CN104717687A

CN104717687A - Adjustment method and system for channel occupation probability and equipment

Info

Publication number: CN104717687A
Application number: CN201510167205.3A
Authority: CN
Inventors: 李明菊; 朱亚军; 张云飞; 何成名
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2015-04-09
Filing date: 2015-04-09
Publication date: 2015-06-17
Anticipated expiration: 2035-04-09
Also published as: CN104717687B; WO2016161710A1

Abstract

The invention provides an adjustment method for channel occupation probability, an adjustment system for the channel occupation probability and equipment with a base station function. The adjustment method for the channel occupation probability comprises the following steps: adjusting parameter information, corresponding to a signal detection mechanism, of data to be sent according to the data type of the data to be sent of the equipment with the base station function; and adjusting the possibility of occupying a downstream channel of the data to be sent according to the adjusted parameter information, wherein the data type of the data to be sent comprises a found reference signal and/or downstream data. According to the adjustment method for the channel occupation probability, the capability of occupying the channel by an LBT (Listen Before Talk) mechanism for sending a DRS (Discovery Reference Signal) can be improved so that the found reference signal can more easily occupy the channel or at least has the channel occupation probability the same as that of an LBT mechanism for sending common downstream data, so that the power consumption caused by the fact that the reference signal DRS is measured by a terminal, and ell identification, downstream synchronization and time frequency estimation are carried out is reduced, and the accuracy is improved.

Description

The method of adjustment of channel occupancy probabilities, adjustment System and equipment

Technical field

The present invention relates to communication technical field, in particular to adjustment System and a kind of equipment with base station functions of a kind of method of adjustment of channel occupancy probabilities, a kind of channel occupancy probabilities.

Background technology

Along with the sharply increase of message volume, the mandate frequency spectrum of 3GPP is more and more not enough to provide higher network capacity.In order to improve the utilance of frequency spectrum resource further, 3GPP is just discussing how under the help of authorizing frequency spectrum, to use unlicensed spectrum, as 2.4GHz and 5GHz frequency range.The systems such as these unlicensed spectrums current mainly Wi-Fi, bluetooth, radar, medical treatment are in use.

Under normal circumstances, the access technology designed for authorizing frequency range, as LTE (Long TermEvolution, Long Term Evolution) is not suitable for using in unauthorized frequency range, because the requirement that this kind of access technology of LTE is optimized spectrum efficiency and Consumer's Experience is very high.But carrier aggregation (CarrierAggregation, CA) function allows and LTE is deployed in unauthorized frequency range becomes possibility.3GPP proposes the concept of LAA (the auxiliary access of LTE Assisted Access, LTE), authorizes the help of frequency spectrum to use unlicensed spectrum by LTE.And unlicensed spectrum can have two kinds of working methods, one is supplementary descending (SDL, Supplemental Downlink), namely only has downlink transfer subframe; Another kind is tdd mode, has both comprised descending sub frame, sub-frame of uplink.Supplementing descending this situation can only be use (as shown in Figure 1) by carrier aggregation technology.And tdd mode is except can using by carrier aggregation technology, can also uses by DC (Dual Connectivity, doubly-linked leads to), also can independently use.

Compared to Wi-Fi system, the LTE system being operated in unauthorized frequency range has the ability to provide higher spectrum efficiency and larger coverage effect, allows data traffic authorize seamless switching between frequency range and unauthorized frequency range based on same core net simultaneously.Concerning user, this means better broadband experience, higher speed, better stability and mobile facility.

The existing access technology used in unlicensed spectrum, as Wi-Fi, has more weak antijamming capability.In order to avoid interference, rule is avoided in a lot of interference of Wi-Fi system, as CSMA/CD (Carrier Sense Multiple Access/Collision Detection, csma/collision detection method), the general principle of this method is the AP (AccessPoint of Wi-Fi, access point) or terminal transmission signaling or data before, want whether have other AP or other-end around first Monitor detection in sending/receiving signaling or data, if have, then continue to monitor, do not have until listen to; If no, then generate a random number as back off time, in this back off time, if signaling or transfer of data do not detected, so after back off time terminates, AP or terminal can start to send signaling or data.This process as shown in Figure 2.

But, owing to there being good orthogonality to ensure that interference level in LTE network, so the downstream transmission of base station and user need not consider whether have other base stations or other users transmitting data around.If whether have other equipment around also not considering when LTE uses in unauthorized frequency range in the unauthorized frequency range of use, so great interference will be brought to Wi-Fi equipment.As long as because LTE has business just to transmit, without any monitoring rule, so Wi-Fi equipment just can not be transmitted when LTE has business to transmit, can only wait until that LTE business is transmitted, just can detect that channel clear is to carry out transfer of data.

So LTE is when using unauthorized frequency range, one of topmost key point guarantees that LAA (access technology that LTE assisted access, LTE are auxiliary) can coexist with existing access technology (such as WiFi) on fair friendly basis.And in traditional LTE system, do not have the mechanism of LBT (Listen Before Talk, listem-before-talk) to carry out collision free.In order to better coexist with WiFi, LTE needs a kind of LBT mechanism.Like this, if LTE detects channel busy in unlicensed spectrum, then can not take this frequency range, if detect that channel is not busy, just can take.

Based on the problems referred to above, at present, propose a kind of (FBE based on frame structure, Framedbased equipment) LBT mechanism (as shown in Figure 3), left oblique line is CCA (ClearChannel Assessment, clear channel assessment (CCA)) Channel Detection Time, CCA periodicity detection time repeats, if channel idle detected, then busy channel, after Channel holding time reaches maximum channel holding time, there is an idle time, in the idle time, sending point does not send signal and data, so that channel is seized in other sending point.After the idle time, occur again CCA detection time, if channel busy detected, then not busy channel, until again detect channel when the CCA in next cycle occurs detection time.Certainly, Channel Detection Time also belongs to the idle time, and idle duration must be greater than 5% of the maximum holding time of channel.The Idle time adds channel occupancy maximum time and cycle.

At present, the LBT mechanism that also proposed a kind of (LBE, Load based equipment) based on load is illustrated in fig. 4 shown below: the LBT mechanism based on LBE is aperiodic, as long as business arrives, then trigger CCA to detect, if CCA detects idle, then send signaling or data at once; If channel busy detected, then get a random number N, the span of N is 1 to q (i.e. competition window length), and the span of q is 4 to 32.Fig. 4 shows the situation of q=16, and now, when channel idle being detected, the maximum holding time of channel is (13/32) x q=6.5ms.After 6.5ms, taking extended CCA (Channel Detection Time of prolongation) mechanism, is namely also random value N, the scope of N is 1 to 16, if value is 8, then represent that each CCA will detect channel detection time in ensuing continuous print CCA detection time, if channel idle detected, then N-1, if channel busy detected, then N is constant, when N is 0, send signaling or data.

In addition, in LAA for RRM (Radio Resource Management, RRM) reference signal of measurement, cell identification, down-going synchronous, time-frequency estimation etc. has two kinds of modes to realize: one is short control signaling (in short-term control signal), the requirement of this mode demand fulfillment to have the time of 5% sending control signal in short-term, namely 2.5ms in 50ms.Another kind sends aperiodic DRS (Discovery Reference Signal, find reference signal), because send the time that DRS need take 6ms, if and also send when channel busy being detected, larger interference is brought by giving other system, so if send DRS, just can only send when channel idle being detected, so DRS is exactly aperiodic.

In addition, because no matter terminal is send data or receive data, all must realize cell identification, down-going synchronous, time-frequency estimation etc. according to the downlink reference signal (i.e. DRS signal) of base station in advance, therefore, when DRS could must send in the Channel Detection free time, some LAA communities are in order to be measured by the UE of adjacent cell, need to send even without data service, LBT Channel Detection also will be carried out in these LAA communities, and when channel idle being detected, sends DRS.But, if the time that same frequency Shang LAA community sends reference signal DRS is too random, terminal is in order to measure adjacent cell, need to consume more power, particularly when different-frequency measure, may not rob due to adjacent cell and account for channel, can not DRS be sent, and the reference signal DRS of terminal adjacent cell when measuring interval measurement gap be can't detect.And, if LAA zone leader's time can not send reference signal DRS, terminal accuracy of measurement can be caused lower.So when how to ensure to send reference signal DRS, robbing of larger probability channel can be accounted for?

