CN106464424A - Preset frequency spectrum resource detection and occupancy method, and communication device - Google Patents

Preset frequency spectrum resource detection and occupancy method, and communication device Download PDF

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Publication number
CN106464424A
CN106464424A CN201480079206.6A CN201480079206A CN106464424A CN 106464424 A CN106464424 A CN 106464424A CN 201480079206 A CN201480079206 A CN 201480079206A CN 106464424 A CN106464424 A CN 106464424A
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channel
communication equipment
subframe
frequency spectrum
cca
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CN106464424B (en
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闫志宇
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to a preset frequency spectrum resource acquisition method, the method comprising: a communication device starts to execute clear channel assessment (CCA) on a shared channel in preset frequency spectrum resources at the start point of the CCA window of the subframe N in an LTE system; during CCA, before the counting time of the CCA of the communication device, the communication device assesses that the shared channel is occupied; alternatively, when the CCA execution time reaches the counting time of the CCA assessment of the communication device, ending the assessment of the clear state of the shared channel; if the time that the communication device executes CCA in the CCA window of the subframe N in the LTE system is equal to the counting time of the CCA of the communication device, then determining that the shared channel is clear, and transmitting in the shared channel the data required to be transmitted. An embodiment of the present invention ensures equal opportunity for each device to use the channel, and reduces channel occupation conflict.

Description

Preset frequency spectrum resource detection and occupancy method, and communication device
Default frequency spectrum resource detection is with taking method and communication equipment
Technical field
The present invention relates to the communications field, and in particular to a kind of default frequency spectrum resource acquisition methods and communication equipment.Background technology
Due to unauthorized（Unlicensed) wireless communication system and operator are used on frequency spectrum and do not constrained, Long Term Evolution（LTE) system by the use of one of feasible program of unlicensed frequency spectrums be using unlicensed frequency spectrums as LTE base station secondary cell（Scell) frequency spectrum resource is used.But, do not constrained because unlicensed spectrum is used wireless communication system and operator, therefore there is a situation where that multiple operation commercial cities of plurality of communication systems are wanted to take same frequency spectrum.In the prior art, wireless communication system need to use listem-before-talk when taking unlicensed spectrum communication（Listen-Before-Talk, LBT) rule, i.e. node, using before channel, first listen to whether channel is idle, can use the channel on the unlicensed spectrum if channel idle, but it is restricted to take the time of the channel.Reached in the time for taking the channel after maximum limitation, it is necessary to discharge the unlicensed spectrum for a period of time.Before taking the channel on the unlicensed spectrum next time, it is necessary to whether idle once again listen for channel.According to current regulation, Wireless Telecom Equipment is on unlicensed spectrum in use, needing to meet the communication equipment based on frame（Frame based equipment) listem-before-talk mechanism requirement or the communication equipment based on load（Load based equipment) listem-before-talk mechanism requirement.
In the listem-before-talk mechanism of the communication equipment (Frame based equipment) based on frame, before starting to take unauthorized frequency language channel, communication equipment performs channel idle by energy measuring and assesses (Clear Channel Assessment, CCA), communication equipment is often CCA time referred to as TCCA.It is " Channel holding time " that wherein communication equipment, which takes timing definition of the unauthorized frequency language channel without doing channel idle assessment again,.Communication equipment, which is taken after unauthorized frequency language channel sends signal, to be needed to release Put the unlicensed spectrum channel for a period of time, the timing definition of the release unauthorized frequency language channel is " channel
The Idle times ".Communication equipment can re-execute a CCA when Idle periods terminate.
If communication equipment detects channel idle within the channel idle assessment time, signal can be sent on the unlicensed spectrum channel at once.And if communication equipment that channel is detected within the channel idle assessment time is occupied, then the communication equipment can not send signal in ensuing " anchor-frame is for a long time " on the unauthorized frequency language channel.The length of " anchor-frame is for a long time " refers to the temporal summation of " Channel holding time " and " channel Idle times " of the communication equipment.
Communication equipment is according to based on frame（Frame based equipment) listem-before-talk mechanism require take with release unlicensed spectrum channel resource, while according to frame scheduling structure transmission with receive data when, between multiple communication equipments in the case of time synchronized, each communication equipment all intercepts channel idle situation and attempts busy channel before data is transmitted, causes each communication equipment busy channel to produce the probability conflicted very big.Simultaneously because communication equipment intercept channel time and other equipment whether busy channel and this equipment " anchor-frame is for a long time " it is relevant, cause the unequal opportunities of each hold facility channel.The content of the invention
It is an object of the invention to provide a kind of default frequency spectrum resource acquisition methods, to realize that ensureing to take default frequency spectrum resource between communication equipment chance tries one's best equalization, and the collision problem for avoiding communication equipment preempting resources from causing.Wherein, default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource, such as unlicensed spectrum.
In a first aspect, including the embodiments of the invention provide a kind of default frequency spectrum resource detection with taking method, its methods described：
Channel idle evaluation window starting point of the communication equipment in system subframe N, start to perform the channel of the default frequency spectrum resource channel idle assessment CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N', N' of the communication equipment in system subframe N are institute State communication equipment and CCA maximum times are being performed in system subframe N；
When the communication equipment is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the communication equipment judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
When the communication equipment system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, then, judge the channel idle of the default frequency spectrum resource, and transmission needs the data transmitted in the channel of the default frequency spectrum resource；
The default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
With reference to first aspect, in the first possible embodiment, when the communication equipment is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment in the system subframe N number of times X for being CCA, N'-x is performed to the CCA count values of CCA subframe next time as the equipment.
