spectrum；Another kind is：Unlicensed spectrum can be used in uplink and downlink data transfer, uplink and downlink are multiple in a time division manner
Mode is on same unauthorized carrier wave.
Authorized when LTE system is deployed on frequency spectrum, terminal before transmitting data and is not required CCA
(ClearChannelAccess, clear channel assessment (CCA)) detect, terminal receive eNodeB (EvolvedNodeB, it is evolved
During UL-grant (upstream dispatching instructions) NodeB), data are sent in the corresponding sub-frame of uplink of the UL-grant.General
In the case of, current LTE system transmits data, i.e. a UL-grant instruction using dynamic dispatching mode, corresponds only on one
Row subframe.Terminal often receives the UL-grant instructions that an eNodeB is sent, can only be in a subframe corresponding with UL-grant
Data are sent in (a subframe time length is 1 millisecond).
Terminal need by it is non-award phase frequency spectrum to transmit 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 uplink spectrum utilization rate reduction of terminal, the reason is that：Terminal is being received
, it is necessary to first carry out LBT/CCA detections to the frequency resource of UL-grant instructions after to the UL-grant instructions of eNodeB, work as detection
To the frequency resource could be taken during channel idle.And LBT/CCA detections are also to need to take regular hour resource, then
The effective raising for improving LBT/CCA testing mechanisms and may consequently contribute to utilization rate to unlicensed spectrum resource.
Therefore, how to improve terminal becomes the channel utilization of unlicensed spectrum during upstream data is transmitted
Technical problem urgently to be resolved hurrily.
A kind of flow of the control method of Channel Detection provided in an embodiment of the present invention.Wherein, the control of the Channel Detection
Method can be applied to authorize in auxiliary access LAA technologies, be expanded with realizing on the basis of frequency spectrum is authorized using unauthorized frequency
Spectrum.In LAA technologies, in order to avoid communicating on occupied carrier wave, listem-before-talk LBT/CCA detections can be introduced
Technology.Its process is generally：Before signal transmission, transmission node (base station or terminal) needs to carry out LBT/ to transmission channel
CCA (Clear Channel Assessment, clear channel assessment (CCA)) is detected, and can be sentenced here using the method for energy measuring
It is fixed, when the energy of transmission channel exceedes specific threshold, it is believed that the transmission channel is occupied, and transmission node cannot be in the biography
It is transmitted on defeated channel and the transmission channel is observed in CCA detection times；When the energy of transmission channel is less than spy
When determining threshold value, it is believed that the transmission channel empty, transmission node can carry out data transmission on this channel.
Specifically, as detection destination channel whether in idle condition a kind of exemplary type (category or
Person type), when there is uplink service to need transmission, UE can detect or monitor the energy value of destination channel to judge the target
Whether channel occupied, the possible occupied scene of channel include it is very much, such as whether have around the UE miscellaneous equipment (such as
Other UE) just PUSCH data are being sent in destination channel.If the UE determines that the target channel is taken by miscellaneous equipment,
The UE can continue to monitor when next listening period arrives, and can also no longer be monitored according to instruction.If the UE listens to mesh
It is idle to mark channel resource, then the UE can take the destination channel immediately.This mode has the characteristics that response is fast.
Specifically, another exemplary type of idle condition whether is in as detection destination channel
(category either type) UE detections or whether monitor destination channel resource idle, can generate one and keep out of the way random number L
To determine to need the time (defer period) kept out of the way, the value range of random number L may be greater than the integer equal to 0.