Therefore, how in the process of Channel Detection, be no matter use based on frame structure LBT mechanism or use LBT mechanism based on load, all can improve the ability that the LBT mechanism sending DRS seizes channel, the LBT mechanism making it comparatively send generic downlink data is more easily robbed to account for channel or at least have identical channel with the LBT mechanism sending generic downlink data and is seized probability, reducing terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy, become problem demanding prompt solution.

Summary of the invention

The present invention is just based on the problems referred to above, propose a kind of new technical scheme, make in the process of Channel Detection, no matter send DRS LBT mechanism and send the LBT mechanism of common transmission downlink data be based on frame structure LBT mechanism or use the LBT based on load machine-processed, all can improve the ability that the LBT mechanism sending DRS seizes channel, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, thus make the easier busy channel of discovery reference signal or at least with the LBT mechanism sending generic downlink data, there is identical channel to seize probability, and then realize reducing terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy.

In view of this, an aspect of of the present present invention proposes a kind of method of adjustment of channel occupancy probabilities, for having the equipment of base station functions, comprise: according to the described data type with the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent; According to the described parameter information after adjustment, adjust the probability that described data to be sent take down channel, wherein, the data type of described data to be sent comprises: find reference signal and/or downlink data.

In this technical scheme, data to be sent i.e. these data to be sent by basis with the equipment of base station functions find reference signal or downlink data, adjust the parameters information of LBT mechanism corresponding to data to be sent (i.e. Channel Detection mechanism), make to find that reference signal and the mechanism of the LBT corresponding to downlink data use identical or different parameter information, thus the probability realizing taking data to be sent down channel adjusts, the ability making the LBT mechanism sending DRS seize channel is improved, the LBT mechanism making the LBT of transmission DRS signal mechanism comparatively send generic downlink data is more easily robbed and is accounted for channel, or at least with the LBT mechanism sending generic downlink data, there is identical channel and occupy probability, thus make the easier busy channel of discovery reference signal or at least with generic downlink data, there is identical channel occupation probability, and then realize sending DRS signal in time, to reduce terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy, certainly, the LBT mechanism sending DRS and the LBT mechanism sending generic downlink data can be also can be machine-processed based on the LBT of load based on the LBT mechanism of frame structure.In addition, the microcell base station etc. that the equipment with base station functions is comprised base station, realized by communication equipment (as smart mobile phone etc.).

In technique scheme, preferably, there is described in described basis the data type of the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent, specifically comprise: according to the described data type with the data to be sent of the equipment of base station functions, adjust following at least one parameter or its combination: the Channel Detection Time granularity of the Channel Detection mechanism corresponding to described data to be sent, the maximum channel holding time of the Channel Detection mechanism corresponding to described data to be sent, the competition window length of the Channel Detection Time of the prolongation used when the described equipment use with base station functions sends described data to be sent based on the Channel Detection mechanism of load, Channel Detection mechanism corresponding to described data to be sent use for judging the signal strength threshold that described down channel is whether idle.

In this technical scheme, by the parameters information in the LBT mechanism corresponding to adjustment discovery reference signal and downlink data, the ability that the LBT mechanism sending DRS seizes channel can be improved, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, thus make the easier busy channel of discovery reference signal, or at least there is with generic downlink data identical channel occupation probability so reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

In technique scheme, preferably, described Channel Detection mechanism comprises: the first Channel Detection mechanism and second channel testing mechanism, wherein, when sending described discovery reference signal, using described first Channel Detection mechanism to detect described down channel, when sending described downlink data, using described second channel testing mechanism to detect described down channel.

In this technical scheme, send and find that reference signal is with when sending downlink data, the first Channel Detection mechanism and second channel testing mechanism is used to detect down channel respectively, and the first Channel Detection mechanism and second channel testing mechanism can be the same or different, such as: can be all the LBT mechanism based on frame structure (or based on load), but parameter is wherein different, the LBT mechanism based on frame structure and the LBT mechanism based on load also can be respectively.

In technique scheme, preferably, by the parameter information of the Channel Detection mechanism corresponding to data to be sent described in following process adjusting, be more than or equal to the probability making described discovery reference signal take described down channel the probability that described second channel testing mechanism takies described down channel: the first Channel Detection Time granularity of described first Channel Detection mechanism is adjusted to second channel granularity detection time being less than or equal to described second channel testing mechanism; And/or the maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or the first competition window length adjustment of Channel Detection Time of the prolongation described first Channel Detection mechanism to be used is the second competition window length of the Channel Detection Time being less than or equal to the prolongation that described second channel testing mechanism uses; And/or being used for of described first Channel Detection mechanism being used judges that whether idle described down channel the first signal strength threshold be adjusted to the secondary signal intensity threshold being used for judging that whether described down channel is idle being more than or equal to described second channel testing mechanism and using.

In this technical scheme, reference signal or/or downlink data is found when the equipment with base station functions sends, by adjusting the parameters information of the first Channel Detection mechanism and second channel testing mechanism in the manner described above, can guarantee effectively to improve the ability that the LBT mechanism sending DRS seizes channel, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, or at least with the LBT mechanism sending generic downlink data, there is identical channel and occupy probability, to reduce terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy.Its detailed process is: CCA length detection time (i.e. granularity) of the LBT mechanism sending DRS is adjusted to CCA length detection time being less than or equal to the LBT mechanism sending data.Such as: when CCA length detection time in the LBT mechanism sending data is 20us (this, length was the minimum detection time granularity of the CCA specified in unlicensed spectrum rule detection time), CCA length detection time sent in the LBT mechanism of reference signal DRS can be 10us, or when in the LBT mechanism sending data, CCA length detection time is 30us, sending CCA length detection time in the LBT mechanism of reference signal DRS can be 20us;

The maximum channel holding time of the LBT mechanism sending reference signal DRS is adjusted to the maximum channel holding time being less than or equal to the LBT mechanism sending data, such as: when in the LBT mechanism sending data, maximum channel holding time is 4ms, sending maximum channel holding time in the LBT mechanism of reference signal DRS can be 3ms;

The competition window length (i.e. q value) of the Channel Detection Time sending the prolongation of the LBT mechanism of reference signal DRS is adjusted to the competition window length (i.e. q value) of the Channel Detection Time of the prolongation being less than the LBT mechanism sending data, thus make when LBT mechanism is based on LBE, the probability that random number N gets smaller value is high, such as: when in the LBT mechanism of transmission reference signal DRS, q value gets 4, the q value sent in the LBT mechanism of data can get 16 to 32, when in the LBT mechanism of such transmission reference signal DRS, random number N is got from 1 ~ q, its value is less, just mean when less CCA detects channel idle detection time, just DRS can be sent,

The CCA Channel Detection thresholding (signal strength threshold) of the LBT mechanism sending reference signal DRS is adjusted to the CCA Channel Detection thresholding (signal strength threshold) being more than or equal to and sending data LBT mechanism and adopt, namely when sending DRS, as long as channel disturbance is not too large, just judge that the channel downstream free time just can send DRS, and when sending downlink data, only when channel disturbance is very little, could judge that channel downstream is idle, could downlink data be sent.Certainly, if the LBT mechanism making the LBT of transmission generic downlink data mechanism comparatively send DRS is more easily robbed account for channel, then can adjust the LBT mechanism sending generic downlink data and the parameters information sent in the LBT mechanism of DRS according to above-mentioned control mode antipodal mode.

In technique scheme, preferably, also comprise: be in the frame structure set for described discovery reference signal the first transmission cycle; In the described first transmission cycle, be set for described discovery reference signal at least one second transmission cycle; Same position in each described second transmission cycle in the second transmission cycle described at least one all arranges a send window, and arrange in send window in order successively in each described second transmission cycle and be used for detecting at least one whether idle Channel Detection Time of described down channel continuously, whether idle for detecting described down channel.

