CN107295672A

CN107295672A - Up CCA detection method and device, terminal

Info

Publication number: CN107295672A
Application number: CN201610194205.7A
Authority: CN
Inventors: 苟伟; 毕峰; 赵亚军; 杨玲
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2017-10-24
Anticipated expiration: 2036-03-30
Also published as: WO2017167059A1; CN107295672B

Abstract

The invention provides a kind of up CCA detection method and device, terminal.Wherein, this method includes：It is determined that the period of the subframe for carrying out up clear channel assessment (CCA) CCA detections, wherein, punctum is not later than the beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe at the end of the period；Punctum is no earlier than the beginning boundary of the top n OFDM symbol of the starting OFDM symbol for sending upstream data at the beginning of period；N is positive integer；Up clear channel assessment (CCA) CCA detections are carried out within the period.By the present invention, solve in correlation technique when multiple user equipmenies, which are scheduled in same subframe, carries out data transmission, how user equipment performs CCA detections to ensure the problem of different user equipmenies successfully carry out CCA detections.

Description

Up CCA detection method and device, terminal

Technical field

The present invention relates to the communications field, in particular to a kind of up CCA detection method and device, terminal.

Background technology

At present, the communication network of Long Term Evolution (Long-Term Evolution, abbreviation LTE) is all to be deployed in award Runed in power carrier wave, with LTE development, some companies are proposed " it is recommended that research LTE is deployed in the class in unauthorized carrier wave Topic ", the Qualcomm in such as U.S. thinks：With the rapid growth of data service, in the near future, authorize carrier wave can not Bear fastext and increase the huge data volume brought.Consider by disposing LTE in unauthorized carrier wave, awarded with this to share The data traffic in carrier wave is weighed, business can be solved and increase the data volume pressure brought.Meanwhile, unauthorized carrier wave has following spy Point：On the one hand, because unauthorized carrier wave need not be bought, or carrier resource is zero cost, thus unauthorized carrier wave it is free or Low expense；On the other hand, because personal, enterprise can participate in deployment, the equipment of equipment vendor can also, therefore unauthorized carrier wave Requirements for sale it is low；Furthermore, unauthorized carrier wave has sharing, when all being runed wherein by multiple different systems or same system When the different operators of system are runed wherein, it may be considered that the mode of some shared resources, to improve carrier wave efficiency.

In summary, although LTE, which is deployed in unauthorized carrier wave, has obvious advantage, still, during deployment, Still there is problem；Wherein, wireless access technology many (across different communication standards, cooperation is difficult, and network topology is various) and wirelessly Access website is more (number of users is big, and cooperation difficulty is big, and centralized management expense is big).It is unauthorized because wireless access technology is more There will be various wireless systems in carrier wave, be difficult to coordinate each other, serious interference.Therefore, it is deployed in for LTE non- Authorize in carrier wave, it is still desirable to support the control of unauthorized carrier wave, when majority state requires that system is disposed in unauthorized carrier wave, Need to support listem-before-talk mechanism.It can be avoided between adjacent system by listem-before-talk mechanism while using unauthorized carrier wave For the interference brought each other.And competition fallback mechanism is further introduced into, i.e., neighbouring system website (is usually same system Neighbouring transmission node), the neighbouring transmission node of identical systems can be avoided after fallback mechanism by competing while using unauthorized The interference brought during carrier wave.Also, provided in control, use the equipment (including base station and user equipment (UE)) of unauthorized carrier wave All be before transmitting need to carry out listem-before-talk mechanism (i.e. clear channel assessment (CCA) (Clear Channel Assessment, CCA), also referred to as LBT), when the channel is idle, equipment could use unauthorized carrier channel to carry out data transmission.

In LTE system, the problem of having following：

If the multiple user equipment (UE)s of base station scheduling are planned to carry out data transmission in same sub-frame of uplink, now how is UE Perform CCA detectionsTo ensure that different UE can be while successfully detect, then while carrying out upstream data hair for up UL CCA Send.

It is also to need what is considered in addition, how to ensure to compete the fairness of unauthorized carrier wave between different UE, for example, If some UE always competes success, continuous several times complete data and sent, but some UE, and base station is repeatedly up for its transmission Authorization message, and these UE always fail (CCA detections find that channel is busy) due to UL CCA detections, it is impossible to according to base station scheduling It is required that to send upstream data, and base station side also always thinks that UE have sent upstream data according to scheduling requirement, also continue to hold Row receives the decode processing.Obviously, this process sends failure because UL CCA unsuccessfully result in data, and uplink authorization is wasted, Base station adds invalid complexity.How this problem should solve or suppress

It is also to need further clear and definite, current CCA form that UE, which performs the position of CCA detections and specific CCA form, It is very many, then any to be more suitable for UEWhen the scheduled multiplexings of especially multiple UE are in same sub-frame of uplink, how to make Multiple UE are obtained after CCA successes, busy channel is remained in that before data transmission, are one of the key points of UL CCA designs.

In correlation technique, only base station performs CCA scheme, and base station is different with UE data transmission feature, correlation technique In enter user equipment the general flows of data sent in corresponding subframe and be：User equipment (UE) first receives the up of base station transmission Authorization message, then go to perform CCA, if CCA, which is detected, successfully just sends data, data are not otherwise sent, and if UE sides are direct Using descending CCA method, then there is maximum probability CCA failures, cause the problem of LAAUL is difficult to data transfer.And Fairness problem when competing unauthorized carrier wave between multiple UE is also to need to be solved.

For the above-mentioned technical problem in correlation technique, effective solution is not yet proposed at present.

The content of the invention

The invention provides a kind of up CCA detection method and device, terminal, at least to solve in correlation technique when multiple When user equipment is scheduled in same subframe progress data transmission, it is different to ensure how user equipment performs CCA detections The problem of user equipment successfully carries out CCA detections.

According to an aspect of the invention, there is provided a kind of up CCA detection methods, including：It is determined that up for carrying out Clear channel assessment (CCA) CCA detection subframe period, wherein, at the end of the period punctum be not later than subframe be used for send Starting OFDM (the Orthogonal Frequency Division Multiplexing, abbreviation of upstream data OFDM) the beginning boundary of symbol；Punctum is no earlier than the starting OFDM symbol for sending upstream data at the beginning of period The beginning boundary of top n OFDM symbol；N is positive integer；Up clear channel assessment (CCA) CCA detections are carried out within the period.

Further, when N is 11 or 12, preceding 3 OFDM symbols in subframe are used to send downlink data；N be 8 or When 9, preceding 6 OFDM symbols in subframe are used to send downlink data；When N is 5 or 6, preceding 9 OFDM symbols in subframe are used In transmission downlink data；When N is 4 or 5, preceding 10 OFDM symbols or preceding 3 OFDM symbols in subframe are used to send descending Data；When N is 3 or 4, preceding 11 OFDM symbols in subframe are used to send downlink data；When N is 2 or 3, in subframe Preceding 12 OFDM symbols are used to send downlink data；When N is 1 or 2, one below OFDM symbol is used to send downlink data： Preceding 13 OFDM symbols in preceding 6 OFDM symbols, subframes in subframe.

Further, when preceding 13 OFDM symbols during N is 1, subframe are used to send downlink data, the in subframe the 14th Individual OFDM symbol is detected for up CCA.

Further, carried out within the period before up clear channel assessment (CCA) CCA detections, method also includes：According to upper Row CCA grade determines the duration of up CCA detections；Wherein, up CCA higher grade, it is determined that up CCA detection when It is longer；Up clear channel assessment (CCA) CCA detections are carried out within the period to be included：Indicated by the duration detected in up CCA Up CCA detections are carried out in time.