With reference to first aspect, in second of possible embodiment, the communication equipment system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipmentQThe whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
With reference to the first possible embodiment of first aspect or first aspect, in the third possible embodiment, when the communication equipment is occupied not up in the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value in the number of times that system subframe N is CCA, if since communication equipment assessment is occupied to the channel of the default frequency spectrum resource, to warp The prolonged end point of anchor-frame of the communication equipment has been gone through in subframe M；Shellfish ' J,
During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window.
With reference to first aspect or second of possible embodiment of first aspect, in the 4th kind of possible embodiment, if since the communication equipment the channel of the default frequency spectrum resource sends signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J
If since the communication equipment the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
If since the communication equipment the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M+1.
With reference to first aspect, or second of first aspect or the 4th kind of possible embodiment, in the 5th kind of possible embodiment, when the channel idle for judging the default frequency spectrum resource, and transmission needs the data transmitted in the shared channel, further comprises：
The communication equipment sends filling signal, the random signal that the filling signal sends for occupancy shared channel before scheduling data are sent.
With reference to the 5th kind of possible embodiment of first aspect, in the 6th kind of possible embodiment, methods described also includes： The communication equipment is notified to the recipient of signal, it is described notify to carry the communication equipment and take the channel of default frequency spectrum resource send the time span of signal transmitted in last subframe of signal, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
With reference in a first aspect, in the 7th kind of possible embodiment, the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
Second aspect, the embodiments of the invention provide a kind of communication equipment, the communication equipment includes：Channel idle assessment unit, for the channel idle evaluation window starting point in system subframe N, start to perform the channel of the default frequency spectrum resource channel idle assessment CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N', N' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe N；
The channel idle assessment unit is during the CCA is performed, when the communication equipment is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the communication equipment judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
Count value is assessed in the channel idle of present sub-frame in the communication equipment when the communication equipment does CCA number and reached in system subframe N, then, the channel idle assessment unit judges the channel idle of the default frequency spectrum resource；
Transmission unit, for the data that transmission needs are transmitted in the shared channel；
The default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
With reference to second aspect, in the first possible embodiment, the channel idle estimation unit is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment when the communication equipment in the system subframe N number of times X for being CCA, will N'-x performs the CCA count values of CCA subframe as the equipment next time.
With reference to second aspect, in second of possible embodiment, the channel idle estimation unit system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipmentQThe whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
With reference to the first possible embodiment of second aspect or second aspect, in the third possible embodiment, when the channel status estimation unit is occupied not up in the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value in the number of times that CCA is in system subframe N, if since channel status estimation unit assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Then,
During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the channel status estimation unit performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the channel status estimation unit performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window..
With reference to second aspect or second of possible embodiment of second aspect, in the 4th kind of possible embodiment, if since the transmission unit the channel of the default frequency spectrum resource sends signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J
If since the transmission unit the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the channel estimating unit is performing CCA next time Starting point is the starting point of the channel idle evaluation window of the subframe M；
If since the transmission unit the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the channel estimating unit is performing starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M+1.
With reference to second aspect, or second of second aspect or the 4th kind of possible embodiment, in the 5th kind of possible embodiment, the communication equipment also includes：
Fills unit, for the filling signal sent before scheduling data are sent, the random signal that the filling signal sends for occupancy shared channel.
With reference to the 5th kind of possible embodiment of second aspect, in the 6th kind of possible embodiment, the communication equipment also includes：
Notification unit, for recipient's notice to signal, it is described notify to carry the communication equipment and take the channel of default frequency spectrum resource send the time span of signal transmitted in last subframe of signal, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
With reference to second aspect, in the 7th kind of possible embodiment, the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
Second aspect, the embodiments of the invention provide a kind of communication equipment, the communication equipment includes：Transceiver；
Processor；
Memory；
Application program of the physical store in the memory, the application program includes can be used for making the processor and the system perform the instruction of procedure below：
Processor starts to perform the channel of the default frequency spectrum resource channel idle assessment CCA, during the channel idle evaluation window of the system subframe N in system subframe N channel idle evaluation window starting point Between length be T second, the communication equipment CCA count values N' in system subframe Ν, N' are maximum times of the communication equipment in the execution CCA in system subframe Ν；
When the processor is occupied in the channel that the system subframe Ν number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the processor judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
When the processor system subframe Ν do CCA number reach the communication equipment present sub-frame channel idle assess count value, then, judge the channel idle of the default frequency spectrum resource, and transmit the data for needing to transmit in the channel of the default frequency spectrum resource by the transceiver；
The default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
With reference to the third aspect, in the first possible embodiment, the processor is done in system subframe Ν
CCA number of times X is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment, and Ν '-χ are performed to the CCA count values of CCA subframe next time as the equipment.