Even if it is idle (idle) that the UE detects or listen to destination channel resource in this back off time, but the UE is still
Continue to monitor destination channel, if detecting, L destination channel terminates all in idle condition, back off time, while the UE is just
The destination channel can be taken and carry out uplink traffic transmission.If UE detects channel status to be busy (such as other
UE takes), then the UE can determine that equipment is unable to busy channel within this cycle, then the UE can wait until next cycle
Predeterminated position continues to detect；The method of another possibility is, if UE detects channel status to be busy (such as by it
Its UE takes), then UE generations one are extended keeps out of the way random number to continue to monitor destination channel, and such a method is equivalent to continuation
Generate the time (defer period) kept out of the way.The UE can after L detection time detects channel status for the free time
To take destination channel, the occupancy destination channel time is T.The benefit of such a mode, which includes working as, has multiple equipment to need competitive target
When channel resource, multiple equipment generation different may keep out of the way random number, generation minimum keep out of the way the wait of random number when
Between it is most short, therefore " triumph " can be competed and rapidly take destination channel resource.So as to reduce distinct device needs while account for
With the conflict situations between channel.Between different user devices, or the different business of same user equipment, have different preferential
Level.Such as the priority of the priority ratio user equipment B of user equipment A is high, or user equipment A is currently needed for while uplink
Speech business and data service, and the priority for presetting the priority ratio data service of speech business will height.Correspondingly, not
The user equipment or business of same priority can keep out of the way random number L with preset rules generation different range, so that high preferential
The user equipment or business of level easier can compete " triumph ".In addition, it is necessary to special instruction, keeps out of the way random number L
The method of generation can include, according to default rule into row stochastic choosing in the competition window that one contains random number
Take, which is made of the several of continuously or discontinuously scope.For example, some competition window is (0, L ... ..., W),
Wherein, for random number L included by this competition window, W is positive integer, and the competition window of this (0, L ... ..., W) is appreciated that
For the set of random number L.For another example some includes random number 1,2,3, competition window (1,2,3), then the random number produced
The possibility of L is 1, either 2 or 3；The window size of competition window (1,2,3) is 3.Under some simple scenes, this
The size of competition window can be fixed；And under some complex competition scenes, the big I of this competition window
To be adjusted and respective change, such as it is changed into (1,2,3,4,5,6), or is just provided with multiple and different sizes and numerical value in advance
The competition window of scope is for selection, such as can pre-define competition window A (1,2,3), competition window B (1,2,3,4,5,
6).Exemplary, base station can trigger the race condition for checking each equipment in certain cell of property periodically or based on event,
Whether often see has collision, if there is collision, bust this, then can expand competition window and be twice；Otherwise, if usual industry
Be engaged in transmission success, then competition window remain unchanged.Another exemplary, base station can be periodically or based on event triggering property
The race condition for checking each equipment in certain cell, whether often see has collision, if there is collision, bust this then can be with
That larger in default two competition windows is assumed in selection；Otherwise, if ordinary business practice transmission success, competition window is kept
It is constant.
Exemplary, Channel holding time T described above can be a fixed value (such as fixed duration or fixation
Frame length), base station can be pre-configured with a Channel holding time T and be more than 0 to the UE, T.When the fixed value has consumed, then currently
Channel must be discharged so that other equipment competes use by taking the UE of destination channel.
Specifically, LBT type informations can be included in the uplink tune for allowing to carry out uplink service that base station is sent to UE
Spend in License Info, LBT type informations can include following species：
Type information 1：
UE is indicated before current uplink traffic transmission is carried out, the UE be pointed in the destination channel of unlicensed spectrum not into
The corresponding LBT detections operation of row.
Type information 2：
UE is indicated before current uplink traffic transmission is carried out, which is pointed to carry out in the destination channel of unlicensed spectrum
Corresponding LBT detections operation, can be at once into the trade if finding that destination channel resource is idle in the time range of detection
Preceding uplink traffic transmission.Such a mode, which will not generate, keeps out of the way random number.
Type information 3：
UE is indicated before current uplink traffic transmission is carried out, which is pointed to carry out in the destination channel of unlicensed spectrum
Corresponding LBT detections operation, during operation is detected, can keep out of the way random number L, this competition according to competition window to generate
The size of window is fixed, will not be changed because of competition failure or other reasons.In the process, UE detection or
Whether idle monitor destination channel resource, and generate one and keep out of the way random number L to determine time (defer that needs are kept out of the way
Period), the value range of random number L may be greater than the integer equal to 0.Even if the UE is detected in this back off time
To or to listen to destination channel resource idle (idle), but the UE continues to monitor destination channel, if detecting L times
Destination channel terminates all in idle condition, then back off time, while the UE can take the destination channel and carry out industry
Business transmission.If UE detects that channel status is busy (such as being taken by other UE), which can determine at this
Equipment is unable to busy channel in cycle.
Type information 4：
UE is indicated before current uplink traffic transmission is carried out, which is pointed to carry out in the destination channel of unlicensed spectrum
Corresponding LBT detections operation, during operation is detected, can keep out of the way random number L, such a operation according to competition window to generate
Mode is similar with the mode indicated by type information 3, but difference be this competition window size be it is unfixed, can be because competing
Strive failure or other reasons and change.