Further, up CCA grade is determined by least one of parameter：Number m, scheduling or the meter of 9 microseconds Draw the duration sent, CCA number；Wherein, CCA number up CCA detection before or before a period of time in, terminal perform Up CCA detections unsuccessfully cause the number of times that scheduled upstream data can not be sent；Wherein, it is described scheduling or plan send when A length of terminal sends the continuous sub-frame of uplink number of upstream data.

Further, determine that up CCA grade includes by dispatching or planning the duration sent：According to scheduling or plan The duration of transmission finds the grade of the corresponding up CCA of duration with dispatching or planning to send according to the first mapping relations, will be with The grade for the corresponding up CCA of duration that scheduling or plan are sent is defined as up CCA grade；Wherein, the first mapping relations For the mapping relations for the grade for dispatching or planning the duration and up CCA sent.

Further, in the case of multiple up CCAs corresponding with the duration that scheduling or plan are sent grade, according to tune The duration that degree or plan are sent found according to the first mapping relations the corresponding up CCA of duration with dispatching or plan transmission etc. After level, method also includes：According to the grade of service waiting for transmission or service quality QoS grade, from dispatching or planning what is sent Up CCA grade is determined in the corresponding multiple up CCA of duration grade.

Further, in the case of multiple up CCAs corresponding with the duration that scheduling or plan are sent grade, according to tune The duration that degree or plan are sent found according to the first mapping relations the corresponding up CCA of duration with dispatching or plan transmission etc. After level, method also includes：It is corresponding from the duration with dispatching or planning transmission according to the second mapping relations according to CCA number Up CCA grade is determined in multiple up CCA grade；Wherein, the second mapping relations are CCA number and up CCA's The mapping relations of grade.

Further, it is corresponding many from the duration with dispatching or planning transmission according to the second mapping relations according to CCA number Determine that up CCA grade includes in individual up CCA grade：When according to the second mapping relations multiple up CCA etc. In the case of finding CCA number in CCA number corresponding to level, on corresponding with CCA number in multiple up CCA grade Row CCA grade is defined as up CCA grade；In multiple up CCAs corresponding with the duration that scheduling or plan are sent grade In the case of, when not finding CCA number in CCA number corresponding to the grade according to the second mapping relations in multiple up CCA In the case of, using CCA number corresponding to the multiple up CCA up CCA of grade middle grade highest grade as thresholding, In the case where CCA number is less than thresholding, the grade for determining the elementary up CCA in multiple up CCA grade is Up CCA grade；In the case where CCA number is more than thresholding, determine in the grade highest in multiple up CCA grade Row CCA grade is up CCA grade.

Further, the first mapping relations include the sub- mapping relations of one below：First sub- mapping relations：Dispatching or counting Draw send when a length of 1 millisecond when, up CCA grade is 1 or 2；When scheduling or plan being sent a length of 2 milliseconds, on Row CCA grade is 3；When scheduling or plan being sent a length of 3 milliseconds, up CCA grade is 4；Dispatching or planning Transmission when a length of 4 milliseconds when, up CCA grade is 5；Dispatch or plan send when it is a length of be more than 4 milliseconds when, it is up CCA grade is 6；Second sub- mapping relations：When scheduling or plan being sent a length of 1 millisecond, up CCA grade is 1； When the duration for dispatching or planning transmission belongs to the scope shown in 2 milliseconds to 3 milliseconds, up CCA grade is 2；Scheduling or Plan send when a length of more than 4 milliseconds when, up CCA grade is 3.

Further, the second mapping relations include the sub- mapping relations of one below：3rd sub- mapping relations：In CCA number During more than 4 times, up CCA grade is 1；When CCA number is 4 times, up CCA grade is 2；It it is 3 times in CCA number When, up CCA grade is 3；When CCA number is 2 times, up CCA grade is 4；It is up when CCA number is 1 time CCA grade is 5；When CCA number is 0 time, up CCA grade is 6；4th sub- mapping relations：It is more than 2 in CCA number When secondary, up CCA grade is 1；When CCA number is 2 times, up CCA grade is 2；It is up when CCA number is 1 time CCA grade is 3；When CCA number is 0 time, up CCA grade is 4；5th sub- mapping relations：It is more than 1 in CCA number When secondary, up CCA grade is 1；When CCA number is 1 time, up CCA grade is 2；It is up when CCA number is 0 time CCA grade is 3.

Further, the value of the duration of up CCA detections includes at least one of：Up CCA detection when it is a length of 16 microseconds and m 9 microsecond sums, wherein, m is natural number；When a length of at least one of of up CCA detections：25 microseconds, 34 Microsecond, 43 microseconds, 52 microseconds, 61 microseconds, 70 microseconds；The duration of up CCA detections is made up of K fixed duration, wherein, it is fixed Duration is used for a CCA detection, a length of one below when fixed：16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds；K is positive integer.

Further, punctum is by the end of the period at the beginning of the time indicated by the duration of up CCA detections Between point subtract the time point that the duration of up CCA detection is obtained.

Further, the duration of up CCA detections is used for once up CCA detections.

Further, the duration detected in up CCA by the case that K fixed duration is constituted, up CCA detect when It is a length of to be used to carry out K up CCA detections duration used；Wherein, up CCA detection each time it is used when it is a length of fixed when It is long.

Further, K is determined by least one of：Receive the K that base station is pre-configured with；According to last up CCA Detect whether successfully to determine K；Wherein, in the case of upper once up CCA detections failure, K subtracts Q for last K values； Once in the case of up CCA detections successfully, K is last K values plus Q；Wherein, Q is integer.

Further, carried out within the time indicated by the duration that up CCA is detected after up CCA detections, method is also Including：After the duration for keeping channel idle reaches the duration of up CCA detection, upstream data is sent on sub-frame of uplink.

According to an aspect of the invention, there is provided a kind of up clear channel assessment (CCA) CCA detection means, including：First Determining module, for determining to be used to carry out the period of the subframe of up clear channel assessment (CCA) CCA detections, wherein, the period At the end of punctum be not later than subframe be used for send upstream data starting OFDM symbol beginning boundary；At the beginning of period Punctum is no earlier than the beginning boundary of the top n OFDM symbol of the starting OFDM symbol for sending upstream data；N is positive integer； Detection module, for carrying out up clear channel assessment (CCA) CCA detections within the period.

Further, device also includes：Second determining module, for determining that up CCA is detected according to up CCA grade Duration；Wherein, up CCA higher grade, it is determined that up CCA detection duration it is longer；Detection module, is additionally operable to upper Up CCA detections are carried out in time indicated by the duration of row CCA detections.

Further, the second determining module is additionally operable to determine up CCA grade by least one of parameter：9 is micro- Duration, CCA number that number m, scheduling or the plan of second is sent；Wherein, CCA number up CCA detection before or before In a period of time, terminal, which performs up CCA detections, unsuccessfully causes the number of times that scheduled upstream data can not be sent；Wherein, institute State and dispatch or plan the continuous sub-frame of uplink number that the when a length of terminal sent sends upstream data.

Further, the second determining module, is additionally operable to the duration sent according to scheduling or plan according to the first mapping relations Up CCA corresponding with the duration for dispatching or planning to send grade is found, will be corresponding with the duration for dispatching or planning transmission Up CCA grade is defined as up CCA grade；Wherein, the first mapping relations for scheduling or plan send duration with it is upper The mapping relations of row CCA grade.

Further, the second determining module is additionally operable to multiple up CCAs' corresponding with the duration that scheduling or plan are sent In the case of grade, according to the grade of service waiting for transmission or service quality QoS grade, from dispatching or planning the duration pair sent Up CCA grade is determined in the multiple up CCA answered grade.