In this technical scheme, by in the frame structure for finding that reference signal arranges larger first transmission cycle, and at least one second less transmission cycle is set in the first transmission cycle, and the same position in each second transmission cycle all arranges a send window, be convenient to arrange in each send window and can detect at least one whether idle Channel Detection Time of down channel continuously and each Channel Detection Time at least one Channel Detection Time arranges CCA, thus whether this CCA can be used in each Channel Detection Time to detect down channel idle, to send DRS signal at one's leisure.

In technique scheme, preferably, the described first transmission cycle is greater than first and presets the transmission cycle, wherein, the minimum period value of described discovery reference signal is sent when the small-cell had in the Serving cell at the equipment place of base station functions is closed described in described first default transmission cycle equaled, and other periodic quantities except described minimum period value used when sending described discovery reference signal when the described first transmission cycle equals the closedown of described small-cell; The described second transmission cycle is less than second and presets the transmission cycle, wherein, described second presets the maximum cycle value that the transmission cycle equals to measure in different-frequency measure interval appearance, the described second transmission cycle equals other periodic quantities that the described measurement interval in different-frequency measure except described maximum cycle value occurs, and the length of described send window equals the length measuring interval described in different-frequency measure.

In this technical scheme, when equaling small-cell closedown by making for the first transmission cycle, other periodic quantities except minimum period value (as 40ms) used when sending discovery reference signal are (as 80ms, 160ms), and made for the first transmission cycle be greater than for the first default transmission cycle, can guarantee that the first transmission cycle was value larger in traditional DRS transmission cycle, such as 160ms, in addition, by other periodic quantities making for the second transmission cycle equal the measurement interval appearance in different-frequency measure except maximum cycle value (as 80ms), and made for the second transmission cycle be less than for the second default transmission cycle, can guarantee the second transmission cycle be measure in different-frequency measure interval occur cycle in smaller value (such as 40ms), whether be idlely convenient to frequently to detect down channel like this, with when the free time being detected, DRS can be sent in time, simultaneously, also the accuracy of channel measurement can be improved, and improve the ability of DRS busy channel further, because down channel detects infrequently when preventing from sending DRS, and cause missing the opportunity sending DRS.

In technique scheme, preferably, also comprise: detect that described down channel is idle when sending arbitrary second in the arbitrary Channel Detection Time in the send window in cycle, and described arbitrary second when sending the maximum channel holding time being more than or equal to described first Channel Detection mechanism remaining time in the send window in cycle and/or the maximum channel holding time of described first Channel Detection mechanism and terminal receiver frequency sum switching time, described discovery reference signal is sent within the remaining time of the send window in described arbitrary second transmission cycle, wherein, described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

In this technical scheme, when the CCA in arbitrary Channel Detection Time detects that down channel is idle, and when being more than or equal to the maximum channel holding time of the first Channel Detection mechanism and/or the maximum channel holding time of the first Channel Detection mechanism and terminal receiver frequency sum switching time the remaining time in send window, illustrate that the sufficiently complete remaining time ground in send window sends a DRS signal, then can send one within the remaining time of the send window in arbitrary second transmission cycle and find reference signal, otherwise, when the CCA in arbitrary Channel Detection Time detects that down channel is idle, but when being less than the maximum channel holding time of the first Channel Detection mechanism and/or the maximum channel holding time of the first Channel Detection mechanism and terminal receiver frequency sum switching time the remaining time in send window, enough intactly transmissions remaining time DRS signal in send window is described, then do not send within the remaining time of the send window in arbitrary second transmission cycle and find reference signal.

In technique scheme, preferably, also comprise: when not detecting that described down channel is idle yet at least one Channel Detection Time in the send window in described arbitrary second transmission cycle, and when meeting the following conditions, stop in the send window in described arbitrary second transmission cycle and other Channel Detection Time are set, and send in the send window in cycle at other adjacent with described arbitrary second transmission cycle second at least one Channel Detection Time is set: be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second sends the maximum channel holding time being less than described first Channel Detection mechanism remaining time in the send window in cycle, and/or be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second send the cycle send window in the maximum channel holding time being less than described first Channel Detection mechanism remaining time and terminal receiver frequency sum switching time.

In this technical scheme, when not detecting that down channel is idle yet at least one Channel Detection Time in the send window in this arbitrary second transmission cycle, if arbitrary second sends the maximum channel holding time being less than the first Channel Detection mechanism remaining time in the send window in cycle and/or the maximum channel holding time of the first Channel Detection mechanism and terminal receiver frequency sum switching time, then just can not be used in the send window in this arbitrary second transmission cycle and other Channel Detection Time are set, namely it goes without doing, and CCA have detected, even if because CCA below detects channel idle in other Channel Detection Time, complete DRS can not be sent, and can send in the send window in cycle at other adjacent with this arbitrary second transmission cycle second successively in order at least one Channel Detection Time is set, whether idle to use CCA to detect down channel in this at least one Channel Detection Time.

In technique scheme, preferably, also comprise: when having sent described discovery reference signal in the send window in described arbitrary second transmission cycle, described down channel is discharged in remaining time in the described first transmission cycle, stop sending described discovery reference signal, and when being provided with at least one second transmission cycle in the described first transmission cycle, stop at residue in the remaining time in the described first transmission cycle other second send arrange for detecting described down channel in the send window in cycles whether idle, for sending the Channel Detection Time of described discovery reference signal.

In this technical scheme, when having sent discovery reference signal in the send window in arbitrary second transmission cycle, then can discharge down channel in the remaining time in the first transmission cycle, no longer to send discovery reference signal, and stop in the send window in other the second transmission cycles of residue to arrange for detecting down channel whether the free time is to send the Channel Detection Time finding reference signal, like this, can ensure in the first transmission cycle, maximum transmission DRS, DRS signal is avoided to send too frequent, take downstream channel time long and affect the normal transmission of downlink data.

In technique scheme, preferably, also comprising: when detecting that described down channel is idle in arbitrary Channel Detection Time that arbitrary second sends the cycle, judging that whether described arbitrary Channel Detection Time is the Channel Detection Time before the described arbitrary second N number of Channel Detection Time sending in the send window in cycle; When judged result is for being, do not send described discovery reference signal, for terminal reserves terminal receiver frequency switching time, otherwise, send described discovery reference signal, wherein, described terminal receiver frequency comprises switching time: the time sum of (N-1) individual described Channel Detection Time, wherein, N is positive integer, and described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

In this technical scheme, when detecting that down channel is idle in the arbitrary Channel Detection Time in arbitrary second transmission cycle, if the Channel Detection Time before this arbitrary Channel Detection Time to be this arbitrary second N number of Channel Detection Time sending in the send window in cycle, then do not send discovery reference signal, like this, the Channel Detection Time before being convenient to N number of Channel Detection Time keeps for terminal using as terminal receiver frequency switching time; Certainly, if this arbitrary Channel Detection Time is the Channel Detection Time after N number of Channel Detection Time or N number of Channel Detection Time, then can illustrates for terminal reserves terminal receiver frequency switching time, then can send discovery reference signal immediately.

In technique scheme, preferably, when whether idlely detecting described down channel in the arbitrary Channel Detection Time in the send window in arbitrary second transmission cycle, if send described discovery reference signal and described downlink data in the described arbitrary second send window domestic demand sending the cycle simultaneously, then the process of the parameter information of the Channel Detection mechanism corresponding to the described data to be sent of described adjustment specifically comprises: described first Channel Detection Time granularity be adjusted to and be less than or equal to described second channel granularity detection time; And/or the maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or described first competition window number is adjusted to is less than or equal to described second competition window number; And/or described first signal strength threshold is adjusted to is more than or equal to described secondary signal intensity threshold; Or the process of the parameter information of Channel Detection mechanism corresponding to the described data to be sent of described adjustment specifically also comprises: described second channel granularity detection time is adjusted to and is more than or equal to described first Channel Detection Time granularity; And/or the maximum channel holding time of described second channel testing mechanism is adjusted to the maximum channel holding time being more than or equal to described first Channel Detection mechanism; And/or described second competition window number is adjusted to is more than or equal to described first competition window number; And/or described secondary signal intensity threshold is adjusted to is less than or equal to described first signal strength threshold.