With reference to the third aspect, in second of possible embodiment, the processor is done in system subframe Ν
CCA number reaches assesses count value in the communication equipment in the channel idle of present sub-frame, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipmentQThe whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
With reference to the first possible embodiment of the third aspect or the third aspect, in the third possible embodiment, the processor is assessed to the default frequency spectrum money when the communication equipment is not up in the system subframe N number of times for being CCA in the communication equipment before the channel idle of present sub-frame assesses count value The channel in source is occupied, if since communication equipment assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Shellfish ' J, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for the subframe M channel idle evaluation window starting point；
When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for subframe M+1 channel idle evaluation window starting point.
With reference to the third aspect or second of possible embodiment of the third aspect, in the 4th kind of possible embodiment, if since the transceiver the channel of the default frequency spectrum resource sends signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J
If since the transceiver the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for the subframe M channel idle evaluation window starting point；
If since the transceiver the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for the channel idle evaluation window of the subframe M+1 starting point.
With reference to the third aspect, or second of the third aspect or the 4th kind of possible embodiment, in the 5th kind of possible embodiment, the filling signal that the transceiver is sent before scheduling data are sent, the random signal that the filling signal sends for occupancy shared channel.
With reference to the 5th kind of possible embodiment of the third aspect, in the 6th kind of possible embodiment, the transceiver is notified to the recipient of signal, the time span for notifying to carry signal transmitted in last subframe for the channel transmission signal that the communication equipment takes default frequency spectrum resource, or the communication Hold facility preset frequency spectrum resource channel send signal last subframe in signal transmitted whether effective information.
With reference to the third aspect, in the 7th kind of possible embodiment, the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
Pass through method provided in an embodiment of the present invention, when listem-before-talk mechanism according to the equipment based on frame requires to take frequency spectrum resource default with release, accessed in the range of set time in the subframe of system according to multiple spot/avoidance mechanism determines that equipment does CCA time, so as to ensure that the chance of each hold facility channel is tried one's best impartial and reduces the problem of busy channel conflicts.Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of CCA windows in a kind of default frequency spectrum resource acquisition methods of the embodiment of the present invention；Fig. 2 is a kind of a kind of state reference map of default frequency spectrum resource acquisition methods in the embodiment of the present invention；Fig. 3 is a kind of state reference map of communication equipment transmission data in the embodiment of the present invention；
Fig. 4 is a kind of a kind of state reference map of default frequency spectrum resource acquisition methods in the embodiment of the present invention；Fig. 5 is a kind of a kind of state reference map of default frequency spectrum resource acquisition methods in the embodiment of the present invention；Fig. 6 is a kind of a kind of state reference map of default frequency spectrum resource acquisition methods in the embodiment of the present invention；Fig. 7 is a kind of a kind of state reference map of default frequency spectrum resource acquisition methods in the embodiment of the present invention；Fig. 8 is a kind of structure chart of communication equipment in the embodiment of the present invention；
Fig. 9 is the structure chart embodiments of another communication equipment in the embodiment of the present invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail. A kind of default frequency spectrum resource detection and occupancy method are described in the embodiment of the present invention, it is characterised in that methods described includes：
Channel idle evaluation window starting point of the communication equipment in system subframe N, start to perform the channel of the default frequency spectrum resource channel idle assessment CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value Ν ', N' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe Ν.
When the communication equipment is occupied not up in the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value in the number of times that system subframe Ν is CCA, then the communication equipment judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
Count value is assessed in the channel idle of present sub-frame in the communication equipment when the communication equipment does CCA number and reached in system subframe Ν, then, judges that the shared channel is idle, and transmission needs the data transmitted in the shared channel.
Specifically, the channel idle of default frequency spectrum resource of the communication equipment in subframe Ν assesses gate time N'=TeeANo more than Τ, wherein TeeAThe time that a channel idle is assessed is done for the communication equipment.The communication equipment performs CCA count values of the number of times X less than or equal to the communication equipment subframe N of the CCA；
In embodiments of the present invention, the whether occupied method of channel for detecting default frequency spectrum resource is not limited, can is by energy measuring or other method.
Further, when the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of the default frequency spectrum resource of the communication equipment assesses gate time is occupied, and assess number of times X of the communication equipment in system subframe N channel idle evaluation window is less than CCA count value N' of the communication equipment in subframe N, and the CCA count values in the subframe that CCA is performed next time are set to N'-X by the communication equipment.
In one embodiment, if the communication equipment is assessing the letter to the default frequency spectrum resource After road is taken by other communication equipments, if the communication equipment assesses the occupied beginning of channel to the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Then, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window.
In one embodiment, the communication equipment is judging the channel idle of the default frequency spectrum resource, and after the completion of the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the communication equipment performs the communication equipment channel idle assessed value during CCA next time, when being set to first CCA, the time counting initial value N for whole communication equipments that the channel of the default frequency spectrum resource of progress is striven unexpectedly in system0 , N0 *TCCA≤T。
The communication equipment is transmitted in the channel of the default frequency spectrum resource after the completion of the data for needing to transmit, if since the communication equipment the channel of the default frequency spectrum resource sends signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Then, since the user equipment the channel of the default frequency spectrum resource sends signal, during the time that the period used in the user equipment has undergone the anchor-frame long-time of the user equipment does not overlap with the channel idle evaluation window of the subframe M, the user equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
Since the communication equipment the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the communication equipment performs the starting point of CCA next time in subframe
The starting point of M+1 channel idle evaluation window.
