CN108605357A

CN108605357A - A kind of transmission method of uplink signal, UE and base station

Info

Publication number: CN108605357A
Application number: CN201680081189.9A
Authority: CN
Inventors: 杨美英; 李�远; 官磊; 马莎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2018-09-28
Also published as: WO2017132960A1

Abstract

The present invention provides a kind of transmission method of uplink signal, UE and base station, is related to the communications field, is used to indicate UE and is carried out at the same time uplink signal transmission as far as possible, can reduce interfering with each other between UE.Including：Base station is that UE determines the first sending time point and the second sending time point；The first sending time point is the time point that the UE sends current uplink signal earliest, and the second sending time point is that have " the sending time point of signal in the current uplink signal；Second sending time point is late " the first sending time point；Base station sends notice signaling to UE and indicates the first sending time point and the second sending time point, or sends notice signaling to UE and indicate the first sending time point.UE determines the practical sending time point for sending the current uplink signal according to the first sending time point and the second sending time point.UE sends current uplink signal since practical sending time point, and base station receives the current uplink signal since the second sending time point.

Description

A kind of transmission method of uplink signal, UE and base station

Technical field

The present invention relates to the communications field more particularly to a kind of transmission methods of uplink signal, UE and base station.

Background technique

Frequency spectrum includes unlicensed spectrum and authorization frequency spectrum.Resource is greater than authorization frequency spectrum resource.It is coexisted on unlicensed spectrum there are many standard is wirelessly communicated, for example, LAA (Licensed-Assisted Access, the access of authorization frequency spectrum auxiliary) and Wi-Fi has coexisted in 5GHz frequency range.In order to guarantee coexisting for LAA and Wi-Fi, Listen Before Talk (LBT is first listened and sent out afterwards) mechanism is introduced.I.e. LAA node first carries out channel sense, only listens to channel idle, could send signal before signal transmission.

LAA UL (uplink, uplink) transmission generally uses multi-subscriber dispatching, and UE sends upstream data based on the scheduling of eNB, meanwhile, UE needs to listen to wireless channel before sending upstream data.It is only dispatched to by eNB, and channel sense is the result is that idle UE just can be carried out signal transmission.

And the LBT mechanism and parameter for participating in the UE (by the UE that eNB is dispatched) of channel competition are not quite similar, and/or channel propagation conditions are different, it may be different at the time of each UE will be caused to send upstream data, UE to first be sent can interfere the UE of rear transmission, so that the UE channel sense result sent afterwards is busy, to not can be carried out upstream data transmission, cause to interfere with each other between UE.

Summary of the invention

The embodiment of the present invention provides the transmission method, UE and base station of a kind of uplink signal, when reducing different UE while sending uplink signal caused by interfere with each other.

In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that

In a first aspect, disclosing a kind of transmission method of uplink signal, comprising:

Firstly, base station determines the first sending time point in candidate sending time point set for user equipment (UE).The first sending time point is that the UE sends current uplink letter earliest Number time point.Wherein, the earliest time point for sending current uplink signal, refer to that UE allows to send the earliest time point of current uplink signal.UE does not allow to send uplink signal before the first sending time point CCA success yet, but until the first sending time point sends current uplink signal or sends current uplink signal between the first sending time point and the second sending time point.Here the second sending time o'clock is the sending time point for the useful signal that UE is sent in the current uplink signal after the first sending time point.

In addition, the first sending time point belongs to candidate sending time point set, candidate's sending time point set includes 1 candidate sending time points, that is to say, that there are many may for the first sending time point.

It should be noted that base station is to determine the first sending time point at the time of sending uplink signal according to reference UE.Specifically, record has the LBT parameter of each scheduled UE (such as: random back initial value, random back range value, random back initial time), therefore base station can determine that each scheduled UE completes CCA (clear channel assessment, headroom channel evaluation and test) random back (i.e. random back initial value is kept to zero) time point, can determine that some completes the later UE of CCA random back is with reference to UE, complete the time point of CCA random back with reference to UE with reference to this when determining first time point, so that the first sending time point completes the time point of CCA random back as close to this with reference to UE.In a word, base station, which can determine, obtains the time point that the channel right to use sends uplink signal at once with reference to UE, it also can be that other scheduled UE determine the first sending time point for sending uplink signal earliest according to the time point that reference UE sends uplink signal, so that the practical sending time point that UE sends uplink signal sends the time point of uplink signal as close to reference UE, so that each UE is aligned transmission as far as possible.

In addition, base station also can determine whether the second sending time point；The second sending time point is the sending time point of the useful signal in the current uplink signal, and the second sending time point is no earlier than the first sending time point.Here useful signal refers to that UE is actually subjected to the effective information transmitted to base station, does not include filling information.The UE that second sending time point can be understood as base station identification sends the time point of current uplink signal, it is likely that being not the UE practical time point for sending the current uplink signal.

Secondly, the base station is sent to the UE when the modern instruction described first of letter being notified to send Between point and the second sending time point, or send to the UE that notice letter is modern to indicate the first sending time point.The UE sends the current uplink signal according to the first sending time point and the second sending time point.It should be noted that UE determines the second sending time point, and believes the first sending time point of modern acquisition according to notice if base station is by notice the first sending time point of letter the present instruction.

Finally, the base station receives the current uplink signal that the UE is sent since the second sending time point.Here, although UE might not send the current uplink signal in the second sending time point, base station is bound to start to receive uplink signal in the second sending time point.

In existing LTE, UE sends the time point of uplink signal (i.e. UL signal), and the time of UL scheduling information (the i.e. UL grant) instruction of the UE is dispatched depending on base station.Exemplary, the base station n moment sends UL scheduling information, and UE then sends UL signal at the n+k moment.Wherein, for a certain communication pattern, k value is fixed and invariable.Such as: for FDD (Frequency Division Duplexing, frequency division duplex), k=4.

In LAA, after base station sends UL scheduling information, UE also needs to listen to stand-by channel, according to the result of channel sense to determine whether obtaining the channel right to use.Only after UE is dispatched by base station and obtained the channel right to use, which could send uplink signal.Therefore, at the time of existing LTE uplink scheduling can not indicate UE practical transmission uplink signal.In addition, due to the channel condition difference of scheduled UE, LBT parameter difference etc., it is different at the time of each UE will be made to send uplink signal, therefore UE may carry out channel measurement in other UE busy channels, the UE thinks that channel is unavailable, uplink signal will not be sent at the time of should carry out uplink signal transmission, to cause interfering with each other between the UE not sent simultaneously.

In the present invention, base station can determine that UE can send the first sending time point of current uplink signal earliest, and UE sends the second sending time point of the useful signal in current uplink signal, and the first sending time point and/or the second sending time point are indicated to UE, so that UE determines the practical sending time point of current uplink signal according to the first sending time point and the second sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, since the first sending time point that base station determines returns at random close to reference to UE completion CCA The time point moved back, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

Wherein, the candidate sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.

Specifically, UE can carry out the random back (backoff counter subtracts) of CCA in CCA time window, the channel sense of a length of one shot when being also possible to carry out.The first time point of pre-configuration can be detect in the CCA time window successfully after time point for being sent after progress self-defer immediately, the second time point being pre-configured can be detect in the CCA time window successfully after time point for being sent after progress padding immediately, in short, first time point is different with the second time point.

Here, above-mentioned " sending immediately " is done to illustrate, if the random back of CCA successful time point, on subframe (or symbol) boundary, so-called send immediately sends since this sub-frame boundary (or character boundary)；If the random back of CCA successful time point, can be by sending since return back to this sub-frame boundary (or character boundary) just not on subframe (or symbol) boundary.

Here the first preset duration, the second preset duration can be relative time, such as: initial time is the 1st symbol of the n-th subframe, Shi Changwei 0.5us.It is also possible to absolute time, such as: initial time is the 1st symbol of the n-th subframe, and finish time is the 5th symbol of the n-th subframe.UE can carry out padding (sending filling signal to base station) in first preset duration, the second preset duration, can also carry out self-defer (from retracting) operation, can listen to channel, can not also listen to channel.

In addition, it is necessary to illustrate, the padding of certain time length can be carried out in the random back off procedure of CCA, be also possible to complete continual random back off procedure.

With reference to first aspect, in the first possible implementation of the first aspect, described After base station sends notice letter the present to the UE, the method also includes:

The base station sends competition window information to the UE, and the competition window information is used to indicate rollback initial value, and the rollback initial value is used for the random back of idle channel assessment.The UE determines rollback initial value according to the competition window information, carries out the random back of idle channel assessment CCA.UE can determine a rollback initial value according to competition window information.Exemplary, base station and UE maintain identical competition window, and competition window includes four rollback initial values, it is indicated respectively with 00,01,10,11, wherein 00,01,10,11 be competition window information, if base station indicates that 00, UE can determine its corresponding rollback initial value according to 00.Certainly, base station and UE maintain the corresponding relationship of competition window information and initial value in advance, such as: 00,01,10,11 corresponding rollback initial value.The two maintenance corresponding relationship be it is identical, the same competition window information corresponds to identical rollback initial value with UE in base station.