In this technical scheme, when whether idlely detecting down channel in the arbitrary Channel Detection Time in the send window in arbitrary second transmission cycle, if desired send in the send window in this arbitrary second transmission cycle simultaneously find reference signal and downlink data, then the parameter information of the first Channel Detection mechanism or second channel testing mechanism can be adjusted, the first Channel Detection mechanism and second channel testing mechanism is made all to use the parameter information of second channel testing mechanism, or first Channel Detection mechanism and second channel testing mechanism all use the parameter information of the first Channel Detection mechanism, thus make the first Channel Detection mechanism have equal down channel with second channel testing mechanism and seize probability, to make the first Channel Detection mechanism and second channel testing mechanism fair competition down channel, certainly, first Channel Detection mechanism and second channel testing mechanism can also be adjusted to and use respective parameter information respectively, to make the LBT mechanism sending DRS, there is the higher ability seizing channel, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, thus make the easier busy channel of discovery reference signal, and then reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

In technique scheme, preferably, described method of adjustment be applicable in LTE system unauthorized frequency range on down channel; And described Channel Detection mechanism comprises listem-before-talk mechanism.

Another aspect of the present invention proposes a kind of adjustment System of channel occupancy probabilities, comprise: the first adjustment unit, according to the described data type with the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent; Second adjustment unit, according to the described parameter information after adjustment, adjust the probability that described data to be sent take down channel, wherein, the data type of described data to be sent comprises: find reference signal and/or downlink data.

In this technical scheme, data to be sent i.e. these data to be sent by basis with the equipment of base station functions find reference signal or downlink data, adjust the parameter information of LBT mechanism corresponding to data to be sent (i.e. Channel Detection mechanism), make to find that reference signal and the mechanism of the LBT corresponding to downlink data use identical or different parameters information, thus the probability realizing taking data to be sent down channel adjusts, the ability making the LBT mechanism sending DRS seize channel is improved, the LBT mechanism making the LBT of transmission DRS signal mechanism comparatively send generic downlink data is more easily robbed and is accounted for channel, or at least with the LBT mechanism sending generic downlink data, there is identical channel and seize probability, thus make the easier busy channel of discovery reference signal, or at least with generic downlink data, there is identical channel occupation probability, and then realize sending DRS signal in time, to reduce terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy, certainly, the LBT mechanism sending DRS and the LBT mechanism sending generic downlink data can be also can be machine-processed based on the LBT of load based on the LBT mechanism of frame structure.In addition, the microcell base station etc. that the equipment with base station functions is comprised base station, realized by communication equipment (as smart mobile phone etc.).

In technique scheme, preferably, described first adjustment unit specifically for: according to the described data type with the data to be sent of the equipment of base station functions, adjust following at least one parameter or its combination: the Channel Detection Time granularity of the Channel Detection mechanism corresponding to described data to be sent, the maximum channel holding time of the Channel Detection mechanism corresponding to described data to be sent, the competition window length of the Channel Detection Time of the prolongation used when the described equipment use with base station functions sends described data to be sent based on the Channel Detection mechanism of load, Channel Detection mechanism corresponding to described data to be sent use for judging the signal strength threshold that described down channel is whether idle.

In this technical scheme, by the parameters information in the LBT mechanism corresponding to adjustment discovery reference signal and downlink data, the ability that the LBT mechanism sending DRS seizes channel can be improved, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, thus make the easier busy channel of discovery reference signal, or at least with generic downlink data, there is identical channel occupation probability, and then reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

In technique scheme, preferably, described first adjustment unit concrete also for: by the parameter information of the Channel Detection mechanism corresponding to data to be sent described in following process adjusting, be more than or equal to the probability making described discovery reference signal take described down channel the probability that described second channel testing mechanism takies described down channel: the first Channel Detection Time granularity of described first Channel Detection mechanism is adjusted to second channel granularity detection time being less than or equal to described second channel testing mechanism; And/or the maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or the first competition window length adjustment of Channel Detection Time of the prolongation described first Channel Detection mechanism to be used is the second competition window length of the Channel Detection Time being less than or equal to the prolongation that described second channel testing mechanism uses; And/or being used for of described first Channel Detection mechanism being used judges that whether idle described down channel the first signal strength threshold be adjusted to the secondary signal intensity threshold being used for judging that whether described down channel is idle being more than or equal to described second channel testing mechanism and using.

In this technical scheme, reference signal or/or downlink data is found when the equipment with base station functions sends, by adjusting the parameters information of the first Channel Detection mechanism and second channel testing mechanism in the manner described above, can guarantee effectively to improve the ability that the LBT mechanism sending DRS seizes channel, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, or at least with the LBT mechanism sending generic downlink data, there is identical channel and seize probability, to reduce terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy.Its detailed process is: CCA length detection time (i.e. granularity) of the LBT mechanism sending DRS is adjusted to CCA length detection time being less than or equal to the LBT mechanism sending data.Such as: when CCA length detection time in the LBT mechanism sending data is 20us (this, length was the minimum detection time granularity of the CCA specified in unlicensed spectrum rule detection time), CCA length detection time sent in the LBT mechanism of reference signal DRS can be 10us, or when in the LBT mechanism sending data, CCA length detection time is 30us, sending CCA length detection time in the LBT mechanism of reference signal DRS can be 20us;

In technique scheme, preferably, also comprise: the first setting unit, arranged for the first transmission cycle for described discovery reference signal in the frame structure; Second setting unit, arranges at least one second transmission cycle for described discovery reference signal in the described first transmission cycle; 3rd setting unit, same position in each described second transmission cycle in the second transmission cycle described at least one all arranges a send window, and arrange in send window in order successively in each described second transmission cycle and be used for detecting at least one whether idle Channel Detection Time of described down channel continuously, whether idle for detecting described down channel.

In technique scheme, preferably, also comprise: the first transmitting element, detect that described down channel is idle when sending arbitrary second in the arbitrary Channel Detection Time in the send window in cycle, and described arbitrary second when sending the maximum channel holding time being more than or equal to described first Channel Detection mechanism remaining time in the send window in cycle and/or the maximum channel holding time of described first Channel Detection mechanism and terminal receiver frequency sum switching time, described discovery reference signal is sent within the remaining time of the send window in described arbitrary second transmission cycle, wherein, described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

In technique scheme, preferably, also comprise: the first processing unit, when not detecting that described down channel is idle yet at least one Channel Detection Time in the send window in described arbitrary second transmission cycle, and when meeting the following conditions, stop in the send window in described arbitrary second transmission cycle and other Channel Detection Time are set, and send in the send window in cycle at other adjacent with described arbitrary second transmission cycle second at least one Channel Detection Time is set: be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second sends the maximum channel holding time being less than described first Channel Detection mechanism remaining time in the send window in cycle, and/or be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second send the cycle send window in the maximum channel holding time being less than described first Channel Detection mechanism remaining time and terminal receiver frequency sum switching time.

In technique scheme, preferably, also comprise: the second processing unit, when having sent described discovery reference signal in the send window in described arbitrary second transmission cycle, described down channel is discharged in remaining time in the described first transmission cycle, stop sending described discovery reference signal, and when being provided with at least one second transmission cycle in the described first transmission cycle, stop at residue in the remaining time in the described first transmission cycle other second send arrange for detecting described down channel in the send window in cycles whether idle, for sending the Channel Detection Time of described discovery reference signal.