As shown in figure 1, the machine that communication equipment is accessed/avoided according to multiple spot in last T seconds of system subframe Manufacture channel idle and assess CCA, the τ seconds time range is referred to as " channel idle evaluation window ".As shown in figure 1, so that " channel idle evaluation window " length τ seconds is 2 OFDM Symbol length as an example explanation.
Each communication equipment holding time in the subframe for be CCA counts value parameter N', wherein * rC C A≤ T, TCCAFor the respective CCA of each communication equipment time span.Each communication equipmentTCcA can be the same or different, equipment X'sTccAIt is designated asTx.cCA, wherein≥ 20^.When being CCA for the first time, each communication equipment is set in the time counting value of the subframe where CCA Equipment starts to be CCA in Subframe# N " channel idle evaluation window " starting point, when the channel for detecting default frequency spectrum resource is occupied, or, CCA terminates when the number of times for performing CCA reaches CCA count value of the equipment in the subframe.
The time for performing the CCA is ^ and X product, and X is the number of times that communication equipment performs CCA in channel idle evaluation window；
The result assessed according to channel idle has following two situations：
In the first scenario, if communication equipment be in Subframe#N CCA number of times be not reaching to CCA count value of the communication equipment in the subframe detect default frequency spectrum resource channel it is occupied, then the communication equipment stops CCA, and the count value that the time counting value being next time in CCA Subframe is set in the Subframe# N-equipment does CCA number of times in Subframe# N.
The time end point and the length of " anchor-frame is for a long time " of communication equipment that the time that communication equipment is CCA next time is CCA by this are determined.From communication equipment, the time span for the time starting point that this time end point for being CCA is CCA next times to the communication equipment is referred to as the communication equipment current " standby time ".The length of described " standby time " always greater than or equal to the communication equipment " anchor-frame is for a long time " length.Assuming that from communication equipment in Subframe#n.It is after the time for occupied " anchor-frame is for a long time " for starting, undergoing the communication equipment of channel that default frequency spectrum resource is detected when being CCA
Subframe# ηThe time of ι subframes. As shown in Fig. 2 the length of " standby time " of communication equipment has following possibility：Possibility one：From communication equipment in Subframe#n.Detected when being CCA default frequency spectrum resource channel it is occupied start, undergo " anchor-frame for a long time " of the communication equipment time range and
Subframe# n" the channel idle evaluation window " of i subframes does CCA subframe in Subframe# next time without the time overlapped, then communication equipmentηIn " the channel idle evaluation window " of ι subframes.The length of " standby time " be communication equipment in the channel occupied time that Subframe#l detects default frequency spectrum resource, to Subframe#n" channel idle evaluation window " starting point of i subframes terminates；
Possibility two：From communication equipment in Subframe#n.The channel occupied time range and Subframe# for starting, undergoing " anchor-frame is for a long time " of the communication equipment of default frequency spectrum resource is detected when being CCAn" the channel idle evaluation window " of i subframes has the time of coincidence, then communication equipment does CCA subframe in Subframe# next timeni + 1In " the channel idle evaluation window " of subframe.The length of " standby time " is communication equipment in Subframe#n.The channel occupied time of default frequency spectrum resource is detected, to Subframe#ni + 1" channel idle evaluation window " starting point of subframe terminates.
As shown in Figure 3, if communication equipment does CCA number of times in Subframe# N and reaches CCA count value of the communication equipment in the subframe in the latter case, the channel idle of default frequency spectrum resource is detected, then the communication equipment starts to send data on the channel of the default frequency spectrum resource of detection.Communication equipment sends certain filling signal before scheduling data are sent.By allow communication equipment according to system data dispatch when form in units of subframe scheduling, and the channel that frequency spectrum resource is preset before communication device schedules data transfer will not be taken by other communication equipments.As shown in figure 3,
Simultaneously, when reaching CCA count value of the communication equipment in the subframe due to the number of times that communication equipment is CCA in Subframe# N, the channel idle of default frequency spectrum resource is detected, then the communication equipment starts to send data on the channel of the default frequency spectrum resource of detection.Listem-before-talk mechanism according to the communication equipment (Frame based equipment) based on frame requires occupancy and the requirement of release channel resource, and the time that the communication equipment takes the channel of default frequency spectrum resource is " during channel occupancy of the communication equipment Between ".According to CCA count value of the communication equipment in Subframe# N and the equipmentΤ∞ΑThe sum of products communication equipment " Channel holding time ", it may be determined that the communication equipment this time sends the time of useful signal in the channel for taking default frequency spectrum resource.So, in the subframe where the communication equipment is sent at the time of signal terminates, the communication equipment takes the channel of default frequency spectrum resource, and to send the time span of signal be probably a kind of uncertain value, therefore the communication equipment needs to notify to take the whether effective information of signal of the channel transmission of default frequency spectrum resource in the subframe in the time span or the communication equipment that the channel that the subframe takes default frequency spectrum resource sends signal to the recipient for sending signal.