Or, the base station sends the rollback initial value to the UE, the rollback initial value is used for the random back of idle channel assessment.UE can carry out the random back of idle channel assessment CCA according to the rollback initial value.

In addition, the random back of CCA is done to illustrate, UE starts to carry out CCA to channel particular moment (can be base station instruction), once measuring signal strength indication lower than threshold value, rollback initial value is then subtracted into certain numerical value (above-mentioned rollback range value), continues CCA, signal strength indication is measured and then continues to subtract certain numerical value lower than threshold value, and so on, until rollback initial value is kept to zero.

With reference to first aspect or the first possible implementation of first aspect, in the second possible implementation of the first aspect, the method also includes:

The base station sends the end time point of the current uplink signal to the UE.

Second aspect discloses a kind of transmission method of uplink signal, comprising:

First, UE obtains the first sending time point, the first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points.Wherein, the earliest time point for sending current uplink signal, refer to that UE allows to send the earliest time point of current uplink signal.UE before the first sending time point i.e. CCA success is set also not allow to send uplink signal, but until the first sending time point sends current uplink signal or sends current uplink signal between the first sending time point and the second sending time point.Here the second sending time o'clock is the sending time point for the useful signal that UE is sent in the current uplink signal after the first sending time point.

Wherein, the second sending time point can be what UE was obtained according to the instruction of base station, be also possible to time point sanctified by usage in LTE system, such as: sub-frame boundary, character boundary.

Secondly, the UE executes CCA operation to stand-by up channel；

Finally, the UE determines the practical sending time point of the current uplink signal according to the result that the first sending time point and the CCA are operated.At so-called practical sending time point, that is, UE practical time point for carrying out uplink transmission, the time point of the useful signal in current uplink signal can be sent earlier than UE.

The UE begins through described to the stand-by up channel transmission current uplink signal from the practical sending time point.

In the present invention, first sending time point is the time point that the UE that base station determines can send current uplink signal earliest, UE determines that the practical sending time point of current uplink signal, i.e. UE adjust practical sending time point according to the instruction of base station according to the result that the first sending time point and CCA are operated.Close to the time point for completing CCA random back with reference to UE, (i.e. the acquisition channel right to use sends uplink signal to the first sending time point determined due to base station at once Time point), therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

In conjunction with second aspect, in the first possible implementation of the second aspect,

Before the UE executes CCA operation to stand-by up channel, the method also includes:

The UE obtains the second sending time point, and the second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point, and the second sending time point can be after the practical sending time point of UE.

In conjunction with the first possible implementation of second aspect, in a second possible implementation of the second aspect, the UE executes CCA operation to stand-by up channel and specifically includes:

The UE determines rollback initial value, and the random back of CCA is carried out according to the rollback initial value.The random back of so-called CCA, i.e. UE carry out the channel sense of certain time, listen to channel idle and the rollback initial value of counter is then subtracted certain numerical value, and and so on, until rollback initial value is kept to zero, that is, UE obtains the channel right to use.

The UE determines the practical sending time point of the current uplink signal according to the result that the first sending time point and the CCA are operated, comprising:

The UE determines the practical sending time point of the current uplink signal according to the result of the first sending time point and the second sending time point and the random back.

In conjunction with the possible implementation of first or second kind of second aspect, in the third possible implementation of the second aspect,

The UE determines that the practical sending time point of the current uplink signal specifically includes according to the result of the first sending time point and the second sending time point and the random back:

If the random back of the CCA successful time point is not later than the first sending time point, UE if, determines that the practical sending time point is no earlier than the first sending time point.That is, UE before the first sending time point random back success (i.e. with Zero) machine rollback initial value is kept to, time sending time point is at least after the first sending time point, it is preferable that time sending time point is the first sending time point.

Or, if the random back of the CCA successful time point is later than the first sending time point and is not later than the second sending time point, UE if, determines that the practical sending time point is no earlier than the random back successful time point and is not later than the second sending time point.That is, UE random back success between the first sending time point and the second sending time point, time sending time point is between random back successful time point and the second sending time point.

In conjunction with second aspect first to the third possible realization implementation, in the fourth possible implementation of the second aspect,

The UE receives the competition window information that the base station is sent, and determines the rollback initial value according to the competition window information；The competition window information is used to indicate the rollback initial value；

Or, the UE receives the rollback initial value that the base station is sent；

Or, the UE obtains competition window information, the rollback initial value is determined according to the competition window information.

In conjunction with any one of second aspect or first to fourth kind of possible implementation of second aspect, in the 5th kind of possible implementation of second aspect,

The UE obtains the first sending time point and specifically includes:

The UE receives the notice that base station is sent and believes the present, believes that modern obtain states the first sending time point and the second sending time point according to the notice.

Or, the UE, which receives the notice that base station is sent, believes the present, believe that modern obtain states the first sending time point and the second sending time point according to the notice.

Here, can be, notice letter is modern to carry the first sending time point and the second sending time point, has notice letter modern described in UE parsing, obtains the first sending time point and the second sending time point；Alternatively, the instruction information of notice letter modern the first sending time of the instruction point carried and the second sending time point, UE notify letter is modern to carry the first sending time point and the second sending time point according to the instruction acquisition of information.It is of course also possible to which being that notice letter is modern carries the first sending time point, there is notice letter modern described in UE parsing, obtain the first sending time point； Or, the instruction information of modern instruction the first sending time point carried of notice letter, UE is according to instruction acquisition of information the first sending time point, UE, which understands, at this time oneself determines the second sending time point, and the second sending time point can be the LTE systems such as sub-frame boundary (or character boundary) the predetermined time point being commonly called as.

In conjunction with the third possible implementation of second aspect, in the sixth possible implementation of the second aspect, the method also includes including:

If the UE determines the practical sending time point earlier than the second sending time point, the UE sends the useful signal in the current uplink signal then in the practical sending time point to the filling signal sent in the current uplink signal between the second sending time point since the second sending time point.

Here the content of filling signal is not limited, it can be with sequence, reference signal, data information etc., why between practical sending time point and the second sending time point filling signal is sent, it is to indicate determining practical sending time o'clock before the second sending time point according to base station due to UE, result in order not to carry out CCA to other UE interferes, UE needs the busy channel since practical sending time point, but practical sending time point is different from the second sending time point herein, therefore useful signal cannot be sent, it can be by sending filling signal padding come busy channel.

In conjunction with the first possible implementation of second aspect, in the 7th kind of possible implementation of second aspect,

The UE executes CCA operation to stand-by up channel and specifically includes:

The UE carries out CCA in the first CCA time window before the first sending time point；

If the signal energy that the UE is detected in the first CCA time window is not higher than energy threshold, UE if, determines the practical sending time point for the first sending time point.

Here, as long as the signal energy that UE is detected in the first CCA time window is not higher than energy threshold, so that it may determine that stand-by up channel for the free time, can be obtained the channel The right to use.

In conjunction with the 7th kind of possible implementation of second aspect, in the 8th kind of possible implementation of second aspect,

If the signal energy that the UE is detected in the first CCA time window is higher than the energy threshold, the UE carries out CCA in the 2nd CCA time window before third sending time point；The third sending time point is after the first sending time point and before the second sending time point；

If the signal energy that the UE is detected in the 2nd CCA time window is not higher than the energy threshold, the UE determines that the practical sending time point is the third sending time point.

In conjunction with the 8th kind of possible implementation of second aspect, in the 9th kind of possible implementation of second aspect,

The third sending time point belongs to the candidate sending time point set.

In conjunction with any one of the 7th to the 9th kind of possible implementation of second aspect, in the tenth kind of possible implementation of second aspect, for the uplink signal in current time burst window, the unexpected time window includes the transmission of downlink signal and the uplink signal.

In conjunction with any one of second aspect or first to the tenth kind of possible implementation of second aspect, in a kind of the tenth possible implementation of second aspect, the method also includes:

The UE receives the end time point for the current uplink signal that the base station is sent；Or,

The UE obtains the end time point of the current uplink signal according to the first sending time point.It can be base station and indicate the transmission duration of current uplink signal, the transmission duration that base station is indicated according to practical sending time point and base station, so that it may determine the finish time of current uplink signal.