In technique scheme, preferably, also comprise: judging unit, when detecting that described down channel is idle in arbitrary Channel Detection Time that arbitrary second sends the cycle, judge that whether described arbitrary Channel Detection Time is the Channel Detection Time before the described arbitrary second N number of Channel Detection Time sending in the send window in cycle; Second transmitting element, when judged result is for being, do not send described discovery reference signal, for terminal reserves terminal receiver frequency switching time, otherwise, send described discovery reference signal, wherein, described terminal receiver frequency comprises switching time: the time sum of (N-1) individual described Channel Detection Time, wherein, N is positive integer, and described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

In technique scheme, preferably, described first adjustment unit also for: when send arbitrary second in the arbitrary Channel Detection Time in the send window in cycle detect described down channel whether idle time, if send described discovery reference signal and described downlink data in the described arbitrary second send window domestic demand sending the cycle simultaneously, described first Channel Detection Time granularity is adjusted to and is less than or equal to described second channel granularity detection time; And/or the maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or described first competition window number is adjusted to is less than or equal to described second competition window number; And/or described first signal strength threshold is adjusted to is more than or equal to described secondary signal intensity threshold; Or described first adjustment unit also for: described second channel granularity detection time is adjusted to and is more than or equal to described first Channel Detection Time granularity; And/or the maximum channel holding time of described second channel testing mechanism is adjusted to the maximum channel holding time being more than or equal to described first Channel Detection mechanism; And/or described second competition window number is adjusted to is more than or equal to described first competition window number; And/or described secondary signal intensity threshold is adjusted to is less than or equal to described first signal strength threshold.

In technique scheme, preferably, described adjustment System be applicable in LTE system unauthorized frequency range on down channel; And described Channel Detection mechanism comprises listem-before-talk mechanism.

Another aspect of the present invention proposes a kind of equipment for having base station functions, comprising: the adjustment System of the channel occupancy probabilities according to any one of technique scheme.

In this technical scheme, by arranging the adjustment System of channel occupancy probabilities on the equipment with base station functions, the LBT of transmission DRS mechanism can be made to have the higher ability seizing channel, the LBT mechanism making it comparatively send generic downlink data is more easily robbed to account for channel or at least have identical channel with the LBT mechanism sending generic downlink data and is seized probability, reducing terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

By technical scheme of the present invention, the ability that the LBT mechanism sending DRS seizes channel can be improved, the LBT mechanism making it comparatively send generic downlink data is more easily robbed to account for channel or at least have identical channel with the LBT mechanism sending generic downlink data and is seized probability, to realize sending DRS in time, thus reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

Accompanying drawing explanation

Fig. 1 shows the schematic diagram of two kinds of working methods of unlicensed spectrum;

Regular schematic diagram is avoided in the interference that Fig. 2 shows Wi-Fi system;

Fig. 3 shows the structural representation based on the frame structure of FBE in correlation technique;

Fig. 4 shows the structural representation based on the LBT frame structure of LBE in correlation technique;

Fig. 5 shows the schematic flow sheet of the method for adjustment of channel occupancy probabilities according to an embodiment of the invention;

Fig. 6 shows the structural representation of the adjustment System of channel occupancy probabilities according to an embodiment of the invention;

Fig. 7 shows the structural representation with the equipment of base station functions according to an embodiment of the invention;

Fig. 8 shows the structural representation of the setting position of the send window in the first Channel Detection mechanism according to an embodiment of the invention;

Fig. 9 shows the schematic diagram sending discovery reference signal according to an embodiment of the invention.

Embodiment

In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.

Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.

Fig. 5 shows the schematic flow sheet of the method for adjustment of channel occupancy probabilities according to an embodiment of the invention.

As shown in Figure 5, show the method for adjustment of the channel occupancy probabilities of one embodiment of the present of invention, comprise: step 502, according to the described data type with the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent; Step 504, according to the described parameter information after adjustment, adjust the probability that described data to be sent take down channel, wherein, the data type of described data to be sent comprises: find reference signal and/or downlink data.

In this technical scheme, data to be sent i.e. these data to be sent by basis with the equipment of base station functions find reference signal or downlink data, adjust the parameters information of LBT mechanism corresponding to data to be sent (i.e. Channel Detection mechanism), make to find that reference signal and the mechanism of the LBT corresponding to downlink data use identical or different parameter information, thus the probability realizing taking data to be sent down channel adjusts, the ability making the LBT mechanism sending DRS seize channel is improved, the LBT mechanism making the LBT of transmission DRS signal mechanism comparatively send generic downlink data is more easily robbed and is accounted for channel, or at least with the LBT mechanism sending generic downlink data, there is identical channel and seize probability, thus make the easier busy channel of discovery reference signal or at least with generic downlink data, there is identical channel occupation probability, and then realize sending DRS signal in time, to reduce terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy, certainly, the LBT mechanism sending DRS and the LBT mechanism sending generic downlink data can be also can be machine-processed based on the LBT of load based on the LBT mechanism of frame structure.In addition, the microcell base station etc. that the equipment with base station functions is comprised base station, realized by communication equipment (as smart mobile phone etc.).

Fig. 6 shows the structural representation of the adjustment System of channel occupancy probabilities according to an embodiment of the invention.

As shown in Figure 6, show the adjustment System 600 of the channel occupancy probabilities of one embodiment of the present of invention, comprise: the first adjustment unit 602, according to the described data type with the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent; Second adjustment unit 604, according to the described parameter information after adjustment, adjust the probability that described data to be sent take down channel, wherein, the data type of described data to be sent comprises: find reference signal and/or downlink data.

In this technical scheme, data to be sent i.e. these data to be sent by basis with the equipment of base station functions find reference signal or downlink data, adjust the parameter information of LBT mechanism corresponding to data to be sent (i.e. Channel Detection mechanism), make to find that reference signal and the mechanism of the LBT corresponding to downlink data use identical or different parameters information, thus the probability realizing taking data to be sent down channel adjusts, the ability making the LBT mechanism sending DRS seize channel is improved, the LBT mechanism making the LBT of transmission DRS signal mechanism comparatively send generic downlink data is more easily robbed and is accounted for channel, or at least with the LBT mechanism sending generic downlink data, there is identical channel and occupy probability, thus make the easier busy channel of discovery reference signal or at least with generic downlink data, there is identical channel occupation probability, and then realize sending DRS signal in time, to reduce terminal measuring reference signals DRS, carry out cell identification, down-going synchronous, the power consumption consumed when time-frequency is estimated, improve accuracy, certainly, the LBT mechanism sending DRS and the LBT mechanism sending generic downlink data can be also can be machine-processed based on the LBT of load based on the LBT mechanism of frame structure.In addition, the microcell base station etc. that the equipment with base station functions is comprised base station, realized by communication equipment (as smart mobile phone etc.).

In technique scheme, preferably, described first adjustment unit 602 specifically for: according to the described data type with the data to be sent of the equipment of base station functions, adjust following at least one parameter or its combination: the Channel Detection Time granularity of the Channel Detection mechanism corresponding to described data to be sent, the maximum channel holding time of the Channel Detection mechanism corresponding to described data to be sent, the competition window length of the Channel Detection Time of the prolongation used when the described equipment use with base station functions sends described data to be sent based on the Channel Detection mechanism of load, Channel Detection mechanism corresponding to described data to be sent use for judging the signal strength threshold that described down channel is whether idle.

In this technical scheme, by the parameters information in the LBT mechanism corresponding to adjustment discovery reference signal and downlink data, the ability that the LBT mechanism sending DRS seizes channel can be improved, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, or at least with generic downlink data, there is identical channel occupation probability, make the easier busy channel of discovery reference signal, and then reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

In technique scheme, preferably, described first adjustment unit 602 concrete also for: by the parameter information of the Channel Detection mechanism corresponding to data to be sent described in following process adjusting, be more than or equal to the probability making described discovery reference signal take described down channel the probability that described second channel testing mechanism takies described down channel: the first Channel Detection Time granularity of described first Channel Detection mechanism is adjusted to second channel granularity detection time being less than or equal to described second channel testing mechanism; And/or the maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or the first competition window length adjustment of Channel Detection Time of the prolongation described first Channel Detection mechanism to be used is the second competition window length of the Channel Detection Time being less than or equal to the prolongation that described second channel testing mechanism uses; And/or being used for of described first Channel Detection mechanism being used judges that whether idle described down channel the first signal strength threshold be adjusted to the secondary signal intensity threshold being used for judging that whether described down channel is idle being more than or equal to described second channel testing mechanism and using.