Fig. 2 shows the exemplary flow of the data transmission method according to an embodiment of the invention based on unlicensed spectrum
Figure.As shown in Fig. 2, idiographic flow is as follows：
Step 1, user equipment (UE) has first determined that current uplink service needs to send to base station, and UE sends upper industry to base station
Business dispatch request, request base station distribution uplink service resource；And receive the uplink scheduling grant instruction of base station (such as eNB) transmission
Or information；
Step 2, UE determines the base station in the unlicensed spectrum of the terminal distribution according to the upstream dispatching instructions
Frequency resource；
Step 3, before current uplink service is carried out, whether the channel that UE is detected in the frequency resource is in idle shape
State；
Step 4, when the channel on detecting the frequency resource is in idle condition, the frequency resource is persistently taken
On channel to the base station transmit upstream data, when detecting that the channel in the frequency resource is in busy state, after
The continuous detection process waited or restart step 1.
Specifically, when terminal needs to transmit upstream data by unlicensed spectrum, if upper line number waiting for transmission in terminal
Transformation task could be completed according to 10 subframes (assuming that a subframe time length is 1 millisecond) are needed, then terminal only need to be in head
It is secondary to carry out a Channel Detection when receiving upstream dispatching instructions, idle shape is in the channel determined in the frequency resource of distribution
State, it is possible to 10 subframes are persistently taken during being needed after to transmit upstream data, and different from correlation technique：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 the channel for detecting unlicensed spectrum is empty
Idle, persistently takes 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 at the same time.
Fig. 1 is a kind of flow diagram of the control method of Channel Detection provided in an embodiment of the present invention.
101st, user equipment (UE) receives the uplink that the physically row shared channel PUSCH that base station is sent carries out uplink service
Scheduling grant information, the uplink scheduling License Info include LBT type informations, and the LBT type informations are used to indicate
Before carrying out current uplink traffic transmission, the UE is pointed to carry out corresponding LBT detections in the destination channel of unlicensed spectrum
Operation, wherein, different LBT type informations correspond to different LBT detection modes of operation.
Wherein, LBT type informations are as it was noted above, can be type information 1, type information 2, type information 3, type letter
The one of which of breath 4.Preferably, in embodiments of the present invention, LBT type informations can be type information 3 or type information
4。
In the embodiment of the present invention, in LAA technologies, base station can both be operated in mandate frequency range, can also be operated in and not award
Weigh frequency range.When base station carries out downlink data transmission with UE, UE can obtain the deadline information of this downlink data transmission, UE
Can include cell phone, tablet computer, palm PC, personal digital assistant (Personal Digital Assistant,
PDA), mobile internet device (Mobile Internet Device, MID), intelligent wearable device (such as intelligent watch, intelligence
Bracelet etc.) etc. each Terminal Type, the embodiment of the present invention be not construed as limiting.
102nd, determine that the UE is determined before the current uplink service, the downlink business transmitted by the base station
When the UE that the deadline of transmission, the uplink scheduling License Info include sends the starting of the current uplink service
Between time interval between the two, and determine whether to perform the LBT in the uplink scheduling License Info according to the interval
It is pointed to carry out the concrete mode of LBT detection operations indicated by type information in the destination channel of unlicensed spectrum.
In the embodiment of the present invention, deadline information can include but is not limited to deadline (i.e. downlink data transmission
At least one of end time) and deadline corresponding system subframe grade.Deadline can turn according to preset rules
Corresponding system subframe number is changed to, deadline corresponding system subframe number is corresponding under being transmitted for base station with first terminal here
System subframe number, such as base station under LTE system and the corresponding system subframe number of first terminal transmission.Preset rules can be existing
Conversion method, the embodiment of the present invention are not construed as limiting.
Optionally, described before the current uplink service, the downlink business transmitted by the base station is used
The uplink service that is carried out with the physically row shared channel PUSCH of carrier wave used in carrier wave it is identical.
Optionally, the UE sends resource scheduling request by Physical Uplink Control Channel PUCCH to the base station.
In the embodiment of the present invention, in the case where same carrier wave is with base station, UE support dispatch request (Scheduling Request,
SR on the basis of) sending, PUCCH (Physical Uplink Control Channel, physical uplink control letter can be passed through
Road) UCI (Uplink Control Information, ascending control information) to base station send dispatch request.Same carrier wave
Can be understood as base station and carrier wave used in UE downlink data transmissions and base station is made with UE progress PUCCH uplink traffic transmissions
Carrier wave is identical.Wherein, one or more channels can be included under a carrier wave.