The communication equipment does CCA time and since the communication equipment the channel of the default frequency spectrum resource sends signal next time, relevant at the time of after the time of " anchor-frame is for a long time " that undergoes the communication equipment.Assuming that from communication equipment in Subframe#n.The channel transmission signal for taking default frequency spectrum resource starts, and is Subframe# after the time of " anchor-frame is for a long time " that undergoes the communication equipmentnThe time of i subframes, there is following possibility：
Possibility one：From communication equipment in Subframe#n.The channel transmission signal for taking default frequency spectrum resource starts, and undergoes the time range and Subframe# of " anchor-frame is for a long time " of the communication equipmentn" the channel idle evaluation window " of i subframes does CCA subframe in Subframe# next time without the time overlapped, then communication equipmentnIn " the channel idle evaluation window " of i subframes.
Possibility two：From communication equipment in Subframe#n.The channel transmission signal for taking default frequency spectrum resource starts, and undergoes the time range and Subframe# of " anchor-frame is for a long time " of the communication equipmentn" the channel idle evaluation window " of i subframes has the time of coincidence, then communication equipment does CCA subframe in Subframe# next timeni + 1In " the channel idle evaluation window " of subframe.
Method provided in an embodiment of the present invention is illustrated with more specifically embodiment below, it is assumed that N.=1G, the T of multiple communication equipmentsCCAIt is identical." channel idle evaluation window " interior communication equipment A, communication equipment ^ communication equipments C in Subframe#l are CCA, and communication equipment A, B, C are in Subframe#l CCA count valuesN'"、 Ν'Β·'、 Ν' ' it is respectively 5,4,9 As shown in figure 5, communication equipment A is when Subframe#l does CCA 4 units of time countdown, the channel for detecting default frequency spectrum resource is occupied, then stops CCA, and the time counting value that next time is done into CCA is set to 5-4=1;
Communication equipment B detects the channel idle of default frequency spectrum resource when Subframe#l does CCA 4 units of time countdown, starts to send data on the channel of detection, and the time counting value for being CCA next time is set into 10;
Communication equipment C is when Subframe#l does CCA 4 units of time countdown, and the channel for detecting default frequency spectrum resource is occupied, then stops CCA, and the time counting value that next time is done into CCA is set to 9-4=5;
To communication equipment A, next time # branch CCA time have two kinds of possibilities：
Possibility one：Since the channel that communication equipment A detects default frequency spectrum resource when Subframe#l is CCA is occupied, after the time of " anchor-frame is for a long time " that undergoes the communication equipment in Subframe#n time range, and in the time of the scope of time and " the channel idle evaluation window " of Subframe#n subframes without coincidence for undergoing " anchor-frame for a long time " of the communication equipment, then communication equipment A does CCA subframe since the starting point of Subframe#n " channel idle evaluation window " next time.The length of " standby time " is the channel occupied time that communication equipment A detects default frequency language resource in Subframe#l, and " channel idle evaluation window " starting point to Subframe#n subframes terminates；
Possibility two：Since the channel that communication equipment A detects default frequency spectrum resource when Subframe#l is CCA is occupied, after the time of " anchor-frame is for a long time " that undergoes the communication equipment in Subframe#n time range, and there is the time of coincidence in the scope of time and " the channel idle evaluation window " of Subframe#n subframes of " anchor-frame is for a long time " that undergoes the communication equipment, then communication equipment A does CCA subframe since the starting point of " the channel idle evaluation window " of Subframe#n+1 subframes next time.The length of " standby time " be communication equipment A in the channel occupied time that Subframe#l detects default frequency spectrum resource, to Subframe#n+1 subframes " channel idle assessment window " starting point terminates mouth.
For communication equipment B:
Communication equipment B detects the channel idle of default frequency spectrum resource when the Subframe#l number of times for being CCA reaches the communication equipment in the subframe, then the communication equipment starts to send data in the shared channel of detection.Before Subframe#2, communication equipment B may need to send certain filling signal before sending, by allow the communication equipment according to system data dispatch when form in units of subframe scheduling, before Subframe#2 is to data dispatch, the channel of the default frequency spectrum resource will not be taken by other communication equipments.May be in Subframe#x subframes since time points of the communication equipment B after " Channel holding time " of the communication equipment is undergone Subframe#l sends signal, then the start time that communication equipment B is sent in the time that the Subframe#x channels that can take the default frequency spectrum resource send channel according to this signal is related to its " Channel holding time ".Communication equipment B needs notification signal receiving communication device in the time that the Subframe#x channels for taking default frequency spectrum resource send channel.Or communication equipment B notification signals receiving communication device takes the whether effective information of signal that shared channel is sent in the Subframe#x.
As shown in fig. 7, there are two kinds of possibilities the time that communication equipment B is CCA next time：Possibility one：Since communication equipment B the Subframe#l channels for taking default frequency spectrum resource send signal, after the time of " anchor-frame is for a long time " that undergoes the communication equipment in Subframe#n time range, and in the time of the scope of time and " the channel idle evaluation window " of Subframe#n subframes without coincidence for undergoing " anchor-frame for a long time " of the communication equipment, then communication equipment B does CCA subframe since the starting point of Subframe#n " channel idle evaluation window " next time.