Further, the second determining module is additionally operable to multiple up CCAs' corresponding with the duration that scheduling or plan are sent In the case of grade, according to CCA times number, according to the second mapping relations from dispatch or plan send duration it is corresponding it is multiple on Up CCA grade is determined in row CCA grade；Wherein, the second mapping relations are CCA number and up CCA grade Mapping relations.

Further, the second determining module is additionally operable to when right in multiple up CCA grade according to the second mapping relations In the case of finding CCA number in the CCA number answered, by up CCA corresponding with CCA number in multiple up CCA grade Grade be defined as up CCA grade；And in the grade with dispatching or planning the corresponding multiple up CCA of duration sent In the case of, when CCA number is not found in CCA number corresponding to the grade according to the second mapping relations in multiple up CCA In the case of, using CCA number corresponding to the multiple up CCA up CCA of grade middle grade highest grade as thresholding, CCA number is upper less than the elementary up CCA in the case of thresholding, determined in multiple up CCA grade grade Row CCA grade；In the case where CCA number is more than thresholding, determine that the grade highest in multiple up CCA grade is up CCA grade is up CCA grade.

Further, the duration of up CCA detections is used for once up CCA detections.

Further, the second determining module is additionally operable to determine K by least one of：Receive the K that base station is pre-configured with； Detected whether successfully to determine K according to last up CCA；Wherein, in the case of upper once up CCA detections failure, K is Last K values subtract Q；In the case of once up CCA detections successfully, K is last K values plus Q；Wherein, Q is integer.

Further, device also includes：Sending module, for keeping the duration of channel idle to reach up CCA detections Duration after, upstream data is sent on sub-frame of uplink.

According to an aspect of the invention, there is provided a kind of terminal, including above-mentioned device.

By the present invention, using the period for determining progress CCA detections so that punctum is not later than at the end of the period The beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe, punctum is no earlier than for sending out at the beginning of the period The beginning boundary of the top n OFDM symbol of the starting OFDM symbol of upstream data is sent, even if proper multiple user equipmenies are scheduled Multiplexing can carry out CCA detections in same subframe within the period of the setting, and then multiple user equipmenies can be into Work(carries out CCA detections, solves in correlation technique when multiple user equipmenies, which are scheduled in same subframe, carries out data transmission, How user equipment performs CCA detections to ensure the problem of different user equipmenies successfully carry out CCA detections.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the flow chart of up CCA detection methods according to embodiments of the present invention；

Fig. 2 is the structured flowchart one of up clear channel assessment (CCA) CCA detection means according to embodiments of the present invention；

Fig. 3 is the structured flowchart two of up clear channel assessment (CCA) CCA detection means according to embodiments of the present invention.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.

A kind of up CCA detection methods are provided in the present embodiment, and Fig. 1 is up CCA according to embodiments of the present invention The flow chart of detection method, as shown in figure 1, the flow comprises the following steps：

Step S102, it is determined that the period of the subframe for carrying out up clear channel assessment (CCA) CCA detections, wherein, the time Punctum is not later than the beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe at the end of section；Period opens Beginning moment point is no earlier than the beginning boundary of the top n OFDM symbol of the starting OFDM symbol for sending upstream data；N is just whole Number；

Step S104, carries out up clear channel assessment (CCA) CCA detections within the period.

By above-mentioned steps, using the period for determining progress CCA detections so that punctum is not late at the end of the period In the beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe, punctum, which is no earlier than, at the beginning of the period is used for The beginning boundary of the top n OFDM symbol of the starting OFDM symbol of upstream data is sent, even if proper multiple user equipmenies are adjusted Degree multiplexing can carry out CCA detections in same subframe within the period of the setting, and then multiple user equipmenies can Success carries out CCA detections, solves in correlation technique when multiple user equipmenies are scheduled in same subframe progress data transmission When, how user equipment performs CCA detections to ensure the problem of different user equipmenies successfully carry out CCA detections.

It should be noted that above-mentioned subframe can be sub-frame of uplink or special subframe, but it is not limited to this.On State upstream data can include Physical Uplink Shared Channel (Physical uplink shared channel, referred to as PUSCH), Physical Random Access Channel (Physical Random Access Channel, abbreviation PRACH), physical uplink control One in channel (Physical Uplink Control Channel, abbreviation PUCCH) processed, uplink signal-channel quality measurement SRS Or it is multiple, but it is not limited to this.

It should be noted that when N is 11 or 12, preceding 3 OFDM symbols in subframe are used to send downlink data, or son Preceding 3 OFDM symbols in frame are used to sending downlink data, the 1st symbol knot of the 4th symbol of subframe to next subframe Shu Zuowei CCA detection times section；When N is 8 or 9, preceding 6 OFDM symbols in subframe are used to send in downlink data or subframe Preceding 6 OFDM symbols be used to send downlink data, the 7th symbol to the 1st sign-off of next subframe of subframe is made For CCA detection times section；When N is 5 or 6, preceding 9 OFDM symbols in subframe are used for before sending in downlink data or subframe 9 OFDM symbols are used to sending downlink data, the 1st sign-off conduct of the 10th symbol of subframe to next subframe CCA detection times section；When N is 4 or 5, preceding 10 OFDM symbols or preceding 3 OFDM symbols in subframe are used to send lower line number According to；When N is 3 or 4, preceding 11 OFDM symbols in subframe are used to send downlink data；When N is 2 or 3, in subframe before 12 OFDM symbols are used to send downlink data；When N is 1 or 2, one below OFDM symbol is used to send downlink data：Son Preceding 13 OFDM symbols in preceding 6 OFDM symbols, subframes in frame.

Specifically, when preceding 13 OFDM symbols during N is 1, subframe are used to send downlink data, the 14th in subframe OFDM symbol is detected for up CCA.

It should be noted that can be used for sending upstream data for which OFDM symbol, which OFDM symbol can be used In sending downlink data, which OFDM symbol can be used for carrying out CCA detections, according to the starting OFDM for sending upstream data Symbol different and different are, it is necessary to which explanation, the starting OFDM symbol for sending upstream data can be set in advance. Illustrated so that N is 11 as an example, when upstream data primary sign is the 8th or the 1st, there may be following mode：With In send the starting OFDM symbol of upstream data for subframe the 8th symbol (corresponding symbol 7, the numbering of subframe internal symbol from 0~ 13) when, preceding 3 OFDM symbols of the subframe be used to send in downlink data, the 4th to the 7th OFDM sometime point can It can be used for carrying out CCA inspections using the OFDM symbol of the start time point as the above-mentioned period, i.e., the 4th to the 7th OFDM symbol Survey, the 8th OFDM symbol to the 14th OFDM can be used for sending upstream data；In the starting OFDM for sending upstream data When symbol is the 1st OFDM symbol of subframe, preceding 3 OFDM symbols in the subframe are used to send downlink data, in the subframe Sometime point of the 4th symbol into the 14th symbol can as the above-mentioned period start time point, i.e. the son The 4th OFDM symbol to the 14th OFDM symbol in frame can be used for carrying out CCA detections.Upstream data is from the next of the subframe 1st sign-on of individual subframe is sent.

When N is 12, a kind of embodiment of correspondence, that is, corresponding to allows upstream data to be sent from the 2nd sign-on.When Preceding 3 symbols of preceding subframe are used to send downlink data, the 1st symbol of the 4th symbol of present sub-frame to next subframe In the start time point sometime put as the above-mentioned period.2nd symbol of the upstream data from next subframe Start to send.

In one embodiment of the invention, before step S104, the above method can also include：According to up CCA Grade determine the duration of up CCA detection；Wherein, up CCA higher grade, it is determined that up CCA detection duration get over It is long.Above-mentioned steps S104 can be shown as：Up CCA detections are carried out in the time indicated by duration detected in up CCA.