Optionally, when definite before the current uplink service, the downlink traffic transmission transmitted by the base station
Deadline, the UE that includes of the uplink scheduling License Info send the initial time two of the current uplink service
When time interval between person is less than or equal to preset value, determine not perform the LBT in the uplink scheduling License Info
It is pointed to carry out the concrete mode of LBT detection operations indicated by type information in the destination channel of unlicensed spectrum.If up
Included LBT type informations can be type information 3 or type information 4 in scheduling grant information, then when it is definite immediately
Before the current uplink service, the deadline of the downlink traffic transmission transmitted by the base station, the uplink scheduling are permitted
Can the UE that includes of information send the time interval of the initial time of the current uplink service between the two be less than or
During equal to preset value, determine not perform indicated by the type information 3 or type information 4 in the uplink scheduling License Info
It is pointed to carry out the concrete mode of LBT detection operations in the destination channel of unlicensed spectrum.
Optionally, when definite before the current uplink service, the downlink traffic transmission transmitted by the base station
Deadline, the UE that includes of the uplink scheduling License Info send the initial time two of the current uplink service
When time interval between person is more than preset value, determine to perform the LBT type informations institute in the uplink scheduling License Info
Indicate to be pointed to carry out the concrete mode that LBT detections operate in the destination channel of unlicensed spectrum, that is, continue to execute type
Information 3 or type information 4.
Optionally, when the UE determines not perform the LBT classes in the uplink scheduling License Info according to the interval
Indicated by type information be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode when, the UE
It is pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum using other LBT type informations, and is operated according to detection
Result carry out current uplink traffic transmission or without current uplink traffic transmission.In this optional embodiment, if UE
Non- award is pointed to according to indicated by the definite LBT type informations that do not perform in the uplink scheduling License Info in the interval
When weighing the concrete mode that LBT detection operations are carried out in the destination channel of frequency spectrum, the UE can use other LBT type informations pair
LBT detection operations are carried out in the destination channel of unlicensed spectrum, such as the operation side corresponding to 2 information of type can be used
Formula carries out.The mode of this replacement is proved to be beneficial, it is possible to increase the efficiency of LBT/CCA, so as to save the time, carries
The utilization rate of unlicensed spectrum resource is supplied.
Optionally, the time interval is 35us, or 25us, or 16us.
103rd, when the UE determines to perform the LBT type informations in the uplink scheduling License Info according to the interval
Indicated when being pointed to carry out the concrete mode of LBT detection operations in the destination channel of unlicensed spectrum, the UE is according to institute
The LBT type informations in uplink scheduling License Info are stated to be pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum,
And current uplink traffic transmission is carried out or without current uplink traffic transmission according to the result of detection operation.For example, can be with
According to the mode of operation corresponding to type information 2.For UE before current uplink traffic transmission is carried out, which is pointed to unauthorized frequency
Corresponding LBT detections operation is carried out in the destination channel of spectrum, if finding destination channel resource space in the time range of detection
Spare time, then can carry out current uplink traffic transmission at once.Such a mode, which will not generate, keeps out of the way random number.
It should be noted that the so-called result according to detection operation carries out current uplink traffic transmission or without current
Uplink traffic transmission, general there will be two kinds of situations.A kind of situation is to detect that destination channel is busy, and UE is then without working as at this time
Preceding uplink traffic transmission.Another situation is to detect the destination channel free time, then UE can carry out current uplink service biography at this time
It is defeated.
It is exemplary in the embodiment of the present invention, after base station receives the dispatch request of UE transmissions, when the priority of UE is being worked as
In the case of being scheduled under preceding base station and having ascending resource to be scheduled, base station can respond the dispatch request, and to
First terminal sends the uplink scheduling License Info (Uplink Grant, UL grant) of uplink service.
In the embodiment of the present invention, aid in accessing in LAA technologies authorizing, UE can determine the lower industry transmitted by tight base station
The UE that the deadline of business transmission, the uplink scheduling License Info include sends the starting of the current uplink service
The time interval of time between the two, and determine whether to perform in the uplink scheduling License Info according to the interval
The concrete mode for being pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum indicated by LBT type informations.Pass through
The embodiment of the present invention, can improve the efficiency for the mode for performing LBT detections, so as to improve frequency spectrum resource utilization rate.
Fig. 3 is referred to incorporated by reference to Fig. 1 and in the lump, Fig. 3 is that a kind of uplink and downlink data transfer provided in an embodiment of the present invention is shown
It is intended to.As shown in Figure 3, it is assumed that each small lattice represent a subframe, it is assumed that uplink scheduling license is transmitted in n-th of subframe in base station
During information, UE can be controlled at least to carry out PUSCH transmission in the n-th+4 subframes.The uplink scheduling that UE receives base station transmission is permitted
Can information, can confirm that before the transmission of PUSCH uplink services, UE carry out downlink transfer deadline, and UE carry out
The transmission time of PUSCH uplink services, according to the time interval between the two times, UE judges base station and UE downlink datas
The deadline of transmission and base station send the interval of the time of uplink authorization information whether within default time range.Specifically
The value of time interval can be 35us, or 25us, or 16us.This result judged is applied in the specific stream shown in Fig. 1
Cheng Zhong.