In technique scheme, preferably, also comprise: the first setting unit 606, arranged for the first transmission cycle for described discovery reference signal in the frame structure; Second setting unit 608, arranges at least one second transmission cycle for described discovery reference signal in the described first transmission cycle; 3rd setting unit 610, same position in each described second transmission cycle in the second transmission cycle described at least one all arranges a send window, and arrange in send window in order successively in each described second transmission cycle and be used for detecting at least one whether idle Channel Detection Time of described down channel continuously, whether idle for detecting described down channel.

In technique scheme, preferably, also comprise: the first transmitting element 612, detect that described down channel is idle when sending arbitrary second in the arbitrary Channel Detection Time in the send window in cycle, and described arbitrary second when sending the maximum channel holding time being more than or equal to described first Channel Detection mechanism remaining time in the send window in cycle and/or the maximum channel holding time of described first Channel Detection mechanism and terminal receiver frequency sum switching time, described discovery reference signal is sent within the remaining time of the send window in described arbitrary second transmission cycle, wherein, described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

In technique scheme, preferably, also comprise: the first processing unit 614, when not detecting that described down channel is idle yet at least one Channel Detection Time in the send window in described arbitrary second transmission cycle, and when meeting the following conditions, stop in the send window in described arbitrary second transmission cycle and other Channel Detection Time are set, and send in the send window in cycle at other adjacent with described arbitrary second transmission cycle second at least one Channel Detection Time is set: be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second sends the maximum channel holding time being less than described first Channel Detection mechanism remaining time in the send window in cycle, and/or be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second send the cycle send window in the maximum channel holding time being less than described first Channel Detection mechanism remaining time and terminal receiver frequency sum switching time.

In technique scheme, preferably, also comprise: the second processing unit 616, when having sent described discovery reference signal in the send window in described arbitrary second transmission cycle, described down channel is discharged in remaining time in the described first transmission cycle, stop sending described discovery reference signal, and when being provided with at least one second transmission cycle in the described first transmission cycle, stop at residue in the remaining time in the described first transmission cycle other second send arrange for detecting described down channel in the send window in cycles whether idle, for sending the Channel Detection Time of described discovery reference signal.

In technique scheme, preferably, also comprise: judging unit 618, when detecting that described down channel is idle in arbitrary Channel Detection Time that arbitrary second sends the cycle, judge that whether described arbitrary Channel Detection Time is the Channel Detection Time before the described arbitrary second N number of Channel Detection Time sending in the send window in cycle; Second transmitting element 620, when judged result is for being, do not send described discovery reference signal, for terminal reserves terminal receiver frequency switching time, otherwise, send described discovery reference signal, wherein, described terminal receiver frequency comprises switching time: the time sum of (N-1) individual described Channel Detection Time, wherein, N is positive integer, and described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

In technique scheme, preferably, described first adjustment unit 602 also for: when send arbitrary second in the arbitrary Channel Detection Time in the send window in cycle detect described down channel whether idle time, if send described discovery reference signal and described downlink data in the described arbitrary second send window domestic demand sending the cycle simultaneously, described first Channel Detection Time granularity is adjusted to and is less than or equal to described second channel granularity detection time; And/or the maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or described first competition window number is adjusted to is less than or equal to described second competition window number; And/or described first signal strength threshold is adjusted to is more than or equal to described secondary signal intensity threshold; Or described first adjustment unit 602 also for: described second channel granularity detection time is adjusted to and is more than or equal to described first Channel Detection Time granularity; And/or the maximum channel holding time of described second channel testing mechanism is adjusted to the maximum channel holding time being more than or equal to described first Channel Detection mechanism; And/or described second competition window number is adjusted to is more than or equal to described first competition window number; And/or described secondary signal intensity threshold is adjusted to is less than or equal to described first signal strength threshold.

In this technical scheme, when whether idlely detecting down channel in the arbitrary Channel Detection Time in the send window in arbitrary second transmission cycle, if desired send in the send window in this arbitrary second transmission cycle simultaneously find reference signal and downlink data, then the parameter information of the first Channel Detection mechanism or second channel testing mechanism can be adjusted, the first Channel Detection mechanism and second channel testing mechanism is made all to use the parameter information of second channel testing mechanism, or first Channel Detection mechanism and second channel testing mechanism all use the parameter information of the first Channel Detection mechanism, thus make the first Channel Detection mechanism have equal down channel with second channel testing mechanism and seize probability, to make the first Channel Detection mechanism and second channel testing mechanism fair competition down channel, certainly, first Channel Detection mechanism and second channel testing mechanism can also be adjusted to and use respective parameter information respectively, to make the LBT mechanism sending DRS, there is the higher ability seizing channel, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, make the easier busy channel of discovery reference signal, and then reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

Fig. 7 shows the structural representation with the equipment of base station functions according to an embodiment of the invention.

As shown in Figure 7, show the equipment 700 with base station functions of one embodiment of the present of invention, comprising: the adjustment System 600 of the channel occupancy probabilities according to any one of technique scheme.

In this technical scheme, by arranging the adjustment System 600 of channel occupancy probabilities on the equipment 700 with base station functions, the LBT of transmission DRS mechanism can be made to have the higher ability seizing channel, the LBT mechanism making it comparatively send generic downlink data is more easily robbed to account for channel or at least have identical channel with the LBT mechanism sending generic downlink data and is seized probability, reducing terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

Fig. 8 shows the structural representation of the setting position of the send window in the listem-before-talk mechanism corresponding to discovery reference signal according to an embodiment of the invention; Fig. 9 shows the schematic diagram sending discovery reference signal according to an embodiment of the invention.

Technical scheme of the present invention is described in detail below in conjunction with Fig. 8 and Fig. 9:

First in the frame structure of LAA SCell (small-cell) base station, arrange the cycle that one sends DRS, claim the period 1 here, the period 1 needs to get value larger in traditional DRS transmission cycle, such as 160ms, as shown in Figure 8.

Secondly in the period 1, arrange a minor cycle, claim second round here, this minor cycle is the periodic quantity at measurement gap (measurement interval), such as 40ms, as shown in Figure 8.

In every 40ms, have a length to be the window of 6ms, and this 6ms occurs in the cycle, this 6ms window can for sending DRS.

Here in fact 6ms is exactly the length of measurement gap, the transmission length (maximum 5ms) of length or DRS that its length just in time covers traditional PSS, SSS, CRS (5ms) adds the time that receiver frequency switches, but due to the restriction by maximum channel holding time, the length of the DRS of LAASCell can not as traditional DRS length, cannot take 5ms, we are called DRS length here, and its value may be 2.5ms, 3ms, 4ms etc.That is we DRS of design only needs the part taken in 6ms window to send.

In addition, in this frame structure from the original position of 6ms, is divided into the granularity that some are little the time, this granularity (i.e. Channel Detection Time) is used to be CCA and detects, in order to account for channel than the eNB having data to send (base station) easier robbing, CCA here detects granularity (i.e. Channel Detection Time) can be set to 10us (also can be 20us).We are with DRS length (i.e. maximum channel holding time) for 3ms below, and Channel Detection Time is 10us is that example illustrates how to send DRS:

From 6ms starting point, every 10us is a CCA and detects, as long as a CCA detects that down channel is idle, immediately sends DRS.Simultaneously, here for send DRS LBT mechanism a little as the combination of FBE and LBE, CCA starting point is the 40ms cycle, be the equal of the FBE mechanism periodically occurred, after but first CCA detects channel busy, unlike FBE, wait until that the CCA in next 40ms cycle starts to detect again, but as LBE mechanism, continue to detect, but random number N value is 1 in the Extended CCA of LBE (Channel Detection Time of prolongation), as long as detect that 1 secondary channel is idle, then can busy channel.(here in order to reserve the time that terminal receiver frequency switches, such as need 20us, even if having 2 CCA channel idle being detected above in so same second round, also first do not send, until there is the 3rd CCA channel idle being detected in this same second round, just send DRS)

DRS ends after sending 3ms, and eNB discharges channel.But when if the CCA in arbitrary Channel Detection Time in arbitrary second round detects channel idle, be discontented with remaining time of 6ms 3ms and (or consider that frequency switches, reserving the time of 20us, then should be discontented 3ms+20us), just it goes without doing so below, and CCA have detected.Even if because the CCA in other the arbitrary Channel Detection Time in this arbitrary second round detects channel idle, can not complete DRS be sent.