The third aspect discloses a kind of base station, comprising:

Determination unit, for being that user equipment (UE) determines the first sending time point in candidate sending time point set；The first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, Candidate's sending time point set includes 1 candidate sending time points；

The determination unit is also used to, and determines the second sending time point；The second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point；

Transmission unit believes that the present indicates the first sending time point and the second sending time point for sending notice to the UE, or sends notice to the UE and believe that the present indicates the first sending time point；

Receiving unit, the current uplink signal sent for receiving the UE since the second sending time point；

In the present invention, base station can determine that UE can send the first sending time point of current uplink signal earliest, and UE sends the second sending time point of the useful signal in current uplink signal, and the first sending time point and/or the second sending time point are indicated to UE, so that UE determines the practical sending time point of current uplink signal according to the first sending time point and the second sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point close time point that CCA random back is completed with reference to UE determined due to base station, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible simultaneously Uplink signal transmission is carried out, interfering with each other between UE is reduced.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the transmission unit is also used to, after sending notice letter the present to the UE, competition window information is sent to the UE, the competition window information is used to indicate rollback initial value, and the rollback initial value is used for the random back of idle channel assessment；

Or, sending the rollback initial value to the UE, the rollback initial value is for sky The random back of idle channel assessment.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, in the first possible implementation of the third aspect, the transmission unit is also used to, and Xiang Suoshu UE sends the end time point of the current uplink signal.

Fourth aspect discloses a kind of user equipment (UE), comprising:

Acquiring unit, for obtaining the first sending time point, the first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points；

Channel evaluates and tests unit, for executing idle channel evaluation and test CCA operation to stand-by up channel；

Determination unit, for determining the practical sending time point of the current uplink signal according to the result of the first sending time point and CCA operation；

Transmission unit, it is described to the stand-by up channel transmission current uplink signal for being begun through from the practical sending time point；

In the present invention, first sending time point is the time point that the UE that base station determines can send current uplink signal earliest, UE determines that the practical sending time point of current uplink signal, i.e. UE adjust practical sending time point according to the instruction of base station according to the result that the first sending time point and CCA are operated.The the first sending time point determined due to base station is close to the time point (i.e. the acquisition channel right to use sends time point of uplink signal at once) for completing CCA random back with reference to UE, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the acquiring unit is also used to, before channel assessment unit executes CCA operation, the second sending time point is obtained, the second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point.

In conjunction with the first possible implementation of fourth aspect, in the second possible implementation of the fourth aspect, the channel assessment unit is specifically used for, and determines rollback initial value, and the random back of CCA is carried out according to the rollback initial value；

The determination unit is specifically used for, and the practical sending time point of the current uplink signal is determined according to the result of the first sending time point and the second sending time point and the random back.

In the possible implementation of first or second kind in conjunction with fourth aspect, in the third possible implementation of the fourth aspect, the determination unit is specifically used for, if the random back of the CCA successful time point is not later than the first sending time point, it is determined that the practical sending time point is no earlier than the first sending time point；

Or, if the random back of the CCA successful time point is later than the first sending time point and is not later than the second sending time point, it is determined that the practical sending time point is no earlier than the random back successful time point and is not later than the second sending time point.

It further include the first receiving unit in the fourth possible implementation of the fourth aspect in conjunction in the first or second of fourth aspect or the third possible implementation,

First receiving unit is used for, and receives the competition window information that the base station is sent；

The channel assessment unit is specifically used for, and determines the rollback initial value according to the competition window information；The competition window information is used to indicate the rollback initial value；

Or, receiving the rollback initial value that the base station is sent；

Or, obtaining competition window information, the rollback initial value is determined according to the competition window information.

It further include the second receiving unit in the 5th kind of possible implementation of fourth aspect in conjunction with any one of fourth aspect or first to fourth kind of possible implementation of fourth aspect,

Second receiving unit is used for, and is received the notice that base station is sent and is believed the present；

The acquiring unit is specifically used for, and states the first sending time point and the second sending time point according to received modern obtain of notice letter of second receiving unit；

Or, believing that modern obtain states the first sending time point according to the notice.

In conjunction with any one of fourth aspect or first to the 5th kind of possible implementation of fourth aspect, in the 6th kind of possible implementation of fourth aspect, the transmission unit is also used to, if the determination unit determines the practical sending time point earlier than the second sending time point, the useful signal in the current uplink signal is then sent since the second sending time point to the filling signal sent in the current uplink signal between the second sending time point in the practical sending time point.

In conjunction with the first possible implementation of fourth aspect, in the 7th kind of possible implementation of fourth aspect, the channel assessment unit is specifically used for, and carries out CCA in the first CCA time window before the first sending time point；

The determination unit is specifically used for, if the signal energy that channel assessment unit detects in the first CCA time window is not higher than energy threshold, it is determined that the practical sending time point is the first sending time point.

In conjunction with the 7th kind of possible implementation of fourth aspect, in the 8th kind of possible implementation of fourth aspect, the channel assessment unit is also used to, if the signal energy detected in the first CCA time window is higher than the energy threshold, CCA is carried out in the 2nd CCA time window before third sending time point；The third sending time point is after the first sending time point and before the second sending time point；

The determination unit is specifically used for, if the signal energy that channel assessment unit detects in the 2nd CCA time window is not higher than the energy threshold, it is determined that the practical sending time point is the third sending time point.

In conjunction with the 8th kind of possible implementation of fourth aspect, in the 9th kind of possible implementation of fourth aspect, the third sending time point belongs to the candidate sending time point set.

In conjunction with fourth aspect the 7th to the 9th kind of possible implementation kind it is any, in the tenth kind of possible implementation of fourth aspect, the uplink signal is in current burst In time window, the unexpected time window includes the transmission of downlink signal and the uplink signal.

In conjunction with fourth aspect the 7th to the tenth kind of possible implementation kind it is any, further include third receiving unit in a kind of the tenth possible implementation of fourth aspect,

The third receiving unit is used for, and receives the end time point for the current uplink signal that the base station is sent；Or,

The acquiring unit is also used to, and the end time point of the current uplink signal is obtained according to the first sending time point.

5th aspect, discloses a kind of base station, comprising:

Determination unit, for being that user equipment (UE) determines the first sending time point in candidate sending time point set；The first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points；

In the present invention, base station can determine that UE can send the first sending time point of current uplink signal earliest, and UE sends the second sending time point of the useful signal in current uplink signal, and the first sending time point and/or the second sending time point are indicated to UE, so that UE determines current uplink signal according to the first sending time point and the second sending time point Practical sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point close time point that CCA random back is completed with reference to UE determined due to base station, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the transmission unit is also used to, after sending notice letter the present to the UE, competition window information is sent to the UE, the competition window information is used to indicate rollback initial value, and the rollback initial value is used for the random back of idle channel assessment；

Or, sending the rollback initial value to the UE, the rollback initial value is used for the random back of idle channel assessment.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in the first possible implementation of the 5th aspect, the transmission unit is also used to, and Xiang Suoshu UE sends the end time point of the current uplink signal.

6th aspect, discloses a kind of user equipment (UE), comprising:

Acquiring unit, for obtaining the first sending time point, the first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes at least two times It publishes and send time point；

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the acquiring unit is also used to, before channel assessment unit executes CCA operation, the second sending time point is obtained, the second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point.

In conjunction with the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect, the channel assessment unit is specifically used for, and determines rollback initial value, and the random back of CCA is carried out according to the rollback initial value；

In the possible implementation of first or second kind in conjunction with the 6th aspect, in the third possible implementation of the 6th aspect, the determination unit is specifically used for, if the random back of the CCA successful time point is not later than the first sending time point, it is determined that the practical sending time point is no earlier than the first sending time point；

In conjunction with the 6th aspect the first or second or the third possible implementation in, the 6th aspect the 4th kind of possible implementation in, further include the first receiving unit,

Or, receiving the rollback initial value that the base station is sent；

It further include the second receiving unit in the 5th kind of possible implementation of the 6th aspect in conjunction with any one of first to fourth kind of possible implementation of the 6th aspect or the 6th aspect,

In conjunction with any one of first to the 5th kind of possible implementation of the 6th aspect or the 6th aspect, in the 6th kind of possible implementation of the 6th aspect, the transmission unit is also used to, if the determination unit determines that the practical sending time point earlier than the second sending time point, is sent in the practical sending time point between the second sending time point Filling signal in the current uplink signal sends the useful signal in the current uplink signal since the second sending time point.

In conjunction with the first possible implementation of the 6th aspect, in the 7th kind of possible implementation of the 6th aspect, the channel assessment unit is specifically used for, and carries out CCA in the first CCA time window before the first sending time point；

In conjunction with the 7th kind of possible implementation of the 6th aspect, in the 8th kind of possible implementation of the 6th aspect, the channel assessment unit is also used to, if the signal energy detected in the first CCA time window is higher than the energy threshold, CCA is carried out in the 2nd CCA time window before third sending time point；The third sending time point is after the first sending time point and before the second sending time point；

In conjunction with the 8th kind of possible implementation of the 6th aspect, in the 9th kind of possible implementation of the 6th aspect, the third sending time point belongs to the candidate sending time point set.

In conjunction with the 6th aspect the 7th to the 9th kind of possible implementation kind it is any, in the tenth kind of possible implementation of the 6th aspect, for the uplink signal in current time burst window, the unexpected time window includes the transmission of downlink signal and the uplink signal.