The border of a subframe is not located at when the downlink transfer deadline of UE uplink traffic transmission time starteds or UE
When, the initial signal (initial retained for the thick synchronization of downlink and/or channel can be sent by remaining symbol in the burst
) or stick signal (reservation signal) signal.
Referring to Fig. 4, Fig. 4 is a kind of structure diagram of terminal provided in an embodiment of the present invention, for performing the present invention
The control method for the Channel Detection that embodiment provides.As shown in figure 4, the terminal can include：
Receiving unit 401, the physically row shared channel PUSCH for receiving base station transmission carry out uplink service
Row scheduling grant information, the uplink scheduling License Info include LBT type informations, and the LBT type informations are used to indicate
Before current uplink traffic transmission is carried out, the UE is pointed to carry out corresponding LBT inspections in the destination channel of unlicensed spectrum
Operation is surveyed, wherein, different LBT type informations correspond to different LBT detection modes of operation.
Wherein, LBT type informations are as it was noted above, can be type information 1, type information 2, type information 3, type letter
The one of which of breath 4.Preferably, in embodiments of the present invention, LBT type informations can be type information 3 or type information
4。
In the embodiment of the present invention, in LAA technologies, base station can both be operated in mandate frequency range, can also be operated in and not award
Weigh frequency range.When base station carries out downlink data transmission with UE, UE can obtain the deadline information of this downlink data transmission, UE
Can include cell phone, tablet computer, palm PC, personal digital assistant (Personal Digital Assistant,
PDA), mobile internet device (Mobile Internet Device, MID), intelligent wearable device (such as intelligent watch, intelligence
Bracelet etc.) etc. each Terminal Type, the embodiment of the present invention be not construed as limiting.
Determination unit 402, for determining that the UE determines that before the current uplink service base station is sent out
The UE that the deadline for the downlink traffic transmission sent, the uplink scheduling License Info include sends the current uplink
The time interval of the initial time of business between the two, and determine whether to perform the uplink scheduling license according to described be spaced
It is pointed to carry out the specific side of LBT detection operations indicated by LBT type informations in information in the destination channel of unlicensed spectrum
Formula.
In the embodiment of the present invention, deadline information can include but is not limited to deadline (i.e. downlink data transmission
At least one of end time) and deadline corresponding system subframe grade.Deadline can turn according to preset rules
Corresponding system subframe number is changed to, deadline corresponding system subframe number is corresponding under being transmitted for base station with first terminal here
System subframe number, such as base station under LTE system and the corresponding system subframe number of first terminal transmission.Preset rules can be existing
Conversion method, the embodiment of the present invention are not construed as limiting.
Optionally, the determination unit specifically includes：
First determination unit, for when determining before the current uplink service, transmitted by the base station under
The UE that the deadline of industry business transmission, the uplink scheduling License Info include sends the current uplink service
When the time interval of initial time between the two is less than or equal to preset value, determine not perform the uplink scheduling license letter
It is pointed to carry out the concrete mode of LBT detection operations indicated by LBT type informations in breath in the destination channel of unlicensed spectrum；
Can be type information 3 or type information 4 if up LBT type informations included in scheduling grant information, then when
Determine before the current uplink service, the deadline of the downlink traffic transmission transmitted by the base station, it is described on
The UE that row scheduling grant information includes sends the time interval of the initial time of the current uplink service between the two
During less than or equal to preset value, determine not perform type information 3 or type letter in the uplink scheduling License Info
It is pointed to carry out the concrete mode of LBT detection operations indicated by breath 4 in the destination channel of unlicensed spectrum.
Second determination unit, for when determining before the current uplink service, transmitted by the base station under
The UE that the deadline of industry business transmission, the uplink scheduling License Info include sends the current uplink service
When the time interval of initial time between the two is more than preset value, determine to perform the LBT in the uplink scheduling License Info
It is pointed to carry out the concrete mode that LBT detections operate in the destination channel of unlicensed spectrum indicated by type information, that is, after
It is continuous to perform type information 3 or type information 4.