Possibility two：Since communication equipment B the Subframe#l channels for taking default frequency spectrum resource send signal, after the time of " anchor-frame is for a long time " that undergoes the communication equipment in Subframe#n time range, and there is the time of coincidence in the scope of time and " the channel idle evaluation window " of Subframe#n subframes of " anchor-frame is for a long time " that undergoes the communication equipment, then communication equipment B does CCA subframe since the starting point of " the channel idle evaluation window " of Subframe#n+1 subframes next time. By above-described embodiment, each communication equipment accessed according to multiple spot in " the channel idle evaluation window " of same subframe/and avoidance mechanism determines that equipment does CCA time, and equipment can be caused according to the equipment based on frame（Frame based equipment) listem-before-talk mechanism require take with release unlicensed spectrum channel resource when, between devices in the case of time synchronized, it can ensure that the chance of each hold facility channel is tried one's best equalization, and reduce the problem of busy channel conflicts.
Accordingly, as shown in figure 8, the embodiments of the invention provide a kind of communication equipment, the communication equipment includes：
Channel idle assessment unit 801, for the channel idle evaluation window starting point in system subframe N, start to perform the channel of the default frequency spectrum resource channel idle assessment CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N', N' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe N.；The channel idle assessment unit is during the CCA is performed, when the communication equipment is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the communication equipment judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
Count value is assessed in the channel idle of present sub-frame in the communication equipment when the communication equipment does CCA number and reached in system subframe N, then, the channel idle assessment unit judges to preset the channel idle of frequency spectrum resource described in 801；
Transmission unit 802, for the data that transmission needs are transmitted in the shared channel.
Wherein, the default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
Optionally, the channel idle estimation unit 801 is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment when the communication equipment in the system subframe N number of times X for being CCA, and CCA is performed next time using N'-x as the equipment Subframe CCA count values.
Optionally, the channel idle estimation unit 801 reaches in CCA number of system subframe f assesses count value in the communication equipment in the channel idle of present sub-frame, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, by NQPerform the CCA count values of CCA subframe next time as the equipment. NQThe whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
Optionally, the channel status estimation unit 801 is occupied not up in the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value in system subframe f CCA number of times, if since channel status estimation unit assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Then,
During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the channel status estimation unit performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the channel status estimation unit performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window.
It is preferred that, if since the transmission unit 802 the channel of the default frequency spectrum resource sends signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J, if since the transmission unit the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the channel estimating unit 801 is performing starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
If since the transmission unit the channel of the default frequency spectrum resource sends signal, when the communication equipment has undergone the period used in the anchor-frame long-time of the communication equipment and the letter of the subframe M When road free time evaluation window has the time of coincidence, the channel estimating unit 801 is performing starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M+1.
It is preferred that, the communication equipment also includes fills unit, for the filling signal sent before scheduling data are sent, the random signal that the filling signal sends for occupancy shared channel.
Notification unit, for recipient's notice to signal, it is described notify to carry the communication equipment and take the channel of default frequency spectrum resource send the time span of signal transmitted in last subframe of signal, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
In the present embodiment, the channel idle evaluation window be last T second of system subframe or it is initial T seconds ' time.
By above-described embodiment, each communication equipment accessed according to multiple spot in " channel idle evaluation window "/and avoidance mechanism determines that LTE equipment does CCA time, and LTE equipment can be caused according to the equipment based on frame（Frame based equipment) listem-before-talk mechanism require take with release unlicensed spectrum channel resource when, between multiple LTE equipment in the case of time synchronized, it can ensure that the chance of each hold facility channel is tried one's best equalization, and reduce the problem of busy channel conflicts.
As shown in figure 9, the embodiment of the present invention provides a kind of communication equipment, the present embodiment includes transceiver 91, processor 92 and memory 93.System bus 94 is used to connect network interface 91, processor 92 and memory 93.
Transceiver 91 is used to be communicated with base station etc..
Memory 93 can have software module and device driver in permanent memory, such as hard disk drive and flash memory, memory 93.Software module is able to carry out the various functions module of the above method of the present invention；Device driver can be network and interface drive program.
On startup, these component softwares are loaded into memory 93, are then accessed and are performed by processor 92 and such as give an order：
Processor starts to the default frequency spectrum in system subframe N channel idle evaluation window starting point The channel of resource performs channel idle and assesses CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N', N' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe N.
When the processor is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the processor judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
When the processor system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, then, judge the channel idle of the default frequency spectrum resource, and transmit the data for needing to transmit in the channel of the default frequency spectrum resource by the transceiver；
The default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
It is preferred that, the processor 92 is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment in the system subframe N number of times X for being CCA, and N'-x is performed to the CCA count values of CCA subframe next time as the equipment.
It is preferred that, the processor 92 system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe will be performed next time as the equipment, be the CCA count values that whole communication equipments that the interior channel for carrying out default frequency spectrum resource of system is striven unexpectedly do CCA subframe first.
It is preferred that, the processor 92 is judging that the shared channel is idle, and after the completion of transmitting in the shared channel data for needing to transmit by the transceiver, the user equipment is performed to channel idle assessed value during CCA next time, when being set to first CCA, the time counting initial value No for whole user equipmenies that shared channel is striven unexpectedly is carried out in LTE system. It is preferred that, the processor 92 system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipment.The whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
It is preferred that, the processor 92 when the communication equipment system subframe N be CCA number of times be not up to the communication equipment present sub-frame channel idle assess count value before assess to the default frequency spectrum resource channel it is occupied, if since communication equipment assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Then,
During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the processor 92 performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the processor 92 performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window.