In conjunction with the 6th aspect the 7th to the tenth kind of possible implementation kind it is any, further include third receiving unit in a kind of the tenth possible implementation of the 6th aspect,

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the description of the embodiments or prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 a is that UE provided in an embodiment of the present invention alignment sends schematic diagram；

Fig. 1 b is the unjustified transmission schematic diagram of UE provided in an embodiment of the present invention；

Fig. 2 is the interaction schematic diagram in the communication system that the embodiment of the present invention 1 provides；

Fig. 3 is the flow diagram of the transmission method for the uplink signal that the embodiment of the present invention 2 provides；

Fig. 4 is the schematic diagram for the first sending time point that the embodiment of the present invention 2 provides；

Fig. 5 is the schematic diagram for the second sending time point that the embodiment of the present invention 2 provides；

Fig. 6 is the flow diagram of the transmission method for the uplink signal that the embodiment of the present invention 3 provides；

Fig. 7 is the structural block diagram for the base station that the embodiment of the present invention 4 provides；

Fig. 8 is the structural block diagram for the UE that the embodiment of the present invention 5 provides；

Fig. 9 is another structural block diagram for the UE that the embodiment of the present invention 5 provides；

Figure 10 is another structural block diagram for the UE that the embodiment of the present invention 5 provides；

Figure 11 is another structural block diagram for the UE that the embodiment of the present invention 5 provides.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.

Firstly, doing several concepts of the present invention to illustrate.Multi-subscriber dispatching: in LTE communication system, multiple communication terminals can carry out signal transmission or signal reception simultaneously in the same subframe, on frequency spectrum resource.I.e. each user occupancy part frequency domain resource, so as to accommodate multiple user's concurrent multiplexing frequency spectrum resources simultaneously.

Channel sense (CCA): it before node busy channel sends signal, first has to detect channel, detection mode can have energy measuring, signal detection etc..

Base station (eNB or cell or access network equipment): in general, being signalling in downstream communications link.It is receiving side signal in uplink communication links, and the sender of control information (it is modern that launch party controls letter) etc..

UE (terminal) is in general, be the sender of signal in uplink communication links.It is the recipient of signal in downstream communications link.

The channel right to use: communication node obtains the license in channel transmission signal by certain mode, can be considered obtaining the right to use of the channel.For example, channel resource is distributed by dispatching algorithm in base station, the node being scheduled can then be considered as obtaining the channel right to use.In the present invention, UE is refered in particular in accordance with the communication mechanism sent out afterwards is first listened, and detection channel result is the free time, can carry out data transmission, then can also be considered as obtaining the channel right to use.

For in LAA UL (uplink, uplink) transmission, UE needs to listen to wireless channel before signal transmission.It is only dispatched to by base station, and channel sense is the result is that idle UE (i.e. the acquisition channel right to use) just can be carried out signal transmission.And (such as: random back initial value is different for the LBT parameter for the UE being each scheduled, judge energy measuring thresholding, the channel measurement condition etc. of channel busy) it has differences, it will cause difference at the time of each UE obtains the channel right to use, it therefore may be different at the time of each UE sends signal, node to first be sent interferes the node of rear transmission, so that after the node sent afterwards is due to being interfered, channel sense result is busy, to not can be carried out signal transmission, i.e. (blocking) is hindered mutually between UE.

Specifically, with reference to Fig. 1 a.Assuming that UE1, UE2, UE3, UE4, are dispatched in subframe n by base station, before the transmission of n+k time data, each UE carries out listening to channel, if, if detecting channel idle, random back counter (backoff counter) subtracts certain numerical value in time of intercept.Until backoff counter reduces to always zero, UE obtains the channel right to use, UE can send uplink signal (i.e. PPDU in Fig. 1 a), if the LBT parameter of UE1, UE2, UE3, UE4 are all the same, the backoff counter of UE1, UE2, UE3, UE4 reduce to zero simultaneously, backoff counter will send uplink signal simultaneously, then mutual interference is not present between UE.But due to the LBT of each UE Parameter may be different, for example, backoff counter configuration is different, so that the small UE of backoff counter rollback initial value may first reduce to zero, so that the UE first carries out signal transmission.With reference to Fig. 1 a, such as UE2, UE3.UE2, the UE3 first sent out at this time can interfere UE1, the UE4 for carrying out channel sense, so that the channel sense result of UE1, UE4 are busy, so that UE1, UE4 cannot obtain the channel right to use, so that signal cannot be sent.

The principle of the invention lies in, base station can send the first sending time point of current uplink signal to UE instruction UE earliest, UE determines the practical sending time point of current uplink signal according to the first sending time point and the second sending time point (time point of UE transmission useful signal), that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point close time point that CCA random back is completed with reference to UE determined due to base station, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

Embodiment 1:

The embodiment of the present invention provides a kind of communication system, as shown in Fig. 2, the communication system includes base station 10 and at least one UE20.For the UE that the embodiment of the present invention is dispatched by one by the base station, the transmission method of uplink signal provided in an embodiment of the present invention is introduced.

As shown in Fig. 2, the base station 10 includes processor 101, transmitter 102 and receiver 103 and memory 104.The UE20 includes processor 201, transmitter 202 and receiver 203 and memory 204.

It should be noted that wherein, processor 101, processor 201 can be central processing unit (English: central processing unit, abbreviation: CPU).

Transmitter 102, transmitter 202 can be by optical transmitting set, electric transmitter, wireless transmitter or any combination thereof realizations.Such as, optical transmitting set can be Small Form-Factor Pluggable (English: small form-factor pluggable transceiver, abbreviation: SFP) transmitter (English: transceiver), enhance Small Form-Factor Pluggable (English: enhanced small form-factor pluggable, abbreviation: SFP+) transmitter or 10 gigabit Small Form-Factor Pluggables (English: 10Gigabit small form-factor pluggable, abbreviation: XFP) transmitter.Electric transmitter can be Ethernet (English: Ethernet) network and connect Mouth controller (English: network interface controller, abbreviation: NIC).Wireless transmitter can be radio network interface controller (English: wireless network interface controller, abbreviation: WNIC).

Receiver 103, receiver 203 can be by optical receiver, electric receiver, wireless receiver or any combination thereof realizations.For example, optical receiver can be Small Form-Factor Pluggable receiver, enhance Small Form-Factor Pluggable receiver or 10 gigabit Small Form-Factor Pluggable receivers.Electric receiver can be ethernet network interface controller.Wireless receiver can be radio network interface controller.

Memory 104 (memory 204) is transferred to the processor 101 (processor 201) for storing program code, and by the program code, and processor 101 (processor 201) executes following instructions according to program code.Memory 104 (memory 204) may include volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM)；Memory 104 (memory 204) also may include nonvolatile memory (English: non-volatile memory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state hard disk (English: solid-state drive, abbreviation: SSD).Memory 104 (memory 204) can also include the combination of the memory of mentioned kind.

With reference to Fig. 2, the transmission method of uplink signal provided by the invention the following steps are included:

S1, processor 101 determine the first sending time point, the second sending time point.

Wherein, it is that UE is determining that the first sending time point is the time point that the UE sends current uplink signal earliest in candidate sending time point set that the first sending time point, which is base station,.Candidate's sending time point set includes 1 candidate sending time points.In addition, the second sending time point is the sending time point of the useful signal in the current uplink signal.

It should be noted that the earliest time point for sending current uplink signal, refers to that UE allows to send the earliest time point of current uplink signal.UE does not allow to send uplink signal before the first sending time point CCA success yet, but until the first sending time point sends current uplink signal or sends out between the first sending time point and the second sending time point Send current uplink signal.Here the second sending time o'clock is the sending time point for the useful signal that UE is sent in the current uplink signal after the first sending time point.

Wherein, so-called CCA is successfully that UE detects that signal energy is kept to zero not higher than energy threshold or UE the rollback initial value in CCA time window in CCA time window.

S2, transmitter 102 send notice letter modern instruction the first sending time point and the second sending time point to the UE.

In this way, the UE is made to send the current uplink signal according to the first sending time point and the second sending time point.

Here, notice letter the present that transmitter 102 is sent to the UE can only indicate that the first sending time point, the processor 201 of UE determine a time point sanctified by usage as the second sending time point.

S3, receiver 203 receive notice letter the present, and processor 201 obtains the first sending time point and the second sending time point.

In the specific implementation, processor 201 believes the first sending time point of modern acquisition and the second sending time point according to notice.Alternatively, determining that a sub-frame boundary (or character boundary) is the second sending time point after believing the first sending time point of modern acquisition according to notice.

S4, processor 201 execute CCA operation to stand-by up channel.

Specifically, it can be determining rollback initial value, the random back of idle channel evaluation and test CCA carried out according to the rollback initial value that the determination unit determines.At this point, processor 201 needs to obtain the first sending time point and the second sending time point.

Alternatively, carrying out CCA in CCA time window, only need to obtain the first sending time point in this processor 201.