Execution unit 403, for determining to perform in the uplink scheduling License Info according to the interval as the UE
LBT type informations indicated by be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode when,
LBT type informations of the UE in the uplink scheduling License Info is pointed to carry out in the destination channel of unlicensed spectrum
LBT detection operations, and current uplink traffic transmission is carried out according to the result of detection operation or is passed without current uplink service
It is defeated.Optionally, the execution unit, is additionally operable to when the UE determines that not perform the uplink scheduling permits according to the interval
It is pointed to carry out the specific of LBT detection operations in the destination channel of unlicensed spectrum indicated by LBT type informations in information
During mode, the UE is pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum using other LBT type informations,
And current uplink traffic transmission is carried out or without current uplink traffic transmission according to the result of detection operation.This optional implementation
In mode, if UE determines not perform the LBT type informations meaning in the uplink scheduling License Info according to the interval
When that shows is pointed to carry out the concrete mode of LBT detection operations in the destination channel of unlicensed spectrum, the UE can use it
His LBT type informations are pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum, such as can be believed using type 2
Corresponding mode of operation is ceased to carry out.For UE before current uplink traffic transmission is carried out, which is pointed to unlicensed spectrum
Corresponding LBT detections operation is carried out in destination channel, if finding that destination channel resource is idle in the time range of detection,
Current uplink traffic transmission can be carried out at once.Such a mode, which will not generate, keeps out of the way random number.The mode of this replacement is proved to
It is beneficial, it is possible to increase the efficiency of LBT/CCA, so as to save the time, there is provided the utilization rate of unlicensed spectrum resource.
It should be noted that the so-called result according to detection operation carries out current uplink traffic transmission or without current
Uplink traffic transmission, general there will be two kinds of situations.A kind of situation is to detect that destination channel is busy, and UE is then without working as at this time
Preceding uplink traffic transmission.Another situation is to detect the destination channel free time, then UE can carry out current uplink service biography at this time
It is defeated.
Optionally, described before the current uplink service, the downlink business transmitted by the base station is used
The uplink service that is carried out with the physically row shared channel PUSCH of carrier wave used in carrier wave it is identical.
In the embodiment of the present invention, in the case where same carrier wave is with base station, UE support dispatch request (Scheduling Request,
SR on the basis of) sending, PUCCH (Physical Uplink Control Channel, physical uplink control letter can be passed through
Road) UCI (Uplink Control Information, ascending control information) to base station send dispatch request.Same carrier wave
Can be understood as base station and carrier wave used in UE downlink data transmissions and base station is made with UE progress PUCCH uplink traffic transmissions
Carrier wave is identical.Wherein, one or more channels can be included under a carrier wave.
Optionally, described device further includes request unit, for by Physical Uplink Control Channel PUCCH to the base station
Send resource scheduling request.
Optionally, the time interval is 35us, or 25us, or 16us.
Referring to Fig. 5, Fig. 5 is the structure diagram of another kind UE provided in an embodiment of the present invention, for performing the present invention
The control method for the Channel Detection that embodiment provides.As shown in figure 5, the UE1400 can include：At least one processor 1401,
Such as CPU, at least one input unit 1402, at least one output device 1403, the grade component of memory 1404.Wherein, these
Component is communicatively coupled by one or more bus 1405.It will be understood by those skilled in the art that the terminal shown in Fig. 5
Structure do not form restriction to the embodiment of the present invention, it may be used also either busbar network or hub-and-spoke configuration
With including than illustrating more or fewer components, either combining some components or different components arrangement.Wherein：
In the embodiment of the present invention, input unit 1402 can include wireline interface, wave point etc., can be used for obtaining base
Signal that downlink of standing is sent etc..Output device 1403 can include wireline interface, wave point etc., can be used for base station uplink
Transmission signal etc..
In the embodiment of the present invention, memory 1404 can be high-speed RAM memory or non-labile memory
(non-volatile memory), for example, at least a magnetic disk storage.Memory 1404 optionally can also be at least one
It is located remotely from the storage device of aforementioned processor 1401.A kind of as shown in figure 5, memory 1404 as computer-readable storage medium
In can include operating system, application program and data etc., the embodiment of the present invention is not construed as limiting.