It should be noted that up CCA grade can be determined by least one of parameter：The number m of 9 microseconds, Duration, CCA number that scheduling or plan are sent；Wherein, CCA number up CCA detection before or before a period of time in, Terminal, which performs up CCA detections, unsuccessfully causes the number of times that scheduled upstream data can not be sent；Wherein, the scheduling or plan When a length of terminal of transmission sends the continuous sub-frame of uplink number of upstream data.

It should be noted that the continuous sub-frame of uplink number that above-mentioned terminal sends upstream data can be that terminal is informed in base station , such as base station to terminal when sending schedule information, while inform that terminal sends data on which sub-frame of uplink, and these Continuous sub-frame of uplink number is the continuous sub-frame of uplink number that above-mentioned terminal sends upstream data in sub-frame of uplink.

Up CCA grade can be determined by dispatching or planning one parameter of duration sent, can also lead to Cross the duration combination other specification of scheduling or plan transmission to determine up CCA grade, for the former, can specifically show For：Found according to the duration that scheduling or plan are sent according to the first mapping relations on corresponding with the duration for dispatching or planning to send Row CCA grade, up CCA corresponding with the duration for dispatching or planning transmission grade is defined as up CCA grade；Its In, duration and the mapping relations of up CCA grade that the first mapping relations send for scheduling or plan.Can be with table for the latter It is now following form, but is not limited to this：In the situation of multiple up CCAs corresponding with the duration that scheduling or plan are sent grade Under, found according to the duration that scheduling or plan are sent according to the first mapping relations on corresponding with the duration for dispatching or planning to send After row CCA grade, further according to the grade of service waiting for transmission or service quality QoS grade, from dispatching or planning what is sent Up CCA grade is determined in the corresponding multiple up CCA of duration grade.Or, with dispatching or planning the duration sent In the case of the multiple up CCA of correspondence grade, the duration sent according to scheduling or plan according to the first mapping relations find with It is several according to CCA time after the grade for the corresponding up CCA of duration that scheduling or plan are sent, according to the second mapping relations from Up CCA grade is determined in the grade for the corresponding multiple up CCA of duration that scheduling or plan are sent；Wherein, second reflects It is CCA number and the mapping relations of up CCA grade to penetrate relation.

According to CCA number, according to the second mapping relations from dispatching or planning the corresponding multiple up CCA of duration sent Grade in determine that up CCA grade can be shown as：When according to the second mapping relations multiple up CCA grade institute , will be corresponding up with CCA number in multiple up CCA grade in the case of finding CCA number in corresponding CCA number CCA grade is defined as up CCA grade；In the grade with dispatching or planning the corresponding multiple up CCA of duration sent In the case of, when CCA number is not found in CCA number corresponding to the grade according to the second mapping relations in multiple up CCA In the case of, using CCA number corresponding to the multiple up CCA up CCA of grade middle grade highest grade as thresholding, CCA number is upper less than the elementary up CCA in the case of thresholding, determined in multiple up CCA grade grade Row CCA grade；In the case where CCA number is more than thresholding, determine that the grade highest in multiple up CCA grade is up CCA grade is up CCA grade.

The duration sent for dispatching or planning combines 9 microseconds and determines the scheme of up CCA grade, can be first by Up CCA grade is determined according to above-mentioned first mapping relations, then further according to the number and up CCA grade of 9 microseconds Mapping relations further determine that up CCA grade, are no longer described in detail herein.In addition, it is necessary to explanation, can also be independent Up CCA grade is determined according to above-mentioned second mapping relations according to CCA number of times, can also be pressed in the number of times according to CCA After grade according to above-mentioned second mapping relations to determine up CCA, further according to number and the up CCA grade of 9 microseconds Mapping relations further determine that up CCA grade；Certainly individually according to the numbers of 9 microseconds according to 9 microseconds number with it is up The mapping relations of CCA grade can also determine that up CCA grade, or three parameters are combined with each other to determine above-mentioned CCA Grade.

Above-mentioned first mapping relations can include the sub- mapping relations of one below, but be not limited to this：First son mapping is closed System：When scheduling or plan being sent a length of 1 millisecond, up CCA grade is 1 or 2；Dispatching or planning the duration of transmission For 2 milliseconds when, up CCA grade is 3；When scheduling or plan being sent a length of 3 milliseconds, up CCA grade is 4； When scheduling or plan being sent a length of 4 milliseconds, up CCA grade is 5；It is a length of when scheduling or plan are sent to be more than At 4 milliseconds, up CCA grade is 6；Second sub- mapping relations：It is up when when scheduling or plan being sent a length of 1 millisecond CCA grade is 1；When the duration for dispatching or planning transmission belongs to the scope shown in 2 milliseconds to 3 milliseconds, up CCA grade For 2；When scheduling or plan being sent a length of more than 4 milliseconds, up CCA grade is 3.

Above-mentioned second mapping relations can include the sub- mapping relations of one below, but be not limited to this：3rd son mapping is closed System：When CCA number is more than 4 times, up CCA grade is 1；When CCA number is 4 times, up CCA grade is 2； When CCA number is 3 times, up CCA grade is 3；When CCA number is 2 times, up CCA grade is 4；It is in CCA number At 1 time, up CCA grade is 5；When CCA number is 0 time, up CCA grade is 6；4th sub- mapping relations：In CCA When number of times is more than 2 times, up CCA grade is 1；When CCA number is 2 times, up CCA grade is 2；It is 1 in CCA number When secondary, up CCA grade is 3；When CCA number is 0 time, up CCA grade is 4；5th sub- mapping relations：In CCA When number of times is more than 1 time, up CCA grade is 1；When CCA number is 1 time, up CCA grade is 2；It is 0 in CCA number When secondary, up CCA grade is 3.

It should be noted that the value of up CCA grade is smaller, up CCA higher grade.

In embodiments of the present invention, the value of the duration of up CCA detections includes at least one of：Up CCA detections When a length of 16 microsecond and m 9 microsecond sums, wherein, m is natural number；When a length of at least one of of up CCA detections： 25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds, 70 microseconds；The duration of up CCA detections is made up of K fixed duration, Wherein, fixed duration is used for a CCA detection, a length of one below when fixed：16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds；K For positive integer.

In embodiments of the present invention, punctum is by the period at the beginning of the time indicated by the duration of up CCA detections End time point subtract the time point that the duration of up CCA detection is obtained.I.e. by indicated by the duration that detects up CCA The finish time point of time fix, i.e., when multiple users carry out CCA detections, it is ensured that the CCA detections of multiple user equipmenies At the end of punctum it is identical, and then avoid different user because interfering between user caused by the non-fairness of competition is asked Topic.

It should be noted that the duration of above-mentioned up CCA detections can be used for once up CCA detections, it can be used for Repeatedly up CCA detection, such as in the duration that up CCA is detected by the case that K fixed duration is constituted, up CCA is detected When a length of be used to carry out the duration used in K up CCA detection；Wherein, up CCA detection each time it is used when it is a length of solid Timing is long.

It should be noted that above-mentioned K can be determined by least one of mode：Receive the K that base station is pre-configured with；Root Detect whether successfully to determine K according to last up CCA；Wherein, in the case of upper once up CCA detections failure, K is upper K values once subtract Q；In the case of once up CCA detections successfully, K is last K values plus Q；Wherein, Q is positive integer.

It should be noted that above-mentioned K values are big, then the duration of up CCA detections will be longer, then corresponding CCA Grade will be higher.

In one embodiment of the invention, after above-mentioned steps S104, the above method can also include：Keeping channel Idle duration is reached after the duration of up CCA detections, and upstream data is sent on sub-frame of uplink.I.e. in multiple user equipmenies After CCA is detected successfully, before upstream data transmission, still busy channel is kept.