S5, processor 201 determine the practical sending time point of the current uplink signal according to the result that the first sending time point and the second sending time point and the CCA operate.

It should be noted that, if the random back that CCA operation is CCA, transmitter 102 sends notice to the UE and believes that the present only indicates the first sending time point, a second sending time point is determined in this processor 201, and then determines that the current uplink is believed according to the result of the first sending time point and the second sending time point and the random back Number practical sending time point.

In addition, if CCA operation is to carry out CCA in the first CCA time window, notice letter the present only indicates the first sending time point, determines the practical sending time point of the current uplink signal according to the testing result in the first sending time point and the first CCA time window in this processor 201.

Specifically, if the random back of the CCA successful time point is not later than the first sending time point, it is determined that the practical sending time point is no earlier than the first sending time point；

S6, transmitter 202 begin through described to the stand-by up channel transmission current uplink signal from the practical sending time point.

S7, receiver 103 receive the current uplink signal that the UE is sent since the second sending time point.

It should be noted that candidate's sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.

In addition, the application scenarios of method provided in an embodiment of the present invention may include following several:

Scene one: macro station and small station work on authorization frequency spectrum and unlicensed spectrum respectively in such a way that carrier wave polymerize.Small station is connected with macro station by ideal return link.

Scene two: macro station work works on authorization frequency spectrum and unlicensed spectrum in such a way that carrier wave polymerize respectively in authorization frequency spectrum, small station.The authorization frequency spectrum in small station is connected with unlicensed spectrum by ideal return link.Small station is connected with macro station by ideal or non-ideal return link.

Scene three: small station works on authorization frequency spectrum and unlicensed spectrum respectively in such a way that carrier wave polymerize.The authorization frequency spectrum in small station is connected with unlicensed spectrum by ideal return link.Under the scene, macro station is without covering service on a large scale.

Wherein, base station described in the embodiment of the present invention can be the macro station in above-mentioned three kinds of scenes, and the information transmission between UE can be carried out by authorization frequency spectrum, can also be carried out by unlicensed spectrum.

The transmission method of uplink signal provided in an embodiment of the present invention, base station can determine that UE can send the first sending time point of current uplink signal earliest, and the first sending time point and the second sending time point are indicated to UE, so that UE determines the practical sending time point of current uplink signal according to the first sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point close time point that CCA random back is completed with reference to UE determined due to base station, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.It should be noted that, for the first sending time point that can be sent earliest, even if saying that UE CCA before the first sending time point is successfully also not allow to send uplink signal, and can send current uplink signal after the first sending time point or the first sending time point and before the second sending time point.

Embodiment 2:

The embodiment of the present invention provides a kind of transmission method of uplink signal, as shown in figure 3, the described method comprises the following steps:

301, base station determines the first sending time point and the second sending time point.

Wherein, the first sending time point is the time point that UE sends current uplink signal earliest, and the second sending time point is the time point for the useful signal that the UE is sent in the current uplink signal.Here useful signal refers to that UE is actually subjected to base station transmission Effective information does not include filling information.The UE that second sending time point can be understood as base station identification sends the time point of current uplink signal, it is likely that being not the UE practical time point for sending the current uplink signal.

It should be noted that the earliest time point for sending current uplink signal, refers to that UE allows to send the earliest time point of current uplink signal.UE does not allow to send uplink signal before the first sending time point CCA success yet, but until the first sending time point sends current uplink signal or sends current uplink signal between the first sending time point and the second sending time point.Here the second sending time o'clock is the sending time point for the useful signal that UE is sent in the current uplink signal after the first sending time point.

Specifically, the first sending time point is that base station determines in candidate sending time point set for user equipment (UE).The first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points.Candidate's sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.

Specifically, UE can carry out the random back (backoff counter subtracts) of CCA in CCA time window, and detecting in so-called CCA time window successfully can be random back initial value and be kept to zero.The channel sense of UE a length of one shot when CCA time window can also carry out, interior detect of so-called CCA time window are successfully not higher than energy threshold to listen to signal energy in CCA time window.The first time point of pre-configuration can be detect in the CCA time window successfully after time point for being sent after progress self-defer immediately, the second time point being pre-configured can be detect in the CCA time window successfully after time point for being sent after progress padding immediately, in short, first time point is different with the second time point.

Here, above-mentioned " sending immediately " is done to illustrate, if the random back of CCA successful time point, on subframe (or symbol) boundary, so-called send immediately sends since this sub-frame boundary (or character boundary)；If the random back of CCA successful time point on subframe (or symbol) boundary, is not also obtaining by sending since retracting (self-defer) waits until this sub-frame boundary (or character boundary).

Here the first preset duration, the second preset duration can be relative time, such as: initial time is the 1st symbol of the n-th subframe, Shi Changwei 0.5us.It is also possible to absolute time, such as: initial time is the 1st symbol of the n-th subframe, and finish time is the 5th symbol of the n-th subframe.UE can carry out padding (sending filling signal to base station) in first preset duration, the second preset duration, can also carry out self-defer (from retracting) operation, can listen to channel, can not also listen to channel.In addition, it is necessary to illustrate, the padding of certain time length can be carried out in the random back off procedure of CCA, be also possible to complete continual random back off procedure.First preset duration, the second preset duration can be fixed time interval, for example, the predefined fixed time interval that 16us, 25us or other UE are obtained.It is also possible to variable time interval, for example, according to type of service difference, time interval can be m (us)+N*slot (us), wherein m is a fixed time interval, depending on signal processing time and time delay is sent and received signal, for example, 16us.N is non-negative integer, and the value of different type of service N can be different.Slot is a time interval basic unit, for example, 9us.

First preset duration, the second preset duration (time interval) can be what base station side defined, are notified by base station or are indicated to UE's.Or UE oneself definition.It to sub-frame boundary (or character boundary or boundary of time slot) is the time interval at the time of channel reservation end of message or at the time of the notice UE channel reservation end of message of base station.

Since base station record has the LBT parameter (such as: random back initial value, random back range value, random back initial time) of each scheduled UE, therefore base station can determine that each scheduled UE completes the time point of CCA random back (i.e. random back initial value is kept to zero), can determine that some completes the later UE of CCA random back is with reference to UE, the time point of CCA random back is completed with reference to UE with reference to this when determining first time point, so that the first sending time point completes the time point of CCA random back as close to this with reference to UE.

302, the base station sends notice letter modern instruction the first sending time point and the second sending time point to UE, or sends modern instruction the first sending time point of notice letter to UE.

In this way, sending the UE according to the first sending time point and described second Time point sends the current uplink signal.It should be noted that if base station only indicates the first sending time point by notice letter the present, UE can believe the first sending time point of modern acquisition according to notice, in addition, UE oneself can determine the second sending time point, time point sanctified by usage in LTE system can be determined as to the second sending time point, such as: sub-frame boundary, character boundary.

Wherein, UE can be the UE dispatched by eNB (the i.e. described base station).Specifically, eNB can believe the UE of the UL signals (uplink signal) to be sent such as modern (UL grant) scheduling by uplink scheduling.UL grant can be carried on unauthorized carrier wave and/or authorization carrier wave.

303, UE obtains the first sending time point and the second sending time point.

Specifically, the notice that the UE receives that base station is sent believes the present, believes that modern obtain states the first sending time point and/or the second sending time point according to the notice.

Here, can be, notice letter is modern to carry the first sending time point and/or the second sending time point, has notice letter modern described in UE parsing, obtains the first sending time point and/or the second sending time point；Alternatively, the instruction information of modern the first sending time of the instruction point carried of notice letter and/or the second sending time point, UE notifies letter is modern to carry the first sending time point and/or the second sending time point according to the instruction acquisition of information.

Alternatively, base station indicates the first sending time point, UE itself determines the second sending time point.That is, the second sending time point can be what UE was obtained according to the instruction of base station, it is also possible to time point sanctified by usage in LTE system, such as: sub-frame boundary, character boundary.Exemplary, the first sending time point is not sub-frame boundary in subframe n, can determine that the boundary of subframe n is the second sending time point.

With reference to Fig. 4, the first sending time point sends time point of the current uplink signal after can be the random back success (backoff counter reduces to zero) of CCA immediately, such as the corresponding first sending time point of UE1 in Fig. 4.The time point for being also possible to send the current uplink signal immediately after executing one shot can also be without channel sense if the corresponding first sending time point of UE2, UE2 can carry out channel sense during one shot in Fig. 4.It is also possible to CCA for a period of time, carries out a period of time padding, is then carrying out CCA for a period of time until the time point of the current uplink signal is sent after the random back success of CCA immediately, such as the corresponding first sending time point of UE3 in Fig. 4.It can also Be CCA random back success after carry out the time point for sending the current uplink signal after the padding (or self-defer) of the second preset duration immediately, such as the corresponding first sending time point of UE4 in Fig. 4.