In the terminal shown in Fig. 5, processor 1401 can be used for calling in memory 1404 application program that stores with
Perform following operation：
Behind UE random access base stations, control output device 1403 is sent out by Physical Uplink Control Channel PUCCH to base station
Send dispatch request；
Control input device 1402 receives the uplink scheduling License Info of base station in response dispatch request transmission, instruction letter
When breath includes being used to indicate that UE responds the starting of the uplink authorization information and base station progress Physical Uplink Shared Channel PUSCH transmission
Between and LBT type informations, the LBT type informations be used to indicate before current uplink traffic transmission is carried out, described UE pairs
Corresponding LBT detections operation is carried out in the destination channel of unlicensed spectrum, wherein, different LBT type informations correspond to not
Same LBT detection modes of operation, determine that the UE is determined before the current uplink service, transmitted by the base station
The UE that the deadline of downlink traffic transmission, the uplink scheduling License Info include sends the current uplink service
Initial time time interval between the two, and determine whether to perform the uplink scheduling License Info according to the interval
In LBT type informations indicated by be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode；When
The UE is pointed to according to indicated by the definite LBT type informations that perform in the uplink scheduling License Info in the interval
When the concrete mode of LBT detection operations is carried out in the destination channel of unlicensed spectrum, the UE permits according to the uplink scheduling
LBT type informations in information are pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum, and are operated according to detection
Result carry out current uplink traffic transmission or without current uplink traffic transmission.Need what is illustrated, shown in Fig. 5
UE can perform part or all technical solutions in embodiment of the method and device embodiment, and this will not be repeated here.
By the embodiment of the present invention, the efficiency for the mode for performing LBT detections can be improved, so as to improve frequency spectrum resource utilization
Rate.
Module or submodule in all embodiments of the invention, can be by universal integrated circuit, such as CPU, or passes through
ASIC (Application Specific Integrated Circuit, application-specific integrated circuit) is realized.
It should be noted that for foregoing each embodiment of the method, in order to be briefly described, therefore it is all expressed as to a system
The combination of actions of row, but those skilled in the art should know, the present invention and from the limitation of described sequence of movement, because
For according to the application, certain some step can use other orders or be carried out at the same time.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, involved action and module not necessarily this Shen
Please be necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in some embodiment
Part, may refer to the associated description of other embodiment.
The steps in the embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.
Unit in base station of the embodiment of the present invention and terminal can be combined, divided and deleted according to actual needs.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, abbreviation RAM) etc..
Detailed Jie has been carried out to the control method and relevant device of a kind of Channel Detection provided in an embodiment of the present invention above
Continue, specific case used herein is set forth the principle of the present invention and embodiment, and the explanation of above example is only
It is the method and its core concept for being used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to this hair
Bright thought, there will be changes in specific embodiments and applications, in conclusion this specification content should not manage
Solve as limitation of the present invention.
Claims (12)
1. a kind of control method of Channel Detection, aids in access LAA technologies applied to authorizing, it is characterised in that including：
User equipment (UE) receives the uplink scheduling license that the physically row shared channel PUSCH that base station is sent carries out uplink service
Information, the uplink scheduling License Info include LBT type informations, and the LBT type informations are used to indicate carrying out currently
Before uplink traffic transmission, the UE is pointed to carry out corresponding LBT detections operation in the destination channel of unlicensed spectrum, its
In, different LBT type informations correspond to different LBT detection modes of operation；
Determine cutting for the downlink traffic transmission that the UE is determined before the current uplink service, transmitted by the base station
The UE that only time, the uplink scheduling License Info include send both initial times of the current uplink service it
Between time interval, and according to it is described interval determine whether to perform the LBT type informations in the uplink scheduling License Info
The indicated concrete mode for being pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum；
When the UE is according to indicated by the definite LBT type informations that perform in the uplink scheduling License Info in the interval
When being pointed to carry out the concrete mode of LBT detection operations in the destination channel of unlicensed spectrum, the UE is according to the uplink tune
LBT type informations in degree License Info are pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum, and according to inspection
The result for surveying operation carries out current uplink traffic transmission or without current uplink traffic transmission.
2. according to the method described in claim 1, it is characterized in that, described determine that the UE is determined immediately in the current uplink
Before business, the deadline of the downlink traffic transmission transmitted by the base station, the uplink scheduling License Info include
The UE sends the time interval of the initial time of the current uplink service between the two, and is determined whether according to the interval
Perform be pointed to indicated by the LBT type informations in the uplink scheduling License Info unlicensed spectrum destination channel it is enterprising
The concrete mode of row LBT detection operations, including：
When definite before the current uplink service, the deadline of the downlink traffic transmission transmitted by the base station,
The UE that the uplink scheduling License Info includes send the initial time of the current uplink service between the two when
Between interval when being less than or equal to preset value, the definite LBT type informations institute that do not perform in the uplink scheduling License Info
Indicate to be pointed to carry out the concrete mode that LBT detections operate in the destination channel of unlicensed spectrum；
When definite before the current uplink service, the deadline of the downlink traffic transmission transmitted by the base station,
The UE that the uplink scheduling License Info includes send the initial time of the current uplink service between the two when
Between interval when being more than preset value, be pointed to indicated by the definite LBT type informations that perform in the uplink scheduling License Info
The concrete mode of LBT detection operations is carried out in the destination channel of unlicensed spectrum.