It should be noted that up CCA grade can be obtained in the following manner：Mode one, UE is sent out according to base station The sub-frame number of the descending scheduling sent, performing CCA according to nearest UE in conjunction with UE unsuccessfully causes the number of times of uplink failure (i.e. CCA times number) determines the up UL CCA of UE priority or the duration of execution；Mode two, UE receives the UL that base station is sent CCA grades, optionally, the CCA frequency of failures that UE is counted in conjunction with UE, according to the rule of agreement further adjustment UL CCA etc. Level；Mode three, base station is according to grade or the execution that the sub-frame number and the CCA frequency of failures of many subframe schedulings are that UE configures UL CCA Duration；Wherein, the CCA frequency of failures are that UE reports base station, or base station statistics is obtained.Wherein, UE by special RRC message or Upload control indicates that (UCI) reports the CCA frequency of failures；Specifically, statistics acquisition in base station can be embodied in：Base station is in scheduling UE is sent to be attempted to receive the data that UE is sent in the subframe of upstream data, if whether base station not can determine that UE due to CCA failures When not sending upstream data, base station is considered the up CCA failures of UE if decoding error.

By the above method, following benefits can be obtained：Accurate time domain, which is provided, for UE execution UL CCA performs interval, if UL CCA grades and length are put, different UE can be adjusted because the channel probability unfairness of seizing that neighbouring channel circumstance is brought is asked Topic.

For a better understanding of the present invention, the present invention is further explained below in conjunction with preferred embodiment.

Embodiment 1

Up CCA grade and following relating to parameters is set：The sub-frame number of many subframe schedulings.

Specifically, base station scheduling UE or UE independently determines to continuously transmit more than one subframe that (subframe is 1ms, duration Can be exchanged with number of sub frames) when, now UE just belongs to sends data using the mechanism of many subframe schedulings, wherein the son continuously dispatched Frame number may be 2,3,4 etc., it is contemplated that under actual conditions, and the maximum subframe taken of transmission is up to 10ms (under this is LAA every time It is 13ms in capable requirement, area control).

If it is 1 subframe that UE, which sends number of sub frames, UE sends channel at least free time 25us before data.

If UE is configured many subframe schedulings, such as continuous 3 subframes, but UE is performing CCA detections for preceding 2 subframes When, channel is busy, during for last subframe, and UE is also channel at least free time 25us before transmitting data.

Td duration refers to defined in LTE protocol 36.213vd00.Td is made up of 16us and m 9us.

Base station sets CCA to detect duration and corresponding transmission duration according to table 1 or table 2 or table 3.Higher grade, corresponding CCA detection durations are shorter, and the duration of transmission is shorter.Use for window length may be referred to for descending PDSCH believe in the prior art The use of the window length of random competition window in the CCA detections that road sends and performed, its application method and method of the prior art It is identical.CCA standards are single CCA, or the CCA with contention window.

Table 1

Table 2

Table 3

Described below by taking table 1 as an example：

When UE plans or sent by base station scheduling during a length of 1ms, UE can select execution grade to be 1 or 2 CCA etc. Level.The duration that grade 1 is detected is most short, so the other business of correspondence limit priority, next to that grade 2.That is, for meter When drawing a length of 1ms when sending, UE also needs to combine the grade of service waiting for transmission or QoS grades further determine that selection grade 1 also It is 2.For example be when UE sends PRACH sequences, can be with service rating 1.Can be with service rating 2 during transmission PUCCH.

When UE plans or sent by base station scheduling during a length of 2ms, the grade 3 that now UE is performed.Specially：UE is first held Row channel idle 25us, randomly generates the N values successively decreased afterwards, and (3 come from { 3,4 }, corresponding grade 3 for 0~3 for N span In, N minimum span, other grades), or 0~4 (4 come from { 3,4 }, in corresponding grade 3, N maximum Span, other grades the like).N rule of successively decreasing may be referred to LTE protocol 36.213vd00.

N maximum occurrences scope, which produces N values progress CCA and is detected as obtaining unauthorized carrier wave, in using a certain grade uses Temporary, if continuous K1 times can not all succeed, N values is produced using the minimum span of N in the grade and carry out CCA detections. It is preferred that, K1 spans are { 1,2 ..., 8 }.

If being produced N values progress CCA using the minimum span of N in a certain grade and be detected as obtaining unauthorized carrier wave makes With temporary, if continuous K2 times can not all succeed, produce N values using the maximum occurrences scope of N in a upper grade and carry out CCA Detection.It is preferred that, K2 spans are { 2,3 ..., 8 }.

Embodiment 2

Setting CCA grades to perform CCA failures (not finding channel idle) according to UE causes scheduled data to send failure Number of times (being designated as CCA number).

Table 4, table 5 and table 6 give the setting with rank correlation.Illustrate how to use by taking form 4 as an example below.

When the CCA mechanism that equipment is continuously configured using base station or the CCA mechanism or grade chosen according to treaty rule, enter During row Channel Detection, the result of CCA detections：If multiple CCA detections continuously occur finds that channel is busy, equipment can not Scheduled data are sent, then equipment is according to the CCA frequency of failures in table 1, the mechanism or grade of selection CCA detections next time.

Table 4

Table 5

Table 6

Embodiment 3

CCA grades are set according to following table 7, table 8 or table 9.Specifically using as follows, illustrated by taking table 7 as an example.

The duration and CCA number that base station is sent according to scheduling or plan determine CCA grades.Higher grade, corresponding CCA Detect that duration is shorter, the duration of transmission is shorter.Wherein dispatch or plan higher than the CCA times number of duration priority sent.

For example when dispatch send when a length of 1ms when, now corresponding grade 1,2, equipment is further selected according to CCA number again Select, select grade 1 if CCA number of equipment is more than 4, otherwise select grade 2.

Table 7

Table 8

Table 9

In table 9 when equipment scheduling is sent during a length of 2ms~3ms, now candidate's grade has 2,3, and equipment is added now CCA number is 1, is not 2 or 3, such case, is division thresholding according to the CCA number of higher ranked person, for example now according to The CCA number 3 of grade 2 divides thresholding, because the actual CCA number of equipment is 1, less than thresholding 3, then equipment selection is more low Level, is now grade 3.If the actual CCA number of equipment is 3, then more than or equal to thresholding 3, then equipment selects higher level, It is now grade 2.

Embodiment 4

The behavior of CCA grades is obtained including several UE.

The duration that A, base station are sent according to the scheduling for UE, which is tabled look-up, to be selected corresponding CCA grades and notifies UE, uses RRC The corresponding DCI of uplink authorization in message or Downlink Control Information is notified.

The duration that B, base station are sent according to the scheduling for UE, and CCA number of UE feedbacks (can also be CCA failures Information, then base station is accumulative and value) the corresponding CCA grades of selection of tabling look-up and notify UE, use RRC information or descending control letter The corresponding DCI of uplink authorization in breath is notified.

It is UE that C, base station, which send uplink authorization information, and notifies that the sub-frame number that UE is continuously dispatched (can be simultaneously up Included in authorization message), then UE passes through the corresponding CCA grades of selection of tabling look-up.

D, base station send uplink authorization information for UE, and the sub-frame number for notifying UE continuously to dispatch, and UE is combining system recently CCA number of meter, is passing through the corresponding CCA grades of selection of tabling look-up.

E, base station send uplink authorization information and are tabled look-up according to the CCA number counted recently to UE, UE and select corresponding CCA etc. Level.

The CCA number that F, base station are fed back according to UE, which is tabled look-up, selects corresponding CCA grades, and the CCA grades for notifying UE to perform.