304, base station sends rollback initial value or competition window information to UE.

The base station sends competition window (Contention Window, CW) information to the UE, so that the UE determines rollback initial value according to the competition window information, carries out the random back of idle channel assessment CCA；The competition window information is used to indicate the rollback initial value, and UE can determine a rollback initial value according to competition window information.Exemplary, base station and UE maintain identical competition window, and competition window includes four rollback initial values, it is indicated respectively with 00,01,10,11, wherein 00,01,10,11 be competition window information, if base station indicates that 00, UE can determine its corresponding rollback initial value according to 00.

Or, the base station sends the rollback initial value to the UE, so that the UE is according to the random back of rollback initial value progress idle channel assessment CCA.

Certainly, base station can also send competition window information to UE, and UE is according to a rollback initial value determining in multiple rollback initial values that the competition window information that base station is sent includes.

In addition, other than instruction UE rollback initial value or competition window information, it also can indicate that initial Backoff time length Q, UE determines an initial duration N (N=rollback initial value × time span Q) according to rollback initial value and Backoff time length Q, when UE carries out the random back of CCA, initial duration N subtracts Q, and so on, until Backoff time length (backoff counter) is kept to zero.Backoff time length Q, can be it is predefined, for example, 1us, 9us etc. or variable time length, for example, time span is configurable to different values according to different types of service.

305, UE carries out the random back of CCA according to rollback initial value.

Wherein, UE can receive the rollback initial value of base station transmission and carry out the random back of CCA according to the rollback initial value.Alternatively, determining rollback initial value according to the competition window information that base station is sent.

UE detects that rollback initial value is then subtracted a numerical value for the free time by stand-by channel, when detecting that stand-by channel is idle again, then subtracts the numerical value, until rollback initial value is kept to zero (i.e. the random back success of CCA).

306, the UE determines the practical sending time point of the current uplink signal according to the result of the first sending time point and the second sending time point and the random back.

Wherein, at so-called practical sending time point, that is, UE practical time point for carrying out uplink transmission, the time point of the useful signal in current uplink signal can be sent earlier than UE.

Specifically, if the random back of the CCA successful time point is not later than the first sending time point, UE if, determines that the practical sending time point is no earlier than the first sending time point.That is, even if the random back success of UE CCA before the first sending time point, UE are also required at least wait until that the first sending time point just starts to send the current uplink signal.Preferably, practical sending time point is the first sending time point.

Or, if the random back of the CCA successful time point is later than the first sending time point and is not later than the second sending time point, UE if, determines that the practical sending time point is no earlier than the random back successful time point and is not later than the second sending time point.That is, then the practical sending time point of UE is at random back successful time point between the second sending time point when UE completes the random back (rollback initial value is kept to zero) of CCA between the first sending time point and the second sending time point.Preferably, practical sending time point is the second sending time point.

Exemplary, with reference to Fig. 5, practical sending time point C is after the first sending time point A, or between the first sending time point A and the second sending time point B.

307, UE is begun through described to the stand-by up channel transmission current uplink signal from the practical sending time point.

308, base station receives the current uplink signal that the UE is sent since the second sending time point.

Here, although UE might not send the current uplink signal in the second sending time point, base station is bound to start to receive uplink signal in the second sending time point.

In existing LTE, UE sends the time point of uplink signal (i.e. UL signal), and the time of UL scheduling information (the i.e. UL grant) instruction of the UE is dispatched depending on base station.Exemplary, the base station n moment sends UL scheduling information, and UE then sends UL signal at the n+k moment. Wherein, for a certain communication pattern, k value is fixed and invariable.Such as: for FDD, k=4.Alternatively, the value of k is related with sub-frame configuration, fixed once detecing configuration certainly, then k value is fixed.

In a preferred embodiment of the invention, base station sends the end time point of the current uplink signal to the UE.Certainly, UE can receive the end time point for the current uplink signal that the base station is sent.

In addition, the UE obtains the end time point of the current uplink signal according to the first sending time point.It can be base station and indicate the transmission duration of current uplink signal, the transmission duration that base station is indicated according to practical sending time point and base station, so that it may determine the finish time of current uplink signal.

In a preferred embodiment of the invention, if the UE determines the practical sending time point earlier than the second sending time point, the UE sends the useful signal in the current uplink signal then in the practical sending time point to the filling signal sent in the current uplink signal between the second sending time point since the second sending time point.

Here the content of filling signal is not limited, it can be sequence, reference signal, data information etc., why between practical sending time point and the second sending time point filling signal is sent, it is to indicate determining practical sending time o'clock before the second sending time point according to base station due to UE, result in order not to carry out CCA to other UE interferes, UE needs the busy channel since practical sending time point, but practical sending time point is different from the second sending time point herein, therefore useful signal cannot be sent, it can be by sending filling signal padding come busy channel.

In addition, it is necessary to explanation, UE can send above-mentioned padding by reserved wireless channel.The initial time of reserved wireless channel, can be sub-frame boundary, the boundary time slot (slot), character boundary, arbitrary time location in a subframe.For example, after the success of UE random back, at the time of UE sends padding by reserved wireless channel immediately.The finish time of reserved radio channel information, it can be sub-frame boundary, the boundary time slot (slot), character boundary, any time position of subframe.

UE can be obtained by reserving the information that the padding that wireless channel is sent includes by following methods: UE is (such as: UL grant), and/or semi-static by the modern notice of dynamic letter that base station is sent, and static state letter modern (such as broadcast letter is modern, wireless heterogeneous networks believe the present RRC) obtains the information.

The transmission method of uplink signal provided in an embodiment of the present invention, base station can determine that UE can send the first sending time point of current uplink signal earliest, and UE sends the second sending time point of the useful signal in current uplink signal, and the first sending time point and/or the second sending time point are indicated to UE, so that UE determines the practical sending time point of current uplink signal according to the first sending time point and the second sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point close time point that CCA random back is completed with reference to UE determined due to base station, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point Also it is proximate to complete the time point of CCA random back with reference to UE, can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

Embodiment 3:

The present invention also provides a kind of transmission methods of uplink signal, as shown in fig. 6, the described method comprises the following steps:

S301, base station determine the first sending time point.

S302, the base station send modern instruction the first sending time point of notice letter to UE.

S303, UE obtain the first sending time point.

S304, UE carry out CCA in the first CCA time window before the first sending time point.

The signal energy that S305, the UE are detected in the first CCA time window is not higher than energy threshold, and the UE then determines that the practical sending time point is the first sending time point.

The first CCA time window, the time interval before can be the first sending time point, carries out energy measurement in the CCA time window.If the energy that the UE is measured in the first CCA time window is higher than energy threshold, the UE can carry out the energy measurement in CCA time window to any point-in-time between the second sending time point in the first sending time o'clock again, i.e. progress step S306.

If the signal energy that S306, UE are detected in the first CCA time window is higher than the energy threshold, UE carries out CCA in the 2nd CCA time window before third sending time point；If the signal energy that UE is detected in the 2nd CCA time window is not higher than the energy threshold, it is determined that the practical sending time point is the third sending time point.

Wherein, the third sending time point is after the first sending time point and before the second sending time point.Here, the second sending time point can be base station pass through in step s 302 notice letter the present be indicated to UE, be also possible to the sub-frame boundary (or character boundary) etc. that UE is determined before step S306.

Alternatively, the UE measures energy in the CCA time window before first time point to each symbol between the second time point, and simultaneously in first time point and the second time point Between other times do not do CCA process.Until the energy measured in CCA time window is not higher than energy threshold, then real data sending time is no earlier than the second sending time point.

S307, UE begin through described to the stand-by up channel transmission current uplink signal from the practical sending time point.

S308, base station receive the current uplink signal that the UE is sent since the second sending time point.

Wherein, the second sending time point is that the UE that base station determines sends the time point of the useful signal in the current uplink signal.Here useful signal refers to that UE is actually subjected to the effective information transmitted to base station, does not include filling information.The UE that second sending time point can be understood as base station identification sends the time point of current uplink signal, it is likely that being not the UE practical time point for sending the current uplink signal.

It should be noted that, UE provided in this embodiment carries out the implementation of channel measurement detection signal energy in the CCA time window, applied to the scene that the current uplink signal is sent in current time burst window, the time burst window includes the transmission of downlink signal and the uplink signal.Time burst outside window, then be not suitable for.

The transmission method of uplink signal provided in an embodiment of the present invention, base station can determine that UE can send the first sending time point of current uplink signal earliest, and the first sending time point and/or the second sending time point are indicated to UE, so that UE determines the practical sending time point of current uplink signal according to the first sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point determined due to base station is close to the time point (i.e. the acquisition channel right to use sends time point of uplink signal at once) for completing CCA random back with reference to UE, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE as far as possible while carry out uplink signal hair It send, reduces interfering with each other between UE.

Embodiment 4:

The embodiment of the present invention provides a kind of base station 40, as shown in fig. 7, the base station 40 comprises determining that unit 401, transmission unit 402 and receiving unit 403.