It is preferred that, the transceiver 91 transmitted in the shared channel need transmit data after the completion of if since the transceiver 91 the default frequency spectrum resource channel send signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J
If since the transceiver 91 the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the processor 92 performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
If since the transceiver 91 the channel of the default frequency spectrum resource sends signal, when the communication equipment has undergone the period used in the anchor-frame long-time of the communication equipment and the letter of the subframe M When road free time evaluation window has the time of coincidence, the processor 92 performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M+1.
It is preferred that, when the processor judgement shared channel free time, and the data for needing to transmit are transmitted in the shared channel by the transceiver, further comprised：
The filling signal that the transceiver is sent before scheduling data are sent, the random signal that the filling signal sends for occupancy shared channel.
It is preferred that, the transceiver 91 is notified to the recipient of signal, it is described notify to carry the communication equipment and take the channel of default frequency spectrum resource send the time span of signal transmitted in last subframe of signal, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
In the present embodiment, the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
By above-described embodiment, each communication equipment accessed according to multiple spot in " channel idle evaluation window "/and avoidance mechanism determines that LTE equipment does CCA time, and LTE equipment can be caused according to the equipment based on frame（Frame based equipment) listem-before-talk mechanism require take with release unlicensed spectrum channel resource when, between multiple LTE equipment in the case of time synchronized, it can ensure that the chance of each hold facility channel is tried one's best equalization, and reduce the problem of busy channel conflicts.
Professional should further appreciate that, the unit and algorithm steps of each example described with reference to the embodiments described herein, it can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate the interchangeability of hardware and software, the composition and step of each example are generally described according to function in the above description.These functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can realize described function to each specific application using distinct methods, but this realization is it is not considered that beyond the scope of this invention.
The step of method or algorithm for being described with reference to the embodiments described herein, can use hardware, processing The software module that device is performed, or the two combination are implemented.Software module can be placed in random access memory
(RAM), internal memory, read-only storage（ROM), in any other form of storage medium known in electrically programmable R0M, electrically erasable R0M, register, hard disk, moveable magnetic disc, CD-R0M or technical field.
Above-described embodiment; the purpose of the present invention, technical scheme and beneficial effect are further described; it should be understood that; it the foregoing is only the embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in the scope of the protection.

Claims (24)

  1. Claims
    1st, a kind of default frequency spectrum resource detection is with taking method, it is characterised in that methods described includes：Channel idle evaluation window starting point of the communication equipment in system subframe N, start to perform the channel of the default frequency spectrum resource channel idle assessment CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N', N' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe N；
    When the communication equipment is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the communication equipment judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
    When the communication equipment system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, then, judge the channel idle of the default frequency spectrum resource, and transmission needs the data transmitted in the channel of the default frequency spectrum resource；
    The default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
    2nd, the method as described in claim 1, it is characterized in that, when the communication equipment is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment in the system subframe N number of times X for being CCA, N'-x is performed to the CCA count values of CCA subframe next time as the equipment.
    3rd, the method as described in claim 1, it is characterized in that, the communication equipment system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipmentQThe whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do CCA subframe first CCA count values.
    4th, method as claimed in claim 1 or 2, it is characterized in that, when the communication equipment is occupied not up in the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value in the number of times that system subframe N is CCA, if since communication equipment assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Shellfish ' J,
    During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
    When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window.
    5th, the method as described in claim requirement 1 or 3, if characterized in that, since the communication equipment the default frequency spectrum resource channel send signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J
    If since the communication equipment the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
    If since the communication equipment the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the communication equipment performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M+1.
    6th, any one method as described in claim 1,3,5, it is characterised in that when the channel idle for judging the default frequency spectrum resource, and transmission needs the data transmitted in the shared channel, enters one Step includes：
    The communication equipment sends filling signal, the random signal that the filling signal sends for occupancy shared channel before scheduling data are sent.
    7th, method as claimed in claim 6, it is characterised in that also include：
    The communication equipment is notified to the recipient of signal, it is described notify to carry the communication equipment and take the channel of default frequency spectrum resource send the time span of signal transmitted in last subframe of signal, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
    8th, the method as described in claim 1, it is characterised in that the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
    9th, a kind of communication equipment, it is characterised in that including：
    Channel idle assessment unit, for the channel idle evaluation window starting point in system subframe N, start to perform the channel of the default frequency spectrum resource channel idle assessment CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N ', N ' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe N；
    The channel idle assessment unit is during the CCA is performed, when the communication equipment is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the communication equipment judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
    Count value is assessed in the channel idle of present sub-frame in the communication equipment when the communication equipment does CCA number and reached in system subframe N, then, the channel idle assessment unit judges the channel idle of the default frequency spectrum resource；
    Transmission unit, for the data that transmission needs are transmitted in the shared channel；
    The default frequency spectrum resource has following feature：Need to intercept the service condition of the channel of the default frequency spectrum resource before the channel for taking the default frequency spectrum resource and often take once the default frequency spectrum resource Channel holding time it is limited.
    10th, communication equipment as claimed in claim 9, it is characterized in that, the channel idle estimation unit is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment when the communication equipment in the system subframe N number of times X for being CCA, and N'-x is performed to the CCA count values of CCA subframe next time as the equipment.