In addition, in 4 second rounds in this period 1, the send window of each second round can be attempted sending DRS, if but successfully sent DRS in the send window of second round above, then the send window in second round below just need not have been attempted.If successfully do not send DRS above, then the send window in second round below continued to attempt.That is, as long as ensure in the period 1 to have sent a DRS.

Fig. 9 provides the example (in example, CCA granularity detection time of 10us and the maximum channel holding time of 3ms are schematic diagram) that some send DRS

In Case 1, in the 5th Channel Detection Time (i.e. the 5th CCA time), detect that down channel is idle, and be greater than 3ms remaining time, then send DRS.So within the remaining time of 160ms, eNB can not because transmission DRS and busy channel, does not also need to arrange because sending DRS the CCA time to detect channel idle again.

In Case 2, the CCA in the 9th Channel Detection Time detects that down channel is idle, and is greater than 3ms remaining time, then send DRS.So within the remaining time of 160ms, eNB can not because transmission DRS and busy channel, does not also need to arrange because sending DRS the CCA time to detect channel idle again.

In Case 3, when the CCA in the 20th Channel Detection Time detects that down channel is idle, remaining time just only remains 3ms, then, after sending DRS, the widow time of 6ms terminates.

In Case 4, when 6ms widow time only remains 3ms, do not detect at least one Channel Detection Time (i.e. at least one CCA time) in the send window of second round that down channel is idle yet, then just not be used in the send window of this second round and other Channel Detection Time are set, also the CCA time just need not be used to have detected, even if because detect that down channel is idle, can not complete DRS be sent.When the 6ms window so waiting until in the next 40ms cycle starts, then the CCA carrying out sending DRS detects.

In addition, when eNB also has data to send at this few 6ms window, three kinds of solutions:

The listem-before-talk mechanism sending listem-before-talk mechanism and the transmission downlink data finding reference signal uses respective parameter information respectively;

The listem-before-talk mechanism sending listem-before-talk mechanism and the transmission downlink data finding reference signal all uses the parameter information of the listem-before-talk mechanism sending downlink data.

The listem-before-talk mechanism sending downlink data and the listem-before-talk mechanism sending discovery reference signal all use the parameter information sending the listem-before-talk mechanism finding reference signal.

More than be described with reference to the accompanying drawings technical scheme of the present invention, the ability that the LBT mechanism sending DRS seizes channel can be improved, its LBT mechanism comparatively sending generic downlink data is more easily robbed and accounts for channel, thus make the easier busy channel of discovery reference signal or at least with the LBT mechanism sending generic downlink data, there is identical channel to seize probability, and then realize sending DRS in time, thus reduce terminal measuring reference signals DRS, carry out cell identification, power consumption that down-going synchronous, time-frequency consume when estimating, improve accuracy.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a method of adjustment for channel occupancy probabilities, for having the equipment of base station functions, is characterized in that, comprising:

According to the described data type with the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent;

According to the described parameter information after adjustment, adjust the probability that described data to be sent take down channel, wherein, the data type of described data to be sent comprises: find reference signal and/or downlink data.

2. channel occupancy probabilities method of adjustment according to claim 1, is characterized in that,

There is described in described basis the data type of the data to be sent of the equipment of base station functions, adjust the parameter information of the Channel Detection mechanism corresponding to described data to be sent, specifically comprise:

According to the described data type with the data to be sent of the equipment of base station functions, adjust following at least one parameter or its combination: the Channel Detection Time granularity of the Channel Detection mechanism corresponding to described data to be sent, the maximum channel holding time of the Channel Detection mechanism corresponding to described data to be sent, the competition window length of the Channel Detection Time of the prolongation used when the described equipment use with base station functions sends described data to be sent based on the Channel Detection mechanism of load, Channel Detection mechanism corresponding to described data to be sent use for judging the signal strength threshold that described down channel is whether idle.

3. channel occupancy probabilities method of adjustment according to claim 1, it is characterized in that, described Channel Detection mechanism comprises: the first Channel Detection mechanism and second channel testing mechanism, wherein, when sending described discovery reference signal, using described first Channel Detection mechanism to detect described down channel, when sending described downlink data, using described second channel testing mechanism to detect described down channel.

4. the method for adjustment of channel occupancy probabilities according to claim 3, is characterized in that,

By the parameter information of the Channel Detection mechanism corresponding to data to be sent described in following process adjusting, be more than or equal to the probability making described discovery reference signal take described down channel the probability that described second channel testing mechanism takies described down channel:

First Channel Detection Time granularity of described first Channel Detection mechanism is adjusted to second channel granularity detection time being less than or equal to described second channel testing mechanism; And/or

The maximum channel holding time of described first Channel Detection mechanism is adjusted to the maximum channel holding time being less than or equal to described second channel testing mechanism; And/or

First competition window length adjustment of the Channel Detection Time of the prolongation described first Channel Detection mechanism used is the second competition window length of the Channel Detection Time being less than or equal to the prolongation that described second channel testing mechanism uses; And/or

Being used for of described first Channel Detection mechanism being used judges that whether idle described down channel the first signal strength threshold be adjusted to the secondary signal intensity threshold being used for judging that whether described down channel is idle being more than or equal to described second channel testing mechanism and using.

5. the method for adjustment of channel occupancy probabilities according to claim 4, is characterized in that, also comprises:

In the frame structure be set for described discovery reference signal the first transmission cycle;

In the described first transmission cycle, be set for described discovery reference signal at least one second transmission cycle;

Same position in each described second transmission cycle in the second transmission cycle described at least one all arranges a send window, and arrange in send window in order successively in each described second transmission cycle and be used for detecting at least one whether idle Channel Detection Time of described down channel continuously, whether idle for detecting described down channel.

6. the method for adjustment of channel occupancy probabilities according to claim 5, is characterized in that,

The described first transmission cycle is greater than first and presets the transmission cycle, wherein, the minimum period value of described discovery reference signal is sent when the small-cell had in the Serving cell at the equipment place of base station functions is closed described in described first default transmission cycle equaled, and other periodic quantities except described minimum period value used when sending described discovery reference signal when the described first transmission cycle equals the closedown of described small-cell;

The described second transmission cycle is less than second and presets the transmission cycle, wherein, described second presets the maximum cycle value that the transmission cycle equals to measure in different-frequency measure interval appearance, the described second transmission cycle equals other periodic quantities that the described measurement interval in different-frequency measure except described maximum cycle value occurs, and the length of described send window equals the length measuring interval described in different-frequency measure.

7. the method for adjustment of channel occupancy probabilities according to claim 5, is characterized in that, also comprises:

Detect that described down channel is idle when sending arbitrary second in the arbitrary Channel Detection Time in the send window in cycle, and described arbitrary second when sending the maximum channel holding time being more than or equal to described first Channel Detection mechanism remaining time in the send window in cycle and/or the maximum channel holding time of described first Channel Detection mechanism and terminal receiver frequency sum switching time, described discovery reference signal is sent within the remaining time of the send window in described arbitrary second transmission cycle, wherein, described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

8. the method for adjustment of channel occupancy probabilities according to claim 7, is characterized in that, also comprises:

When not detecting that described down channel is idle yet at least one Channel Detection Time in the send window in described arbitrary second transmission cycle, and when meeting the following conditions, stop in the send window in described arbitrary second transmission cycle and other Channel Detection Time are set, and send in the send window in cycle at other adjacent with described arbitrary second transmission cycle second at least one Channel Detection Time is set: be provided with at least one second transmission cycle in the described first transmission cycle, and

Described arbitrary second sends the maximum channel holding time being less than described first Channel Detection mechanism remaining time in the send window in cycle; And/or

Be provided with at least one second transmission cycle in the described first transmission cycle, and described arbitrary second send the cycle send window in the maximum channel holding time being less than described first Channel Detection mechanism remaining time and terminal receiver frequency sum switching time.