Embodiment 5

In unauthorized carrier wave, in the occupancy phase each time, if including descending sub frame and during sub-frame of uplink, then especially When the descending sub frame of last in descending sub frame is part subframe, then PUSCH, PUCCH, PRACH or SRS's rises in the subframe Beginning symbol (below by taking PUSCH as an example) is：

When last described descending subframe takes symbol 0,1,2, PUSCH is opened from symbol 4 (symbol number is 0~13) Begin, it is allowed to send PUSCH.Optimal, PUSCH is sent since symbol 7.Although so wasting partial symbols resource, It is smaller based on existing LTE system modification amount.And in this case, it is allowed to which SRS is sent since symbol 4, and SRS preferably can To send one or more symbols, when only sending a symbol, close to the previous symbol of PUSCH primary signs.Allow to send During multiple symbols, corresponding symbolic number is calculated forward close to PUSCH primary signs.

When last described descending subframe takes symbol 0,1,2,3,4,5, PUSCH is since symbol 7, it is allowed to send PUSCH.If sending SRS simultaneously, optimal, SRS is located at symbol 7, and remaining symbol sends PUSCH and/or PUCCH.Or SRS is located at symbol 13, and remaining symbol sends PUSCH and/or PUCCH.

When described descending last subframe takes symbol 0,1,2,3,4,5,6,7,8, PUSCH since symbol 10, Allow to send PUSCH.Optimal if sending SRS simultaneously, SRS is located at symbol 10, remaining symbol send PUSCH and/or PUCCH.Or SRS is located at symbol 13, remaining symbol sends PUSCH and/or PUCCH.

When last described descending subframe takes symbol 0,1,2,3,4,5,6,7,8,9, PUSCH is opened from symbol 11 Begin, it is allowed to send PUSCH.Optimal if sending SRS simultaneously, SRS is located at symbol 11, remaining symbol send PUSCH and/ Or PUCCH.Or SRS is located at symbol 13, remaining symbol sends PUSCH and/or PUCCH.

When described descending last subframe takes symbol 0,1,2,3,4,5,6,7,8,9,10, PUSCH is from symbol 12 Start, it is allowed to send PUSCH.If sending SRS simultaneously, optimal, SRS is located at symbol 12, and remaining symbol sends PUSCH And/or PUCCH.Or SRS is located at symbol 13, remaining symbol sends PUSCH and/or PUCCH.Or, SRS is since symbol 12 Send, and all symbols (symbol 12,13) are sent for SRS.

When last described descending subframe takes symbol 0,1,2,3,4,5,6,7,8,9,10,11, SRS takes symbol 13 start to send.

Above-described embodiment provides accurate time domain for UE execution UL CCA and performs interval, sets UL CCA grades and length, Different UE can be adjusted and seize the unfair problem of channel probability due to what neighbouring channel circumstance was brought.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Understood based on such, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are to cause a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each of the invention embodiment.

A kind of up clear channel assessment (CCA) CCA detection means is additionally provided in the present embodiment, and the device is used to realize Embodiment and preferred embodiment are stated, repeating no more for explanation had been carried out.As used below, term " module " can be with Realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples preferably comes real with software It is existing, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.

Fig. 2 is the structured flowchart one of up clear channel assessment (CCA) CCA detection means according to embodiments of the present invention, such as Fig. 2 Shown, the device includes：

First determining module 20, for determining to be used to carry out the period of the subframe of up clear channel assessment (CCA) CCA detections, Wherein, punctum is not later than the beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe at the end of the period； Punctum is no earlier than an initial line for the top n OFDM symbol of the starting OFDM symbol for sending upstream data at the beginning of period Boundary；N is positive integer；

Detection module 22, is connected with above-mentioned first determining module 20, is commented for carrying out up idle channel within the period Estimate CCA detections.

By said apparatus, using the period for determining progress CCA detections so that punctum is not late at the end of the period In the beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe, punctum, which is no earlier than, at the beginning of the period is used for The beginning boundary of the top n OFDM symbol of the starting OFDM symbol of upstream data is sent, even if proper multiple user equipmenies are adjusted Degree multiplexing can carry out CCA detections in same subframe within the period of the setting, and then multiple user equipmenies can Success carries out CCA detections, solves in correlation technique when multiple user equipmenies are scheduled in same subframe progress data transmission When, how user equipment performs CCA detections to ensure the problem of different user equipmenies successfully carry out CCA detections.

It should be noted that above-mentioned subframe can be sub-frame of uplink or special subframe, but it is not limited to this.On Physical Uplink Shared Channel PUSCH, Physical Random Access Channel PRACH, physical uplink control letter can be included by stating upstream data One or more of road PUCCH, uplink SRS, but it is not limited to this.

Fig. 3 is the structured flowchart two of up clear channel assessment (CCA) CCA detection means according to embodiments of the present invention, such as Fig. 3 Shown, said apparatus can also include：Second determining module 30, is connected with above-mentioned detection module 22, for according to up CCA's Grade determines the duration of up CCA detections；Wherein, up CCA higher grade, it is determined that up CCA detection duration it is longer. Above-mentioned detection module 22, can be also used for carrying out up CCA detections in the time indicated by the duration in up CCA detections.

Above-mentioned second determining module 30 can be also used for determining up CCA grade by least one of parameter：9 is micro- Duration, CCA number that number m, scheduling or the plan of second is sent；Wherein, CCA number up CCA detection before or before In a period of time, terminal, which performs up CCA detections, unsuccessfully causes the number of times that scheduled upstream data can not be sent；Wherein, institute State scheduling or when plan is sent it is a length of, wherein, the when a length of terminal that the scheduling or plan are sent sends the company of upstream data Continuous sub-frame of uplink number.

It should be noted that above-mentioned second determining module 30, is additionally operable to the when long-press that can be sent according to scheduling or plan Up CCA corresponding with the duration for dispatching or planning to send grade is found according to the first mapping relations, will be sent out with dispatching or planning The corresponding up CCA of duration sent grade is defined as up CCA grade；Wherein, the first mapping relations is scheduling or plan The duration of transmission and the mapping relations of up CCA grade.Further, above-mentioned second determining module 30 be additionally operable to scheduling Or in the case of the multiple up CCA of duration correspondence of plan transmission grade, according to the grade of service waiting for transmission or service quality QoS grades, determine up CCA grade from multiple up CCA corresponding with the duration that scheduling or plan are sent grade.

In embodiments of the present invention, above-mentioned second determining module 30 can be also used for dispatching or planning the duration sent In the case of the multiple up CCA of correspondence grade, according to CCA number, sent according to the second mapping relations from dispatching or planning The corresponding multiple up CCA of duration grade in determine up CCA grade；Wherein, the second mapping relations are CCA number With the mapping relations of up CCA grade.

Above-mentioned second determining module 30 can be also used for when right in multiple up CCA grade according to the second mapping relations In the case of finding CCA number in the CCA number answered, by up CCA corresponding with CCA number in multiple up CCA grade Grade be defined as up CCA grade；And in the grade with dispatching or planning the corresponding multiple up CCA of duration sent In the case of, when CCA number is not found in CCA number corresponding to the grade according to the second mapping relations in multiple up CCA In the case of, using CCA number corresponding to the multiple up CCA up CCA of grade middle grade highest grade as thresholding, CCA number is upper less than the elementary up CCA in the case of thresholding, determined in multiple up CCA grade grade Row CCA grade；In the case where CCA number is more than thresholding, determine that the grade highest in multiple up CCA grade is up CCA grade is up CCA grade.

It should be noted that above-mentioned second determining module 30 can also be first up to determine according to above-mentioned first mapping relations CCA grade, then the mapping relations further according to number and the up CCA of 9 microseconds grade further determine that up CCA etc. Level, is no longer described in detail herein.In addition, it is necessary to explanation, can also be individually according to CCA number of times according to the above-mentioned second mapping Relation determines up CCA grade, can also be up to determine according to above-mentioned second mapping relations in the number of times according to CCA After CCA grade, further according to number and the up CCA of 9 microseconds grade mapping relations further determine that up CCA etc. Level；Certainly the mapping relations individually according to the number of 9 microseconds according to the number and up CCA grade of 9 microseconds can also be determined Up CCA grade, or three parameters are combined with each other to determine above-mentioned CCA grade.