Determination unit 401, for being user equipment (UE) in candidate sending time point set Determine the first sending time point；The first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points.

The determination unit 401 is also used to, and determines the second sending time point；The second sending time point is the sending time point of the useful signal in the current uplink signal.

Transmission unit 402, for sending to the UE, notice letter is modern to indicate the first sending time point and the second sending time point, or modern instruction the first sending time point of notice letter is sent to the UE, so that the UE sends the current uplink signal according to the first sending time point and the second sending time point.

Receiving unit 403, the current uplink signal sent for receiving the UE since the second sending time point.

The transmission unit 402 is also used to, after Xiang Suoshu UE sends notice letter the present, to The UE sends competition window information, so that the UE determines rollback initial value according to the competition window information, carries out the random back of idle channel assessment CCA；The competition window information is used to indicate the rollback initial value.

Or, sending the rollback initial value to the UE, so that the UE is according to the rollback initial value, the random back of idle channel assessment CCA is carried out.

The transmission unit 402 is also used to, and Xiang Suoshu UE sends the end time point of the current uplink signal.

It should be noted that the transmission unit 402 in the present embodiment can be the transmitter 102 of base station；Receiving unit 403 can be the receiver 103 of base station, and transmitter 102 can also integrate to form transceiver with receiver 103.In addition.Determination unit 401 can be the processor 101 individually set up, also it can integrate and realized in some processor of base station, in addition it is also possible to which the form of program code is stored in the memory 104 of base station, the function of unit 401 determined above is called by some processor of base station and executed.Processor described here can be central processing unit (Central Processing Unit, CPU) or specific integrated circuit (Application Specific Integrated Circuit, ASIC).

Base station provided in an embodiment of the present invention, it can determine that UE can send the first sending time point of current uplink signal earliest, and UE sends the second sending time point of the useful signal in current uplink signal, and the first sending time point and/or the second sending time point are indicated to UE, so that UE determines the practical sending time point of current uplink signal according to the first sending time point and the second sending time point, that is UE adjusts practical sending time point according to the instruction of base station, in this way, the the first sending time point close time point that CCA random back is completed with reference to UE determined due to base station, therefore the practical sending time point for the current uplink signal that UE is determined according to the first sending time point and the second sending time point is also proximate to complete the time point of CCA random back with reference to UE, it can thus indicate each UE It carries out uplink signal transmission simultaneously as far as possible, reduces interfering with each other between UE.

Embodiment 5:

The embodiment of the present invention provides a kind of UE50, as shown in figure 8, the UE50 includes: acquiring unit 501, channel assessment unit 502, determination unit 503 and transmission unit 504.

Acquiring unit 501, for obtaining the first sending time point, the first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points.

Channel evaluates and tests unit 502, for executing idle channel evaluation and test CCA operation to stand-by up channel.

Determination unit 503, for determining the practical sending time point of the current uplink signal according to the result of the first sending time point and CCA operation.

Transmission unit 504, it is described to the stand-by up channel transmission current uplink signal for being begun through from the practical sending time point.

The acquiring unit 501 is also used to, and before channel assessment unit executes CCA operation, obtains the second sending time point, the second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point.

The channel assessment unit 502 is specifically used for, and determines rollback initial value, and the random back of CCA is carried out according to the rollback initial value；

The determination unit 503 is specifically used for, and the practical sending time point of the current uplink signal is determined according to the result of the first sending time point and the second sending time point and the random back.

The determination unit 503 is specifically used for, if the random back of the CCA successful time point is not later than the first sending time point, it is determined that the practical sending time point is no earlier than the first sending time point；

As shown in figure 9, the UE50 further includes the first receiving unit 505,

First receiving unit 505 is used for, and receives the competition window information that the base station is sent.

The channel assessment unit 502 is specifically used for, and determines the rollback initial value according to the competition window information；The competition window information is used to indicate the rollback initial value；

Or, the first receiving unit 505 receives the rollback initial value that the base station is sent, the received rollback initial value of the first receiving unit 505 is determined as the rollback initial value by the channel assessment unit 502；

Or, channel assessment unit 502 obtains competition window information, the rollback initial value is determined according to the competition window information.

As shown in Figure 10, the UE50 further includes the second receiving unit 506.

Second receiving unit 506 is used for, and is received the notice that base station is sent and is believed the present；

The acquiring unit 501 is specifically used for, and states the first sending time point and the second sending time point according to received modern obtain of notice letter of second receiving unit 506；

The transmission unit 504 is also used to, if the determination unit 503 determines the practical sending time point earlier than the second sending time point, the useful signal in the current uplink signal is then sent since the second sending time point to the filling signal sent in the current uplink signal between the second sending time point in the practical sending time point.

The channel assessment unit 502 is specifically used for, and carries out CCA in the first CCA time window before the first sending time point.

The determination unit 503 is specifically used for, if the signal energy that channel assessment unit detects in the first CCA time window is not higher than energy threshold, it is determined that institute Stating practical sending time point is the first sending time point.

The channel assessment unit 502 is also used to, if the signal energy detected in the first CCA time window is higher than the energy threshold, carries out CCA in the 2nd CCA time window before third sending time point；The third sending time point is after the first sending time point and before the second sending time point.

The determination unit 503 is specifically used for, if the signal energy that channel assessment unit detects in the 2nd CCA time window is not higher than the energy threshold, it is determined that the practical sending time point is the third sending time point.

It should be noted that the third sending time point belongs to the candidate sending time point set.In addition, the uplink signal, in current time burst window, the unexpected time window includes the transmission of downlink signal and the uplink signal.

As shown in figure 11, the UE50 further includes third receiving unit 507.

The third receiving unit 507 is used for, and receives the end time point for the current uplink signal that the base station is sent；Or,

The acquiring unit 501 is also used to, and the end time point of the current uplink signal is obtained according to the first sending time point.

It should be noted that the transmission unit 504 in the present embodiment can be the transmitter 203 of UE, the first receiving unit 505, the second receiving unit 506, third receiving unit 507 can be the receiver 202 of UE.In addition.Acquiring unit 501, determination unit 503 and channel assessment unit 502 can be the processor 201 individually set up, also it can integrate and realized in some processor of UE, furthermore, it can also be stored in the form of program code in the memory 204 of UE, be called by some processor of UE and executed the function of the above acquiring unit 501, determination unit 503 and channel assessment unit 502.Processor described here can be a central processing unit or specific integrated circuit.

UE provided in an embodiment of the present invention, available earliest the first sending time point for sending current uplink signal, the practical sending time point of current uplink signal is determined according to the result that the first sending time point and CCA are operated, that is UE adjusts practical sending time point according to the instruction of base station, in this way, due to the first sending time point close time point for completing CCA random back with reference to UE that base station determines, the practical sending time point for the current uplink signal that UE is determined according to the first sending time point is also proximate to reference to UE completion CCA random back Time point can thus indicate each UE as far as possible while carry out uplink signal transmission, reduce interfering with each other between UE.

Through the above description of the embodiments, it is apparent to those skilled in the art that, for convenience and simplicity of description, only the example of the division of the above functional modules, in practical application, it can according to need and be completed by different functional modules above-mentioned function distribution, i.e., the internal structure of device is divided into different functional modules, to complete all or part of the functions described above.The specific work process of the device of foregoing description, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

The unit as illustrated by the separation member may or may not be physically separated, and component shown as a unit can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over multiple and different places.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.In addition, the functional units in various embodiments of the present invention may be integrated into one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a read/write memory medium.Based on this understanding, substantially all or part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products technical solution of the present invention in other words, the software product is stored in a storage medium, it uses including some instructions so that an equipment (can be single-chip microcontroller, chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.