9. the method for adjustment of channel occupancy probabilities according to claim 7, is characterized in that, also comprises:

When having sent described discovery reference signal in the send window in described arbitrary second transmission cycle, described down channel is discharged in remaining time in the described first transmission cycle, stop sending described discovery reference signal, and when being provided with at least one second transmission cycle in the described first transmission cycle, stop at residue in the remaining time in the described first transmission cycle other second send arrange for detecting described down channel in the send window in cycles whether idle, for sending the Channel Detection Time of described discovery reference signal.

10. the method for adjustment of the channel occupancy probabilities according to any one of claim 5 to 9, is characterized in that, also comprises:

When detecting that described down channel is idle in arbitrary Channel Detection Time that arbitrary second sends the cycle, judge that whether described arbitrary Channel Detection Time is the Channel Detection Time before the described arbitrary second N number of Channel Detection Time sending in the send window in cycle;

When judged result is for being, do not send described discovery reference signal, for terminal reserves terminal receiver frequency switching time, otherwise, send described discovery reference signal, wherein, described terminal receiver frequency comprises switching time: the time sum of (N-1) individual described Channel Detection Time

Wherein, N is positive integer, and described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

The method of adjustment of 11. channel occupancy probabilities according to any one of claim 5 to 9, is characterized in that,

When whether idlely detecting described down channel in the arbitrary Channel Detection Time in the send window in arbitrary second transmission cycle, if send described discovery reference signal and described downlink data in the described arbitrary second send window domestic demand sending the cycle simultaneously, then

The process of the parameter information of the Channel Detection mechanism corresponding to the described data to be sent of described adjustment specifically comprises:

Described first Channel Detection Time granularity is adjusted to and is less than or equal to described second channel granularity detection time; And/or

Described first competition window number is adjusted to and is less than or equal to described second competition window number; And/or

Described first signal strength threshold is adjusted to and is more than or equal to described secondary signal intensity threshold; Or

The process of the parameter information of the Channel Detection mechanism corresponding to the described data to be sent of described adjustment specifically also comprises:

Described second channel granularity detection time is adjusted to and is more than or equal to described first Channel Detection Time granularity; And/or

The maximum channel holding time of described second channel testing mechanism is adjusted to the maximum channel holding time being more than or equal to described first Channel Detection mechanism; And/or

Described second competition window number is adjusted to and is more than or equal to described first competition window number; And/or

Described secondary signal intensity threshold is adjusted to and is less than or equal to described first signal strength threshold.

The method of adjustment of 12. channel occupancy probabilities according to any one of claim 1 to 9, is characterized in that,

Described method of adjustment is applicable to the down channel in the unauthorized frequency range in LTE system.

The adjustment System of 13. 1 kinds of channel occupancy probabilities, for having the equipment of base station functions, is characterized in that, comprising:

First adjustment unit, according to the described data type with the data to be sent of the equipment of base station functions, adjusts the parameter information of the Channel Detection mechanism corresponding to described data to be sent;

Second adjustment unit, according to the described parameter information after adjustment, adjust the probability that described data to be sent take down channel, wherein, the data type of described data to be sent comprises: find reference signal and/or downlink data.

14. channel occupancy probabilities adjustment System according to claim 13, is characterized in that,

Described first adjustment unit specifically for:

15. channel occupancy probabilities adjustment System according to claim 13, it is characterized in that, described Channel Detection mechanism comprises: the first Channel Detection mechanism and second channel testing mechanism, wherein, when sending described discovery reference signal, using described first Channel Detection mechanism to detect described down channel, when sending described downlink data, using described second channel testing mechanism to detect described down channel.

The adjustment System of 16. channel occupancy probabilities according to claim 15, is characterized in that,

Described first adjustment unit concrete also for:

The adjustment System of 17. channel occupancy probabilities according to claim 16, is characterized in that, also comprise:

First setting unit, arranged for the first transmission cycle for described discovery reference signal in the frame structure;

Second setting unit, arranges at least one second transmission cycle for described discovery reference signal in the described first transmission cycle;

3rd setting unit, same position in each described second transmission cycle in the second transmission cycle described at least one all arranges a send window, and arrange in send window in order successively in each described second transmission cycle and be used for detecting at least one whether idle Channel Detection Time of described down channel continuously, whether idle for detecting described down channel.

The adjustment System of 18. channel occupancy probabilities according to claim 17, is characterized in that,

The adjustment System of 19. channel occupancy probabilities according to claim 17, is characterized in that, also comprise:

First transmitting element, detect that described down channel is idle when sending arbitrary second in the arbitrary Channel Detection Time in the send window in cycle, and described arbitrary second when sending the maximum channel holding time being more than or equal to described first Channel Detection mechanism remaining time in the send window in cycle and/or the maximum channel holding time of described first Channel Detection mechanism and terminal receiver frequency sum switching time, described discovery reference signal is sent within the remaining time of the send window in described arbitrary second transmission cycle, wherein, described arbitrary second transmission cycle is the arbitrary second transmission cycle in the described first transmission cycle.

The adjustment System of 20. channel occupancy probabilities according to claim 19, is characterized in that, also comprise:

First processing unit, when not detecting that described down channel is idle yet at least one Channel Detection Time in the send window in described arbitrary second transmission cycle, and when meeting the following conditions, stop at described arbitrary second to send in the send window in cycle and arrange other Channel Detection Time, and send in the send window in cycle at other adjacent with described arbitrary second transmission cycle second at least one Channel Detection Time is set:

At least one second transmission cycle is provided with in the described first transmission cycle, and

The maximum channel holding time being less than described first Channel Detection mechanism remaining time in the send window in described arbitrary second transmission cycle and terminal receiver frequency sum switching time.

The adjustment System of 21. channel occupancy probabilities according to claim 19, is characterized in that, also comprise:

Second processing unit, when having sent described discovery reference signal in the send window in described arbitrary second transmission cycle, described down channel is discharged in remaining time in the described first transmission cycle, stop sending described discovery reference signal, and when being provided with at least one second transmission cycle in the described first transmission cycle, stop at residue in the remaining time in the described first transmission cycle other second send arrange for detecting described down channel in the send window in cycles whether idle, for sending the Channel Detection Time of described discovery reference signal.

22., according to claim 17 to the adjustment System of the channel occupancy probabilities according to any one of 21, is characterized in that, also comprise:

Judging unit, when detecting that described down channel is idle in arbitrary Channel Detection Time that arbitrary second sends the cycle, judge that whether described arbitrary Channel Detection Time is the Channel Detection Time before the described arbitrary second N number of Channel Detection Time sending in the send window in cycle;

Second transmitting element, when judged result is for being, do not send described discovery reference signal, for terminal reserves terminal receiver frequency switching time, otherwise, send described discovery reference signal, wherein, described terminal receiver frequency comprises switching time: the time sum of (N-1) individual described Channel Detection Time

23., according to claim 17 to the adjustment System of the channel occupancy probabilities according to any one of 21, is characterized in that,

Described first adjustment unit also for:

When whether idlely detecting described down channel in the arbitrary Channel Detection Time in the send window in arbitrary second transmission cycle, if send described discovery reference signal and described downlink data in the described arbitrary second send window domestic demand sending the cycle simultaneously,

Described first adjustment unit also for:

24., according to claim 13 to the adjustment System of the channel occupancy probabilities according to any one of 21, is characterized in that,

Described adjustment System is applicable to the down channel in the unauthorized frequency range in LTE system.

25. 1 kinds for having the equipment of base station functions, is characterized in that, comprising:

The adjustment System of the channel occupancy probabilities according to any one of claim 13 to 24.