In embodiments of the present invention, above-mentioned second determining module 30 can be also used for determining K by least one of：Connect Receive the K that base station is pre-configured with；Detected whether successfully to determine K according to last up CCA；Wherein, in upper once up CCA inspections In the case that dendrometry loses, K subtracts Q for last K values；In the case of once up CCA detections successfully, K is last K values Plus Q；Wherein, Q is positive integer.

In one embodiment of the invention, said apparatus can also include：Sending module, for keeping channel idle Duration reach the duration of up CCA detection after, upstream data is sent on sub-frame of uplink.I.e. in multiple user equipment CCA After detecting successfully, before upstream data transmission, still busy channel is kept.

The mode of grade for obtaining up CCA may be referred to the specific descriptions of above method embodiment, herein no longer Repeat.

It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located at many respectively In individual processor.

A kind of terminal, including the up clear channel assessment (CCA) CCA inspections shown in Fig. 2 or Fig. 3 are additionally provided in the present embodiment Survey device.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing following steps to be arranged to storage to be used for：

S1, it is determined that the period of the subframe for carrying out up clear channel assessment (CCA) CCA detections, wherein, the knot of period Beam moment point is not later than the beginning boundary for being used to send the starting OFDM symbol of upstream data of subframe；Carved at the beginning of period Point is no earlier than the beginning boundary of the top n OFDM symbol of the starting OFDM symbol for sending upstream data；N is positive integer；

S2, carries out up clear channel assessment (CCA) CCA detections within the period.

Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. is various can be with the medium of store program codes.

Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

1. a kind of up clear channel assessment (CCA) CCA detection methods, it is characterised in that including：

It is determined that the period of the subframe for carrying out up clear channel assessment (CCA) CCA detections, wherein, at the end of the period Punctum is not later than the beginning boundary of the starting orthogonal frequency division multiplex OFDM symbol for being used to send upstream data of the subframe；It is described Punctum is no earlier than the top n OFDM symbol of the starting OFDM symbol for sending the upstream data at the beginning of period Beginning boundary；N is positive integer；

Up clear channel assessment (CCA) CCA detections are carried out within the period.

2. according to the method described in claim 1, it is characterised in that

When N is 11 or 12, preceding 3 OFDM symbols in the subframe are used to send downlink data；

When N is 8 or 9, preceding 6 OFDM symbols in the subframe are used to send downlink data；

When N is 5 or 6, preceding 9 OFDM symbols in the subframe are used to send downlink data；

When N is 4 or 5, preceding 10 OFDM symbols or preceding 3 OFDM symbols in the subframe are used to send downlink data；

When N is 3 or 4, preceding 11 OFDM symbols in the subframe are used to send downlink data；

When N is 2 or 3, preceding 12 OFDM symbols in the subframe are used to send downlink data；

When N is 1 or 2, one below OFDM symbol is used to send downlink data：Preceding 6 OFDM symbols in the subframe, institute State preceding 13 OFDM symbols in subframe.

3. method according to claim 2, it is characterised in that preceding 13 OFDM symbols in N is 1, the subframe are used When downlink data is sent, the 14th OFDM symbol in the subframe is used for the up CCA detections.

4. according to the method described in claim 1, it is characterised in that up clear channel assessment (CCA) is carried out within the period Before CCA detections, methods described also includes：The duration that up CCA is detected is determined according to up CCA grade；Wherein, on described Row CCA higher grade, it is determined that the up CCA detection duration it is longer；

Up clear channel assessment (CCA) CCA detections are carried out within the period to be included：It is signified in the duration of the up CCA detections Up CCA detections are carried out in the time shown.

5. method according to claim 4, it is characterised in that the up CCA is determined by least one of parameter Grade：Duration, CCA number that number m, scheduling or the plan of 9 microseconds are sent；Wherein, the CCA number is described up Before CCA detections or in a period of time before, terminal, which performs up CCA detections, unsuccessfully causes scheduled upstream data can not The number of times of transmission；Wherein, when a length of terminal that the scheduling or plan are sent sends the continuous sub-frame of uplink number of upstream data.

6. method according to claim 5, it is characterised in that the duration sent by the scheduling or plan determines described Up CCA grade includes：

According to it is described scheduling or plan send duration according to the first mapping relations find with it is described scheduling or plan send when Long corresponding up CCA grade, the grade of the up CCA corresponding with the scheduling or plan are sent duration is determined For the grade of the up CCA；Duration and the up CCA that wherein, first mapping relations send for scheduling or plan etc. The mapping relations of level.

7. method according to claim 6, it is characterised in that corresponding multiple in the duration sent with the scheduling or plan In the case of up CCA grade, according to it is described scheduling or plan send duration according to the first mapping relations find with it is described After the grade for the corresponding up CCA of duration that scheduling or plan are sent, methods described also includes：

According to the grade of service waiting for transmission or service quality QoS grade, from corresponding with the duration that the scheduling or plan are sent The grade of the up CCA is determined in multiple up CCA grade.

8. method according to claim 6, it is characterised in that corresponding multiple in the duration sent with the scheduling or plan In the case of up CCA grade, according to it is described scheduling or plan send duration according to the first mapping relations find with it is described After the grade for the corresponding up CCA of duration that scheduling or plan are sent, methods described also includes：

It is corresponding many from the duration sent with the scheduling or plan according to the second mapping relations according to the CCA number The grade of the up CCA is determined in individual up CCA grade；

Wherein, second mapping relations are CCA number and the mapping relations of up CCA grade.

9. method according to claim 8, it is characterised in that according to the CCA number, according to the second mapping relations from institute The grade of the up CCA is determined in the grade for stating multiple up CCA corresponding with the duration that the scheduling or plan are sent Including：

When finding the CCA in CCA number corresponding to the grade according to second mapping relations in the multiple up CCA In the case of number of times, the grade of up CCA corresponding with the CCA number in the multiple up CCA grade is defined as The grade of the up CCA；

In the case of multiple up CCAs corresponding with the duration that the scheduling or plan are sent grade, when according to described second , will in the case of not finding the CCA number in CCA number corresponding to grade of the mapping relations in the multiple up CCA CCA number corresponding to the multiple up CCA up CCA of grade middle grade highest grade is as thresholding, described CCA number is less than the elementary up CCA's in the case of the thresholding, determined in the multiple up CCA grade Grade is the grade of the up CCA；In the case where the CCA number is more than the thresholding, the multiple up CCA is determined Grade in the up CCA of grade highest grade be the up CCA grade.

10. the method according to any one of claim 6 to 9, it is characterised in that first mapping relations include following One of sub- mapping relations：

First sub- mapping relations：The scheduling or plan send when a length of 1 millisecond when, the grade of the up CCA for 1 or 2；When the scheduling or plan being sent a length of 2 milliseconds, the grade of the up CCA is 3；In the scheduling or plan hair Send when a length of 3 milliseconds when, the grade of the up CCA is 4；When the scheduling or plan being sent a length of 4 milliseconds, institute The grade for stating up CCA is 5；It is described scheduling or plan send when it is a length of be more than 4 milliseconds when, the grade of the up CCA For 6；

Second sub- mapping relations：When the scheduling or plan being sent a length of 1 millisecond, the grade of the up CCA is 1； When the duration sent in the scheduling or plan belongs to the scope shown in 2 milliseconds to 3 milliseconds, the grade of the up CCA is 2； When the scheduling or plan being sent a length of more than 4 milliseconds, the grade of the up CCA is 3.