    11st, user equipment as claimed in claim 10, it is characterized in that, the channel idle estimation unit system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipment.The whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
    12nd, communication equipment as claimed in claim 9, it is characterized in that, when the channel status estimation unit is occupied not up in the channel of communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value in the number of times that CCA is in system subframe N, if since channel status estimation unit assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Shellfish ' J,
    During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the channel status estimation unit performs starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
    When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the channel status estimation unit performs starting point of the starting point of CCA next time for subframe M+1 channel idle evaluation window..
    13rd, communication equipment as claimed in claim 12, if characterized in that, since the transmission unit the default frequency spectrum resource channel send signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J If since the transmission unit the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the channel estimating unit is performing starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M；
    If since the transmission unit the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the channel estimating unit is performing starting point of the starting point of CCA next time for the channel idle evaluation window of the subframe M+1.
    14th, communication equipment as claimed in claim 9, it is characterised in that also include：
    Fills unit, for the filling signal sent before scheduling data are sent, the random signal that the filling signal sends for occupancy shared channel.
    15th, communication equipment as claimed in claim 15, it is characterised in that also include：
    Notification unit, for recipient's notice to signal, it is described notify to carry the communication equipment and take the channel of default frequency spectrum resource send the time span of signal transmitted in last subframe of signal, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
    16th, communication equipment as claimed in claim 9, it is characterised in that the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
    17th, a kind of communication equipment, it is characterised in that the communication equipment includes：
    Transceiver；
    Processor；
    Memory；
    Application program of the physical store in the memory, the application program includes can be used for making the processor and the system perform the instruction of procedure below：
    Processor starts to the default frequency spectrum in system subframe N channel idle evaluation window starting point The channel of resource performs channel idle and assesses CCA, the channel idle evaluation window time span of the system subframe N is T seconds, CCA count value N', N' of the communication equipment in system subframe N are that the communication equipment is performing CCA maximum times in system subframe N；
    When the processor is occupied in the channel that the system subframe N number of times for being CCA is not up to communication equipment assessment to default frequency spectrum resource before the channel idle of present sub-frame assesses count value, then the processor judges that the channel of the default frequency spectrum resource is occupied, and terminates the assessment of the channel clear to presetting frequency spectrum resource；
    When the processor system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, then, judge the channel idle of the default frequency spectrum resource, and transmit the data for needing to transmit in the channel of the default frequency spectrum resource by the transceiver；
    The default frequency spectrum resource has following feature：Need the holding time of channel intercepted the service condition of the channel of the default frequency spectrum resource and often take once the default frequency spectrum resource limited before the channel for taking the default frequency spectrum resource.
    18th, communication equipment as claimed in claim 17, it is characterized in that, the processor is not up to when assessment is occupied to the channel of the default frequency spectrum resource before the channel idle of present sub-frame assesses count value for the communication equipment in the system subframe N number of times X for being CCA, and N'-X is performed to the CCA count values of CCA subframe next time as the equipment.
    19th, communication equipment as claimed in claim 18, it is characterized in that, the processor system subframe N do CCA number reach the communication equipment present sub-frame channel idle assess count value, judge after the channel idle of the default frequency spectrum resource and the data that transmission needs are transmitted in the channel of the default frequency spectrum resource, the CCA count values of CCA subframe, N will be performed next time as the equipment0The whole communication equipments striven unexpectedly to carry out the channel of default frequency spectrum resource in system do the CCA count values of CCA subframe first.
    20th, communication equipment as claimed in claim 17, it is characterised in that the processor when the communication equipment system subframe N be CCA number of times be not up to the communication equipment present sub-frame letter The channel of assessment to the default frequency spectrum resource is occupied before the road free time assesses count value, if since communication equipment assessment is occupied to the channel of the default frequency spectrum resource, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M；Shellfish
    During the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for the subframe M channel idle evaluation window starting point；
    When the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for subframe M+1 channel idle evaluation window starting point.
    21st, communication equipment as claimed in claim 20, if characterized in that, since the transceiver the default frequency spectrum resource channel send signal, to the prolonged end point of anchor-frame for having undergone the communication equipment in subframe M, shellfish ' J
    If since the transceiver the channel of the default frequency spectrum resource sends signal, during the time that the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment does not overlap with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for the subframe M channel idle evaluation window starting point；
    If since the transceiver the channel of the default frequency spectrum resource sends signal, when the period used in the communication equipment has undergone the anchor-frame long-time of the communication equipment having the time overlapped with the channel idle evaluation window of the subframe M, the computing device next time CCA starting point for the channel idle evaluation window of the subframe M+1 starting point.
    22nd, communication equipment as claimed in claim 17, it is characterised in that the filling signal that the transceiver is sent before scheduling data are sent, the random signal that the filling signal sends for occupancy shared channel.
    23rd, communication equipment as claimed in claim 22, it is characterised in that the transceiver notifies that the channel for notifying to carry the default frequency spectrum resource of communication equipment occupancy sends signal to the recipient of signal The time span of signal transmitted in last subframe, or the communication equipment take default frequency spectrum resource channel send signal transmitted in last subframe of signal whether effective information.
    24th, communication equipment as claimed in claim 17, it is characterised in that the channel idle evaluation window is the time of last T seconds or initially T seconds of a system subframe.
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