It is described above; only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and anyone skilled in the art is in the technical scope disclosed by the present invention; it can easily think of the change or the replacement, should be covered by the protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A kind of transmission method of uplink signal characterized by comprising

Base station determines the first sending time point in candidate sending time point set for user equipment (UE)；The first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points；

The base station determines the second sending time point；The second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point；

The base station sends notice signaling to the UE and indicates the first sending time point and the second sending time point, or sends notice signaling to the UE and indicate the first sending time point；

The base station receives the current uplink signal that the UE is sent since the second sending time point；

Wherein, the candidate sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.
The method according to claim 1, wherein after the base station sends notice signaling to the UE, the method also includes:

The base station sends competition window information to the UE, and the competition window information is used to indicate rollback initial value, and the rollback initial value is used for the random back of idle channel assessment；

Or, the base station sends rollback initial value to the UE, the rollback initial value is used for the random back of idle channel assessment.
Method according to claim 1 or 2, which is characterized in that the method also includes:

The base station sends the end time point of the current uplink signal to the UE.
A kind of transmission method of uplink signal characterized by comprising

User equipment (UE) obtains the first sending time point, and the first sending time point is the time point that the UE sends current uplink signal earliest；The first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points；

The UE executes idle channel evaluation and test CCA operation；

The UE determines the practical sending time point of the current uplink signal according to the result that the first sending time point and the CCA are operated；

The UE sends the current uplink signal since the practical sending time point；

Wherein, the candidate sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.
According to the method described in claim 4, it is characterized in that, the UE to stand-by up channel execute CCA operation before, the method also includes:

The UE obtains the second sending time point, and the second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point.
According to the method described in claim 5, it is characterized in that, the UE specifically includes the execution CCA operation of stand-by up channel:

The UE determines rollback initial value, and the random back of CCA is carried out according to the rollback initial value；

The UE determines the practical sending time point of the current uplink signal according to the result that the first sending time point and the CCA are operated, comprising:

The UE determines the practical sending time point of the current uplink signal according to the result of the first sending time point and the second sending time point and the random back.
Method according to claim 5 or 6, which is characterized in that the UE determines that the practical sending time point of the current uplink signal specifically includes according to the result of the first sending time point and the second sending time point and the random back:

If the random back of the CCA successful time point is not later than the first sending time point, UE if, determines that the practical sending time point is no earlier than the first sending time point；

Or, if the random back of the CCA successful time point is later than the first sending time point and is not later than the second sending time point, UE if, determines that the practical sending time point is no earlier than the random back successful time point and is not later than the second sending time point.
According to the described in any item methods of claim 5-7, which is characterized in that the UE determines that rollback initial value specifically includes:

The UE receives the competition window information that the base station is sent, and determines the rollback initial value according to the competition window information；The competition window information is used to indicate the rollback initial value；

Or, the UE receives the rollback initial value that the base station is sent；

Or, the UE obtains competition window information, the rollback initial value is determined according to the competition window information.
According to the described in any item methods of claim 4-8, which is characterized in that the UE obtains the first sending time point and specifically includes:

The UE receives the notice signaling that base station is sent, and states the first sending time point and the second sending time point according to notice signaling acquisition；

Or, the UE receives the notice signaling that base station is sent, the first sending time point is stated according to notice signaling acquisition.
The method according to the description of claim 7 is characterized in that the method also includes:

If the UE determines the practical sending time point earlier than the second sending time point, the UE sends the useful signal in the current uplink signal then in the practical sending time point to the filling signal sent in the current uplink signal between the second sending time point since the second sending time point.
According to the method described in claim 5, it is characterized in that, UE execution CCA operation specifically includes:

The UE is carried out in the first CCA time window before the first sending time point CCA；

The UE determines the practical sending time point of the current uplink signal according to the result that the first sending time point and the CCA are operated, comprising:

If the signal energy that the UE is detected in the first CCA time window is not higher than energy threshold, UE if, determines the practical sending time point for the first sending time point.
According to the method for claim 11, which is characterized in that the method also includes:

If the signal energy that the UE is detected in the first CCA time window is higher than the energy threshold, the UE carries out CCA in the 2nd CCA time window before third sending time point；The third sending time point is after the first sending time point and before the second sending time point；

If the signal energy that the UE is detected in the 2nd CCA time window is not higher than the energy threshold, the UE determines that the practical sending time point is the third sending time point.
According to the method for claim 12, which is characterized in that the third sending time point belongs to the candidate sending time point set.
The described in any item methods of 1-13 according to claim 1, which is characterized in that

For the uplink signal in current time burst window, the unexpected time window includes the transmission of downlink signal and the uplink signal.
According to the described in any item methods of claim 4-14, which is characterized in that the method also includes:

The UE receives the end time point for the current uplink signal that the base station is sent；Or,

The UE obtains the end time point of the current uplink signal according to the first sending time point.
A kind of base station characterized by comprising

Determination unit, for being that user equipment (UE) determines the first sending time point in candidate sending time point set；The first sending time point is that the UE sends current uplink letter earliest Number time point, the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points；

The determination unit is also used to, and determines the second sending time point；The second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point；

Transmission unit indicates the first sending time point and the second sending time point for sending notice signaling to the UE, or sends notice signaling to the UE and indicate the first sending time point；

Receiving unit, the current uplink signal sent for receiving the UE since the second sending time point；

Wherein, the candidate sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.
Base station according to claim 16, it is characterized in that, the transmission unit is also used to, after sending notice signaling to the UE, competition window information is sent to the UE, the competition window information is used to indicate rollback initial value, and the rollback initial value is used for the random back of idle channel assessment；

Or, sending the rollback initial value to the UE, the competition window information is used to indicate rollback initial value, and the rollback initial value is used for the random back of idle channel assessment.
Base station according to claim 16 or 17, which is characterized in that the transmission unit is also used to, and Xiang Suoshu UE sends the end time point of the current uplink signal.
A kind of user equipment (UE) characterized by comprising

Acquiring unit, for obtaining the first sending time point, the first sending time point is the time point that the UE sends current uplink signal earliest, and the first sending time point belongs to candidate sending time point set, and candidate's sending time point set includes 1 candidate sending time points；

Channel evaluates and tests unit, for executing idle channel evaluation and test CCA behaviour to stand-by up channel Make；

Determination unit, for determining the practical sending time point of the current uplink signal according to the result of the first sending time point and CCA operation；

Transmission unit, it is described to the stand-by up channel transmission current uplink signal for being begun through from the practical sending time point；

Wherein, the candidate sending time point be the time point for sending the current uplink signal after detect successfully in CCA time window immediately, the CCA time window is interior detect successfully after send the current uplink signal pre-configuration first time point and CCA time window is interior detect successfully after send the current uplink moment pre-configuration the second time point in any one time point.
UE according to claim 19, it is characterized in that, the acquiring unit is also used to, before channel assessment unit executes CCA operation, the second sending time point is obtained, the second sending time point is the sending time point of the useful signal in the current uplink signal；The second sending time point is no earlier than the first sending time point.
UE according to claim 20, which is characterized in that the channel assessment unit is specifically used for, and determines rollback initial value, and the random back of CCA is carried out according to the rollback initial value；

The determination unit is specifically used for, and the practical sending time point of the current uplink signal is determined according to the result of the first sending time point and the second sending time point and the random back.
The UE according to claim 20 or 21, it is characterized in that, the determination unit is specifically used for, if the random back of the CCA successful time point is not later than the first sending time point, it is determined that the practical sending time point is no earlier than the first sending time point；

Or, if the random back of the CCA successful time point is later than the first sending time point and is not later than the second sending time point, it is determined that the practical sending time point is no earlier than the random back successful time point and is not later than the second sending time point.
According to the described in any item UE of claim 20-22, which is characterized in that it further include the first receiving unit,

First receiving unit is used for, and receives the competition window information that the base station is sent；

The channel assessment unit is specifically used for, and determines the rollback initial value according to the competition window information；The competition window information is used to indicate the rollback initial value；

Or, receiving the rollback initial value that the base station is sent；

Or, obtaining competition window information, the rollback initial value is determined according to the competition window information.
The described in any item UE of 9-23 according to claim 1, which is characterized in that it further include the second receiving unit,

Second receiving unit is used for, and receives the notice signaling that base station is sent；

The acquiring unit is specifically used for, and states the first sending time point and the second sending time point according to the received notice signaling acquisition of second receiving unit；

Or, stating the first sending time point according to notice signaling acquisition.
The described in any item UE of 9-24 according to claim 1, it is characterized in that, the transmission unit is also used to, if the determination unit determines the practical sending time point earlier than the second sending time point, the useful signal in the current uplink signal is then sent since the second sending time point to the filling signal sent in the current uplink signal between the second sending time point in the practical sending time point.
UE according to claim 20, which is characterized in that the channel assessment unit is specifically used for, and carries out CCA in the first CCA time window before the first sending time point；

The determination unit is specifically used for, if the signal energy that channel assessment unit detects in the first CCA time window is not higher than energy threshold, it is determined that the practical sending time point is the first sending time point.
UE according to claim 26, it is characterized in that, the channel assessment unit is also used to, if the signal energy detected in the first CCA time window is higher than the energy threshold, carries out CCA in the 2nd CCA time window before third sending time point；The third sending time point is after the first sending time point and before the second sending time point；

The determination unit is specifically used for, if the channel is tested and assessed, unit is in the 2nd CCA The signal energy detected in time window is not higher than the energy threshold, it is determined that the practical sending time point is the third sending time point.
UE according to claim 27, which is characterized in that the third sending time point belongs to the candidate sending time point set.
According to the described in any item UE of claim 26-28, which is characterized in that for the uplink signal in current time burst window, the unexpected time window includes the transmission of downlink signal and the uplink signal.
The described in any item UE of 9-29 according to claim 1, which is characterized in that it further include third receiving unit,

The third receiving unit is used for, and receives the end time point for the current uplink signal that the base station is sent；Or,

The acquiring unit is also used to, and the end time point of the current uplink signal is obtained according to the first sending time point.