11. method according to claim 8, it is characterised in that second mapping relations include one below son mapping Relation：

3rd sub- mapping relations：When the CCA number is more than 4 times, the grade of the up CCA is 1；In the CCA number For 4 times when, the grade of the up CCA is 2；When the CCA number is 3 times, the grade of the up CCA is 3；Described When CCA number is 2 times, the grade of the up CCA is 4；When the CCA number is 1 time, the grade of the up CCA is 5；When the CCA number is 0 time, the grade of the up CCA is 6；

4th sub- mapping relations：When the CCA number is more than 2 times, the grade of the up CCA is 1；In the CCA number For 2 times when, the grade of the up CCA is 2；When the CCA number is 1 time, the grade of the up CCA is 3；Described When CCA number is 0 time, the grade of the up CCA is 4；

5th sub- mapping relations：When the CCA number is more than 1 time, the grade of the up CCA is 1；In the CCA number For 1 time when, the grade of the up CCA is 2；When the CCA number is 0 time, the grade of the up CCA is 3.

12. method according to claim 4, it is characterised in that the value of the duration of the up CCA detections includes following At least one：

When a length of 16 microsecond and m 9 microsecond sums of the up CCA detection, wherein, m is natural number；

When a length of at least one of of the up CCA detections：25 microseconds, 34 microseconds, 43 microseconds, 52 microseconds, 61 microseconds, 70 Microsecond；

The duration of the up CCA detections is made up of K fixed duration, wherein, the fixed duration is used for a CCA detection, A length of one below when described fixed：16 microseconds, 25 microseconds, 34 microseconds, 43 microseconds；K is positive integer.

13. the method according to claim 4 or 12, it is characterised in that indicated by the duration of the up CCA detections when Between at the beginning of punctum be time that the duration that the end time point of the period is subtracted into the up CCA detection is obtained Point.

14. method according to claim 12, it is characterised in that the duration of the up CCA detections is used for once described Up CCA detections.

15. method according to claim 12, it is characterised in that when the duration of the up CCA detections is fixed by K In the case of length composition, when a length of duration for carrying out used in the K up CCA detection of the up CCA detections；Its In, up CCA detections described each time when a length of fixed duration used.

16. method according to claim 15, it is characterised in that the K is determined by least one of：

Receive the K that base station is pre-configured with；

Detected whether successfully to determine the K according to last up CCA；Wherein, the once up CCA detections failure on described In the case of, the K subtracts Q for last K values；In the case of the once up CCA detections successfully, the K is upper one Secondary K values plus Q；Wherein, Q is integer.

17. method according to claim 4, it is characterised in that the time indicated by duration in the up CCA detections After the interior up CCA detections of progress, methods described also includes：

After the duration for keeping channel idle reaches the duration of the up CCA detection, sent on the sub-frame of uplink Row data.

18. a kind of up clear channel assessment (CCA) CCA detection means, it is characterised in that including：

First determining module, for determining to be used to carry out the period of the subframe of up clear channel assessment (CCA) CCA detections, wherein, Punctum is not later than the starting orthogonal frequency division multiplex OFDM for being used to send upstream data of the subframe at the end of the period The beginning boundary of symbol；Punctum is no earlier than the starting OFDM for sending the upstream data at the beginning of the period The beginning boundary of the top n OFDM symbol of symbol；N is positive integer；

Detection module, for carrying out up clear channel assessment (CCA) CCA detections within the period.

19. device according to claim 18, it is characterised in that

20. device according to claim 19, it is characterised in that preceding 13 OFDM symbols in N is 1, the subframe For sending during downlink data, the 14th OFDM symbol in the subframe is used for the up CCA detections.

21. device according to claim 18, it is characterised in that described device also includes：Second determining module, for root The duration of up CCA detections is determined according to up CCA grade；Wherein, the higher grade of the up CCA, it is determined that it is described on The duration of row CCA detections is longer；

The detection module, is additionally operable to carry out up CCA detections in the time indicated by the duration in the up CCA detections.

22. device according to claim 21, it is characterised in that second determining module be additionally operable to by it is following at least One of parameter determine the grade of the up CCA：Duration, CCA number that number m, scheduling or the plan of 9 microseconds are sent；Wherein, CCA number before the up CCA detection or before a period of time in, terminal perform up CCA detections unsuccessfully cause by The number of times that the upstream data of scheduling can not be sent；Wherein, when a length of terminal that the scheduling or plan are sent sends upstream data Continuous sub-frame of uplink number.

23. device according to claim 22, it is characterised in that second determining module, is additionally operable to be adjusted according to described Spend or the duration of plan transmission finds up CCA corresponding with the duration of the scheduling or plan transmission according to the first mapping relations Grade, the grade of the corresponding up CCA of duration sent with the scheduling or plan is defined as the up CCA's Grade；Wherein, first mapping relations send for scheduling or plan duration and the mapping relations of up CCA grade.

24. device according to claim 23, it is characterised in that second determining module be additionally operable to the scheduling Or in the case of the multiple up CCA of duration correspondence of plan transmission grade, according to the grade of service waiting for transmission or service quality QoS grades, the up CCA is determined from multiple up CCAs corresponding with the duration that the scheduling or plan are sent grade Grade.

25. device according to claim 23, it is characterised in that second determining module be additionally operable to the scheduling Or in the case of the multiple up CCA of duration correspondence of plan transmission grade, according to the CCA number, closed according to the second mapping It is to determine the up CCA from the grade of the multiple up CCAs corresponding with the scheduling or plan are sent duration Grade；Wherein, second mapping relations are CCA number and the mapping relations of up CCA grade.

26. device according to claim 25, it is characterised in that second determining module is additionally operable to when according to described the , will in the case of the CCA number is found in CCA number corresponding to grade of two mapping relations in the multiple up CCA In the multiple up CCA grade up CCA corresponding with CCA number grade be defined as the up CCA etc. Level；And in the case of the corresponding multiple up CCA of duration sent with the scheduling or plan grade, when according to described the In the case of the CCA number is not found in CCA number corresponding to grade of two mapping relations in the multiple up CCA, Using CCA number corresponding to the multiple up CCA up CCA of grade middle grade highest grade as thresholding, in institute CCA number is stated less than in the case of the thresholding, the elementary up CCA in the multiple up CCA grade is determined Grade be the up CCA grade；In the case where the CCA number is more than the thresholding, determine the multiple up The grade of the up CCA of grade highest in CCA grade is the grade of the up CCA.

27. the device according to any one of claim 23 to 26, it is characterised in that first mapping relations include with One of lower sub- mapping relations：

28. device according to claim 25, it is characterised in that second mapping relations include one below son mapping Relation：

29. device according to claim 21, it is characterised in that the value of the duration of the up CCA detections include with It is at least one lower：

30. the device according to claim 21 or 29, it is characterised in that indicated by the duration of the up CCA detections Punctum is the time that the duration that the end time point of the period is subtracted into the up CCA detections is obtained at the beginning of time Point.

31. device according to claim 29, it is characterised in that the duration of the up CCA detections is used for once described Up CCA detections.

32. device according to claim 29, it is characterised in that when the duration of the up CCA detections is fixed by K In the case of length composition, when a length of duration for carrying out used in the K up CCA detection of the up CCA detections；Its In, up CCA detections described each time when a length of fixed duration used.

33. device according to claim 32, it is characterised in that second determining module be additionally operable to by it is following at least One of determine the K：

Receive the K that base station is pre-configured with；

34. device according to claim 21, it is characterised in that described device also includes：

Sending module, for after the duration that the duration of holding channel idle reaches the up CCA detections, described up Upstream data is sent in subframe.

35. a kind of terminal, it is characterised in that including the device described in claim 18 to any one of claim 34.