3. method according to claim 1 or 2, it is characterised in that the method further includes：
When the UE is according to indicated by the definite LBT type informations that do not perform in the uplink scheduling License Info in the interval
Be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode when, the UE uses other LBT classes
Type information is pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum, and according to the result of detection operation into the trade
Preceding uplink traffic transmission or without current uplink traffic transmission.
4. according to the method described in claim 1, it is characterised in that it includes：
It is described before the current uplink service, carrier wave used in the downlink business transmitted by the base station and described
Carrier wave used in the uplink service that physically row shared channel PUSCH is carried out is identical.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
The UE sends resource scheduling request by Physical Uplink Control Channel PUCCH to the base station.
6. according to claim 1-5 any one of them methods, it is characterised in that the time interval is 35us, or 25us, or
16us。
7. a kind of Channel Detection device, aids in access LAA technologies applied to authorizing, it is characterised in that including：
Receiving unit, the physically row shared channel PUSCH for receiving base station transmission carry out the uplink scheduling of uplink service
License Info, the uplink scheduling License Info include LBT type informations, and the LBT type informations are used to indicate carrying out
Before current uplink traffic transmission, the UE is pointed to carry out corresponding LBT detections operation in the destination channel of unlicensed spectrum,
Wherein, different LBT type informations correspond to different LBT detection modes of operation；
Determination unit, for determining that the UE is determined before the current uplink service, transmitted by the base station under
The UE that the deadline of industry business transmission, the uplink scheduling License Info include sends the current uplink service
The time interval of initial time between the two, and determine whether to perform in the uplink scheduling License Info according to the interval
LBT type informations indicated by be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode；
Execution unit, for determining to perform the LBT classes in the uplink scheduling License Info according to the interval as the UE
Indicated by type information be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode when, the UE
LBT type informations in the uplink scheduling License Info are pointed to carry out LBT inspections in the destination channel of unlicensed spectrum
Operation is surveyed, and current uplink traffic transmission is carried out or without current uplink traffic transmission according to the result of detection operation.
8. the device according to right wants 7, it is characterised in that the determination unit specifically includes：
First determination unit, determines before the current uplink service, the lower industry transmitted by the base station for working as
The UE that the deadline of business transmission, the uplink scheduling License Info include sends the starting of the current uplink service
When the time interval of time between the two is less than or equal to preset value, determine not perform in the uplink scheduling License Info
LBT type informations indicated by be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode；
Second determination unit, determines before the current uplink service, the lower industry transmitted by the base station for working as
The UE that the deadline of business transmission, the uplink scheduling License Info include sends the starting of the current uplink service
When the time interval of time between the two is more than preset value, determine to perform the LBT types in the uplink scheduling License Info
It is pointed to carry out the concrete mode of LBT detection operations indicated by information in the destination channel of unlicensed spectrum.
9. the device according to right wants 7 or 8, it is characterised in that described device includes：
The execution unit, is additionally operable to when the UE determines not perform in the uplink scheduling License Info according to the interval
LBT type informations indicated by be pointed in the destination channel of unlicensed spectrum carry out LBT detection operation concrete mode when,
The UE is pointed to carry out LBT detection operations in the destination channel of unlicensed spectrum using other LBT type informations, and according to inspection
The result for surveying operation carries out current uplink traffic transmission or without current uplink traffic transmission.
10. device according to claim 7, it is characterised in that including：
It is described before the current uplink service, carrier wave used in the downlink business transmitted by the base station and described
Carrier wave used in the uplink service that physically row shared channel PUSCH is carried out is identical.
11. device according to claim 7, it is characterised in that described device further includes：
Request unit, for sending resource scheduling request to the base station by Physical Uplink Control Channel PUCCH.
12. according to claim 7-11 any one of them devices, it is characterised in that including：
The time interval is 35us, or 25us, or 16us.
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| CN201610891952.6A CN107949067A (en) | 2016-10-12 | 2016-10-12 | The control method and relevant apparatus of a kind of Channel Detection |
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Application publication date: 20180420 |